Class: Heathrow::Application

Inherits:
Object
  • Object
show all
Includes:
UI::ThreadedView, Rcurses, Rcurses::Cursor, Rcurses::Input
Defined in:
lib/heathrow/ui/application.rb

Constant Summary collapse

COLOR_THEMES = 
{
  'Default' => { unread: 226, read: 249, accent: 10, thread: 255, dm: 201, tag: 14, star: 226,
                 quote1: 114, quote2: 180, quote3: 139, quote4: 109, sig: 242,
                 top_bg: 235, bottom_bg: 235, cmd_bg: 17,
                 source_email: 39, source_maildir: 39, source_whatsapp: 40,
                 source_discord: 99, source_reddit: 202, source_rss: 226,
                 source_telegram: 51, source_slack: 35, source_web: 208,
                 source_messenger: 33, source_instagram: 205, source_weechat: 75,
                 source_default: 15 },
  'Mutt'    => { unread: 226, read: 249, accent: 14, thread: 252, dm: 213, tag: 81,
                 quote1: 114, quote2: 180, quote3: 139, quote4: 109, sig: 243 },
  'Ocean'   => { unread: 51,  read: 249, accent: 45, thread: 45,  dm: 171, tag: 87,
                 quote1: 75, quote2: 117, quote3: 153, quote4: 189, sig: 242 },
  'Forest'  => { unread: 77,  read: 249, accent: 10, thread: 78,  dm: 176, tag: 48,
                 quote1: 114, quote2: 150, quote3: 186, quote4: 222, sig: 242 },
  'Amber'   => { unread: 220, read: 249, accent: 226, thread: 214, dm: 209, tag: 214,
                 quote1: 222, quote2: 186, quote3: 180, quote4: 174, sig: 242 },
}
CHAT_SOURCE_TYPES = 
%w[weechat messenger instagram whatsapp discord telegram slack workspace].freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from UI::ThreadedView

#apply_thread_mode_key, #create_section_header, #current_message_for_navigation, #cycle_view_mode, #filtered_messages_size, #finalize_line, #format_channel_header, #format_channel_message, #format_dm_header, #format_dm_message, #format_section_header, #format_thread_header, #format_thread_message, #format_thread_reply, #format_time, #get_source_icon, #initialize_threading, #move_section, #organize_current_messages, #render_channel_messages, #render_message_list_threaded, #render_thread_messages, #reset_threading, #restore_view_thread_mode, #save_section_order, #save_view_thread_mode, #section_date_range, #thread_mode_key, #thread_mode_label, #toggle_collapse, #toggle_folder_view, #toggle_thread_view

Constructor Details

#initialize ⇒ Application 



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# File 'lib/heathrow/ui/application.rb', line 58

def initialize
  # Ensure LS_COLORS is loaded (may be missing if not launched from rsh)
  if !ENV['LS_COLORS'] || ENV['LS_COLORS'].empty?
    lscolors_file = File.expand_path('~/.local/share/lscolors.sh')
    if File.exist?(lscolors_file)
      content = File.read(lscolors_file)
      ENV['LS_COLORS'] = $1 if content =~ /LS_COLORS='([^']+)'/
    end
  end

  # Initialize core components FIRST
  @db = Database.new
  @config = Config.new
  @source_manager = SourceManager.new(@db)
  @running = false
  @current_view = 'A' # Start with All messages
  initialize_threading  # Initialize threading support
  @view_names = {
    'A' => 'All Messages',
    'N' => 'New Messages',
    's' => 'Sources',
    'S' => 'Starred'
  }
  
  # UI state - RC settings override YAML config, with defaults
  @width = @config.get('ui.width', @config.rc('pane_width', 3))
  @border = @config.rc('border_style', 1)
  @sort_order = @config.rc('sort_order', 'latest')
  @sort_inverted = false
  @feedback_message = nil
  @feedback_expires_at = nil
  @date_format = @config.rc('date_format', '%b %e')
  @confirm_purge = @config.rc('confirm_purge', false) == true
  @color_theme = @config.rc('color_theme', 'Default')
  @default_view = @config.get('ui.default_view', 'A')
  @editor_args = @config.get('ui.editor_args', "-c 'set nospell' -c 'startinsert!'")
  @default_email = @config.get('default_email', @config.rc('default_email', ''))
  @smtp_command = @config.get('smtp_command', @config.rc('smtp_command', ''))

  # Message list state
  @messages = []
  @filtered_messages = []
  @index = 0
  @min_index = 0
  @source_colors = {}  # Cache for source colors
  @max_index = 0

  # Browsed message tracking for session-based read status
  @browsed_message_ids = Set.new  # Messages viewed this session
  @tagged_messages = Set.new  # Tagged messages for batch operations
  
  # View definitions
  @views = {}
  load_views
  
  # Colors (from theme, with defaults)
  @topcolor = theme[:top_bg] || 235
  @bottomcolor = theme[:bottom_bg] || 235
  @cmdcolor = theme[:cmd_bg] || 17
  
  # Load source colors
  load_source_colors

  # Load address book
  require_relative '../address_book'
  @address_book = AddressBook.new
end

Instance Attribute Details

#config ⇒ Object (readonly)

Returns the value of attribute config.



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# File 'lib/heathrow/ui/application.rb', line 56

def config
  @config
end

#db ⇒ Object (readonly)

Returns the value of attribute db.



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# File 'lib/heathrow/ui/application.rb', line 56

def db
  @db
end

#panes ⇒ Object (readonly)

Returns the value of attribute panes.



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# File 'lib/heathrow/ui/application.rb', line 56

def panes
  @panes
end

Instance Method Details

#add_new_source ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 918

def add_new_source
  require_relative 'source_wizard'
  wizard = SourceWizard.new(@source_manager, @panes[:bottom], @panes[:right])
  source_id = wizard.run_wizard
  
  if source_id
    # Refresh the sources view
    show_sources
  else
    # Restore sources view
    render_sources_info
  end
end

#add_sender_to_address_book ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 7307

def add_sender_to_address_book
  msg = current_message
  return set_feedback("No message selected", 196, 2) unless msg

  sender = msg['sender'].to_s.strip
  sender_name = msg['sender_name'].to_s.strip
  return set_feedback("No sender", 196, 2) if sender.empty?

  # Build full address: "Name <email>" or just "email"
  full = if sender_name.empty? || sender_name == sender
           sender
         else
           "#{sender_name} <#{sender}>"
         end

  # Suggest alias from name or email local part
  suggested = if !sender_name.empty? && sender_name != sender
                sender_name.split.first.downcase
              else
                sender.split('@').first.downcase
              end

  @panes[:bottom].text = " Add: #{full}".fg(156)
  @panes[:bottom].refresh
  alias_name = @panes[:bottom].ask(" Alias: ", suggested)
  return set_feedback("Cancelled", 245, 1) if alias_name.nil? || alias_name.strip.empty?
  alias_name = alias_name.strip.gsub(/\s+/, '.')

  ab_path = File.expand_path('~/setup/addressbook')
  File.open(ab_path, 'a') { |f| f.puts "alias #{alias_name} #{full}" }
  @address_book = AddressBook.new(ab_path)
  set_feedback("Added: #{alias_name} → #{full}", 156, 3)
rescue => e
  set_feedback("Failed: #{e.message}", 196, 2)
end

#add_source_item ⇒ Object

Add an item (feed/channel) to the selected source



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# File 'lib/heathrow/ui/application.rb', line 951

def add_source_item
  return unless @filtered_messages[@index]
  source_id = @filtered_messages[@index]['id']
  source = @db.get_source_by_id(source_id)
  return unless source

  config = source['config']
  config = JSON.parse(config) if config.is_a?(String)
  source_type = source['plugin_type'] || source['type']

  case source_type
  when 'rss'
    url = bottom_ask("Feed URL: ", "")
    return if url.nil? || url.strip.empty?
    title = bottom_ask("Title (optional): ", "")
    return if title.nil?

    feed = { 'url' => url.strip }
    feed['title'] = title.strip unless title.strip.empty?
    config['feeds'] ||= []
    config['feeds'] << feed
    @db.execute("UPDATE sources SET config = ? WHERE id = ?", [config.to_json, source_id])
    set_feedback("Added feed: #{feed['title'] || feed['url']}", 156, 3)
  when 'web'
    url = bottom_ask("Page URL: ", "")
    return if url.nil? || url.strip.empty?
    title = bottom_ask("Title (optional): ", "")
    return if title.nil?

    page = { 'url' => url.strip }
    page['title'] = title.strip unless title.strip.empty?
    config['pages'] ||= []
    config['pages'] << page
    @db.execute("UPDATE sources SET config = ? WHERE id = ?", [config.to_json, source_id])
    set_feedback("Added page: #{page['title'] || page['url']}", 156, 3)
  end

  show_sources
end

#add_source_item_for(source) ⇒ Object

Add item to a known source (called from non-Sources views)



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# File 'lib/heathrow/ui/application.rb', line 1093

def add_source_item_for(source)
  config = source['config']
  config = JSON.parse(config) if config.is_a?(String)
  stype = source['plugin_type'] || source['type']

  case stype
  when 'rss'
    url = bottom_ask("Feed URL: ", "")
    return if url.nil? || url.strip.empty?
    title = bottom_ask("Title (optional): ", "")
    return if title.nil?

    feed = { 'url' => url.strip }
    feed['title'] = title.strip unless title.strip.empty?
    config['feeds'] ||= []
    config['feeds'] << feed
    @db.execute("UPDATE sources SET config = ? WHERE id = ?", [config.to_json, source['id']])
    set_feedback("Added feed: #{feed['title'] || feed['url']}", 156, 3)
  when 'web'
    url = bottom_ask("Page URL: ", "")
    return if url.nil? || url.strip.empty?
    title = bottom_ask("Title (optional): ", "")
    return if title.nil?

    page = { 'url' => url.strip }
    page['title'] = title.strip unless title.strip.empty?
    config['pages'] ||= []
    config['pages'] << page
    @db.execute("UPDATE sources SET config = ? WHERE id = ?", [config.to_json, source['id']])
    set_feedback("Added page: #{page['title'] || page['url']}", 156, 3)
  end
end

#address_book_menu ⇒ Object

Address book: add sender or edit file



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# File 'lib/heathrow/ui/application.rb', line 7293

def address_book_menu
  @panes[:bottom].text = " @: a=Add sender to address book, e=Edit address book".fg(245)
  @panes[:bottom].refresh
  chr = getchr
  case chr
  when 'a'
    add_sender_to_address_book
  when 'e'
    edit_address_book
  else
    set_feedback("Cancelled", 245, 1)
  end
end

#advance_index ⇒ Object

Advance index to next item (no wrap, no re-render)



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# File 'lib/heathrow/ui/application.rb', line 2303

def advance_index
  message_size = message_count
  @index = [@index + 1, message_size - 1].min if message_size > 0
end

#ai_assistant ⇒ Object

AI Assistant (I key) ==========

Interactive Claude Code integration for message-related AI tasks. Uses claude -p CLI for one-shot queries with full CLAUDE.md context.



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# File 'lib/heathrow/ui/application.rb', line 4688

def ai_assistant
  msg = current_message
  return unless msg && !msg['is_header'] && !msg['is_channel_header'] && !msg['is_thread_header']
  msg = ensure_full_message(msg)

  # Build message context
  context = ai_message_context(msg)

  # Show menu
  set_feedback("AI: d=Draft reply  f=Fix grammar  s=Summarize  t=Translate  a=Ask...", 226, 10)
  chr = getchr(10)
  if chr.nil? || chr == 'ESC' || chr == "\e"
    @feedback_expires_at = nil
    render_bottom_bar
    return
  end

  case chr
  when 'd'
    ai_draft_reply(msg, context)
  when 'f'
    ai_fix_grammar(msg, context)
  when 's'
    ai_summarize(msg, context)
  when 't'
    ai_translate(msg, context)
  when 'a'
    ai_freeform(msg, context)
  else
    @feedback_expires_at = nil
    render_bottom_bar
  end
end

#ai_call(prompt) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 4736

def ai_call(prompt)
  require 'open3'
  @panes[:bottom].text = " AI thinking... (this may take a moment)".fg(226)
  @panes[:bottom].refresh

  env = ENV.to_h.reject { |k, _| k == 'CLAUDECODE' }

  # Log prompt for debugging
  File.open('/tmp/heathrow_ai.log', 'a') do |f|
    f.puts "=== AI CALL #{Time.now} ==="
    f.puts "Prompt length: #{prompt.length}"
  end

  result = nil
  stderr_out = nil
  status = nil
  begin
    result, stderr_out, status = Open3.capture3(env, 'claude', '-p',
      '--max-turns', '1', stdin_data: prompt)
  rescue => e
    File.open('/tmp/heathrow_ai.log', 'a') { |f| f.puts "Exception: #{e.message}" }
    set_feedback("AI error: #{e.message}", 196, 3)
    return nil
  end

  File.open('/tmp/heathrow_ai.log', 'a') do |f|
    f.puts "Exit status: #{status.exitstatus}"
    f.puts "Result length: #{result&.length}"
    f.puts "Stderr: #{stderr_out}" if stderr_out && !stderr_out.empty?
    f.puts "Result preview: #{result&.slice(0, 200)}"
  end

  render_bottom_bar

  unless status.success?
    set_feedback("AI error (exit #{status.exitstatus})", 196, 3)
    return nil
  end

  if result.nil? || result.strip.empty?
    set_feedback("AI returned empty response", 226, 3)
    return nil
  end

  result
end

#ai_draft_reply(msg, context) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 4794

def ai_draft_reply(msg, context)
  identity = current_identity
  from_info = identity ? "I am: #{identity[:from]}" : ""
  prompt = "    You are drafting an email reply. Write only the reply body text, no headers.\n    Match the tone and language of the original message.\n    Keep it concise and natural. \#{from_info}\n\n    Original message:\n    \#{context}\n\n    Draft a reply:\n  PROMPT\n\n  response = ai_call(prompt)\n  return unless response\n\n  ai_show_response(\"DRAFT REPLY (press 'r' to open in editor)\", response)\n\n  # Wait for user action\n  @panes[:bottom].text = \" r=Open in editor with draft | y=Copy to clipboard | ESC=Dismiss\".fg(245)\n  @panes[:bottom].refresh\n  chr = getchr\n  case chr\n  when 'r'\n    # Start a reply with the draft pre-filled\n    ai_reply_with_draft(msg, response.strip)\n  when 'y'\n    IO.popen('xclip -selection clipboard', 'w') { |io| io.write(response.strip) } rescue nil\n    IO.popen('xclip -selection primary', 'w') { |io| io.write(response.strip) } rescue nil\n    set_feedback(\"Draft copied to clipboard\", 156, 2)\n  end\n  @panes[:right].content_update = true\n  render_all\nend\n"

#ai_fix_grammar(msg, context) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 4887

def ai_fix_grammar(msg, context)
  prompt = "    Fix grammar and spelling in the following message content.\n    Return ONLY the corrected text, preserving the original language and tone.\n    If the text is already correct, return it unchanged.\n    Do not add explanations.\n\n    \#{msg['content']}\n  PROMPT\n\n  response = ai_call(prompt)\n  return unless response\n\n  # Show diff-like view\n  lines = []\n  lines << \"GRAMMAR/SPELLING FIX\".bd.fg(226)\n  lines << \"\"\n  lines << \"Original:\".fg(245)\n  lines << msg['content'].to_s\n  lines << \"\"\n  lines << \"Corrected:\".fg(156)\n  lines << response.strip\n  @panes[:right].ix = 0\n  @panes[:right].text = lines.join(\"\\n\")\n  @panes[:right].refresh\n  @panes[:right].content_update = false\n\n  @panes[:bottom].text = \" y=Copy corrected text | ESC=Dismiss\".fg(245)\n  @panes[:bottom].refresh\n  chr = getchr\n  if chr == 'y'\n    IO.popen('xclip -selection clipboard', 'w') { |io| io.write(response.strip) } rescue nil\n    IO.popen('xclip -selection primary', 'w') { |io| io.write(response.strip) } rescue nil\n    set_feedback(\"Corrected text copied to clipboard\", 156, 2)\n  end\n  @panes[:right].content_update = true\n  render_all\nend\n"

#ai_freeform(msg, context) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 4955

def ai_freeform(msg, context)
  question = bottom_ask("Ask about this message: ")
  return if question.nil? || question.strip.empty?

  prompt = "    The user is reading a message in their email/messaging client and has a question.\n\n    Message context:\n    \#{context}\n\n    User's question: \#{question}\n  PROMPT\n\n  response = ai_call(prompt)\n  return unless response\n  ai_show_response(\"AI RESPONSE\", response)\nend\n"

#ai_message_context(msg) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 4722

def ai_message_context(msg)
  lines = []
  lines << "Source: #{msg['source_type']}"
  lines << "From: #{msg['sender_name'] || msg['sender']}"
  lines << "To: #{msg['recipient'] || msg['recipients']}"
  lines << "Subject: #{msg['subject']}" if msg['subject']
  lines << "Date: #{msg['timestamp']}"
  folder = msg['folder']
  lines << "Folder: #{folder}" if folder
  lines << ""
  lines << msg['content'].to_s
  lines.join("\n")
end

#ai_reply_with_draft(msg, draft) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 4830

def ai_reply_with_draft(msg, draft)
  source_id = msg['source_id']
  source = @source_manager.sources[source_id]
  return unless source

  stype = source['plugin_type'] || source['type']
  return unless stype == 'maildir' || stype == 'imap' || stype == 'gmail'

  require_relative '../message_composer'
  identity = current_identity
  composer = MessageComposer.new(msg, identity: identity, address_book: @address_book, editor_args: @editor_args)

  # Build the reply template, then inject the draft
  template = composer.send(:build_reply_template, false)
  # Insert draft after the blank line following headers
  lines = template.lines
  header_end = nil
  lines.each_with_index do |line, i|
    if line.strip.empty? && header_end.nil?
      header_end = i
      break
    end
  end

  if header_end
    # Replace the empty body area with draft
    before = lines[0..header_end].map(&:chomp)
    # Find the attribution line and quoted text
    after_lines = lines[(header_end + 1)..]
    after = after_lines ? after_lines.map(&:chomp) : []
    new_template = (before + ["", draft, ""] + after).join("\n")
  else
    new_template = template
  end

  # Write to temp file and open editor
  tempfile = Tempfile.new(['heathrow-ai-draft', '.eml'])
  begin
    tempfile.write(new_template)
    tempfile.flush

    cursor_line = (header_end || 0) + 2
    run_editor(tempfile.path, cursor_line: cursor_line)

    tempfile.rewind
    content = tempfile.read
    return if content.rstrip == new_template.rstrip

    composed = composer.send(:parse_composed_message, content)
    finalize_compose(source, composed) if composed
  ensure
    tempfile.close
    tempfile.unlink
  end
  render_bottom_bar
end

#ai_show_response(title, response) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 4783

def ai_show_response(title, response)
  lines = []
  lines << title.bd.fg(226)
  lines << ""
  lines << response
  @panes[:right].ix = 0
  @panes[:right].text = lines.join("\n")
  @panes[:right].refresh
  @panes[:right].content_update = false
end

#ai_summarize(msg, context) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 4926

def ai_summarize(msg, context)
  prompt = "    Summarize this message concisely in bullet points.\n    Keep the same language as the original.\n\n    \#{context}\n  PROMPT\n\n  response = ai_call(prompt)\n  return unless response\n  ai_show_response(\"SUMMARY\", response)\nend\n"

#ai_translate(msg, context) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 4939

def ai_translate(msg, context)
  lang = bottom_ask("Translate to language: ", "English")
  return if lang.nil? || lang.strip.empty?

  prompt = "    Translate the following message to \#{lang.strip}.\n    Return only the translated text, no explanations.\n\n    \#{msg['content']}\n  PROMPT\n\n  response = ai_call(prompt)\n  return unless response\n  ai_show_response(\"TRANSLATION (\#{lang.strip})\", response)\nend\n"

#all_themes ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 199

def all_themes
  COLOR_THEMES.merge(@config.custom_themes)
end

#apply_view_filters(view) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 2616

def apply_view_filters(view)
  filters = view[:filters] || {}

  # Check for special filter types
  if filters['special'] == 'uncategorized'
    # Get all messages first
    all_messages = @db.get_messages({}, 1000, 0, light: true)

    # Get messages from all other configured views
    categorized_ids = Set.new

    @views.each do |view_key, other_view|
      next if view_key == @current_view  # Skip self
      if other_view && other_view[:filters] && !other_view[:filters].empty? && other_view[:filters]['special'] != 'uncategorized'
        # Convert filters for database
        symbolized_filters = {}
        other_view[:filters].each do |key, value|
          symbolized_filters[key.to_sym] = value
        end

        view_messages = @db.get_messages(symbolized_filters, 1000, 0, light: true)
        view_messages.each { |msg| categorized_ids.add(msg['id']) }
      end
    end

    # Filter to only uncategorized messages
    @filtered_messages = all_messages.reject { |msg| categorized_ids.include?(msg['id']) }
  else
    db_filters = build_db_filters(view)

    # Legacy simple filters (no rules array)
    if !filters['rules'].is_a?(Array)
      filters.each do |key, value|
        next if key == 'rules'
        db_filters[key.to_sym] = value
      end
    end

    @filtered_messages = @db.get_messages(db_filters, 1000, 0, light: true)

    # For source_id-filtered views (e.g., RSS): ensure all feeds/channels are represented
    if db_filters[:source_id] && @show_threaded
      ensure_all_feeds_loaded(db_filters[:source_id].to_i)
    end
  end
end

#apply_view_filters_with_limit(view, limit) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 2459

def apply_view_filters_with_limit(view, limit)
  db_filters = build_db_filters(view)
  @filtered_messages = @db.get_messages(db_filters, limit, 0, light: true)
end

#auto_mark_as_read(msg) ⇒ Object

Auto-mark message as read (called when message is displayed)



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# File 'lib/heathrow/ui/application.rb', line 274

def auto_mark_as_read(msg)
  mark_message_read(msg)
end

#bg_sync(folder: nil, &requery_block) ⇒ Object

Sync DB with Maildir filesystem (like mutt's live sync) folder: sync only one folder, or nil for full sync Run sync in background thread, re-render when done The block (if given) should return new filtered_messages, or nil to re-use apply_view_filters



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# File 'lib/heathrow/ui/application.rb', line 8617

def bg_sync(folder: nil, &requery_block)
  # Kill any previous sync thread
  @bg_sync_thread&.kill if @bg_sync_thread&.alive?

  view_at_start = @current_view
  db_path = @db.instance_variable_get(:@db_path)
  @bg_sync_thread = Thread.new do
    begin
      # Use a separate DB connection so we don't block the main thread
      bg_db = Heathrow::Database.new(db_path)
      sync_maildir(folder: folder, db: bg_db)
      sync_weechat(db: bg_db) unless folder
      bg_db.close
      @bg_sync_ready = view_at_start  # Signal: sync done for this view
    rescue => e
      File.open('/tmp/heathrow_debug.log', 'a') { |f| f.puts "bg_sync error: #{e.message}\n#{e.backtrace.first(3).join("\n")}" }
    end
  end
  @bg_requery_block = requery_block
end

#bottom_ask(prompt, default = '') ⇒ Object

Ask user for input via bottom pane, then restore the status line



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# File 'lib/heathrow/ui/application.rb', line 139

def bottom_ask(prompt, default = '')
  @editing = true
  result = @panes[:bottom].ask(prompt, default)
  @editing = false
  render_top_bar
  render_bottom_bar
  result
end

#build_db_filters(view) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 2435

def build_db_filters(view)
  filters = view[:filters] || {}
  db_filters = {}
  if filters['rules'].is_a?(Array)
    filters['rules'].each do |rule|
      field = rule['field']
      value = rule['value']
      case rule['op']
      when '='  then db_filters[field.to_sym] = value
      when 'like'
        case field
        when 'search'  then db_filters[:search] = value
        when 'sender'  then db_filters[:sender_pattern] = value
        when 'subject' then db_filters[:subject_pattern] = value
        when 'folder'  then db_filters[:maildir_folder] = value
        when 'label'   then db_filters[:label] = value
        when 'source'  then db_filters[:source_name] = value
        end
      end
    end
  end
  db_filters
end

#build_folder_tree(folder_names) ⇒ Object

Build a tree structure from dot-separated folder names



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# File 'lib/heathrow/ui/application.rb', line 3798

def build_folder_tree(folder_names)
  tree = {}
  folder_names.each do |name|
    parts = name.split('.')
    node = tree
    parts.each do |part|
      node[part] ||= {}
      node = node[part]
    end
  end
  tree
end

#cached_image(url) ⇒ Object

Download image to cache, return local path



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# File 'lib/heathrow/ui/application.rb', line 8240

def cached_image(url)
  cache_dir = File.join(Dir.home, '.heathrow', 'image_cache')
  FileUtils.mkdir_p(cache_dir)

  # Use URL hash as filename
  ext = File.extname(URI.parse(url).path)[0..4] rescue '.img'
  ext = '.jpg' if ext.empty?
  cache_path = File.join(cache_dir, Digest::MD5.hexdigest(url) + ext)

  return cache_path if File.exist?(cache_path) && File.size(cache_path) > 100

  # Download with timeout
  require 'open-uri'
  Timeout.timeout(5) do
    URI.open(url, 'rb', 'User-Agent' => 'Heathrow/1.0') do |remote|
      File.binwrite(cache_path, remote.read)
    end
  end
  cache_path
rescue => e
  nil
end

#change_width ⇒ Object

UI controls



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# File 'lib/heathrow/ui/application.rb', line 6403

def change_width
  @width = (@width % 6) + 1  # Cycle through 1-6 (10%-60%)
  
  # Save to config
  @config.set('ui.width', @width)
  @config.save
  
  # Update pane dimensions without recreating them
  left_width = (@w - 4) * @width / 10
  
  # Update left pane width
  @panes[:left].w = left_width

  # Update right pane position and width
  @panes[:right].x = @panes[:left].w + 4
  @panes[:right].w = @w - @panes[:left].w - 4

  # Clear entire screen to remove old border residues, then re-render
  Rcurses.clear_screen
  render_all
  
  # Show width setting in bottom bar temporarily
  width_percent = @width * 10
  @panes[:bottom].text = " Width: #{@width} (Left: #{width_percent}%, Right: #{100-width_percent}%)".fg(245)
  @panes[:bottom].refresh
end

#chat_reply_context(msg, source_type) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 5238

def chat_reply_context(msg, source_type)
  meta = msg['metadata']
  meta = JSON.parse(meta) if meta.is_a?(String)
  meta = {} unless meta.is_a?(Hash)
  sender = msg['sender_name'] || msg['sender']

  # Extract target and display name based on source type
  case source_type
  when 'weechat'
    target = meta['buffer']
    display = meta['channel_name'] || meta['buffer_short'] || msg['subject']
  when 'messenger', 'instagram'
    target = meta['thread_id'] || meta['conversation_id'] || msg['thread_id']
    display = meta['conversation_name'] || msg['subject'] || sender
  when 'whatsapp'
    target = meta['chat_jid'] || msg['recipient']
    display = meta['chat_name'] || msg['subject'] || sender
  when 'discord'
    target = meta['channel_id'] || msg['recipient']
    display = meta['channel_name'] || msg['subject'] || sender
  when 'telegram'
    target = meta['chat_id'] || msg['recipient']
    display = meta['chat_name'] || msg['subject'] || sender
  when 'slack'
    target = meta['channel_id'] || msg['recipient']
    display = meta['channel_name'] || msg['subject'] || sender
  when 'workspace'
    target = meta['channel_id'] || msg['recipient']
    display = meta['channel_name'] || msg['subject'] || sender
  end

  { target: target, display: display, sender: sender }
end

#chat_reply_editor(msg, source, source_type) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 5286

def chat_reply_editor(msg, source, source_type)
  ctx = chat_reply_context(msg, source_type)
  tempfile = Tempfile.new(['heathrow-chat', '.txt'])
  begin
    tempfile.write("# Reply to #{ctx[:sender]} in #{ctx[:display]}\n# Lines starting with # are ignored\n\n")
    tempfile.flush
    if run_editor(tempfile.path, cursor_line: 3, insert_mode: true)
      tempfile.rewind
      body = tempfile.read.lines.reject { |l| l.start_with?('#') }.join.strip
      if !body.empty?
        composed = { to: ctx[:target], subject: nil, body: body, original_message: msg }
        send_composed_message(source, composed)
      else
        set_feedback("Reply cancelled", 245, 1)
      end
    end
  ensure
    tempfile.close
    tempfile.unlink
  end
end

#chat_reply_inline(msg, source, source_type) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 5272

def chat_reply_inline(msg, source, source_type)
  ctx = chat_reply_context(msg, source_type)
  reply = bottom_ask("Reply to #{ctx[:sender]} in #{ctx[:display]}: ", '')
  if reply && !reply.strip.empty?
    saved_index = @index
    composed = { to: ctx[:target], subject: nil, body: reply.strip, original_message: msg }
    send_composed_message(source, composed)
    @index = saved_index
    @pending_view_refresh = false  # Don't let background sync jump us
  else
    set_feedback("Reply cancelled", 245, 1)
  end
end

#check_bg_sync ⇒ Object

Called from render_all — check if background sync finished



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# File 'lib/heathrow/ui/application.rb', line 8639

def check_bg_sync
  return unless @bg_sync_ready && @bg_sync_ready == @current_view
  @bg_sync_ready = nil

  old_ids = @filtered_messages.map { |m| m['id'] }

  if @bg_requery_block
    result = @bg_requery_block.call
    if result.is_a?(Array)
      @filtered_messages = result
      sort_messages
    end
    # If block returned nil (e.g. apply_view_filters sets @filtered_messages directly)
    sort_messages
  end
  @bg_requery_block = nil

  new_ids = @filtered_messages.map { |m| m['id'] }

  # Only re-render if data actually changed
  if old_ids != new_ids
    @index = 0 if @index >= @filtered_messages.size
    true  # Signal: needs re-render
  else
    false
  end
end

#check_load_more ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 2327

def check_load_more
  return unless @load_limit && @filtered_messages
  return if @filtered_messages.size < @load_limit  # Haven't hit the limit yet
  display_size = message_count
  return if display_size == 0
  return unless @index >= display_size - 10
  return if @last_autoload_index == @index
  @last_autoload_index = @index
  load_more_messages
end

#check_mailto_trigger ⇒ Object

Check for mailto trigger file (written by wezterm or external scripts)



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# File 'lib/heathrow/ui/application.rb', line 5491

def check_mailto_trigger
  mailto_file = File.join(HEATHROW_HOME, 'mailto')
  return unless File.exist?(mailto_file)
  addr = File.read(mailto_file).strip
  File.delete(mailto_file)
  return if addr.empty?

  # Find the first mail source
  mail_source = @source_manager.sources.values.find do |s|
    s['enabled'] && %w[maildir gmail imap].include?(s['plugin_type'] || s['type'])
  end
  return unless mail_source

  compose_new_mail(mail_source, mailto: addr)
end

#check_new_mail ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 7881

def check_new_mail
  now = Time.now
  @last_sync_check ||= Time.at(0)
  return if (now - @last_sync_check) < 5
  @last_sync_check = now

  @source_last_sync ||= {}

  Thread.new do
    thread_db = Heathrow::Database.new
    changed = false

    # Maildir sync: current folder every 5s (skip if no folder context)
    maildir_interval = 5
    if !@source_last_sync['maildir'] || (now - @source_last_sync['maildir']) >= maildir_interval
      folder = current_view_folder
      if folder
        changed = sync_maildir(folder: folder, db: thread_db)
      end
      @source_last_sync['maildir'] = now
    end

    # Other sources based on their poll_interval
    sources = thread_db.get_sources
    sources.each do |source|
      stype = source['plugin_type']
      next if stype == 'maildir'
      interval = (source['poll_interval'] || 900).to_i
      next if interval <= 0

      key = "#{stype}_#{source['id']}"
      next if @source_last_sync[key] && (now - @source_last_sync[key]) < interval

      src_changed = case stype
      when 'rss'       then sync_rss(db: thread_db)
      when 'web'       then sync_webwatch(db: thread_db)
      when 'messenger' then sync_messenger(db: thread_db)
      when 'instagram' then sync_instagram(db: thread_db)
      when 'weechat'   then sync_weechat(db: thread_db)
      end
      @source_last_sync[key] = now
      changed = true if src_changed
    end

    thread_db.close rescue nil
    @pending_view_refresh = true if changed
  rescue => e
    File.open('/tmp/heathrow_debug.log', 'a') { |f| f.puts "check_new_mail error: #{e.message}" }
  end
rescue => e
  # Silent fail
end

#cleanup ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 8831

def cleanup
  @db.close if @db
  # Clear screen and restore terminal
  Rcurses.clear_screen rescue nil
end

#clear_inline_image ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 8346

def clear_inline_image
  return unless @showing_image && @termpix
  @termpix.clear(
    x: @panes[:right].x,
    y: @panes[:right].y,
    width: @panes[:right].w - 1,
    height: @panes[:right].h - 1,
    term_width: @w,
    term_height: @h)
  @showing_image = false
rescue
  @showing_image = false
end

#collapse_current_item ⇒ Object

Message operations



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# File 'lib/heathrow/ui/application.rb', line 2664

def collapse_current_item
  return unless @show_threaded && @organizer
  
  msg = current_message
  return unless msg
  
  # Save current position before collapsing
  @saved_positions ||= {}
  
  if msg['is_dm_header']
    dm_key = msg['channel_id']
    if @sort_order == 'conversation'
      return if @dm_collapsed.fetch(dm_key, true)
      @dm_collapsed[dm_key] = true
    else
      return if @dm_section_collapsed
      @dm_section_collapsed = true
    end
  elsif msg['is_channel_header']
    # Already collapsed? Do nothing
    return if @channel_collapsed[msg['channel_id']]

    # Save current position
    @saved_positions[msg['channel_id']] = @index

    # Collapse the channel
    @channel_collapsed[msg['channel_id']] = true
  elsif msg['is_thread_header']
    return if @thread_collapsed[msg['thread_id']]
    @saved_positions[msg['thread_id']] = @index
    @thread_collapsed[msg['thread_id']] = true
  elsif msg['channel_id']
    # Message inside a channel - collapse the parent channel
    return if @channel_collapsed[msg['channel_id']]
    @saved_positions[msg['channel_id']] = @index
    @channel_collapsed[msg['channel_id']] = true
    
    # Move selection to the channel header
    find_and_select_header(msg['channel_id'], 'channel')
  elsif msg['thread_id']
    # Message inside a thread - collapse the parent thread
    return if @thread_collapsed[msg['thread_id']]
    @saved_positions[msg['thread_id']] = @index
    @thread_collapsed[msg['thread_id']] = true
    
    # Move selection to the thread header
    find_and_select_header(msg['thread_id'], 'thread')
  end
  
  # Re-render
  render_message_list_threaded
  render_message_content
end

#colorize_email_content(content) ⇒ Object

Colorize email content with mutt-style quote levels and signature dimming. Detects both ">" prefix quoting and indentation-based quoting (from HTML emails rendered via w3m, where blockquotes become indented text).



