retrieve also user roles on login

backend/controllers/auth.controller.js

@@ -48,14 +48,11 @@ exports.login = async (req, res) => {
         const user = await User.findOne({
             where: {
                 authId: auth.id
-            }
+            },
+            include: ['roles']
         });
 
-        const authorities = [];
-        const roles = await user.getRoles();
-        for (let i = 0; i < roles.length; i++) {
-            authorities.push("ROLE_" + roles[i].name.toUpperCase());
-        }
+        const authorities = user.roles.map(role => "ROLE_" + role.name.toUpperCase());
 
         return res.status(200).send({
             id: user.id,