Add signup endpoint with token generation

app/routers/auth.py

@@ -10,14 +10,16 @@ from app.models.user import User
 from app.schemas.auth import ChangePassword, Login
 from app.schemas.password import PasswordReset, PasswordResetConfirm
 from app.schemas.token import Token, TokenPayload, TokenRefresh
+from app.schemas.user import User as UserSchema, UserCreate
 from app.services.auth import (
-    authenticate_user, 
+    authenticate_user,
-    create_tokens_for_user, 
+    create_tokens_for_user,
-    generate_password_reset_token, 
+    generate_password_reset_token,
-    reset_password, 
+    reset_password,
     verify_password_reset_token
 )
-from app.utils.security import verify_password
+from app.services.user import create_user
+from app.utils.security import get_password_hash, verify_password
 
 router = APIRouter()
 
@@ -169,12 +171,41 @@ def change_password(
             status_code=status.HTTP_400_BAD_REQUEST,
             detail="Incorrect password"
         )
-    
+
     # Update password
     current_user.hashed_password = get_password_hash(password_change.new_password)
     db.add(current_user)
     db.commit()
-    
+
     return {
         "message": "Password has been changed successfully"
-    }
+    }
+
+
+@router.post("/signup", response_model=Token, status_code=status.HTTP_201_CREATED)
+def signup(
+    user_in: UserCreate,
+    db: Session = Depends(get_db)
+):
+    """
+    Create new user account and return access token.
+    """
+    # Check if the user already exists
+    user = db.query(User).filter(User.email == user_in.email).first()
+    if user:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="Email already registered"
+        )
+
+    # Create new user
+    user = create_user(db, user_in=user_in)
+    if not user:
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail="Error creating user account"
+        )
+
+    # Generate tokens for the newly created user
+    tokens = create_tokens_for_user(user.id)
+    return tokens