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# File 'lib/heathrow/ui/application.rb', line 8139

def colorize_email_content(content)
  quote_colors = [theme[:quote1] || 114, theme[:quote2] || 180,
                  theme[:quote3] || 139, theme[:quote4] || 109]
  sig_color = theme[:sig] || 5       # magenta (vim PreProc)
  link_color = theme[:link] || 4     # blue (vim String)
  email_color = theme[:email] || 5   # magenta (vim Special)
  in_signature = false
  indent_quote_level = 0  # tracks nesting from "wrote:" attribution lines

  lines = content.lines
  result = []
  lines.each_with_index do |line, i|
    stripped = line.rstrip
    # Detect signature delimiter (RFC 3676: "-- " on its own line)
    if stripped == '-- ' || stripped == '--'
      in_signature = true
      indent_quote_level = 0
      result << colorize_links(stripped, sig_color, link_color)
    elsif in_signature
      result << colorize_links(stripped, sig_color, link_color)
    elsif stripped =~ /^(>{1,})\s?/
      level = $1.length
      color = quote_colors[[level - 1, quote_colors.length - 1].min]
      result << colorize_links(stripped, color, link_color)
    else
      # Detect attribution lines (start of indented quote block)
      # Matches: "wrote:", "skrev ...:", "schrieb ...:", "a écrit :", or "date ... <email>:"
      if stripped =~ /\b(wrote|skrev|schrieb|geschreven|scrisse|escribi[oó]|a\s+[eé]crit)\b.*:\s*$/ ||
         stripped =~ /\d\d[:\.]\d\d\s.*<[^>]+>:\s*$/
        indent_quote_level += 1
        color = quote_colors[[indent_quote_level - 1, quote_colors.length - 1].min]
        result << colorize_links(stripped, color, link_color)
      elsif indent_quote_level > 0 && stripped =~ /^\s{2,}/
        # Indented line inside a quote block
        color = quote_colors[[indent_quote_level - 1, quote_colors.length - 1].min]
        result << colorize_links(stripped, color, link_color)
      else
        # Non-indented line resets indent quoting
        indent_quote_level = 0 if indent_quote_level > 0 && !stripped.empty?
        result << colorize_links(stripped, nil, link_color)
      end
    end
  end
  result.join("\n")
end

#colorize_links(line, base_color, link_color) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 8601

def colorize_links(line, base_color, link_color)
  url_re = %r{https?://[^\s<>\[\]()]+}
  parts = line.split(url_re, -1)
  urls = line.scan(url_re)
  result = ""
  parts.each_with_index do |part, i|
    result += base_color ? part.fg(base_color) : part
    result += urls[i].ul.fg(link_color) if urls[i]
  end
  result
end

#colorize_markdown(text) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 6747

def colorize_markdown(text)
  colored = ""
  text.lines.each do |line|
    case line
    when /^(#+)\s+(.+)$/  # Headers
      level = $1.length
      content = $2.chomp
      case level
      when 1
        colored += content.bd.fg(226) + "\n"  # Bright yellow bold for H1
      when 2
        colored += content.bd.fg(14) + "\n"   # Cyan bold for H2
      when 3
        colored += content.bd.fg(10) + "\n"   # Green bold for H3
      else
        colored += content.bd.fg(11) + "\n"   # Yellow bold for H4-H6
      end
    when /^\s*[-*+]\s+(.+)$/  # Bullet points
      indent = line[/^\s*/]
      content = line.sub(/^\s*[-*+]\s+/, '').chomp
      colored += indent + "• ".fg(14) + content + "\n"
    when /^\s*\d+\.\s+(.+)$/  # Numbered lists
      indent = line[/^\s*/]
      number = line[/\d+/]
      content = line.sub(/^\s*\d+\.\s+/, '').chomp
      colored += indent + "#{number}.".fg(14) + " " + content + "\n"
    when /^\s*\|/  # Table rows
      # Color pipe characters and header cells
      colored_line = line.gsub(/\|/, "|".fg(240))
      if line =~ /^\s*\|.*\|.*\|/  # Has multiple columns
        colored += colored_line
      else
        colored += line
      end
    when /^```/  # Code blocks
      colored += line.fg(245)  # Gray for code block markers
    when /^---+$/, /^===+$/  # Horizontal rules
      colored += line.chomp.fg(240) + "\n"
    when /^\s*$/  # Empty lines
      colored += line
    else
      # Process inline markdown
      processed = line.dup
      
      # Bold text **text** or __text__
      processed.gsub!(/\*\*(.+?)\*\*/, '\1'.bd)
      processed.gsub!(/__(.+?)__/, '\1'.bd)
      
      # Italic text *text* or _text_
      processed.gsub!(/\*([^*]+)\*/, '\1'.fg(252))
      processed.gsub!(/_([^_]+)_/, '\1'.fg(252))
      
      # Inline code `code`
      processed.gsub!(/`([^`]+)`/, '\1'.fg(245))
      
      # Links [text](url)
      processed.gsub!(/\[([^\]]+)\]\([^)]+\)/, '\1'.fg(14))
      
      # Key bindings or commands in backticks
      processed.gsub!(/`([A-Z]+)`/, '\1'.fg(10))
      
      colored += processed
    end
  end
  colored
end

#compose_new_mail(source, mailto: nil) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 5507

def compose_new_mail(source, mailto: nil)
  require_relative '../message_composer'
  identity = current_identity

  # Check for postponed messages (mutt-style recall)
  pcount = @db.postponed_count
  if pcount > 0
    answer = bottom_ask("#{pcount} postponed message(s). Recall? [y/N] ")
    if answer&.strip&.downcase == 'y'
      draft = recall_postponed(source)
      if draft
        composer = MessageComposer.new(nil, identity: identity, address_book: @address_book, editor_args: @editor_args)
        composed = composer.compose_draft(draft)
      end
    end
  end

  unless composed
    composer = MessageComposer.new(nil, identity: identity, address_book: @address_book, editor_args: @editor_args)

    @panes[:bottom].text = " Opening editor for new message...".fg(226)
    @panes[:bottom].refresh

    composed = composer.compose_new(mailto)
  end
  setup_display
  create_panes
  render_all
  if composed
    finalize_compose(source, composed, "Message cancelled")
  else
    set_feedback("Message cancelled", 245, 1)
  end
end

#compose_new_message ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 5439

def compose_new_message
  # Build list of sendable channels from all DB sources
  channels = []

  @source_manager.sources.each_value do |s|
    stype = s['plugin_type'] || s['type']
    next unless s['enabled']
    case stype
    when 'maildir'
      channels.unshift({ name: 'Mail', source: s, type: 'mail' })
    when 'gmail', 'imap'
      channels << { name: s['name'] || 'Email', source: s, type: 'mail' }
    when 'weechat'
      config = s['config'].is_a?(String) ? (JSON.parse(s['config']) rescue {}) : (s['config'] || {})
      platform = config['platform'] || 'chat'
      channels << { name: s['name'] || platform.capitalize, source: s, type: 'weechat' }
    end
  end

  # Channel selector: TAB cycles, ENTER confirms, ESC cancels
  idx = 0
  loop do
    ch = channels[idx]
    @panes[:bottom].text = " New message via: #{ch[:name].bd}  (TAB to cycle, ENTER to confirm, ESC to cancel)".fg(226)
    @panes[:bottom].refresh

    key = getchr
    case key
    when "\t", "TAB"
      idx = (idx + 1) % channels.size
    when "ENTER", "\r", "\n"
      break
    when "ESC", "\e"
      set_feedback("Cancelled", 245, 1)
      render_bottom_bar
      return
    end
  end

  selected = channels[idx]

  case selected[:type]
  when 'mail'
    compose_new_mail(selected[:source])
  when 'weechat'
    compose_weechat_message(selected[:source])
  end

  render_bottom_bar
end

#compose_plugins ⇒ Object

Compose plugins: loaded from ~/.heathrow/plugins/compose/*.rb Each plugin file should define a hash with :key, :label, :command Example: { key: 'i', label: 'Insight', command: 'cd ~/myapp && ./picker --pick=%pick_file' }



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# File 'lib/heathrow/ui/application.rb', line 5712

def compose_plugins
  @_compose_plugins ||= begin
    plugins = []
    dir = File.join(Dir.home, '.heathrow', 'plugins', 'compose')
    if Dir.exist?(dir)
      Dir.glob(File.join(dir, '*.rb')).each do |f|
        begin
          plugin = eval(File.read(f))
          plugins << plugin if plugin.is_a?(Hash) && plugin[:key] && plugin[:command]
        rescue => e
          File.open('/tmp/heathrow_debug.log', 'a') { |log| log.puts "Compose plugin error (#{f}): #{e.message}" }
        end
      end
    end
    plugins
  end
end

#compose_weechat_message(source) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 5542

def compose_weechat_message(source)
  config = source['config'].is_a?(String) ? (JSON.parse(source['config']) rescue {}) : (source['config'] || {})
  platform = config['platform'] || 'chat'

  prompt = "#{platform.capitalize} target (e.g. #general, username): "
  target = bottom_ask(prompt, '')
  return if target.nil? || target.strip.empty?
  target = target.strip

  # Offer inline or editor
  mode = bottom_ask("(i)nline or (e)ditor? ", 'i')
  return if mode.nil?

  body = if mode.strip.downcase.start_with?('e')
    edit_chat_in_editor(platform, target)
  else
    reply = bottom_ask("Message: ", '')
    reply&.strip
  end
  return if body.nil? || body.empty?

  require_relative '../sources/weechat'
  instance = Heathrow::Sources::Weechat.new(source)
  result = instance.send_message(target, nil, body)

  if result[:success]
    set_feedback(result[:message], 156, 3)
  else
    set_feedback(result[:message], 196, 3)
  end
end

#configure_save_shortcuts ⇒ Object

── Configure save shortcuts (s=) ── Interactive editor for save folder shortcuts stored in config.yml.



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# File 'lib/heathrow/ui/application.rb', line 4552

def configure_save_shortcuts
  shortcuts = save_folder_shortcuts.dup

  loop do
    # Display current shortcuts in right pane
    info = []
    info << "SAVE FOLDER SHORTCUTS".bd.fg(226)
    info << ""
    if shortcuts.empty?
      info << "No shortcuts configured".fg(245)
    else
      shortcuts.sort_by { |k, _| k }.each do |key, folder|
        info << "  s#{key.to_s.ljust(4).fg(10)} → #{folder}".fg(255)
      end
    end
    info << ""
    info << "Commands:".fg(245)
    info << "  a = Add new shortcut".fg(245)
    info << "  d = Delete a shortcut".fg(245)
    info << "  ESC/q = Done".fg(245)
    @panes[:right].text = info.join("\n")
    @panes[:right].refresh

    chr = getchr
    case chr
    when 'a'
      key = bottom_ask("Shortcut key (any key except B/F/=): ")
      next if key.nil? || key.strip.empty?
      key = key.strip
      if %w[B F =].include?(key)
        set_feedback("'#{key}' is reserved", 196, 2)
        next
      end
      folder = bottom_ask("Folder name: ")
      next if folder.nil? || folder.strip.empty?
      shortcuts[key] = folder.strip
    when 'd'
      key = bottom_ask("Delete shortcut key: ")
      next if key.nil? || key.strip.empty?
      shortcuts.delete(key.strip)
    when 'q', 'ESC', "\e", 'h', 'LEFT'
      break
    end
  end

  # Save to config.yml
  @config.settings['save_folders'] = shortcuts
  @config.save
  @save_folders = shortcuts  # Update cached value
  set_feedback("Save shortcuts updated", 156, 2)
  render_all
end

#copy_message_id ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 7266

def copy_message_id
  msg = current_message
  return unless msg && msg['id']
  id_str = "heathrow:#{msg['id']}"
  IO.popen('xclip -selection clipboard', 'w') { |io| io.write(id_str) } rescue nil
  IO.popen('xclip -selection primary', 'w') { |io| io.write(id_str) } rescue nil
  set_feedback("Message ID #{msg['id']} copied", 156, 2)
rescue => e
  set_feedback("Copy failed: #{e.message}", 196, 2)
end

#copy_right_pane_to_clipboard ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 7277

def copy_right_pane_to_clipboard
  text = @panes[:right].text
  if text && !text.strip.empty?
    # Strip ANSI codes for clean clipboard content
    clean = text.gsub(/\e\[[0-9;]*m/, '')
    IO.popen('xclip -selection clipboard', 'w') { |io| io.write(clean) } rescue nil
    IO.popen('xclip -selection primary', 'w') { |io| io.write(clean) } rescue nil
    set_feedback("Copied to clipboard", 156, 2)
  else
    set_feedback("Nothing to copy", 196, 2)
  end
rescue => e
  set_feedback("Copy failed: #{e.message}", 196, 2)
end

#create_panes ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 148

def create_panes
  @panes = {}

  # Create main container pane
  @panes[:main] = Pane.new(1, 1, @w, @h, 0, 0)
  
  # Top bar (like RTFM's @pT)
  @panes[:top] = Pane.new(1, 1, @w, 1, 255, @topcolor)
  
  # Left pane for message list (like RTFM's @pL)
  left_width = (@w - 4) * @width / 10
  @panes[:left] = Pane.new(2, 3, left_width, @h - 4)
  
  # Right pane for message content (like RTFM's @pR)
  @panes[:right] = Pane.new(@panes[:left].w + 4, 3, @w - @panes[:left].w - 4, @h - 4)
  
  # Bottom command bar (like RTFM's @pB)
  @panes[:bottom] = Pane.new(1, @h, @w, 1, 252, @bottomcolor)
  @panes[:bottom].emoji = true
  @panes[:bottom].emoji_refresh = -> {
    @panes.each_value { |p| p.full_refresh }
  }
  
  # Command input pane (overlays bottom when active)
  @panes[:cmd] = Pane.new(1, @h, @w, 1, 255, @cmdcolor)
  
  # Initialize scroll positions to 0
  @panes[:left].ix = 0
  @panes[:right].ix = 0
  
  # Set borders
  set_borders
end

#current_identity(msg = nil) ⇒ Object

Get identity for the current message based on its Maildir folder



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# File 'lib/heathrow/ui/application.rb', line 8126

def current_identity(msg = nil)
  msg ||= current_message
  return nil unless msg
  metadata = msg['metadata']
  metadata = JSON.parse(metadata) if metadata.is_a?(String)
  folder = metadata.is_a?(Hash) ? metadata['maildir_folder'] : nil
  folder ||= @current_folder  # Use browsing folder as fallback
  Config.identity_for_folder(folder)
end

#current_message ⇒ Object

Get the current message at @index (threaded or flat view)



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# File 'lib/heathrow/ui/application.rb', line 220

def current_message
  current_message_for_navigation
end

#current_view_folder ⇒ Object

Extract the folder name for the current view (for targeted sync)



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# File 'lib/heathrow/ui/application.rb', line 7935

def current_view_folder
  # If browsing a specific folder, sync that
  return @current_folder if @current_folder

  # For custom views with a folder filter, sync that folder
  view = @views[@current_view]
  if view && view[:filters].is_a?(Hash) && view[:filters]['rules'].is_a?(Array)
    folder_rule = view[:filters]['rules'].find { |r| r['field'] == 'folder' && r['op'] == 'like' }
    return folder_rule['value'] if folder_rule
  end

  # For All/New/mixed views: sync the few most recent folders
  if @filtered_messages && !@filtered_messages.empty?
    folders = @filtered_messages.first(50).map { |m| m['folder'] }.compact.uniq.first(5)
    return folders unless folders.empty?
  end

  nil  # No specific folder known
end

#current_view_item_source ⇒ Object

Detect if current view is tied to an RSS/web source (for feed management)



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# File 'lib/heathrow/ui/application.rb', line 1073

def current_view_item_source
  # Check if current view filters to a single source_id that is RSS or web
  view = @views && @views[@current_view]
  filters = view && view[:filters]
  return nil unless filters

  rules = filters['rules'] || filters[:rules]
  return nil unless rules

  source_rule = rules.find { |r| r['field'] == 'source_id' && r['op'] == '=' }
  return nil unless source_rule

  source = @db.get_source_by_id(source_rule['value'].to_i)
  return nil unless source

  stype = source['plugin_type'] || source['type']
  %w[rss web].include?(stype) ? source : nil
end

#custom_bindings_help ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 7054

def custom_bindings_help
  return "" unless @config
  bindings = @config.custom_bindings
  return "" if bindings.empty?

  lines = ["\n #{" CUSTOM BINDINGS".bd.fg(theme[:accent])}"]
  bindings.each do |key, b|
    desc = b[:description] || b[:shell] || b[:action].to_s
    lines << "   #{key.fg(10).ljust(16)}= #{desc}"
  end
  lines.join("\n")
end

#cycle_border ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 6430

def cycle_border
  @border = (@border + 1) % 4

  # Save to config
  @config.set('ui.border', @border)
  @config.save

  # Recreate panes (which also sets borders) and re-render
  Rcurses.clear_screen
  create_panes
  render_all
end

#cycle_date_format ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 6444

def cycle_date_format
  # Define available date formats
  formats = [
    ['%b %e', 'Mutt (Mon  D)'],
    ['%d/%m %H:%M', 'European (DD/MM HH:MM)'],
    ['%m/%d %H:%M', 'US (MM/DD HH:MM)'],
    ['%Y-%m-%d %H:%M', 'ISO (YYYY-MM-DD HH:MM)'],
    ['%d.%m %H:%M', 'European dot (DD.MM HH:MM)'],
    ['%d %b %H:%M', 'Short month (DD Mon HH:MM)'],
    ['%b %d %H:%M', 'US short (Mon DD HH:MM)']
  ]
  
  # Find current format index
  current_index = formats.find_index { |f| f[0] == @date_format } || 0
  
  # Cycle to next format
  next_index = (current_index + 1) % formats.length
  @date_format = formats[next_index][0]
  format_name = formats[next_index][1]
  
  # Save to config
  @config.set('ui.date_format', @date_format)
  @config.save
  
  # Show current format in bottom bar
  @panes[:bottom].text = " Date format: #{format_name}".fg(156)
  @panes[:bottom].refresh
  
  # Refresh message list to show new format
  render_message_list
end

#cycle_sort_order ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 6476

def cycle_sort_order
  # Cycle through: latest -> alphabetical -> sender -> from -> conversation -> unread -> source -> latest
  @sort_order = case @sort_order
  when 'latest' then 'alphabetical'
  when 'alphabetical' then 'sender'
  when 'sender' then 'from'
  when 'from' then 'conversation'
  when 'conversation' then 'unread'
  when 'unread' then 'source'
  else 'latest'  # This handles 'source' and any other value
  end
  
  # Save per-view sort for custom views, global for built-in views
  save_view_sort_order
  
  # For threaded views, we need to reload the full message list before re-sorting
  if @show_threaded && @current_view == 'A'
    # Reload all messages to ensure we have the complete list
    @filtered_messages = @db.get_messages({}, 1000, 0, light: true)
  elsif @show_threaded && @current_view == 'N'
    # Reload unread messages
    @filtered_messages = @db.get_messages({is_read: false}, 1000, 0, light: true)
  elsif @show_threaded && @current_source_filter
    # Reload messages for current source
    @filtered_messages = @db.get_messages({source_id: @current_source_filter}, nil, 0, light: true)
  end
  
  # Reset threading state to force reorganization with new sort (preserve collapsed state)
  reset_threading(true)
  
  # Re-sort and redisplay messages
  sort_messages
  
  # Force reinit the organizer with the newly sorted messages
  organize_current_messages(true)
  
  @index = 0  # Reset to top
  render_all  # Re-render everything to show the new sort
end

#delete_maildir_file(msg) ⇒ Object

Delete the Maildir file from disk (like mutt's purge)



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# File 'lib/heathrow/ui/application.rb', line 8820

def delete_maildir_file(msg)
  metadata = msg['metadata']
  metadata = JSON.parse(metadata) if metadata.is_a?(String)
  return unless metadata.is_a?(Hash)
  file_path = metadata['maildir_file']
  return unless file_path && File.exist?(file_path)
  File.delete(file_path)
rescue => e
  File.open('/tmp/heathrow_debug.log', 'a') { |f| f.puts "Delete file error: #{e.message}" } if ENV['DEBUG']
end

#delete_selected_source ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 932

def delete_selected_source
  return unless @filtered_messages[@index]
  source_id = @filtered_messages[@index]['id']
  
  confirm = bottom_ask("Delete source '#{@filtered_messages[@index]['subject']}'? (y/n): ", "")
  if confirm&.downcase == 'y'
    @source_manager.remove_source(source_id)
    show_sources
  end
end

#delete_source_item ⇒ Object

Delete an item (feed/channel) from the selected source



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# File 'lib/heathrow/ui/application.rb', line 992

def delete_source_item
  return unless @filtered_messages[@index]
  source_id = @filtered_messages[@index]['id']
  source = @db.get_source_by_id(source_id)
  return unless source

  config = source['config']
  config = JSON.parse(config) if config.is_a?(String)
  source_type = source['plugin_type'] || source['type']

  items = case source_type
          when 'rss' then config['feeds'] || []
          when 'web' then config['pages'] || []
          else return
          end

  return if items.empty?

  item_name = source_type == 'rss' ? 'feed' : 'page'
  pick = pick_from_list(format_item_names(items),
                        title: "DELETE #{item_name.upcase}", prompt: "j/k to select, Enter to delete, ESC to cancel")
  return unless pick

  removed = items.delete_at(pick)
  name = removed['title'] || removed['url'] || 'item'

  confirm = bottom_ask("Delete '#{name}'? (y/n): ", "")
  return unless confirm&.downcase == 'y'

  case source_type
  when 'rss' then config['feeds'] = items
  when 'web' then config['pages'] = items
  end

  # Remove messages from this feed/page
  deleted_msgs = purge_item_messages(source_id, source_type, removed)

  @db.execute("UPDATE sources SET config = ? WHERE id = ?", [config.to_json, source_id])
  set_feedback("Deleted: #{name} (#{deleted_msgs} messages removed)", 156, 3)
  show_sources
end

#delete_source_item_for(source) ⇒ Object

Delete item from a known source (called from non-Sources views)



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# File 'lib/heathrow/ui/application.rb', line 1127

def delete_source_item_for(source)
  config = source['config']
  config = JSON.parse(config) if config.is_a?(String)
  stype = source['plugin_type'] || source['type']

  items = case stype
          when 'rss' then config['feeds'] || []
          when 'web' then config['pages'] || []
          else return
          end
  return if items.empty?

  item_name = stype == 'rss' ? 'feed' : 'page'
  pick = pick_from_list(format_item_names(items),
                        title: "DELETE #{item_name.upcase}", prompt: "j/k to select, Enter to delete, ESC to cancel")
  return unless pick

  removed = items.delete_at(pick)
  name = removed['title'] || removed['url'] || 'item'

  confirm = bottom_ask("Delete '#{name}'? (y/n): ", "")
  return unless confirm&.downcase == 'y'

  case stype
  when 'rss' then config['feeds'] = items
  when 'web' then config['pages'] = items
  end

  deleted_msgs = purge_item_messages(source['id'], stype, removed)

  @db.execute("UPDATE sources SET config = ? WHERE id = ?", [config.to_json, source['id']])
  set_feedback("Deleted: #{name} (#{deleted_msgs} messages removed)", 156, 3)

  # Re-load the view to reflect removed messages
  reset_threading
  switch_to_view(@current_view) if @current_view
end

#display_sender(msg) ⇒ Object

Extract display name from sender (prefer sender_name, strip email angle brackets)



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# File 'lib/heathrow/ui/application.rb', line 365

def display_sender(msg)
  name = msg['sender_name']
  return name if name && !name.empty?

  raw = msg['sender'] || ''
  # "John Doe <[email protected]>" → "John Doe"
  if raw =~ /^(.+?)\s*<[^>]+>$/
    $1.strip
  else
    raw
  end
end

#edit_address_book ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 7343

def edit_address_book
  ab_path = File.expand_path('~/setup/addressbook')
  editor = ENV['EDITOR'] || 'vim'
  Rcurses.clear_screen
  system("#{editor} #{ab_path}")
  @address_book = AddressBook.new(ab_path)
  setup_display
  create_panes
  render_all
  set_feedback("Address book reloaded", 156, 2)
end

#edit_chat_in_editor(platform, target) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 5574

def edit_chat_in_editor(platform, target)
  tempfile = Tempfile.new(['heathrow-chat', '.txt'])
  begin
    tempfile.write("# #{platform.capitalize} message to #{target}\n# Lines starting with # are ignored\n\n")
    tempfile.flush
    if run_editor(tempfile.path)
      tempfile.rewind
      tempfile.read.lines.reject { |l| l.start_with?('#') }.join.strip
    end
  ensure
    tempfile.close
    tempfile.unlink
  end
end

#edit_filter ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 7608

def edit_filter
  # Only allow filter editing for configurable views (0-9, F1-F12)
  view_key = @current_view
  unless view_key =~ /^[0-9]$/ || view_key =~ /^F\d{1,2}$/
    @panes[:bottom].text = " Can only configure filters for views 0-9 and F1-F12".fg(196)
    @panes[:bottom].refresh
    sleep 2
    render_all
    return
  end

  existing_view = @views[view_key] || {}
  existing_filters = existing_view[:filters] || {}

  # Extract current rule values for defaults
  rules = existing_filters.is_a?(Hash) ? (existing_filters['rules'] || []) : []
  current_vals = {}
  rules.each do |r|
    key = "#{r['field']}_#{r['op']}"
    current_vals[key] = r['value']
  end

  # If view exists, ask if they want to edit or clear
  if existing_view[:filters] && !existing_view[:filters].empty?
    choice = bottom_ask("View #{view_key} exists. (E)dit, (C)lear, or ESC to cancel: ", '')
    return render_all if choice.nil?

    case choice.downcase
    when 'c', 'clear'
      @db.delete_view(existing_view[:id]) if existing_view[:id]
      @views.delete(view_key)
      @filtered_messages = []
      @index = 0
      render_all
      return
    when 'e', 'edit'
      # Continue to edit
    else
      render_all
      return
    end
  end

  # Filter configuration wizard
  new_rules = []

  # 1. View name
  current_name = existing_view[:name] || "View #{view_key}"
  view_name = bottom_ask("View name (ESC to cancel): ", current_name)
  return render_all if view_name.nil?
  view_name = "View #{view_key}" if view_name.empty?

  # 2. Any field (search across sender, subject, content)
  current_search = current_vals['search_like'] || ''
  search_input = bottom_ask("Any field match (searches sender/subject/content - ESC cancel): ", current_search)
  return render_all if search_input.nil?
  unless search_input.empty?
    new_rules << { 'field' => 'search', 'op' => 'like', 'value' => search_input }
  end

  # 3. Folder filter (maildir_folder)
  current_folder = current_vals['folder_like'] || current_vals['folder_='] || ''
  folder_input = bottom_ask("Folder (e.g. Personal, Work.Archive - ESC cancel): ", current_folder)
  return render_all if folder_input.nil?
  unless folder_input.empty?
    new_rules << { 'field' => 'folder', 'op' => 'like', 'value' => folder_input }
  end

  # 4. Label filter
  current_label = current_vals['label_like'] || ''
  label_input = bottom_ask("Label (e.g. Niklas, Work, Important - ESC cancel): ", current_label)
  return render_all if label_input.nil?
  unless label_input.empty?
    new_rules << { 'field' => 'label', 'op' => 'like', 'value' => label_input }
  end

  # 5. Sender pattern
  current_sender = current_vals['sender_like'] || ''
  sender_input = bottom_ask("Sender pattern (e.g. Mom|Dad|Boss - ESC cancel): ", current_sender)
  return render_all if sender_input.nil?
  unless sender_input.empty?
    new_rules << { 'field' => 'sender', 'op' => 'like', 'value' => sender_input }
  end

  # 5. Subject pattern
  current_subject = current_vals['subject_like'] || ''
  subject_input = bottom_ask("Subject pattern (ESC cancel): ", current_subject)
  return render_all if subject_input.nil?
  unless subject_input.empty?
    new_rules << { 'field' => 'subject', 'op' => 'like', 'value' => subject_input }
  end

  # 6. Source filter
  current_source = current_vals['source_like'] || ''
  source_names = @db.get_sources(true).map { |s| s['name'] }.join(', ')
  source_input = bottom_ask("Source (#{source_names} - ESC cancel): ", current_source)
  return render_all if source_input.nil?
  unless source_input.empty?
    new_rules << { 'field' => 'source', 'op' => 'like', 'value' => source_input }
  end

  # 7. Read status
  current_read = current_vals['read_=']
  default_read = current_read == false ? 'y' : (current_read == true ? 'n' : '')
  read_input = bottom_ask("Unread only? (y/n/Enter for all, ESC cancel): ", default_read)
  return render_all if read_input.nil?
  if read_input.downcase == 'y'
    new_rules << { 'field' => 'read', 'op' => '=', 'value' => false }
  elsif read_input.downcase == 'n'
    new_rules << { 'field' => 'read', 'op' => '=', 'value' => true }
  end

  # Build filters hash with rules
  filters = { 'rules' => new_rules }

  # Save the view
  view_config = {
    name: view_name,
    key_binding: view_key,
    filters: filters,
    sort_order: 'timestamp DESC'
  }
  # If updating existing view, include its id
  view_config[:id] = existing_view[:id] if existing_view[:id]

  @db.save_view(view_config)

  # Update local cache
  @views[view_key] = {
    id: view_config[:id] || @db.db.last_insert_row_id,
    name: view_name,
    filters: filters,
    sort_order: 'timestamp DESC',
    key_binding: view_key
  }

  # Apply the new filters immediately
  @current_view = view_key
  apply_view_filters(@views[view_key])
  @index = 0

  @panes[:bottom].text = " View #{view_key} configured!".fg(156)
  @panes[:bottom].refresh
  sleep(1)

  render_all
end

#edit_message_content ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 5339

def edit_message_content
  msg = current_message
  return unless msg
  return if header_message?(msg)
  msg = ensure_full_message(msg)

  source_id = msg['source_id']
  source = @db.get_source(source_id)
  return unless source

  require_relative '../message_composer'
  identity = current_identity(msg)
  composer = MessageComposer.new(nil, identity: identity, address_book: @address_book, editor_args: @editor_args)

  # Build draft from the message content
  draft = {
    'to' => '',
    'subject' => msg['subject'] || '',
    'body' => msg['content'] || ''
  }

  composed = composer.compose_draft(draft)
  if composed
    finalize_compose(source, composed, "Message cancelled")
  else
    set_feedback("Cancelled", 245, 1)
  end
end

#edit_selected_source ⇒ Object

Source management methods



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# File 'lib/heathrow/ui/application.rb', line 1738

def edit_selected_source
  return unless @filtered_messages[@index]
  
  source_config = @filtered_messages[@index]
  source = @db.get_all_sources.find { |s| s['id'] == source_config['id'] }
  return unless source
  
  # Show edit options in right pane
  options = []
  options << "EDIT SOURCE: #{source['name']}".bd.fg(226)
  options << "=" * 40
  options << ""
  options << "What would you like to edit?"
  options << ""
  options << "1. Change color"
  options << "2. Change name"
  options << "3. Change poll interval"
  options << "4. Toggle enabled/disabled"
  options << ""
  options << "Enter number (1-4) or ESC to cancel"
  
  @panes[:right].text = options.join("\n")
  @panes[:right].refresh
  
  # Get user choice
  choice = bottom_ask("Edit option (1-4): ", "")
  
  if choice && !choice.empty?
    case choice
    when '1'
      edit_source_color(source)
    when '2'
      edit_source_name(source)
    when '3'
      edit_source_interval(source)
    when '4'
      @source_manager.toggle_source(source['id'])
    end
    
    load_source_colors
  end
  
  show_sources
end

#edit_source_color(source) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 1783

def edit_source_color(source)
  # Use the same color picker as the wizard
  begin
    wizard = Heathrow::SourceWizard.new(@source_manager, @panes[:bottom], @panes[:right])
    selected_color = wizard.select_color
    
    if selected_color
      # Update the source color in database
      @db.execute("UPDATE sources SET color = ? WHERE id = ?", selected_color, source['id'])
      # Reload sources to get updated values
      @source_manager.load_sources
      
      @panes[:bottom].text = " Color updated to #{selected_color}!".fg(selected_color)
      @panes[:bottom].refresh
      sleep(1)
    end
  rescue => e
    @panes[:bottom].text = " Error: #{e.message}".fg(196)
    @panes[:bottom].refresh
    sleep(4)  # Stay longer for error messages
  end
end

#edit_source_interval(source) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 1821

def edit_source_interval(source)
  current_interval = source['poll_interval']
  new_interval = bottom_ask("Poll interval in seconds (current: #{current_interval}): ", current_interval.to_s)
  
  if new_interval && !new_interval.empty? && new_interval.to_i > 0
    @db.execute("UPDATE sources SET poll_interval = ? WHERE id = ?", new_interval.to_i, source['id'])
    # Reload sources to get updated values
    @source_manager.load_sources
    
    @panes[:bottom].text = " Poll interval updated successfully!".fg(156)
    @panes[:bottom].refresh
    sleep(1)
  end
end

#edit_source_name(source) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 1806

def edit_source_name(source)
  current_name = source['name']
  new_name = bottom_ask("New name (current: #{current_name}): ", current_name)
  
  if new_name && !new_name.empty? && new_name != current_name
    @db.execute("UPDATE sources SET name = ? WHERE id = ?", new_name, source['id'])
    # Reload sources to get updated values
    @source_manager.load_sources
    
    @panes[:bottom].text = " Name updated successfully!".fg(156)
    @panes[:bottom].refresh
    sleep(1)
  end
end

#ensure_all_feeds_loaded(source_id) ⇒ Object

Ensure all feeds/channels from a source have at least some messages loaded



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# File 'lib/heathrow/ui/application.rb', line 2382

def ensure_all_feeds_loaded(source_id)
  source = @db.get_source_by_id(source_id)
  return unless source
  config = source['config']
  config = JSON.parse(config) if config.is_a?(String)
  return unless config.is_a?(Hash)

  stype = source['plugin_type']
  return unless stype == 'rss'

  feeds = config['feeds'] || []
  return if feeds.empty?
  expected = feeds.map { |f| f['title'] || f['url'] }

  # Find which feeds are already in loaded messages
  loaded_ids = Set.new
  loaded_feeds = Set.new
  @filtered_messages.each do |msg|
    loaded_ids << msg['id']
    meta = msg['metadata']
    meta = JSON.parse(meta) if meta.is_a?(String) rescue nil
    next unless meta.is_a?(Hash)
    loaded_feeds << meta['feed_title'] if meta['feed_title']
  end

  missing = expected - loaded_feeds.to_a
  return if missing.empty?

  # Load latest 20 messages per missing feed using json_extract
  light_cols = "id, source_id, external_id, thread_id, parent_id, sender, sender_name, recipients, subject, substr(content, 1, 200) as content, timestamp, received_at, read AS is_read, starred AS is_starred, archived, labels, metadata, attachments, folder, replied"
  missing.each do |feed_name|
    rows = @db.execute(
      "SELECT #{light_cols} FROM messages WHERE source_id = ? AND json_extract(metadata, '$.feed_title') = ? ORDER BY timestamp DESC LIMIT 20",
      source_id, feed_name
    )
    rows = rows.reject { |r| loaded_ids.include?(r['id']) }
    rows = rows.map do |r|
      r = r.dup
      r['metadata'] = JSON.parse(r['metadata']) if r['metadata'].is_a?(String) rescue nil
      r['labels'] = JSON.parse(r['labels']) if r['labels'].is_a?(String) rescue nil
      r['attachments'] = JSON.parse(r['attachments']) if r['attachments'].is_a?(String) rescue nil
      r['recipients'] = JSON.parse(r['recipients']) if r['recipients'].is_a?(String) rescue nil
      r
    end
    @filtered_messages.concat(rows)
  end
rescue => e
  File.open('/tmp/heathrow-crash.log', 'a') { |f|
    f.puts "#{Time.now.strftime('%Y-%m-%d %H:%M:%S')} ensure_all_feeds_loaded: #{e.class}: #{e.message}"
    f.puts "  #{e.backtrace&.first(3)&.join("\n  ")}"
  }
end

#ensure_full_message(msg) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 5175

def ensure_full_message(msg)
  if msg && msg['id'] && !msg['_full_loaded'] && !msg['is_header']
    full = @db.get_message(msg['id'])
    if full
      if msg.frozen?
        # Replace frozen hash in filtered_messages with mutable copy
        idx = @filtered_messages.index { |m| m.equal?(msg) }
        msg = full.merge('_full_loaded' => true)
        @filtered_messages[idx] = msg if idx
      else
        msg.merge!(full)
        msg['_full_loaded'] = true
      end
    end
  end
  msg
end

#expand_current_item ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 2718

def expand_current_item
  return unless @show_threaded && @organizer
  
  msg = current_message
  return unless msg
  
  @saved_positions ||= {}
  restore_position = nil
  
  if msg['is_dm_header']
    dm_key = msg['channel_id']
    if @sort_order == 'conversation'
      @dm_collapsed[dm_key] = !@dm_collapsed.fetch(dm_key, true)
    else
      @dm_section_collapsed = !@dm_section_collapsed
    end
  elsif msg['is_channel_header']
    # Toggle the channel collapse state
    @channel_collapsed[msg['channel_id']] = !@channel_collapsed[msg['channel_id']]

    # If expanding, restore saved position if available
    if !@channel_collapsed[msg['channel_id']] && @saved_positions[msg['channel_id']]
      restore_position = @saved_positions[msg['channel_id']]
    end
  elsif msg['is_thread_header']
    # Toggle the thread collapse state
    @thread_collapsed[msg['thread_id']] = !@thread_collapsed[msg['thread_id']]

    if !@thread_collapsed[msg['thread_id']] && @saved_positions[msg['thread_id']]
      restore_position = @saved_positions[msg['thread_id']]
    end
  end
  
  # Re-render
  render_message_list_threaded
  
  # Restore position if we had one saved
  if restore_position
    # Make sure the position is still valid
    max_index = filtered_messages_size - 1
    @index = [restore_position, max_index].min
    render_message_list
  end
  
  render_message_content
end

#extract_image_urls(html) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 8219

def extract_image_urls(html)
  return [] unless html
  # Extract full img tags, then filter by attributes
  tags = html.scan(/<img[^>]*>/i)
  urls = []
  tags.each do |tag|
    src = tag[/src=["']([^"']+)["']/i, 1]
    next unless src
    # Skip by URL patterns (tracking, icons, social media badges)
    next if src =~ /track|pixel|spacer|beacon|\.gif$|icon|logo|badge|button|social|facebook|linkedin|twitter|instagram/i
    # Skip by HTML dimensions (tracking pixels and small icons)
    w = tag[/width=["']?(\d+)/i, 1]&.to_i
    h = tag[/height=["']?(\d+)/i, 1]&.to_i
    next if w && w <= 40
    next if h && h <= 40
    urls << src
  end
  urls
end

#extract_original_attachments(msg) ⇒ Object

Extract original attachments from a message for forwarding



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# File 'lib/heathrow/ui/application.rb', line 5407

def extract_original_attachments(msg)
  metadata = msg['metadata']
  metadata = JSON.parse(metadata) if metadata.is_a?(String) rescue nil
  return nil unless metadata.is_a?(Hash)

  file_path = metadata['maildir_file']
  return nil unless file_path && File.exist?(file_path)

  require 'mail'
  require 'tmpdir'
  mail = Mail.read(file_path)
  return nil if mail.attachments.empty?

  tmp_dir = File.join(Dir.tmpdir, "heathrow-fwd-#{Process.pid}")
  FileUtils.mkdir_p(tmp_dir)

  paths = []
  mail.attachments.each do |att|
    next unless att.filename
    out = File.join(tmp_dir, att.filename)
    File.write(out, att.decoded)
    paths << out
  end
  paths.empty? ? nil : paths
rescue => e
  File.open('/tmp/heathrow-crash.log', 'a') { |f|
    f.puts "#{Time.now.strftime('%Y-%m-%d %H:%M:%S')} extract_attachments: #{e.class}: #{e.message}"
    f.puts "  #{e.backtrace&.first(3)&.join("\n  ")}"
  }
  nil
end

#file_message ⇒ Object

── Save to folder (s key) ── Moves email on disk, updates folder + labels in DB for all types. Works on tagged messages if any are tagged; otherwise on current message. Sub-keys: any key for shortcuts (except B/F/=), B=browse all, F=browse favorites, ==configure



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# File 'lib/heathrow/ui/application.rb', line 4297

def file_message
  # Get target folder
  shortcuts = save_folder_shortcuts
  hint = shortcuts.map { |k, v| "s#{k}:#{v.split('.').last}" }.join(" ")
  hint = hint.empty? ? "" : " [#{hint}]"
  tagged_hint = @tagged_messages.size > 0 ? " (#{@tagged_messages.size} tagged)" : ""
  set_feedback("Save to folder:#{hint} B:Browse F:Fav =:Config#{tagged_hint}", 226, 5)
  chr = getchr(5)
  if chr.nil? || chr == 'ESC' || chr == "\e"
    @feedback_expires_at = nil
    render_bottom_bar
    return
  end

  if chr == '='
    configure_save_shortcuts
    return
  end

  if chr == 'B'
    dest = save_browse_folders
    return unless dest
  elsif chr == 'F'
    dest = save_browse_favorites
    return unless dest
  elsif shortcuts[chr]
    dest = shortcuts[chr]
  else
    initial = chr == 'ENTER' ? '' : chr.to_s
    dest = bottom_ask("Move to folder: ", initial)
    return if dest.nil? || dest.strip.empty? || dest.strip == initial.strip
    dest = dest.strip
  end

