Init first files

backend/app/core/deps.py

@@ -0,0 +1,42 @@
+from fastapi import Depends, HTTPException, status
+from fastapi.security import HTTPAuthorizationCredentials, HTTPBearer
+from jose import JWTError, jwt
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+from app.core.config import get_settings
+from app.core.db import get_db
+from app.models.models import User
+
+settings = get_settings()
+bearer = HTTPBearer(auto_error=False)
+
+
+async def get_current_user(
+    credentials: HTTPAuthorizationCredentials | None = Depends(bearer),
+    db: AsyncSession = Depends(get_db),
+) -> User:
+    if not credentials:
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Missing token")
+    token = credentials.credentials
+    try:
+        payload = jwt.decode(token, settings.jwt_secret_key, algorithms=[settings.jwt_algorithm])
+    except JWTError as exc:
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Invalid token") from exc
+
+    if payload.get("type") != "access":
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Invalid token type")
+
+    user_id = payload.get("sub")
+    user = await db.scalar(select(User).where(User.id == int(user_id)))
+    if not user:
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="User not found")
+    return user
+
+
+def require_roles(*roles: str):
+    async def role_dependency(user: User = Depends(get_current_user)) -> User:
+        if user.role not in roles:
+            raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="Forbidden")
+        return user
+
+    return role_dependency