first upload all files

Modules/Coupon/Http/Controllers/Admin/CouponController.php

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+<?php
+
+namespace Modules\Coupon\Http\Controllers\Admin;
+
+use Modules\Coupon\Entities\Coupon;
+use Modules\Admin\Traits\HasCrudActions;
+use Modules\Coupon\Http\Requests\SaveCouponRequest;
+
+class CouponController
+{
+    use HasCrudActions;
+
+    /**
+     * Model for the resource.
+     *
+     * @var string
+     */
+    protected $model = Coupon::class;
+
+    /**
+     * Label of the resource.
+     *
+     * @var string
+     */
+    protected $label = 'coupon::coupons.coupon';
+
+    /**
+     * View path of the resource.
+     *
+     * @var string
+     */
+    protected $viewPath = 'coupon::admin.coupons';
+
+    /**
+     * Form requests for the resource.
+     *
+     * @var array|string
+     */
+    protected $validation = SaveCouponRequest::class;
+}