<?php

/**
 * Class QRImagick
 *
 * @created      04.07.2018
 * @author       smiley <smiley@chillerlan.net>
 * @copyright    2018 smiley
 * @license      MIT
 *
 * @noinspection PhpComposerExtensionStubsInspection
 */
namespace WCPOS\Vendor\chillerlan\QRCode\Output;

use WCPOS\Vendor\chillerlan\QRCode\Data\QRMatrix;
use WCPOS\Vendor\chillerlan\Settings\SettingsContainerInterface;
use finfo, Imagick, ImagickDraw, ImagickPixel;
use function extension_loaded, in_array, is_string, max, min, preg_match, strlen;
use const FILEINFO_MIME_TYPE;
/**
 * ImageMagick output module (requires ext-imagick)
 *
 * @see https://php.net/manual/book.imagick.php
 * @see https://phpimagick.com
 */
class QRImagick extends QROutputAbstract
{
    /**
     * The main image instance
     */
    protected Imagick $imagick;
    /**
     * The main draw instance
     */
    protected ImagickDraw $imagickDraw;
    /**
     * The allocated background color
     */
    protected ImagickPixel $backgroundColor;
    /**
     * @inheritDoc
     *
     * @throws \chillerlan\QRCode\Output\QRCodeOutputException
     */
    public function __construct(SettingsContainerInterface $options, QRMatrix $matrix)
    {
        foreach (['fileinfo', 'imagick'] as $ext) {
            if (!extension_loaded($ext)) {
                throw new QRCodeOutputException(\sprintf('ext-%s not loaded', $ext));
                // @codeCoverageIgnore
            }
        }
        parent::__construct($options, $matrix);
    }
    /**
     * note: we're not necessarily validating the several values, just checking the general syntax
     *
     * @see https://www.php.net/manual/imagickpixel.construct.php
     * @inheritDoc
     */
    public static function moduleValueIsValid($value) : bool
    {
        if (!is_string($value)) {
            return \false;
        }
        $value = \trim($value);
        // hex notation
        // #rgb(a)
        // #rrggbb(aa)
        // #rrrrggggbbbb(aaaa)
        // ...
        if (preg_match('/^#[a-f\\d]+$/i', $value) && in_array(strlen($value) - 1, [3, 4, 6, 8, 9, 12, 16, 24, 32], \true)) {
            return \true;
        }
        // css (-like) func(...values)
        if (preg_match('#^(graya?|hs(b|la?)|rgba?)\\([\\d .,%]+\\)$#i', $value)) {
            return \true;
        }
        // predefined css color
        if (preg_match('/^[a-z]+$/i', $value)) {
            return \true;
        }
        return \false;
    }
    /**
     * @inheritDoc
     */
    protected function prepareModuleValue($value) : ImagickPixel
    {
        return new ImagickPixel($value);
    }
    /**
     * @inheritDoc
     */
    protected function getDefaultModuleValue(bool $isDark) : ImagickPixel
    {
        return $this->prepareModuleValue($isDark ? '#000' : '#fff');
    }
    /**
     * @inheritDoc
     *
     * @return string|\Imagick
     */
    public function dump(?string $file = null)
    {
        $this->setBgColor();
        $this->imagick = $this->createImage();
        $this->drawImage();
        // set transparency color after all operations
        $this->setTransparencyColor();
        if ($this->options->returnResource) {
            return $this->imagick;
        }
        $imageData = $this->imagick->getImageBlob();
        $this->imagick->destroy();
        $this->saveToFile($imageData, $file);
        if ($this->options->outputBase64) {
            $imageData = $this->toBase64DataURI($imageData, (new finfo(FILEINFO_MIME_TYPE))->buffer($imageData));
        }
        return $imageData;
    }
    /**
     * Sets the background color
     */
    protected function setBgColor() : void
    {
        if ($this::moduleValueIsValid($this->options->bgColor)) {
            $this->backgroundColor = $this->prepareModuleValue($this->options->bgColor);
            return;
        }
        $this->backgroundColor = $this->prepareModuleValue('white');
    }
    /**
     * Creates a new Imagick instance
     */
    protected function createImage() : Imagick
    {
        $imagick = new Imagick();
        [$width, $height] = $this->getOutputDimensions();
        $imagick->newImage($width, $height, $this->backgroundColor, $this->options->imagickFormat);
        if ($this->options->quality > -1) {
            $imagick->setImageCompressionQuality(max(0, min(100, $this->options->quality)));
        }
        return $imagick;
    }
    /**
     * Sets the transparency color
     */
    protected function setTransparencyColor() : void
    {
        if (!$this->options->imageTransparent) {
            return;
        }
        $transparencyColor = $this->backgroundColor;
        if ($this::moduleValueIsValid($this->options->transparencyColor)) {
            $transparencyColor = $this->prepareModuleValue($this->options->transparencyColor);
        }
        $this->imagick->transparentPaintImage($transparencyColor, 0.0, 10, \false);
    }
    /**
     * Creates the QR image via ImagickDraw
     */
    protected function drawImage() : void
    {
        $this->imagickDraw = new ImagickDraw();
        $this->imagickDraw->setStrokeWidth(0);
        foreach ($this->matrix->getMatrix() as $y => $row) {
            foreach ($row as $x => $M_TYPE) {
                $this->module($x, $y, $M_TYPE);
            }
        }
        $this->imagick->drawImage($this->imagickDraw);
    }
    /**
     * draws a single pixel at the given position
     */
    protected function module(int $x, int $y, int $M_TYPE) : void
    {
        if (!$this->drawLightModules && !$this->matrix->isDark($M_TYPE)) {
            return;
        }
        $this->imagickDraw->setFillColor($this->getModuleValue($M_TYPE));
        if ($this->drawCircularModules && !$this->matrix->checkTypeIn($x, $y, $this->keepAsSquare)) {
            $this->imagickDraw->circle(($x + 0.5) * $this->scale, ($y + 0.5) * $this->scale, ($x + 0.5 + $this->circleRadius) * $this->scale, ($y + 0.5) * $this->scale);
            return;
        }
        $this->imagickDraw->rectangle($x * $this->scale, $y * $this->scale, ($x + 1) * $this->scale - 1, ($y + 1) * $this->scale - 1);
    }
}