<?php

/**
 * Class QRMarkupSVG
 *
 * @created      06.06.2022
 * @author       smiley <smiley@chillerlan.net>
 * @copyright    2022 smiley
 * @license      MIT
 */
namespace WCPOS\Vendor\chillerlan\QRCode\Output;

use function array_chunk, implode, is_string, preg_match, sprintf, trim;
/**
 * SVG output
 *
 * @see https://github.com/codemasher/php-qrcode/pull/5
 * @see https://developer.mozilla.org/en-US/docs/Web/SVG
 * @see https://www.sarasoueidan.com/demos/interactive-svg-coordinate-system/
 * @see https://lea.verou.me/blog/2019/05/utility-convert-svg-path-to-all-relative-or-all-absolute-commands/
 * @see https://codepen.io/leaverou/full/RmwzKv
 * @see https://jakearchibald.github.io/svgomg/
 * @see https://web.archive.org/web/20200220211445/http://apex.infogridpacific.com/SVG/svg-tutorial-contents.html
 */
class QRMarkupSVG extends QRMarkup
{
    public const MIME_TYPE = 'image/svg+xml';
    /**
     * @todo: XSS proof
     *
     * @see https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/fill
     * @inheritDoc
     */
    public static function moduleValueIsValid($value) : bool
    {
        if (!is_string($value)) {
            return \false;
        }
        $value = trim($value);
        // url(...)
        if (preg_match('~^url\\([-/#a-z\\d]+\\)$~i', $value)) {
            return \true;
        }
        // otherwise check for standard css notation
        return parent::moduleValueIsValid($value);
    }
    /**
     * @inheritDoc
     */
    protected function getOutputDimensions() : array
    {
        return [$this->moduleCount, $this->moduleCount];
    }
    /**
     * @inheritDoc
     */
    protected function getCssClass(int $M_TYPE = 0) : string
    {
        return implode(' ', ['qr-' . ($this::LAYERNAMES[$M_TYPE] ?? $M_TYPE), $this->matrix->isDark($M_TYPE) ? 'dark' : 'light', $this->options->cssClass]);
    }
    /**
     * @inheritDoc
     */
    protected function createMarkup(bool $saveToFile) : string
    {
        $svg = $this->header();
        if ($this->options->svgDefs !== '') {
            $svg .= sprintf('<defs>%1$s%2$s</defs>%2$s', $this->options->svgDefs, $this->eol);
        }
        $svg .= $this->paths();
        // close svg
        $svg .= sprintf('%1$s</svg>%1$s', $this->eol);
        // transform to data URI only when not saving to file
        if (!$saveToFile && $this->options->outputBase64) {
            $svg = $this->toBase64DataURI($svg);
        }
        return $svg;
    }
    /**
     * returns the value for the SVG viewBox attribute
     *
     * @see https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/viewBox
     * @see https://css-tricks.com/scale-svg/#article-header-id-3
     */
    protected function getViewBox() : string
    {
        [$width, $height] = $this->getOutputDimensions();
        return sprintf('0 0 %s %s', $width, $height);
    }
    /**
     * returns the <svg> header with the given options parsed
     *
     * @see https://developer.mozilla.org/en-US/docs/Web/SVG/Element/svg
     */
    protected function header() : string
    {
        $header = sprintf('<svg xmlns="http://www.w3.org/2000/svg" class="qr-svg %1$s" viewBox="%2$s" preserveAspectRatio="%3$s">%4$s', $this->options->cssClass, $this->getViewBox(), $this->options->svgPreserveAspectRatio, $this->eol);
        if ($this->options->svgAddXmlHeader) {
            $header = sprintf('<?xml version="1.0" encoding="UTF-8"?>%s%s', $this->eol, $header);
        }
        return $header;
    }
    /**
     * returns one or more SVG <path> elements
     */
    protected function paths() : string
    {
        /** @phan-suppress-next-line PhanDeprecatedFunction */
        $paths = $this->collectModules(fn(int $x, int $y, int $M_TYPE): string => $this->module($x, $y, $M_TYPE));
        $svg = [];
        // create the path elements
        foreach ($paths as $M_TYPE => $modules) {
            // limit the total line length
            $chunks = array_chunk($modules, 100);
            $chonks = [];
            foreach ($chunks as $chunk) {
                $chonks[] = implode(' ', $chunk);
            }
            $path = implode($this->eol, $chonks);
            if ($path === '') {
                continue;
            }
            $svg[] = $this->path($path, $M_TYPE);
        }
        return implode($this->eol, $svg);
    }
    /**
     * renders and returns a single <path> element
     *
     * @see https://developer.mozilla.org/en-US/docs/Web/SVG/Element/path
     */
    protected function path(string $path, int $M_TYPE) : string
    {
        if ($this->options->svgUseFillAttributes) {
            return sprintf('<path class="%s" fill="%s" d="%s"/>', $this->getCssClass($M_TYPE), $this->getModuleValue($M_TYPE), $path);
        }
        return sprintf('<path class="%s" d="%s"/>', $this->getCssClass($M_TYPE), $path);
    }
    /**
     * returns a path segment for a single module
     *
     * @see https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/d
     */
    protected function module(int $x, int $y, int $M_TYPE) : string
    {
        if (!$this->drawLightModules && !$this->matrix->isDark($M_TYPE)) {
            return '';
        }
        if ($this->drawCircularModules && !$this->matrix->checkTypeIn($x, $y, $this->keepAsSquare)) {
            // string interpolation: ugly and fast
            $ix = $x + 0.5 - $this->circleRadius;
            $iy = $y + 0.5;
            // phpcs:ignore
            return "M{$ix} {$iy} a{$this->circleRadius} {$this->circleRadius} 0 1 0 {$this->circleDiameter} 0 a{$this->circleRadius} {$this->circleRadius} 0 1 0 -{$this->circleDiameter} 0Z";
        }
        // phpcs:ignore
        return "M{$x} {$y} h1 v1 h-1Z";
    }
}