fix: decouple thread summary update (janhq#1994)

web/containers/Providers/EventHandler.tsx

@@ -14,6 +14,7 @@ import {
   MessageEvent,
   MessageRequestType,
   ModelEvent,
+  Thread,
 } from '@janhq/core'
 import { useAtomValue, useSetAtom } from 'jotai'
 import { ulid } from 'ulid'
@@ -80,39 +81,7 @@ export default function EventHandler({ children }: { children: ReactNode }) {
 
   const onNewMessageResponse = useCallback(
     (message: ThreadMessage) => {
-      const thread = threadsRef.current?.find((e) => e.id == message.thread_id)
-      // If this is the first ever prompt in the thread
-      if (thread && thread.title.trim() == 'New Thread') {
-        // This is the first time message comes in on a new thread
-        //  Summarize the first message, and make that the title of the Thread
-        // 1. Get the summary of the first prompt using whatever engine user is currently using
-        const firstPrompt = messagesRef?.current[0].content[0].text.value.trim()
-        const summarizeFirstPrompt =
-          'Summarize "' + firstPrompt + '" in 5 words as a title'
-
-        // Prompt: Given this query from user {query}, return to me the summary in 5 words as the title
-        const msgId = ulid()
-        const messages: ChatCompletionMessage[] = [
-          {
-            role: ChatCompletionRole.User,
-            content: summarizeFirstPrompt,
-          } as ChatCompletionMessage,
-        ]
-
-        const firstPromptRequest: MessageRequest = {
-          id: msgId,
-          threadId: message.thread_id,
-          type: MessageRequestType.Summary,
-          messages,
-          model: activeModelRef?.current,
-        }
-
-        // 2. Update the title with the result of the inference
-        //      the title will be updated as part of the `EventName.OnFirstPromptUpdate`
-        events.emit(MessageEvent.OnMessageSent, firstPromptRequest)
-      }
-
-      if (message.type !== MessageRequestType.Summary) {
+      if (message.type === MessageRequestType.Thread) {
         addNewMessage(message)
       }
     },
@@ -158,7 +127,34 @@ export default function EventHandler({ children }: { children: ReactNode }) {
     [setStateModel, setQueuedMessage, setLoadModelError]
   )
 
-  const onMessageResponseUpdate = useCallback(
+  const updateThreadTitle = useCallback(
+    (message: ThreadMessage) => {
+      // Update only when it's finished
+      if (message.status === MessageStatus.Pending) {
+        return
+      }
+
+      const thread = threadsRef.current?.find((e) => e.id == message.thread_id)
+      const messageContent = message.content[0]?.text?.value
+      if (thread && messageContent) {
+        // Update the Thread title with the response of the inference on the 1st prompt
+        updateThread({
+          ...thread,
+          title: messageContent,
+          metadata: thread.metadata,
+        })
+
+        extensionManager
+          .get<ConversationalExtension>(ExtensionTypeEnum.Conversational)
+          ?.saveThread({
+            ...thread,
+          })
+      }
+    },
+    [updateThread]
+  )
+
+  const updateThreadMessage = useCallback(
     (message: ThreadMessage) => {
       updateMessage(
         message.id,
@@ -186,11 +182,6 @@ export default function EventHandler({ children }: { children: ReactNode }) {
           ...(messageContent && { lastMessage: messageContent }),
         }
 
-        // Update the Thread title with the response of the inference on the 1st prompt
-        if (message.type === MessageRequestType.Summary) {
-          thread.title = messageContent
-        }
-
         updateThread({
           ...thread,
           metadata,
@@ -204,16 +195,79 @@ export default function EventHandler({ children }: { children: ReactNode }) {
           })
 
         // If this is not the summary of the Thread, don't need to add it to the Thread
-        if (message.type !== MessageRequestType.Summary) {
-          extensionManager
-            .get<ConversationalExtension>(ExtensionTypeEnum.Conversational)
-            ?.addNewMessage(message)
-        }
+        extensionManager
+          .get<ConversationalExtension>(ExtensionTypeEnum.Conversational)
+          ?.addNewMessage(message)
+
+        // Attempt to generate the title of the Thread when needed
+        generateThreadTitle(message, thread)
       }
     },
-    [updateMessage, updateThreadWaiting, setIsGeneratingResponse, updateThread]
+    [setIsGeneratingResponse, updateMessage, updateThread, updateThreadWaiting]
   )
 
+  const onMessageResponseUpdate = useCallback(
+    (message: ThreadMessage) => {
+      switch (message.type) {
+        case MessageRequestType.Summary:
+          updateThreadTitle(message)
+          break
+        default:
+          updateThreadMessage(message)
+      }
+    },
+    [updateThreadMessage, updateThreadTitle]
+  )
+
+  const generateThreadTitle = (message: ThreadMessage, thread: Thread) => {
+    // If this is the first ever prompt in the thread
+    if (
+      thread &&
+      thread.title?.trim() === 'New Thread' &&
+      activeModelRef.current
+    ) {
+      // This is the first time message comes in on a new thread
+      //  Summarize the first message, and make that the title of the Thread
+      // 1. Get the summary of the first prompt using whatever engine user is currently using
+      const threadMessages = messagesRef?.current
+      const summarizeFirstPrompt =
+        'Summarize the conversation above in 5 words as a title'
+
+      // Prompt: Given this query from user {query}, return to me the summary in 5 words as the title
+      const msgId = ulid()
+      const messages: ChatCompletionMessage[] = [
+        ...threadMessages.map((msg) => {
+          return {
+            role: msg.role,
+            content: msg.content[0]?.text.value,
+          }
+        }),
+        {
+          role: ChatCompletionRole.User,
+          content: summarizeFirstPrompt,
+        } as ChatCompletionMessage,
+      ]
+
+      const firstPromptRequest: MessageRequest = {
+        id: msgId,
+        threadId: message.thread_id,
+        type: MessageRequestType.Summary,
+        messages,
+        model: {
+          ...activeModelRef.current,
+          parameters: {
+            stream: false,
+          },
+        },
+      }
+
+      // 2. Update the title with the result of the inference
+      setTimeout(() => {
+        events.emit(MessageEvent.OnMessageSent, firstPromptRequest)
+      }, 1000)
+    }
+  }
+
   useEffect(() => {
     console.log('Registering events')
     if (window.core?.events) {