sarga/packages/Webkul/Admin/src/Http/Controllers/Sales/InvoiceController.php

<?php

namespace Webkul\Admin\Http\Controllers\Sales;

use Webkul\Admin\Http\Controllers\Controller;
use Webkul\Sales\Repositories\OrderRepository;
use Webkul\Sales\Repositories\InvoiceRepository;
use PDF;

/**
 * Sales Invoice controller
 *
 * @author    Jitendra Singh <jitendra@webkul.com>
 * @copyright 2018 Webkul Software Pvt Ltd (http://www.webkul.com)
 */
class InvoiceController extends Controller
{
    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    protected $_config;

    /**
     * OrderRepository object
     *
     * @var array
     */
    protected $orderRepository;

    /**
     * InvoiceRepository object
     *
     * @var array
     */
    protected $invoiceRepository;

    /**
     * Create a new controller instance.
     *
     * @param  \Webkul\Sales\Repositories\OrderRepository   $orderRepository
     * @param  \Webkul\Sales\Repositories\InvoiceRepository $invoiceRepository
     * @return void
     */
    public function __construct(
        OrderRepository $orderRepository,
        InvoiceRepository $invoiceRepository
    )
    {
        $this->middleware('admin');

        $this->_config = request('_config');

        $this->orderRepository = $orderRepository;

        $this->invoiceRepository = $invoiceRepository;
    }

    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\View\View
     */
    public function index()
    {
        return view($this->_config['view']);
    }

    /**
     * Show the form for creating a new resource.
     *
     * @param int $orderId
     * @return \Illuminate\View\View
     */
    public function create($orderId)
    {
        $order = $this->orderRepository->findOrFail($orderId);

        return view($this->_config['view'], compact('order'));
    }

    /**
     * Store a newly created resource in storage.
     *
     * @param int $orderId
     * @return \Illuminate\Http\Response
     */
    public function store($orderId)
    {
        $order = $this->orderRepository->findOrFail($orderId);

        if (! $order->canInvoice()) {
            session()->flash('error', trans('admin::app.sales.invoices.creation-error'));

            return redirect()->back();
        }

        $this->validate(request(), [
            'invoice.items.*' => 'required|numeric|min:0',
        ]);

        $data = request()->all();

        $haveProductToInvoice = false;
        
        foreach ($data['invoice']['items'] as $itemId => $qty) {
            if ($qty) {
                $haveProductToInvoice = true;
                break;
            }
        }

        if (! $haveProductToInvoice) {
            session()->flash('error', trans('admin::app.sales.invoices.product-error'));

            return redirect()->back();
        }

        $this->invoiceRepository->create(array_merge($data, ['order_id' => $orderId]));

        session()->flash('success', trans('admin::app.response.create-success', ['name' => 'Invoice']));

        return redirect()->route($this->_config['redirect'], $orderId);
    }

    /**
     * Show the view for the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\View\View
     */
    public function view($id)
    {
        $invoice = $this->invoiceRepository->findOrFail($id);

        return view($this->_config['view'], compact('invoice'));
    }

    /**
     * Print and download the for the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function print($id)
    {
        $invoice = $this->invoiceRepository->findOrFail($id);

        $pdf = PDF::loadView('admin::sales.invoices.pdf', compact('invoice'))->setPaper('a4');

        return $pdf->download('invoice-' . $invoice->created_at->format('d-m-Y') . '.pdf');
    }
}