[Apple] Add support for a user as an associative array in Apple provi…

…der (#644)

Co-authored-by: Marco Marassi <[email protected]>

Provider.php

@@ -202,19 +202,15 @@ public function user()
      */
     protected function mapUserToObject(array $user)
     {
-        $value = trim((string) $this->request->input('user'));
-
-        if ($value !== '') {
-            $userRequest = json_decode($value, true);
-
-            if (isset($userRequest['name'])) {
-                $user['name'] = $userRequest['name'];
-                $fullName = trim(
-                    ($user['name']['firstName'] ?? '')
-                    .' '
-                    .($user['name']['lastName'] ?? '')
-                );
-            }
+        $userRequest = $this->getUserRequest();
+
+        if (isset($userRequest['name'])) {
+            $user['name'] = $userRequest['name'];
+            $fullName = trim(
+                ($user['name']['firstName'] ?? '')
+                .' '
+                .($user['name']['lastName'] ?? '')
+            );
         }
 
         return (new User())
@@ -225,4 +221,21 @@ protected function mapUserToObject(array $user)
                 'email' => $user['email'] ?? null,
             ]);
     }
+
+    private function getUserRequest(): array
+    {
+        $value = $this->request->input('user');
+
+        if (is_array($value)) {
+            return $value;
+        }
+
+        $value = trim((string) $value);
+
+        if ($value === '') {
+            return [];
+        }
+
+        return json_decode($value, true);
+    }
 }