invoiceninja/app/Utils/Traits/MakesInvoiceHtml.php

<?php
/**
 * Invoice Ninja (https://invoiceninja.com)
 *
 * @link https://github.com/invoiceninja/invoiceninja source repository
 *
 * @copyright Copyright (c) 2020. Invoice Ninja LLC (https://invoiceninja.com)
 *
 * @license https://opensource.org/licenses/AAL
 */

namespace App\Utils\Traits;

use App\Designs\Designer;
use Illuminate\Support\Facades\App;
use Illuminate\Support\Facades\Blade;
use Illuminate\Support\Facades\File;
use Symfony\Component\Debug\Exception\FatalThrowableError;

/**
 * Class MakesInvoiceHtml.
 */
trait MakesInvoiceHtml
{

    /**
     * Generate the HTML invoice parsing variables
     * and generating the final invoice HTML
     *
     * @param  string $design either the path to the design template, OR the full design template string
     * @param  Collection $invoice  The invoice object
     *
     * @deprecated replaced by generateEntityHtml
     *
     * @return string           The invoice string in HTML format
     */
    public function generateEntityHtml(Designer $designer, $entity, $contact = null) :string
    {
        $entity->load('client');
        
        $client = $entity->client;

        App::setLocale($client->preferredLocale());

        $labels = $entity->makeLabels();
        $values = $entity->makeValues($contact);

        $data = [];
        $data['entity'] = $entity;
        $data['lang'] = $client->preferredLocale();
        $data['includes'] = $designer->init()->getIncludes()->getHtml();
        $data['header'] = $designer->init()->getHeader()->getHtml();
        $data['body'] = $designer->init()->getBody()->getHtml();
        $data['footer'] = $designer->init()->getFooter()->getHtml();

        $html = view('pdf.stub', $data)->render();
        
        $html = $this->parseLabelsAndValues($labels, $values, $html);
        
        return $html;
    }

    private function parseLabelsAndValues($labels, $values, $section) :string
    {
        $section = str_replace(array_keys($labels), array_values($labels), $section);
        $section = str_replace(array_keys($values), array_values($values), $section);
        return $section;
    }

    /**
     * Parses the blade file string and processes the template variables
     *
     * @param  string $string The Blade file string
     * @param  array $data   The array of template variables
     * @return string         The return HTML string
     *
     */
    public function renderView($string, $data = []) :string
    {
        $data['__env'] = app(\Illuminate\View\Factory::class);

        $php = Blade::compileString($string);

        $obLevel = ob_get_level();
        ob_start();
        extract($data, EXTR_SKIP);

        try {
            eval('?' . '>' . $php);
        } catch (\Exception $e) {
            while (ob_get_level() > $obLevel) {
                ob_end_clean();
            }

            throw $e;
        } catch (\Throwable $e) {
            while (ob_get_level() > $obLevel) {
                ob_end_clean();
            }

            throw new FatalThrowableError($e);
        }

        return ob_get_clean();
    }

    /*
     * Returns the base template we will be using.
     */
    public function getTemplate(string $template = 'plain')
    {
        return File::get(resource_path('views/email/template/' . $template . '.blade.php'));
    }

    public function getTemplatePath(string $template = 'plain')
    {
        return 'email.template.' . $template;
    }
}