"""应用配置：从 .env / 环境变量加载。"""
from pydantic_settings import BaseSettings, SettingsConfigDict


class Settings(BaseSettings):
    """所有可配置项；不允许在源码中硬编码凭据。"""

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

    # Zendesk 凭据
    zendesk_subdomain: str
    zendesk_email: str
    zendesk_api_token: str

    # 业务默认值
    default_locale: str = "en-us"

    # 缓存刷新时间（本地时区，24 小时制）
    cache_refresh_hour: int = 0
    cache_refresh_minute: int = 0

    # HTTP
    http_timeout: int = 30

    @property
    def zendesk_base_url(self) -> str:
        return f"https://{self.zendesk_subdomain}.zendesk.com/api/v2/help_center"

    @property
    def zendesk_auth(self) -> tuple[str, str]:
        # Zendesk API Token 鉴权格式：("{email}/token", api_token)
        return (f"{self.zendesk_email}/token", self.zendesk_api_token)


settings = Settings()