From a34770538a976291215b51acd9215718cc39a1dc Mon Sep 17 00:00:00 2001
From: Bryan Xu <35763689+bryanpalau@users.noreply.github.com>
Date: Sat, 19 Oct 2024 16:41:26 +0800
Subject: [PATCH 1/2] Update index.js

gpt-4o
---
 config/index.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/config/index.js b/config/index.js
index e8fc6c13..c9828f04 100644
--- a/config/index.js
+++ b/config/index.js
@@ -35,7 +35,7 @@ const config = Object.freeze({
   OPENAI_TIMEOUT: env.OPENAI_TIMEOUT || env.APP_API_TIMEOUT,
   OPENAI_API_KEY: env.OPENAI_API_KEY || null,
   OPENAI_BASE_URL: env.OPENAI_BASE_URL || 'https://api.openai.com',
-  OPENAI_COMPLETION_MODEL: env.OPENAI_COMPLETION_MODEL || 'gpt-3.5-turbo',
+  OPENAI_COMPLETION_MODEL: env.OPENAI_COMPLETION_MODEL || 'gpt-4o',
   OPENAI_COMPLETION_TEMPERATURE: Number(env.OPENAI_COMPLETION_TEMPERATURE) || 1,
   OPENAI_COMPLETION_MAX_TOKENS: Number(env.OPENAI_COMPLETION_MAX_TOKENS) || 64,
   OPENAI_COMPLETION_FREQUENCY_PENALTY: Number(env.OPENAI_COMPLETION_FREQUENCY_PENALTY) || 0,

From fae644d2854d52085b5745188cd0ee7c04b85133 Mon Sep 17 00:00:00 2001
From: Bryan Xu <35763689+bryanpalau@users.noreply.github.com>
Date: Sun, 20 Oct 2024 22:58:39 +0800
Subject: [PATCH 2/2] Update index.js

---
 api/index.js | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 53 insertions(+), 1 deletion(-)

diff --git a/api/index.js b/api/index.js
index 75da24b4..1214abf8 100644
--- a/api/index.js
+++ b/api/index.js
@@ -4,15 +4,62 @@ import config from '../config/index.js';
 import { validateLineSignature } from '../middleware/index.js';
 import storage from '../storage/index.js';
 import { fetchVersion, getVersion } from '../utils/index.js';
+import openai from 'openai';  // Step 1: Import the OpenAI SDK
 
 const app = express();
 
+// Set OpenAI API key from environment variables
+openai.apiKey = process.env.OPENAI_API_KEY;
+
 app.use(express.json({
   verify: (req, res, buf) => {
     req.rawBody = buf.toString();
   },
 }));
 
+// Function to get a response from ChatGPT (OpenAI)
+const getChatGPTResponse = async (userMessage) => {
+  const response = await openai.Completion.create({
+    model: 'gpt-4',  // You can switch this to any available model
+    prompt: userMessage,
+    max_tokens: 200,  // Adjust as needed
+  });
+
+  return response.choices[0].text.trim();
+};
+
+// Modified version of handleEvents function to process LINE messages and integrate with ChatGPT
+const handleLineEvents = async (events) => {
+  for (const event of events) {
+    if (event.type === 'message' && event.message.type === 'text') {
+      const userMessage = event.message.text;
+      const replyToken = event.replyToken;
+
+      // Step 2: Get response from ChatGPT (OpenAI)
+      const chatGPTResponse = await getChatGPTResponse(userMessage);
+
+      // Step 3: Send reply to LINE user
+      await replyToLine(replyToken, chatGPTResponse);
+    }
+  }
+};
+
+// Function to reply to LINE
+const replyToLine = async (replyToken, message) => {
+  const axios = require('axios');
+  const lineEndpoint = 'https://api.line.me/v2/bot/message/reply';
+
+  await axios.post(lineEndpoint, {
+    replyToken: replyToken,
+    messages: [{ type: 'text', text: message }]
+  }, {
+    headers: {
+      'Content-Type': 'application/json',
+      'Authorization': `Bearer ${process.env.LINE_CHANNEL_ACCESS_TOKEN}`
+    }
+  });
+};
+
 app.get('/', async (req, res) => {
   if (config.APP_URL) {
     res.redirect(config.APP_URL);
@@ -23,15 +70,20 @@ app.get('/', async (req, res) => {
   res.status(200).send({ status: 'OK', currentVersion, latestVersion });
 });
 
+// Main webhook endpoint for LINE messages
 app.post(config.APP_WEBHOOK_PATH, validateLineSignature, async (req, res) => {
   try {
     await storage.initialize();
-    await handleEvents(req.body.events);
+    
+    // Step 4: Call handleLineEvents instead of original handleEvents
+    await handleLineEvents(req.body.events);
+
     res.sendStatus(200);
   } catch (err) {
     console.error(err.message);
     res.sendStatus(500);
   }
+  
   if (config.APP_DEBUG) printPrompts();
 });