<?php

namespace {

    use Illuminate\Support\HigherOrderTapProxy;

    if (!function_exists('tap')) {
        /**
         * Call the given Closure with the given value then return the value.
         *
         * @param  mixed         $value
         * @param  callable|null $callback
         *
         * @return mixed
         */
        function tap($value, $callback = null)
        {
            if ($callback === null) {
                return new HigherOrderTapProxy($value);
            }

            $callback($value);

            return $value;
        }
    }
}

namespace Illuminate\Support {

    class HigherOrderTapProxy
    {
        /**
         * The target being tapped.
         *
         * @var mixed
         */
        public $target;

        /**
         * Create a new tap proxy instance.
         *
         * @param  mixed $target
         *
         * @return void
         */
        public function __construct($target)
        {
            $this->target = $target;
        }

        /**
         * Dynamically pass method calls to the target.
         *
         * @param  string $method
         * @param  array  $parameters
         *
         * @return mixed
         */
        public function __call($method, $parameters)
        {
            $this->target->{$method}(...$parameters);

            return $this->target;
        }
    }
}

namespace Finagin {

    use RuntimeException;

    class Image
    {
        protected const READERS = [
            'imagecreatefrombmp',
            'imagecreatefromgd2',
            'imagecreatefromgd2part',
            //'imagecreatefromgd',
            'imagecreatefromgif',
            'imagecreatefromjpeg',
            'imagecreatefrompng',
            'imagecreatefromstring',
            'imagecreatefromwbmp',
            'imagecreatefromwebp',
            'imagecreatefromxbm',
            'imagecreatefromxpm',
        ];

        /**
         * @var resource|null
         */
        protected $source;

        public function __construct($filename)
        {
            $this->source = static::read($filename);
        }

        protected static function read(string $filename)
        {
            $image = null;

            set_error_handler(function () {
                throw new RuntimeException;
            }, E_ALL);

            foreach (static::READERS as $reader) {
                try {
                    $image = $reader($filename);
                    break;
                } catch (\Throwable $t) {
                }
            }

            restore_error_handler();

            return $image;
        }

        public static function tap($value, $callback)
        {
            $callback($value);

            return $value;
        }

        public function rotate(float $degrees)
        {
            $width = imagesx($this->source);
            $height = imagesy($this->source);

            $max = max($width, $height);

            $top = ($max === $width) ? ($max - $height) / 2 : 0;
            $left = ($max === $width) ? 0 : ($max - $width) / 2;

            $image = imagecreatetruecolor($max, $max);
            $border_color = imagecolorallocate($image, 255, 255, 255);
            imagefilledrectangle($image, 0, 0, $max, $max, $border_color);

            imagecopyresized($image, $this->source, $left, $top, 0, 0, $width, $height, $width, $height);

            $transColor = imagecolorallocatealpha($image, 255, 255, 255, 127);
            $this->source = imagerotate($image, $degrees, $transColor);
        }

        public function save($filename)
        {
            imagepng($this->source, $filename);
        }
    }
}

namespace {
    $input = __DIR__.'/test.png';
    $output = $input;

    tap(new \Finagin\Image($input))
        ->rotate(90)
        ->save($output);
}