  # Validate folder exists on disk
  maildir_root = @config.get('sources.maildir.path') || File.join(Dir.home, 'Main', 'Maildir')
  folder_path = File.join(maildir_root, ".#{dest}")
  unless Dir.exist?(folder_path)
    confirm = bottom_ask("Folder '#{dest}' doesn't exist. Create it? [y/N] ")
    unless confirm&.strip&.downcase == 'y'
      set_feedback("Save cancelled", 245, 2)
      return
    end
  end

  # Collect messages to file
  msgs = if @tagged_messages.size > 0
           @filtered_messages.select { |m| m['id'] && @tagged_messages.include?(m['id']) }
         else
           msg = current_message
           return unless msg && !msg['is_header'] && !msg['is_channel_header'] && !msg['is_thread_header']
           [msg]
         end
  return if msgs.empty?

  count = 0
  failed = 0
  filed_ids = Set.new
  msgs.each do |msg|
    begin
      file_single_message(msg, dest)
      filed_ids << msg['id'] if msg['id']
      count += 1
    rescue => e
      failed += 1
    end
  end

  # Remove filed messages from current view (by id, works in both flat and threaded mode)
  @filtered_messages.reject! { |m| m['id'] && filed_ids.include?(m['id']) }
  if @show_threaded
    @display_messages&.reject! { |m| m['id'] && filed_ids.include?(m['id']) }
    # Force organizer to rebuild from updated @filtered_messages
    organize_current_messages(true)
  end
  @tagged_messages.clear if @tagged_messages.size > 0
  @index = [@index, (@filtered_messages.size - 1)].min
  @index = 0 if @index < 0 || @filtered_messages.empty?

  msg_text = "Moved #{count} message#{count > 1 ? 's' : ''} to #{dest}"
  msg_text += " (#{failed} failed)" if failed > 0
  set_feedback(msg_text, failed > 0 ? 208 : 156, 2)
  render_all
end

#file_single_message(msg, dest) ⇒ Object

Move a single message to a folder (disk + DB)



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# File 'lib/heathrow/ui/application.rb', line 4383

def file_single_message(msg, dest)
  metadata = msg['metadata']
  metadata = JSON.parse(metadata) if metadata.is_a?(String) rescue {}
  metadata = {} unless metadata.is_a?(Hash)

  # Move the Maildir file on disk if this is an email
  file_path = metadata['maildir_file']
  if file_path && File.exist?(file_path)
    require_relative '../sources/maildir'
    require 'fileutils'
    maildir_root = @config.get('sources.maildir.path') || File.join(Dir.home, 'Main', 'Maildir')
    new_path = Heathrow::Sources::Maildir.move_to_folder(file_path, maildir_root, dest)
    if new_path
      metadata['maildir_file'] = new_path
      metadata['maildir_folder'] = dest
    end
  end

  # Preserve existing labels, set folder as first label
  existing = msg['labels']
  existing = JSON.parse(existing) if existing.is_a?(String) rescue []
  existing = [] unless existing.is_a?(Array)
  labels = ([dest] + existing).uniq

  @db.execute(
    "UPDATE messages SET folder = ?, labels = ?, metadata = ? WHERE id = ?",
    dest, labels.to_json, metadata.to_json, msg['id']
  )
  msg['folder'] = dest
  msg['metadata'] = metadata
  msg['labels'] = labels

  # Mark as read (we've seen it if we're filing it)
  if msg['is_read'].to_i == 0
    @db.mark_as_read(msg['id'])
    msg['is_read'] = 1
    sync_maildir_flag(msg, 'S', true)
  end
end

#finalize_compose(source, composed, cancel_label = "cancelled") ⇒ Object

Unified send prompt loop: handles send, edit, postpone, cancel



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# File 'lib/heathrow/ui/application.rb', line 5761

def finalize_compose(source, composed, cancel_label = "cancelled")
  require_relative '../message_composer'
  # Rebuild panes after editor (vim leaves terminal in unknown state)
  setup_display
  create_panes
  render_all
  pending_attachments = Array(composed[:attachments]).dup
  loop do
    attachments = prompt_attachments(pending_attachments, composed: composed)
    case attachments
    when :postpone
      postpone_message(source, composed)
      return
    when :edit
      # Preserve attachments across edit
      pending_attachments = Array(composed[:attachments]).dup
      # Re-open editor with current composed data
      composer = MessageComposer.new(nil, identity: current_identity, address_book: @address_book, editor_args: @editor_args)
      re_composed = composer.compose_draft(composed.transform_keys(&:to_s))
      setup_display
      create_panes
      render_all
      if re_composed
        composed = re_composed
        composed[:attachments] = pending_attachments unless pending_attachments.empty?
      end
      # If unchanged (re_composed nil), just return to send prompt
    when nil
      set_feedback(cancel_label, 245, 1)
      return
    else
      composed[:attachments] = attachments unless attachments.empty?
      send_composed_message(source, composed)
      return
    end
  end
end

#find_and_select_header(id, type) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 2982

def find_and_select_header(id, type)
  # Find the header in the display messages
  @display_messages.each_with_index do |msg, idx|
    if type == 'channel' && msg['is_channel_header'] && msg['channel_id'] == id
      @index = idx
      return
    elsif type == 'thread' && msg['is_thread_header'] && msg['thread_id'] == id
      @index = idx
      return
    end
  end
end

#find_current_group_messages(msg) ⇒ Object

Find messages in the same group as the current message/header Returns nil if not in a group context



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# File 'lib/heathrow/ui/application.rb', line 3600

def find_current_group_messages(msg)
  return nil unless msg && @show_threaded && @organizer

  # If standing on a header, use its section_messages directly
  if header_message?(msg)
    return msg['section_messages'] if msg['section_messages']
  end

  # Standing on a regular message: walk backward to find its section header
  idx = @index - 1
  while idx >= 0
    prev = @display_messages[idx]
    if prev && (header_message?(prev))
      return prev['section_messages'] if prev['section_messages']
      break
    end
    idx -= 1
  end

  nil
end

#find_mail_attachment(mail, att) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 3415

def find_mail_attachment(mail, att)
  name = att['name'] || att['filename']
  mail.attachments.find { |a| a.filename == name } ||
    mail.attachments.find { |a| a.filename&.include?(name.to_s.split("\n").first) }
end

#flatten_folder_tree(tree, prefix = '', depth = 0, collapsed = {}) ⇒ Object

Flatten folder tree into displayable lines with indent



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# File 'lib/heathrow/ui/application.rb', line 3812

def flatten_folder_tree(tree, prefix = '', depth = 0, collapsed = {})
  lines = []
  tree.keys.sort.each do |key|
    full_name = prefix.empty? ? key : "#{prefix}.#{key}"
    has_children = !tree[key].empty?
    is_collapsed = collapsed[full_name]

    lines << {
      name: key,
      full_name: full_name,
      depth: depth,
      has_children: has_children,
      collapsed: is_collapsed
    }

    if has_children && !is_collapsed
      lines.concat(flatten_folder_tree(tree[key], full_name, depth + 1, collapsed))
    end
  end
  lines
end

#flush_pending_read ⇒ Object

Flush any deferred read mark (call when leaving a view)



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# File 'lib/heathrow/ui/application.rb', line 246

def flush_pending_read
  return unless @pending_mark_read
  mark_message_read(@pending_mark_read)
  @pending_mark_read = nil
end

#folder_browser_loop ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 3959

def folder_browser_loop
  loop do
    chr = getchr
    case chr
    when 'j', 'DOWN'
      @folder_browser_index = (@folder_browser_index + 1) % @folder_display.size if @folder_display.size > 0
      render_folder_browser
    when 'k', 'UP'
      @folder_browser_index = (@folder_browser_index - 1) % @folder_display.size if @folder_display.size > 0
      render_folder_browser
    when 'l', 'RIGHT', 'ENTER'
      # RTFM-style: RIGHT/l/Enter = enter/expand
      folder = @folder_display[@folder_browser_index]
      next unless folder
      if folder[:has_children] && folder[:collapsed]
        # Expand collapsed folder
        @folder_collapsed.delete(folder[:full_name])
        @folder_display = flatten_folder_tree(@folder_tree, '', 0, @folder_collapsed)
        render_folder_browser
      elsif folder[:has_children] && !folder[:collapsed]
        # Already expanded — enter (open) the folder
        open_folder(folder[:full_name])
        break
      else
        # Leaf folder — open it
        open_folder(folder[:full_name])
        break
      end
    when 'h', 'LEFT'
      # RTFM-style: LEFT/h = collapse or go to parent
      folder = @folder_display[@folder_browser_index]
      next unless folder
      if folder[:has_children] && !folder[:collapsed]
        # Collapse this folder
        @folder_collapsed[folder[:full_name]] = true
        @folder_display = flatten_folder_tree(@folder_tree, '', 0, @folder_collapsed)
        render_folder_browser
      elsif folder[:depth] > 0
        # Go to parent folder
        parent_name = folder[:full_name].split('.')[0..-2].join('.')
        parent_idx = @folder_display.index { |f| f[:full_name] == parent_name }
        if parent_idx
          @folder_browser_index = parent_idx
          render_folder_browser
        end
      end
    when ' ', 'SPACE'
      # Toggle collapse/expand
      folder = @folder_display[@folder_browser_index]
      if folder && folder[:has_children]
        if folder[:collapsed]
          @folder_collapsed.delete(folder[:full_name])
        else
          @folder_collapsed[folder[:full_name]] = true
        end
        @folder_display = flatten_folder_tree(@folder_tree, '', 0, @folder_collapsed)
        render_folder_browser
      end
    when 'F'
      show_favorites_browser
      break
    when '+'
      # Add/remove selected folder from favorites
      folder = @folder_display[@folder_browser_index]
      if folder
        favorites = get_favorite_folders
        if favorites.include?(folder[:full_name])
          favorites.delete(folder[:full_name])
          @panes[:bottom].text = " Removed #{folder[:full_name]} from favorites".fg(226)
        else
          favorites << folder[:full_name]
          @panes[:bottom].text = " Added #{folder[:full_name]} to favorites".fg(156)
        end
        save_favorite_folders(favorites)
        @browser_favorites = favorites
        # Quick re-render left pane only (skip slow count query)
        render_folder_browser_left_only
        @panes[:bottom].refresh
      end
    when 'PgDOWN'
      @folder_browser_index = [@folder_browser_index + (@panes[:left].h - 2), @folder_display.size - 1].min
      render_folder_browser
    when 'PgUP'
      @folder_browser_index = [@folder_browser_index - (@panes[:left].h - 2), 0].max
      render_folder_browser
    when 'HOME'
      @folder_browser_index = 0
      render_folder_browser
    when 'END'
      @folder_browser_index = @folder_display.size - 1
      render_folder_browser
    when 'q', 'ESC', "\e"
      @in_folder_browser = false
      @in_favorites_browser = false
      render_all
      break
    else
      # Check folder shortcuts
      shortcuts = get_folder_shortcuts
      if shortcuts[chr]
        open_folder(shortcuts[chr])
        break
      end
    end
  end
end

#folder_message_count(folder_name) ⇒ Object

Get counts for a single folder (fast — one query)



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# File 'lib/heathrow/ui/application.rb', line 3835

def folder_message_count(folder_name)
  # Use range query to leverage folder index (5x faster than OR + LIKE)
  row = @db.db.get_first_row(
    "SELECT COUNT(*) as total, SUM(CASE WHEN read = 0 THEN 1 ELSE 0 END) as unread FROM messages WHERE folder = ?",
    [folder_name]
  )
  { total: (row && row['total']) || 0, unread: (row && row['unread']) || 0 }
rescue
  { total: 0, unread: 0 }
end

#format_attachments(attachments) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 8567

def format_attachments(attachments)
  return nil unless attachments.is_a?(Array) && !attachments.empty?
  lines = []
  lines << "Attachments:".bd.fg(208)
  attachments.each_with_index do |att, i|
    name = att['name'] || att['filename'] || 'unnamed'
    size = att['size'] ? " (#{human_size(att['size'])})" : ''
    ctype = att['content_type']&.split(';')&.first || ''
    lines << "  [#{i + 1}] #{name}#{size}  #{ctype}".fg(250)
  end
  lines << "  Press 'v' to view/save attachments".fg(245)
  lines.join("\n")
end

#format_calendar_event(attachments) ⇒ Object

Format attachment list for display Parse and format calendar events from ICS attachments



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# File 'lib/heathrow/ui/application.rb', line 8396

def format_calendar_event(attachments)
  attachments = [] unless attachments.is_a?(Array)
  # Find ICS data from attachments or inline MIME parts
  ics_data = nil
  begin
    require 'mail'

    # First check attachments array
    ics_att = attachments.is_a?(Array) && attachments.find do |att|
      ct = (att['content_type'] || '').downcase
      name = (att['name'] || att['filename'] || '').downcase
      ct.include?('calendar') || ct.include?('ics') || name.end_with?('.ics')
    end

    # Get the maildir file path (from attachment or message metadata)
    file = ics_att['source_file'] if ics_att
    file ||= @_current_render_msg_file  # Set by render_message_content
    return nil unless file && File.exist?(file)

    # Parse MIME parts for calendar data
    mail = Mail.read(file)
    if mail.multipart?
      mail.parts.each do |part|
        ct = (part.content_type || '').downcase
        if ct.include?('calendar') || ct.include?('ics')
          ics_data = part.decoded
          break
        end
        if part.multipart?
          part.parts.each do |sub|
            sct = (sub.content_type || '').downcase
            if sct.include?('calendar') || sct.include?('ics')
              ics_data = sub.decoded
              break
            end
          end
          break if ics_data
        end
      end
    end
    ics_data ||= File.read(file) if file.end_with?('.ics')
    return nil unless ics_data && ics_data.include?('BEGIN:')

    # Use VcalView parser
    # Use basic inline ICS parser
    event = parse_ics_basic(ics_data)
    return nil unless event

    # Format the event for display
    lines = []
    lines << "Calendar Event".bd.fg(226)
    lines << ""
    lines << "WHAT:  #{event[:summary]}".fg(156) if event[:summary]
    if event[:dates]
      when_str = event[:dates]
      when_str += " (#{event[:weekday]})" if event[:weekday]
      when_str += ", #{event[:times]}" if event[:times]
      lines << "WHEN:  #{when_str}".fg(39)
    end
    lines << "WHERE: #{event[:location]}".fg(45) if event[:location] && !event[:location].to_s.empty?
    lines << "RECUR: #{event[:recurrence]}".fg(180) if event[:recurrence]
    lines << "STATUS: #{event[:status]}".fg(245) if event[:status]
    lines << ""
    lines << "ORGANIZER: #{event[:organizer]}".fg(2) if event[:organizer]
    if event[:participants] && !event[:participants].to_s.strip.empty?
      lines << "PARTICIPANTS:".fg(2)
      lines << event[:participants].fg(245)
    end
    # Skip description (email body already shows it, and ICS descriptions
    # often contain raw URLs that can overflow the pane)
    lines.join("\n")
  rescue => e
    nil  # Don't crash on calendar parse errors
  end
end

#format_item_names(items) ⇒ Object

Format item names with status indicators for picker Does a quick HTTP check for feeds without a recent status



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# File 'lib/heathrow/ui/application.rb', line 1167

def format_item_names(items)
  # Quick-check feeds that have no status or stale status (>1 hour)
  needs_check = items.select do |it|
    it.is_a?(Hash) && it['url'] && (it['last_status'].nil? || it['last_sync'].to_i < Time.now.to_i - 3600)
  end

  unless needs_check.empty?
    set_feedback("Checking #{needs_check.size} feeds...", 245, 0)
    needs_check.each do |it|
      ok = system("curl -sf --head --max-time 5 #{Shellwords.escape(it['url'])} >/dev/null 2>&1")
      it['last_status'] = ok ? (it['last_status'] || 'ok') : 'unreachable'
      it['last_sync'] = Time.now.to_i
    end
  end

  items.map do |it|
    name = it.is_a?(Hash) ? (it['title'] || it['url'] || it['name'] || '?') : it.to_s
    status = it.is_a?(Hash) ? it['last_status'] : nil
    if status == 'ok'
      "✓ #{name}"
    elsif status
      "✗ #{name}"
    else
      "  #{name}"
    end
  end
end

#format_message_line(msg, selected) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 1509

def format_message_line(msg, selected)
  # Extract message details
  timestamp = (parse_timestamp(msg['timestamp']) || "").ljust(6)
  sender = display_sender(msg)

  # Get subject, or use content preview, or "(no subject)"
  if msg['subject'] && !msg['subject'].empty?
    subject = msg['subject']
  elsif msg['content'] && !msg['content'].empty?
    # Use first line of content, cleaned up
    content_preview = msg['content'].lines.first || msg['content']
    content_preview = content_preview.strip.gsub(/\s+/, ' ')  # Normalize whitespace
    subject = content_preview[0..50] + (content_preview.length > 50 ? '…' : '')
  else
    subject = '(no subject)'
  end
  
  # Use source color (custom or default by source type)
  source_color = get_source_color(msg)
  
  # Calculate available width accounting for border, arrow, and potential star
  available_width = @panes[:left].w - 2  # Account for border
  available_width -= 2 if @panes[:left].border  # Extra space for border chars
  available_width -= 3  # Space for N flag + replied flag + indicator column (tag/star/attachment/D)
  
  # Truncate sender to fit (use display_width for CJK characters)
  sender_max = 15
  dw = Rcurses.display_width(sender)
  sender_display = if dw > sender_max
    truncate_to_width(sender, sender_max - 1) + '…'
  else
    sender + ' ' * [sender_max - dw, 0].max
  end

  # Build the line with timestamp, icon and sender
  icon = get_source_icon(msg['source_type'])
  line_prefix = "#{timestamp} #{icon} #{sender_display} "

  # Calculate remaining space for subject (use display_width for CJK)
  prefix_dw = Rcurses.display_width(line_prefix)
  subject_width = available_width - prefix_dw - 1  # -1 for safety
  subject_dw = Rcurses.display_width(subject)
  if subject_width > 0 && subject_dw > subject_width
    subject = truncate_to_width(subject, subject_width - 1) + '…'
    subject_dw = Rcurses.display_width(subject)
  end

  prefix_part = line_prefix
  subject_part = subject.strip
  total_dw = Rcurses.display_width(prefix_part) + Rcurses.display_width(subject_part)
  padding = " " * [available_width - total_dw, 0].max
  finalize_line(msg, selected, prefix_part, subject_part, source_color, padding)
end

#format_poll_interval(seconds) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 7467

def format_poll_interval(seconds)
  seconds = (seconds || 900).to_i
  return "Polling disabled" if seconds <= 0
  if seconds < 60
    "Poll every #{seconds}s"
  elsif seconds < 3600
    "Poll every #{seconds / 60}m"
  else
    "Poll every #{seconds / 3600}h"
  end
end

#format_source_line(msg, selected) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 1563

def format_source_line(msg, selected)
  available_width = @panes[:left].w - 2
  available_width -= 2 if @panes[:left].border

  # Health indicator: ✓ or ✗
  health = msg['health_ok'] ? "✓".fg(40) : "✗".fg(196)

  # Source color
  src_color = get_source_color(msg)

  # Poll interval (short form)
  interval = (msg['poll_interval'] || 900).to_i
  poll_str = if interval <= 0 then "off"
             elsif interval < 60 then "#{interval}s"
             elsif interval < 3600 then "#{interval / 60}m"
             else "#{interval / 3600}h"
             end

  # Counts
  unread = msg['unread_count'].to_i
  total = msg['msg_count'].to_i
  count_str = "#{unread}/#{total}"

  # Fixed layout: [✓ ][name 20ch] [poll 3ch] [count right-aligned]
  name_max = 20
  name = msg['subject'].to_s
  name = name.length > name_max ? name[0..name_max - 2] + '…' : name.ljust(name_max)

  poll_col = poll_str.rjust(3)
  count_col = count_str.rjust(12)
  padding_len = [available_width - 2 - name_max - 1 - 3 - 1 - 12, 0].max
  padding = " " * padding_len

  line = "#{name} #{poll_col} #{count_col}#{padding}"

  if selected
    content = "#{name} #{poll_col} #{count_col}"
    health + " " + content.bd.ul.fg(src_color) + padding
  elsif msg['enabled'].to_i == 0
    health + " " + line.fg(240)
  else
    health + " " + name.fg(src_color) + " #{poll_col} #{count_col}#{padding}".fg(245)
  end
end

#forward_message ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 5368

def forward_message
  msg = current_message
  return unless msg
  msg = ensure_full_message(msg)
  source_id = msg['source_id']
  
  # Check if source supports sending
  source = @db.get_source_by_id(source_id)
  return unless source
  
  require_relative '../message_composer'
  identity = current_identity(msg)
  composer = MessageComposer.new(msg, identity: identity, address_book: @address_book, editor_args: @editor_args)

  # Show composing status
  @panes[:bottom].text = " Opening editor to forward message...".fg(226)
  @panes[:bottom].refresh

  # Extract attachments BEFORE editor
  orig_attachments = extract_original_attachments(msg)

  # Compose the forward
  composed = composer.compose_forward

  # Rebuild panes after editor (vim clears the screen)
  setup_display
  create_panes
  render_all

  if composed
    # Include original attachments
    composed[:attachments] = orig_attachments if orig_attachments && !orig_attachments.empty?
    finalize_compose(source, composed, "Forward cancelled")
  else
    set_feedback("Forward cancelled", 245, 1)
  end
end

#get_extended_help_text ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 6814

def get_extended_help_text
  "\#{\"HEATHROW - COMPREHENSIVE DOCUMENTATION\".bd.fg(226)}\n\#{\"=\" * 60}\n\nHeathrow is a unified terminal interface for all your communication sources.\nIt aggregates messages from email, WhatsApp, Telegram, Discord, Reddit, \nRSS feeds, and more into a single, keyboard-driven interface.\n\n\#{\"KEYBOARD SHORTCUTS\".bd.fg(theme[:accent])}\n\n\#{\"Navigation\".fg(11)}\n  j/\u2193        Move down in message list\n  k/\u2191        Move up in message list  \n  h/\u2190        Go back / parent view\n  l/\u2192/Enter  Open message / enter\n  PgDn       Page down (10 messages)\n  PgUp       Page up (10 messages)\n  Home       Go to first message\n  End        Go to last message\n  \n\#{\"Views & Filters\".fg(11)}\n  A          Show all messages\n  N          Show new (unread) messages\n  S          Sources configuration\n  0-9        Custom filtered views\n  Ctrl-f     Edit/create filter for current view\n  K          Kill/delete a numbered view\n  \n\#{\"Message Actions\".fg(11)}\n  R          Toggle read/unread status\n  Space      Collapse/expand thread (threaded view)\n  G          Cycle view mode (flat / threaded / folder-grouped)\n  { / }      Move section up/down (reorder feeds/channels)\n  t          Tag message and move to next\n  T          Tag/untag all messages in view\n  Ctrl+t     Tag by regex (default=all, for batch ops)\n  n          Jump to next unread message\n  p          Jump to previous unread message\n  */-        Toggle star/favorite\n  d          Toggle delete mark\n  r          Reply to message (if supported)\n  g          Reply all / group reply\n  \n\#{\"Source Management\".fg(11)} (in Sources view)\n  a          Add new source\n  e          Edit selected source\n  d          Delete selected source\n  t          Test selected source\n  Space      Enable/disable source\n  Enter      Show messages from source\n  \n\#{\"UI Controls\".fg(11)}\n  w          Cycle left pane width (1-5)\n  Ctrl-b     Cycle border style (none/single/double)\n  D          Cycle date format\n  o          Cycle sort order (newest/oldest/unread)\n  P          Settings popup (theme, format, etc.)\n  r          Refresh all panes\n  ?          Show help (press again for extended help)\n  q          Quit Heathrow\n\n\#{\"AI Assistant\".fg(11)}\n  I          AI assistant (Claude Code integration)\n               d = Draft a reply\n               f = Fix grammar/spelling\n               s = Summarize message\n               t = Translate message\n               a = Ask anything about the message\n\n\#{\"FILTER SYNTAX\".bd.fg(theme[:accent])}\n  \n  Filters support powerful pattern matching:\n  - Comma (,) = AND condition - all must match\n  - Pipe (|) = OR condition - any can match\n  - Combine both for complex filters\n  \n  Examples:\n  - \"error|warning\" = matches error OR warning\n  - \"critical,production\" = matches critical AND production\n  - \"error|warning,production\" = (error OR warning) AND production\n  \n\#{\"SOURCE TYPES\".bd.fg(theme[:accent])}\n  \n\#{\"Email (IMAP)\".fg(39)}\nConnect to any IMAP email server. Supports Gmail, Outlook, Yahoo, etc.\nRequired: server, username, password\n\n\#{\"RSS/Atom Feeds\".fg(226)}\nSubscribe to RSS and Atom feeds. Supports multiple feeds per source.\nRequired: feed URLs\n\n\#{\"WhatsApp\".fg(40)}\nConnect via WhatsApp Web API (requires separate service).\nRequired: API URL\n\n\#{\"Telegram\".fg(51)}\nConnect using Telegram API credentials.\nRequired: API ID, API Hash, phone number\n\n\#{\"Discord\".fg(99)}\nConnect to Discord servers and DMs.\nRequired: Bot or user token\n\n\#{\"Reddit\".fg(202)}\nMonitor subreddits and messages.\nRequired: Client ID, client secret\n\n\#{\"Web Monitor\".fg(208)}\nMonitor web pages for changes.\nRequired: URL, optional CSS selector\n  \n\#{\"CONFIGURATION\".bd.fg(theme[:accent])}\n  \n  Config file: ~/.heathrow/config.yml\n  Database: ~/.heathrow/heathrow.db\n  \n  Settings include:\n  - UI preferences (width, borders, theme)\n  - Polling intervals\n  - Notification settings\n  - Custom key bindings\n  \n\#{\"TIPS & TRICKS\".bd.fg(theme[:accent])}\n  \n  1. Use numbered views (0-9) to organize messages by topic\n  2. Combine source filters with content patterns for precision\n  3. Star important messages for quick access\n  4. Use 'o' to change sort order based on your workflow\n  5. Press 'w' to adjust pane width for your screen size\n  \n  For more information, visit: https://github.com/yourusername/heathrow\n  HELP\nend\n"

#get_favorite_folders ⇒ Object

Favorite Folders ==========


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# File 'lib/heathrow/ui/application.rb', line 4100

def get_favorite_folders
  stored = nil
  begin
    result = @db.execute("SELECT value FROM settings WHERE key = 'favorite_folders'")
    stored = JSON.parse(result[0]['value']) if result && result[0]
  rescue
  end
  stored || @config.rc('favorite_folders', []).dup
end

#get_folder_shortcuts ⇒ Object

Quick Folder Shortcuts ==========


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# File 'lib/heathrow/ui/application.rb', line 4214

def get_folder_shortcuts
  stored = nil
  begin
    result = @db.execute("SELECT value FROM settings WHERE key = 'folder_shortcuts'")
    stored = JSON.parse(result[0]['value']) if result && result[0]
  rescue
  end
  stored || @config.rc('folder_shortcuts', {}).dup
end

#get_help_text ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 6949

def get_help_text
  " \#{\"HEATHROW - Communication Hub In The Terminal\".bd.fg(226)}\n \n \#{\"BASIC KEYS\".bd.fg(theme[:accent])}\n   \#{\"?\".fg(10)}       = Show this help text (press again for extended help)\n   \#{\"q\".fg(10)}       = Quit Heathrow\n   \#{\"Q\".fg(10)}       = QUIT (force quit without saving state)\n   \#{\"Ctrl-r\".fg(10)}   = Refresh current view (sync + reload)\n   \#{\"Ctrl-l\".fg(10)}   = Redraw panes (no fetch)\n   \n \#{\"NAVIGATION\".bd.fg(theme[:accent])}\n   \#{\"j/\u2193\".fg(10)}     = Move down in message list (rounds to top)\n   \#{\"k/\u2191\".fg(10)}     = Move up in message list (rounds to bottom)\n   \#{\"h/\u2190\".fg(10)}     = Go back / parent view\n   \#{\"l/\u2192/\u23CE\".fg(10)}   = Open message / enter\n   \#{\"PgDn\".fg(10)}    = Go one page down in message list\n   \#{\"PgUp\".fg(10)}    = Go one page up in message list\n   \#{\"Home\".fg(10)}    = Go to first message\n   \#{\"End\".fg(10)}     = Go to last message\n   \#{\"J\".fg(10)}       = Jump to date (yyyy-mm-dd)\n   \n \#{\"RIGHT PANE SCROLLING\".bd.fg(theme[:accent])}\n   \#{\"S-\u2193\".fg(10)}     = Scroll content down one line\n   \#{\"S-\u2191\".fg(10)}     = Scroll content up one line\n   \#{\"S-PgDn\".fg(10)}  = Scroll content down one page\n   \#{\"S-PgUp\".fg(10)}  = Scroll content up one page\n   \#{\"S-RIGHT\".fg(10)} = Scroll content down one page\n   \#{\"S-LEFT\".fg(10)}  = Scroll content up one page\n   \#{\"TAB\".fg(10)}     = Scroll content down one page\n \n \#{\"VIEWS & FILTERS\".bd.fg(theme[:accent])}\n   \#{\"A\".fg(10)}       = Show all messages\n   \#{\"N\".fg(10)}       = Show new (unread) messages only\n   \#{\"S\".fg(10)}       = Sources configuration and management\n   \#{\"0-9\".fg(10)}     = Custom filtered views (configurable)\n   \#{\"F1-F12\".fg(10)}  = Additional custom views (configurable)\n   \#{\"Ctrl-f\".fg(10)}  = Edit/create filter for current view (0-9, F1-F12)\n   \#{\"K\".fg(10)}       = Kill/delete a view (with confirmation)\n \n \#{\"MESSAGE ACTIONS\".bd.fg(theme[:accent])}\n   \#{\"R\".fg(10)}       = Toggle read/unread status\n   \#{\"M\".fg(10)}       = Mark all messages in view as read\n   \#{\"Space\".fg(10)}   = Collapse/expand thread (threaded view)\n   \#{\"G\".fg(10)}       = Cycle view mode (flat / threaded / folder-grouped)\n   \#{\"{ }\".fg(10)}     = Move section up/down (reorder feeds/channels)\n   \#{\"t\".fg(10)}       = Tag message and move to next\n   \#{\"T\".fg(10)}       = Tag/untag all messages in view\n   \#{\"Ctrl-t\".fg(10)}  = Tag by regex (default=all, for batch ops)\n   \#{\"n\".fg(10)}       = Jump to next unread message\n   \#{\"p\".fg(10)}       = Jump to previous unread message\n   \#{\"x\".fg(10)}       = Open in browser (HTML emails rendered, others open URL)\n   \#{\"*/\u2212\".fg(10)}     = Toggle star/favorite\n   \#{\"d\".fg(10)}       = Toggle delete mark\n   \#{\"<\".fg(10)}       = Purge delete-marked messages\n   \#{\"r\".fg(10)}       = Reply to message\n   \#{\"g\".fg(10)}       = Reply all / group reply\n   \#{\"f\".fg(10)}       = Forward message\n   \#{\"e\".fg(10)}       = Reply with editor (full headers)\n   \#{\"E\".fg(10)}       = Edit message as new (compose from content)\n   \#{\"m\".fg(10)}       = Mail/compose new message\n   \#{\"y\".fg(10)}       = Copy message ID to clipboard (for CC sessions)\n   \n \#{\"SOURCE MANAGEMENT\".bd.fg(theme[:accent])} (in Sources view with 'S')\n   \#{\"a\".fg(10)}       = Add new source\n   \#{\"e\".fg(10)}       = Edit selected source\n   \#{\"d\".fg(10)}       = Delete selected source\n   \#{\"Enter\".fg(10)}   = Show all messages from selected source\n   \#{\"Space\".fg(10)}   = Enable/disable source\n \n \#{\"FOLDER NAVIGATION\".bd.fg(theme[:accent])}\n   \#{\"B\".fg(10)}       = Browse all folders (folder tree)\n   \#{\"F\".fg(10)}       = Browse favorite folders\n   \#{\"+\".fg(10)}       = Add/remove current folder from favorites\n   \#{\"s\".fg(10)}       = Save/file message to folder (s1-s9 for shortcuts)\n   \#{\"sB\".fg(10)}      = Save by browsing all folders\n   \#{\"sF\".fg(10)}      = Save by browsing favorite folders\n   \#{\"s=\".fg(10)}      = Configure save folder shortcuts\n   \#{\"v\".fg(10)}       = View/save/open attachments\n   \#{\"V\".fg(10)}       = Toggle inline image display\n   \#{\"l\".fg(10)}       = Add/remove labels (+label / -label / ? to list)\n   \#{\"/\".fg(10)}       = Full-text search (notmuch)\n\n \#{\"AI ASSISTANT\".bd.fg(theme[:accent])}\n   \#{\"I\".fg(10)}       = AI assistant (Claude Code integration)\n   \#{\"  d\".fg(10)}     = Draft a reply\n   \#{\"  f\".fg(10)}     = Fix grammar/spelling\n   \#{\"  s\".fg(10)}     = Summarize message\n   \#{\"  t\".fg(10)}     = Translate message\n   \#{\"  a\".fg(10)}     = Ask anything about the message\n\n \#{\"UI CONTROLS\".bd.fg(theme[:accent])}\n   \#{\"w\".fg(10)}       = Change left pane width (20% \u2192 60%)\n   \#{\"Ctrl-b\".fg(10)}  = Cycle border style (none/single/double)\n   \#{\"D\".fg(10)}       = Cycle date/time format\n   \#{\"o\".fg(10)}       = Cycle sort order (newest/oldest/unread first)\n   \#{\"i\".fg(10)}       = Invert sort order (toggle reverse)\n   \#{\"Y/C-y\".fg(10)}   = Copy right pane content to clipboard\n   \#{\"P\".fg(10)}       = Settings popup (theme, format, etc.)\n   \#{\"@\".fg(10)}       = Address book (a=add sender, e=edit file)\n\#{custom_bindings_help}\n Press \#{\"?\".fg(10)} again for extended help \u2022 Any other key to continue\n  HELP\nend\n"

#get_source_color(msg) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 1715

def get_source_color(msg)
  # For sources display, check if we have a custom color first
  if msg['source_color']
    c = parse_color_value(msg['source_color'])
    return c if c
  end

  # Try to get color from cache using source_id or id
  source_id = msg['source_id'] || msg['id']
  if source_id && @source_colors[source_id]
    c = parse_color_value(@source_colors[source_id])
    return c if c
  end
  
  # Fallback to theme-defined colors by source type
  source_type = (msg['source_type'] || msg['plugin_type']).to_s.downcase
  t = theme
  key = :"source_#{source_type == 'email' ? 'maildir' : source_type}"
  t[key] || t[:source_default] || 15
end

#go_first ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 2481

def go_first
  navigate { |_| @index = 0 }
end

#go_last ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 2485

def go_last
  navigate { |n| @index = n - 1 }
end

#go_to_folder ⇒ Object

Go to folder via shortcut key (g key in main view)



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# File 'lib/heathrow/ui/application.rb', line 4233

def go_to_folder
  shortcuts = get_folder_shortcuts
  # Show shortcuts in right pane
  info = []
  info << "FOLDER SHORTCUTS".bd.fg(226)
  info << "Press a key to jump to folder:".fg(245)
  info << ""
  shortcuts.sort_by { |k, _| k }.each do |key, folder|
    info << "  #{key.ljust(4).fg(10)} → #{folder}".fg(255)
  end
  info << ""
  info << "ESC to cancel".fg(245)
  @panes[:right].text = info.join("\n")
  @panes[:right].refresh

  chr = getchr
  folder = shortcuts[chr]
  if folder
    open_folder(folder)
  else
    render_message_content  # Restore right pane
  end
end

#handle_input_key(chr) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 555

def handle_input_key(chr)
  
  # Handle help mode: scroll keys stay in help, everything else exits
  if @in_help_mode
    case chr
    when 'S-DOWN', 'j', 'DOWN'
      @panes[:right].linedown
      return
    when 'S-UP', 'k', 'UP'
      @panes[:right].lineup
      return
    when 'S-RIGHT', 'TAB', 'PgDOWN', 'S-PgDOWN', ' ', 'SPACE'
      @panes[:right].pagedown
      return
    when 'S-LEFT', 'S-TAB', 'PgUP', 'S-PgUP'
      @panes[:right].pageup
      return
    when 'HOME'
      @panes[:right].top
      return
    when 'END'
      @panes[:right].bottom
      return
    when '?'
      if @showing_help
        show_extended_help
        @showing_help = false
      else
        show_help
      end
      return
    when '', nil
      # Ignore empty/partial escape sequences from held keys
      return
    else
      # Any other key exits help mode
      @in_help_mode = false
      @showing_help = false
      @panes[:right].content_update = true
      render_message_content
    end
  end
  
  # Debug log key presses and state
  
  # Special handling for source view
  if @current_view == 'S'
    case chr
    when 'a'
      if selected_source_has_items?
        add_source_item
      else
        add_new_source
      end
      return
    when 'e'
      edit_selected_source
      return
    when 'd'
      if selected_source_has_items?
        delete_source_item
      else
        delete_selected_source
      end
      return
    when 't'
      test_selected_source
      return
    when ' ', 'SPACE'
      toggle_selected_source
      return
    when 'j', 'DOWN'
      move_down
      render_sources_info  # Update right pane to show new selection
      return
    when 'k', 'UP'
      move_up
      render_sources_info  # Update right pane to show new selection
      return
    when 'ENTER', "\r", "\n"
      # Show messages from selected source
      if @filtered_messages[@index]
        source_id = @filtered_messages[@index]['id']
        show_source_messages(source_id)
      end
      return
    when 'ESC', "\e", 'q'
      @in_source_view = false
      @panes[:right].content_update = true
      switch_to_default_view
      return
    when 'A', 'N', '0'..'9',
         'F1', 'F2', 'F3', 'F4', 'F5', 'F6', 'F7', 'F8', 'F9', 'F10', 'F11', 'F12'
      @in_source_view = false
      @panes[:right].content_update = true
      # Let it fall through to regular handler to switch views
    when 'Y'
      copy_right_pane_to_clipboard
      return
    when 'c'
      pick_source_color
      return
    when 'p'
      set_source_poll_interval
      return
    when 'C-R'
      refresh_all
      show_sources  # Reload source list
      return
    when 'C-L'
      redraw_panes
      return
    when 'w', 'C-B', 'o', 'i', 'D', 'P'
      # Let these fall through to regular handler for UI controls and sorting
    else
      # Don't handle other keys in source view
      return
    end
  end
  
