Add AuthResponseType for login/logout fields.

Author: dadish

src/Field/Auth/LoginField.php

@@ -7,12 +7,14 @@
 use Youshido\GraphQL\Type\Scalar\StringType;
 use Youshido\GraphQL\Type\NonNullType;
 use Youshido\GraphQL\Execution\ResolveInfo;
+use ProcessWire\GraphQL\Type\Object\AuthResponseType;
+use ProcessWire\WireData;
 
 class LoginField extends AbstractField {
 
   public function getType()
   {
-    return new StringType();
+    return new NonNullType(new AuthResponseType());
   }
 
   public function getName()
@@ -37,11 +39,15 @@ public function resolve($value, array $args, ResolveInfo $info)
     $username = $args['username'];
     $password = $args['password'];
     $user = $session->login($username, $password);
+    $response = new WireData();
     if (is_null($user)) {
-      return 'Failed to login';
+      $response->statusCode = 401;
+      $response->message = 'Wrong username and/or password.';
     } else {
-      return 'Login successful';
+      $response->statusCode = 200;
+      $response->message = 'Successful login!';
     }
+    return $response;
   }
 
 }

src/Type/Object/AuthResponseType.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace ProcessWire\GraphQL\Type\Object;
+
+use Youshido\GraphQL\Type\Object\AbstractObjectType;
+use Youshido\GraphQL\Type\NonNullType;
+use Youshido\GraphQL\Type\Scalar\IntType;
+use Youshido\GraphQL\Type\Scalar\StringType;
+
+class AuthResponseType extends AbstractObjectType {
+
+  public function getName()
+  {
+    return 'AuthResponse';
+  }
+
+  public function getDescription()
+  {
+    return 'Object type that represents the authentication response.';
+  }
+
+  public function build($config)
+  {
+    $config->addField('statusCode', [
+      'type' => new NonNullType(new IntType()),
+      'description' => 'The authentication status code. E.g. 200 if successful.',
+      'resolve' => function ($value) {
+        return (integer) $value->statusCode;
+      }
+    ]);
+
+    $config->addField('message', [
+      'type' => new NonNullType(new StringType()),
+      'description' => 'Homan readable message of the authentication reponse. E.g. "successful login!"',
+      'resolve' => function ($value) {
+        return (string) $value->message;
+      }
+    ]);
+  }
+
+}