Initial commit

hsbg_ai/backend/database/db.py

@@ -0,0 +1,33 @@
+"""Connexion et sessions de base de données async."""
+from sqlalchemy.ext.asyncio import AsyncSession, create_async_engine, async_sessionmaker
+from backend.config.settings import get_settings
+from backend.database.models import Base
+
+settings = get_settings()
+
+# Convertir l'URL SQLite en version async
+DB_URL = settings.database_url
+if DB_URL.startswith("sqlite:///"):
+    DB_URL = DB_URL.replace("sqlite:///", "sqlite+aiosqlite:///")
+
+engine = create_async_engine(DB_URL, echo=settings.debug, pool_pre_ping=True)
+AsyncSessionLocal = async_sessionmaker(engine, class_=AsyncSession, expire_on_commit=False)
+
+
+async def init_db():
+    """Crée toutes les tables si elles n'existent pas."""
+    async with engine.begin() as conn:
+        await conn.run_sync(Base.metadata.create_all)
+
+
+async def get_db():
+    """Dépendance FastAPI - fournit une session DB."""
+    async with AsyncSessionLocal() as session:
+        try:
+            yield session
+            await session.commit()
+        except Exception:
+            await session.rollback()
+            raise
+        finally:
+            await session.close()