  # Context-sensitive feed/page management in views tied to RSS/web sources
  if (chr == 'a' || chr == 'd') && @current_view != 'S' && !@in_source_view
    source = current_view_item_source
    if source
      if chr == 'a'
        add_source_item_for(source)
      else
        delete_source_item_for(source)
      end
      return
    end
  end

  # Custom keybindings from heathrowrc (checked before built-in keys)
  if @config && (binding = @config.custom_bindings[chr])
    run_custom_binding(binding)
    return
  end

  case chr
  when 'q', 'Q'
    quit
  when '?'
    if @showing_help
      show_extended_help
    else
      show_help
    end
  when 'r'
    reply_to_message
  when 'e'
    reply_to_message(force_editor: true)
  when 'E'
    edit_message_content
  when 'R'
    toggle_read_status
  when 'M'
    mark_all_view_read(force_all: true)
  when 'g'
    reply_all_to_message
  when 'f'
    forward_message
  when 'y'
    copy_message_id
  when 'm'
    compose_new_message
  when 'C-R'  # Ctrl-R: refresh current view (sync its sources + reload)
    refresh_current_view
  when 'C-L'  # Ctrl-L: redraw panes only (no fetch)
    redraw_panes
  when 'j', 'DOWN'
    move_down
  when 'k', 'UP'
    move_up
  when 'h', 'LEFT'
    collapse_current_item
  when 'l', 'RIGHT'
    expand_current_item
  when 'ENTER'
    open_message
  when 'J'
    jump_to_date
  when 'x'
    open_message_external
  when 'X'
    open_in_brrowser
  when 'HOME'
    go_first
  when 'END'
    go_last
  when 'PgDOWN'
    page_down
  when 'PgUP'
    page_up
  when 'L'
    load_more_messages
  when 'w'
    change_width
  when 'Y', 'C-Y'
    copy_right_pane_to_clipboard
  when 'c'
    set_view_top_bg
  when 'C-B'
    cycle_border
  when 'o'
    cycle_sort_order
  when 'i'
    toggle_sort_invert
  when 'D'
    cycle_date_format
  when 'P'
    show_settings_popup
  when 'S-DOWN'
    @panes[:right].linedown
    @panes[:right].content_update = false
  when 'S-UP'
    @panes[:right].lineup
    @panes[:right].content_update = false
  when 'S-RIGHT', 'TAB'
    @panes[:right].pagedown
    @panes[:right].content_update = false
  when 'S-LEFT', 'S-TAB'
    @panes[:right].pageup
    @panes[:right].content_update = false
  when 'A'
    show_all_messages
  when 'N'
    show_new_messages
  when 'S'
    # Set flag BEFORE calling show_sources
    @in_source_view = true
    show_sources
  when 'C-F'
    edit_filter
  when 'K'
    kill_view
  when '0'..'9'
    switch_to_view(chr)
  when 'F1', 'F2', 'F3', 'F4', 'F5', 'F6', 'F7', 'F8', 'F9', 'F10', 'F11', 'F12'
    switch_to_view(chr)
  when '}', 'C-DOWN'
    move_section(1)  # Move section down
  when '{', 'C-UP'
    move_section(-1)  # Move section up
  when ' ', 'SPACE'
    toggle_collapse_expand
  when 'G'
    # Cycle: flat → threaded → folder-grouped
    cycle_view_mode
  when 'u', 'U'
    # Unsee current message (remove from browsed set)
    unsee_current_message
  when 'S-SPACE'
    # Mark all browsed messages as permanently read
    mark_browsed_as_read
  when 't'
    toggle_tag
  when 'T'
    tag_all_toggle
  when 'C-T'
    tag_by_regex
  when 'n'
    jump_to_next_unread
  when 'p'
    jump_to_prev_unread
  when '*', '-'
    toggle_star
  when 'd'
    toggle_delete_mark
  when '<'
    purge_deleted
  when '/'
    notmuch_search
  when 'B'
    show_folder_browser
  when 'F'
    show_favorites_browser
  when '+'
    toggle_favorite_folder
  when 's'
    file_message
  when 'l'
    label_message
  when 'v'
    view_attachments
  when 'Z'
    open_in_timely
  when 'I'
    ai_assistant
  when 'V'
    toggle_inline_image
  when '@'
    address_book_menu
  when 'ESC', "\e"
    if @showing_image
      clear_inline_image
      @panes[:right].content_update = true
      render_message_content
    end
  end
end

#header_message?(msg) ⇒ Boolean 



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# File 'lib/heathrow/ui/application.rb', line 209

def header_message?(msg)
  msg['is_header'] || msg['is_channel_header'] || msg['is_thread_header'] || msg['is_dm_header']
end

#html_to_text(html, width = 80) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 8360

def html_to_text(html, width = 80)
  return nil unless html && !html.strip.empty?
  # Override charset to UTF-8 (DB content is always UTF-8, but HTML may declare Windows-1252 etc.)
  fixed = html.gsub(/charset\s*=\s*"?[^";\s>]+/i, 'charset="UTF-8"')
  text = IO.popen(['w3m', '-T', 'text/html', '-dump', '-cols', width.to_s], 'r+') do |io|
    io.write(fixed)
    io.close_write
    io.read
  end
  return nil unless text

  # Extract links from HTML that w3m hides (URL differs from link text)
  links = []
  html.scan(/<a\s[^>]*href\s*=\s*["']([^"']+)["'][^>]*>(.*?)<\/a>/im) do |url, link_text|
    clean_text = link_text.gsub(/<[^>]+>/, '').strip
    next if url.start_with?('mailto:') || url.start_with?('#') || url.start_with?('cid:')
    next if clean_text.empty?
    next if clean_text == url || text.include?(url)
    links << [clean_text, url]
  end
  links.uniq! { |_, url| url }

  if links.any?
    text += "\n\nLinks:\n"
    links.each_with_index do |(label, url), i|
      text += "  [#{i + 1}] #{label}: #{url}\n"
    end
  end

  text
rescue => e
  nil  # Fall back to plain text content
end

#human_size(bytes) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 8581

def human_size(bytes)
  return '0 B' unless bytes && bytes > 0
  units = ['B', 'KB', 'MB', 'GB']
  exp = (Math.log(bytes) / Math.log(1024)).to_i
  exp = units.length - 1 if exp >= units.length
  "%.1f %s" % [bytes.to_f / (1024 ** exp), units[exp]]
end

#image_urls_from_attachments(msg) ⇒ Object

Extract image URLs from HTML content Extract image URLs from message attachments (chat sources)



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# File 'lib/heathrow/ui/application.rb', line 8201

def image_urls_from_attachments(msg)
  raw = msg['attachments']
  return [] unless raw
  atts = raw.is_a?(String) ? (JSON.parse(raw) rescue []) : raw
  return [] unless atts.is_a?(Array)

  atts.filter_map do |att|
    url = att['url'] || att['proxy_url']
    next unless url && url.start_with?('http')
    ctype = (att['content_type'] || '').downcase
    # Include if content_type is image, or filename looks like an image
    fname = (att['filename'] || att['name'] || '').downcase
    if ctype.start_with?('image') || fname =~ /\.(jpe?g|png|gif|webp|bmp|svg)$/i
      url
    end
  end
end

#init_termpix ⇒ Object

Convert HTML to readable text via w3m Initialize Termpix for inline image display



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# File 'lib/heathrow/ui/application.rb', line 8187

def init_termpix
  return @termpix if defined?(@termpix)
  begin
    require 'termpix'
    @termpix = Termpix::Display.new
    @termpix = nil unless @termpix.supported?
  rescue LoadError
    @termpix = nil
  end
  @termpix
end

#invalidate_counts ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 213

def invalidate_counts
  @cached_unread = nil
  @cached_starred = nil
  @cached_total = nil
end

#is_unread_view? ⇒ Boolean

Check if current view is an unread filter



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# File 'lib/heathrow/ui/application.rb', line 317

def is_unread_view?
  # Check key binding
  return true if @current_view == 'N'

  # Check if custom view has unread filter
  if @views[@current_view]
    view = @views[@current_view]
    if view && view[:filters]
      filters = view[:filters]
      # Check if filtering by read = false
      return true if filters['read'] == false || filters[:read] == false
      # Check if using rules with read field
      if filters['rules'].is_a?(Array)
        return filters['rules'].any? { |rule| rule['field'] == 'read' && rule['value'] == false }
      end
    end
  end

  false
end

#jump_to_date ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 2489

def jump_to_date
  input = bottom_ask("Jump to date (yyyy-mm-dd): ", Time.now.strftime('%Y-%m-%d'))
  return unless input && input =~ /\d{4}-\d{2}-\d{2}/

  target_ts = Time.parse("#{input} 00:00:00").to_i rescue nil
  return set_feedback("Invalid date", 196, 2) unless target_ts

  # Load messages around this date if needed
  # Find how many messages are newer than this date
  count_newer = @db.db.get_first_value(
    "SELECT COUNT(*) FROM messages WHERE timestamp >= ? AND (archived = 0 OR archived IS NULL)",
    [target_ts]
  ) || 0

  if count_newer > @load_limit.to_i
    @load_limit = count_newer + 100
    # Reload with expanded limit
    if @current_folder
      light_cols = "id, source_id, external_id, thread_id, parent_id, sender, sender_name, recipients, subject, substr(content, 1, 200) as content, timestamp, received_at, read AS is_read, starred AS is_starred, archived, labels, metadata, attachments, folder, replied"
      @filtered_messages = @db.execute(
        "SELECT #{light_cols} FROM messages WHERE folder = ? ORDER BY timestamp DESC LIMIT ?",
        @current_folder, @load_limit
      )
    elsif @current_view == 'A'
      @filtered_messages = @db.get_messages({}, @load_limit, 0, light: true)
    elsif @current_view == 'N'
      @filtered_messages = @db.get_messages({is_read: false}, @load_limit, 0, light: true)
    elsif @views[@current_view]
      apply_view_filters_with_limit(@views[@current_view], @load_limit)
    end
    sort_messages
  end

  # Find the first message on or before this date
  idx = @filtered_messages.index { |m| m['timestamp'].to_i <= target_ts }
  if idx
    @index = idx
    set_feedback("Jumped to #{input} (#{@filtered_messages.size} messages loaded)", 156, 2)
  else
    @index = @filtered_messages.size - 1
    set_feedback("No messages found at #{input}, showing oldest", 226, 2)
  end
  render_all
end

#jump_to_next_unread ⇒ Object

Jump to next unread message (wraps around)



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# File 'lib/heathrow/ui/application.rb', line 2848

def jump_to_next_unread
  display = if @show_threaded && @display_messages && !@display_messages.empty?
              @display_messages
            else
              @filtered_messages
            end
  return set_feedback("No messages", 245, 2) if display.empty?

  # Search visible list for next unread after current position
  display.size.times do |i|
    idx = (@index + 1 + i) % display.size
    msg = display[idx]
    next unless msg
    next if header_message?(msg)
    if msg['is_read'].to_i == 0
      @index = idx
      track_browsed_message
      render_all
      return
    end
  end

  # In threaded view, try uncollapsing to find hidden unread
  if @show_threaded && @organizer
    # Find all unread messages in the raw list, try each one starting after current position
    unread_msgs = @filtered_messages.select { |m| m['is_read'].to_i == 0 && m['id'] }
    unread_msgs.each do |unread|
      uncollapse_for_message(unread)
    end
    if unread_msgs.any?
      # Re-render to rebuild display_messages with uncollapsed sections
      organize_current_messages(true)
      render_message_list_threaded
      new_display = @display_messages || @filtered_messages
      # Find the first visible unread after current position
      new_display.size.times do |i|
        idx = (@index + 1 + i) % new_display.size
        m = new_display[idx]
        next unless m && m['id'] && m['is_read'].to_i == 0
        next if header_message?(m)
        @index = idx
        track_browsed_message
        render_all
        return
      end
    end
  end

  set_feedback("No unread messages in this view", 208, 2)
end

#jump_to_prev_unread ⇒ Object

Jump to previous unread message (wraps around)



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# File 'lib/heathrow/ui/application.rb', line 2900

def jump_to_prev_unread
  display = (@show_threaded && @display_messages && !@display_messages.empty?) ? @display_messages : @filtered_messages
  size = display.size
  return if size == 0

  size.times do |i|
    idx = (@index - 1 - i) % size
    msg = display[idx]
    next unless msg
    next if header_message?(msg)
    if msg['is_read'].to_i == 0
      @index = idx
      track_browsed_message
      render_all
      return
    end
  end

  # Try uncollapsing to find hidden unread (search backwards)
  if @show_threaded && @organizer
    unread_msgs = @filtered_messages.select { |m| m['is_read'].to_i == 0 && m['id'] }
    unread_msgs.each do |unread|
      uncollapse_for_message(unread)
    end
    if unread_msgs.any?
      organize_current_messages(true)
      render_message_list_threaded
      new_display = @display_messages || @filtered_messages
      new_size = new_display.size
      new_size.times do |i|
        idx = (@index - 1 - i) % new_size
        m = new_display[idx]
        next unless m && m['id'] && m['is_read'].to_i == 0
        next if header_message?(m)
        @index = idx
        track_browsed_message
        render_all
        return
      end
    end
  end

  set_feedback("No unread messages in this view", 208, 2)
end

#kill_view ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 7566

def kill_view
  # Ask which view to kill
  @panes[:bottom].clear
  view_key = bottom_ask("Kill which view (1-9, F1-F12)? ", "")

  return if view_key.nil? || view_key.empty?
  # Accept 1-9 or F1-F12
  return unless view_key.match?(/^[1-9]$/) || view_key.match?(/^F\d{1,2}$/i)
  view_key = view_key.upcase if view_key =~ /^f/i  # Normalize F-keys

  view = @views[view_key]

  if view.nil?
    @panes[:bottom].text = " View #{view_key} doesn't exist".fg(196)
    @panes[:bottom].refresh
    sleep(1)
    render_bottom_bar
    return
  end

  # Confirm deletion
  @panes[:bottom].clear
  confirm = bottom_ask("Kill view '#{view[:name]}'? (y/n) ", "")

  if confirm && confirm.downcase == 'y'
    @db.delete_view(view[:id]) if view[:id]
    @views.delete(view_key)

    @panes[:bottom].text = " View #{view_key} killed".fg(40)
    @panes[:bottom].refresh
    sleep(1)

    if @current_view == view_key
      show_all_messages
    else
      render_bottom_bar
    end
  else
    render_bottom_bar
  end
end

#label_message ⇒ Object

── Label management (l key) ── Add or remove labels on the current message or all tagged messages. Labels are stored as a JSON array. A message can have many labels. Views can filter on labels: { field: "label", op: "like", value: "MyLabel" }



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# File 'lib/heathrow/ui/application.rb', line 4609

def label_message
  tagged_hint = @tagged_messages.size > 0 ? " (#{@tagged_messages.size} tagged)" : ""
  action = bottom_ask("Label#{tagged_hint} (+add / -remove / ? to list): ", '+')
  return if action.nil?

  if action.strip == '?'
    show_all_labels
    return
  end

  adding = !action.start_with?('-')
  label_name = action.sub(/^[+\-]\s*/, '').strip
  return if label_name.empty?

  # Collect messages to label
  msgs = if @tagged_messages.size > 0
           @filtered_messages.select { |m| m['id'] && @tagged_messages.include?(m['id']) }
         else
           msg = current_message
           return unless msg && !msg['is_header'] && !msg['is_channel_header'] && !msg['is_thread_header']
           [msg]
         end
  return if msgs.empty?

  count = 0
  msgs.each do |msg|
    labels = msg['labels']
    labels = JSON.parse(labels) if labels.is_a?(String) rescue []
    labels = [] unless labels.is_a?(Array)

    if adding
      next if labels.include?(label_name)
      labels << label_name
    else
      next unless labels.include?(label_name)
      labels.delete(label_name)
    end

    @db.execute("UPDATE messages SET labels = ? WHERE id = ?", labels.to_json, msg['id'])
    msg['labels'] = labels
    count += 1
  end

  @tagged_messages.clear if @tagged_messages.size > 0

  verb = adding ? "Added" : "Removed"
  set_feedback("#{verb} label '#{label_name}' on #{count} message#{count > 1 ? 's' : ''}", 156, 3)
  render_all
end

#load_mail_file(maildir_file) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 3382

def load_mail_file(maildir_file)
  require 'mail'
  old_stderr = $stderr.dup
  $stderr.reopen(File.open(File::NULL, 'w'))
  mail = Mail.read(maildir_file)
  $stderr.reopen(old_stderr)
  old_stderr.close
  mail
rescue => e
  set_feedback("Error reading mail: #{e.message}", 196, 2)
  nil
end

#load_more_messages ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 2338

def load_more_messages
  return unless @load_limit
  # Remember current message so we can restore position after reload
  cur = current_message
  cur_id = cur['id'] if cur
  old_count = @filtered_messages.size
  @load_limit += 200

  if @current_folder
    light_cols = "id, source_id, external_id, thread_id, parent_id, sender, sender_name, recipients, subject, substr(content, 1, 200) as content, timestamp, received_at, read AS is_read, starred AS is_starred, archived, labels, metadata, attachments, folder, replied"
    results = @db.execute(
      "SELECT #{light_cols} FROM messages WHERE folder = ? ORDER BY timestamp DESC LIMIT ?",
      @current_folder, @load_limit
    )
    @filtered_messages = results
  elsif @current_view == 'A'
    @filtered_messages = @db.get_messages({}, @load_limit, 0, light: true)
  elsif @current_view == 'N'
    @filtered_messages = @db.get_messages({ read: false }, @load_limit, 0, light: true)
  elsif @views[@current_view]
    view = @views[@current_view]
    apply_view_filters_with_limit(view, @load_limit)
  end

  sort_messages
  new_count = @filtered_messages.size
  return if new_count <= old_count

  # In threaded mode, set pending restore so the threaded rebuild finds our position
  if @show_threaded && cur_id
    @pending_restore_id = cur_id
  end

  # Force threaded view to rebuild organizer with new messages
  if @show_threaded
    organize_current_messages(true)
  end

  set_feedback("Loaded #{new_count} messages (+#{new_count - old_count})", 156, 2)
  render_message_list
  render_top_bar
end

#load_source_colors ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 1697

def load_source_colors
  # Load all source colors into cache
  @source_colors = {}
  sources = @db.get_sources(false)
  
  sources.each do |source|
    @source_colors[source['id']] = source['color'] if source['color']
  end
end

#load_views ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 8095

def load_views
  # Seed views from heathrowrc (INSERT OR IGNORE, won't overwrite user edits)
  @config.custom_views.each do |cv|
    now = Time.now.to_i
    filters_json = cv[:filters].is_a?(String) ? cv[:filters] : cv[:filters].to_json
    @db.execute(
      "INSERT OR IGNORE INTO views (name, key_binding, filters, sort_order, created_at, updated_at) VALUES (?, ?, ?, ?, ?, ?)",
      [cv[:name], cv[:key], filters_json, cv[:sort_order], now, now]
    )
  end

  # Load all views from database, keyed by key_binding string
  db_views = @db.get_all_views
  db_views.each do |view|
    key = view['key_binding'] || view['id'].to_s
    @views[key] = {
      id: view['id'],
      name: view['name'],
      filters: view['filters'],
      sort_order: view['sort_order'],
      key_binding: key
    }
  end
end

#mailcap_command(mime_type, file_path) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 3395

def mailcap_command(mime_type, file_path)
  escaped = Shellwords.escape(file_path)
  mailcap_files = [File.expand_path('~/.mailcap'), '/etc/mailcap']
  mailcap_files.each do |mc|
    next unless File.exist?(mc)
    File.foreach(mc) do |line|
      line = line.strip
      next if line.empty? || line.start_with?('#')
      fields = line.split(';').map(&:strip)
      next if fields.size < 2
      next if fields.any? { |f| f.strip == 'copiousoutput' }
      if fields[0].casecmp?(mime_type)
        cmd = fields[1].gsub("'%s'", escaped).gsub('%s', escaped)
        return cmd
      end
    end
  end
  "xdg-open #{escaped}"
end

#mark_all_view_read(force_all: false) ⇒ Object

Mark all messages in the current view as read



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# File 'lib/heathrow/ui/application.rb', line 3512

def mark_all_view_read(force_all: false)
  # In threaded view on a section header: mark just that group (unless force_all)
  if !force_all && @show_threaded && !@display_messages.empty?
    msg = current_message
    group_msgs = find_current_group_messages(msg)
    if group_msgs
      count = mark_messages_read(group_msgs)
      group_name = msg['subject'] || msg['channel_name'] || 'group'
      set_feedback("Marked #{count} in #{group_name} as read", 156, 3)
      render_top_bar
      render_message_list
      return
    end
  end

  # Bulk DB update for All View or folder views (covers all messages, not just loaded subset)
  if @current_view == 'A' && !@current_folder
    rows = @db.mark_all_as_read
  elsif @current_folder
    rows = @db.mark_all_as_read(folder: @current_folder)
  else
    rows = nil
  end

  organized_sections = (@show_threaded && @organizer) ? @organizer.get_organized_view(@sort_order, @sort_inverted) : nil

  if rows
    # Sync maildir flags for all affected messages
    count = rows.size
    rows.each do |row|
      metadata = row['metadata']
      metadata = JSON.parse(metadata) if metadata.is_a?(String)
      next unless metadata.is_a?(Hash) && metadata['maildir_file']
      sync_maildir_flag({'metadata' => metadata, 'id' => row['id']}, 'S', true)
    end
    # Update in-memory message lists
    [@filtered_messages, @display_messages].each do |list|
      next unless list
      list.each { |m| m['is_read'] = 1 if m['id'] && m['is_read'].to_i == 0 }
    end
    if organized_sections
      organized_sections.each do |section|
        next unless section[:messages]
        section[:messages].each { |m| m['is_read'] = 1 if m['is_read'].to_i == 0 }
      end
    end
  else
    # Custom views: mark loaded messages (subset)
    msgs = if @show_threaded && !@display_messages.empty?
             @display_messages
           else
             @filtered_messages
           end
    return if msgs.nil? || msgs.empty?
    count = mark_messages_read(msgs)
    # Also mark messages inside collapsed sections
    if organized_sections
      organized_sections.each do |section|
        next unless section[:messages]
        count += mark_messages_read(section[:messages])
      end
    end
  end

  invalidate_counts
  set_feedback("Marked #{count} messages as read", 156, 3)
  render_top_bar
  render_message_list
end

#mark_browsed_as_read ⇒ Object

Mark all browsed messages as permanently read



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# File 'lib/heathrow/ui/application.rb', line 291

def mark_browsed_as_read
  count = @browsed_message_ids.size
  return if count == 0

  msg_by_id = @filtered_messages.each_with_object({}) { |m, h| h[m['id']] = m }
  @browsed_message_ids.each do |msg_id|
    @db.mark_as_read(msg_id)
    msg = msg_by_id[msg_id]
    msg['is_read'] = 1 if msg
  end

  @browsed_message_ids.clear
  invalidate_counts
  set_feedback("Marked #{count} browsed messages as read", 156, 3)

  # Remove from view if in unread view
  if is_unread_view?
    @filtered_messages.select! { |m| m['is_read'].to_i == 0 }
    @index = 0
    reset_threading
  end

  render_all
end

#mark_current_message_as_read ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 3421

def mark_current_message_as_read
  msg = current_message
  return unless msg
  return if msg['is_header']  # Don't mark headers
  return if msg['is_channel_header'] || msg['is_thread_header']  # Don't mark synthetic headers
  return unless msg['id'] && !msg['id'].to_s.start_with?('header_')
  
  # Only mark as read if currently unread
  if msg['is_read'].to_i == 0
    success = @db.mark_as_read(msg['id'])
    if success
      msg['is_read'] = 1
      sync_maildir_flag(msg, 'S', true)

      # Re-sort if sorting by unread
      if @sort_order == 'unread'
        sort_messages
        # Reset threading to reorganize with new unread counts (preserve collapsed state)
        reset_threading(true)
      end
      
      # Update displays if UI is initialized
      if @panes && @w
        render_top_bar  # Update unread count
        render_message_list  # Update the list to remove background color
      end
    end
  end
end

#mark_message_read(msg) ⇒ Object

Mark a single message as read in DB, in-memory, and on disk



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# File 'lib/heathrow/ui/application.rb', line 253

def mark_message_read(msg)
  return unless msg && msg['id']
  return if msg['is_read'].to_i == 1

  @db.mark_as_read(msg['id'])
  msg['is_read'] = 1
  invalidate_counts
  sync_maildir_flag(msg, 'S', true)

  # Also update any other references to this message in filtered/display lists
  msg_id = msg['id']
  [@filtered_messages, @display_messages].each do |list|
    next unless list
    list.each do |m|
      next unless m && m['id'] == msg_id && m.object_id != msg.object_id
      m['is_read'] = 1
    end
  end
end

#mark_messages_read(msgs) ⇒ Object

Mark a list of messages as read, skipping headers and already-read



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# File 'lib/heathrow/ui/application.rb', line 3584

def mark_messages_read(msgs)
  count = 0
  msgs.each do |msg|
    next if header_message?(msg)
    next if msg['is_read'].to_i == 1
    next unless msg['id']
    @db.mark_as_read(msg['id'])
    msg['is_read'] = 1
    sync_maildir_flag(msg, 'S', true)
    count += 1
  end
  count
end

#message_count ⇒ Object

Get the current message count (threaded or flat view)



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# File 'lib/heathrow/ui/application.rb', line 225

def message_count
  filtered_messages_size
end

#message_has_html?(msg) ⇒ Boolean 



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# File 'lib/heathrow/ui/application.rb', line 3010

def message_has_html?(msg)
  return false unless msg
  (msg['html_content'] && !msg['html_content'].to_s.strip.empty?) ||
    (msg['content'] && msg['content'] =~ /\A\s*<(!DOCTYPE|html|head|body)\b/i)
end

#move_down ⇒ Object

Navigation methods



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# File 'lib/heathrow/ui/application.rb', line 2465

def move_down
  navigate { |n| @index = (@index + 1) % n }
end

#move_up ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 2469

def move_up
  navigate { |n| @index = @index == 0 ? n - 1 : @index - 1 }
end

#navigate {|msg_count| ... } ⇒ Object

Shared navigation: update index, then re-render

Yields:

  • (msg_count) 


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# File 'lib/heathrow/ui/application.rb', line 2309

def navigate
  clear_inline_image if @showing_image
  @panes[:right].content_update = true
  msg_count = message_count
  return if msg_count == 0
  # Flush read mark for the message we're LEAVING before changing index
  flush_pending_read
  yield msg_count
  # Auto-load more when near the end (95% threshold)
  check_load_more
  # Track the message we just arrived at
  track_browsed_message
  render_message_list
  render_top_bar
  render_message_content
  render_bottom_bar
end

#notmuch_search ⇒ Object

Notmuch full-text search



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# File 'lib/heathrow/ui/application.rb', line 4974

def notmuch_search
  require_relative '../notmuch'
  has_notmuch = Heathrow::Notmuch.available?

  # Source picker: let user scope the search
  sources = @db.get_sources(true)  # enabled only
  scope_hint = sources.each_with_index.map { |s, i| "#{i + 1}:#{s['name']}" }.join(' ')
  scope = bottom_ask("Search in (Enter=all, #{scope_hint}): ", "")
  return if scope == 'ESC'

  selected_source_ids = nil
  scope_label = "all"
  if scope && !scope.strip.empty?
    # Parse source selection (comma-separated numbers or name fragment)
    selected = []
    scope.split(',').each do |part|
      part = part.strip
      if part =~ /^\d+$/
        idx = part.to_i - 1
        selected << sources[idx] if idx >= 0 && idx < sources.size
      else
        # Name fragment match
        sources.each { |s| selected << s if s['name'].downcase.include?(part.downcase) }
      end
    end
    if selected.any?
      selected_source_ids = selected.map { |s| s['id'] }
      scope_label = selected.map { |s| s['name'] }.join(', ')
    end
  end

  query = bottom_ask("Search#{scope_label != 'all' ? " [#{scope_label}]" : ''}: ", "")
  return if query.nil? || query.strip.empty?

  @panes[:bottom].text = " Searching...".fg(226)
  @panes[:bottom].refresh

  results = []

  # Use notmuch for Maildir sources (fast indexed search)
  if has_notmuch && (selected_source_ids.nil? || sources.any? { |s| selected_source_ids&.include?(s['id']) && s['plugin_type'] == 'maildir' })
    files = Heathrow::Notmuch.search_files(query)
    unless files.empty?
      basenames = files.map { |f| File.basename(f) }
      basenames.each_slice(100) do |batch|
        ph = batch.map { '?' }.join(',')
        sql = "SELECT * FROM messages WHERE external_id IN (#{ph})"
        params = batch.dup
        if selected_source_ids
          sid_ph = selected_source_ids.map { '?' }.join(',')
          sql += " AND source_id IN (#{sid_ph})"
          params += selected_source_ids
        end
        rows = @db.execute(sql, *params)
        rows.each do |row|
          row['recipients'] = JSON.parse(row['recipients']) if row['recipients'].is_a?(String)
          row['metadata'] = JSON.parse(row['metadata']) if row['metadata'].is_a?(String)
          row['labels'] = JSON.parse(row['labels']) if row['labels'].is_a?(String)
          row['attachments'] = JSON.parse(row['attachments']) if row['attachments'].is_a?(String)
        end
        results.concat(rows)
      end
    end
  end

  # DB search for non-Maildir sources (or if notmuch unavailable)
  non_maildir_ids = if selected_source_ids
    selected_source_ids.select { |sid| sources.find { |s| s['id'] == sid && s['plugin_type'] != 'maildir' } }
  else
    sources.select { |s| s['plugin_type'] != 'maildir' }.map { |s| s['id'] }
  end
  if non_maildir_ids.any?
    db_filters = { search: query, source_ids: non_maildir_ids }
    db_results = @db.get_messages(db_filters, 500, 0, light: false)
    results.concat(db_results)
  end

  if results.empty?
    set_feedback("No results for: #{query}", 226, 3)
    return
  end

  # Show results as a temporary view
  @current_view = 'A'
  @in_source_view = false
  @panes[:right].content_update = true
  @current_source_filter = "Search: #{query}#{scope_label != 'all' ? " [#{scope_label}]" : ''}"
  @filtered_messages = results
  sort_messages
  @index = 0
  reset_threading
  set_feedback("#{results.size} results for: #{query}", 156, 0)
  render_all
end

#open_attachments(maildir_file, attachments, indices) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 3325

def open_attachments(maildir_file, attachments, indices)
  mail = load_mail_file(maildir_file)
  return unless mail
  tmpdir = File.join(Dir.tmpdir, 'heathrow-att')
  FileUtils.mkdir_p(tmpdir)
  opened = 0
  indices.each do |i|
    att = attachments[i]
    mail_att = find_mail_attachment(mail, att)
    next unless mail_att
    tmp_path = File.join(tmpdir, mail_att.filename)
    File.open(tmp_path, 'wb') { |f| f.write(mail_att.body.decoded) }
    mime = att['content_type'] || att['mime_type'] || 'application/octet-stream'
    mime = mime.split(';').first.strip
    cmd = mailcap_command(mime, tmp_path)
    pid = Process.spawn(cmd, [:out, :err] => '/dev/null')
    Process.detach(pid)
    opened += 1
  end
  set_feedback("Opened #{opened} attachment#{opened != 1 ? 's' : ''}", 156, 2)
end

#open_folder(folder_name) ⇒ Object

Open a specific folder and show its messages



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# File 'lib/heathrow/ui/application.rb', line 4067

def open_folder(folder_name)
  @in_folder_browser = false
  @in_favorites_browser = false
  @current_folder = folder_name
  @current_view = 'A'
  @in_source_view = false
  @panes[:right].content_update = true
  @current_source_filter = "Folder: #{folder_name}"

  # Reset threading state so old @display_messages don't persist
  reset_threading

  # Show progress while loading
  @panes[:bottom].text = " Loading #{folder_name}...".fg(226)
  @panes[:bottom].refresh

  # Light query with limit (full content loaded lazily when viewing)
  @load_limit = 200
  light_cols = "id, source_id, external_id, thread_id, parent_id, sender, sender_name, recipients, subject, substr(content, 1, 200) as content, timestamp, received_at, read AS is_read, starred AS is_starred, archived, labels, metadata, attachments, folder, replied"
  results = @db.execute(
    "SELECT #{light_cols} FROM messages WHERE folder = ? ORDER BY timestamp DESC LIMIT ?",
    folder_name, @load_limit
  )

  @filtered_messages = results
  sort_messages
  @index = 0
  set_feedback("Folder: #{folder_name} (#{results.size} messages)", 156, 3)
  render_all
end

#open_in_brrowser ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 3187

def open_in_brrowser
  unless system("which brrowser > /dev/null 2>&1")
    set_feedback("brrowser not installed. See https://github.com/isene/brrowser", 196, 4)
    return
  end

  msg = current_message
  return unless msg
  return if header_message?(msg)
  msg = ensure_full_message(msg)

  # Build URL from message (same logic as open_message_external)
  url = nil
  if message_has_html?(msg)
    html = msg['html_content']
    html = msg['content'] if !html || html.to_s.strip.empty?
    tmpfile = "/tmp/heathrow-view-#{msg['id']}.html"
    File.write(tmpfile, html)
    url = "file://#{tmpfile}"
  else
    meta = msg['metadata']
    if meta
      parsed = meta.is_a?(Hash) ? meta : (JSON.parse(meta) rescue {})
      url = parsed['link'] || parsed['url']
    end
    url ||= msg['url'] || msg['link'] || msg['permalink']
    url ||= msg['external_id'] if msg['external_id']&.start_with?('http')
  end

  unless url
    set_feedback("No URL or HTML content to open", 226, 3)
    return
  end

  Rcurses.clear_screen
  system("brrowser '#{url}'")
  setup_display
  create_panes
  render_all
end

#open_in_timely ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 3016

def open_in_timely
  msg = current_message
  return unless msg
  msg = ensure_full_message(msg)

  # Try to find a date from calendar data or message timestamp
  timely_home = File.expand_path('~/.timely')
  return set_feedback("Timely not configured (~/.timely missing)", 196, 3) unless File.directory?(timely_home)

  # Check for ICS attachment or inline calendar data
  date_str = nil
  meta = msg['metadata']
  meta = JSON.parse(meta) if meta.is_a?(String) rescue nil
  file = meta['maildir_file'] if meta.is_a?(Hash)

  if file && File.exist?(file)
    begin
      require 'mail'
      mail = Mail.read(file)
      if mail.multipart?
        mail.parts.each do |part|
          ct = (part.content_type || '').downcase
          if ct.include?('calendar') || ct.include?('ics')
            ics = part.decoded
            vevent = ics[/BEGIN:VEVENT(.*?)END:VEVENT/m, 1]
            if vevent
              vevent = vevent.gsub(/\r?\n[ \t]/, '')
              if vevent =~ /^DTSTART;TZID=[^:]*:(\d{8})/i ||
                 vevent =~ /^DTSTART:(\d{8})/i ||
                 vevent =~ /^DTSTART;VALUE=DATE:(\d{8})/i
                d = $1
                date_str = "#{d[0,4]}-#{d[4,2]}-#{d[6,2]}"
              end
            end
            break
          end
        end
      end
    rescue => e
      # Fall through to timestamp
    end
  end

  # Fallback: use message timestamp
  unless date_str
    ts = msg['timestamp'].to_i
    date_str = Time.at(ts).strftime('%Y-%m-%d') if ts > 0
  end

  return set_feedback("Could not determine date for Timely", 245, 2) unless date_str

  # Write goto file for Timely
  File.write(File.join(timely_home, 'goto'), date_str)

  # Also copy ICS to incoming if it has calendar data
  if file && File.exist?(file)
    begin
      incoming = File.join(timely_home, 'incoming')
      FileUtils.mkdir_p(incoming)
      require 'mail'
      mail = Mail.read(file)
      mail.parts.each do |part|
        ct = (part.content_type || '').downcase
        if ct.include?('calendar') || ct.include?('ics')
          ics_file = File.join(incoming, "heathrow_#{msg['id']}.ics")
          File.write(ics_file, part.decoded) unless File.exist?(ics_file)
          break
        end
      end
    rescue => e
      # Non-fatal
    end
  end

  set_feedback("Sent to Timely: #{date_str}", 156, 0)
end

#open_message ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 2995

def open_message
  msg = current_message
  return unless msg
  
  # Mark as read
  if msg['is_read'] == 0 || !msg['is_read']
    @db.mark_as_read(msg['id'])
    msg['is_read'] = 1
    render_message_list
  end
  
  # Show full content in right pane
  render_message_content
end

#open_message_external ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 3093

def open_message_external
  msg = current_message
  return unless msg
  return if header_message?(msg)
  msg = ensure_full_message(msg)

  # Mark as read
  if msg['is_read'].to_i == 0
    @db.mark_as_read(msg['id'])
    msg['is_read'] = 1
    render_message_list
  end

