<?php

namespace Webkul\Admin\Http\Controllers\Sales;

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

class InvoiceController extends Controller
{
    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    protected $_config;

    /**
     * Order repository instance.
     *
     * @var \Webkul\Sales\Repositories\OrderRepository
     */
    protected $orderRepository;

    /**
     * Invoice repository instance.
     *
     * @var \Webkul\Sales\Repositories\InvoiceRepository
     */
    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);

        if ($order->payment->method === 'paypal_standard') {
            abort(404);
        }

        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);

        $html = view('admin::sales.invoices.pdf', compact('invoice'))->render();

        return PDF::loadHTML($this->adjustArabicAndPersianContent($html))
            ->setPaper('a4')
            ->download('invoice-' . $invoice->created_at->format('d-m-Y') . '.pdf');
    }

    /**
     * Adjust arabic and persian content.
     *
     * @param  string  $html
     * @return string
     */
    private function adjustArabicAndPersianContent($html)
    {
        $arabic = new \ArPHP\I18N\Arabic();

        $p = $arabic->arIdentify($html);

        for ($i = count($p) - 1; $i >= 0; $i -= 2) {
            $utf8ar = $arabic->utf8Glyphs(substr($html, $p[$i - 1], $p[$i] - $p[$i - 1]));
            $html   = substr_replace($html, $utf8ar, $p[$i - 1], $p[$i] - $p[$i - 1]);
        }

        return $html;
    }
}