"""
应用配置文件
按领域驱动的配置管理设计
"""
from pydantic_settings import BaseSettings
from pydantic import ConfigDict
from typing import Optional, List
from functools import lru_cache
import os


class ServerSettings(BaseSettings):
    """服务器配置"""
    model_config = ConfigDict(env_prefix="SERVER_", env_file="D:\work\code\python\demo\demo07\backend\.env")

    HOST: str = "0.0.0.0"
    PORT: int = 8000
    WORKERS: int = 1
    LOG_LEVEL: str = "info"


class DatabaseSettings(BaseSettings):
    """数据库配置"""
    model_config = ConfigDict(env_prefix="DB_", env_file="D:\work\code\python\demo\demo07\backend\.env")

    # MySQL连接格式: mysql+pymysql://username:password@host:port/database_name?charset=utf8mb4
    DATABASE_URL: str = "mysql+pymysql://root:taiyi1224@localhost:3306/baoxiang?charset=utf8mb4"

    # SQLite开发配置 (可选)
    # SQLite连接格式: sqlite:///./database.db
    # DATABASE_URL: str = "sqlite:///./treasure_box_game.db"

    # 数据库连接池配置
    DB_POOL_SIZE: int = 20
    DB_MAX_OVERFLOW: int = 30
    DB_POOL_TIMEOUT: int = 30
    DB_POOL_RECYCLE: int = 3600


class SecuritySettings(BaseSettings):
    """安全配置"""
    model_config = ConfigDict(env_prefix="SECURITY_", env_file="D:\work\code\python\demo\demo07\backend\.env")

    SECRET_KEY: str = "your-secret-key-change-in-production"
    ALGORITHM: str = "HS256"
    ACCESS_TOKEN_EXPIRE_MINUTES: int = 10080  # 7天
    PASSWORD_MAX_LENGTH: int = 72  # 密码哈希最大长度
    WS_CLOSE_CODE: int = 4001  # WebSocket关闭码


class RedisSettings(BaseSettings):
    """Redis配置"""
    model_config = ConfigDict(env_prefix="REDIS_", env_file="D:\work\code\python\demo\demo07\backend\.env")

    REDIS_HOST: str = "localhost"
    REDIS_PORT: int = 6379
    REDIS_DB: int = 0
    REDIS_PASSWORD: Optional[str] = None
    REDIS_TIMEOUT: int = 5


class CORSSettings(BaseSettings):
    """CORS跨域配置"""
    model_config = ConfigDict(env_prefix="CORS_", env_file="D:\work\code\python\demo\demo07\backend\.env")

    ALLOW_ORIGINS: str = "http://localhost:3000,http://127.0.0.1:3000,http://localhost:3001,http://127.0.0.1:3001,http://bx.youxidaren.cn,https://bx.youxidaren.cn,http://199.68.217.236:3000,http://199.68.217.236:3001,http://199.68.217.236:8000,*"
    ALLOW_CREDENTIALS: bool = True
    ALLOW_METHODS: str = "GET,POST,PUT,DELETE,PATCH,OPTIONS"
    ALLOW_HEADERS: str = "Authorization,Content-Type,Accept,X-Requested-With"

    def get_allow_origins(self) -> List[str]:
        """解析允许的源列表"""
        return [origin.strip() for origin in self.ALLOW_ORIGINS.split(",")]

    def get_allow_methods(self) -> List[str]:
        """解析允许的方法列表"""
        return [method.strip() for method in self.ALLOW_METHODS.split(",")]

    def get_allow_headers(self) -> List[str]:
        """解析允许的头部列表"""
        return [header.strip() for header in self.ALLOW_HEADERS.split(",")]


class PaginationSettings(BaseSettings):
    """分页配置"""
    model_config = ConfigDict(env_prefix="PAGINATION_", env_file="D:\work\code\python\demo\demo07\backend\.env")