  # For messages with HTML content, open directly in browser
  if message_has_html?(msg)
    html = msg['html_content']
    html = msg['content'] if !html || html.to_s.strip.empty?
    tmpfile = "/tmp/heathrow-view-#{msg['id']}.html"
    File.write(tmpfile, html)
    system("xdg-open '#{tmpfile}' 2>/dev/null &")
    set_feedback("Opened HTML in browser", 156, 3)
    return
  end

  url = nil

  # Determine URL based on source type
  case msg['source_type']
  when 'discord'
    if msg['external_id'] && msg['external_id'].start_with?('discord_')
      parts = msg['external_id'].split('_')
      if parts.length >= 3
        channel_id = parts[1]
        message_id = parts[2]
        guild_id = nil
        if msg['raw_data']
          begin
            raw = JSON.parse(msg['raw_data'])
            guild_id = raw['guild_id']
          rescue; end
        end
        if guild_id
          url = "https://discord.com/channels/#{guild_id}/#{channel_id}/#{message_id}"
        else
          url = "https://discord.com/channels/@me/#{channel_id}/#{message_id}"
        end
      end
    end
  when 'slack'
    if msg['workspace'] && msg['channel_id'] && msg['timestamp']
      url = "https://#{msg['workspace']}.slack.com/archives/#{msg['channel_id']}/p#{msg['timestamp'].gsub('.', '')}"
    end
  when 'reddit'
    if msg['permalink']
      url = "https://reddit.com#{msg['permalink']}"
    elsif msg['url'] && msg['url'].start_with?('http')
      url = msg['url']
    end
  when 'rss', 'hacker_news'
    # Check metadata (where RSS link is stored)
    meta = msg['metadata']
    if meta
      begin
        parsed = meta.is_a?(Hash) ? meta : JSON.parse(meta)
        url = parsed['link'] || parsed['url']
      rescue; end
    end
    # Fallback to raw_data, then external_id
    if !url && msg['raw_data']
      begin
        raw = JSON.parse(msg['raw_data'])
        url = raw['link'] || raw['url']
      rescue; end
    end
    url ||= msg['external_id'] if msg['external_id'] && msg['external_id'].start_with?('http')
  when 'telegram'
    url = msg['link'] if msg['link']
  when 'whatsapp'
    if msg['sender'] && msg['sender'].match?(/^\+?\d+$/)
      url = "https://wa.me/#{msg['sender'].gsub(/[^\d]/, '')}"
    end
  end

  # Fallback to any URL field in the message
  url ||= msg['url'] || msg['link'] || msg['permalink']

  if url
    system("xdg-open '#{url}' 2>/dev/null &")
    set_feedback("Opened in browser: #{url[0..50]}...", 156, 3)
  else
    set_feedback("No HTML or URL available for this message", 226, 3)
  end
end

#page_down ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 2473

def page_down
  navigate { |n| @index = [@index + @panes[:left].h - 2, n - 1].min }
end

#page_up ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 2477

def page_up
  navigate { |n| @index = [@index - (@panes[:left].h - 2), 0].max }
end

#parse_color_value(val) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 1707

def parse_color_value(val)
  return nil unless val
  val = val.to_s
  return val.to_i if val =~ /^\d+$/
  return val if val =~ /^[0-9a-fA-F]{6}$/
  nil
end

#parse_ics_basic(ics) ⇒ Object

Basic ICS parsing fallback (when VcalView is not available)



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# File 'lib/heathrow/ui/application.rb', line 8473

def parse_ics_basic(ics)
  # Extract only the VEVENT section (ignore VTIMEZONE which has dummy dates)
  vevent = ics[/BEGIN:VEVENT(.*?)END:VEVENT/m, 1]
  return nil unless vevent

  # Unfold continuation lines (RFC 5545: lines starting with space are continuations)
  vevent = vevent.gsub(/\r?\n[ \t]/, '')

  event = {}

  # SUMMARY (strip LANGUAGE= and other params before the colon-value)
  if vevent =~ /^SUMMARY[^:]*:(.*)$/i
    event[:summary] = $1.strip
  end

  # DTSTART with TZID
  if vevent =~ /^DTSTART;TZID=[^:]*:(\d{8})T?(\d{4,6})?/i
    d = $1; t = $2
    event[:dates] = "#{d[0,4]}-#{d[4,2]}-#{d[6,2]}"
    event[:times] = t ? "#{t[0,2]}:#{t[2,2]}" : "All day"
    begin
      dobj = Time.parse(event[:dates])
      event[:weekday] = dobj.strftime('%A')
    rescue; end
  elsif vevent =~ /^DTSTART;VALUE=DATE:(\d{8})/i
    d = $1
    event[:dates] = "#{d[0,4]}-#{d[4,2]}-#{d[6,2]}"
    event[:times] = "All day"
  elsif vevent =~ /^DTSTART:(\d{8})T?(\d{4,6})?(Z)?/i
    d = $1; t = $2; utc = $3
    event[:dates] = "#{d[0,4]}-#{d[4,2]}-#{d[6,2]}"
    if t
      # Convert UTC times to local
      if utc
        utc_time = Time.utc(d[0,4].to_i, d[4,2].to_i, d[6,2].to_i, t[0,2].to_i, t[2,2].to_i)
        local = utc_time.localtime
        event[:dates] = local.strftime('%Y-%m-%d')
        event[:times] = local.strftime('%H:%M')
        event[:weekday] = local.strftime('%A')
      else
        event[:times] = "#{t[0,2]}:#{t[2,2]}"
        begin
          event[:weekday] = Time.parse(event[:dates]).strftime('%A')
        rescue; end
      end
    else
      event[:times] = "All day"
    end
  end

  # DTEND
  if vevent =~ /^DTEND;TZID=[^:]*:(\d{8})T?(\d{4,6})?/i
    d = $1; t = $2
    end_date = "#{d[0,4]}-#{d[4,2]}-#{d[6,2]}"
    end_time = t ? "#{t[0,2]}:#{t[2,2]}" : nil
  elsif vevent =~ /^DTEND:(\d{8})T?(\d{4,6})?(Z)?/i
    d = $1; t = $2; utc = $3
    if t && utc
      utc_time = Time.utc(d[0,4].to_i, d[4,2].to_i, d[6,2].to_i, t[0,2].to_i, t[2,2].to_i)
      local = utc_time.localtime
      end_date = local.strftime('%Y-%m-%d')
      end_time = local.strftime('%H:%M')
    else
      end_date = "#{d[0,4]}-#{d[4,2]}-#{d[6,2]}"
      end_time = t ? "#{t[0,2]}:#{t[2,2]}" : nil
    end
    event[:dates] += " - #{end_date}" if end_date && end_date != event[:dates]
    event[:times] += " - #{end_time}" if end_time && end_time != event[:times]
  end

  # LOCATION (strip params)
  if vevent =~ /^LOCATION[^:]*:(.*)$/i
    event[:location] = $1.strip
  end

  # ORGANIZER
  if vevent =~ /^ORGANIZER.*CN=([^;:]+)/i
    event[:organizer] = $1.strip
  elsif vevent =~ /^ORGANIZER.*MAILTO:(.+)$/i
    event[:organizer] = $1.strip
  end

  # ATTENDEES
  attendees = vevent.scan(/^ATTENDEE.*CN=([^;:]+)/i).flatten
  if attendees.any?
    event[:participants] = attendees.map { |a| "   #{a.strip}" }.join("\n")
  end

  # STATUS
  event[:status] = $1.strip.capitalize if vevent =~ /^STATUS:(.*)$/i

  event.empty? ? nil : event
end

#parse_interval(str) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 7456

def parse_interval(str)
  return nil if str.nil? || str.empty?
  case str.strip
  when /^(\d+)s$/i then $1.to_i
  when /^(\d+)m$/i then $1.to_i * 60
  when /^(\d+)h$/i then $1.to_i * 3600
  when /^(\d+)$/   then $1.to_i  # Raw seconds
  else nil
  end
end

#parse_timestamp(ts, format = @date_format) ⇒ Object

Helper method to parse timestamps (handles both Unix timestamps and date strings)



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# File 'lib/heathrow/ui/application.rb', line 350

def parse_timestamp(ts, format = @date_format)
  return nil if ts.nil? || ts.to_s.empty? || ts.to_s == "0"

  if ts.is_a?(Integer) || ts.to_s.match?(/^\d+$/)
    # Unix timestamp - use Time.at
    Time.at(ts.to_i).strftime(format)
  else
    # Date string - use Time.parse
    Time.parse(ts.to_s).strftime(format)
  end
rescue => e
  nil
end

#pick_from_list(names, title: "SELECT", prompt: "j/k navigate, Enter select, ESC cancel") ⇒ Object

Generic picker: shows a list in the right pane with → cursor. Returns selected index or nil on cancel.



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# File 'lib/heathrow/ui/application.rb', line 1036

def pick_from_list(names, title: "SELECT", prompt: "j/k navigate, Enter select, ESC cancel")
  idx = 0

  render_pick = -> {
    lines = [title.bd.fg(226), ""]
    names.each_with_index do |name, i|
      if i == idx
        lines << "→ #{name}".bd.fg(226)
      else
        lines << "  #{name}".fg(252)
      end
    end
    lines << ""
    lines << prompt.fg(245)
    @panes[:right].text = lines.join("\n")
    @panes[:right].refresh
  }

  render_pick.call
  loop do
    chr = getchr
    case chr
    when 'j', 'DOWN', 'S-DOWN'
      idx = (idx + 1) % names.size
      render_pick.call
    when 'k', 'UP', 'S-UP'
      idx = (idx - 1) % names.size
      render_pick.call
    when 'ENTER', "\r", "\n"
      return idx
    when 'ESC', "\e", 'q'
      return nil
    end
  end
end

#pick_source_color ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 7179

def pick_source_color
  return unless @in_source_view && @filtered_messages[@index]
  source_id = @filtered_messages[@index]['id']
  source = @source_manager.sources[source_id]
  return unless source

  # Build a 256-color grid in the right pane
  lines = []
  lines << "COLOR PICKER for #{source['name']}".bd.fg(226)
  lines << "=" * 40
  lines << ""
  lines << "Enter color number (0-255) or RGB hex (e.g. ff8800):"
  lines << ""

  # Show standard colors 0-15
  row = ""
  (0..15).each do |c|
    row += " #{c.to_s.rjust(3)}".fg(c > 6 && c < 10 || c == 0 ? 255 : 0).bg(c)
  end
  lines << row

  lines << ""

  # Show 216-color cube (16-231) in 6 rows of 36
  (0..5).each do |g|
    row = ""
    (0..35).each do |i|
      c = 16 + g * 36 + i
      fg = (g < 3 && i < 18) ? 255 : 0
      row += "#{c.to_s.rjust(4)}".fg(fg).bg(c)
    end
    lines << row
  end

  lines << ""

  # Grayscale 232-255
  row = ""
  (232..255).each do |c|
    fg = c < 244 ? 255 : 0
    row += "#{c.to_s.rjust(4)}".fg(fg).bg(c)
  end
  lines << row
  lines << ""

  current = source['color']
  lines << "Current: #{current || 'auto'}".fg(245)

  @panes[:right].text = lines.join("\n")
  @panes[:right].refresh

  # Get input
  @panes[:bottom].prompt = "Color: "
  @panes[:bottom].text = current.to_s
  @editing = true
  @panes[:bottom].editline
  @editing = false
  input = @panes[:bottom].text.strip

  if input.empty?
    # Clear custom color
    @db.execute("UPDATE sources SET color = NULL WHERE id = ?", source_id)
    @source_colors.delete(source_id)
    set_feedback("Color reset to auto", 40, 2)
  elsif input =~ /^\d+$/ && input.to_i >= 0 && input.to_i <= 255
    @db.execute("UPDATE sources SET color = ? WHERE id = ?", input, source_id)
    @source_colors[source_id] = input.to_i
    set_feedback("Color set to #{input}", input.to_i, 2)
  elsif input =~ /^[0-9a-fA-F]{6}$/
    @db.execute("UPDATE sources SET color = ? WHERE id = ?", input, source_id)
    @source_colors[source_id] = input
    set_feedback("Color set to ##{input}", 40, 2)
  else
    set_feedback("Invalid color. Use 0-255 or 6-digit hex.", 196, 2)
  end

  # Update the pseudo-message in @filtered_messages so left pane reflects new color
  if @filtered_messages
    src_msg = @filtered_messages.find { |m| m['id'] == source_id }
    src_msg['source_color'] = @source_colors[source_id] if src_msg
  end

  # Refresh source manager cache and redraw
  @source_manager.reload
  render_all
end

#popup_add_maildir ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 7824

def popup_add_maildir
  path = bottom_ask("Maildir path: ", File.join(Dir.home, 'Maildir'))
  return unless path && !path.strip.empty?
  path = File.expand_path(path.strip)

  unless Dir.exist?(path)
    set_feedback("Directory not found: #{path}", 196, 4)
    return
  end

  config = { 'maildir_path' => path }
  @db.add_source('Local Maildir', 'maildir', config, ['read', 'send'], true)
  @db.execute("UPDATE sources SET poll_interval = 30 WHERE name = 'Local Maildir'")

  set_feedback("Maildir source added! Syncing...", 156, 3)

  # Do initial sync
  require_relative '../sources/maildir'
  source = @db.get_source_by_name('Local Maildir')
  if source
    instance = Heathrow::Sources::Maildir.new(source)
    @panes[:bottom].text = " Syncing Maildir (this may take a moment for large collections)...".fg(226)
    @panes[:bottom].refresh
    instance.sync_all(@db, source['id'])
    count = @db.db.get_first_value("SELECT COUNT(*) FROM messages WHERE source_id = ?", [source['id']]) rescue 0
    set_feedback("Synced #{count} messages from Maildir", 156, 5)
  end
end

#popup_add_rss ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 7853

def popup_add_rss
  url = bottom_ask("RSS/Atom feed URL: ", '')
  return unless url && !url.strip.empty?
  url = url.strip

  title = bottom_ask("Feed name (Enter for auto): ", '')
  title = nil if title && title.strip.empty?

  config = { 'feeds' => [{ 'url' => url, 'title' => title }] }
  @db.add_source('RSS Feeds', 'rss', config, ['read'], true)
  set_feedback("RSS source added! Add more feeds via 'S' > RSS > 'a'", 156, 5)
end

#popup_add_weechat ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 7866

def popup_add_weechat
  host = bottom_ask("WeeChat relay host: ", 'localhost')
  return unless host && !host.strip.empty?
  port = bottom_ask("Relay port: ", '8001')
  password = bottom_ask("Relay password: ", '')

  config = {
    'host' => host.strip,
    'port' => port.strip.to_i,
    'password' => password
  }
  @db.add_source('WeeChat', 'weechat', config, ['read', 'send'], true)
  set_feedback("WeeChat source added!", 156, 5)
end

#postpone_message(source, composed) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 5799

def postpone_message(source, composed)
  data = {
    from: composed[:from],
    to: composed[:to],
    cc: composed[:cc],
    bcc: composed[:bcc],
    reply_to: composed[:reply_to],
    subject: composed[:subject],
    body: composed[:body],
    extra_headers: composed[:extra_headers],
    attachments: composed[:attachments],
    original_message_id: composed[:original_message]&.[]('id')
  }
  @db.save_postponed(source['id'], data)
  set_feedback("Message postponed", 156, 3)
end

#prompt_attachments(attachments = [], composed: nil) ⇒ Object

Prompt user to attach files after composing an email. Returns array of file paths, or nil if cancelled (ESC).



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# File 'lib/heathrow/ui/application.rb', line 5591

def prompt_attachments(attachments = [], composed: nil)
  # Show who the message is going to
  to_info = ""
  if composed && composed[:to]
    to_info = " To: #{composed[:to]}"
    to_info += ", Cc: #{composed[:cc]}" if composed[:cc] && !composed[:cc].empty?
  end

  loop do
    # Ensure terminal is in raw mode with cursor hidden (safety after external tools)
    Cursor.hide

    # Show attachments and recipients in right pane
    right_lines = []
    if composed
      right_lines << "To: #{composed[:to]}".fg(theme[:accent]) if composed[:to]
      right_lines << "Cc: #{composed[:cc]}".fg(theme[:accent]) if composed[:cc] && !composed[:cc].to_s.empty?
      right_lines << "Subject: #{composed[:subject]}".fg(theme[:accent]) if composed[:subject]
      right_lines << ""
    end
    if attachments.empty?
      right_lines << "No attachments"
    else
      total_size = attachments.sum { |f| File.size(f) rescue 0 }
      size_str = total_size < 1_000_000 ? "#{(total_size / 1024.0).round(1)}KB" : "#{(total_size / 1_000_000.0).round(1)}MB"
      right_lines << "Attachments (#{attachments.size}, #{size_str}):".bd
      attachments.each_with_index do |f, i|
        fsize = File.size(f) rescue 0
        fs = fsize < 1_000_000 ? "#{(fsize / 1024.0).round(1)}KB" : "#{(fsize / 1_000_000.0).round(1)}MB"
        right_lines << "  #{i + 1}. #{File.basename(f)} (#{fs})"
      end
    end
    @panes[:right].text = right_lines.join("\n")
    @panes[:right].refresh

    # Build prompt with compose plugin keys
    plugins = compose_plugins
    plugin_hint = plugins.map { |p| "#{p[:label]} (#{p[:key]})" }.join(" | ")
    plugin_hint = " | #{plugin_hint}" unless plugin_hint.empty?

    if attachments.empty?
      prompt = " Send (ENTER) | Edit (e) | Attach (a)#{plugin_hint} | Postpone (p) | Cancel (ESC)"
    else
      prompt = " Send (ENTER) | Edit (e) | More (a)#{plugin_hint} | Remove (x) | Postpone (p) | ESC"
    end

    @panes[:bottom].text = prompt.fg(226)
    @panes[:bottom].refresh

    chr = getchr
    case chr
    when 'ENTER'
      return attachments
    when 'ESC'
      return nil
    when 'p'
      return :postpone
    when 'e'
      composed[:attachments] = attachments.dup unless attachments.empty?
      return :edit
    when 'a', 'A'
      new_files = run_rtfm_picker
      attachments.concat(new_files) if new_files && !new_files.empty?
    when 'x', 'X'
      if attachments.size == 1
        attachments.clear
      elsif attachments.size > 1
        @panes[:bottom].text = " Remove which? (1-#{attachments.size}, or 'a' for all): ".fg(226)
        @panes[:bottom].refresh
        ans = getchr
        if ans == 'a' || ans == 'A'
          attachments.clear
        elsif ans =~ /^\d$/ && (idx = ans.to_i) >= 1 && idx <= attachments.size
          attachments.delete_at(idx - 1)
        end
      end
    else
      # Check compose plugins
      plugin = plugins.find { |p| p[:key] == chr }
      if plugin
        new_files = run_compose_plugin(plugin)
        attachments.concat(new_files) if new_files && !new_files.empty?
      end
    end
  end
end

#purge_deleted ⇒ Object

Purge all delete-marked messages (like mutt '$' / sync-mailbox)



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# File 'lib/heathrow/ui/application.rb', line 5105

def purge_deleted
  @delete_marked ||= Set.new
  count = @delete_marked.size
  if count == 0
    set_feedback("No messages marked for deletion", 226, 2)
    return
  end

  if @confirm_purge
    confirm = bottom_ask("Purge #{count} message#{count > 1 ? 's' : ''}? ENTER to confirm, ESC to cancel: ", '')
    if confirm.nil?
      set_feedback("Purge cancelled", 245, 2)
      return
    end
  end

  # Find messages in both filtered and display lists
  all_msgs = (@filtered_messages + (@display_messages || [])).uniq { |m| m['id'] }

  @delete_marked.each do |msg_id|
    msg = all_msgs.find { |m| m['id'] == msg_id }
    if msg
      # Delete the Maildir file (like mutt) so it doesn't reappear on sync
      delete_maildir_file(msg)
      @db.execute("DELETE FROM messages WHERE id = ?", msg_id)
    end
  end

  # Find the message just above the first deleted one (by ID, survives reindexing)
  display = @display_messages || @filtered_messages
  first_deleted_idx = display.each_with_index.find { |m, _| @delete_marked.include?(m['id']) }&.last
  target_msg_id = nil
  if first_deleted_idx && first_deleted_idx > 0
    # Walk backwards to find first non-deleted message above
    (first_deleted_idx - 1).downto(0) do |i|
      unless @delete_marked.include?(display[i]['id'])
        target_msg_id = display[i]['id']
        break
      end
    end
  end

  # Remove from current view
  @filtered_messages.reject! { |m| @delete_marked.include?(m['id']) }
  purged_ids = @delete_marked.dup
  @delete_marked.clear

  # Force threaded view to rebuild with purged messages gone
  reset_threading(true)

  # Position cursor on the message above the first deleted one
  new_display = @display_messages || @filtered_messages
  if target_msg_id
    found = new_display.index { |m| m['id'] == target_msg_id }
    @index = found || 0
  else
    @index = 0
  end
  @index = [new_display.size - 1, 0].max if @index >= new_display.size

  set_feedback("Purged #{count} messages", 156, 2)
  render_all
end

#purge_item_messages(source_id, source_type, item) ⇒ Object

Remove messages belonging to a deleted feed/page



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# File 'lib/heathrow/ui/application.rb', line 1196

def purge_item_messages(source_id, source_type, item)
  name = item['title'] || item['url'] || item['name']
  case source_type
  when 'rss'
    # RSS messages have feed_title in metadata
    @db.execute("DELETE FROM messages WHERE source_id = ? AND json_extract(metadata, '$.feed_title') = ?",
                [source_id, name])
  when 'web'
    @db.execute("DELETE FROM messages WHERE source_id = ? AND json_extract(metadata, '$.page_title') = ?",
                [source_id, name])
  end
  @db.execute("SELECT changes() as cnt")[0]['cnt']
end

#quit ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 8120

def quit
  @config.save
  @running = false
end

#recall_postponed(source) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 5816

def recall_postponed(source)
  count = @db.postponed_count
  return nil if count == 0

  drafts = @db.list_postponed
  if count == 1
    draft = drafts.first
    data = JSON.parse(draft['data'])
    @db.delete_postponed(draft['id'])
    return data
  end

  # Multiple drafts: show picker
  rows, cols = IO.console.winsize
  pw = [cols - 20, 60].min
  ph = [count + 5, rows - 10].min
  px = (cols - pw) / 2
  py = (rows - ph) / 2

  popup = Rcurses::Pane.new(px, py, pw, ph, 252, 0)
  popup.border = true
  popup.scroll = false
  sel = 0

  build = -> {
    popup.full_refresh
    lines = ["", "  " + "Postponed Messages".bd.fg(theme[:accent])]
    lines << "  " + "\u2500" * [pw - 6, 1].max
    drafts.each_with_index do |d, i|
      data = JSON.parse(d['data']) rescue {}
      date = Time.at(d['created_at']).strftime('%b %d %H:%M')
      subj = data['subject'] || '(no subject)'
      to = data['to'] || ''
      entry = "  #{date}  #{to.to_s[0..15].ljust(16)}  #{subj}"
      entry = entry[0..pw-6]
      lines << (i == sel ? entry.fg(theme[:accent]) : entry)
    end
    lines << ""
    lines << "  " + "ENTER:recall  d:delete  ESC:cancel".fg(245)
    popup.text = lines.join("\n")
    popup.refresh
  }

  build.call
  loop do
    k = getchr
    case k
    when 'ESC', 'q'
      render_all
      return nil
    when 'k', 'UP'
      sel = (sel - 1) % count
      build.call
    when 'j', 'DOWN'
      sel = (sel + 1) % count
      build.call
    when 'd'
      @db.delete_postponed(drafts[sel]['id'])
      drafts.delete_at(sel)
      count -= 1
      if count == 0
        render_all
        set_feedback("All postponed messages deleted", 245, 2)
        return nil
      end
      sel = [sel, count - 1].min
      build.call
    when 'ENTER'
      draft = drafts[sel]
      data = JSON.parse(draft['data'])
      @db.delete_postponed(draft['id'])
      render_all
      return data
    end
  end
end

#redraw_panes ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 8087

def redraw_panes
  require 'io/console'
  @h, @w = IO.console.winsize
  Rcurses.clear_screen
  create_panes
  render_all
end

#refresh_all ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 8067

def refresh_all
  set_feedback("Syncing all sources...", 226, 30)
  @needs_redraw = true

  Thread.new do
    thread_db = Heathrow::Database.new
    sync_maildir(folder: current_view_folder, db: thread_db)
    sync_rss(db: thread_db)
    sync_webwatch(db: thread_db)
    sync_messenger(db: thread_db)
    sync_instagram(db: thread_db)
    sync_weechat(db: thread_db)
    thread_db.close rescue nil
    @pending_view_refresh = true
    set_feedback("Synced all", 46, 2)
  rescue => e
    set_feedback("Refresh error: #{e.message}", 196, 3)
  end
end

#refresh_current_view ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 7969

def refresh_current_view
  view = @views[@current_view]
  source_type = nil
  if view && view[:filters] && view[:filters]['rules'].is_a?(Array)
    rule = view[:filters]['rules'].find { |r| r['field'] == 'source_type' && r['op'] == '=' }
    source_type = rule['value'] if rule
    # Also check source_id rules to determine source type
    if !source_type
      sid_rule = view[:filters]['rules'].find { |r| r['field'] == 'source_id' && r['op'] == '=' }
      if sid_rule
        src = @db.get_source_by_id(sid_rule['value'].to_i)
        source_type = src['plugin_type'] if src
      end
    end
  end
  folder = current_view_folder

  set_feedback("Syncing #{source_type || 'view'}...", 226, 30)
  @needs_redraw = true

  # Extract thread info BEFORE spawning thread (current_message depends on UI state)
  cur_msg = current_message
  cur_meta = cur_msg && cur_msg['metadata']
  cur_meta = JSON.parse(cur_meta) if cur_meta.is_a?(String) rescue nil
  cur_thread_id = cur_meta['thread_id'] if cur_meta.is_a?(Hash)
  # For thread headers, look for thread_id in section messages
  if !cur_thread_id && cur_msg && cur_msg['section_messages']
    first_msg = cur_msg['section_messages'].first
    if first_msg
      fm = first_msg['metadata']
      fm = JSON.parse(fm) if fm.is_a?(String) rescue nil
      cur_thread_id = fm['thread_id'] if fm.is_a?(Hash)
    end
  end
  cur_thread_name = cur_msg['subject'] if cur_msg
  File.open('/tmp/heathrow_sync_debug.log', 'w') { |f|
    f.puts "source_type=#{source_type}"
    f.puts "cur_msg_id=#{cur_msg&.[]('id')}"
    f.puts "cur_msg_keys=#{cur_msg&.keys}"
    f.puts "cur_meta_class=#{cur_meta.class}"
    f.puts "cur_meta=#{cur_meta.inspect}"
    f.puts "cur_thread_id=#{cur_thread_id}"
    f.puts "cur_thread_name=#{cur_thread_name}"
    f.puts "is_header=#{cur_msg&.[]('is_header')}"
    f.puts "section_messages=#{cur_msg&.[]('section_messages')&.length}"
  }

  Thread.new do
    thread_db = Heathrow::Database.new

    case source_type
    when 'maildir'   then sync_maildir(folder: folder, db: thread_db)
    when 'rss'       then sync_rss(db: thread_db)
    when 'web'       then sync_webwatch(db: thread_db)
    when 'messenger'
      if cur_thread_id && cur_thread_name
        require_relative '../sources/messenger'
        src = thread_db.get_sources.find { |s| s['plugin_type'] == 'messenger' }
        if src
          config = src['config']
          config = JSON.parse(config) if config.is_a?(String)
          instance = Heathrow::Sources::Messenger.new(src['name'], config || {}, thread_db)
          count = instance.sync_thread(src['id'], cur_thread_id.to_s, cur_thread_name)
          if instance.sync_error
            @last_sync_errors = (@last_sync_errors || []) << instance.sync_error
          else
            @_thread_sync_count = count
          end
        end
      else
        sync_messenger(db: thread_db)
      end
    when 'instagram' then sync_instagram(db: thread_db)
    when 'weechat'   then sync_weechat(db: thread_db)
    else
      sync_maildir(folder: folder, db: thread_db)
      sync_rss(db: thread_db)
      sync_webwatch(db: thread_db)
      sync_messenger(db: thread_db)
      sync_instagram(db: thread_db)
      sync_weechat(db: thread_db)
    end
    thread_db.close rescue nil
    @pending_view_refresh = true
    if @last_sync_errors && !@last_sync_errors.empty?
      set_feedback("Sync errors: #{@last_sync_errors.join('; ')}", 208, 0)
      @last_sync_errors = nil
    elsif @_thread_sync_count
      set_feedback("Fetched #{@_thread_sync_count} messages from #{cur_thread_name}", @_thread_sync_count > 0 ? 156 : 208, 0)
      @_thread_sync_count = nil
    else
      set_feedback("Synced", 46, 2)
    end
  rescue => e
    set_feedback("Refresh error: #{e.message}", 196, 3)
  end
end

#refresh_messages ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 7955

def refresh_messages
  case @current_view
  when 'A'
    show_all_messages
  when 'N'
    show_new_messages
  when 'S'
    # Don't refresh sources - they're static
    return
  else
    switch_to_view(@current_view)
  end
end

#refresh_panes ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 2292

def refresh_panes
  @panes.each { |_, pane| pane.refresh }
end

#render_all ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 1330

def render_all
  # Organize messages if in threaded view
  if @show_threaded && !@in_source_view && @filtered_messages && !@filtered_messages.empty?
    organize_current_messages
  end

  update_window_title
  render_message_list
  render_top_bar
  # Only re-render right pane if it's not locked by another feature
  if @in_source_view
    render_sources_info
  elsif @panes[:right].content_update
    render_message_content
  end
  render_bottom_bar
end

#render_attachment_list(attachments, idx, tagged) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 3304

def render_attachment_list(attachments, idx, tagged)
  lines = ["Attachments:".bd.fg(226), ""]
  attachments.each_with_index do |att, i|
    name = att['name'] || att['filename'] || 'unnamed'
    size = att['size'] ? " (#{human_size(att['size'])})" : ''
    ctype = att['content_type']&.split(';')&.first || ''
    tag = tagged.include?(i) ? "* ".fg(226) : "  "
    if i == idx
      lines << "→ ".fg(226) + tag + "#{name}#{size}  #{ctype}".bd.fg(255)
    else
      lines << "  " + tag + "#{name}#{size}  #{ctype}".fg(250)
    end
  end
  tagged_hint = tagged.empty? ? "" : "  (#{tagged.size} tagged)"
  lines << ""
  lines << "t:Tag  T:All  o/Enter:Open  s:Save#{tagged_hint}".fg(245)
  @panes[:right].ix = 0
  @panes[:right].text = lines.join("\n")
  @panes[:right].refresh
end

#render_bottom_bar ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 2260

def render_bottom_bar
  # Check if there's an active feedback message (timed or sticky)
  if @feedback_sticky && @feedback_message
    if @panes[:bottom]
      @panes[:bottom].text = " #{@feedback_message}".fg(@feedback_color || 156)
      @panes[:bottom].refresh
    end
    return
  elsif @feedback_expires_at && Time.now < @feedback_expires_at
    if @panes[:bottom]
      @panes[:bottom].text = " #{@feedback_message}".fg(@feedback_color || 156)
      @panes[:bottom].refresh
    end
    return
  elsif @feedback_expires_at && Time.now >= @feedback_expires_at
    @feedback_message = nil
    @feedback_expires_at = nil
  end

  # Check if we should show the filter config message
  if @current_view =~ /^([0-9]|F\d{1,2})$/ && (@views[@current_view].nil? || @views[@current_view][:filters].nil? || @views[@current_view][:filters].empty?)
    @panes[:bottom].text = " View #{@current_view} not configured. Press F to set up filters.".fg(226)
    @panes[:bottom].refresh
    return
  end

  # Show key hints with context
  keys = %w[q:Quit ?:Help A:All N:New 0-9:Views Space:Fold t:Tag T:All s:Save B:Browse F:Fav]
  @panes[:bottom].text = " " + keys.join(" | ").fg(245)
  @panes[:bottom].refresh
end

#render_folder_browser ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 3876

def render_folder_browser
  @browser_favorites ||= get_favorite_folders
  lines = []
  @folder_display.each_with_index do |folder, i|
    indent = "  " * folder[:depth]
    arrow = folder[:has_children] ? (folder[:collapsed] ? "▸ " : "▾ ") : "  "
    star = @browser_favorites.include?(folder[:full_name]) ? "* ".fg(226) : "  "

    if i == @folder_browser_index
      line = "→ ".fg(226) + indent + arrow.fg(226) + star + folder[:name].bd.ul.fg(255)
    else
      line = "  " + indent + arrow.fg(245) + star + folder[:name].fg(245)
    end
    lines << line
  end

  @panes[:left].text = lines.join("\n")

  # Scroll to keep selected item visible
  page_height = @panes[:left].h
  page_height -= 2 if @panes[:left].border
  if @folder_display.size > page_height
    scrolloff = 3
    max_scroll = @folder_display.size - page_height
    if @folder_browser_index - @panes[:left].ix < scrolloff
      @panes[:left].ix = [@folder_browser_index - scrolloff, 0].max
    elsif @panes[:left].ix + page_height - 1 - @folder_browser_index < scrolloff
      @panes[:left].ix = [@folder_browser_index + scrolloff - page_height + 1, max_scroll].min
    end
  else
    @panes[:left].ix = 0
  end

  @panes[:left].refresh

  # Show folder info in right pane (cache counts to avoid slow queries on every keystroke)
  if @folder_display[@folder_browser_index]
    folder = @folder_display[@folder_browser_index]
    @folder_count_cache ||= {}
    counts = @folder_count_cache[folder[:full_name]] ||= folder_message_count(folder[:full_name])
    info = []
    info << "FOLDER: #{folder[:full_name]}".bd.fg(226)
    info << ""
    info << "Messages: #{counts[:total]}".fg(39)
    info << "Unread: #{counts[:unread]}".fg(counts[:unread] > 0 ? 208 : 245)
    info << ""
    info << "Press Enter to open folder".fg(245)
    info << "Press h/l to collapse/expand".fg(245)
    info << "Press ESC/q to return".fg(245)
    @panes[:right].text = info.join("\n")
    @panes[:right].refresh
  end

  # Update top bar (preserve Favorites title if in favorites mode)
  browser_title = @in_favorites_browser ? "Favorites" : "Folder Browser"
  browser_color = @in_favorites_browser ? 226 : 201
  @panes[:top].text = " Heathrow - ".bd.fg(255) + browser_title.bd.fg(browser_color) + " [#{@folder_display.size} folders]".fg(246)
  @panes[:top].refresh

  # Update bottom bar
  @panes[:bottom].text = " j/k:Navigate | Enter:Open | h/l:Collapse/Expand | F:Favorites | +:Add fav | ESC:Back".fg(245)
  @panes[:bottom].refresh
end

#render_folder_browser_left_only ⇒ Object

Fast re-render of just the left pane folder list (no DB queries)



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# File 'lib/heathrow/ui/application.rb', line 3941

def render_folder_browser_left_only
  @browser_favorites ||= get_favorite_folders
  lines = []
  @folder_display.each_with_index do |folder, i|
    indent = "  " * folder[:depth]
    arrow = folder[:has_children] ? (folder[:collapsed] ? "▸ " : "▾ ") : "  "
    star = @browser_favorites.include?(folder[:full_name]) ? "* ".fg(226) : "  "
    if i == @folder_browser_index
      line = "→ ".fg(226) + indent + arrow.fg(226) + star + folder[:name].bd.ul.fg(255)
    else
      line = "  " + indent + arrow.fg(245) + star + folder[:name].fg(245)
    end
    lines << line
  end
  @panes[:left].text = lines.join("\n")
  @panes[:left].refresh
end

#render_header_summary(header_msg) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 2174

def render_header_summary(header_msg)
  # Render a summary view for group headers (channels, threads, etc.)
  lines = []

  # Title
  title = header_msg['subject'] || header_msg['channel_name'] || 'Group'
  lines << title.bd.fg(226)
  lines << ""

  # Message count
  count_text = header_msg['content'] || "0 messages"
  lines << count_text.fg(245)
  lines << ""

  # Unread count if available
  if header_msg['is_channel_header'] && @organizer && @organizer.respond_to?(:get_channel_info)
    begin
      channel_info = @organizer.get_channel_info(header_msg['channel_id'])
      if channel_info && channel_info[:unread_count] && channel_info[:unread_count] > 0
        lines << "#{channel_info[:unread_count]} unread".fg(208)
        lines << ""
      end
    rescue => e
      # Silently ignore if method doesn't work
    end
  elsif header_msg['is_thread_header'] && @organizer && @organizer.respond_to?(:get_thread_info)
    begin
      thread_info = @organizer.get_thread_info(header_msg['thread_id'])
      if thread_info && thread_info[:unread_count] && thread_info[:unread_count] > 0
        lines << "#{thread_info[:unread_count]} unread".fg(208)
        lines << ""
      end
    rescue => e
      # Silently ignore if method doesn't work
    end
  end

  # Hint
  lines << "Press Enter to expand/collapse".fg(240)
  lines << "Press j/k to navigate".fg(240)

  # Display at top of pane (no vertical centering)
  @panes[:right].text = lines.join("\n")
  @panes[:right].refresh
end

#render_message_content ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 1934

def render_message_content
  current_msg = current_message

  # Reset scroll position when switching messages
  if @last_rendered_index != @index
    @panes[:right].ix = 0
    @last_rendered_index = @index
    clear_inline_image
  end

  unless current_msg
    @panes[:right].text = ""
    @panes[:right].refresh
    return
  end

  # Auto-mark as read when content is rendered in the right pane
  mark_current_message_as_read

  msg = current_msg

  # Lazily load full content if this was a light query result
  # Light query uses substr(content,1,200), so reload if content is short or missing
  # Skip for source view (pseudo-messages share IDs with real messages)
  if msg['id'] && !msg['is_header'] && !msg['_full_loaded'] && !@in_source_view
    full = @db.get_message(msg['id'])
    if full
      msg.merge!(full)
      msg['_full_loaded'] = true
    end
  end

  # Special handling for headers (channel headers, thread headers, etc.)
  if header_message?(msg)
    render_header_summary(msg)
    return
  end
  
  # Format message header
  header = []
  
  # Special handling for RSS/HN messages
  if msg['source_type'] == 'rss' || msg['source_type'] == 'hacker_news'
    header << "📰 #{msg['subject']}".bd.fg(226) if msg['subject']
    
    # Extract metadata from raw_data if available
    if msg['raw_data']
      begin
        raw = JSON.parse(msg['raw_data'])
        
        # Add feed title and author
        if raw['feed_title']
          author_info = raw['author'] ? "#{raw['feed_title']} - #{raw['author']}" : raw['feed_title']
          header << "Source: #{author_info}".fg(39)
        elsif raw['author']
          header << "Author: #{raw['author']}".fg(39)
        end
        
