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Update main.py
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main.py
CHANGED
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@@ -4,205 +4,291 @@ import requests
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from bs4 import BeautifulSoup
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import google.generativeai as genai
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from fastapi import FastAPI, Request, Header, BackgroundTasks, HTTPException
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from fastapi.responses import FileResponse
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from linebot import LineBotApi, WebhookHandler
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from linebot.exceptions import InvalidSignatureError
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from linebot.models import MessageEvent, TextMessage, TextSendMessage, ImageSendMessage
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import
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from
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# --- 設定部分 ---
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app = FastAPI()
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# 初始化全域變數
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web_content = ""
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line_bot_api = None
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line_handler = None
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TARGET_URL = "https://huggingface.co/spaces/AlanRex/AITEST" # 要分享的網址
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SNAPSHOT_FILE = "snapshot.png" # 截圖存放位置
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# -------- 截圖功能 --------
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async def take_screenshot(url, path=SNAPSHOT_FILE):
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"""使用 pyppeteer 截圖指定網址"""
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browser = await launch(headless=True, args=["--no-sandbox"])
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page = await browser.newPage()
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await page.setViewport({"width": 1280, "height": 720})
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await page.goto(url, {"waitUntil": "networkidle2"})
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await page.screenshot({"path": path, "fullPage": True})
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await browser.close()
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@app.get("/snapshot")
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async def snapshot():
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"""提供截圖圖片 API"""
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if not os.path.exists(SNAPSHOT_FILE):
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await take_screenshot(TARGET_URL, SNAPSHOT_FILE)
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return FileResponse(SNAPSHOT_FILE, media_type="image/png")
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# -------- 初始化服務 --------
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def initialize_services():
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google_api_key = os.getenv("GOOGLE_API_KEY")
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if google_api_key:
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genai.configure(api_key=google_api_key)
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print("Google AI API 已設定")
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else:
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print("警告: 未找到 GOOGLE_API_KEY 環境變數")
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channel_access_token = os.getenv("CHANNEL_ACCESS_TOKEN")
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channel_secret = os.getenv("CHANNEL_SECRET")
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if channel_access_token and channel_secret:
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line_bot_api = LineBotApi(channel_access_token)
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line_handler = WebhookHandler(channel_secret)
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print("Line Bot API 已設定")
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else:
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print("警告: 未找到 Line Bot 環境變數")
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try:
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print(f"正在抓取網頁內容: {TARGET_URL}")
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response = requests.get(TARGET_URL, timeout=10)
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response.raise_for_status()
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print(f"成功抓取網頁內容,長度: {len(web_content)} 字元")
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except requests.exceptions.RequestException as e:
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print(f"Error fetching the URL: {e}")
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web_content = "無法取得網頁內容。"
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if google_api_key:
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try:
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model_name="gemini-2.5-flash",
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system_instruction=system_instruction
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)
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print("Gemini 模型已初始化")
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except Exception as e:
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print(f"初始化 Gemini 模型時出錯: {e}")
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@app.get("/")
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def root():
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return {
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"title": "Line Bot",
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"status": "running",
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"target_url": TARGET_URL,
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"web_content_loaded": len(web_content) > 0,
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"line_bot_configured": line_bot_api is not None,
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"gemini_configured":
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}
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@app.get("/health")
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def health_check():
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return {"status": "healthy"}
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@app.post("/webhook")
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async def webhook(
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if not line_handler:
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raise HTTPException(status_code=500, detail="Line Bot not configured")
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body = await request.body()
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try:
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background_tasks.add_task(
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line_handler.handle,
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body.decode("utf-8"),
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x_line_signature
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)
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except InvalidSignatureError:
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raise HTTPException(status_code=400, detail="Invalid signature")
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return "ok"
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# -------- 處理文字訊息 --------
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def setup_message_handler():
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if not line_handler:
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return
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@line_handler.add(MessageEvent, message=TextMessage)
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def handle_message(event):
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if event.message.type != "text":
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line_bot_api.reply_message(
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event.reply_token,
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TextSendMessage(text="請輸入文字訊息。")
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)
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return
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if
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)
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image_url = f"{os.getenv('SPACE_URL', 'http://localhost:7860')}/snapshot"
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line_bot_api.reply_message(
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event.reply_token,
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ImageSendMessage(
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original_content_url=image_url,
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preview_image_url=image_url
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)
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)
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except Exception as e:
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print(f"傳送圖片時出錯: {e}")
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line_bot_api.reply_message(
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event.reply_token,
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TextSendMessage(text=f"無法取得圖片,請直接訪問:{TARGET_URL}")
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)
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return
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# 如果沒有模型
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if not model:
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out = f"抱歉,AI 模型尚未準備好。\n您可以直接訪問:{TARGET_URL}"
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else:
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try:
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generation_config = genai.types.GenerationConfig(
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max_output_tokens=1000,
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temperature=0.2,
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top_p=0.8
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)
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completion = model.generate_content(
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contents=prompt,
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generation_config=generation_config
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)
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out = completion.text if completion and completion.text else "模型沒有生成答案!"
