"""
配置管理模块
根据环境变量自动选择对应的配置类
"""
import os
from .base import Config
from .development import DevelopmentConfig
from .production import ProductionConfig
from .testing import TestingConfig
from .local import LocalConfig

# 配置映射字典
config_map = {
    'development': DevelopmentConfig,
    'production': ProductionConfig,
    'testing': TestingConfig,
    'local': LocalConfig,
    'default': DevelopmentConfig
}

def get_config():
    """
    根据环境变量获取对应的配置类
    
    环境变量: FLASK_ENV
    可选值: development, production, testing, local
    
    Returns:
        Config类: 对应环境的配置类
    """
    env = os.environ.get('FLASK_ENV', 'development')
    return config_map.get(env, config_map['default'])

# 导出配置类
__all__ = [
    'Config',
    'DevelopmentConfig', 
    'ProductionConfig',
    'TestingConfig',
    'LocalConfig',
    'get_config'
]