<?php

namespace RegularLabs\Scoped\Intervention\Image\Gd\Commands;

use RegularLabs\Scoped\Intervention\Image\Commands\AbstractCommand;
class ResizeCommand extends AbstractCommand
{
    /**
     * Resizes image dimensions
     *
     * @param  \Intervention\Image\Image $image
     * @return boolean
     */
    public function execute($image)
    {
        $width = $this->argument(0)->value();
        $height = $this->argument(1)->value();
        $constraints = $this->argument(2)->type('closure')->value();
        // resize box
        $resized = $image->getSize()->resize($width, $height, $constraints);
        // modify image
        $this->modify($image, 0, 0, 0, 0, $resized->getWidth(), $resized->getHeight(), $image->getWidth(), $image->getHeight());
        return \true;
    }
    /**
     * Wrapper function for 'imagecopyresampled'
     *
     * @param  Image   $image
     * @param  int     $dst_x
     * @param  int     $dst_y
     * @param  int     $src_x
     * @param  int     $src_y
     * @param  int     $dst_w
     * @param  int     $dst_h
     * @param  int     $src_w
     * @param  int     $src_h
     * @return boolean
     */
    protected function modify($image, $dst_x, $dst_y, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h)
    {
        // create new image
        $modified = \imagecreatetruecolor(\intval($dst_w), \intval($dst_h));
        // get current image
        $resource = $image->getCore();
        // preserve transparency
        $transIndex = \imagecolortransparent($resource);
        if ($transIndex != -1) {
            $rgba = \imagecolorsforindex($modified, $transIndex);
            $transColor = \imagecolorallocatealpha($modified, $rgba['red'], $rgba['green'], $rgba['blue'], 127);
            \imagefill($modified, 0, 0, $transColor);
            \imagecolortransparent($modified, $transColor);
        } else {
            \imagealphablending($modified, \false);
            \imagesavealpha($modified, \true);
        }
        // copy content from resource
        $result = \imagecopyresampled($modified, $resource, $dst_x, $dst_y, $src_x, $src_y, \intval($dst_w), \intval($dst_h), $src_w, $src_h);
        // set new content as recource
        $image->setCore($modified);
        return $result;
    }
}
