Restructure omni services and add Chatwoot research snapshot

research/chatwoot/enterprise/app/services/captain/copilot/chat_service.rb

@@ -0,0 +1,127 @@
+class Captain::Copilot::ChatService < Llm::BaseAiService
+  include Captain::ChatHelper
+
+  attr_reader :assistant, :account, :user, :copilot_thread, :previous_history, :messages
+
+  def initialize(assistant, config)
+    super()
+
+    @assistant = assistant
+    @account = assistant.account
+    @user = nil
+    @copilot_thread = nil
+    @previous_history = []
+    @conversation_id = config[:conversation_id]
+
+    setup_user(config)
+    setup_message_history(config)
+    @tools = build_tools
+    @messages = build_messages(config)
+  end
+
+  def generate_response(input)
+    @messages << { role: 'user', content: input } if input.present?
+    response = request_chat_completion
+
+    Rails.logger.debug { "#{self.class.name} Assistant: #{@assistant.id}, Received response #{response}" }
+    Rails.logger.info(
+      "#{self.class.name} Assistant: #{@assistant.id}, Incrementing response usage for account #{@account.id}"
+    )
+    @account.increment_response_usage
+
+    response
+  end
+
+  private
+
+  def setup_user(config)
+    @user = @account.users.find_by(id: config[:user_id]) if config[:user_id].present?
+  end
+
+  def build_messages(config)
+    messages= [system_message]
+    messages << account_id_context
+    messages += @previous_history if @previous_history.present?
+    messages += current_viewing_history(config[:conversation_id]) if config[:conversation_id].present?
+    messages
+  end
+
+  def setup_message_history(config)
+    Rails.logger.info(
+      "#{self.class.name} Assistant: #{@assistant.id}, Previous History: #{config[:previous_history]&.length || 0}, Language: #{config[:language]}"
+    )
+
+    @copilot_thread = @account.copilot_threads.find_by(id: config[:copilot_thread_id]) if config[:copilot_thread_id].present?
+    @previous_history = if @copilot_thread.present?
+                          @copilot_thread.previous_history
+                        else
+                          config[:previous_history].presence || []
+                        end
+  end
+
+  def build_tools
+    tools = []
+
+    tools << Captain::Tools::SearchDocumentationService.new(@assistant, user: @user)
+    tools << Captain::Tools::Copilot::GetConversationService.new(@assistant, user: @user)
+    tools << Captain::Tools::Copilot::SearchConversationsService.new(@assistant, user: @user)
+    tools << Captain::Tools::Copilot::GetContactService.new(@assistant, user: @user)
+    tools << Captain::Tools::Copilot::GetArticleService.new(@assistant, user: @user)
+    tools << Captain::Tools::Copilot::SearchArticlesService.new(@assistant, user: @user)
+    tools << Captain::Tools::Copilot::SearchContactsService.new(@assistant, user: @user)
+    tools << Captain::Tools::Copilot::SearchLinearIssuesService.new(@assistant, user: @user)
+
+    tools.select(&:active?)
+  end
+
+  def system_message
+    {
+      role: 'system',
+      content: Captain::Llm::SystemPromptsService.copilot_response_generator(
+        @assistant.config['product_name'],
+        tools_summary,
+        @assistant.config
+      )
+    }
+  end
+
+  def tools_summary
+    @tools.map { |tool| "- #{tool.class.name}: #{tool.class.description}" }.join("\n")
+  end
+
+  def account_id_context
+    {
+      role: 'system',
+      content: "The current account id is #{@account.id}. The account is using #{@account.locale_english_name} as the language."
+    }
+  end
+
+  def current_viewing_history(conversation_id)
+    conversation = @account.conversations.find_by(display_id: conversation_id)
+    return [] unless conversation
+
+    Rails.logger.info("#{self.class.name} Assistant: #{@assistant.id}, Setting viewing history for conversation_id=#{conversation_id}")
+    contact_id = conversation.contact_id
+    [{
+      role: 'system',
+      content: <<~HISTORY.strip
+        You are currently viewing the conversation with the following details:
+        Conversation ID: #{conversation_id}
+        Contact ID: #{contact_id}
+      HISTORY
+    }]
+  end
+
+  def persist_message(message, message_type = 'assistant')
+    return if @copilot_thread.blank?
+
+    @copilot_thread.copilot_messages.create!(
+      message: message,
+      message_type: message_type
+    )
+  end
+
+  def feature_name
+    'copilot'
+  end
+end