GraphQL - Add viewer query

Refs #2644

src/ApiBundle/GraphQL/Auth.php

@@ -6,7 +6,6 @@ namespace Chamilo\ApiBundle\GraphQL;
 use Chamilo\CoreBundle\Framework\Container;
 use Chamilo\UserBundle\Entity\User;
 use Firebase\JWT\JWT;
-use Overblog\GraphQLBundle\Error\UserError;
 
 /**
  * Class Auth
@@ -21,16 +20,15 @@ class Auth
      * @param string $password
      *
      * @return string
+     * @throws \Exception
      */
     public function getUserToken($username, $password): string
     {
-        $userRepo = Container::getEntityManager()->getRepository('ChamiloUserBundle:User');
-
         /** @var User $user */
-        $user = $userRepo->findOneByUsername($username);
+        $user = Container::getUserManager()->findUserBy(['username' => $username]);
 
         if (!$user) {
-            throw new UserError(get_lang('NoUser'));
+            throw new \Exception(get_lang('NoUser'));
         }
 
         $encoder = Container::$container->get('chamilo_user.security.encoder');
@@ -41,7 +39,7 @@ class Auth
         );
 
         if (!$isValid) {
-            throw new UserError(get_lang('InvalidId'));
+            throw new \Exception(get_lang('InvalidId'));
         }
 
         return self::generateToken($user->getId());
@@ -52,7 +50,7 @@ class Auth
      *
      * @return string
      */
-    public static function generateToken($userId): string
+    private static function generateToken($userId): string
     {
         $secret = Container::$container->getParameter('secret');
         $time = time();
@@ -68,12 +66,38 @@ class Auth
         return JWT::encode($payload, $secret, 'HS384');
     }
 
+    /**
+     * @param \ArrayObject $context
+     *
+     * @throws \Exception
+     */
+    public static function checkAuthorization(\ArrayObject $context): void
+    {
+        $header = Container::getRequest()->headers->get('Authorization');
+        $token = str_replace(['Bearer ', 'bearer '], '', $header);
+
+        if (empty($token)) {
+            throw new \Exception(get_lang('NotAllowed'));
+        }
+
+        $tokenData = Auth::getTokenData($token);
+
+        /** @var User $user */
+        $user = Container::getUserManager()->find($tokenData['user']);
+
+        if (!$user) {
+            throw new \Exception(get_lang('NotAllowed'));
+        }
+
+        $context->offsetSet('user', $user);
+    }
+
     /**
      * @param string $token
      *
      * @return array
      */
-    public static function getTokenData($token): array
+    private static function getTokenData($token): array
     {
         $secret = Container::$container->getParameter('secret');
         $jwt = JWT::decode($token, $secret, ['HS384']);

src/ApiBundle/GraphQL/Resolver/RootResolver.php

@@ -3,9 +3,11 @@
 
 namespace Chamilo\ApiBundle\GraphQL\Resolver;
 
-use Chamilo\CoreBundle\Framework\Container;
+use Chamilo\ApiBundle\GraphQL\Auth;
+use Chamilo\UserBundle\Entity\User;
 use Overblog\GraphQLBundle\Definition\Resolver\AliasedInterface;
 use Overblog\GraphQLBundle\Definition\Resolver\ResolverInterface;
+use Overblog\GraphQLBundle\Error\UserError;
 
 /**
  * Class RootResolver
@@ -26,6 +28,26 @@ class RootResolver implements ResolverInterface, AliasedInterface
     public static function getAliases()
     {
         return [
+            'resolverViewer' => 'viewer',
         ];
     }
-}
+
+    /**
+     * @param \ArrayObject $context
+     *
+     * @return User
+     */
+    public function resolverViewer(\ArrayObject $context)
+    {
+        try {
+            Auth::checkAuthorization($context);
+        } catch (\Exception $exception) {
+            throw new UserError($exception->getMessage());
+        }
+
+        /** @var User $user */
+        $user = $context->offsetGet('user');
+
+        return $user;
+    }
+}

