Improve the frontend 3

services/procurement/app/core/database.py

@@ -0,0 +1,47 @@
+# ================================================================
+# services/procurement/app/core/database.py
+# ================================================================
+"""
+Database connection and session management for Procurement Service
+"""
+
+from shared.database.base import DatabaseManager
+from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker
+from .config import settings
+
+# Initialize database manager
+database_manager = DatabaseManager(
+    database_url=settings.DATABASE_URL,
+    echo=settings.DEBUG
+)
+
+# Create async session factory
+AsyncSessionLocal = async_sessionmaker(
+    database_manager.async_engine,
+    class_=AsyncSession,
+    expire_on_commit=False,
+    autocommit=False,
+    autoflush=False,
+)
+
+
+async def get_db() -> AsyncSession:
+    """
+    Dependency to get database session.
+    Used in FastAPI endpoints via Depends(get_db).
+    """
+    async with AsyncSessionLocal() as session:
+        try:
+            yield session
+        finally:
+            await session.close()
+
+
+async def init_db():
+    """Initialize database (create tables if needed)"""
+    await database_manager.create_all()
+
+
+async def close_db():
+    """Close database connections"""
+    await database_manager.close()