<?php

use chillerlan\QRCode\Common\EccLevel;
use chillerlan\QRCode\Data\QRMatrix;
use chillerlan\QRCode\Output\QRMarkupSVG;
use chillerlan\QRCode\{QRCode, QROptions};

require_once __DIR__.'/../vendor/autoload.php';

class RandomDotsSVGOutput extends QRMarkupSVG{

	/**
	 * @inheritDoc
	 */
	protected function collectModules(Closure $transform):array{
		$paths = [];

		// collect the modules for each type
		foreach($this->matrix->matrix() as $y => $row){
			foreach($row as $x => $M_TYPE){
				$M_TYPE_LAYER = $M_TYPE;

				if($this->options->connectPaths 
				   && $this->matrix->checkTypeNotIn($x, $y, $this->options->excludeFromConnect)
				){
					// to connect paths we'll redeclare the $M_TYPE_LAYER to data only
					$M_TYPE_LAYER = QRMatrix::M_DATA;

					if($this->matrix->check($x, $y)){
						$M_TYPE_LAYER |= QRMatrix::IS_DARK;
					}
				}

				// randomly assign another $M_TYPE_LAYER for the given types
				// note that the layer id has to be an integer value,
				// ideally outside of the several bitmask values
				if($M_TYPE_LAYER === (QRMatrix::M_DATA | QRMatrix::IS_DARK)){
					$M_TYPE_LAYER = [1234, 5678][rand(0, 1)];
				}

				// collect the modules per $M_TYPE
				$paths[$M_TYPE_LAYER][] = $transform($x, $y, $M_TYPE, $M_TYPE_LAYER);
			}
		}

		// beautify output
		ksort($paths);

		return $paths;
	}

}


$options = new QROptions([
	'version'             => 5,
	'eccLevel'            => EccLevel::H,
	'addQuietzone'        => true,
	'imageBase64'         => false,
	'outputType'          => QRCode::OUTPUT_CUSTOM,
	'outputInterface'     => RandomDotsSVGOutput::class,
	'markupDark'          => '',
	'markupLight'         => '',
	'imageTransparent'    => false,

	'connectPaths'        => true,
	'excludeFromConnect'  => [
		QRMatrix::M_FINDER|QRMatrix::IS_DARK,
		QRMatrix::M_FINDER_DOT|QRMatrix::IS_DARK,
		QRMatrix::M_ALIGNMENT|QRMatrix::IS_DARK,
	],

	'drawCircularModules' => true,
	'circleRadius'        => 0.4,
	'keepAsSquare'        => [
		QRMatrix::M_FINDER|QRMatrix::IS_DARK,
		QRMatrix::M_FINDER_DOT|QRMatrix::IS_DARK,
		QRMatrix::M_ALIGNMENT|QRMatrix::IS_DARK,
	],

	// assign the newly created layers here
	'svgDefs'             => '
	<style><![CDATA[
		.light{ fill: #ddd; }
		.dark{ fill: #424242; }
		.qr-1234 { fill: #463ed7; }
		.qr-5678 { fill: #4a4699; }
	]]></style>',

]);


header('content-type: image/svg+xml');
echo (new QRCode($options))->render('https://www.youtube.com/watch?v=dQw4w9WgXcQ');