基本结构以及计算降雨栅格

app/config/settings.py

@@ -0,0 +1,65 @@
+"""
+配置加载器 - 根据环境自动加载对应配置
+"""
+import os
+from typing import Type
+from .base_config import BaseConfig, EnvironmentEnum
+from .development import DevelopmentConfig
+from .production import ProductionConfig
+
+
+def get_config_class(environment: str = None) -> Type[BaseConfig]:
+    """根据环境获取配置类
+    
+    Args:
+        environment: 环境名称 (development/production)
+        
+    Returns:
+        对应的配置类
+    """
+    if environment is None:
+        environment = os.getenv("ENVIRONMENT", "development")
+    
+    config_map = {
+        EnvironmentEnum.DEVELOPMENT: DevelopmentConfig,
+        EnvironmentEnum.PRODUCTION: ProductionConfig,
+    }
+    
+    try:
+        env_enum = EnvironmentEnum(environment)
+        return config_map[env_enum]
+    except ValueError:
+        print(f"警告: 未知环境 '{environment}'，使用默认开发环境配置")
+        return DevelopmentConfig
+
+
+def load_config(environment: str = None) -> BaseConfig:
+    """加载配置
+    
+    Args:
+        environment: 环境名称
+        
+    Returns:
+        配置实例
+    """
+    config_class = get_config_class(environment)
+    return config_class()
+
+
+# 全局配置实例（延迟加载）
+_config_instance = None
+
+
+def get_settings() -> BaseConfig:
+    """获取全局配置实例（单例模式）"""
+    global _config_instance
+    if _config_instance is None:
+        environment = os.getenv("ENVIRONMENT", None)
+        _config_instance = load_config(environment)
+    return _config_instance
+
+
+def reload_config(environment: str = None):
+    """重新加载配置"""
+    global _config_instance
+    _config_instance = load_config(environment)