import os
from pathlib import Path
from typing import Optional
from pydantic import BaseSettings, Field, AnyUrl, validator
from dotenv import load_dotenv
import os

# 在 Settings 类之前加载 .env 文件
load_dotenv(os.path.join(os.path.dirname(__file__), '../.env'))

class Settings(BaseSettings):

    # 环境标识
    ENV: str = "prod"  # prod/dev
    ENABLE_ALIYUN_LOG: bool = True

    # 路径配置
    PROJECT_ROOT: Path = Path(__file__).parent.parent.resolve()
    LOG_DIR: Path = PROJECT_ROOT / "logs"

    # 日志配置
    LOG_LEVEL: str = "INFO"

    # 阿里云数据库配置 (RDS)
    DB_HOST: str = Field(..., env="DB_HOST")
    DB_PORT: int = Field(3306, env="DB_PORT")
    DB_USER: str = Field(..., env="DB_USER")
    DB_PASSWORD: str = Field(..., env="DB_PASSWORD")
    DB_NAME: str = Field(..., env="DB_NAME")
    DB_CHARSET: str = Field(..., env="DB_CHARSET")
    DB_POOL_SIZE: int = 20
    DB_POOL_RECYCLE: int = 3600

    # 阿里云RocketMQ配置
    ROCKETMQ_ENDPOINT: AnyUrl = Field(..., env="ROCKETMQ_ENDPOINT")
    ROCKETMQ_ACCESS_KEY_ID: str = Field(..., env="ROCKETMQ_ACCESS_KEY_ID")
    ROCKETMQ_ACCESS_KEY_SECRET: str = Field(..., env="ROCKETMQ_ACCESS_KEY_SECRET")
    ROCKETMQ_INSTANCE_ID: str = Field(..., env="ROCKETMQ_INSTANCE_ID")
    ROCKETMQ_WAIT_SECONDS: int = 10
    ROCKETMQ_BATCH: int = 1

    # 连接池配置
    CONNECTION_TIMEOUT: int = 10
    REQUEST_TIMEOUT: int = 30

    # 阿里云日志
    ALIYUN_ACCESS_KEY_ID: str = Field(..., env="ALIYUN_ACCESS_KEY_ID")
    ALIYUN_ACCESS_KEY_SECRET: str = Field(..., env="ALIYUN_ACCESS_KEY_SECRET")

    class Config:
        env_file = ".env"
        env_file_encoding = 'utf-8'
        case_sensitive = False

    # @property
    # def database_url(self) -> str:
    #     """生成安全的数据库连接字符串"""
    #     return f"mysql+asyncmy://{self.DB_USER}:{self.DB_PASSWORD}@{self.DB_HOST}:{self.DB_PORT}/{self.DB_NAME}?charset={self.DB_CHARSET}"


settings = Settings()

# 自动创建日志目录
os.makedirs(settings.LOG_DIR, exist_ok=True)