Class: Nanobot::Channels::Email

Inherits:
BaseChannel show all
Defined in:
lib/nanobot/channels/email.rb

Overview

Email channel using IMAP polling for inbound messages and SMTP for replies. Requires explicit consent_granted=true and optional auto_reply_enabled flag.

Constant Summary collapse

MAX_PROCESSED_UIDS =

Maximum number of tracked UIDs before clearing to prevent unbounded growth.

100_000

Instance Attribute Summary

Attributes inherited from BaseChannel

#bus, #config, #logger, #name

Instance Method Summary collapse

Methods inherited from BaseChannel

#allowed?, #initialize, #running?

Constructor Details

This class inherits a constructor from Nanobot::Channels::BaseChannel

Instance Method Details

#send(message) ⇒ Object

Send an email reply via SMTP, respecting consent and auto-reply settings.

Parameters:



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# File 'lib/nanobot/channels/email.rb', line 66

def send(message)
  unless @config.consent_granted
    @logger.warn 'Skip email send: consent_granted is false'
    return
  end

  force_send = (message.metadata || {})['force_send']
  unless @config.auto_reply_enabled || force_send
    @logger.info 'Skip automatic email reply: auto_reply_enabled is false'
    return
  end

  to_addr = message.chat_id.to_s.strip
  return if to_addr.empty?

  base_subject = @last_subject_by_chat[to_addr] || 'nanobot reply'
  subject = reply_subject(base_subject)

  mail = ::Mail.new
  mail.to = to_addr
  mail.subject = subject
  mail.body = message.content || ''
  mail.from = @config.from_address || @config.smtp_username

  if (ref = @last_message_id_by_chat[to_addr])
    mail['In-Reply-To'] = ref
    mail['References'] = ref
  end

  smtp_send(mail)
end

#start ⇒ Object 



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# File 'lib/nanobot/channels/email.rb', line 20

def start
  unless @config.consent_granted
    @logger.warn 'Email channel disabled: consent_granted is false. ' \
                 'Set channels.email.consent_granted=true after explicit user permission.'
    return
  end

  return unless valid_config?

  @running = true
  @processed_uids = Set.new
  @last_subject_by_chat = {}
  @last_message_id_by_chat = {}

  poll_seconds = [@config.poll_interval_seconds, 5].max

  @logger.info "Starting Email channel (IMAP polling every #{poll_seconds}s)..."

  while @running
    begin
      fetch_new_messages.each do |item|
        sender = item[:sender]
        @last_subject_by_chat[sender] = item[:subject] if item[:subject]
        @last_message_id_by_chat[sender] = item[:message_id] if item[:message_id]

        handle_message(
          sender_id: sender,
          chat_id: sender,
          content: item[:content],
          metadata: item[:metadata] || {}
        )
      end
    rescue StandardError => e
      @logger.error "Email polling error: #{e.message}"
    end

    sleep poll_seconds
  end
end

#stop ⇒ Object 



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# File 'lib/nanobot/channels/email.rb', line 60

def stop
  @running = false
end