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except Exception as e:
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print(f"Gemini 執行出錯: {e}")
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out = f"Gemini 出錯,請稍後再試。\n您也可以直接訪問:{TARGET_URL}"
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try:
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line_bot_api.reply_message(
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event.reply_token,
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TextSendMessage(text=
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)
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except Exception as e:
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print(f"回覆訊息時出錯: {e}")
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@app.on_event("startup")
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async def startup_event():
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print("正在初始化服務...")
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initialize_services()
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setup_message_handler()
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print("服務初始化完成")
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if __name__ == "__main__":
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port = int(os.getenv("PORT", 7860))
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uvicorn.run("
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from bs4 import BeautifulSoup
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import google.generativeai as genai
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from fastapi import FastAPI, Request, Header, BackgroundTasks, HTTPException
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from linebot import LineBotApi, WebhookHandler
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from linebot.exceptions import InvalidSignatureError
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from linebot.models import MessageEvent, TextMessage, TextSendMessage, ImageSendMessage
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import tempfile
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import base64
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from PIL import Image
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import io
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# --- 設定部分 ---
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# 建立 FastAPI 應用程式
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app = FastAPI()
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# 初始化全域變數
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web_content = ""
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line_bot_api = None
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line_handler = None
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text_model = None
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image_model = None
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TARGET_URL = "https://huggingface.co/spaces/AlanRex/AITEST" # 要分享的網址
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def initialize_services():
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"""初始化各項服務"""
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global web_content, line_bot_api, line_handler, text_model, image_model
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# 設定 Google AI API 金鑰
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google_api_key = os.getenv("GOOGLE_API_KEY")
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if google_api_key:
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genai.configure(api_key=google_api_key)
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print("Google AI API 已設定")
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else:
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print("警告: 未找到 GOOGLE_API_KEY 環境變數")
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# 設定 Line Bot 的 API 金鑰和秘密金鑰
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channel_access_token = os.getenv("CHANNEL_ACCESS_TOKEN")
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channel_secret = os.getenv("CHANNEL_SECRET")
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if channel_access_token and channel_secret:
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line_bot_api = LineBotApi(channel_access_token)
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line_handler = WebhookHandler(channel_secret)
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print("Line Bot API 已設定")
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else:
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print("警告: 未找到 Line Bot 環境變數")
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try:
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# 使用 requests 取得網頁的 HTML 內容
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print(f"正在抓取網頁內容: {TARGET_URL}")
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response = requests.get(TARGET_URL, timeout=10)
