# ===========================================
# 班级操行分管理系统 - 后端服务
# 
# 开发者: Canglan
# 联系方式: admin@sea-studio.top
# 版权归属: Sea Network Technology Studio
# 许可证: MIT License
# 
# 版权所有 © Sea Network Technology Studio
# ===========================================

import os
from dotenv import load_dotenv
from typing import List

# 加载环境变量
load_dotenv()


class Settings:
    """应用配置类"""
    
    # ========== 应用配置 ==========
    APP_NAME: str = os.getenv("APP_NAME", "班级操行分管理系统")
    APP_ENV: str = os.getenv("APP_ENV", "production")
    DEBUG: bool = os.getenv("DEBUG", "False").lower() == "true"
    SECRET_KEY: str = os.getenv("SECRET_KEY", "")
    API_VERSION: str = os.getenv("API_VERSION", "v1")
    
    # ========== 数据库配置 ==========
    DB_HOST: str = os.getenv("DB_HOST", "127.0.0.1")
    DB_PORT: int = int(os.getenv("DB_PORT", "3306"))
    DB_USER: str = os.getenv("DB_USER", "root")
    DB_PASSWORD: str = os.getenv("DB_PASSWORD", "")
    DB_NAME: str = os.getenv("DB_NAME", "classmanagerdb")
    DB_POOL_SIZE: int = int(os.getenv("DB_POOL_SIZE", "10"))
    DB_MAX_OVERFLOW: int = int(os.getenv("DB_MAX_OVERFLOW", "20"))
    
    # ========== Redis配置 ==========
    REDIS_HOST: str = os.getenv("REDIS_HOST", "127.0.0.1")
    REDIS_PORT: int = int(os.getenv("REDIS_PORT", "6379"))
    REDIS_PASSWORD: str = os.getenv("REDIS_PASSWORD", "")
    REDIS_DB: int = int(os.getenv("REDIS_DB", "0"))
    REDIS_MAX_CONNECTIONS: int = int(os.getenv("REDIS_MAX_CONNECTIONS", "50"))
    
    @property
    def REDIS_URL(self) -> str:
        """获取Redis连接URL"""
        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}"
    
    # ========== JWT配置 ==========
    JWT_SECRET_KEY: str = os.getenv("JWT_SECRET_KEY", "")
    JWT_ALGORITHM: str = os.getenv("JWT_ALGORITHM", "HS256")
    JWT_EXPIRE_MINUTES: int = int(os.getenv("JWT_EXPIRE_MINUTES", "30"))
    
    # ========== 密码加密 ==========
    PASSWORD_SALT: str = os.getenv("PASSWORD_SALT", "")
    
    # ========== 调试入口 ==========
    DEBUG_PATH: str = os.getenv("DEBUG_PATH", "/debug_add_admin")
    
    # ========== 扣分规则 ==========
    DEDUCTION_HOMEWORK_NOT_SUBMIT: int = int(os.getenv("DEDUCTION_HOMEWORK_NOT_SUBMIT", "2"))
    DEDUCTION_HOMEWORK_LATE: int = int(os.getenv("DEDUCTION_HOMEWORK_LATE", "1"))
    DEDUCTION_ATTENDANCE_ABSENT: int = int(os.getenv("DEDUCTION_ATTENDANCE_ABSENT", "5"))
    DEDUCTION_ATTENDANCE_LATE: int = int(os.getenv("DEDUCTION_ATTENDANCE_LATE", "2"))
    DEDUCTION_ATTENDANCE_LEAVE: int = int(os.getenv("DEDUCTION_ATTENDANCE_LEAVE", "1"))
    
    # ========== 劳动委员固定分值 ==========
    LABOR_POINTS_ADD: int = int(os.getenv("LABOR_POINTS_ADD", "1"))
    LABOR_POINTS_SUBTRACT: int = int(os.getenv("LABOR_POINTS_SUBTRACT", "-1"))
    
    # ========== 班长加减分限制 ==========
    MONITOR_MAX_ADD: int = int(os.getenv("MONITOR_MAX_ADD", "5"))
    MONITOR_MAX_SUBTRACT: int = int(os.getenv("MONITOR_MAX_SUBTRACT", "-5"))
    
    # ========== 日志配置 ==========
    LOG_LEVEL: str = os.getenv("LOG_LEVEL", "INFO")
    LOG_MAX_BYTES: int = int(os.getenv("LOG_MAX_BYTES", "104857600"))
    LOG_BACKUP_COUNT: int = int(os.getenv("LOG_BACKUP_COUNT", "30"))
    LOG_RETENTION_DAYS: int = int(os.getenv("LOG_RETENTION_DAYS", "365"))
    
    # ========== CORS配置 ==========
    CORS_ORIGINS: List[str] = os.getenv("CORS_ORIGINS", "http://localhost:8080").split(",")
    
    # ========== 上传配置 ==========
    MAX_UPLOAD_SIZE: int = int(os.getenv("MAX_UPLOAD_SIZE", "5242880"))
    ALLOWED_EXTENSIONS: set = set(os.getenv("ALLOWED_EXTENSIONS", "json").split(","))
    
    # ========== 学生初始配置 ==========
    STUDENT_INITIAL_POINTS: int = int(os.getenv("STUDENT_INITIAL_POINTS", "60"))

    def validate(self) -> None:
        """验证必要配置是否存在"""
        required_configs = [
            ("SECRET_KEY", self.SECRET_KEY),
            ("JWT_SECRET_KEY", self.JWT_SECRET_KEY),
            ("PASSWORD_SALT", self.PASSWORD_SALT),
        ]
        for name, value in required_configs:
            if not value:
                raise ValueError(f"配置 {name} 不能为空")


settings = Settings()