from pydantic_settings import BaseSettings
from typing import Optional


class Settings(BaseSettings):
    # 项目信息
    PROJECT_NAME: str = "期货统一数据平台"
    VERSION: str = "0.1.0"
    API_PREFIX: str = "/api/v1"

    # 数据库配置
    DB_HOST: str = "postgres"
    DB_PORT: int = 5432
    DB_NAME: str = "futures_data"
    DB_USER: str = "futures"
    DB_PASSWORD: str = "futures123"
    DATABASE_URL: str = ""  # 直接指定完整 URL，支持 sqlite:///

    @property
    def database_url(self) -> str:
        if self.DATABASE_URL:
            return self.DATABASE_URL
        return f"postgresql://{self.DB_USER}:{self.DB_PASSWORD}@{self.DB_HOST}:{self.DB_PORT}/{self.DB_NAME}"

    # Redis 配置
    REDIS_HOST: str = "redis"
    REDIS_PORT: int = 6379
    REDIS_DB: int = 0
    REDIS_PASSWORD: Optional[str] = None

    @property
    def REDIS_URL(self) -> str:
        if self.REDIS_PASSWORD:
            return f"redis://:{self.REDIS_PASSWORD}@{self.REDIS_HOST}:{self.REDIS_PORT}/{self.REDIS_DB}"
        return f"redis://{self.REDIS_HOST}:{self.REDIS_PORT}/{self.REDIS_DB}"

    # Tushare 配置
    TUSHARE_TOKEN: str = ""

    # 服务配置
    HOST: str = "0.0.0.0"
    PORT: int = 8000
    DEBUG: bool = True

    class Config:
        env_file = ".env"
        case_sensitive = True


settings = Settings()