first upload all files

Modules/Order/Http/Controllers/Admin/OrderController.php

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+<?php
+
+namespace Modules\Order\Http\Controllers\Admin;
+
+use Modules\Order\Entities\Order;
+use Modules\Admin\Traits\HasCrudActions;
+
+class OrderController
+{
+    use HasCrudActions;
+
+    /**
+     * Model for the resource.
+     *
+     * @var string
+     */
+    protected $model = Order::class;
+
+    /**
+     * The relations to eager load on every query.
+     *
+     * @var array
+     */
+    protected $with = ['products', 'coupon', 'taxes'];
+
+    /**
+     * Label of the resource.
+     *
+     * @var string
+     */
+    protected $label = 'order::orders.order';
+
+    /**
+     * View path of the resource.
+     *
+     * @var string
+     */
+    protected $viewPath = 'order::admin.orders';
+}

Modules/Order/Http/Controllers/Admin/OrderEmailController.php

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+<?php
+
+namespace Modules\Order\Http\Controllers\Admin;
+
+use Modules\Order\Entities\Order;
+use Modules\Checkout\Mail\Invoice;
+use Illuminate\Support\Facades\Mail;
+
+class OrderEmailController
+{
+    /**
+     * Store a newly created resource in storage.
+     *
+     * @param \Modules\Order\Entities\Order $order
+     * @return \Illuminate\Http\Response
+     */
+    public function store(Order $order)
+    {
+        Mail::to($order->customer_email)
+            ->send(new Invoice($order));
+
+        return back()->with('success', trans('order::messages.invoice_sent'));
+    }
+}

Modules/Order/Http/Controllers/Admin/OrderPrintController.php

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+<?php
+
+namespace Modules\Order\Http\Controllers\Admin;
+
+use Modules\Order\Entities\Order;
+
+class OrderPrintController
+{
+    /**
+     * Show the specified resource.
+     *
+     * @param \Modules\Order\Entities\Order $order
+     * @return \Illuminate\Http\Response
+     */
+    public function show(Order $order)
+    {
+        $order->load('products', 'coupon', 'taxes');
+
+        return view('order::admin.orders.print.show', compact('order'));
+    }
+}

Modules/Order/Http/Controllers/Admin/OrderStatusController.php

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+<?php
+
+namespace Modules\Order\Http\Controllers\Admin;
+
+use Modules\Order\Entities\Order;
+use Modules\Order\Entities\OrderProduct;
+use Modules\Order\Events\OrderStatusChanged;
+
+class OrderStatusController
+{
+    /**
+     * Update the specified resource in storage.
+     *
+     * @param \Modules\Order\Entities\Order $request
+     * @return \Illuminate\Http\Response
+     */
+    public function update(Order $order)
+    {
+        $this->adjustStock($order);
+
+        $order->update(['status' => request('status')]);
+
+        $message = trans('order::messages.status_updated');
+
+        event(new OrderStatusChanged($order));
+
+        return $message;
+    }
+
+    private function adjustStock(Order $order)
+    {
+        if ($this->canceledOrRefunded(request('status'))) {
+            $this->restoreStock($order);
+        }
+
+        if ($this->canceledOrRefunded($order->status)) {
+            $this->reduceStock($order);
+        }
+    }
+
+    private function canceledOrRefunded($status)
+    {
+        return in_array($status, [Order::CANCELED, Order::REFUNDED]);
+    }
+
+    private function restoreStock(Order $order)
+    {
+        $order->products->each(function (OrderProduct $orderProduct) {
+            if ($orderProduct->product->manage_stock) {
+                $orderProduct->product->increment('qty', $orderProduct->qty);
+            }
+
+            if ($orderProduct->product->qty > 0) {
+                $orderProduct->product->markAsInStock();
+            }
+        });
+    }
+
+    private function reduceStock(Order $order)
+    {
+        $order->products->each(function (OrderProduct $orderProduct) {
+            if (
+                $orderProduct->product->manage_stock
+                && $orderProduct->product->qty !== 0
+            ) {
+                $orderProduct->product->decrement('qty', $orderProduct->qty);
+            }
+
+            if ($orderProduct->product->qty === 0) {
+                $orderProduct->product->markAsOutOfStock();
+            }
+        });
+    }
+}

Modules/Order/Http/Controllers/OrderController.php

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+<?php
+
+namespace Modules\Order\Http\Controllers;
+
+class OrderController
+{
+    /**
+     * Display a listing of the resource.
+     *
+     * @return \Illuminate\Http\Response
+     */
+    public function index()
+    {
+        return view('order::index');
+    }
+
+    /**
+     * Show the specified resource.
+     *
+     * @return \Illuminate\Http\Response
+     */
+    public function show()
+    {
+        return view('order::show');
+    }
+}

Modules/Order/Http/Requests/StoreOrderRequest.php

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+<?php
+
+namespace Modules\Order\Http\Requests;
+
+use Modules\Support\Country;
+use Illuminate\Validation\Rule;
+use Modules\Payment\Facades\Gateway;
+use Modules\Core\Http\Requests\Request;
+
+class StoreOrderRequest extends Request
+{
+    /**
+     * Available attributes.
+     *
+     * @var string
+     */
+    protected $availableAttributes = 'checkout::attributes';
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        return [
+            'customer_email' => ['required', 'email', $this->emailUniqueRule()],
+            'customer_phone' => ['required'],
+            'billing.first_name' => 'required',
+            'billing.last_name' => 'required',
+            'billing.address_1' => 'required',
+            'billing.city' => 'required',
+            'billing.zip' => 'required',
+            'billing.country' => ['required', Rule::in(Country::supportedCodes())],
+            'billing.state' => 'required',
+            'create_an_account' => 'boolean',
+            'password' => 'required_if:create_an_account,1',
+           'ship_to_a_different_address' => 'boolean',
+            'shipping.first_name' => 'required_if:ship_to_a_different_address,1',
+            'shipping.last_name' => 'required_if:ship_to_a_different_address,1',
+            'shipping.address_1' => 'required_if:ship_to_a_different_address,1',
+            'shipping.city' => 'required_if:ship_to_a_different_address,1',
+            'shipping.zip' => 'required_if:ship_to_a_different_address,1',
+            'shipping.country' => ['required_if:ship_to_a_different_address,1', Rule::in(Country::supportedCodes())],
+            'shipping.state' => 'required_if:ship_to_a_different_address,1',
+            'payment_method' => ['required', Rule::in(Gateway::names())],
+            'terms_and_conditions' => 'accepted',
+        ];
+    }
+
+    private function emailUniqueRule()
+    {
+        return $this->create_an_account ? Rule::unique('users', 'email') : null;
+    }
+}