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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)
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