from pydantic_settings import BaseSettings


class Settings(BaseSettings):
    """从 .env 文件读取配置项"""

    # 数据库连接参数
    db_host: str = "localhost"
    db_port: int = 5432
    db_user: str = "postgres"
    db_password: str = "postgres"
    db_name: str = "domain_monitor"

    # 服务配置
    host: str = "0.0.0.0"
    port: int = 8000
    debug: bool = True

    # 外部 API 配置（格式待定）
    domain_api_base_url: str = ""
    domain_api_key: str = ""

    # 阿里云短信配置
    sms_access_key_id: str = ""
    sms_access_key_secret: str = ""
    sms_sign_name: str = "四川网讯创智数字产业发展"

    # 短信模板 CODE
    sms_template_code_verify: str = "SMS_333915522"
    sms_template_code_expired: str = "SMS_506350367"
    sms_template_code_restored: str = "SMS_506275397"

    @property
    def database_url(self) -> str:
        """拼接 SQLAlchemy 异步连接字符串"""
        return f"postgresql+asyncpg://{self.db_user}:{self.db_password}@{self.db_host}:{self.db_port}/{self.db_name}"

    model_config = {"env_file": ".env", "env_file_encoding": "utf-8"}


settings = Settings()