Fix some missing exceptions and validation handling for users

app/Http/Controllers/API/UserController.php

@@ -9,8 +9,11 @@ use Dingo\Api\Exception\StoreResourceFailedException;
 use Pterodactyl\Models;
 use Pterodactyl\Transformers\UserTransformer;
 use Pterodactyl\Repositories\UserRepository;
+
 use Pterodactyl\Exceptions\DisplayValidationException;
 use Pterodactyl\Exceptions\DisplayException;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
+use Symfony\Component\HttpKernel\Exception\BadRequestHttpException;
 
 /**
  * @Resource("Users")
@@ -61,7 +64,17 @@ class UserController extends BaseController
             }
         }
 
+        try {
+            if (!$query->first()) {
+                throw new NotFoundHttpException('No user by that ID was found.');
+            }
             return $query->first();
+        } catch (NotFoundHttpException $ex) {
+            throw $ex;
+        } catch (\Exception $ex) {
+            throw new BadRequestHttpException('There was an issue with the fields passed in the request.');
+        }
+
     }
 
     /**

app/Repositories/UserRepository.php

@@ -80,11 +80,17 @@ class UserRepository
             'totp_secret' => 'size:16'
         ]);
 
+        // Run validator, throw catchable and displayable exception if it fails.
+        // Exception includes a JSON result of failed validation rules.
+        if ($validator->fails()) {
+            throw new DisplayValidationException($validator->errors());
+        }
+
         if(array_key_exists('password', $data)) {
             $user['password'] = Hash::make($data['password']);
         }
 
-        return Models\User::find($id)->update($data);
+        return Models\User::findOrFail($id)->update($data);
     }
 
     /**