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# 檢查是否成功取得網頁 (HTTP status code 200)
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response.raise_for_status()
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# 使用 BeautifulSoup 解析 HTML
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soup = BeautifulSoup(response.text, 'html.parser')
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# 取得網頁中所有的文字內容,並移除多餘的空白
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web_content = soup.get_text(separator=' ', strip=True)
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print(f"成功抓取網頁內容,長度: {len(web_content)} 字元")
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except requests.exceptions.RequestException as e:
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# 處理抓取網頁時發生的錯誤
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print(f"Error fetching the URL: {e}")
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web_content = "無法取得網頁內容,請檢查網址或連線。"
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# 設定生成文字的角色扮演與限制
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system_instruction = web_content + "\n\n您是一位問答助手。請僅限使用以上提供的內容來回答問題。請以簡潔明確的方式回答,並且能夠根據內容描述相關的視覺元素。"
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# 建立模型實例
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if google_api_key:
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try:
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# 文字生成模型
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text_model = genai.GenerativeModel(
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model_name="gemini-2.5-flash",
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system_instruction=system_instruction
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)
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# 圖片生成模型 (使用 Imagen 3)
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image_model = genai.GenerativeModel("imagen-3.0-generate-001")
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print("Gemini 模型已初始化")
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except Exception as e:
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print(f"初始化 Gemini 模型時出錯: {e}")
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text_model = None
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image_model = None
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def generate_image_from_content(user_prompt):
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"""根據網站內容和用戶提問生成圖片"""
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try:
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if not text_model or not image_model:
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return None, "AI 模型尚未準備就緒"
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# 先用文字模型分析內容並產生圖片描述
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analysis_prompt = f"""
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基於網站內容,請為以下問題產生一個適合的圖片描述(英文):
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問題:{user_prompt}
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請產生一個清楚、具體的圖片描述,描述應該:
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1. 與網站內容相關
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2. 適合視覺化呈現
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3. 使用英文描述
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4. 長度在50-100字之間
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只回傳圖片描述,不需要其他解釋。
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"""
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response = text_model.generate_content(analysis_prompt)
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if not response or not response.text:
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return None, "無法產生圖片描述"
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image_description = response.text.strip()
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print(f"圖片描述:{image_description}")
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# 使用圖片描述生成圖片
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image_response = image_model.generate_content([image_description])
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if not image_response or not image_response.candidates:
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return None, "無法生成圖片"
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+
# 取得生成的圖片
|
| 123 |
+
generated_image = image_response.candidates[0]
|
| 124 |
+
if hasattr(generated_image, 'content') and hasattr(generated_image.content, 'parts'):
|
| 125 |
+
image_part = generated_image.content.parts[0]
|
| 126 |
+
if hasattr(image_part, 'inline_data'):
|
| 127 |
+
image_data = image_part.inline_data.data
|
| 128 |
+
|
| 129 |
+
# 將 base64 數據轉換為圖片
|
| 130 |
+
image_bytes = base64.b64decode(image_data)
|
| 131 |
+
|
| 132 |
+
# 上傳圖片到臨時服務 (這裡需要實作圖片上傳邏輯)
|
| 133 |
+
# 由於 Line Bot 需要公開的圖片網址,您需要將圖片上傳到雲端服務
|
| 134 |
+
# 這裡提供一個範例架構
|
| 135 |
+
|
| 136 |
+
return image_bytes, "圖片生成成功"
