Create app.py

app.py

@@ -0,0 +1,42 @@
+from fastapi import FastAPI, Request, HTTPException
+from linebot import LineBotApi, WebhookHandler
+from linebot.exceptions import InvalidSignatureError
+from linebot.models import MessageEvent, TextMessage, TextSendMessage
+
+import os
+
+# 設定 LINE Channel Access Token 和 Channel Secret
+LINE_CHANNEL_ACCESS_TOKEN = os.getenv("LINE_CHANNEL_ACCESS_TOKEN")
+LINE_CHANNEL_SECRET = os.getenv("LINE_CHANNEL_SECRET")
+
+line_bot_api = LineBotApi(LINE_CHANNEL_ACCESS_TOKEN)
+handler = WebhookHandler(LINE_CHANNEL_SECRET)
+
+app = FastAPI()
+
+# Webhook endpoint for LINE messages
+@app.post("/callback")
+async def callback(request: Request):
+    signature = request.headers['X-Line-Signature']
+    body = await request.body()
+
+    try:
+        handler.handle(body.decode('utf-8'), signature)
+    except InvalidSignatureError:
+        raise HTTPException(status_code=400, detail="Invalid signature")
+
+    return 'OK'
+
+# 處理文字訊息的事件
+@handler.add(MessageEvent, message=TextMessage)
+def handle_text_message(event):
+    # 回應同樣的訊息給使用者
+    reply_text = event.message.text
+    line_bot_api.reply_message(
+        event.reply_token,
+        TextSendMessage(text=reply_text)
+    )
+
+if __name__ == "__main__":
+    import uvicorn
+    uvicorn.run(app, host="0.0.0.0", port=8000)