from pydantic_settings import BaseSettings


class Settings(BaseSettings):
    # 数据库配置
    database_url: str = ""
    
    # Redis配置
    redis_url: str = "redis://localhost:6379/0"
    redis_lock_timeout: int = 30  # 锁超时时间（秒）
    redis_lock_retry_delay: float = 0.1  # 锁重试延迟（秒）
    redis_lock_max_retries: int = 100  # 最大重试次数
    
    # 业务配置
    count_threshold: int = 3  # count阈值，大于等于此值直接返回
    external_api_enabled: bool = False  # 是否启用外部API调用
    external_api_retry_max: int = 3  # 外部API最大重试次数
    external_api_url: str = ""
    
    # 日志配置
    log_level: str = "INFO"  # DEBUG, INFO, WARNING, ERROR, CRITICAL
    log_file: str = "logs/app.log"  # 日志文件路径
    log_max_bytes: int = 10 * 1024 * 1024  # 10MB
    log_backup_count: int = 5  # 备份文件数量
    log_format: str = "%(asctime)s - %(name)s - %(levelname)s - %(message)s"
    log_date_format: str = "%Y-%m-%d %H:%M:%S"
    
    # 应用配置
    app_name: str = "AI Talk Callback API"
    environment: str = "production"  # 环境: production, test, development
    debug: bool = False
    
    class Config:
        env_file = ".env"
        case_sensitive = False


settings = Settings()