Method: Client#retrieve_emails

Defined in:
lib/client.rb

#retrieve_emails(imap, search_condition, folder, &process_email_block) ⇒ Object

retrieve_emails

retrieve any mail from a folder, followin specified serach condition for any mail retrieved call a specified block



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# File 'lib/client.rb', line 75

def retrieve_emails(imap, search_condition, folder, &process_email_block)

  # examine will read email and sets flags unread
  # https://stackoverflow.com/questions/16516464/read-gmail-xoauth-mails-without-marking-it-read
  imap.examine folder

  message_ids = imap.uid_search(search_condition)

  meta_dir = @download_path + 'meta/'
  message_ids_saved = File.directory?(meta_dir) ? (Dir.entries meta_dir).map { |i| i.split("_").first.to_i } : []

  message_ids = message_ids - message_ids_saved

  if @debug
    if message_ids.empty?
      @logger.info "No new emails found..."
    elsif message_ids_saved.any?
      @logger.info "Found emails saved in your #{@client_type}. Downloading only #{message_ids.count} new emails..."
    else
      @logger.info "Downloading #{message_ids.count} emails."
    end
  end

  message_ids.each_with_index do |message_id, i|
    # fetch all the email contents
    data = imap.uid_fetch(message_id, "RFC822")
    data.each do |d|
      msg = d.attr['RFC822']
      # instantiate a Mail object to avoid further IMAP parameters nightmares
      mail = Mail.read_from_string msg

      # call the block with mail object as param
      process_email_block.call mail, i, i == message_ids.length-1, message_id

      # mark as read
      if @mark_as_read
        imap.store(message_id, "+FLAGS", [:Seen])
      end
    end
  end
end