from typing import Optional
from pydantic_settings import BaseSettings

class Settings(BaseSettings):
    DEBUG: bool = True  # 开发模式标志
    API_V1_STR: str = "/api/v1"
    PROJECT_NAME: str = "FastAPI 项目"

    # 订单价格配置
    ORDER_BASE_PRICE: float = 3.0  # 基础费用
    ORDER_EXTRA_PACKAGE_PRICE: float = 0.5  # 额外包裹费用
    ORDER_EXTRA_PACKAGE_THRESHOLD: int = 5  # 额外收费阈值

    # JWT 配置
    SECRET_KEY: str = "your-secret-key-here"
    ACCESS_TOKEN_EXPIRE_MINUTES: Optional[int] = None  # None 表示永不过期

    REDIS_HOST: str = "101.36.120.145"
    REDIS_PORT: int = 6379
    REDIS_DB: int = 0
    REDIS_PASSWORD: str = "redis_rJRMHr"
    VERIFICATION_CODE_EXPIRE_SECONDS: int = 300  # 验证码5分钟后过期

    # 短信配置
    UNI_APP_ID: str = "kFb5kA5EDXpnzUReadaRNpDTFf6rNmXEc45jwS2C1Mvh9Erj2"
    UNI_SMS_TEMPLATE_ID: str = "pub_verif_basic"  # 验证码短信模板ID
    UNI_SMS_SIGN: str = "BAISIJI"  # 短信签名

    # MySQL配置
    MYSQL_HOST: str = "101.36.120.145"
    MYSQL_PORT: int = 3306
    MYSQL_USER: str = "root"
    MYSQL_PASSWORD: str = "mariadb_4rMwpT"
    MYSQL_DB: str = "deliveryman"
    
    @property
    def SQLALCHEMY_DATABASE_URL(self) -> str:
        return f"mysql+pymysql://{self.MYSQL_USER}:{self.MYSQL_PASSWORD}@{self.MYSQL_HOST}:{self.MYSQL_PORT}/{self.MYSQL_DB}?charset=utf8mb4"

    # 腾讯云 COS 配置
    COS_SECRET_ID: str = "AKIDxnbGj281iHtKallqqzvlV5YxBCrPltnS"
    COS_SECRET_KEY: str = "ta6PXTMBsX7dzA7IN6uYUFn8F9uTovoU"
    COS_REGION: str = "ap-chengdu"
    COS_BUCKET: str = "dman-1311994147"
    COS_BASE_URL: str = "dman-1311994147.cos.ap-chengdu.myqcloud.com"

    class Config:
        case_sensitive = True

settings = Settings()