first upload all files

Modules/Coupon/Database/Factories/ModelFactory.php

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+<?php
+
+use Modules\Coupon\Entities\Coupon;
+
+$factory->define(Coupon::class, function (Faker\Generator $faker) {
+    return [
+        'name' => $faker->word(),
+        'code' => $faker->word(),
+        'value' => $faker->randomNumber(),
+        'is_percent' => $faker->boolean(),
+        'is_active' => $faker->boolean(),
+    ];
+});

Modules/Coupon/Database/Migrations/2018_02_04_150917488267_create_coupons_table.php

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+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class CreateCouponsTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('coupons', function (Blueprint $table) {
+            $table->increments('id');
+            $table->string('code')->index();
+            $table->decimal('value', 18, 4)->unsigned()->nullable();
+            $table->boolean('is_percent');
+            $table->boolean('free_shipping');
+            $table->decimal('minimum_spend', 18, 4)->unsigned()->nullable();
+            $table->decimal('maximum_spend', 18, 4)->unsigned()->nullable();
+            $table->integer('usage_limit_per_coupon')->unsigned()->nullable();
+            $table->integer('usage_limit_per_customer')->unsigned()->nullable();
+            $table->integer('used')->default(0);
+            $table->boolean('is_active');
+            $table->date('start_date')->nullable();
+            $table->date('end_date')->nullable();
+            $table->softDeletes();
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('coupons');
+    }
+}

Modules/Coupon/Database/Migrations/2018_02_04_150917488698_create_coupon_translations_table.php

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+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class CreateCouponTranslationsTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('coupon_translations', function (Blueprint $table) {
+            $table->increments('id');
+            $table->integer('coupon_id')->unsigned();
+            $table->string('locale');
+            $table->string('name');
+
+            $table->unique(['coupon_id', 'locale']);
+            $table->foreign('coupon_id')->references('id')->on('coupons')->onDelete('cascade');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('coupon_translations');
+    }
+}

Modules/Coupon/Database/Migrations/2018_03_11_181317_create_coupon_products_table.php

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+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class CreateCouponProductsTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('coupon_products', function (Blueprint $table) {
+            $table->integer('coupon_id')->unsigned();
+            $table->integer('product_id')->unsigned();
+            $table->boolean('exclude')->default(false);
+
+            $table->primary(['coupon_id', 'product_id']);
+            $table->foreign('coupon_id')->references('id')->on('coupons')->onDelete('cascade');
+            $table->foreign('product_id')->references('id')->on('products')->onDelete('cascade');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('coupon_products');
+    }
+}

Modules/Coupon/Database/Migrations/2018_03_15_091937_create_coupon_categories_table.php

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+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class CreateCouponCategoriesTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('coupon_categories', function (Blueprint $table) {
+            $table->integer('coupon_id')->unsigned();
+            $table->integer('category_id')->unsigned();
+            $table->boolean('exclude')->default(false);
+
+            $table->primary(['coupon_id', 'category_id', 'exclude']);
+            $table->foreign('coupon_id')->references('id')->on('coupons')->onDelete('cascade');
+            $table->foreign('category_id')->references('id')->on('categories')->onDelete('cascade');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('coupon_categories');
+    }
+}

Modules/Coupon/Database/Seeders/CouponDatabaseSeeder.php

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+<?php
+
+namespace Modules\Coupon\Database\Seeders;
+
+use Illuminate\Database\Seeder;
+use Modules\Coupon\Entities\Coupon;
+
+class CouponDatabaseSeeder extends Seeder
+{
+    /**
+     * Run the database seeds.
+     *
+     * @return void
+     */
+    public function run()
+    {
+        factory(Coupon::class, 10)->create();
+    }
+}