<?php
namespace imagestore;

class Controller_Image extends Controller_Base
{
    public function handle($uri)
    {
        if (!isset($_GET['path'])) {
            return $this->error('400 Bad request', 'Path missing');
        }

        $path = $GLOBALS['imagestore']['basedir'] . $_GET['path'];
        if (!file_exists($path)) {
            return $this->error('404 Not Found', 'File not found');
        }
        
        if (!isset($_GET['w'])) {
            header('Content-type: image/jpeg');
            header('Content-length: ' . filesize($path));
            return readfile($path);
        }
        
        //resize
        $img = imagecreatefromjpeg($path);

        $newWidth = (int) $_GET['w'];
        //if (isset($_GET['h'])) {
        //    $newHeight = (int) $_GET['h'];
        //} else {
        $newHeight = intval($newWidth / imagesx($img) * imagesy($img));
        //}
        
        $thumb = imagecreatetruecolor($newWidth, $newHeight);
        // Resize
        imagecopyresampled(
            $thumb, $img, 0, 0, 0, 0,
            $newWidth, $newHeight, imagesx($img), imagesy($img)
        );
        imagedestroy($img);

        header('Content-type: image/jpeg');
        imagejpeg($thumb);
        imagedestroy($thumb);
    }
}
?>