add card message type

src/Kernel/Messages/Card.php

@@ -0,0 +1,53 @@
+<?php
+
+/*
+ * This file is part of the overtrue/wechat.
+ *
+ * (c) overtrue <[email protected]>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+/**
+ * Card.php.
+ *
+ * @author    overtrue <[email protected]>
+ * @copyright 2015 overtrue <[email protected]>
+ *
+ * @see      https://github.com/overtrue
+ * @see      http://overtrue.me
+ */
+
+namespace EasyWeChat\Kernel\Messages;
+
+/**
+ * Class Card.
+ */
+class Card extends Message
+{
+
+    /**
+     * Message type.
+     *
+     * @var string
+     */
+    protected $type = 'wxcard';
+
+    /**
+     * Properties.
+     *
+     * @var array
+     */
+    protected $properties = ['card_id'];
+
+    /**
+     * Material constructor.
+     *
+     * @param string $cardId
+     */
+    public function __construct($cardId)
+    {
+        $this->set('card_id', $cardId);
+    }
+}

src/OfficialAccount/CustomerService/Transformer.php

@@ -183,4 +183,24 @@ public function transformMaterial(Message $message)
             ],
         ];
     }
+
+    /**
+     * Transform card message.
+     *
+     * @param Message $message
+     *
+     * @return array
+     */
+    public function transformCard(Message $message)
+    {
+        $type = $message->getType();
+
+        return [
+            'msgtype' => $type,
+            $type => [
+                'card_id' => $message->get('card_id'),
+            ],
+        ];
+    }
+
 }