        # Add categories/tags
        if raw['categories'] && raw['categories'].is_a?(Array) && !raw['categories'].empty?
          header << "Tags: #{raw['categories'].join(', ')}".fg(245)
        end
        
        # Add link
        if raw['link']
          header << "Link: #{raw['link']}".fg(33)
        end
      rescue => e
        # Fallback to regular display if JSON parsing fails
      end
    end
  else
    # Regular message display
    header << "From: #{msg['sender']}".fg(2) if msg['sender']
    # Show recipients (To field, already parsed by normalize_message_row)
    to = msg['recipients'] || msg['recipient']
    if to
      to_str = to.is_a?(Array) ? to.join(', ') : to.to_s
      header << "To: #{to_str}".fg(2) unless to_str.empty?
    end
    # Show CC recipients (already parsed by normalize_message_row)
    cc = msg['cc']
    if cc
      cc_str = cc.is_a?(Array) ? cc.join(', ') : cc.to_s
      header << "Cc: #{cc_str}".fg(2) unless cc_str.empty?
    end
    # For weechat, show channel name from metadata instead of content preview
    meta = msg['metadata']
    if meta.is_a?(Hash) && meta['channel_name']
      header << "Subject: #{meta['channel_name']}".bd.fg(1)
    elsif msg['subject']
      header << "Subject: #{msg['subject']}".bd.fg(1)
    end
  end
  
  # Parse timestamp using helper method
  date_str = parse_timestamp(msg['timestamp'], '%Y-%m-%d %H:%M:%S') || "Unknown date"

  header << "Date: #{date_str}".fg(240)
  if msg['source_type']
    source_label = case msg['source_type']
    when 'rss' then 'RSS Feed'
    when 'hacker_news' then 'Hacker News'
    else msg['source_type'].capitalize
    end
    header << "Type: #{source_label}".fg(get_source_color(msg))
  end

  # Show labels (if any beyond the folder name, already parsed by normalize_message_row)
  labels = msg['labels']
  labels = [] unless labels.is_a?(Array)
  if labels.size > 0
    # Skip folder name (first label) if it matches the folder
    display_labels = labels.reject { |l| l == msg['folder'] }
    unless display_labels.empty?
      header << "Labels: #{display_labels.join(', ')}".fg(51)
    end
  end
  
  pane_w = @panes[:right].w rescue 80
  header << ("─" * (pane_w - 2)).fg(238)

  # Format message body — prefer HTML rendered via w3m
  render_width = [pane_w - 2, 40].max
  content = nil
  if msg['html_content'] && !msg['html_content'].to_s.strip.empty?
    content = html_to_text(msg['html_content'], render_width)
  end
  content ||= msg['content'] || '(No content)'
  # Detect raw HTML in content (e.g. HTML-only emails imported before html_content existed)
  if content =~ /\A\s*(<(!DOCTYPE|html|head|body)\b)/i
    content = html_to_text(content, render_width) || content
  end

  # For RSS/HN, add extra formatting and info
  if msg['source_type'] == 'rss' || msg['source_type'] == 'hacker_news'
    content_parts = []
    content_parts << "📄 Article Summary:".bd.fg(226)
    content_parts << ""
    
    # Word wrap the content for better readability
    wrapped_lines = []
    content.split("\n").each do |line|
      if line.length > 80
        # Simple word wrapping at 80 characters
        words = line.split(' ')
        current_line = ""
        words.each do |word|
          if current_line.empty?
            current_line = word
          elsif (current_line + " " + word).length <= 80
            current_line += " " + word
          else
            wrapped_lines << current_line
            current_line = word
          end
        end
        wrapped_lines << current_line unless current_line.empty?
      else
        wrapped_lines << line
      end
    end
    
    content_parts.concat(wrapped_lines)
    
    # Add note about full content
    content_parts << ""
    content_parts << "─" * 40
    content_parts << ""
    content_parts << "📌 Note: This is a summary from the RSS feed.".fg(245)
    content_parts << "   Most RSS feeds only provide excerpts, not full articles.".fg(245)
    content_parts << "   Press 'x' to read the complete article in your browser.".fg(156)
    
    # Add helpful instructions
    content_parts << ""
    content_parts << "─" * 40
    content_parts << "💡 Keyboard Shortcuts:".bd.fg(156)
    content_parts << ""
    content_parts << "  x     - Open full article in browser".fg(250)
    content_parts << "  SPACE - Toggle read/unread status".fg(250)
    content_parts << "  s     - Star/unstar this article".fg(250)
    content_parts << "  j/k   - Navigate between messages".fg(250)
    content_parts << "  ENTER - Expand/collapse in left pane".fg(250)
    
    content = content_parts.join("\n")
  end
  
  # Ensure content is UTF-8 compatible (handle emails with various encodings)
  # Create a mutable copy if frozen, then fix encoding
  content = content.dup if content.frozen?

  if content.encoding != Encoding::UTF_8
    content = content.force_encoding('UTF-8').scrub('?')
  elsif !content.valid_encoding?
    content = content.scrub('?')
  end

  # Colorize email content (quote levels + signature)
  content = colorize_email_content(content)

  # Store maildir file path for calendar parser (metadata already parsed by normalize_message_row)
  meta = msg['metadata']
  @_current_render_msg_file = meta['maildir_file'] if meta.is_a?(Hash)

  # Attachment list under header, before body
  att_text = format_attachments(msg['attachments'])

  # Check for images (HTML <img> tags + attachment URLs) and show hint
  image_hint = nil
  img_count = 0
  # Count from attachments
  img_count += image_urls_from_attachments(msg).size
  # Count from HTML
  html = msg['html_content']
  if (!html || html.to_s.strip.empty?) && msg['content'] =~ /\A\s*<(!DOCTYPE|html|head|body)\b/i
    html = msg['content']
  end
  if html && !html.to_s.strip.empty?
    img_count += extract_image_urls(html).select { |u| u.start_with?('http') }.size
  end
  if img_count > 0
    image_hint = "#{img_count} image#{img_count > 1 ? 's' : ''}, press V to view".fg(33)
  end
  html_hint = message_has_html?(msg) ? "HTML mail, press x to open in browser".fg(39) : nil

  # Parse calendar invites (ICS attachments)
  cal_text = format_calendar_event(msg['attachments'])

  full_text = header.join("\n")
  full_text += "\n" + att_text if att_text
  full_text += "\n" + image_hint if image_hint
  full_text += "\n" + html_hint if html_hint
  full_text += "\n\n" + cal_text if cal_text
  full_text += "\n\n" + content
  
  @panes[:right].text = full_text
  @panes[:right].refresh

end

#render_message_list ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 1454

def render_message_list
  # Use threaded view if enabled (never for source view)
  if @show_threaded && @organizer && !@in_source_view
    return render_message_list_threaded
  end
  
  if @filtered_messages.empty?
    # Show empty message in center of pane
    empty_msg = case @current_view
    when 'N'
      "No new messages"
    when /\d/
      "No messages in this view"
    else
      "No messages"
    end

    empty_text = "\n" * (@panes[:left].h / 2 - 1) +
                 empty_msg.center(@panes[:left].w - 2).fg(245)
    @panes[:left].text = empty_text
    @panes[:left].refresh
    return
  end

  # Build ALL messages into one string - let rcurses handle scrolling
  lines = []
  @filtered_messages.each_with_index do |msg, i|
    lines << (@in_source_view ? format_source_line(msg, i == @index) : format_message_line(msg, i == @index))
  end

  # Calculate scroll position
  @panes[:left].scroll = true
  new_text = lines.join("\n")

  page_height = @panes[:left].h
  page_height -= 2 if @panes[:left].border

  old_ix = @panes[:left].ix
  if @filtered_messages.size > page_height
    scrolloff = 3
    max_scroll = @filtered_messages.size - page_height

    if @index - @panes[:left].ix < scrolloff
      @panes[:left].ix = [@index - scrolloff, 0].max
    elsif @panes[:left].ix + page_height - 1 - @index < scrolloff
      @panes[:left].ix = [@index + scrolloff - page_height + 1, max_scroll].min
    end
  else
    @panes[:left].ix = 0
  end

  @panes[:left].text = new_text
  @panes[:left].full_refresh
end

#render_save_folder_picker(idx, title) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 4516

def render_save_folder_picker(idx, title)
  lines = @folder_display.each_with_index.map do |folder, i|
    indent = "  " * folder[:depth]
    arrow = folder[:has_children] ? (folder[:collapsed] ? "▸ " : "▾ ") : "  "
    if i == idx
      "→ ".fg(226) + indent + arrow.fg(226) + folder[:name].bd.ul.fg(255)
    else
      "  " + indent + arrow.fg(245) + folder[:name].fg(245)
    end
  end

  @panes[:left].text = lines.join("\n")
  # Scroll to keep selected item visible
  page_height = @panes[:left].h
  page_height -= 2 if @panes[:left].border
  if @folder_display.size > page_height
    scrolloff = 3
    max_scroll = @folder_display.size - page_height
    if idx - @panes[:left].ix < scrolloff
      @panes[:left].ix = [idx - scrolloff, 0].max
    elsif @panes[:left].ix + page_height - 1 - idx < scrolloff
      @panes[:left].ix = [idx + scrolloff - page_height + 1, max_scroll].min
    end
  else
    @panes[:left].ix = 0
  end
  @panes[:left].refresh

  @panes[:top].text = " Heathrow - ".bd.fg(255) + title.bd.fg(226)
  @panes[:top].refresh
  @panes[:bottom].text = " j/k:Navigate | Enter:Save here | h/l:Collapse/Expand | ESC:Cancel".fg(245)
  @panes[:bottom].refresh
end

#render_sources_info ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 7067

def render_sources_info
  source_text = []
  source_text << "SOURCE MANAGEMENT".bd.fg(226)
  source_text << "=" * 40
  source_text << ""
  
  if @filtered_messages.empty?
    source_text << "No sources configured".fg(245)
    source_text << ""
    source_text << "Press 'a' to add a new source"
    source_text << ""
    source_text << "Available source types:".bd.fg(39)
    types = @source_manager.get_source_types
    types.each do |key, info|
      source_text << "• #{info[:icon]} #{info[:name]}".fg(226)
      source_text << "  #{info[:description]}".fg(245)
    end
  else
    selected = @filtered_messages[@index]
    if selected
      source = @source_manager.sources[selected['id']]
      if source
        source_text << "Selected: #{source['name']}".bd.fg(39)
        source_text << "Type: #{source['plugin_type'] || source['type']}".fg(245)
        source_text << "Status: #{source['enabled'] ? 'Enabled' : 'Disabled'}".fg(source['enabled'] ? 40 : 196)
        interval = (source['poll_interval'] || 900).to_i
        interval_str = if interval <= 0
          "Disabled"
        elsif interval < 60
          "#{interval}s"
        elsif interval < 3600
          "#{interval / 60}m"
        else
          "#{interval / 3600}h#{interval % 3600 > 0 ? " #{(interval % 3600) / 60}m" : ""}"
        end
        source_text << "Poll interval: #{interval_str}".fg(245)
        color_val = source['color']
        if color_val && !color_val.to_s.empty?
          color_num = color_val.to_s =~ /^\d+$/ ? color_val.to_i : color_val.to_s
          source_text << "Color: #{color_val}" + "  ██".fg(color_num)
        else
          auto_color = get_source_color(source)
          source_text << "Color: auto (#{auto_color})" + "  ██".fg(auto_color.to_i)
        end
        # Health status
        health = selected['health_ok'] ? "✓ OK".fg(40) : "✗ #{selected['health_msg']}".fg(196)
        source_text << "Health: #{health}"
        source_text << ""

        config = source['config']
        config = JSON.parse(config) if config.is_a?(String)
        config = {} unless config.is_a?(Hash)
        stype = source['type'] || source['plugin_type']

        if %w[rss web].include?(stype)
          item_name = stype == 'rss' ? 'feed' : 'page'
          items = config[stype == 'rss' ? 'feeds' : 'pages'] || []
          unless items.empty?
            source_text << "#{items.size} #{item_name}s:".bd.fg(245)
            items.each_with_index do |item, i|
              name = item['title'] || item['url'] || item['name'] || "Item #{i}"
              status = item['last_status']
              if status.nil?
                indicator = "  "
              elsif status == 'ok'
                indicator = "✓ ".fg(40)
              else
                indicator = "✗ ".fg(196)
              end
              source_text << "  #{indicator}#{(i+1).to_s.rjust(2)}. #{name}".fg(status == 'ok' ? 252 : (status ? 196 : 245))
              if status && status != 'ok'
                source_text << "      #{status}".fg(88)
              end
            end
            source_text << ""
          end

          # Context-sensitive actions
          source_text << "ACTIONS".bd.fg(226)
          source_text << "-" * 40
          source_text << "a - Add #{item_name}"
          source_text << "d - Remove #{item_name}"
          source_text << "e - Edit source settings"
        else
          # Show config (hide secrets)
          source_text << "Configuration:".bd.fg(39)
          config.each do |key, value|
            next if key.to_s =~ /password|secret|token/
            source_text << "  #{key}: #{value}".fg(245)
          end
          source_text << ""

          # Context-sensitive actions
          source_text << "ACTIONS".bd.fg(226)
          source_text << "-" * 40
          source_text << "a - Add new source"
          source_text << "e - Edit this source"
          source_text << "d - Delete this source"
        end
        source_text << "c - Set color"
        source_text << "p - Set poll interval"
        source_text << "t - Test this source"
        source_text << "SPACE - Enable/disable"
        source_text << "ESC - Back to messages"
      end
    end
  end
  
  @panes[:right].text = source_text.join("\n")
  @panes[:right].refresh
end

#render_top_bar ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 1348

def render_top_bar
  # Ensure we have messages loaded
  @filtered_messages ||= []
  
  # Get current view name and color
  view_name, view_color = case @current_view
  when 'A' 
    if @current_source_filter
      ["Source: #{@current_source_filter}", 39]  # Blue for source filter
    else
      ['All Messages', 226]  # Yellow for all messages
    end
  when 'N' 
    ['New Messages', 40]  # Green for new messages
  when 'S' 
    ['Sources', 201]  # Magenta for sources
  else
    view = @views[@current_view]
    if view
      ["[#{@current_view}] #{view[:name]}", 51]  # Cyan for custom views
    else
      ["View #{@current_view}", 51]
    end
  end
  
  # Get message counts
  if @current_view == 'S'
    # For sources view, show total source count
    total = @filtered_messages.size
    count_text = "#{total} sources"
  else
    # For message views, show unread/total plus starred
    if @cached_unread.nil?
      real_msgs = @filtered_messages.reject { |m| header_message?(m) }
      @cached_unread = real_msgs.count { |m| m['is_read'].to_i == 0 }
      @cached_starred = real_msgs.count { |m| m['is_starred'].to_i == 1 }
      @cached_total = real_msgs.size
    end
    unread = @cached_unread
    starred = @cached_starred
    total = @cached_total
    count_text = "#{unread} unread / #{total} msgs"
    count_text += " / #{starred}*" if starred > 0
  end
  
  # Build colored components
  title_part = " Heathrow - ".fg(248)
  view_part = view_name.bd.fg(255)

  # Add sort order info (only for message views, not Sources)
  sort_part = ""
  if @current_view != 'S'
    sort_text = case @sort_order
               when 'latest' then 'Latest'
               when 'alphabetical' then 'A-Z'
               when 'sender' then 'Sender'
               when 'from' then 'From'
               when 'unread' then 'Unread'
               when 'source' then 'Source'
               else @sort_order.capitalize
               end
    # Add arrow - ↓ for normal order (o key), ↑ for inverted (i key)
    invert_indicator = @sort_inverted ? "↑" : "↓"
    sort_part = " [#{sort_text}#{invert_indicator}]".fg(252)
  end

  # Threading mode indicator
  mode_part = ""
  if @current_view != 'S'
    mode_part = " [#{thread_mode_label}]".fg(245)
  end

  # Position indicator
  pos_text = ""
  if @current_view != 'S' && !@filtered_messages.empty?
    display = @show_threaded ? (@display_messages || @filtered_messages) : @filtered_messages
    pos_text = " [#{@index + 1}/#{display.size}]"
  end

  count_part = " #{count_text}".fg(252)
  pos_part = pos_text.fg(252)

  # Calculate padding
  mode_plain = mode_part.gsub(/\e\[[0-9;]*m/, '')
  plain_length = " Heathrow - ".length + view_name.length + sort_part.gsub(/\e\[[0-9;]*m/, '').length + mode_plain.length + pos_text.length + " #{count_text}".length
  padding = @w - plain_length - 1
  padding = 1 if padding < 1
  spaces = " " * padding

  # Combine with colors - ensure message count is always visible
  full_text = title_part + view_part + sort_part + mode_part + pos_part + spaces + count_part
  
  # Apply per-view top bar background color if set
  view = @views[@current_view]
  custom_bg = view[:filters]['top_bg'] if view && view[:filters].is_a?(Hash)
  top_bg = custom_bg ? parse_color_value(custom_bg) || @topcolor : @topcolor
  if @panes[:top].bg != top_bg
    @panes[:top].bg = top_bg
    @panes[:top].full_refresh
  end

  # Set text and refresh only if changed
  @panes[:top].text = full_text
  @panes[:top].refresh
end

#reply_all_to_message ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 5308

def reply_all_to_message
  msg = current_message
  return unless msg
  msg = ensure_full_message(msg)
  source_id = msg['source_id']
  
  # Check if source supports replying
  source = @db.get_source_by_id(source_id)
  return unless source
  
  require_relative '../message_composer'
  identity = current_identity(msg)
  composer = MessageComposer.new(msg, identity: identity, address_book: @address_book, editor_args: @editor_args)

  # Show composing status
  @panes[:bottom].text = " Opening editor for reply all...".fg(226)
  @panes[:bottom].refresh

  # Compose the reply
  composed = composer.compose_reply(true)

  setup_display
  create_panes
  render_all
  if composed
    finalize_compose(source, composed, "Reply-all cancelled")
  else
    set_feedback("Reply-all cancelled", 245, 1)
  end
end

#reply_to_message(force_editor: false) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 5195

def reply_to_message(force_editor: false)
  msg = current_message
  return unless msg
  msg = ensure_full_message(msg)

  # Don't allow replying to header messages
  if header_message?(msg)
    set_feedback("Cannot reply to section headers. Select a message.", 226, 3)
    render_bottom_bar
    return
  end

  source_id = msg['source_id']
  source = @db.get_source_by_id(source_id)
  return unless source

  source_type = source['plugin_type'] || source['type']

  if CHAT_SOURCE_TYPES.include?(source_type) && !force_editor
    chat_reply_inline(msg, source, source_type)
  elsif CHAT_SOURCE_TYPES.include?(source_type) && force_editor
    chat_reply_editor(msg, source, source_type)
  else
    # Email reply: full editor
    require_relative '../message_composer'
    identity = current_identity(msg)
    composer = MessageComposer.new(msg, identity: identity, address_book: @address_book, editor_args: @editor_args)

    @panes[:bottom].text = " Opening editor for reply...".fg(226)
    @panes[:bottom].refresh

    composed = composer.compose_reply(false)
    setup_display
    create_panes
    render_all
    if composed
      finalize_compose(source, composed, "Reply cancelled")
    else
      set_feedback("Reply cancelled", 245, 1)
    end
  end
end

#run ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 391

def run
  # Check database size BEFORE initializing rcurses
  @total_message_count = @db.get_stats[:total_messages]

  # Show loading info before rcurses takes over the screen
  puts "Loading Heathrow..."
  puts "Database: #{@total_message_count} messages"
  if @total_message_count > 10000
    puts "Large database - loading most recent 1000 messages"
    puts "(Use views to filter, press 'N' for unread)"
    sleep 1
  end

  # EXACTLY LIKE RTFM
  # Initialize rcurses
  Rcurses.init!

  # Clear screen to remove any artifacts
  Rcurses.clear_screen

  # Get terminal size
  setup_display

  # Create panes and show skeleton immediately
  create_panes
  @current_view = @default_view || 'A'
  render_top_bar
  @panes[:left].text = "\n\n" + "  Loading...".fg(245)
  @panes[:left].refresh
  render_bottom_bar

  # First-time onboarding wizard
  if @db.get_sources(false).empty?
    run_onboarding_wizard
  end

  # Load initial view data in background so input loop starts immediately
  @initial_load_done = false
  Thread.new do
    begin
      @load_limit = 200
      case @default_view
      when 'N'
        @filtered_messages = @db.get_messages({is_read: false}, @load_limit, 0, light: true)
      when /^[0-9]$/, /^F\d+$/
        view = @views[@default_view]
        if view && view[:filters] && !view[:filters].empty?
          if view[:filters]['section_order']
            @section_order = view[:filters]['section_order'].dup
          end
          apply_view_filters(view)
        else
          @filtered_messages = @db.get_messages({}, @load_limit, 0, light: true)
          @current_view = 'A'
        end
      else
        @filtered_messages = @db.get_messages({}, @load_limit, 0, light: true)
        @current_view = 'A'
      end
      sort_messages
      @index = 0
      reset_threading
      restore_view_thread_mode
      @initial_load_done = true
      @needs_redraw = true
      # Preload the heavy mail gem so 'v' (attachments) doesn't lag
      require 'mail' rescue nil
    rescue => e
      File.open('/tmp/heathrow_debug.log', 'a') { |f| f.puts "STARTUP ERROR: #{e.message}\n#{e.backtrace.first(5).join("\n")}" }
      @filtered_messages = []
      @initial_load_done = true
      @needs_redraw = true
    end
  end

  # Wait for initial data load before entering main loop
  until @initial_load_done
    sleep 0.05
  end

  # Flush stdin before loop (CRITICAL - FROM RTFM)
  $stdin.getc while $stdin.wait_readable(0)

  # Main loop (like RTFM)
  @running = true
  @pending_view_refresh = false
  @editing = false
  @needs_redraw = true
  loop do
    if @pending_view_refresh && !@editing
      @pending_view_refresh = false
      # Only reload view data if we're in a named view (not a folder browse or source view)
      unless @current_folder || @in_source_view
        # Remember selected message by ID so we can restore position after rebuild
        selected_msg = current_message
        selected_id = selected_msg['id'] if selected_msg
        view = @views[@current_view]
        if view && view[:filters] && !view[:filters].empty?
          apply_view_filters(view)
          sort_messages
        end
        # Force re-organization in threaded mode
        if @show_threaded
          reset_threading(true)
          organize_current_messages(true)
        end
        # Defer index restoration for threaded views (display_messages is empty
        # after reset_threading; it gets populated during render). For flat views,
        # resolve immediately since @filtered_messages is the navigation list.
        if @show_threaded
          @pending_restore_id = selected_id
          @index = 0
        elsif selected_id
          new_idx = @filtered_messages.index { |m| m['id'] == selected_id }
          max_idx = @filtered_messages.size - 1
          @index = new_idx || [@index, max_idx].min
        else
          @index = [@index, @filtered_messages.size - 1].min
        end
        @index = 0 if @index < 0
      end
      @needs_redraw = true
    end
    # Check if feedback expired
    if @feedback_expires_at && Time.now >= @feedback_expires_at
      @needs_redraw = true
    end
    if @needs_redraw && !@editing
      render_all
      @needs_redraw = false
    end
    # Check for mailto trigger (from wezterm or external script)
    check_mailto_trigger

    chr = getchr(2, flush: false)  # 2s timeout to check for new mail
    begin
      if chr
        # Clear sticky feedback (errors, "message sent") on any keypress
        if @feedback_sticky
          @feedback_sticky = false
          @feedback_expires_at = Time.now  # Expire now so render_bottom_bar clears it
        end
        @needs_redraw = false  # Handlers that need redraw call render_all directly
        handle_input_key(chr)
      else
        check_new_mail
      end
    rescue => e
      # Non-fatal: log and show feedback instead of crashing
      File.open('/tmp/heathrow-crash.log', 'a') do |f|
        loc = e.backtrace&.first&.sub(/^.*lib\/heathrow\//, '')
        f.puts "#{Time.now.strftime('%Y-%m-%d %H:%M:%S')} ERROR: #{e.class}: #{e.message} at #{loc}"
        e.backtrace&.first(10)&.each { |l| f.puts "    #{l}" }
        f.puts
      end
      set_feedback("Error: #{e.message} (logged to /tmp/heathrow-crash.log)", 196, 5)
      @needs_redraw = true
    end
    break unless @running
  end
ensure
  cleanup
end

#run_compose_plugin(plugin) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 5730

def run_compose_plugin(plugin)
  pick_file = "/tmp/heathrow_plugin_pick_#{Process.pid}.txt"
  File.delete(pick_file) if File.exist?(pick_file)

  # Flush any queued input, restore terminal, clear screen
  $stdin.getc while $stdin.wait_readable(0)
  system("stty sane 2>/dev/null")
  Cursor.show
  print "\e[2J\e[H"  # Clear screen + home cursor

  cmd = plugin[:command].gsub('%{pick_file}', Shellwords.escape(pick_file))
  system(cmd)

  $stdin.raw!
  $stdin.echo = false
  Cursor.hide
  Rcurses.clear_screen
  setup_display
  create_panes
  render_all

  if File.exist?(pick_file)
    files = File.read(pick_file).lines.map(&:strip).reject(&:empty?)
    File.delete(pick_file) rescue nil
    files.select { |f| File.exist?(f) && File.file?(f) }
  else
    []
  end
end

#run_custom_binding(binding) ⇒ Object

Run a custom keybinding defined in heathrowrc



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# File 'lib/heathrow/ui/application.rb', line 858

def run_custom_binding(binding)
  if binding[:action]
    # Call a Heathrow method by name
    method_name = binding[:action].to_sym
    if respond_to?(method_name, true)
      send(method_name)
    else
      set_feedback("Unknown action: #{method_name}", 196, 3)
    end
    return
  end

  return unless binding[:shell]

  cmd = binding[:shell].dup

  # Substitute placeholders (shell-escaped for safety)
  if cmd.include?('%q')
    prompt_text = binding[:prompt] || "Query: "
    query = bottom_ask(prompt_text, "")
    return if query.nil? || query.strip.empty?
    cmd.gsub!('%q', Shellwords.escape(query))
  end
  if cmd.include?('%f')
    msg = current_message
    if msg
      meta = msg['metadata']
      meta = JSON.parse(meta) if meta.is_a?(String) rescue {}
      file_path = meta['maildir_file'] || msg['external_id'] || ''
      cmd.gsub!('%f', Shellwords.escape(file_path))
    else
      cmd.gsub!('%f', '')
    end
  end
  if cmd.include?('%i')
    msg = current_message
    msg_id = msg ? (msg['message_id'] || msg['external_id'] || '') : ''
    cmd.gsub!('%i', Shellwords.escape(msg_id))
  end
  if cmd.include?('%s')
    msg = current_message
    subject = msg ? (msg['subject'] || '') : ''
    cmd.gsub!('%s', Shellwords.escape(subject))
  end

  # Run the command with terminal restored (same pattern as run_rtfm_picker)
  system("stty sane 2>/dev/null")
  Cursor.show
  system(cmd)

  # Restore raw mode and redraw UI
  $stdin.raw!
  $stdin.echo = false
  Cursor.hide
  Rcurses.clear_screen
  setup_display
  create_panes
  render_all
end

#run_editor(path, cursor_line: nil, insert_mode: false) ⇒ Object

Run an external editor, restoring terminal state before/after



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# File 'lib/heathrow/ui/application.rb', line 2221

def run_editor(path, cursor_line: nil, insert_mode: false)
  editor = ENV['EDITOR'] || 'vim'
  # Restore terminal to cooked mode for the editor
  system("stty sane 2>/dev/null")
  print "\e[?25h"  # show cursor
  vim_args = ""
  if editor =~ /vim?\b/
    vim_args += " +#{cursor_line}" if cursor_line
    vim_args += " -c 'startinsert!'" if insert_mode
  end
  system("#{editor}#{vim_args} #{Shellwords.escape(path)}")
  success = $?.success?
  # Restore raw mode for rcurses
  $stdin.raw!
  $stdin.echo = false
  print "\e[?25l"  # hide cursor
  Rcurses.clear_screen
  setup_display
  create_panes
  render_all
  success
end

#run_onboarding_wizard ⇒ Object

Check for new mail — called on getchr timeout (every 2s idle) Syncs each source based on its poll_interval setting

First-time Onboarding Wizard ==========


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# File 'lib/heathrow/ui/application.rb', line 7760

def run_onboarding_wizard
  rows, cols = IO.console.winsize
  pw = [cols - 10, 70].min
  ph = [rows - 6, 30].min
  px = (cols - pw) / 2
  py = (rows - ph) / 2

  popup = Rcurses::Pane.new(px, py, pw, ph, 252, 0)
  popup.border = true
  popup.scroll = true

  welcome = []
  welcome << ""
  welcome << "  " + "Welcome to Heathrow!".bd.fg(226)
  welcome << "  " + "Where all your messages connect.".fg(245)
  welcome << ""
  welcome << "  " + "\u2500" * [pw - 6, 1].max
  welcome << ""
  welcome << "  No message sources configured yet."
  welcome << "  Let's get you started with your first source."
  welcome << ""
  welcome << "  Available source types:".bd.fg(39)
  welcome << ""
  welcome << "  " + "1".fg(226) + " - Maildir (local email, works with offlineimap/mbsync/fetchmail)"
  welcome << "  " + "2".fg(226) + " - RSS/Atom feeds"
  welcome << "  " + "3".fg(226) + " - WeeChat relay (IRC, Slack via WeeChat)"
  welcome << "  " + "4".fg(226) + " - Discord"
  welcome << "  " + "5".fg(226) + " - Telegram"
  welcome << "  " + "6".fg(226) + " - Instagram DMs"
  welcome << "  " + "7".fg(226) + " - Messenger"
  welcome << ""
  welcome << "  " + "s".fg(226) + " - Skip (configure later via 'S' for Sources)"
  welcome << ""
  welcome << "  " + "Pick a number to add your first source.".fg(245)

  popup.text = welcome.join("\n")
  popup.refresh

  loop do
    chr = getchr
    case chr
    when '1'
      popup_add_maildir
      break
    when '2'
      popup_add_rss
      break
    when '3'
      popup_add_weechat
      break
    when '4'..'7'
      set_feedback("Configure this source via 'S' (Sources) after startup", 226, 5)
      break
    when 's', 'S', 'ESC', 'q'
      break
    end
  end

  Rcurses.clear_screen
  setup_display
  create_panes
  render_all
end

#run_rtfm_picker ⇒ Object

Launch RTFM in file picker mode, return array of selected file paths



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# File 'lib/heathrow/ui/application.rb', line 5679

def run_rtfm_picker
  pick_file = "/tmp/rtfm_pick_#{Process.pid}.txt"
  File.delete(pick_file) if File.exist?(pick_file)

  # Flush input, restore terminal for RTFM
  $stdin.getc while $stdin.wait_readable(0)
  system("stty sane 2>/dev/null")
  Cursor.show

  system("rtfm --pick=#{Shellwords.escape(pick_file)}")

  # Restore raw mode and redraw UI
  $stdin.raw!
  $stdin.echo = false
  Cursor.hide
  Rcurses.clear_screen
  setup_display
  create_panes
  render_all

  if File.exist?(pick_file)
    files = File.read(pick_file).lines.map(&:strip).reject(&:empty?)
    File.delete(pick_file) rescue nil
    files.select { |f| File.exist?(f) && File.file?(f) }
  else
    []
  end
end

#safe_get_messages(filters = {}, custom_limit = nil, light: true) ⇒ Object

Helper method to safely get messages with automatic pagination for large databases



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# File 'lib/heathrow/ui/application.rb', line 339

def safe_get_messages(filters = {}, custom_limit = nil, light: true)
  # Use custom limit if provided, otherwise auto-paginate for large DBs
  limit = custom_limit
  if limit.nil? && (@total_message_count || 0) > 10000
    limit = 1000  # Default limit for large databases
  end

  @db.get_messages(filters, limit, 0, light: light)
end

#save_attachments(maildir_file, attachments, indices) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 3347

def save_attachments(maildir_file, attachments, indices)
  download_dir = @download_folder || @config.get('download_folder') || '~/Downloads'
  download_dir = File.expand_path(download_dir)
  if indices.size == 1
    att = attachments[indices[0]]
    name = att['name'] || att['filename'] || 'unnamed'
    default_path = File.join(download_dir, name)
    save_path = bottom_ask("Save to: ", default_path)
    return if save_path.nil? || save_path.strip.empty?
    save_path = File.expand_path(save_path.strip)
  else
    save_path = bottom_ask("Save #{indices.size} files to folder: ", download_dir)
    return if save_path.nil? || save_path.strip.empty?
    save_path = File.expand_path(save_path.strip)
  end

  mail = load_mail_file(maildir_file)
  return unless mail
  saved = 0
  indices.each do |i|
    att = attachments[i]
    mail_att = find_mail_attachment(mail, att)
    next unless mail_att
    if indices.size == 1
      dest = save_path
    else
      dest = File.join(save_path, mail_att.filename)
    end
    FileUtils.mkdir_p(File.dirname(dest))
    File.open(dest, 'wb') { |f| f.write(mail_att.body.decoded) }
    saved += 1
  end
  set_feedback("Saved #{saved} attachment#{saved != 1 ? 's' : ''}", 156, 2)
end

#save_browse_favorites ⇒ Object

── Save by browsing favorites (sF) ──



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# File 'lib/heathrow/ui/application.rb', line 4444

def save_browse_favorites
  favorites = get_favorite_folders
  @folder_display = favorites.map do |name|
    { name: name, full_name: name, depth: 0, has_children: false, collapsed: false }
  end
  save_folder_picker_loop("Save to Favorite")
end

#save_browse_folders ⇒ Object

── Save by browsing folders (sB) ── Opens the folder browser in "save mode": Enter picks the destination folder. Returns the chosen folder name, or nil if cancelled.



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# File 'lib/heathrow/ui/application.rb', line 4426

def save_browse_folders
  @folder_collapsed ||= {}
  maildir_path = File.expand_path('~/Maildir')
  folder_names = ['INBOX']
  Dir.glob(File.join(maildir_path, '.*')).sort.each do |dir|
    bn = File.basename(dir)
    next if bn == '.' || bn == '..'
    next unless File.directory?(dir)
    next unless File.directory?(File.join(dir, 'cur')) || File.directory?(File.join(dir, 'new'))
    folder_names << bn.sub(/^\./, '')
  end

  @folder_tree = build_folder_tree(folder_names)
  @folder_display = flatten_folder_tree(@folder_tree, '', 0, @folder_collapsed)
  save_folder_picker_loop("Save to Folder")
end

#save_custom_theme(name, colors) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 6368

def save_custom_theme(name, colors)
  rc_path = Config::HEATHROWRC
  return unless File.exist?(rc_path)

  content = File.read(rc_path)

  # Build the theme line
  # Only include keys that differ from Default
  default = COLOR_THEMES['Default']
  diff = colors.select { |k, v| v != default[k] }
  return if diff.empty?

  pairs = diff.map { |k, v| "#{k}: #{v}" }.join(", ")
  theme_line = "theme '#{name}', #{pairs}"

  # Replace existing theme definition or append
  pattern = /^theme\s+'#{Regexp.escape(name)}'.*/
  if content.match?(pattern)
    content.sub!(pattern, theme_line)
  else
    # Insert before the first blank line after the last theme line, or at end
    if content.include?("# \u2500\u2500 Views")
      content.sub!(/^(# \u2500\u2500 Views)/, "#{theme_line}\n\n\\1")
    else
      content << "\n#{theme_line}\n"
    end
  end

  File.write(rc_path, content)

  # Reload config to pick up the new theme
  @config.reload_rc
end

#save_favorite_folders(favorites) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 4110

def save_favorite_folders(favorites)
  now = Time.now.to_i
  @db.execute(
    "INSERT OR REPLACE INTO settings (key, value, updated_at) VALUES (?, ?, ?)",
    'favorite_folders', favorites.to_json, now
  )
end

#save_folder_picker_loop(title) ⇒ Object

Shared folder picker loop for save operations. Renders the folder list in the left pane, user picks with Enter. Returns chosen folder name or nil.



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# File 'lib/heathrow/ui/application.rb', line 4455

def save_folder_picker_loop(title)
  return nil if @folder_display.empty?
  idx = 0

  render_save_folder_picker(idx, title)

  loop do
    chr = getchr
    case chr
    when 'j', 'DOWN'
      idx = (idx + 1) % @folder_display.size
      render_save_folder_picker(idx, title)
    when 'k', 'UP'
      idx = (idx - 1) % @folder_display.size
      render_save_folder_picker(idx, title)
    when 'l', 'RIGHT'
      folder = @folder_display[idx]
      if folder && folder[:has_children] && folder[:collapsed]
        @folder_collapsed.delete(folder[:full_name])
        @folder_display = flatten_folder_tree(@folder_tree, '', 0, @folder_collapsed)
        render_save_folder_picker(idx, title)
      elsif folder
        render_all
        return folder[:full_name]
      end
    when 'h', 'LEFT'
      folder = @folder_display[idx]
      if folder && folder[:has_children] && !folder[:collapsed]
        @folder_collapsed[folder[:full_name]] = true
        @folder_display = flatten_folder_tree(@folder_tree, '', 0, @folder_collapsed)
        render_save_folder_picker(idx, title)
      elsif folder && folder[:depth] > 0
        parent_name = folder[:full_name].split('.')[0..-2].join('.')
        parent_idx = @folder_display.index { |f| f[:full_name] == parent_name }
        idx = parent_idx if parent_idx
        render_save_folder_picker(idx, title)
      end
    when 'PgDOWN'
      idx = [idx + (@panes[:left].h - 2), @folder_display.size - 1].min
      render_save_folder_picker(idx, title)
    when 'PgUP'
      idx = [idx - (@panes[:left].h - 2), 0].max
      render_save_folder_picker(idx, title)
    when 'HOME'
      idx = 0
      render_save_folder_picker(idx, title)
    when 'END'
      idx = @folder_display.size - 1
      render_save_folder_picker(idx, title)
    when 'ENTER'
      folder = @folder_display[idx]
      render_all
      return folder[:full_name] if folder
      return nil
    when 'q', 'ESC', "\e"
      render_all
      return nil
    end
  end
end

#save_folder_shortcuts ⇒ Object

Save folder shortcuts — configurable in ~/.heathrow/config.yml under save_folders:

save_folders:
"1": "Geir.Personal"
"2": "AA.Archive"
"3": "Projects.Archive"
"4": "Work.Archive"



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# File 'lib/heathrow/ui/application.rb', line 4286

def save_folder_shortcuts(shortcuts)
  now = Time.now.to_i
  @db.execute(
    "INSERT OR REPLACE INTO settings (key, value, updated_at) VALUES (?, ?, ?)",
    'folder_shortcuts', shortcuts.to_json, now
  )
end

#save_view_sort_order ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 6548

def save_view_sort_order
  view = @views[@current_view]
  if view && view[:filters].is_a?(Hash)
    # Save per-view
    view[:filters]['view_sort_order'] = @sort_order
    view[:filters]['view_sort_inverted'] = @sort_inverted
    @db.execute("UPDATE views SET filters = ?, updated_at = ? WHERE id = ?",
                [JSON.generate(view[:filters]), Time.now.to_i, view[:id]])
  else
    # Global fallback for built-in views (A, N)
    @config.set('ui.sort_order', @sort_order)
    @config.save
  end
end

#selected_source_has_items? ⇒ Boolean

Check if the selected source has manageable sub-items (feeds, channels, etc.)



