feat: Improve reply suggestions using help center articles (#9026)

enterprise/lib/enterprise/integrations/openai_processor_service.rb

@@ -3,6 +3,24 @@ module Enterprise::Integrations::OpenaiProcessorService
                            make_friendly make_formal simplify].freeze
   CACHEABLE_EVENTS = %w[label_suggestion].freeze
 
+  def reply_suggestion_message
+    return super unless conversation.inbox.response_bot_enabled?
+
+    messages = conversation_messages(in_array_format: true)
+    last_message = messages.pop
+
+    robin_response = ChatGpt.new(
+      Enterprise::MessageTemplates::ResponseBotService.response_sections(last_message[:content], conversation.inbox)
+    ).generate_response(
+      last_message[:content], messages, last_message[:role]
+    )
+    message_content = robin_response['response']
+    if robin_response['context_ids'].present?
+      message_content += Enterprise::MessageTemplates::ResponseBotService.generate_sources_section(robin_response['context_ids'])
+    end
+    message_content
+  end
+
   def label_suggestion_message
     payload = label_suggestion_body
     return nil if payload.blank?
@@ -19,8 +37,6 @@ module Enterprise::Integrations::OpenaiProcessorService
   private
 
   def labels_with_messages
-    conversation = find_conversation
-
     return nil unless valid_conversation?(conversation)
 
     labels = hook.account.labels.pluck(:title).join(', ')