<?php

namespace ctiso\Tools;

use GdImage;

class Image
{
    /**
     * @param string $uri
     * @return GdImage|false
     */
    static function load($uri): GdImage|false
    {
        $e = strtolower(pathinfo($uri, PATHINFO_EXTENSION));
        switch ($e) {
            case 'png': return imagecreatefrompng($uri);
            case 'jpeg': case 'jpg': return imagecreatefromjpeg($uri);
            case 'gif': return imagecreatefromgif($uri);
        }
        return false;
    }

    static function fit(GdImage $image, int $prewidth, int $preheight, bool $force = true): GdImage|false
    {
        $width = imagesx($image);
        $height = imagesy($image);
        $percent = min($prewidth / $width, $preheight / $height);
        if ($percent > 1 && !$force) $percent = 1;
        $new_width = $width * $percent;
        $new_height = $height * $percent;


        $image_p = imagecreatetruecolor($new_width, $new_height);
        imagecopyresampled($image_p, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
        return $image_p;
    }

    /**
     * @param GdImage $image
     * @param string $uri
     * @return bool
     */
    static function save($image, $uri): bool
    {
        $e = strtolower(pathinfo($uri, PATHINFO_EXTENSION));
        switch ($e) {
            case 'jpg': imagejpeg($image, $uri, 100); break;
            case 'png': imagepng($image, $uri); break;
            case 'gif': imagegif($image, $uri); break;
        }
        return false;
    }
}