refactor(config): 将配置管理从doppler_config.py迁移到settings.py

config/settings.py

@@ -0,0 +1,141 @@
+#!/usr/bin/env python3
+"""
+项目配置管理模块
+从环境变量 (.env) 文件中安全地加载配置和密钥。
+"""
+
+import os
+from typing import Optional, Dict, Any
+from pathlib import Path
+
+# 确保 .env 文件在项目根目录被加载
+try:
+    from dotenv import load_dotenv
+    # 构建到项目根目录的路径 (假设此文件在 config/ 目录下)
+    env_path = Path(__file__).resolve().parents[1] / '.env'
+    if env_path.exists():
+        load_dotenv(dotenv_path=env_path)
+    else:
+        print("Warning: .env file not found at project root. Relying on system environment variables.")
+except ImportError:
+    print("Warning: python-dotenv not installed. Relying on system environment variables.")
+    pass
+
+def get_secret(key: str, default: Optional[str] = None) -> str:
+    """
+    从环境变量获取密钥。
+
+    Args:
+        key: 密钥名称
+        default: 如果未找到密钥，则返回的默认值
+
+    Returns:
+        密钥值
+
+    Raises:
+        ValueError: 如果密钥未找到且没有提供默认值。
+    """
+    value = os.getenv(key)
+    if value is not None:
+        return value
+    
+    if default is not None:
+        return default
+        
+    raise ValueError(f"Required secret '{key}' not found in environment variables. "
+                     "Please ensure it is set in your .env file or system environment.")
+
+def get_rapidapi_key() -> str:
+    return get_secret('RAPIDAPI_KEY')
+
+def get_openrouter_key() -> str:
+    return get_secret('OPENROUTER_API_KEY_1')
+
+def get_google_api_key() -> str:
+    return get_secret('GOOGLE_API_KEY')
+
+def get_google_genai_config() -> Dict[str, Any]:
+    """
+    获取Google GenAI完整配置
+    """
+    use_vertex_ai = get_secret('GOOGLE_GENAI_USE_VERTEXAI', 'FALSE').upper() == 'TRUE'
+    return {
+        'api_key': get_secret('GOOGLE_API_KEY', '') if not use_vertex_ai else '',
+        'use_vertex_ai': use_vertex_ai,
+        'project_id': get_secret('GOOGLE_CLOUD_PROJECT_ID', ''),
+        'location': get_secret('GOOGLE_CLOUD_LOCATION', 'us-central1'),
+        'memory_bank_enabled': get_secret('VERTEX_MEMORY_BANK_ENABLED', 'TRUE').upper() == 'TRUE',
+        'service_account_key': get_secret('GOOGLE_SERVICE_ACCOUNT_KEY', '')
+    }
+
+def get_cloudflare_config() -> Dict[str, str]:
+    """
+    获取Cloudflare配置
+    """
+    return {
+        'account_id': get_secret('CLOUDFLARE_ACCOUNT_ID', ''),
+        'api_token': get_secret('CLOUDFLARE_API_TOKEN', ''),
+        'vectorize_index': 'autorag-shy-cherry-f1fb',
+        'embed_model': '@cf/baai/bge-m3',
+        'autorag_domain': 'autorag.seekkey.tech'
+    }
+
+def get_database_config() -> Dict[str, str]:
+    """
+    获取数据库配置
+    """
+    return {
+        'postgres_url': get_secret('POSTGRES_URL', ''),
+        'mongodb_url': get_secret('MONGODB_URL', ''),
+        'zilliz_url': get_secret('ZILLIZ_URL', ''),
+        'zilliz_token': get_secret('ZILLIZ_TOKEN', '')
+    }
+
+def validate_config(mode: str = "hybrid") -> bool:
+    """
+    验证必要的配置是否存在
+    """
+    print(f"🔧 Validating configuration for mode: {mode}")
+    try:
+        if mode == "openrouter":
+            get_openrouter_key()
+            print("✅ OpenRouter configuration is valid.")
+        elif mode == "google_adk":
+            config = get_google_genai_config()
+            if not config['use_vertex_ai']:
+                get_google_api_key()
+            else:
+                if not config['project_id']:
+                    raise ValueError("GOOGLE_CLOUD_PROJECT_ID is required for Vertex AI")
+            print("✅ Google ADK configuration is valid.")
+        elif mode == "hybrid":
+            # In hybrid, we just need at least one to be available
+            key_found = False
+            try:
+                get_openrouter_key()
+                print("✅ OpenRouter key found.")
+                key_found = True
+            except ValueError:
+                pass # It's ok if this one is missing
+            
+            try:
+                google_config = get_google_genai_config()
+                if not google_config['use_vertex_ai']:
+                    get_google_api_key()
+                print("✅ Google ADK key found.")
+                key_found = True
+            except ValueError:
+                pass # It's ok if this one is missing
+
+            if not key_found:
+                 raise ValueError("In hybrid mode, at least one AI provider key (OpenRouter or Google) must be configured.")
+            print("✅ Hybrid mode configuration is valid.")
+        
+        return True
+    except ValueError as e:
+        print(f"❌ Configuration validation failed: {e}")
+        return False
+
+if __name__ == "__main__":
+    print("🔧 Running configuration validation...")
+    validate_config()