完成后端数据库连接配置

backend/app/config.py

@@ -6,26 +6,50 @@ class Settings(BaseSettings):
     APP_NAME: str = "FilesReadSystem"
     DEBUG: bool = True
     API_V1_STR: str = "/api/v1"
-    
-    # 数据库
-    MONGODB_URL: str
-    MONGODB_DB_NAME: str
-    REDIS_URL: str
-    
-    # AI 相关
-    LLM_API_KEY: str
-    LLM_BASE_URL: str
-    LLM_MODEL_NAME: str
-    
-    # 文件路径
+
+    # ==================== 数据库配置 ====================
+
+    # MongoDB 配置 (非结构化数据存储)
+    MONGODB_URL: str = "mongodb://localhost:27017"
+    MONGODB_DB_NAME: str = "document_system"
+
+    # MySQL 配置 (结构化数据存储)
+    MYSQL_HOST: str = "localhost"
+    MYSQL_PORT: int = 3306
+    MYSQL_USER: str = "root"
+    MYSQL_PASSWORD: str = ""
+    MYSQL_DATABASE: str = "document_system"
+    MYSQL_CHARSET: str = "utf8mb4"
+
+    # Redis 配置 (缓存/任务队列)
+    REDIS_URL: str = "redis://localhost:6379/0"
+
+    # ==================== AI 相关配置 ====================
+    LLM_API_KEY: str = ""
+    LLM_BASE_URL: str = "https://api.minimax.chat"
+    LLM_MODEL_NAME: str = "MiniMax-Text-01"
+
+    # ==================== 文件路径配置 ====================
     BASE_DIR: Path = Path(__file__).resolve().parent.parent.parent
     UPLOAD_DIR: str = "data/uploads"
-    
+
+    # ==================== RAG/向量数据库配置 ====================
+    CHROMADB_PERSIST_DIR: str = "data/chromadb"
+
     # 允许 Pydantic 从 .env 文件读取
     model_config = SettingsConfigDict(
-        env_file=Path(__file__).parent.parent / ".env", 
+        env_file=Path(__file__).parent.parent / ".env",
         env_file_encoding='utf-8',
         extra='ignore'
     )
 
+    @property
+    def mysql_url(self) -> str:
+        """生成MySQL连接URL"""
+        return (
+            f"mysql+pymysql://{self.MYSQL_USER}:{self.MYSQL_PASSWORD}"
+            f"@{self.MYSQL_HOST}:{self.MYSQL_PORT}/{self.MYSQL_DATABASE}"
+            f"?charset={self.MYSQL_CHARSET}"
+        )
+
 settings = Settings()