update: api version

app/Http/Controllers/V1/User/CouponController.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace App\Http\Controllers\V1\User;
+
+use App\Http\Controllers\Controller;
+use App\Services\CouponService;
+use Illuminate\Http\Request;
+
+class CouponController extends Controller
+{
+    public function check(Request $request)
+    {
+        if (empty($request->input('code'))) {
+            abort(500, __('Coupon cannot be empty'));
+        }
+        $couponService = new CouponService($request->input('code'));
+        $couponService->setPlanId($request->input('plan_id'));
+        $couponService->setUserId($request->user['id']);
+        $couponService->check();
+        return response([
+            'data' => $couponService->getCoupon()
+        ]);
+    }
+}