FEATURE: Add a new setting to disable the automatic topic title feature of the AI bot

Author: nvh0412

config/locales/server.en.yml

@@ -87,6 +87,7 @@ en:
 
     ai_bot_enabled: "Enable the AI Bot module."
     ai_bot_enable_chat_warning: "Display a warning when PM chat is initiated. Can be overriden by editing the translation string: discourse_ai.ai_bot.pm_warning"
+    ai_bot_automatic_topic_title: "Automatically set the topic titles based on post contents."
     ai_bot_allowed_groups: "When the GPT Bot has access to the PM, it will reply to members of these groups."
     ai_bot_debugging_allowed_groups: "Allow these groups to see a debug button on posts which displays the raw AI request and response"
     ai_bot_public_sharing_allowed_groups: "Allow these groups to share AI personal messages with the public via a unique publicly available link. Note: if your site requires login, shares will also require login."

config/settings.yml

@@ -393,6 +393,8 @@ discourse_ai:
   ai_bot_enable_chat_warning:
     default: false
     client: true
+  ai_bot_automatic_topic_title:
+    default: true
   ai_bot_debugging_allowed_groups:
     type: group_list
     list_type: compact

lib/ai_bot/playground.rb

@@ -487,7 +487,7 @@ def reply_to(post)
         reply_post
       ensure
         publish_final_update(reply_post) if stream_reply
-        if reply_post && post.post_number == 1 && post.topic.private_message?
+        if reply_post && can_automatically_update_title?(post)
           title_playground(reply_post)
         end
       end
@@ -503,6 +503,14 @@ def available_bot_user_ids
 
       private
 
+      def can_automatically_update_title?(post)
+        return false if !SiteSetting.ai_bot_automatic_topic_title
+        return false if !post.topic.private_message?
+        return false if post.post_number != 1
+
+        true
+      end
+
       def available_bot_users
         @available_bots ||=
           User.joins("INNER JOIN llm_models llm ON llm.user_id = users.id").where(active: true)

spec/lib/modules/ai_bot/playground_spec.rb

@@ -805,6 +805,72 @@
       expect(custom_prompt.last.last).to eq(bot_user.username)
     end
 
+    context "with title_playground" do
+      let(:playground) { DiscourseAi::AiBot::Playground.new(bot) }
+
+      before do
+        allow(playground).to receive(:title_playground)
+      end
+
+      context "when the ai_bot_automatic_topic_title config is disabled" do
+        before { SiteSetting.ai_bot_automatic_topic_title = false }
+
+        it "does not update the title" do
+          response = "This is a suggested title"
+
+          DiscourseAi::Completions::Llm.with_prepared_responses([response]) do
+            playground.reply_to(first_post)
+          end
+
+          expect(playground).not_to have_received(:title_playground)
+        end
+      end
+
+      context "when the message in the topic is not the private message" do
+        before { SiteSetting.ai_bot_automatic_topic_title = true }
+
+        it "does not update the title" do
+          allow(first_post.topic).to receive(:private_message?).and_return(false)
+
+          response = "This is a suggested title"
+
+          DiscourseAi::Completions::Llm.with_prepared_responses([response]) do
+            playground.reply_to(first_post)
+          end
+
+          expect(playground).not_to have_received(:title_playground)
+        end
+      end
+
+      context "when the post is not the first one in the topic" do
+        before { SiteSetting.ai_bot_automatic_topic_title = true }
+
+        it "does not update the title" do
+          response = "This is a suggested title"
+
+          DiscourseAi::Completions::Llm.with_prepared_responses([response]) do
+            playground.reply_to(second_post)
+          end
+
+          expect(playground).not_to have_received(:title_playground)
+        end
+      end
+
+      context "when the AI bot can automatically update the title" do
+        before { SiteSetting.ai_bot_automatic_topic_title = true }
+
+        it "updates the title using bot suggestions" do
+          response = "This is a suggested title"
+
+          DiscourseAi::Completions::Llm.with_prepared_responses([response]) do
+            playground.reply_to(first_post)
+          end
+
+          expect(playground).to have_received(:title_playground)
+        end
+      end
+    end
+
     context "with Dall E bot" do
       before { SiteSetting.ai_openai_api_key = "123" }