|
| 137 |
+
|
| 138 |
+
return None, "圖片數據格式不正確"
|
| 139 |
+
|
| 140 |
+
except Exception as e:
|
| 141 |
+
print(f"生成圖片時出錯: {e}")
|
| 142 |
+
return None, f"生成圖片時出錯: {str(e)}"
|
| 143 |
+
|
| 144 |
+
def upload_image_to_cloud(image_bytes):
|
| 145 |
+
"""
|
| 146 |
+
上傳圖片到雲端服務並回傳公開網址
|
| 147 |
+
這裡需要實作實際的上傳邏輯,例如上傳到:
|
| 148 |
+
- Imgur
|
| 149 |
+
- Cloudinary
|
| 150 |
+
- AWS S3
|
| 151 |
+
- Google Cloud Storage
|
| 152 |
+
等服務
|
| 153 |
+
"""
|
| 154 |
+
# 範例:這裡應該實作實際的上傳邏輯
|
| 155 |
+
# 暫時回傳一個佔位網址
|
| 156 |
+
return "https://example.com/placeholder.jpg"
|
| 157 |
+
|
| 158 |
+
# 處理根路徑請求
|
| 159 |
@app.get("/")
|
| 160 |
def root():
|
| 161 |
return {
|
| 162 |
+
"title": "Line Bot with Image Generation",
|
| 163 |
"status": "running",
|
| 164 |
"target_url": TARGET_URL,
|
| 165 |
"web_content_loaded": len(web_content) > 0,
|
| 166 |
"line_bot_configured": line_bot_api is not None,
|
| 167 |
+
"gemini_configured": text_model is not None,
|
| 168 |
+
"image_generation_enabled": image_model is not None
|
| 169 |
}
|
| 170 |
|
| 171 |
+
# 健康檢查端點
|
| 172 |
@app.get("/health")
|
| 173 |
def health_check():
|
| 174 |
return {"status": "healthy"}
|
| 175 |
|
| 176 |
+
# 處理 Line Webhook 請求
|
| 177 |
@app.post("/webhook")
|
| 178 |
+
async def webhook(
|
| 179 |
+
request: Request,
|
| 180 |
+
background_tasks: BackgroundTasks,
|
| 181 |
+
x_line_signature=Header(None)
|
| 182 |
+
):
|
| 183 |
if not line_handler:
|
| 184 |
raise HTTPException(status_code=500, detail="Line Bot not configured")
|
| 185 |
+
|
| 186 |
+
# 取得請求內容
|
| 187 |
body = await request.body()
|
| 188 |
+
|
| 189 |
try:
|
| 190 |
+
# 將處理 Line 事件的任務加入背景工作
|
| 191 |
background_tasks.add_task(
|
| 192 |
line_handler.handle,
|
| 193 |
body.decode("utf-8"),
|
| 194 |
x_line_signature
|
| 195 |
)
|
| 196 |
except InvalidSignatureError:
|
| 197 |
+
# 處理無效的簽章錯誤
|
| 198 |
raise HTTPException(status_code=400, detail="Invalid signature")
|
| 199 |
+
|
| 200 |
return "ok"
|
| 201 |
|
| 202 |
+
# 處理文字訊息事件
|
|
|
|
| 203 |
def setup_message_handler():
|
| 204 |
+
"""設定訊息處理器"""
|
| 205 |
if not line_handler:
|
| 206 |
return
|
| 207 |
+
|
| 208 |
@line_handler.add(MessageEvent, message=TextMessage)
|
| 209 |
def handle_message(event):
|
| 210 |
+
# 檢查是否為文字訊息
|
| 211 |
if event.message.type != "text":
|
| 212 |
line_bot_api.reply_message(
|
| 213 |
event.reply_token,
|
| 214 |
TextSendMessage(text="請輸入文字訊息。")
|
| 215 |
)
|
| 216 |
return
|
| 217 |
+
|
| 218 |
+
# 取得使用者輸入的文字
|
| 219 |
+
prompt = event.message.text
|
| 220 |
+
|
| 221 |
+
if not text_model:
|
| 222 |
+
line_bot_api.reply_message(
|
| 223 |
+
event.reply_token,
|
| 224 |
+
TextSendMessage(text="抱歉,AI 模型尚未準備就緒。")
|
| 225 |
+
)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 226 |
return
|
| 227 |
+
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 228 |
try:
|
| 229 |
+
# 先生成文字回應
|
| 230 |
+
generation_config = genai.types.GenerationConfig(
|
| 231 |
+
max_output_tokens=1000,
|
| 232 |
+
temperature=0.3,
|
| 233 |
+
top_p=0.5
|
| 234 |
+
)
|
| 235 |
+
|
| 236 |
+
text_response = text_model.generate_content(
|
| 237 |
+
contents=prompt,
|
| 238 |
+
generation_config=generation_config
|
| 239 |
+
)
|
| 240 |
+
|
| 241 |
+
# 嘗試生成相關圖片
|
| 242 |
+
image_bytes, image_status = generate_image_from_content(prompt)
|
| 243 |
+
|
| 244 |
+
messages = []
|
| 245 |
+
|
| 246 |
+
# 添加文字回應
|
| 247 |
+
if text_response and text_response.text:
|
| 248 |
+
messages.append(TextSendMessage(text=text_response.text))
|
| 249 |
+
else:
|
| 250 |
+
messages.append(TextSendMessage(text="抱歉,無法產生適當的回應。"))
|
| 251 |
+
|
| 252 |
+
# 如果成功生成圖片,添加圖片訊息
|
| 253 |
+
if image_bytes:
|
| 254 |
+
# 注意:這裡需要實作圖片上傳功能
|
| 255 |
+
# Line Bot 需要公開可訪問的圖片網址
|
| 256 |
+
|
| 257 |
+
# 上傳圖片並取得網址
|
| 258 |
+
image_url = upload_image_to_cloud(image_bytes)
|
| 259 |
+
|
| 260 |
+
# 創建圖片訊息
|
| 261 |
+
# originalContentUrl: 原始圖片網址
|
| 262 |
+
# previewImageUrl: 預覽圖片網址 (通常使用相同網址)
|
| 263 |
+
messages.append(ImageSendMessage(
|
| 264 |
+
original_content_url=image_url,
|
| 265 |
+
preview_image_url=image_url
|
| 266 |
+
))
|
| 267 |
+
|
| 268 |
+
messages.append(TextSendMessage(text="✨ 根據內容為您生成了相關圖片"))
|
| 269 |
+
else:
|
| 270 |
+
messages.append(TextSendMessage(text=f"📝 文字回應已生成,圖片生成失敗:{image_status}"))
|
| 271 |
+
|
| 272 |
+
# 發送所有訊息
|
| 273 |
+
line_bot_api.reply_message(event.reply_token, messages)
|
| 274 |
+
|
| 275 |
+
except Exception as e:
|
| 276 |
+
print(f"處理訊息時出錯: {e}")
|
| 277 |
line_bot_api.reply_message(
|
| 278 |
event.reply_token,
|
| 279 |
+
TextSendMessage(text="處理您的訊息時發生錯誤,請稍後再試。")
|
| 280 |
)
|
|
|
|
|
|
|
|
|
|
| 281 |
|
| 282 |
+
# 應用程式啟動事件
|
| 283 |
@app.on_event("startup")
|
| 284 |
async def startup_event():
|
| 285 |
+
"""應用程式啟動時執行的初始化"""
|
| 286 |
print("正在初始化服務...")
|
| 287 |
initialize_services()
|
| 288 |
setup_message_handler()
|
| 289 |
print("服務初始化完成")
|
| 290 |
|
|
|
|
| 291 |
if __name__ == "__main__":
|
| 292 |
+
# 啟動 FastAPI 應用程式
|
| 293 |
port = int(os.getenv("PORT", 7860))
|
| 294 |
+
uvicorn.run("main:app", host="0.0.0.0", port=port, reload=False)
|