<?php

namespace LWVendor\PhpOffice\PhpSpreadsheet\Writer\Xlsx;

use LWVendor\PhpOffice\PhpSpreadsheet\Reader\Xlsx\Namespaces;
use LWVendor\PhpOffice\PhpSpreadsheet\Shared\XMLWriter;
use LWVendor\PhpOffice\PhpSpreadsheet\Spreadsheet;
use LWVendor\PhpOffice\PhpSpreadsheet\Worksheet\BaseDrawing;
use LWVendor\PhpOffice\PhpSpreadsheet\Worksheet\MemoryDrawing;
use LWVendor\PhpOffice\PhpSpreadsheet\Writer\Exception as WriterException;
class Rels extends WriterPart
{
    /**
     * Write relationships to XML format.
     *
     * @return string XML Output
     */
    public function writeRelationships(Spreadsheet $spreadsheet)
    {
        // Create XML writer
        $objWriter = null;
        if ($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', 'yes');
        // Relationships
        $objWriter->startElement('Relationships');
        $objWriter->writeAttribute('xmlns', Namespaces::RELATIONSHIPS);
        $customPropertyList = $spreadsheet->getProperties()->getCustomProperties();
        if (!empty($customPropertyList)) {
            // Relationship docProps/app.xml
            $this->writeRelationship($objWriter, 4, Namespaces::RELATIONSHIPS_CUSTOM_PROPERTIES, 'docProps/custom.xml');
        }
        // Relationship docProps/app.xml
        $this->writeRelationship($objWriter, 3, Namespaces::RELATIONSHIPS_EXTENDED_PROPERTIES, 'docProps/app.xml');
        // Relationship docProps/core.xml
        $this->writeRelationship($objWriter, 2, Namespaces::CORE_PROPERTIES, 'docProps/core.xml');
        // Relationship xl/workbook.xml
        $this->writeRelationship($objWriter, 1, Namespaces::OFFICE_DOCUMENT, 'xl/workbook.xml');
        // a custom UI in workbook ?
        $target = $spreadsheet->getRibbonXMLData('target');
        if ($spreadsheet->hasRibbon()) {
            $this->writeRelationShip($objWriter, 5, Namespaces::EXTENSIBILITY, \is_string($target) ? $target : '');
        }
        $objWriter->endElement();
        return $objWriter->getData();
    }
    /**
     * Write workbook relationships to XML format.
     *
     * @return string XML Output
     */
    public function writeWorkbookRelationships(Spreadsheet $spreadsheet)
    {
        // Create XML writer
        $objWriter = null;
        if ($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', 'yes');
        // Relationships
        $objWriter->startElement('Relationships');
        $objWriter->writeAttribute('xmlns', Namespaces::RELATIONSHIPS);
        // Relationship styles.xml
        $this->writeRelationship($objWriter, 1, Namespaces::STYLES, 'styles.xml');
        // Relationship theme/theme1.xml
        $this->writeRelationship($objWriter, 2, Namespaces::THEME2, 'theme/theme1.xml');
        // Relationship sharedStrings.xml
        $this->writeRelationship($objWriter, 3, Namespaces::SHARED_STRINGS, 'sharedStrings.xml');
        // Relationships with sheets
        $sheetCount = $spreadsheet->getSheetCount();
        for ($i = 0; $i < $sheetCount; ++$i) {
            $this->writeRelationship($objWriter, $i + 1 + 3, Namespaces::WORKSHEET, 'worksheets/sheet' . ($i + 1) . '.xml');
        }
        // Relationships for vbaProject if needed
        // id : just after the last sheet
        if ($spreadsheet->hasMacros()) {
            $this->writeRelationShip($objWriter, $i + 1 + 3, Namespaces::VBA, 'vbaProject.bin');
            ++$i;
            //increment i if needed for an another relation
        }
        $objWriter->endElement();
        return $objWriter->getData();
    }
    /**
     * Write worksheet relationships to XML format.
     *
     * Numbering is as follows:
     *     rId1                 - Drawings
     *  rId_hyperlink_x     - Hyperlinks
     *
     * @param int $worksheetId
     * @param bool $includeCharts Flag indicating if we should write charts
     * @param int $tableRef Table ID
     *
     * @return string XML Output
     */
    public function writeWorksheetRelationships(\LWVendor\PhpOffice\PhpSpreadsheet\Worksheet\Worksheet $worksheet, $worksheetId = 1, $includeCharts = \false, $tableRef = 1)
    {
        // Create XML writer
        $objWriter = null;
        if ($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', 'yes');
        // Relationships
        $objWriter->startElement('Relationships');
        $objWriter->writeAttribute('xmlns', Namespaces::RELATIONSHIPS);
        // Write drawing relationships?
