"""全局配置 - 使用 Pydantic Settings 支持环境变量和 .env 文件"""
import os
from typing import List
from pydantic_settings import BaseSettings, SettingsConfigDict


class Settings(BaseSettings):
    model_config = SettingsConfigDict(
        env_file=".env",
        env_file_encoding="utf-8",
        extra="ignore",
    )

    # 数据库配置
    db_path: str = "db/proxies.sqlite"

    # API 服务配置
    host: str = "127.0.0.1"
    port: int = 18080

    # 验证器配置
    validator_timeout: int = 5
    validator_max_concurrency: int = 200
    validator_connect_timeout: int = 3

    # 爬虫配置
    crawler_num_validators: int = 50
    crawler_max_queue_size: int = 500

    # 日志配置
    log_level: str = "INFO"
    log_dir: str = "logs"

    # 导出配置
    export_max_records: int = 10000

    # 代理评分配置
    score_valid: int = 10
    score_invalid: int = -5
    score_min: int = 0
    score_max: int = 100

    # 验证目标配置
    validator_test_urls: List[str] = [
        "http://httpbin.org/ip",
        "https://httpbin.org/ip",
        "http://api.ipify.org",
        "https://api.ipify.org",
        "http://www.baidu.com",
        "http://www.qq.com",
    ]

    # 插件配置
    plugins_dir: str = "plugins"

    # CORS 配置 - Pydantic v2 会自动将逗号分隔的字符串解析为 List[str]
    cors_origins: List[str] = [
        "http://localhost:8080",
        "http://localhost:5173",
        "http://127.0.0.1:18081",
        "http://localhost:18081",
    ]

    @property
    def base_dir(self) -> str:
        return os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))


# 全局配置实例（启动时加载一次）
settings = Settings()