[更新]增加微信商户代金券类接口支持

We.php

@@ -54,6 +54,7 @@ use WeChat\Exceptions\InvalidInstanceException;
  * @method \WePay\Bill WePayBill($options = []) static 微信商户账单及评论
  * @method \WePay\Order WePayOrder($options = []) static 微信商户订单
  * @method \WePay\Refund WePayRefund($options = []) static 微信商户退款
+ * @method \WePay\Coupon WePayCoupon($options = []) static 微信商户代金券
  * @method \WePay\Redpack WePayRedpack($options = []) static 微信红包支持
  * @method \WePay\Transfers WePayTransfers($options = []) static 微信商户打款到零钱
  * @method \WePay\TransFresBank WePayTransFresBank($options = []) static 微信商户打款到银行卡

WePay/Coupon.php

@@ -0,0 +1,62 @@
+<?php
+
+// +----------------------------------------------------------------------
+// | WeChatDeveloper
+// +----------------------------------------------------------------------
+// | 版权所有 2014~2018 广州楚才信息科技有限公司 [ http://www.cuci.cc ]
+// +----------------------------------------------------------------------
+// | 官方网站: http://think.ctolog.com
+// +----------------------------------------------------------------------
+// | 开源协议 ( https://mit-license.org )
+// +----------------------------------------------------------------------
+// | github开源项目：https://github.com/zoujingli/WeChatDeveloper
+// +----------------------------------------------------------------------
+
+namespace WePay;
+
+use WeChat\Contracts\BasicPay;
+
+/**
+ * 微信商户代金券
+ * Class Coupon
+ * @package WePay
+ */
+class Coupon extends BasicPay
+{
+    /**
+     * 发放代金券
+     * @param array $options
+     * @return array
+     * @throws \WeChat\Exceptions\InvalidResponseException
+     */
+    public function create(array $options)
+    {
+        $url = "https://api.mch.weixin.qq.com/mmpaymkttransfers/send_coupon";
+        return $this->callPostApi($url, $options, true);
+    }
+
+    /**
+     * 查询代金券批次
+     * @param array $options
+     * @return array
+     * @throws \WeChat\Exceptions\InvalidResponseException
+     */
+    public function queryStock(array $options)
+    {
+        $url = "https://api.mch.weixin.qq.com/mmpaymkttransfers/query_coupon_stock";
+        return $this->callPostApi($url, $options, false);
+    }
+
+    /**
+     * 查询代金券信息
+     * @param array $options
+     * @return array
+     * @throws \WeChat\Exceptions\InvalidResponseException
+     */
+    public function queryInfo(array $options)
+    {
+        $url = "https://api.mch.weixin.qq.com/mmpaymkttransfers/query_coupon_stock";
+        return $this->callPostApi($url, $options, false);
+    }
+
+}