        $drawingOriginalIds = [];
        $unparsedLoadedData = $worksheet->getParentOrThrow()->getUnparsedLoadedData();
        if (isset($unparsedLoadedData['sheets'][$worksheet->getCodeName()]['drawingOriginalIds'])) {
            $drawingOriginalIds = $unparsedLoadedData['sheets'][$worksheet->getCodeName()]['drawingOriginalIds'];
        }
        if ($includeCharts) {
            $charts = $worksheet->getChartCollection();
        } else {
            $charts = [];
        }
        if ($worksheet->getDrawingCollection()->count() > 0 || \count($charts) > 0 || $drawingOriginalIds) {
            $rId = 1;
            // Use original $relPath to get original $rId.
            // Take first. In future can be overwritten.
            // (! synchronize with \PhpOffice\PhpSpreadsheet\Writer\Xlsx\Worksheet::writeDrawings)
            \reset($drawingOriginalIds);
            $relPath = \key($drawingOriginalIds);
            if (isset($drawingOriginalIds[$relPath])) {
                $rId = (int) \substr($drawingOriginalIds[$relPath], 3);
            }
            // Generate new $relPath to write drawing relationship
            $relPath = '../drawings/drawing' . $worksheetId . '.xml';
            $this->writeRelationship($objWriter, $rId, Namespaces::RELATIONSHIPS_DRAWING, $relPath);
        }
        // Write hyperlink relationships?
        $i = 1;
        foreach ($worksheet->getHyperlinkCollection() as $hyperlink) {
            if (!$hyperlink->isInternal()) {
                $this->writeRelationship($objWriter, '_hyperlink_' . $i, Namespaces::HYPERLINK, $hyperlink->getUrl(), 'External');
                ++$i;
            }
        }
        // Write comments relationship?
        $i = 1;
        if (\count($worksheet->getComments()) > 0 || isset($unparsedLoadedData['sheets'][$worksheet->getCodeName()]['legacyDrawing'])) {
            $this->writeRelationship($objWriter, '_comments_vml' . $i, Namespaces::VML, '../drawings/vmlDrawing' . $worksheetId . '.vml');
        }
        if (\count($worksheet->getComments()) > 0) {
            $this->writeRelationship($objWriter, '_comments' . $i, Namespaces::COMMENTS, '../comments' . $worksheetId . '.xml');
        }
        // Write Table
        $tableCount = $worksheet->getTableCollection()->count();
        for ($i = 1; $i <= $tableCount; ++$i) {
            $this->writeRelationship($objWriter, '_table_' . $i, Namespaces::RELATIONSHIPS_TABLE, '../tables/table' . $tableRef++ . '.xml');
        }
        // Write header/footer relationship?
        $i = 1;
        if (\count($worksheet->getHeaderFooter()->getImages()) > 0) {
            $this->writeRelationship($objWriter, '_headerfooter_vml' . $i, Namespaces::VML, '../drawings/vmlDrawingHF' . $worksheetId . '.vml');
        }
        $this->writeUnparsedRelationship($worksheet, $objWriter, 'ctrlProps', Namespaces::RELATIONSHIPS_CTRLPROP);
        $this->writeUnparsedRelationship($worksheet, $objWriter, 'vmlDrawings', Namespaces::VML);
        $this->writeUnparsedRelationship($worksheet, $objWriter, 'printerSettings', Namespaces::RELATIONSHIPS_PRINTER_SETTINGS);
        $objWriter->endElement();
        return $objWriter->getData();
    }
    private function writeUnparsedRelationship(\LWVendor\PhpOffice\PhpSpreadsheet\Worksheet\Worksheet $worksheet, XMLWriter $objWriter, string $relationship, string $type) : void
    {
        $unparsedLoadedData = $worksheet->getParentOrThrow()->getUnparsedLoadedData();
        if (!isset($unparsedLoadedData['sheets'][$worksheet->getCodeName()][$relationship])) {
            return;
        }
        foreach ($unparsedLoadedData['sheets'][$worksheet->getCodeName()][$relationship] as $rId => $value) {
            if (\substr($rId, 0, 17) !== '_headerfooter_vml') {
                $this->writeRelationship($objWriter, $rId, $type, $value['relFilePath']);
            }
        }
    }
    /**
     * Write drawing relationships to XML format.
