<?php
/**
 * Generate new size and save images to cache
 * @param $_GET['id'] id of image
 * @param $_GET['x'] new image width
 * @param $_GET['y'] new image height
 * @param $_GET['type'] 0-fit  or 1-resize
 * @param $_GET['grey'] 0-nomral 1-greyscale
 */
$id       = preg_replace('#[^a-zA-Z0-9_/\.]#', '', $_GET['id']);
$id       = str_replace('..', '', $id);
$x        = (int) $_GET['x'];
$y        = (int) $_GET['y'];
$type     = (int) $_GET['type'];
$filename = '/var/www/static/cache' . $id . '-' . $x . '-' . $y . '-' . $type . '.jpg';
require_once 'Image/Transform.php';

function chceckError($item)
{
    if (PEAR::isError($item))
    {
        header("HTTP/1.0 404 Not Found");
        die();
    }
}

$it = Image_Transform::factory('GD');
print_r($it);
//chceckError($it);
if (PEAR::isError($it->load('orginal/' . $id . '.jpg')))
{
    chceckError($it->load('no_image.jpg'));
}


switch ($type)
{

    case 0:
        if ($x == 0)
            $x             = 10000;
        if ($y == 0)
            $y             = 10000;
        chceckError($it->fit($x, $y));
        break;
    case 1:
        $ratio         = $x / $y;
        $orginal_ratio = ($it->getImageWidth() / $it->getImageHeight());

        if ($orginal_ratio < $ratio)
        {
            chceckError($it->scaleByX($x));
            $starty = ($it->getNewImageHeight() - $y) / 3;
            chceckError($it->crop($x, $y, 0, $starty));
        }
        else
        {
            chceckError($it->scaleByY($y));
            $startx = ($it->getNewImageWidth() - $x) / 2;
            chceckError($it->crop($x, $y, $startx, 0));
        }
        break;
    case 2:
        break;
    default:
        header("HTTP/1.0 404 Not Found");
        die();
}

if ($_GET['grey'] == 1)
    chceckError($it->greyscale());

$it2 = clone $it;

chceckError($it2->save($filename));
$time = gmdate('D, d M Y H:i:s', filemtime($filename)) . ' GMT';
header('Last-Modified: ' . $time);
chceckError($it->display());
?>