YetiForceCompany/YetiForceCRM

<?php

/**
 * Primary file for generating PDF files.
 *
 * @package App
 *
 * @copyright YetiForce S.A.
 * @license   YetiForce Public License 6.5 (licenses/LicenseEN.txt or yetiforce.com)
 * @author    Mariusz Krzaczkowski <m.krzaczkowski@yetiforce.com>
 */

namespace App\Pdf;

/**
 * Primary class for generating PDF files.
 */
class Pdf
{
    /**
     * Get page formats.
     *
     * @return string[]
     */
    public static function getPageFormats(): array
    {
        return [
            '4A0',
            '2A0',
            'A0', 'A1', 'A2', 'A3', 'A4', 'A5', 'A6', 'A7', 'A8', 'A9', 'A10',
            'B0', 'B1', 'B2', 'B3', 'B4', 'B5', 'B6', 'B7', 'B8', 'B9', 'B10',
            'C0', 'C1', 'C2', 'C3', 'C4', 'C5', 'C6', 'C7', 'C8', 'C9', 'C10',
            'RA0', 'RA1', 'RA2', 'RA3', 'RA4',
            'SRA0', 'SRA1', 'SRA2', 'SRA3', 'SRA4',
            'LETTER',
            'LEGAL',
            'LEDGER',
            'TABLOID',
            'EXECUTIVE',
            'FOLIO',
            'B', //    'B' format paperback size 128x198mm
            'A', //    'A' format paperback size 111x178mm
            'DEMY', //    'Demy' format paperback size 135x216mm
            'ROYAL', //    'Royal' format paperback size 153x234mm
        ];
    }

    /**
     * Get supported drivers for generating PDF.
     *
     * @return string[]
     */
    public static function getSupportedDrivers(): array
    {
        $drivers = [];
        foreach ((new \DirectoryIterator(__DIR__ . \DIRECTORY_SEPARATOR . 'Drivers')) as $fileInfo) {
            $fileName = $fileInfo->getBasename('.php');
            if ('Base' !== $fileName && 'php' === $fileInfo->getExtension()) {
                $className = '\App\Pdf\Drivers\\' . $fileName;
                if (!class_exists($className)) {
                    \App\Log::warning('Not found custom class: ' . $className);
                    continue;
                }
                if ($className::isActive()) {
                    $drivers[$fileName] = $className::DRIVER_NAME;
                }
            }
        }
        return $drivers;
    }

    /**
     * Get driver label.
     *
     * @param string $name
     *
     * @return string
     */
    public static function getDriverLabel(string $name): string
    {
        $className = '\App\Pdf\Drivers\\' . $name;
        $label = $name;
        if (class_exists($className)) {
            $label = \App\Language::translate($className::DRIVER_NAME, 'Settings::PDF');
        }
        return $label;
    }

    /**
     * Get PDF instance by template id.
     *
     * @param int $templateId
     *
     * @return Drivers\Base
     */
    public static function getInstanceByTemplateId(int $templateId): Drivers\Base
    {
        $template = \Vtiger_PDF_Model::getInstanceById($templateId);
        $className = '\App\Pdf\Drivers\\' . $template->get('generator');
        $pdf = new $className();
        $pdf->setTemplate($template);
        return $pdf;
    }

    /**
     * Function that merges PDF files into one.
     *
     * @param string[] $files   List of files to merge
     * @param string   $path    File name or path to write
     * @param string   $pdfFlag Merge mode e.g. `I` = show in browser , `D` = download , `F` = save to file
     *
     * @return void
     */
    public static function merge(array $files, string $path, string $pdfFlag): void
    {
        $merger = new \setasign\Fpdi\Fpdi();
        foreach ($files as $file) {
            $pageCount = $merger->setSourceFile($file);
            for ($i = 1; $i <= $pageCount; ++$i) {
                $template = $merger->importPage($i);
                $size = $merger->getTemplateSize($template);
                $merger->AddPage(($size['width'] > $size['height']) ? 'L' : 'P', [$size['width'], $size['height']]);
                $merger->useTemplate($template);
            }
        }
        $merger->Output($path, $pdfFlag);
    }
}