"""
系统配置模块
"""
from pydantic_settings import BaseSettings
from typing import Optional
from functools import lru_cache


class Settings(BaseSettings):
    """系统配置"""
    
    # 应用配置
    APP_NAME: str = "医院绩效考核管理系统"
    APP_VERSION: str = "1.0.0"
    DEBUG: bool = True
    API_PREFIX: str = "/api/v1"
    
    # 数据库配置
    DATABASE_URL: str = "postgresql+asyncpg://postgres:postgres@localhost:5432/hospital_performance"
    DATABASE_POOL_SIZE: int = 20
    DATABASE_MAX_OVERFLOW: int = 10
    
    # JWT配置
    SECRET_KEY: str = "your-secret-key-change-in-production-min-32-chars"
    ALGORITHM: str = "HS256"
    ACCESS_TOKEN_EXPIRE_MINUTES: int = 60 * 8  # 8小时
    
    # 跨域配置
    CORS_ORIGINS: list[str] = ["http://localhost:3000", "http://localhost:5173"]
    
    # 分页配置
    DEFAULT_PAGE_SIZE: int = 20
    MAX_PAGE_SIZE: int = 100
    
    class Config:
        env_file = ".env"
        case_sensitive = True


@lru_cache()
def get_settings() -> Settings:
    """获取配置单例"""
    return Settings()


settings = get_settings()