src/ApiBundle/GraphQL/Resolver/UserResolver.php

@@ -0,0 +1,59 @@
+<?php
+/* For licensing terms, see /license.txt */
+
+namespace Chamilo\ApiBundle\GraphQL\Resolver;
+
+use Chamilo\CoreBundle\Framework\Container;
+use Chamilo\UserBundle\Entity\User;
+use Overblog\GraphQLBundle\Definition\Argument;
+use Overblog\GraphQLBundle\Definition\Resolver\AliasedInterface;
+use Overblog\GraphQLBundle\Definition\Resolver\ResolverInterface;
+
+/**
+ * Class UserResolver
+ *
+ * @package Chamilo\ApiBundle\GraphQL\Resolver
+ */
+class UserResolver implements ResolverInterface, AliasedInterface
+{
+    public const IMAGE_SIZE_TINY = 16;
+    public const IMAGE_SIZE_SMALL = 32;
+    public const IMAGE_SIZE_MEDIUM = 64;
+    public const IMAGE_SIZE_BIG = 128;
+
+    /**
+     * Returns methods aliases.
+     *
+     * For instance:
+     * array('myMethod' => 'myAlias')
+     *
+     * @return array
+     */
+    public static function getAliases(): array
+    {
+        return [
+            'resolveUserPicture' => 'user_picture',
+        ];
+    }
+
+    /**
+     * @param int          $size
+     * @param \ArrayObject $context
+     *
+     * @return string
+     */
+    public function resolveUserPicture($size, \ArrayObject $context): string
+    {
+        /** @var User $user */
+        $user = $context->offsetGet('user');
+
+        if (!$user) {
+            return null;
+        }
+
+        $path = $user->getAvatarOrAnonymous((int) $size);
+        $url = Container::getAsset()->getUrl($path);
+
+        return $url;
+    }
+}

src/ApiBundle/GraphQL/Type/Enum.types.yaml

@@ -0,0 +1,35 @@
+UserStatus:
+    type: enum
+    config:
+        description: "One of the statuses for the user."
+        values:
+            TEACHER:
+                description: "Global status of a user: Course Manager."
+                value: '@=constant("Chamilo\\UserBundle\\Entity\\User::TEACHER")'
+            SESSION_ADMIN:
+                description: "Global status of a user: Session Admin."
+                value: '@=constant("Chamilo\\UserBundle\\Entity\\User::SESSION_ADMIN")'
+            DRH:
+                description: "Global status of a user: Human Ressource Manager."
+                value: '@=constant("Chamilo\\UserBundle\\Entity\\User::DRH")'
+            STUDENT:
+                description: "Global status of a user: Student."
+                value: '@=constant("Chamilo\\UserBundle\\Entity\\User::STUDENT")'
+
+UserImageSize:
+    type: enum
+    config:
+        description: 'One of the sizes for the user picture.'
+        values:
+            SIZE_TINY:
+                description: 'Image in small size: 16px.'
+                value: '@=constant("Chamilo\\ApiBundle\\GraphQL\\Resolver\\UserResolver::IMAGE_SIZE_TINY")'
+            SIZE_SMALL:
+                description: 'Image in small size: 32px.'
+                value: '@=constant("Chamilo\\ApiBundle\\GraphQL\\Resolver\\UserResolver::IMAGE_SIZE_SMALL")'
+            SIZE_MEDIUM:
+                description: 'Image in small size: 64px.'
+                value: '@=constant("Chamilo\\ApiBundle\\GraphQL\\Resolver\\UserResolver::IMAGE_SIZE_MEDIUM")'
+            SIZE_BIG:
+                description: 'Image in small size: 128px.'
+                value: '@=constant("Chamilo\\ApiBundle\\GraphQL\\Resolver\\UserResolver::IMAGE_SIZE_BIG")'

src/ApiBundle/GraphQL/Type/Query.types.yaml

@@ -3,6 +3,35 @@ Query:
     config:
         description: "GraphQL queries."
         fields:
-            user:
+            viewer:
                 description: "A registered user on the platform."
-                type: "String"
+                type: "User"
+                resolve: "@=resolver('viewer', [context])"
+
+User:
+    type: object
+    config:
+        description: "Registered user."
+        fields:
+            id:
+                description: "The unique ID of the user."
+                type: "Int"
+            firstname:
+                type: "String"
+            lastname:
+                type: "String"
+            username:
+                type: "String"
+            email:
+                type: "String"
+            officialCode:
+                type: "String"
+            status:
+                type: "UserStatus"
+            picture:
+                type: "String"
+                args:
+                    size:
+                        type: "UserImageSize"
+                        defaultValue: '@=constant("Chamilo\\ApiBundle\\GraphQL\\Resolver\\UserResolver::IMAGE_SIZE_SMALL")'
+                resolve: "@=resolver('user_picture', [args['size'], context])"