first commit

backend/app/auth.py

@@ -0,0 +1,56 @@
+from datetime import datetime, timedelta, timezone
+
+from fastapi import Depends, HTTPException, status
+from fastapi.security import HTTPAuthorizationCredentials, HTTPBearer
+from jose import JWTError, jwt
+from passlib.context import CryptContext
+from sqlalchemy.orm import Session
+
+from app.config import settings
+from app.database import get_db
+from app.models import AdminRole, AdminUser
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+security = HTTPBearer(auto_error=False)
+
+ALGORITHM = "HS256"
+
+
+def hash_password(password: str) -> str:
+    return pwd_context.hash(password)
+
+
+def verify_password(plain: str, hashed: str) -> bool:
+    return pwd_context.verify(plain, hashed)
+
+
+def create_access_token(subject: str) -> str:
+    expire = datetime.now(timezone.utc) + timedelta(minutes=settings.access_token_expire_minutes)
+    return jwt.encode({"sub": subject, "exp": expire}, settings.secret_key, algorithm=ALGORITHM)
+
+
+def get_current_admin(
+    credentials: HTTPAuthorizationCredentials | None = Depends(security),
+    db: Session = Depends(get_db),
+) -> AdminUser:
+    if credentials is None or credentials.scheme.lower() != "bearer":
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Not authenticated")
+    try:
+        payload = jwt.decode(credentials.credentials, settings.secret_key, algorithms=[ALGORITHM])
+        email: str | None = payload.get("sub")
+    except JWTError:
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Invalid token")
+    if not email:
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Invalid token")
+    user = db.query(AdminUser).filter(AdminUser.email == email).first()
+    if not user:
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="User not found")
+    return user
+
+
+def require_super_admin(
+    admin: AdminUser = Depends(get_current_admin),
+) -> AdminUser:
+    if admin.role != AdminRole.super_admin:
+        raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="Super admin required")
+    return admin