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# File 'lib/heathrow/ui/application.rb', line 944

def selected_source_has_items?
  return false unless @filtered_messages[@index]
  source_type = @filtered_messages[@index]['source_type']
  %w[rss web].include?(source_type)
end

#send_composed_message(source, composed) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 5893

def send_composed_message(source, composed)
  # Warn about empty subject (like mutt) - this part stays synchronous
  if composed[:subject] == '(no subject)'
    confirm = bottom_ask("No subject, send anyway? [y/N] ")
    unless confirm&.strip&.downcase == 'y'
      set_feedback("Send cancelled", 245, 2)
      return
    end
  end

  source_type = source['plugin_type'] || source['type']

  # Load source module and create instance (fast, keep synchronous)
  module_name = source_type == 'web' ? 'webpage' : source_type
  require_relative "../sources/#{module_name}"

  class_name = case module_name
               when 'rss' then 'RSS'
               when 'webpage' then 'Webpage'
               else module_name.capitalize
               end
  source_class = Heathrow::Sources.const_get(class_name)

  instance = begin
    config = source['config']
    config = JSON.parse(config) if config.is_a?(String)
    source_class.new(source['name'], config || {}, @db)
  rescue ArgumentError
    source_class.new(source)
  end

  unless instance.respond_to?(:send_message)
    set_feedback("This source doesn't support sending messages", 196, 4)
    return
  end

  # Show sending indicator and return control to UI immediately
  label = CHAT_SOURCE_TYPES.include?(source_type) ? "Sending #{source_type} message" : "Sending"
  set_feedback("#{label}...", 226, 0)
  render_bottom_bar

  # Capture values needed by the thread
  orig_msg = composed[:original_message]
  orig_id = orig_msg['id'] if orig_msg

  Thread.new do
    begin
      result = if CHAT_SOURCE_TYPES.include?(source_type)
        target = composed[:to]
        if target.nil? || target.empty?
          if orig_msg && orig_msg['metadata']
            meta = orig_msg['metadata']
            meta = JSON.parse(meta) if meta.is_a?(String)
            target = meta['buffer'] || meta['thread_id'] || meta['conversation_id'] ||
                     meta['chat_jid'] || meta['channel_id'] || meta['chat_id'] if meta.is_a?(Hash)
          end
        end
        instance.send_message(target, composed[:subject], composed[:body])
      else
        in_reply_to = nil
        if orig_msg && orig_msg['metadata']
          metadata = JSON.parse(orig_msg['metadata']) rescue {}
          in_reply_to = metadata['message_id']
        end

        identity = current_identity(orig_msg)
        smtp_cmd = identity ? identity[:smtp] : nil
        from = composed[:from]
        from = identity[:from] if (from.nil? || from.empty?) && identity

        instance.send_message(
          composed[:to],
          composed[:subject],
          composed[:body],
          in_reply_to,
          from: from,
          cc: composed[:cc],
          bcc: composed[:bcc],
          reply_to: composed[:reply_to],
          extra_headers: composed[:extra_headers],
          smtp_command: smtp_cmd,
          attachments: composed[:attachments]
        )
      end

      if result[:success]
        if orig_id
          # Re-read metadata from DB to get current maildir_file path
          # (poller may have renamed the file since we captured orig_msg)
          fresh = @db.get_message(orig_id)
          if fresh
            orig_msg = fresh
          end
          # Sync disk flag first, then DB, to avoid poller race condition
          sync_maildir_flag(orig_msg, 'R', true) if orig_msg
          @db.execute("UPDATE messages SET replied = 1 WHERE id = ?", [orig_id])
          orig_msg['replied'] = 1 if orig_msg
        end
        msg = result[:message]
        if composed[:attachments] && !composed[:attachments].empty?
          msg += " (#{composed[:attachments].size} attachment(s))"
        end
        set_feedback(msg, 156, 0)
        render_message_list if orig_id
      else
        set_feedback(result[:message], 196, 4)
      end
    rescue => e
      set_feedback("Send error: #{e.message}", 196, 4)
      File.open('/tmp/heathrow_debug.log', 'a') { |f| f.puts "#{Time.now} send_composed_message error: #{e.message}\n#{e.backtrace.first(5).join("\n")}" }

    end
  end
end

#set_borders ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 182

def set_borders
  case @border
  when 0
    @panes[:left].border = false
    @panes[:right].border = false
  when 1
    @panes[:left].border = false
    @panes[:right].border = true
  when 2
    @panes[:left].border = true
    @panes[:right].border = true
  when 3
    @panes[:left].border = true
    @panes[:right].border = false
  end
end

#set_feedback(message, color = 156, duration = 3) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 2244

def set_feedback(message, color = 156, duration = 3)
  @feedback_message = message
  @feedback_color = color
  # duration 0 or errors: persist until next user action (cleared by clear_sticky_feedback)
  @feedback_sticky = (duration == 0 || color == 196)
  @feedback_expires_at = if @feedback_sticky
    nil  # Never auto-expire; cleared on keypress
  else
    Time.now + duration
  end
  if @panes[:bottom]
    @panes[:bottom].text = " #{message}".fg(color)
    @panes[:bottom].refresh
  end
end

#set_source_poll_interval ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 7391

def set_source_poll_interval
  return unless @in_source_view && @filtered_messages[@index]
  source_id = @filtered_messages[@index]['id']
  source = @source_manager.sources[source_id]
  return unless source

  current = (source['poll_interval'] || 900).to_i
  current_str = if current <= 0
    "0 (disabled)"
  elsif current < 60
    "#{current}s"
  elsif current < 3600
    "#{current / 60}m"
  else
    "#{current / 3600}h"
  end

  lines = []
  lines << "POLL INTERVAL for #{source['name']}".bd.fg(226)
  lines << "=" * 40
  lines << ""
  lines << "Current: #{current_str}".fg(245)
  lines << ""
  lines << "Enter interval (examples):".fg(39)
  lines << "  30s   = 30 seconds"
  lines << "  5m    = 5 minutes"
  lines << "  1h    = 1 hour"
  lines << "  0     = disabled"
  lines << ""
  lines << "Recommended:".fg(245)
  lines << "  Maildir: 30s (fast local scan)"
  lines << "  RSS/Web: 15m"
  lines << "  Messenger/Instagram: 5m"
  lines << "  Weechat: 2m"

  @panes[:right].text = lines.join("\n")
  @panes[:right].refresh

  @panes[:bottom].prompt = "Interval: "
  @panes[:bottom].text = ""
  @editing = true
  @panes[:bottom].editline
  @editing = false
  input = @panes[:bottom].text.strip

  seconds = parse_interval(input)
  if seconds.nil?
    set_feedback("Invalid interval format", 196, 2)
  else
    @db.execute("UPDATE sources SET poll_interval = ? WHERE id = ?", seconds, source_id)
    @source_last_sync&.delete("#{source['plugin_type']}_#{source_id}")
    label = seconds == 0 ? "disabled" : "#{seconds}s"
    set_feedback("Poll interval set to #{label}", 40, 2)
    @source_manager.reload
    saved_index = @index
    show_sources
    @index = saved_index
    render_message_list
    render_sources_info
    return
  end

  render_sources_info
end

#set_view_top_bg ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 7355

def set_view_top_bg
  view = @views[@current_view]
  unless view
    set_feedback("No custom view selected", 196, 2)
    return
  end

  current_bg = (view[:filters].is_a?(Hash) && view[:filters]['top_bg']) || @topcolor
  input = bottom_ask("Top bar bg (0-255/hex/empty=default): ", current_bg.to_s)
  return render_all if input.nil?

  view[:filters] ||= {}
  if input.strip.empty?
    view[:filters].delete('top_bg')
  else
    color = parse_color_value(input.strip)
    unless color
      set_feedback("Invalid color", 196, 2)
      return
    end
    view[:filters]['top_bg'] = input.strip
  end

  # Save to DB
  if view[:id]
    @db.save_view({
      id: view[:id],
      name: view[:name],
      key_binding: @current_view,
      filters: view[:filters],
      sort_order: view[:sort_order] || 'timestamp DESC'
    })
  end
  render_all
end

#setup_display ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 126

def setup_display
  # Get terminal dimensions like GiTerm does
  require 'io/console'
  if IO.console
    @h, @w = IO.console.winsize
  else
    # Fallback for non-terminal environments
    @h = ENV['LINES']&.to_i || 24
    @w = ENV['COLUMNS']&.to_i || 80
  end
end

#show_all_labels ⇒ Object

Show all labels currently in use across all messages



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# File 'lib/heathrow/ui/application.rb', line 4660

def show_all_labels
  rows = @db.execute("SELECT labels FROM messages WHERE labels IS NOT NULL AND labels != '[]'")
  label_counts = Hash.new(0)
  rows.each do |row|
    labels = JSON.parse(row['labels']) rescue next
    labels.each { |l| label_counts[l] += 1 } if labels.is_a?(Array)
  end

  if label_counts.empty?
    set_feedback("No labels in use", 245, 2)
    return
  end

  lines = ["LABELS IN USE".bd.fg(226), ""]
  label_counts.sort_by { |_, c| -c }.each do |label, count|
    lines << "  #{label}".fg(51) + " (#{count})".fg(245)
  end
  lines << ""
  lines << "Use 'l' to add/remove labels.".fg(245)
  lines << "Filter views on labels with 'F' (label field).".fg(245)
  @panes[:right].text = lines.join("\n")
  @panes[:right].refresh
end

#show_all_messages ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 1907

def show_all_messages
  flush_pending_read
  invalidate_counts
  @current_view = 'A'
  @current_folder = nil
  @in_source_view = false
  @panes[:right].content_update = true
  @current_source_filter = nil
  @sort_order = @config.rc('sort_order', 'latest')
  @sort_inverted = false
  @last_rendered_index = nil  # Force right pane refresh

  # Restore per-view threading mode
  reset_threading
  restore_view_thread_mode

  # Show view name instantly
  render_top_bar

  @load_limit = 200
  @filtered_messages = @db.get_messages({}, @load_limit, 0, light: true)
  sort_messages
  @index = 0
  render_all
  track_browsed_message
end

#show_extended_help ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 6725

def show_extended_help
  @in_help_mode = true
  @panes[:right].content_update = false
  @panes[:right].ix = 0  # Reset scroll position
  
  # Try to read README.md for comprehensive help
  readme_path = File.join(File.dirname(__FILE__), '..', '..', '..', 'README.md')
  
  if File.exist?(readme_path)
    readme_text = File.read(readme_path)
    colored_text = colorize_markdown(readme_text)
    @panes[:right].text = colored_text
    @panes[:right].refresh
  else
    # Show extended help text
    @panes[:right].text = get_extended_help_text
    @panes[:right].refresh
  end
  
  @showing_help = false  # Reset for next time
end

#show_favorites_browser ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 4118

def show_favorites_browser
  favorites = get_favorite_folders
  @in_folder_browser = true
  @in_favorites_browser = true
  @folder_browser_index = 0
  @panes[:top].bg = @topcolor
  @folder_count_cache = {}  # Fresh counts each time

  # Build display from favorites only (no DB queries — counts fetched on select)
  @folder_display = favorites.map do |name|
    {
      name: name,
      full_name: name,
      depth: 0,
      has_children: false,
      collapsed: false
    }
  end

  render_folder_browser
  @panes[:top].text = " Heathrow - ".bd.fg(255) + "Favorites".bd.fg(226) + " [#{favorites.size} folders]".fg(246)
  @panes[:top].refresh
  @panes[:bottom].text = " j/k:Navigate | Enter:Open | C-Up/C-Down:Reorder | B:All folders | +:Remove fav | ESC:Back".fg(245)
  @panes[:bottom].refresh

  loop do
    chr = getchr
    case chr
    when 'j', 'DOWN'
      @folder_browser_index = (@folder_browser_index + 1) % @folder_display.size if @folder_display.size > 0
      render_folder_browser
    when 'k', 'UP'
      @folder_browser_index = (@folder_browser_index - 1) % @folder_display.size if @folder_display.size > 0
      render_folder_browser
    when 'l', 'RIGHT', 'ENTER'
      folder = @folder_display[@folder_browser_index]
      if folder
        open_folder(folder[:full_name])
        break
      end
    when 'B'
      # Switch to full folder browser
      show_folder_browser
      break
    when '+'
      # Remove selected folder from favorites
      folder = @folder_display[@folder_browser_index]
      if folder
        favorites = get_favorite_folders
        if favorites.include?(folder[:full_name])
          favorites.delete(folder[:full_name])
          save_favorite_folders(favorites)
          @folder_display = favorites.map do |name|
            { name: name, full_name: name, depth: 0, has_children: false, collapsed: false }
          end
          @folder_browser_index = [@folder_browser_index, @folder_display.size - 1].min
          @folder_browser_index = 0 if @folder_browser_index < 0
          set_feedback("Removed #{folder[:full_name]} from favorites", 226, 2)
          render_folder_browser
          @panes[:top].text = " Heathrow - ".bd.fg(255) + "Favorites".bd.fg(226) + " [#{@folder_display.size} folders]".fg(246)
          @panes[:top].refresh
        end
      end
    when 'C-UP', '{'
      # Move favorite up
      if @folder_browser_index > 0 && @folder_display.size > 1
        favorites = get_favorite_folders
        i = @folder_browser_index
        favorites[i], favorites[i - 1] = favorites[i - 1], favorites[i]
        save_favorite_folders(favorites)
        @folder_display = favorites.map { |name| { name: name, full_name: name, depth: 0, has_children: false, collapsed: false } }
        @folder_browser_index -= 1
        render_folder_browser
      end
    when 'C-DOWN', '}'
      # Move favorite down
      if @folder_browser_index < @folder_display.size - 1 && @folder_display.size > 1
        favorites = get_favorite_folders
        i = @folder_browser_index
        favorites[i], favorites[i + 1] = favorites[i + 1], favorites[i]
        save_favorite_folders(favorites)
        @folder_display = favorites.map { |name| { name: name, full_name: name, depth: 0, has_children: false, collapsed: false } }
        @folder_browser_index += 1
        render_folder_browser
      end
    when 'q', 'ESC', "\e", 'h', 'LEFT'
      @in_folder_browser = false
      @in_favorites_browser = false
      render_all
      break
    end
  end
end

#show_filter_details(view_num, view_config) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 7479

def show_filter_details(view_num, view_config)
  filter_text = []
  filter_text << "VIEW #{view_num} CONFIGURATION".bd.fg(226)
  filter_text << "=" * 40
  filter_text << ""
  
  if view_config[:filters] && !view_config[:filters].empty?
    filter_text << "Name:".bd.fg(39) + " #{view_config[:name] || 'View ' + view_num.to_s}"
    filter_text << ""
    filter_text << "Active Filters:".bd.fg(39)
    filter_text << "-" * 20
    
    filters = view_config[:filters]
    
    if filters['source_types'] || filters[:source_types]
      types = filters['source_types'] || filters[:source_types]
      filter_text << "Source Types:".fg(226) + " #{types.join(', ')}"
    end
    
    if filters['sender_pattern'] || filters[:sender_pattern]
      pattern = filters['sender_pattern'] || filters[:sender_pattern]
      filter_text << "Sender Pattern:".fg(226) + " #{pattern}"
    end
    
    if filters['subject_pattern'] || filters[:subject_pattern]
      pattern = filters['subject_pattern'] || filters[:subject_pattern]
      filter_text << "Subject Pattern:".fg(226) + " #{pattern}"
    end
    
    if filters['content_patterns'] || filters[:content_patterns]
      patterns = filters['content_patterns'] || filters[:content_patterns]
      filter_text << "Content Patterns:".fg(226) + " #{patterns.join(', ')}"
      filter_text << "  (comma=AND, pipe=OR within each)".fg(245)
    end
    
    # Legacy filter display
    if filters['content_keywords'] || filters[:content_keywords]
      keywords = filters['content_keywords'] || filters[:content_keywords]
      filter_text << "Content Keywords:".fg(226) + " #{keywords.join(', ')}"
    end
    
    if filters['content_regex'] || filters[:content_regex]
      regex = filters['content_regex'] || filters[:content_regex]
      filter_text << "Content Regex:".fg(226) + " #{regex}"
    end
    
    if filters['search'] || filters[:search]
      search = filters['search'] || filters[:search]
      filter_text << "Legacy Search:".fg(226) + " #{search}"
    end
    
    if filters.key?('is_read') || filters.key?(:is_read)
      is_read = filters['is_read'] || filters[:is_read]
      status = is_read == false ? "Unread only" : (is_read == true ? "Read only" : "All")
      filter_text << "Read Status:".fg(226) + " #{status}"
    end
    
    filter_text << ""
    filter_text << "-" * 40
    filter_text << ""
    filter_text << "Matching Messages:".bd.fg(39) + " #{@filtered_messages.size}"
  else
    filter_text << "No filters configured".fg(245)
    filter_text << ""
    filter_text << "This view will show an empty list until"
    filter_text << "you configure filters."
    filter_text << ""
    filter_text << "Available filter options:".bd.fg(39)
    filter_text << "• Source types (email, whatsapp, etc.)"
    filter_text << "• Sender pattern (pipe | for OR)"
    filter_text << "• Subject pattern (pipe | for OR)"
    filter_text << "• Content patterns (comma AND, pipe OR)"
    filter_text << "• Label (use 'l' to add labels, filter here)"
    filter_text << "• Read/unread status"
    filter_text << ""
    filter_text << "Pattern Examples:".bd.fg(39)
    filter_text << "Sender: Mom|Dad|Sister (any of them)"
    filter_text << "Content: error|warning,critical"
    filter_text << "  → (error OR warning) AND critical"
    filter_text << "Content: budget,2024|2025,report"
    filter_text << "  → budget AND (2024 OR 2025) AND report"
  end
  
  @panes[:right].text = filter_text.join("\n")
  @panes[:right].refresh
end

#show_folder_browser ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 3846

def show_folder_browser
  @in_folder_browser = true
  @in_favorites_browser = false
  @folder_browser_index = 0
  @panes[:top].bg = @topcolor
  @folder_collapsed ||= {}
  @folder_count_cache = {}  # Fresh counts each time
  @browser_favorites = nil  # Fresh favorites read

  # Discover folders from disk (instant — no DB queries)
  maildir_path = File.expand_path('~/Maildir')
  folder_names = ['INBOX']
  Dir.glob(File.join(maildir_path, '.*')).sort.each do |dir|
    bn = File.basename(dir)
    next if bn == '.' || bn == '..'
    next unless File.directory?(dir)
    next unless File.directory?(File.join(dir, 'cur')) || File.directory?(File.join(dir, 'new'))
    folder_names << bn.sub(/^\./, '')
  end

  @folder_list = folder_names
  @folder_tree = build_folder_tree(folder_names)
  # Start with top-level collapsed for speed
  @folder_collapsed = {} if @folder_collapsed.nil?
  @folder_display = flatten_folder_tree(@folder_tree, '', 0, @folder_collapsed)

  render_folder_browser
  folder_browser_loop
end

#show_help ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 6710

def show_help
  @in_help_mode = true
  @panes[:right].content_update = false
  @panes[:right].ix = 0  # Reset scroll position
  help_text = get_help_text  # Use the colored version directly



  # Just set the text and let rcurses handle everything
  @panes[:right].text = help_text
  @panes[:right].refresh

  @showing_help = true
end

#show_loading(text = "Loading...") ⇒ Object

Message reply/forward functions



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# File 'lib/heathrow/ui/application.rb', line 5170

def show_loading(text = "Loading...")
  @panes[:bottom].text = " #{text}".fg(245)
  @panes[:bottom].refresh
end

#show_new_messages ⇒ Object

View switching



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# File 'lib/heathrow/ui/application.rb', line 2535

def show_new_messages
  flush_pending_read
  invalidate_counts
  @current_view = 'N'
  @current_folder = nil
  @in_source_view = false
  @panes[:right].content_update = true
  @sort_order = @config.rc('sort_order', 'latest')
  @sort_inverted = false
  @last_rendered_index = nil  # Force right pane refresh

  # Restore per-view threading mode
  reset_threading
  restore_view_thread_mode

  render_top_bar

  @load_limit = 200
  @filtered_messages = @db.get_messages({is_read: false}, @load_limit, 0, light: true)
  sort_messages
  @index = 0
  render_all
  track_browsed_message
end

#show_settings_popup ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 6008

def show_settings_popup
  rows, cols = IO.console.winsize
  pw = [cols - 20, 60].min
  pw = [pw, 46].max
  ph = 17
  px = (cols - pw) / 2
  py = (rows - ph) / 2

  popup = Rcurses::Pane.new(px, py, pw, ph, 252, 0)
  popup.border = true
  popup.scroll = false

  settings_rows = [:default_view, :color_theme, :date_format, :sort_order, :sort_inverted, :pane_width, :border_style, :confirm_purge, :download_folder, :editor_args, :default_email, :smtp_command]
  labels = {
    default_view: "Default View",
    color_theme: "Color Theme",
    date_format: "Date Format",
    sort_order: "Sort Order",
    sort_inverted: "Sort Inverted",
    pane_width: "Pane Width",
    border_style: "Border Style",
    confirm_purge: "Confirm Purge",
    download_folder: "Download Folder",
    editor_args: "Editor Args",
    default_email: "Default Email",
    smtp_command: "SMTP Command"
  }
  @download_folder ||= @config.get('download_folder') || '~/Downloads'

  theme_names = all_themes.keys
  date_formats = [
    ['%b %e', 'Mon  D'],
    ['%d/%m %H:%M', 'DD/MM HH:MM'],
    ['%m/%d %H:%M', 'MM/DD HH:MM'],
    ['%Y-%m-%d %H:%M', 'ISO'],
    ['%d.%m %H:%M', 'DD.MM HH:MM'],
    ['%d %b %H:%M', 'DD Mon HH:MM'],
    ['%b %d %H:%M', 'Mon DD HH:MM']
  ]
  sort_orders = ['latest', 'alphabetical', 'sender', 'from', 'conversation', 'unread', 'source']
  border_labels = ['none', 'right', 'both', 'left']
  # Build view choices: A, N, plus any user-defined views
  view_choices = [['A', 'All'], ['N', 'New/Unread']]
  @views.each do |key, v|
    view_choices << [key, "#{key}: #{v[:name]}"]
  end

  sel = 0

  build_popup = -> {
    popup.full_refresh  # Clear diff cache (theme editor/bottom_ask may have overlaid)
    inner_w = pw - 4
    lines = []
    lines << ""
    lines << "  " + "Settings".bd.fg(theme[:accent])
    lines << "  " + "\u2500" * [inner_w - 3, 1].max

    settings_rows.each_with_index do |key, i|
      label = labels[key]
      val = case key
            when :default_view
              vc = view_choices.find { |v| v[0] == @default_view }
              vc ? vc[1] : @default_view
            when :color_theme  then @color_theme
            when :date_format
              df = date_formats.find { |f| f[0] == @date_format }
              df ? df[1] : @date_format
            when :sort_order   then @sort_order
            when :sort_inverted then @sort_inverted ? "Yes" : "No"
            when :pane_width   then "#{@width * 10}%"
            when :border_style then border_labels[@border] || 'none'
            when :confirm_purge then @confirm_purge ? "Yes" : "No"
            when :download_folder then @download_folder
            when :editor_args then @editor_args.to_s.empty? ? "(none)" : @editor_args
            when :default_email then @default_email.to_s.empty? ? "(not set)" : @default_email
            when :smtp_command then @smtp_command.to_s.empty? ? "(not set)" : @smtp_command
            end
      display = "  %-18s \u25C0 %-12s \u25B6" % [label, val]
      if i == sel
        lines << display.fg(theme[:accent])
      else
        lines << display
      end
    end

    lines << ""
    lines << "  " + "\u2191\u2193:navigate  \u2190\u2192:change  ESC:close".fg(245)

    popup.text = lines.join("\n")
    popup.ix = 0
    popup.refresh
  }

  cycle_setting = ->(dir, enter: false) {
    key = settings_rows[sel]
    case key
    when :default_view
      idx = view_choices.find_index { |v| v[0] == @default_view } || 0
      idx = (idx + dir) % view_choices.length
      @default_view = view_choices[idx][0]
    when :color_theme
      if enter
        show_theme_editor
      else
        idx = theme_names.index(@color_theme) || 0
        idx = (idx + dir) % theme_names.length
        @color_theme = theme_names[idx]
      end
      @topcolor = theme[:top_bg] || 235
      @bottomcolor = theme[:bottom_bg] || 235
      @cmdcolor = theme[:cmd_bg] || 17
    when :date_format
      idx = date_formats.find_index { |f| f[0] == @date_format } || 0
      idx = (idx + dir) % date_formats.length
      @date_format = date_formats[idx][0]
    when :sort_order
      idx = sort_orders.index(@sort_order) || 0
      idx = (idx + dir) % sort_orders.length
      @sort_order = sort_orders[idx]
    when :sort_inverted
      @sort_inverted = !@sort_inverted
    when :pane_width
      @width = ((@width - 1 + dir) % 6) + 1  # Cycle 1-6
    when :border_style
      @border = (@border + dir) % 4
    when :confirm_purge
      @confirm_purge = !@confirm_purge
    when :download_folder
      # Text input, handled separately on Enter
    end
  }

  build_popup.call

  loop do
    k = getchr
    case k
    when 'ESC', 'q'
      break
    when 'k', 'UP'
      sel = (sel - 1) % settings_rows.length
      build_popup.call
    when 'j', 'DOWN'
      sel = (sel + 1) % settings_rows.length
      build_popup.call
    when 'ENTER'
      case settings_rows[sel]
      when :download_folder
        result = bottom_ask("Download folder: ", @download_folder)
        @download_folder = result.strip if result && !result.strip.empty?
      when :editor_args
        result = bottom_ask("Editor args: ", @editor_args || '')
        @editor_args = result if result
      when :default_email
        result = bottom_ask("Default email: ", @default_email || '')
        @default_email = result.strip if result && !result.strip.empty?
      when :smtp_command
        result = bottom_ask("SMTP command: ", @smtp_command || '')
        @smtp_command = result.strip if result && !result.strip.empty?
      else
        cycle_setting.call(1, enter: true)
      end
      build_popup.call
    when 'l', 'RIGHT'
      case settings_rows[sel]
      when :download_folder
        result = bottom_ask("Download folder: ", @download_folder)
        @download_folder = result.strip if result && !result.strip.empty?
      when :editor_args
        result = bottom_ask("Editor args: ", @editor_args || '')
        @editor_args = result if result
      when :default_email
        result = bottom_ask("Default email: ", @default_email || '')
        @default_email = result.strip if result && !result.strip.empty?
      when :smtp_command
        result = bottom_ask("SMTP command: ", @smtp_command || '')
        @smtp_command = result.strip if result && !result.strip.empty?
      else
        cycle_setting.call(1)
      end
      build_popup.call
    when 'h', 'LEFT'
      case settings_rows[sel]
      when :download_folder
        result = bottom_ask("Download folder: ", @download_folder)
        @download_folder = result.strip if result && !result.strip.empty?
      when :editor_args
        result = bottom_ask("Editor args: ", @editor_args || '')
        @editor_args = result if result
      when :default_email
        result = bottom_ask("Default email: ", @default_email || '')
        @default_email = result.strip if result && !result.strip.empty?
      when :smtp_command
        result = bottom_ask("SMTP command: ", @smtp_command || '')
        @smtp_command = result.strip if result && !result.strip.empty?
      else
        cycle_setting.call(-1)
      end
      build_popup.call
    end
  end

  # Save all settings
  @config.set('ui.default_view', @default_view)
  @config.set('ui.color_theme', @color_theme)
  @config.set('ui.date_format', @date_format)
  @config.set('ui.sort_order', @sort_order)
  @config.set('ui.width', @width)
  @config.set('ui.border', @border)
  @config.set('ui.confirm_purge', @confirm_purge)
  @config.set('download_folder', @download_folder)
  @config.set('ui.editor_args', @editor_args)
  @config.set('default_email', @default_email)
  @config.set('smtp_command', @smtp_command)
  @config.save

  # Apply changes
  set_borders
  left_width = (@w - 4) * @width / 10
  @panes[:left].w = left_width
  @panes[:right].x = @panes[:left].w + 4
  @panes[:right].w = @w - @panes[:left].w - 4

  # Reset threading for sort changes
  reset_threading(true)
  sort_messages
  organize_current_messages(true)

  Rcurses.clear_screen
  @panes.each_value { |p| p.cleanup if p.respond_to?(:cleanup) }
  render_all
rescue => e
  Rcurses.clear_screen
  render_all
end

#show_source_messages(source_id) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 1836

def show_source_messages(source_id)
  @current_view = 'A'  # Use All Messages view but filtered
  @in_source_view = false
  @panes[:right].content_update = true
  
  # Get source name for display
  source = @source_manager.sources[source_id]
  @current_source_filter = source ? source['name'] : source_id
  
  # Get messages from this source
  @filtered_messages = @db.get_messages({source_id: source_id}, nil, 0, light: true)
  sort_messages
  @index = 0
  render_all
end

#show_sources ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 1852

def show_sources
  flush_pending_read
  @current_view = 'S'
  @in_source_view = true
  @panes[:right].content_update = true
  @current_source_filter = nil
  show_loading("Loading sources...")

  # Reset threading state when changing views
  reset_threading
  
  # Reload source colors to ensure they're fresh
  load_source_colors
  
  # Convert sources to pseudo-messages for display in left pane
  sources = @db.get_all_sources
  stats = @db.get_source_stats  # Single query for all source counts
  @filtered_messages = sources.map do |source|
      s = stats[source['id']] || { count: 0, unread: 0 }
      count = s[:count]
      unread_count = s[:unread]

      # Health check
      health = source_health_check(source)

      msg = {
        'id' => source['id'],
        'source_id' => source['id'],
        'sender' => (source['plugin_type'] || 'unknown').capitalize,
        'subject' => source['name'],
        'content' => format_poll_interval(source['poll_interval']),
        'timestamp' => source['last_poll'] || Time.now.to_s,
        'is_read' => source['enabled'] == 1 ? 1 : 0,
        'is_starred' => 0,
        'source_type' => source['plugin_type'],
        'source_color' => source['color'],
        'msg_count' => count,
        'unread_count' => unread_count,
        'poll_interval' => source['poll_interval'],
        'health_ok' => health[:ok],
        'health_msg' => health[:msg],
        'enabled' => source['enabled']
      }
      msg
    end
  
  # Apply current sort order to sources
  sort_messages
  @index = 0
  
  # Render everything
  render_all
  render_sources_info
end

#show_theme_editor ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 6244

def show_theme_editor
  rows, cols = IO.console.winsize
  # Core display keys only (source colors are set per-source via 'c' in Sources view)
  core_keys = [:unread, :read, :accent, :thread, :dm, :tag, :star,
               :quote1, :quote2, :quote3, :quote4, :sig,
               :top_bg, :bottom_bg, :cmd_bg]
  all_keys = core_keys

  # Work on a copy of current theme values
  editing = theme.dup

  # Determine if we're editing a custom theme or need a new name
  is_custom = @config.custom_themes.key?(@color_theme)
  theme_name = is_custom ? @color_theme : nil

  pw = [cols - 20, 52].min
  ph = [rows - 6, all_keys.size + 7].min
  px = (cols - pw) / 2
  py = (rows - ph) / 2

  popup = Rcurses::Pane.new(px, py, pw, ph, 252, 0)
  popup.border = true
  popup.scroll = false

  sel = 0
  scroll_offset = 0
  visible_rows = ph - 6  # header + footer lines

  key_labels = {
    unread: "Unread", read: "Read", accent: "Accent", thread: "Thread",
    dm: "DM", tag: "Tag", quote1: "Quote 1", quote2: "Quote 2",
    quote3: "Quote 3", quote4: "Quote 4", sig: "Signature",
    top_bg: "Top Bar BG", bottom_bg: "Bottom Bar BG", cmd_bg: "Command BG"
  }

  build_editor = -> {
    inner_w = pw - 4
    lines = []
    title = theme_name ? "Edit: #{theme_name}" : "Theme Editor (#{@color_theme})"
    lines << ""
    lines << "  " + title.bd.fg(editing[:accent] || 10)
    lines << "  " + "\u2500" * [inner_w - 3, 1].max

    # Ensure scroll follows selection
    scroll_offset = sel if sel < scroll_offset
    scroll_offset = sel - visible_rows + 1 if sel >= scroll_offset + visible_rows

    visible_keys = all_keys[scroll_offset, visible_rows] || []
    visible_keys.each_with_index do |key, vi|
      actual_idx = scroll_offset + vi
      val = editing[key] || 0
      label = key_labels[key] || key.to_s.sub('source_', 'Src: ').gsub('_', ' ').capitalize
      # Color swatch: two block chars in the color
      swatch = "\u2588\u2588".fg(val)
      line = "  %-16s %s %3d" % [label, swatch, val]
      lines << (actual_idx == sel ? line.fg(editing[:accent] || 10) : line)
    end

    # Scroll indicators
    lines << "  " + (scroll_offset + visible_rows < all_keys.size ? "\u2193 more".fg(245) : "")
    lines << "  " + "j/k:\u2195 h/l:\u00b11 H/L:\u00b110 #:set s:save ESC:back".fg(245)

    popup.text = lines.join("\n")
    popup.ix = 0
    popup.refresh
  }

  build_editor.call

  loop do
    k = getchr
    case k
    when 'ESC', 'q'
      break
    when 'k', 'UP'
      sel = (sel - 1) % all_keys.size
      build_editor.call
    when 'j', 'DOWN'
      sel = (sel + 1) % all_keys.size
      build_editor.call
    when 'PgUP'
      sel = [sel - visible_rows, 0].max
      build_editor.call
    when 'PgDOWN'
      sel = [sel + visible_rows, all_keys.size - 1].min
      build_editor.call
    when 'l', 'RIGHT'
      editing[all_keys[sel]] = [(editing[all_keys[sel]] || 0) + 1, 255].min
      build_editor.call
    when 'h', 'LEFT'
      editing[all_keys[sel]] = [(editing[all_keys[sel]] || 0) - 1, 0].max
      build_editor.call
    when 'L'
      editing[all_keys[sel]] = [(editing[all_keys[sel]] || 0) + 10, 255].min
      build_editor.call
    when 'H'
      editing[all_keys[sel]] = [(editing[all_keys[sel]] || 0) - 10, 0].max
      build_editor.call
    when /^[0-9]$/
      # Type a number directly
      result = bottom_ask("Color value (0-255): ", k)
      if result && result =~ /^\d+$/
        editing[all_keys[sel]] = result.to_i.clamp(0, 255)
      end
      build_editor.call
    when 's'
      # Save as custom theme
      unless theme_name
        result = bottom_ask("Theme name: ", "My Theme")
        next unless result && !result.strip.empty?
        theme_name = result.strip
      end
      # Write to heathrowrc
      save_custom_theme(theme_name, editing)
      @color_theme = theme_name
      @topcolor = editing[:top_bg] || 235
      @bottomcolor = editing[:bottom_bg] || 235
      @cmdcolor = editing[:cmd_bg] || 17
      set_feedback("Theme '#{theme_name}' saved", 46, 3)
      break
    end
  end
end

#sort_messages ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 6563

def sort_messages
  return if @filtered_messages.empty?

