feat: Add support for realtime-events in copilot-threads and copilot-messages (#11557)

- Add API support for creating a thread
- Add API support for creating a message
- Remove uuid from thread (no longer required, we will use existing
websocket connection to send messages)
- Update message_type to a column (user, assistant, assistant_thinking)

enterprise/app/controllers/api/v1/accounts/captain/copilot_messages_controller.rb

@@ -1,21 +1,28 @@
 class Api::V1::Accounts::Captain::CopilotMessagesController < Api::V1::Accounts::BaseController
-  before_action :current_account
-  before_action -> { check_authorization(Captain::Assistant) }
   before_action :set_copilot_thread
 
   def index
     @copilot_messages = @copilot_thread
                         .copilot_messages
+                        .includes(:copilot_thread)
                         .order(created_at: :asc)
                         .page(permitted_params[:page] || 1)
                         .per(1000)
   end
 
+  def create
+    @copilot_message = @copilot_thread.copilot_messages.create!(
+      message: params[:message],
+      message_type: :user
+    )
+  end
+
   private
 
   def set_copilot_thread
     @copilot_thread = Current.account.copilot_threads.find_by!(
-      uuid: params[:copilot_thread_id], user_id: Current.user.id
+      id: params[:copilot_thread_id],
+      user: Current.user
     )
   end
 

enterprise/app/controllers/api/v1/accounts/captain/copilot_threads_controller.rb

@@ -1,18 +1,41 @@
 class Api::V1::Accounts::Captain::CopilotThreadsController < Api::V1::Accounts::BaseController
-  before_action :current_account
-  before_action -> { check_authorization(Captain::Assistant) }
+  before_action :ensure_message, only: :create
 
   def index
     @copilot_threads = Current.account.copilot_threads
                               .where(user_id: Current.user.id)
-                              .includes(:user)
+                              .includes(:user, :assistant)
                               .order(created_at: :desc)
                               .page(permitted_params[:page] || 1)
                               .per(5)
   end
 
+  def create
+    ActiveRecord::Base.transaction do
+      @copilot_thread = Current.account.copilot_threads.create!(
+        title: copilot_thread_params[:message],
+        user: Current.user,
+        assistant: assistant
+      )
+
+      @copilot_thread.copilot_messages.create!(message_type: :user, message: copilot_thread_params[:message])
+    end
+  end
+
   private
 
+  def ensure_message
+    return render_could_not_create_error('Message is required') if copilot_thread_params[:message].blank?
+  end
+
+  def assistant
+    Current.account.captain_assistants.find(copilot_thread_params[:assistant_id])
+  end
+
+  def copilot_thread_params
+    params.permit(:message, :assistant_id)
+  end
+
   def permitted_params
     params.permit(:page)
   end