🎉初次提交

database/creator.py

@@ -0,0 +1,79 @@
+from typing import AsyncGenerator
+from sqlalchemy.ext.asyncio import AsyncSession, create_async_engine, async_sessionmaker
+from .base import Base
+from config import config_manager
+from loguru import logger
+
+
+class DatabaseManager:
+    def __init__(self):
+        self.engine = None
+        self.async_session_maker = None
+        self._config = None
+
+    def _get_db_config(self):
+        """获取数据库配置"""
+        if self._config is None:
+            self._config = config_manager.get_settings().database
+        return self._config
+
+    async def init_db(self):
+        """初始化数据库连接"""
+        db_config = self._get_db_config()
+        
+        logger.info("正在初始化数据库连接...")
+        try:
+            self.engine = create_async_engine(
+                db_config.url,
+                echo=db_config.echo,
+                pool_size=db_config.pool_size,
+                max_overflow=db_config.max_overflow,
+                pool_timeout=db_config.pool_timeout,
+                pool_recycle=db_config.pool_recycle,
+                future=True
+            )
+
+        
+            self.async_session_maker = async_sessionmaker(
+                self.engine, class_=AsyncSession, expire_on_commit=False
+            )
+
+        # 创建所有表
+            async with self.engine.begin() as conn:
+                await conn.run_sync(Base.metadata.create_all)
+        except Exception as e:
+            logger.error(f"数据库连接初始化失败: {e}")
+            logger.error(f"数据库连接URL: {db_config.url}")
+            logger.error(f"数据库连接配置: {db_config}")
+            logger.error(f"请启动config_tui.py来配置数据库连接")
+            raise 
+        logger.info("数据库连接初始化完成")
+
+    async def close_db(self):
+        """关闭数据库连接"""
+        if self.engine:
+            logger.info("正在关闭数据库连接...")
+            await self.engine.dispose()
+            logger.info("数据库连接已关闭")
+
+    async def get_session(self) -> AsyncGenerator[AsyncSession, None]:
+        """获取数据库会话"""
+        if not self.async_session_maker:
+            raise RuntimeError("Database not initialized. Call init_db() first.")
+
+        async with self.async_session_maker() as session:
+            try:
+                yield session
+            finally:
+                await session.close()
+
+
+# 全局数据库管理器实例
+db_manager = DatabaseManager()
+
+
+# FastAPI 依赖函数
+async def get_db_session() -> AsyncGenerator[AsyncSession, None]:
+    """获取数据库会话的依赖函数，用于FastAPI路由"""
+    async for session in db_manager.get_session():
+        yield session