#!/usr/bin/env python3
"""
配置管理器
"""

import yaml
from pathlib import Path

class ConfigManager:
    """配置管理类"""
    
    # 默认配置文件路径
    DEFAULT_CONFIG_FILE = Path(__file__).parent.parent / "default_config.yaml"
    
    @staticmethod
    def load_config(filename):
        """加载配置文件"""
        with open(filename, 'r', encoding='utf-8') as f:
            config = yaml.safe_load(f)
        return config
    
    @staticmethod
    def save_config(config, filename):
        """保存配置文件"""
        # 确保目录存在
        Path(filename).parent.mkdir(parents=True, exist_ok=True)
        with open(filename, 'w', encoding='utf-8') as f:
            yaml.dump(config, f, default_flow_style=False, allow_unicode=True)
    
    @staticmethod
    def load_default_config():
        """加载默认配置文件"""
        if ConfigManager.DEFAULT_CONFIG_FILE.exists():
            return ConfigManager.load_config(ConfigManager.DEFAULT_CONFIG_FILE)
        return None
    
    @staticmethod
    def save_default_config(config):
        """保存默认配置文件"""
        ConfigManager.save_config(config, ConfigManager.DEFAULT_CONFIG_FILE)