<?php

namespace App\Utils\Exports;

use setasign\Fpdi\Fpdi;
use setasign\Fpdi\PdfParser\StreamReader;

class PhpMerge
{
    public static function mergePdfDocuments($documentTitle, $pdfContents)
    {
        $pdf = new Fpdi();

        foreach ($pdfContents as $pdfContent) {

            $streamReader = StreamReader::createByString($pdfContent['data']);
            $pageCount = $pdf->setSourceFile($streamReader);

            for ($pageNo = 1; $pageNo <= $pageCount; $pageNo++) {
                $templateId = $pdf->importPage($pageNo);
                $pdf->AddPage($pdfContent['orientation'], 'A4');
                $pdf->useTemplate($templateId);
            }
        }

        return response($pdf->Output($documentTitle . '.pdf', 'S'))
            ->header('Content-Type', 'application/pdf')
            ->header('Content-Disposition', 'inline; filename="' . $documentTitle . '.pdf"')
            ->header('Cache-Control', 'no-cache, no-store, must-revalidate')
            ->header('Pragma', 'no-cache')
            ->header('Expires', '0');
    }
}