<?php



namespace PhpOffice\PhpSpreadsheet\Writer\Ods;



use PhpOffice\PhpSpreadsheet\Shared\XMLWriter;

use PhpOffice\PhpSpreadsheet\Spreadsheet;



class Meta extends WriterPart

{

    /**

     * Write meta.xml to XML format.

     *

     * @param Spreadsheet $spreadsheet

     *

     * @throws \PhpOffice\PhpSpreadsheet\Writer\Exception

     *

     * @return string XML Output

     */

    public function write(Spreadsheet $spreadsheet = null)

    {

        if (!$spreadsheet) {

            $spreadsheet = $this->getParentWriter()->getSpreadsheet();

        }



        $objWriter = null;

        if ($this->getParentWriter()->getUseDiskCaching()) {

            $objWriter = new XMLWriter(XMLWriter::STORAGE_DISK, $this->getParentWriter()->getDiskCachingDirectory());

        } else {

            $objWriter = new XMLWriter(XMLWriter::STORAGE_MEMORY);

        }



        // XML header

        $objWriter->startDocument('1.0', 'UTF-8');



        // Meta

        $objWriter->startElement('office:document-meta');



        $objWriter->writeAttribute('xmlns:office', 'urn:oasis:names:tc:opendocument:xmlns:office:1.0');

        $objWriter->writeAttribute('xmlns:xlink', 'http://www.w3.org/1999/xlink');

        $objWriter->writeAttribute('xmlns:dc', 'http://purl.org/dc/elements/1.1/');

        $objWriter->writeAttribute('xmlns:meta', 'urn:oasis:names:tc:opendocument:xmlns:meta:1.0');

        $objWriter->writeAttribute('xmlns:ooo', 'http://openoffice.org/2004/office');

        $objWriter->writeAttribute('xmlns:grddl', 'http://www.w3.org/2003/g/data-view#');

        $objWriter->writeAttribute('office:version', '1.2');



        $objWriter->startElement('office:meta');



        $objWriter->writeElement('meta:initial-creator', $spreadsheet->getProperties()->getCreator());

        $objWriter->writeElement('dc:creator', $spreadsheet->getProperties()->getCreator());

        $objWriter->writeElement('meta:creation-date', date(DATE_W3C, $spreadsheet->getProperties()->getCreated()));

        $objWriter->writeElement('dc:date', date(DATE_W3C, $spreadsheet->getProperties()->getCreated()));

        $objWriter->writeElement('dc:title', $spreadsheet->getProperties()->getTitle());

        $objWriter->writeElement('dc:description', $spreadsheet->getProperties()->getDescription());

        $objWriter->writeElement('dc:subject', $spreadsheet->getProperties()->getSubject());

        $keywords = explode(' ', $spreadsheet->getProperties()->getKeywords());

        foreach ($keywords as $keyword) {

            $objWriter->writeElement('meta:keyword', $keyword);

        }



        //<meta:document-statistic meta:table-count="XXX" meta:cell-count="XXX" meta:object-count="XXX"/>

        $objWriter->startElement('meta:user-defined');

        $objWriter->writeAttribute('meta:name', 'Company');

        $objWriter->writeRaw($spreadsheet->getProperties()->getCompany());

        $objWriter->endElement();



        $objWriter->startElement('meta:user-defined');

        $objWriter->writeAttribute('meta:name', 'category');

        $objWriter->writeRaw($spreadsheet->getProperties()->getCategory());

        $objWriter->endElement();



        $objWriter->endElement();



        $objWriter->endElement();



        return $objWriter->getData();

    }

}