     *
     * @param int $chartRef Chart ID
     * @param bool $includeCharts Flag indicating if we should write charts
     *
     * @return string XML Output
     */
    public function writeDrawingRelationships(\LWVendor\PhpOffice\PhpSpreadsheet\Worksheet\Worksheet $worksheet, &$chartRef, $includeCharts = \false)
    {
        // Create XML writer
        $objWriter = null;
        if ($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', 'yes');
        // Relationships
        $objWriter->startElement('Relationships');
        $objWriter->writeAttribute('xmlns', Namespaces::RELATIONSHIPS);
        // Loop through images and write relationships
        $i = 1;
        $iterator = $worksheet->getDrawingCollection()->getIterator();
        while ($iterator->valid()) {
            $drawing = $iterator->current();
            if ($drawing instanceof \LWVendor\PhpOffice\PhpSpreadsheet\Worksheet\Drawing || $drawing instanceof MemoryDrawing) {
                // Write relationship for image drawing
                $this->writeRelationship($objWriter, $i, Namespaces::IMAGE, '../media/' . $drawing->getIndexedFilename());
                $i = $this->writeDrawingHyperLink($objWriter, $drawing, $i);
            }
            $iterator->next();
            ++$i;
        }
        if ($includeCharts) {
            // Loop through charts and write relationships
            $chartCount = $worksheet->getChartCount();
            if ($chartCount > 0) {
                for ($c = 0; $c < $chartCount; ++$c) {
                    $this->writeRelationship($objWriter, $i++, Namespaces::RELATIONSHIPS_CHART, '../charts/chart' . ++$chartRef . '.xml');
                }
            }
        }
        $objWriter->endElement();
        return $objWriter->getData();
    }
    /**
     * Write header/footer drawing relationships to XML format.
     *
     * @return string XML Output
     */
    public function writeHeaderFooterDrawingRelationships(\LWVendor\PhpOffice\PhpSpreadsheet\Worksheet\Worksheet $worksheet)
    {
        // Create XML writer
        $objWriter = null;
        if ($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', 'yes');
        // Relationships
        $objWriter->startElement('Relationships');
        $objWriter->writeAttribute('xmlns', Namespaces::RELATIONSHIPS);
        // Loop through images and write relationships
        foreach ($worksheet->getHeaderFooter()->getImages() as $key => $value) {
            // Write relationship for image drawing
            $this->writeRelationship($objWriter, $key, Namespaces::IMAGE, '../media/' . $value->getIndexedFilename());
        }
        $objWriter->endElement();
        return $objWriter->getData();
    }
    public function writeVMLDrawingRelationships(\LWVendor\PhpOffice\PhpSpreadsheet\Worksheet\Worksheet $worksheet) : string
    {
        // Create XML writer
        $objWriter = null;
        if ($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', 'yes');
        // Relationships
        $objWriter->startElement('Relationships');
        $objWriter->writeAttribute('xmlns', Namespaces::RELATIONSHIPS);
        // Loop through images and write relationships
        foreach ($worksheet->getComments() as $comment) {
            if (!$comment->hasBackgroundImage()) {
                continue;
            }
            $bgImage = $comment->getBackgroundImage();
            $this->writeRelationship($objWriter, $bgImage->getImageIndex(), Namespaces::IMAGE, '../media/' . $bgImage->getMediaFilename());
        }
        $objWriter->endElement();
        return $objWriter->getData();
    }
    /**
     * Write Override content type.
     *
     * @param int|string $id Relationship ID. rId will be prepended!
     * @param string $type Relationship type
     * @param string $target Relationship target
     * @param string $targetMode Relationship target mode
     */
    private function writeRelationship(XMLWriter $objWriter, $id, $type, $target, $targetMode = '') : void
    {
        if ($type != '' && $target != '') {
            // Write relationship
            $objWriter->startElement('Relationship');
            $objWriter->writeAttribute('Id', 'rId' . $id);
            $objWriter->writeAttribute('Type', $type);
            $objWriter->writeAttribute('Target', $target);
            if ($targetMode != '') {
                $objWriter->writeAttribute('TargetMode', $targetMode);
            }
            $objWriter->endElement();
        } else {
            throw new WriterException('Invalid parameters passed.');
        }
    }
    private function writeDrawingHyperLink(XMLWriter $objWriter, BaseDrawing $drawing, int $i) : int
    {
        if ($drawing->getHyperlink() === null) {
            return $i;
        }
        ++$i;
        $this->writeRelationship($objWriter, $i, Namespaces::HYPERLINK, $drawing->getHyperlink()->getUrl(), $drawing->getHyperlink()->getTypeHyperlink());
        return $i;
    }
}