<?php

namespace BRSystems\Core\Library\cPdfFromHTML;

use Dompdf\Cpdf;
use Dompdf\Dompdf;
use Dompdf\Options;

/**
 * cPdf module
 *
 * @category LIB cPdf
 * @author Mareks Keišs <mareks.keiss@brsystems.lv>
 * @since Version 1.0
 */
class cPdfFromHTML
{
    private $dir;

    /**
     * Class constructor
     * @param int $MEMORY_LIMIT - memory limit in megabytes
     * @param bool|string $sRenderFolder
     */
    public function __construct($MEMORY_LIMIT = 64, $sRenderFolder = false)
    {
        // Set larger memory limit - 256 - aprox. 500rows
        if (!isset($GLOBALS['coverage_tests_running'])) {
            ini_set('memory_limit', "{$MEMORY_LIMIT}M");
            ini_set('max_execution_time', 60 * 10);
        }

        // Create this month dir
        if (!$sRenderFolder) $sRenderFolder = __DOCS__ . 'pdfs/' . date('Y-m') . '/';
        if (!file_exists($sRenderFolder)) mkdir($sRenderFolder, 0777, true);
        $this->dir = $sRenderFolder;
    }

    /**
     * Function to generate pdf file & save to docs folder
     *
     * @category LIB cPdf
     * @author Mareks Keišs <mareks.keiss@brsystems.lv>
     * @param string $sHTML - html data
     * @param bool $bStream - stream pdf file
     * @param string $sNewFileName - file new name
     * @param string $sPaperSize - paper size
     * @param string $sPaperOrientation - paper orientation
     * @returns string - doc file name created
     *
     * best fonts: font-family: "dejavu sans","dejavu sans light","dejavu sans condensed","dejavu serif","dejavu serif condensed","dejavu sans mono", monospace;
     */
    public function renderPdf($sHTML, $bStream = false, $sNewFileName = "custom_doc_name_%CDATE%", $sPaperSize = 'A4', $sPaperOrientation = 'portrait')
    {
        // Set new file name
        $sNewFileName = str_replace(array('%CDATE%'), array(date('d-m-Y')), $sNewFileName);

        // Replace illegal characters from title
        $sNewFileName = preg_replace('/[\/\\\:\*"<>\|]/', '_', $sNewFileName);

        // Check file with name exists to add _%NR% at the end

        // Always replace same file & order nr
        $file = "{$sNewFileName}.pdf";
        /* $i = 1;
        $file = "{$sNewFileName}_0.pdf";
        if(file_exists($this->dir . "{$sNewFileName}_0.pdf")){
            while(file_exists($this->dir . "{$sNewFileName}_{$i}.pdf")){
                $i++;
            }
            $file = "{$sNewFileName}_{$i}.pdf";
        }*/

        // Check proper paper size
        if (empty(CPDF::$PAPER_SIZES[strtolower($sPaperSize)]))
            $sPaperSize = 'a4';

        // Check page orientation
        if (!in_array($sPaperOrientation, array('portrait', 'landscape')))
            $sPaperOrientation = 'portrait';

        // Generate document
        if (strlen($sHTML)) {

            // Set options
            $oOptions = new Options();
            $oOptions->set('isPhpEnabled', true);
            $oOptions->set('defaultFont', 'Muli');
            $oOptions->set('setIsRemoteEnabled', true);
            $oOptions->setChroot([__MDIR__]);

            $oDomPdf = new Dompdf($oOptions);

            //$sHTML = mb_convert_encoding($sHTML, 'HTML-ENTITIES', 'UTF-8');

            $oDomPdf->loadHtml($sHTML);
            $oDomPdf->setPaper($sPaperSize, $sPaperOrientation);

            $oDomPdf->render();

            if ($bStream && !headers_sent()) {
                $oDomPdf->stream($this->dir . $file, array());
            } else {
                $output = $oDomPdf->output();
                file_put_contents($this->dir . $file, $output);

                return $this->dir . $file;
            }
        }

        return false;
    }
}