  # Make sure we have a mutable array
  @filtered_messages = @filtered_messages.dup if @filtered_messages.frozen?

  # Pre-compute timestamp cache to avoid repeated parsing in sort comparisons
  ts_cache = {}
  @filtered_messages.each { |m| ts_cache[m.object_id] = timestamp_to_time(m['timestamp']) }

  begin
    case @sort_order
    when 'alphabetical'
      # Sort alphabetically by subject/title (ignoring special chars)
      @filtered_messages.sort! do |a, b|
        # Get subjects and clean them for comparison
        subject_a_raw = (a['subject'] || a['content'] || '').to_s
        subject_b_raw = (b['subject'] || b['content'] || '').to_s
        
        # Remove special characters at the beginning for sorting
        subject_a = subject_a_raw.gsub(/^[#\[\]@\s]+/, '').downcase
        subject_b = subject_b_raw.gsub(/^[#\[\]@\s]+/, '').downcase
        
        subject_cmp = subject_a <=> subject_b
        
        if subject_cmp != 0
          subject_cmp
        elsif subject_a_raw.downcase != subject_b_raw.downcase
          # If cleaned names are same but originals differ, compare originals
          subject_a_raw.downcase <=> subject_b_raw.downcase
        else
          # If subjects are the same, sort by timestamp
          begin
            ts_cache[b.object_id] <=> ts_cache[a.object_id]
          rescue
            0
          end
        end
      end
    when 'sender'
      # Sort by sender name, then by timestamp
      @filtered_messages.sort! do |a, b|
        sender_a = (a['sender'] || '').to_s.downcase
        sender_b = (b['sender'] || '').to_s.downcase
        sender_cmp = sender_a <=> sender_b
        
        if sender_cmp != 0
          sender_cmp
        else
          # Safe timestamp comparison
          begin
            ts_cache[b.object_id] <=> ts_cache[a.object_id]
          rescue
            0
          end
        end
      end
    when 'from'
      # Group by sender, most recently active sender first
      # Within each sender group, newest message first
      latest_per_sender = {}
      @filtered_messages.each do |m|
        s = display_sender(m).downcase
        t = ts_cache[m.object_id] || Time.at(0)
        latest_per_sender[s] = t if !latest_per_sender[s] || t > latest_per_sender[s]
      end
      @filtered_messages.sort! do |a, b|
        sa = display_sender(a).downcase
        sb = display_sender(b).downcase
        if sa == sb
          (ts_cache[b.object_id] || Time.at(0)) <=> (ts_cache[a.object_id] || Time.at(0))
        else
          (latest_per_sender[sb] || Time.at(0)) <=> (latest_per_sender[sa] || Time.at(0))
        end
      end
    when 'unread'
      # Sort by unread first, then by timestamp
      @filtered_messages.sort! do |a, b|
        read_cmp = a['is_read'].to_i <=> b['is_read'].to_i
        if read_cmp != 0
          read_cmp  # Unread (0) first
        else
          # Safe timestamp comparison
          begin
            ts_cache[b.object_id] <=> ts_cache[a.object_id]
          rescue
            0  # If timestamp parsing fails, consider them equal
          end
        end
      end
    when 'conversation'
      # Group by conversation: thread_id, or sender (the other party)
      @filtered_messages.sort! do |a, b|
        conv_a = a['thread_id'] || a['sender'] || ''
        conv_b = b['thread_id'] || b['sender'] || ''
        conv_cmp = conv_a.to_s.downcase <=> conv_b.to_s.downcase

        if conv_cmp != 0
          conv_cmp
        else
          begin
            ts_cache[b.object_id] <=> ts_cache[a.object_id]
          rescue
            0
          end
        end
      end
    when 'source'
      # Sort by source type, then by timestamp
      @filtered_messages.sort! do |a, b|
        source_a = (a['source_type'] || '').to_s
        source_b = (b['source_type'] || '').to_s
        source_cmp = source_a <=> source_b

        if source_cmp != 0
          source_cmp
        else
          # Safe timestamp comparison
          begin
            ts_cache[b.object_id] <=> ts_cache[a.object_id]
          rescue
            0  # If timestamp parsing fails, consider them equal
          end
        end
      end
    else  # 'latest'
      # Sort by timestamp descending (newest first)
      @filtered_messages.sort! do |a, b|
        begin
          ts_cache[b.object_id] <=> ts_cache[a.object_id]
        rescue
          0  # If timestamp parsing fails, consider them equal
        end
      end
    end
    
    # Apply invert if flag is set
    @filtered_messages.reverse! if @sort_inverted
    
  rescue => e
    # If any error occurs during sorting, just leave the list as is
    # and show an error message
    @panes[:bottom].text = " Sort error: #{e.message}".fg(196)
    @panes[:bottom].refresh
  end
end

#source_health_check(source) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 1608

def source_health_check(source)
  stype = source['plugin_type'] || source['type']

  # Check last_error
  if source['last_error'] && !source['last_error'].to_s.empty?
    return { ok: false, msg: source['last_error'] }
  end

  # Check enabled
  unless source['enabled'] == 1
    return { ok: false, msg: "Source disabled" }
  end

  config = source['config']
  config = JSON.parse(config) if config.is_a?(String)
  config = {} unless config.is_a?(Hash)

  case stype
  when 'maildir'
    path = config['path'] || config['maildir_path']
    if path && !Dir.exist?(path.to_s)
      return { ok: false, msg: "Maildir path not found" }
    end
  when 'rss'
    feeds = config['feeds'] || []
    if feeds.empty?
      return { ok: false, msg: "No feeds configured" }
    end
    bad = feeds.select { |f| f['last_status'] && f['last_status'] != 'ok' }
    unless bad.empty?
      return { ok: false, msg: "#{bad.size} feed(s) failing" }
    end
  when 'web'
    pages = config['pages'] || []
    if pages.empty?
      return { ok: false, msg: "No pages configured" }
    end
  when 'messenger'
    cookie_file = File.join(Dir.home, '.heathrow', 'cookies', 'messenger.json')
    unless File.exist?(cookie_file)
      return { ok: false, msg: "No cookies (run setup)" }
    end
    begin
      cookies = JSON.parse(File.read(cookie_file))
      unless cookies['c_user'] && cookies['xs']
        return { ok: false, msg: "Missing auth cookies" }
      end
    rescue
      return { ok: false, msg: "Corrupt cookie file" }
    end
    error_file = File.join(Dir.home, '.heathrow', 'cookies', 'messenger_error.txt')
    if File.exist?(error_file)
      last_line = File.readlines(error_file).last.to_s.strip
      if last_line.include?('login_required')
        return { ok: false, msg: "Login expired" }
      end
    end
  when 'instagram'
    cookie_file = File.join(Dir.home, '.heathrow', 'cookies', 'instagram.json')
    unless File.exist?(cookie_file)
      return { ok: false, msg: "No cookies (run setup)" }
    end
    begin
      cookies = JSON.parse(File.read(cookie_file))
      unless cookies['sessionid']
        return { ok: false, msg: "Missing session cookie" }
      end
    rescue
      return { ok: false, msg: "Corrupt cookie file" }
    end
  when 'weechat'
    host = config['host'] || config['relay_host']
    unless host && !host.to_s.empty?
      return { ok: false, msg: "No relay host configured" }
    end
  when 'workspace'
    session_file = File.join(Dir.home, '.config', 'workspace-cli', 'sessions', 'session.json')
    unless File.exist?(session_file)
      return { ok: false, msg: "No session file. Run: workspace-cli auth login" }
    end
    refresh = `secret-tool lookup service workspace-cli account session 2>/dev/null`.strip
    if refresh.empty?
      return { ok: false, msg: "No refresh token in keyring. Run: workspace-cli auth login" }
    end
  end

  { ok: true, msg: "OK" }
end

#switch_to_default_view ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 2560

def switch_to_default_view
  dv = @default_view || 'A'
  case dv
  when 'A' then show_all_messages
  when 'N' then show_new_messages
  else switch_to_view(dv)
  end
end

#switch_to_view(key) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 2569

def switch_to_view(key)
  flush_pending_read
  invalidate_counts
  @current_view = key
  @current_folder = nil
  @in_source_view = false
  @panes[:right].content_update = true
  @last_rendered_index = nil  # Force right pane refresh

  # Restore per-view threading mode
  reset_threading
  restore_view_thread_mode

  render_top_bar

  view = @views[key]

  # Restore per-view sort order, or use global default
  if view && view[:filters].is_a?(Hash) && view[:filters]['view_sort_order']
    @sort_order = view[:filters]['view_sort_order']
    @sort_inverted = view[:filters]['view_sort_inverted'] || false
  else
    @sort_order = @config.rc('sort_order', 'latest')
    @sort_inverted = false
  end

  # Restore saved section order for this view
  if view && view[:filters] && view[:filters]['section_order']
    @section_order = view[:filters]['section_order'].dup
  end

  @load_limit = 200
  if view && view[:filters] && !view[:filters].empty?
    apply_view_filters(view)
    sort_messages
    @index = 0
    render_all
    track_browsed_message
  else
    @filtered_messages = []
    @index = 0
    @panes[:right].text = ""
    @panes[:right].refresh
    render_all
  end
end

#sync_instagram(db: nil) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 8756

def sync_instagram(db: nil)
  db ||= @db
  sources = db.get_sources.select { |s| s['plugin_type'] == 'instagram' }
  return false if sources.empty?

  require_relative '../sources/instagram'
  total = 0
  sources.each do |source|
    config = source['config']
    config = JSON.parse(config) if config.is_a?(String)
    instance = Heathrow::Sources::Instagram.new(source['name'], config, db)
    total += (instance.sync(source['id']) || 0)
  end
  total > 0
rescue => e
  File.open('/tmp/heathrow_debug.log', 'a') { |f| f.puts "Instagram sync error: #{e.message}\n#{e.backtrace.first(3).join("\n")}" }
  false
end

#sync_maildir(folder: nil, db: nil, &block) ⇒ Object

Returns true if any data changed, false otherwise



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# File 'lib/heathrow/ui/application.rb', line 8668

def sync_maildir(folder: nil, db: nil, &block)
  db ||= @db
  source = db.get_sources.find { |s| s['plugin_type'] == 'maildir' }
  return false unless source

  require_relative '../sources/maildir'
  maildir = Heathrow::Sources::Maildir.new(source)

  if folder.is_a?(Array)
    all_folders = maildir.discover_folders
    changed = false
    folder.each do |fname|
      f = all_folders.find { |fd| fd[:name] == fname }
      changed = true if f && maildir.sync_folder(db, source['id'], f[:name], f[:path])
    end
    changed
  elsif folder
    folders = maildir.discover_folders
    f = folders.find { |fd| fd[:name] == folder }
    f ? maildir.sync_folder(db, source['id'], f[:name], f[:path]) : false
  else
    maildir.sync_all(db, source['id'], &block)
  end
rescue => e
  File.open('/tmp/heathrow_debug.log', 'a') { |f| f.puts "Maildir sync error: #{e.message}\n#{e.backtrace.first(3).join("\n")}" }
end

#sync_maildir_flag(msg, flag_char, add) ⇒ Object

Sync a Maildir flag on disk after DB update flag_char: 'S' for seen, 'F' for flagged, 'T' for trashed add: true to add flag, false to remove



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# File 'lib/heathrow/ui/application.rb', line 8797

def sync_maildir_flag(msg, flag_char, add)
  return unless msg
  metadata = msg['metadata']
  metadata = JSON.parse(metadata) if metadata.is_a?(String)
  return unless metadata.is_a?(Hash)
  file_path = metadata['maildir_file']
  return unless file_path && File.exist?(file_path)

  require_relative '../sources/maildir'
  new_path = Heathrow::Sources::Maildir.rename_with_flag(file_path, flag_char, add: add)

  # Update the stored file path in metadata and DB
  if new_path != file_path
    metadata['maildir_file'] = new_path
    msg['metadata'] = metadata
    @db.execute("UPDATE messages SET metadata = ? WHERE id = ?", metadata.to_json, msg['id'])
  end
rescue => e
  # Don't crash on flag sync failures
  File.open('/tmp/heathrow_debug.log', 'a') { |f| f.puts "Flag sync error: #{e.message}" } if ENV['DEBUG']
end

#sync_messenger(db: nil) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 8733

def sync_messenger(db: nil)
  db ||= @db
  sources = db.get_sources.select { |s| s['plugin_type'] == 'messenger' }
  return false if sources.empty?

  require_relative '../sources/messenger'
  total = 0
  errors = []
  sources.each do |source|
    config = source['config']
    config = JSON.parse(config) if config.is_a?(String)
    instance = Heathrow::Sources::Messenger.new(source['name'], config, db)
    total += (instance.sync(source['id']) || 0)
    errors << instance.sync_error if instance.sync_error
  end
  @last_sync_errors = (@last_sync_errors || []) + errors if errors.any?
  total > 0
rescue => e
  @last_sync_errors = (@last_sync_errors || []) << "Messenger: #{e.message}"
  File.open('/tmp/heathrow_debug.log', 'a') { |f| f.puts "Messenger sync error: #{e.message}\n#{e.backtrace.first(3).join("\n")}" }
  false
end

#sync_rss(db: nil) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 8695

def sync_rss(db: nil)
  db ||= @db
  sources = db.get_sources.select { |s| s['plugin_type'] == 'rss' }
  return false if sources.empty?

  require_relative '../sources/rss'
  total = 0
  sources.each do |source|
    config = source['config']
    config = JSON.parse(config) if config.is_a?(String)
    instance = Heathrow::Sources::RSS.new(source['name'], config, db)
    total += (instance.sync(source['id']) || 0)
  end
  total > 0
rescue => e
  File.open('/tmp/heathrow_debug.log', 'a') { |f| f.puts "RSS sync error: #{e.message}\n#{e.backtrace.first(3).join("\n")}" }
  false
end

#sync_webwatch(db: nil) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 8714

def sync_webwatch(db: nil)
  db ||= @db
  sources = db.get_sources.select { |s| s['plugin_type'] == 'web' }
  return false if sources.empty?

  require_relative '../sources/webpage'
  total = 0
  sources.each do |source|
    config = source['config']
    config = JSON.parse(config) if config.is_a?(String)
    instance = Heathrow::Sources::Webpage.new(source['name'], config, db)
    total += (instance.sync(source['id']) || 0)
  end
  total > 0
rescue => e
  File.open('/tmp/heathrow_debug.log', 'a') { |f| f.puts "Webwatch sync error: #{e.message}\n#{e.backtrace.first(3).join("\n")}" }
  false
end

#sync_weechat(db: nil) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 8775

def sync_weechat(db: nil)
  db ||= @db
  sources = db.get_sources.select { |s| s['plugin_type'] == 'weechat' }
  return false if sources.empty?

  require_relative '../sources/weechat'
  total = 0
  sources.each do |source|
    config = source['config']
    config = JSON.parse(config) if config.is_a?(String)
    instance = Heathrow::Sources::Weechat.new(source['name'], config, db)
    total += (instance.sync(source['id']) || 0)
  end
  total > 0
rescue => e
  File.open('/tmp/heathrow_debug.log', 'a') { |f| f.puts "WeeChat sync error: #{e.message}\n#{e.backtrace.first(3).join("\n")}" }
  false
end

#tag_all_toggle ⇒ Object

Tag/untag all messages in current view



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# File 'lib/heathrow/ui/application.rb', line 2832

def tag_all_toggle
  msgs = @filtered_messages.reject { |m| header_message?(m) }
  ids = msgs.map { |m| m['id'] }.compact
  if ids.all? { |id| @tagged_messages.include?(id) }
    # All tagged, untag all
    ids.each { |id| @tagged_messages.delete(id) }
    set_feedback("Untagged all #{ids.size} messages", 14, 2)
  else
    # Tag all
    ids.each { |id| @tagged_messages.add(id) }
    set_feedback("Tagged all #{ids.size} messages", 14, 2)
  end
  render_message_list
end

#tag_by_regex ⇒ Object

Tag/untag messages matching a regex (Ctrl+t, like RTFM)



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# File 'lib/heathrow/ui/application.rb', line 2800

def tag_by_regex
  pattern = bottom_ask("Tag regex (default=all): ", ".*")
  return if pattern.nil?

  begin
    regex = Regexp.new(pattern, Regexp::IGNORECASE)
  rescue RegexpError => e
    set_feedback("Invalid regex: #{e.message}", 196, 3)
    return
  end

  count = 0
  @filtered_messages.each do |msg|
    next if header_message?(msg)
    next unless msg['id']

    match = [msg['sender'], msg['subject'], msg['content']].compact.any? { |f| f.match?(regex) }
    if match
      if @tagged_messages.include?(msg['id'])
        @tagged_messages.delete(msg['id'])
      else
        @tagged_messages.add(msg['id'])
        count += 1
      end
    end
  end

  set_feedback("Toggled #{count} tags (#{@tagged_messages.size} total tagged)", 14, 3)
  render_message_list
end

#test_selected_source ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 1217

def test_selected_source
  return unless @filtered_messages[@index]
  
  source_data = @filtered_messages[@index]
  source_id = source_data['id']
  source_type = source_data['source_type'] || source_data['plugin_type'] || source_data['type']
  
  @panes[:bottom].text = " Testing #{source_data['subject'] || source_data['name']}...".fg(226)
  @panes[:bottom].refresh
  
  # Try to create source instance and test
  begin
    require 'ostruct'
    
    # Get the actual source from database
    source = @db.get_source_by_id(source_id)
    
    if source
      # Load the source module
      begin
        require_relative "../sources/#{source_type}"
      rescue LoadError
        @panes[:bottom].text = " Source module not found: #{source_type}".fg(196)
        @panes[:bottom].refresh
        sleep(2)
        return
      end
      
      # Create instance with proper structure
      source_wrapper = OpenStruct.new(
        id: source['id'],
        config: source['config'].is_a?(String) ? JSON.parse(source['config']) : source['config']
      )
      
      # Get the class
      class_name = case source_type
                   when 'rss' then 'RSS'
                   when 'webpage' then 'Webpage'
                   else source_type.capitalize
                   end
      source_class = Heathrow::Sources.const_get(class_name)
      
      # Create instance and test
      instance = begin
        source_class.new(source)
      rescue ArgumentError
        config = source['config']
        config = JSON.parse(config) if config.is_a?(String)
        source_class.new(source['name'], config || {}, @db)
      end
      
      if instance.respond_to?(:test_connection)
        progress = ->(msg) {
          @panes[:bottom].text = " #{msg}".fg(226)
          @panes[:bottom].refresh
        }
        result = instance.test_connection(&progress)

        if result[:success]
          set_feedback("✓ #{result[:message]}", 156, 0)
        else
          set_feedback("✗ #{result[:message]}", 196, 0)
          # Offer to remove failed feeds (RSS/web)
          if result[:failed_feeds] && !result[:failed_feeds].empty?
            result[:failed_feeds].each do |feed_name|
              answer = bottom_ask("Remove failed feed '#{feed_name}'? [y/N] ")
              if answer&.strip&.downcase == 'y'
                feed_entry = instance.list_feeds.find { |f| (f[:title] || f[:url]) == feed_name }
                if feed_entry
                  instance.remove_feed(feed_entry[:url])
                  set_feedback("Removed #{feed_name}", 156, 3)
                  render_sources_info
                end
              end
            end
          end
        end
      else
        set_feedback("Test not available for #{source_type} sources", 226, 0)
      end
    end
  rescue => e
    set_feedback("Error: #{e.message}", 196, 0)
  end
end

#theme ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 203

def theme
  base = COLOR_THEMES['Default']
  selected = all_themes[@color_theme]
  selected ? base.merge(selected) : base
end

#timestamp_to_time(ts) ⇒ Object

Helper method to get Time object from timestamp for sorting



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# File 'lib/heathrow/ui/application.rb', line 379

def timestamp_to_time(ts)
  return Time.at(0) if ts.nil? || ts.to_s.empty? || ts.to_s == "0"

  if ts.is_a?(Integer) || ts.to_s.match?(/^\d+$/)
    Time.at(ts.to_i)
  else
    Time.parse(ts.to_s)
  end
rescue => e
  Time.at(0)
end

#toggle_collapse_expand ⇒ Object

SPACE key: toggle collapse/expand in threaded view



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# File 'lib/heathrow/ui/application.rb', line 2766

def toggle_collapse_expand
  return unless @show_threaded && @organizer

  msg = current_message
  return unless msg

  # For headers, toggle directly
  if msg['is_dm_header'] || msg['is_channel_header'] || msg['is_thread_header']
    expand_current_item  # This already toggles
  elsif msg['channel_id'] || msg['thread_id']
    # For messages inside a group, collapse the parent
    collapse_current_item
  end
  # Non-threaded mode: no-op
end

#toggle_delete_mark ⇒ Object

Toggle delete mark on current message (like mutt 'd') Does NOT immediately delete — just marks visually with strikethrough



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# File 'lib/heathrow/ui/application.rb', line 5071

def toggle_delete_mark
  @delete_marked ||= Set.new

  # If messages are tagged, operate on all tagged
  if @tagged_messages.size > 0
    already_marked = @tagged_messages.all? { |id| @delete_marked.include?(id) }
    if already_marked
      @tagged_messages.each { |id| @delete_marked.delete(id) }
      set_feedback("Unmarked #{@tagged_messages.size} from deletion", 156, 2)
    else
      @tagged_messages.each { |id| @delete_marked.add(id) }
      set_feedback("Marked #{@tagged_messages.size} for deletion ('<' to purge)", 196, 2)
    end
    @tagged_messages.clear
  else
    msg = current_message
    return unless msg
    return if header_message?(msg)

    if @delete_marked.include?(msg['id'])
      @delete_marked.delete(msg['id'])
      set_feedback("Undeleted", 156, 2)
    else
      @delete_marked.add(msg['id'])
      set_feedback("Marked for deletion (#{@delete_marked.size} total, '<' to purge)", 196, 2)
    end
    advance_index
  end
  render_message_list
  render_message_content
  render_bottom_bar
end

#toggle_favorite_folder ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 4257

def toggle_favorite_folder
  # Add/remove current folder from favorites
  msg = current_message
  return unless msg
  metadata = msg['metadata']
  metadata = JSON.parse(metadata) if metadata.is_a?(String)
  folder = metadata.is_a?(Hash) ? metadata['maildir_folder'] : nil
  folder ||= @current_folder
  return unless folder

  favorites = get_favorite_folders
  if favorites.include?(folder)
    favorites.delete(folder)
    set_feedback("Removed #{folder} from favorites", 226, 2)
  else
    favorites << folder
    set_feedback("Added #{folder} to favorites", 156, 2)
  end
  save_favorite_folders(favorites)
end

#toggle_group_read_status(header) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 3622

def toggle_group_read_status(header)
  # Use the section_messages stored in the header if available
  messages = header['section_messages']
  
  # Fallback to finding messages via organizer if not stored in header
  if !messages && @show_threaded && @organizer
    organized = @organizer.get_organized_view
    
    # Find the section this header belongs to
    section = organized.find do |s|
      if header['is_channel_header']
        s[:type] == 'channel' && s[:name] == header['channel_name']
      elsif header['is_thread_header']
        s[:type] == 'thread' && s[:subject] == header['subject']
      elsif header['is_dm_header']
        s[:type] == 'dm_section'
      else
        false
      end
    end
    
    messages = section[:messages] if section
  end
  
  return unless messages && !messages.empty?
  
  # Check if all messages are read
  all_read = messages.all? { |m| m['is_read'].to_i == 1 }
  
  # Toggle all messages in this section
  messages.each do |msg|
    next unless msg['id'] && !msg['id'].to_s.start_with?('header_')  # Skip synthetic headers

    if all_read
      @db.mark_as_unread(msg['id'])
      msg['is_read'] = 0
    else
      @db.mark_as_read(msg['id'])
      msg['is_read'] = 1
    end
  end
  invalidate_counts

  # Re-sort if sorting by unread
  if @sort_order == 'unread'
    sort_messages
    # Reset threading to reorganize with new unread counts (preserve collapsed state)
    reset_threading(true)
  end
  
  # Update displays if UI is initialized
  if @panes && @w
    render_top_bar
    render_message_list
  end
  
  # Show feedback
  action = all_read ? "unread" : "read"
  set_feedback("Marked #{messages.size} messages as #{action}", 156, 3)
end

#toggle_inline_image ⇒ Object

Toggle image display in right pane (I key)



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# File 'lib/heathrow/ui/application.rb', line 8264

def toggle_inline_image
  if @showing_image
    clear_inline_image
    render_message_content
    return
  end

  return unless init_termpix

  msg = current_message
  return unless msg
  msg = ensure_full_message(msg)

  http_urls = []

  # 1. Check attachments for image URLs (Discord, Messenger, Instagram, etc.)
  att_urls = image_urls_from_attachments(msg)
  http_urls.concat(att_urls)

  # 2. Check HTML content for <img> tags (email, RSS)
  html = msg['html_content']
  if (!html || html.strip.empty?) && msg['content'] =~ /\A\s*<(!DOCTYPE|html|head|body)\b/i
    html = msg['content']
  end
  if html && !html.strip.empty?
    html_urls = extract_image_urls(html).select { |u| u.start_with?('http') }
    http_urls.concat(html_urls)
  end

  http_urls.uniq!

  if http_urls.empty?
    set_feedback("No images found", 245, 2)
    return
  end

  set_feedback("Loading #{http_urls.size > 1 ? "#{http_urls.size} images" : 'image'}...", 226, 2)
  image_paths = []
  http_urls.first(10).each do |url|
    path = cached_image(url)
    image_paths << path if path && File.exist?(path) && File.size(path) > 100
  end

  if image_paths.empty?
    set_feedback("Download failed for #{http_urls.size} image(s)", 196, 2)
    return
  end

  # Clear right pane and show images
  n = image_paths.size
  label = n == 1 ? "1 image" : "#{n} images"
  @panes[:right].text = " [#{label}]  Press ESC to return".fg(245)
  @panes[:right].full_refresh  # Full refresh to clear image area

  pane_w = @panes[:right].w - 2
  pane_h = @panes[:right].h - 2
  img_x = @panes[:right].x
  base_y = @termpix.protocol == :kitty ? @panes[:right].y + 1 : @panes[:right].y

  # Composite multiple images into a grid tile so they use the full pane area
  display_path = if image_paths.size == 1
    image_paths.first
  else
    composite = File.join(Dir.home, '.heathrow', 'image_cache', 'composite.png')
    escaped = image_paths.map { |p| Shellwords.escape(p) }
    # Calculate grid columns: sqrt gives a balanced grid
    cols = Math.sqrt(image_paths.size).ceil
    system("montage #{escaped.join(' ')} -geometry +2+2 -tile #{cols}x -background none #{Shellwords.escape(composite)} 2>/dev/null")
    File.exist?(composite) ? composite : image_paths.first
  end

  @termpix.show(display_path,
    x: img_x,
    y: base_y,
    max_width: pane_w,
    max_height: pane_h)
  @showing_image = true
  @panes[:right].content_update = false
rescue => e
  set_feedback("Image error: #{e.message}", 196, 2)
end

#toggle_read ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 3740

def toggle_read
  # Write debug log
  
  msg = current_message
  return unless msg
  return if @in_source_view  # Don't toggle read in source view
  
  # Log the message details
  
  # HOUSE DIAGNOSTIC: Check if message has an ID!
  unless msg['id']
    # Show error in bottom bar
    @panes[:bottom].text = " ERROR: Message has no ID! Cannot toggle.".fg(196)
    @panes[:bottom].refresh
    return
  end
  
  # CRITICAL FIX: Convert is_read to integer for comparison
  current_read_status = msg['is_read'].to_i
  
  # Toggle based on current state
  if current_read_status == 1
    success = @db.mark_as_unread(msg['id'])
    if success
      msg['is_read'] = 0
    end
  else
    success = @db.mark_as_read(msg['id'])
    if success
      msg['is_read'] = 1
    end
  end
  
  # Update displays immediately if UI is initialized
  if @panes && @w
    render_top_bar  # Update unread count
    render_message_list
    render_message_content
  end
end

#toggle_read_status ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 3451

def toggle_read_status
  # Batch mode: if messages are tagged, toggle read on all tagged
  if @tagged_messages && !@tagged_messages.empty?
    toggle_tagged_read_status
    return
  end

  msg = current_message
  return unless msg

  # Check if this is a source/channel header
  if msg['is_channel_header'] || msg['is_thread_header'] || msg['is_dm_header']
    # Toggle read status for all messages in this group
    toggle_group_read_status(msg)
  else
    # Regular message toggle
    toggle_single_message_read(msg)
  end
end

#toggle_selected_source ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 1210

def toggle_selected_source
  return unless @filtered_messages[@index]
  source_id = @filtered_messages[@index]['id']
  @source_manager.toggle_source(source_id)
  show_sources
end

#toggle_single_message_read(msg) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 3683

def toggle_single_message_read(msg)
  # Don't try to toggle headers
  return if msg['is_header']
  return unless msg['id'] && !msg['id'].to_s.start_with?('header_')

  # Toggle the specific message
  current_read_status = msg['is_read'].to_i
  invalidate_counts

  if current_read_status == 1
    success = @db.mark_as_unread(msg['id'])
    if success
      msg['is_read'] = 0
      sync_maildir_flag(msg, 'S', false)
      set_feedback("Message marked as unread", 156, 3)
    end
  else
    success = @db.mark_as_read(msg['id'])
    if success
      msg['is_read'] = 1
      sync_maildir_flag(msg, 'S', true)
      set_feedback("Message marked as read", 156, 3)

      # Remove from Unread view if currently in it
      if is_unread_view?
        if @show_threaded
          # In threaded view, need to reload filtered messages to rebuild threads
          reset_threading
          @filtered_messages = @db.get_messages({is_read: false}, 1000, 0, light: true)
          sort_messages
          organize_current_messages(force_reinit: true)
          @index = [@index, filtered_messages_size - 1].min
          @index = 0 if @index < 0
        else
          # In flat view, just remove from list
          @filtered_messages.delete_at(@index)
          @index = [@index, @filtered_messages.size - 1].min if @index >= @filtered_messages.size
          @index = 0 if @index < 0 || @filtered_messages.empty?
        end
      end
    end
  end

  # Re-sort if sorting by unread
  if @sort_order == 'unread'
    sort_messages
    # Reset threading to reorganize with new unread counts (preserve collapsed state)
    reset_threading(true)
  end
  
  # Update displays immediately if UI is initialized
  if @panes && @w
    render_top_bar  # Update unread count
    render_message_list  # This will update the visual display including background colors
  end
end

#toggle_sort_invert ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 6516

def toggle_sort_invert
  # Toggle the invert flag
  @sort_inverted = !@sort_inverted

  # Save per-view sort
  save_view_sort_order
  
  # For threaded views, we need to reload the full message list before re-sorting
  if @show_threaded && @current_view == 'A'
    # Reload all messages to ensure we have the complete list
    @filtered_messages = @db.get_messages({}, 1000, 0, light: true)
  elsif @show_threaded && @current_view == 'N'
    # Reload unread messages
    @filtered_messages = @db.get_messages({is_read: false}, 1000, 0, light: true)
  elsif @show_threaded && @current_source_filter
    # Reload messages for current source
    @filtered_messages = @db.get_messages({source_id: @current_source_filter}, nil, 0, light: true)
  end
  
  # Reset threading state to force reorganization with new sort (preserve collapsed state)
  reset_threading(true)
  
  # Re-sort and redisplay messages
  sort_messages
  
  # Force reinit the organizer with the newly sorted messages
  organize_current_messages(true)
  
  @index = 0  # Reset to top
  render_all  # Re-render everything
end

#toggle_star ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 3781

def toggle_star
  msg = current_message
  return unless msg
  @db.toggle_star(msg['id'])
  msg['is_starred'] = msg['is_starred'] == 1 ? 0 : 1
  invalidate_counts

  # Sync flagged status to Maildir file
  sync_maildir_flag(msg, 'F', msg['is_starred'] == 1)

  render_message_list
  render_bottom_bar
end

#toggle_tag ⇒ Object

Toggle tag on current message



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# File 'lib/heathrow/ui/application.rb', line 2783

def toggle_tag
  msg = current_message
  return unless msg
  return if header_message?(msg)
  return unless msg['id']

  if @tagged_messages.include?(msg['id'])
    @tagged_messages.delete(msg['id'])
  else
    @tagged_messages.add(msg['id'])
  end
  advance_index
  render_message_list
  render_message_content
end

#toggle_tagged_read_status ⇒ Object

Toggle read status on all tagged messages, then clear tags



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# File 'lib/heathrow/ui/application.rb', line 3472

def toggle_tagged_read_status
  tagged_msgs = @filtered_messages.select { |m| m['id'] && @tagged_messages.include?(m['id']) }
  return if tagged_msgs.empty?

  # Determine direction: if any are unread, mark all as read; otherwise mark all unread
  any_unread = tagged_msgs.any? { |m| m['is_read'].to_i == 0 }
  count = 0

  tagged_msgs.each do |msg|
    if any_unread
      next if msg['is_read'].to_i == 1  # Already read
      success = @db.mark_as_read(msg['id'])
      if success
        msg['is_read'] = 1
        sync_maildir_flag(msg, 'S', true)
        count += 1
      end
    else
      next if msg['is_read'].to_i == 0  # Already unread
      success = @db.mark_as_unread(msg['id'])
      if success
        msg['is_read'] = 0
        sync_maildir_flag(msg, 'S', false)
        count += 1
      end
    end
  end

  action = any_unread ? "read" : "unread"
  set_feedback("Marked #{count} tagged messages as #{action}", 156, 3)
  @tagged_messages.clear

  # Update displays
  if @panes && @w
    render_top_bar
    render_message_list
  end
end

#track_browsed_message ⇒ Object

Mark the previous message as read when moving away from it



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# File 'lib/heathrow/ui/application.rb', line 230

def track_browsed_message
  flush_pending_read

  # Remember current message so it gets marked read when we leave it
  msg = current_message
  return unless msg
  return if header_message?(msg)
  return unless msg['id'] && !msg['id'].to_s.start_with?('header_')

  if msg['is_read'].to_i == 0
    @browsed_message_ids.add(msg['id'])
    @pending_mark_read = msg
  end
end

#truncate_to_width(str, max_width) ⇒ Object

Highlight URLs in a line, applying base_color to non-URL text Truncate a string to fit within a given display width (CJK-aware)



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# File 'lib/heathrow/ui/application.rb', line 8591

def truncate_to_width(str, max_width)
  w = 0
  str.each_char.with_index do |c, i|
    cw = Rcurses.display_width(c)
    return str[0...i] if w + cw > max_width
    w += cw
  end
  str
end

#uncollapse_for_message(msg) ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 2945

def uncollapse_for_message(msg)
  return unless msg && @organizer
  msg_id = msg['id']

  # Find which channel contains this message (use section[:name] as collapse key)
  if @channel_collapsed
    @organizer.instance_variable_get(:@channels)&.each do |_channel_id, channel_data|
      if channel_data[:messages]&.any? { |m| m['id'] == msg_id }
        @channel_collapsed[channel_data[:name]] = false
        return
      end
    end
  end

  # Find which thread contains this message
  if @thread_collapsed
    @organizer.instance_variable_get(:@threads)&.each do |_thread_id, thread_data|
      if thread_data[:messages]&.any? { |m| m['id'] == msg_id }
        @thread_collapsed[thread_data[:subject].to_s] = false
        return
      end
    end
  end

  # Uncollapse DM section if it's a DM
  if msg['is_dm']
    if @sort_order == 'conversation'
      # Find which conversation this DM belongs to
      metadata = @organizer.send(:parse_metadata, msg['metadata']) rescue {}
      dm_key = msg['sender'] || msg['subject'] || 'Unknown'
      @dm_collapsed[dm_key] = false
    elsif @dm_section_collapsed
      @dm_section_collapsed = false
    end
  end
end

#unsee_current_message ⇒ Object

Mark message as "unseen" - remove from browsed set



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# File 'lib/heathrow/ui/application.rb', line 279

def unsee_current_message
  msg = current_message
  return unless msg
  return if msg['is_header']

  if @browsed_message_ids.delete(msg['id'])
    set_feedback("Message marked as unseen", 226, 2)
    render_all
  end
end

#update_display ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 2296

def update_display
  # Only update panes that have changed
  # This is a placeholder for optimization
  refresh_panes
end

#update_window_title ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 1303

def update_window_title
  # Get view name - check for source filter first
  view_name = if @current_source_filter && @current_view == 'A'
    "Source: #{@current_source_filter}"
  elsif @views[@current_view]
    view = @views[@current_view]
    "[#{@current_view}] #{view[:name]}"
  elsif @in_source_view
    "Sources"
  else
    @view_names[@current_view] || @current_view
  end
  
  # Add message count with unread/total format if applicable (matching top bar)
  count_info = if @filtered_messages && !@filtered_messages.empty? && !@in_source_view
    total = @filtered_messages.size
    unread = @filtered_messages.count { |m| m['is_read'].to_i == 0 }
    " (#{unread}/#{total})"
  else
    ""
  end
  
  # Set window title using ANSI escape sequence (direct print, no subprocess)
  $stdout.print "\033]0;Heathrow: #{view_name}#{count_info}\007"
  $stdout.flush
end

#view_attachments ⇒ Object 



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# File 'lib/heathrow/ui/application.rb', line 3228

def view_attachments
  msg = current_message
  return unless msg
  return set_feedback("Select a message first", 245, 2) if header_message?(msg)

  # Load full message if needed (use numeric id only)
  msg_id = msg['id']
  if msg_id && msg_id.is_a?(Integer) && !msg.key?('attachments')
    full = @db.get_message(msg_id)
    msg.merge!(full) if full
  end

  attachments = msg['attachments']
  unless attachments.is_a?(Array) && !attachments.empty?
    set_feedback("No attachments", 226, 2)
    return
  end

  maildir_file = msg.dig('metadata', 'maildir_file') || msg.dig('metadata', :maildir_file)
  unless maildir_file && File.exist?(maildir_file.to_s)
    set_feedback("Source mail file not found", 196, 2)
    return
  end

  # Interactive attachment browser in right pane
  att_index = 0
  att_tagged = Set.new

  render_attachment_list(attachments, att_index, att_tagged)
  @panes[:bottom].text = " j/k:Navigate  t:Tag  T:Tag all  o:Open  s:Save  ESC:Back".fg(245)
  @panes[:bottom].refresh

  loop do
    chr = getchr
    case chr
    when 'j', 'DOWN'
      att_index = (att_index + 1) % attachments.size
      render_attachment_list(attachments, att_index, att_tagged)
    when 'k', 'UP'
      att_index = (att_index - 1) % attachments.size
      render_attachment_list(attachments, att_index, att_tagged)
    when 't'
      if att_tagged.include?(att_index)
        att_tagged.delete(att_index)
      else
        att_tagged.add(att_index)
      end
      att_index = (att_index + 1) % attachments.size
      render_attachment_list(attachments, att_index, att_tagged)
    when 'T'
      # Toggle all
      if att_tagged.size == attachments.size
        att_tagged.clear
      else
        attachments.each_index { |i| att_tagged.add(i) }
      end
      render_attachment_list(attachments, att_index, att_tagged)
    when 'o', 'ENTER'
      targets = att_tagged.empty? ? [att_index] : att_tagged.to_a.sort
      open_attachments(maildir_file, attachments, targets)
      render_attachment_list(attachments, att_index, att_tagged)
      @panes[:bottom].text = " j/k:Navigate  t:Tag  T:Tag all  o:Open  s:Save  ESC:Back".fg(245)
      @panes[:bottom].refresh
    when 's'
      targets = att_tagged.empty? ? [att_index] : att_tagged.to_a.sort
      save_attachments(maildir_file, attachments, targets)
      render_attachment_list(attachments, att_index, att_tagged)
    when 'q', 'ESC', "\e", 'h', 'LEFT'
      break
    end
  end

  @panes[:right].content_update = true
  render_all
end