app/page_speed/config.py

import os
from pydantic_settings import BaseSettings, SettingsConfigDict
from urllib.parse import quote_plus


class Settings(BaseSettings):
    """Application settings loaded from environment variables."""

    # ───────────────────────────────────────────────────────────────────────────
    # Google API Keys
    # ───────────────────────────────────────────────────────────────────────────
    pagespeed_api_key: str
    gemini_api_key: str

    # Qdrant (vector DB) connection
    qdrant_url: str 
    qdrant_api_key: str 
    qdrant_timeout: int = 60

    # ───────────────────────────────────────────────────────────────────────────
    # MongoDB Configuration
    # ───────────────────────────────────────────────────────────────────────────
    mongo_user: str
    mongo_password: str
    mongo_host: str
    mongo_db: str = "MAAS"
    mongo_collection: str = "chat_histories"
    
    @property
    def mongo_uri(self) -> str:
        """
        Return a mongodb+srv URI for use with MongoClient.
        """
        pw = quote_plus(self.mongo_password)
        return f"mongodb+srv://{self.mongo_user}:{pw}@{self.mongo_host}/{self.mongo_db}?retryWrites=true&w=majority"

    # ───────────────────────────────────────────────────────────────────────────
    # FastAPI Server Configuration
    # ───────────────────────────────────────────────────────────────────────────
    host: str = "0.0.0.0"
    
    # --- FIX IS HERE ---
    # 1. Use "PORT" (uppercase) to match Cloud env variables
    # 2. Default to 7860 to match Hugging Face requirements
    port: int = int(os.getenv("PORT", 7860))
    
    debug: bool = False

    # ───────────────────────────────────────────────────────────────────────────
    # App Metadata
    # ───────────────────────────────────────────────────────────────────────────
    app_name: str = "PageSpeed Insights Report Generator"
    app_version: str = "1.0.0"
    app_description: str = (
        "Professional API for generating PageSpeed Insights reports "
        "using Google's APIs and Gemini AI"
    )

    model_config = SettingsConfigDict(
        env_file=".env",
        env_file_encoding="utf-8",
        extra="ignore",
    )

# Single shared Settings instance
settings = Settings()