services/validator.py

# services/validator.py
import googlemaps
import requests
from google import genai
from openai import OpenAI


class APIValidator:

    # 1. Google Maps (ID Only = Free)
    @staticmethod
    def test_google_maps(api_key: str) -> str:
        if not api_key: return "⚠️ Please enter a key first."
        try:
            gmaps = googlemaps.Client(key=api_key)
            # 使用 Taipei 101 ID 測試，只請求 ID 欄位 = 免費 Essentials SKU
            gmaps.place(place_id='ChIJH56c2rarQjQRphD9gvC8BhI', fields=['place_id'])
            return "✅ Google Maps Key is Valid!"
        except Exception as e:
            err = str(e)
            if "REQUEST_DENIED" in err: return "❌ Invalid Key"
            return f"❌ Error: {err.split(':')[0]}"

    # 2. OpenWeather (原本就是 call API 才會驗證，無法避開，但極便宜)
    @staticmethod
    def test_openweather(api_key: str) -> str:
        if not api_key: return "⚠️ Please enter a key first."
        try:
            # 隨便查個座標
            url = f"https://api.openweathermap.org/data/2.5/weather?lat=25&lon=121&appid={api_key}"
            resp = requests.get(url, timeout=5)
            if resp.status_code == 200: return "✅ OpenWeather Key is Valid!"
            if resp.status_code == 401: return "❌ Invalid Key"
            return f"❌ Error: {resp.status_code}"
        except:
            return "❌ Connection Failed"

    # 3. LLM (List Models = Free)
    @staticmethod
    def test_llm(provider: str, api_key: str, model_id: str = None) -> str:
        if not api_key: return "⚠️ Please enter a key first."

        try:
            if provider == "Gemini":
                # Google GenAI: 列出模型是免費的管理操作
                client = genai.Client(api_key=api_key)
                # 試著抓取第一個模型就好，不用全部列出來
                client.models.list()
                return "✅ Gemini Key is Valid!"

            elif provider == "OpenAI":
                # OpenAI: 列出模型是免費的
                client = OpenAI(api_key=api_key)
                client.models.list()
                return "✅ OpenAI Key is Valid!"

            elif provider == "Groq":
                # Groq: 相容 OpenAI 介面，列出模型也是免費的
                client = OpenAI(
                    api_key=api_key,
                    base_url="https://api.groq.com/openai/v1"
                )
                client.models.list()
                return "✅ Groq Key is Valid!"

            else:
                return "⚠️ Unknown Provider"

        except Exception as e:
            err = str(e).lower()
            if "401" in err or "invalid_api_key" in err: return "❌ Invalid Key"
            if "429" in err: return "❌ Rate Limit Exceeded"  # 雖然免費，但如果按太快還是會擋
            return f"❌ Error: {str(e)[:20]}..."