Primi files backend

backend/app/core/deps.py

@@ -0,0 +1,56 @@
+from typing import AsyncGenerator
+from fastapi import Depends, HTTPException, status
+from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy import select
+from app.core.database import AsyncSessionLocal
+from app.core.security import decode_token
+
+bearer_scheme = HTTPBearer()
+
+
+async def get_db() -> AsyncGenerator[AsyncSession, None]:
+    async with AsyncSessionLocal() as session:
+        try:
+            yield session
+        finally:
+            await session.close()
+
+
+async def get_current_user(
+    credentials: HTTPAuthorizationCredentials = Depends(bearer_scheme),
+    db: AsyncSession = Depends(get_db),
+):
+    from app.models.user import User
+
+    token = credentials.credentials
+    payload = decode_token(token)
+
+    if not payload or payload.get("type") != "access":
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Token non valido o scaduto",
+        )
+
+    user_id = payload.get("sub")
+    result = await db.execute(select(User).where(User.id == int(user_id)))
+    user = result.scalar_one_or_none()
+
+    if not user or not user.is_active:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Utente non trovato o disabilitato",
+        )
+
+    return user
+
+
+def require_roles(*roles: str):
+    async def checker(current_user=Depends(get_current_user)):
+        if current_user.role not in roles:
+            raise HTTPException(
+                status_code=status.HTTP_403_FORBIDDEN,
+                detail="Permessi insufficienti",
+            )
+        return current_user
+    return checker