"""应用配置：环境变量（.env）+ 业务参数（config.yaml）"""
from functools import lru_cache
from pathlib import Path
from typing import Any

import yaml
from pydantic_settings import BaseSettings, SettingsConfigDict

BASE_DIR = Path(__file__).resolve().parent.parent  # server/


class Settings(BaseSettings):
    """环境配置（连接串、密钥等，均不入库）"""

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

    # 服务
    app_env: str = "dev"
    app_host: str = "0.0.0.0"
    app_port: int = 8000

    # 数据库 / Redis
    database_url: str = "mysql+aiomysql://root:root@127.0.0.1:3306/video?charset=utf8mb4"
    redis_url: str = "redis://127.0.0.1:6379/0"
    celery_broker_url: str = "redis://127.0.0.1:6379/1"
    celery_result_backend: str = "redis://127.0.0.1:6379/2"

    # JWT
    jwt_secret: str = "please-change-me-in-production"
    jwt_algorithm: str = "HS256"
    access_token_ttl: int = 2 * 3600
    refresh_token_ttl: int = 30 * 24 * 3600
    admin_token_ttl: int = 12 * 3600

    # 对象存储
    oss_endpoint: str = ""
    oss_bucket: str = ""
    oss_access_key_id: str = ""
    oss_access_key_secret: str = ""

    # 支付渠道
    alipay_app_id: str = ""
    alipay_private_key: str = ""
    alipay_public_key: str = ""
    alipay_notify_url: str = ""
    alipay_return_url: str = ""
    wechat_mchid: str = ""
    wechat_app_id: str = ""
    wechat_api_v3_key: str = ""
    wechat_private_key: str = ""
    wechat_cert_serial_no: str = ""  # 商户 API 证书序列号
    wechat_platform_cert: str = ""  # 微信支付平台证书（PEM，回调验签用）
    wechat_notify_url: str = ""
    wechat_api_base: str = "https://api.mch.weixin.qq.com"
    tron_api_key: str = ""

    # 短信 / 邮件
    sms_access_key_id: str = ""
    sms_access_key_secret: str = ""
    sms_sign_name: str = ""
    smtp_host: str = ""
    smtp_port: int = 465
    smtp_user: str = ""
    smtp_password: str = ""


@lru_cache
def get_settings() -> Settings:
    return Settings()


@lru_cache
def get_biz_config() -> dict[str, Any]:
    """业务参数（积分/会员/激励等默认值，后台 system_configs 可覆盖部分项）"""
    with open(BASE_DIR / "config.yaml", encoding="utf-8") as f:
        return yaml.safe_load(f) or {}


settings = get_settings()
biz_config = get_biz_config()