feat: Update endpoint signup

endpoints/signup.post.py

@@ -3,20 +3,22 @@ from sqlalchemy.orm import Session
 from core.database import get_db
 from models.user import User
 from schemas.user import UserCreate, UserResponse
-from helpers.user_helpers import create_user
+from helpers.user_helpers import create_user, get_user_by_email
 
 router = APIRouter()
 
-@router.post("/signup", status_code=status.HTTP_201_CREATED, response_model=UserResponse)
-async def signup(
+@router.post("/signup", response_model=UserResponse, status_code=status.HTTP_201_CREATED)
+async def signup_user(
     user_data: UserCreate,
     db: Session = Depends(get_db)
 ):
-    """Create a new user account"""
-    user = create_user(db=db, user_data=user_data)
-    if not user:
+    existing_user = get_user_by_email(db, user_data.email)
+    if existing_user:
         raise HTTPException(
             status_code=status.HTTP_400_BAD_REQUEST,
-            detail="Unable to create user"
+            detail="Email already registered"
         )
-    return user
+    
+    new_user = create_user(db, user_data)
+    return new_user 
+     return user