Module: Brainiac::Plugins::Discord::Message

Defined in:
lib/brainiac/plugins/discord/message.rb

Overview

Discord message handler — the main dispatch function.

Handles incoming messages: authorization, cross-agent routing, project detection, worktree management, prompt building, agent spawning, and response monitoring.

Class Method Summary collapse

Class Method Details

.handle(message, agent_key, bot_token, bot_user_id) ⇒ Object 



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# File 'lib/brainiac/plugins/discord/message.rb', line 15

def handle(message, agent_key, bot_token, bot_user_id)
  channel_id = message["channel_id"]
  message_id = message["id"]
  author = message["author"]
  content = message["content"] || ""
  is_bot = !author["bot"].nil?

  sender_agent_key = Gateway.detect_sender_agent(author, agent_key) if is_bot
  return if is_bot && !sender_agent_key

  mentions = message["mentions"] || []
  mentioned = mentions.any? { |m| m["id"].to_s == bot_user_id.to_s } ||
              content.match?(/<@!?#{Regexp.escape(bot_user_id.to_s)}>/) ||
              role_mentioned?(message, content, agent_key)
  return if sender_agent_key && !validate_cross_agent_dispatch(sender_agent_key, agent_key, mentioned, content, channel_id)

  is_reply_to_bot, referenced_message = detect_reply_to_bot(message, channel_id, mentioned, bot_token, bot_user_id)
  channel_info, is_thread, is_dm, in_own_thread = detect_channel_context(message, channel_id, mentioned, is_reply_to_bot, bot_token,
                                                                         bot_user_id)
  return if should_stand_down?(in_own_thread, mentioned, is_reply_to_bot, is_bot, agent_key, mentions, content)

  is_thread_participant = !mentioned && !in_own_thread && is_thread &&
                          thread_participant?(channel_id, message_id, bot_user_id, bot_token)
  return unless mentioned || in_own_thread || is_dm || is_reply_to_bot || is_thread_participant

  # When another agent is explicitly mentioned, thread participants who weren't
  # addressed should not activate — the message was directed at someone specific.
  return if is_thread_participant && other_agent_mentioned?(mentions, content, agent_key)

  record_human_comment("discord-#{channel_id}") unless is_bot

  clean_content = prepare_content(content, bot_user_id)
  attachment_paths = download_attachments(message, message_id, agent_key)
  clean_content = append_attachments(clean_content, attachment_paths)
  return if clean_content.empty? && attachment_paths.empty?

  reply_context = build_reply_context(referenced_message)
  discord_user = author["username"]
  discord_user_id = author["id"]
  agent_name = agent_display_name(agent_key) || agent_key.capitalize

  channel_info, is_thread, is_dm = ensure_channel_info(channel_info, is_thread, is_dm, channel_id, bot_token)
  parent_channel_id = is_thread ? channel_info&.dig("parent_id") || channel_id : channel_id
  channel_history = Api.fetch_channel_history(channel_id, message_id, token: bot_token, limit: is_thread ? 25 : 10)
  location = is_dm ? "DM" : (is_thread ? "thread" : "channel") # rubocop:disable Style/NestedTernaryOperator
  LOG.info "[Discord:#{agent_name}] Message from #{discord_user} in #{location} #{channel_id}: #{clean_content[0..100]}" if defined?(LOG)

  reload_projects!
  reload_agent_registry!
  Config.reload!
  return unless authorize_user(discord_user, discord_user_id, message, channel_id, message_id, agent_name, bot_token)

  tags = parse_inline_tags(clean_content)
  project_key, project_config = resolve_project(tags[:project], parent_channel_id, agent_name, channel_id, message_id, bot_token)

  # Thread owners bypass intent checking ONLY when they're the sole agent in
  # the thread (1-on-1 with the human). If other agents have participated,
  # everyone goes through intent checking unless explicitly @mentioned.
  solo_thread_owner = in_own_thread && solo_in_thread?(channel_history, agent_key)
  if in_own_thread && defined?(LOG)
    LOG.info "[Discord:#{agent_name}] Own thread — #{solo_thread_owner ? "solo (bypassing intent)" : "multi-agent (intent check applies)"}"
  end

  route_dispatch(
    agent_key: agent_key, agent_name: agent_name, bot_token: bot_token, is_bot: is_bot,
    channel_id: channel_id, message_id: message_id, message: message,
    clean_content: clean_content, clean_content_for_prompt: tags[:clean_text],
    chat_mode: tags[:chat_mode], is_thread: is_thread, is_dm: is_dm,
    channel_info: channel_info, parent_channel_id: parent_channel_id,
    discord_user: discord_user, reply_context: reply_context,
    channel_history: channel_history, project_key: project_key,
    project_config: project_config, attachment_paths: attachment_paths,
    directly_addressed: mentioned || is_reply_to_bot || is_dm || solo_thread_owner
  )
end