"""
Shared configuration for all Weibo-HotSign backend services.
Loads settings from environment variables using pydantic-settings.
"""

from pydantic_settings import BaseSettings
from typing import Optional


class SharedSettings(BaseSettings):
    """Shared settings across all backend services."""

    # Database (默认使用 SQLite，生产环境可配置为 MySQL)
    DATABASE_URL: str = "sqlite+aiosqlite:///../weibo_hotsign.db"
    #mysql+aiomysql://root:password@localhost/weibo_hotsign
    # Redis (可选，本地开发可以不使用)
    REDIS_URL: Optional[str] = None
    USE_REDIS: bool = False  # 是否启用 Redis

    # JWT
    JWT_SECRET_KEY: str = "change-me-in-production"
    JWT_ALGORITHM: str = "HS256"
    JWT_EXPIRATION_HOURS: int = 24

    # Cookie encryption
    COOKIE_ENCRYPTION_KEY: str = "change-me-in-production"
    
    # Environment
    ENVIRONMENT: str = "development"

    class Config:
        case_sensitive = True
        env_file = ".env"


shared_settings = SharedSettings()