from pydantic_settings import BaseSettings
from functools import lru_cache

class Settings(BaseSettings):
    APP_NAME: str = "海洋项目管理系统"
    APP_VERSION: str = "1.0.0"
    DEBUG: bool = True

    DB_HOST: str = "localhost"
    DB_PORT: int = 3306
    DB_USER: str = "root"
    DB_PASSWORD: str = "rootpassword"
    DB_NAME: str = "project_manager"
    DB_CHARSET: str = "utf8mb4"

    SECRET_KEY: str = "your-secret-key-change-this-in-production"
    ALGORITHM: str = "HS256"
    ACCESS_TOKEN_EXPIRE_MINUTES: int = 1440

    CORS_ORIGINS: list[str] = ["http://localhost:3000", "http://127.0.0.1:3000"]

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


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