    DEFAULT_PAGE_SIZE: int = 20
    MAX_PAGE_SIZE: int = 100
    ADMIN_PAGE_SIZE: int = 20
    ANNOUNCEMENT_PAGE_SIZE: int = 10
    ANNOUNCEMENT_LIMIT: int = 5
    USER_LIST_LIMIT: int = 100
    STREAMER_LIST_LIMIT: int = 100


class GameSettings(BaseSettings):
    """游戏配置"""
    model_config = ConfigDict(env_prefix="GAME_", env_file="D:\work\code\python\demo\demo07\backend\.env")

    # 经济配置
    NEW_USER_REWARD: int = 100000  # 新用户注册奖励(分)
    DAILY_ALLOWANCE: int = 5000   # 每日低保(分)
    ALLOWANCE_THRESHOLD: int = 1000  # 低保门槛(分)

    # 抽水配置
    HOUSE_EDGE: float = 0.10  # 总抽水10%
    STREAMER_SHARE: float = 0.05  # 主播分润5%
    PLATFORM_SHARE: float = 0.05  # 平台分润5%

    # 游戏逻辑配置
    DEFAULT_COUNTDOWN: int = 300  # 默认倒计时(秒)
    MIN_COUNTDOWN: int = 10  # 最小倒计时(秒)
    MAX_COUNTDOWN: int = 3600  # 最大倒计时(秒)
    DEFAULT_MAX_ACTIVE_CHESTS: int = 10  # 默认最大活跃宝箱数
    MIN_COMMISSION_RATE: float = 0.0  # 最小主播抽成(%)
    MAX_COMMISSION_RATE: float = 100.0  # 最大主播抽成(%)
    DEFAULT_COMMISSION_RATE: float = 5.0  # 默认主播抽成(%)


class WebSocketSettings(BaseSettings):
    """WebSocket配置"""
    model_config = ConfigDict(env_prefix="WS_", env_file="D:\work\code\python\demo\demo07\backend\.env")

    BROADCAST_INTERVAL: int = 200  # 广播间隔(毫秒)
    HEARTBEAT_INTERVAL: int = 30  # 心跳间隔(秒)
    CONNECTION_TIMEOUT: int = 60  # 连接超时(秒)


class AdminSettings(BaseSettings):
    """管理员配置"""
    model_config = ConfigDict(env_prefix="ADMIN_", env_file="D:\work\code\python\demo\demo07\backend\.env")

    DEFAULT_ADMIN_PASSWORD: str = "admin123"
    DEFAULT_STREAMER_PASSWORD: str = "streamer123"
    DEFAULT_USER_PASSWORD: str = "user123"
    DEFAULT_ADMIN_BALANCE: int = 1000000  # 默认管理员余额(分)
    DEFAULT_STREAMER_BALANCE: int = 500000  # 默认主播余额(分)
    DEFAULT_USER_BALANCE: int = 200000  # 默认用户余额(分)


class AnnouncementSettings(BaseSettings):
    """公告配置"""
    model_config = ConfigDict(env_prefix="ANNOUNCEMENT_", env_file="D:\work\code\python\demo\demo07\backend\.env")

    DEFAULT_PRIORITY: int = 0
    MAX_PRIORITY: int = 100
    HIGH_PRIORITY: int = 100


class Settings(BaseSettings):
    """
    根配置类 - 组合所有子配置
    """
    model_config = ConfigDict(
        env_file="./.env",
        extra='ignore'  # 忽略.env文件中未定义的变量
    )

    server: ServerSettings = ServerSettings()
    database: DatabaseSettings = DatabaseSettings()
    security: SecuritySettings = SecuritySettings()
    redis: RedisSettings = RedisSettings()
    cors: CORSSettings = CORSSettings()
    pagination: PaginationSettings = PaginationSettings()
    game: GameSettings = GameSettings()
    websocket: WebSocketSettings = WebSocketSettings()
    admin: AdminSettings = AdminSettings()
    announcement: AnnouncementSettings = AnnouncementSettings()


@lru_cache()
def get_settings() -> Settings:
    """获取配置实例 (单例模式 + 缓存)"""
    return Settings()


# 为了向后兼容，提供全局settings实例
settings = get_settings()