<?php

class App_Image_View
{
    protected $name;

    public function __construct($opt)
    {
        if (isset($opt['restAlias'])) {
            $this->name = rawurldecode($opt['restAlias']);
        }
    }

    public function getMagicFile()
    {
        $zendMime = new Zend_Validate_File_MimeType('');
        return $zendMime->getMagicFile();
    }

    public function exec()
    {
        $info = Qs_ImageFs::getThumbnailInfo($this->name);
        $file = $width = $height = $force = $method = null;
        extract($info);
        if ($width || $height) {
            $name = Qs_ImageFs::resize(
                $file,
                array(
                    'width'     => $width,
                    'height'    => $height,
                    'force'     => $force,
                    'method'    => $method,
                    'sizeCheck' => true
                )
            );
            if (false !== $name) {
                $mimefile = $this->getMagicFile();
                if (class_exists('finfo', false)) {
                    $const = defined('FILEINFO_MIME_TYPE') ? FILEINFO_MIME_TYPE : FILEINFO_MIME;
                    if (!empty($mimefile)) {
                        $mime = new finfo($const, $mimefile);
                    } else {
                        $mime = new finfo($const);
                    }
                    if ($mime !== false) {
                        $type = $mime->file($name);
                    }
                    unset($mime);
                }
                if (empty($type) && (function_exists('mime_content_type') && ini_get('mime_magic.magicfile'))) {
                    $type = mime_content_type($name);
                }
                if (!empty($type)) {
                    header('Content-Type: ' . $type);
                    header('Content-Length: ' . filesize($name));
                    if (ob_get_length()) {
                        ob_clean();
                        flush();
                    }
                    readfile($name);
                    exit;
                } else {
                    Qs_Http::redirect(BASE_URL . '/' . Qs_ImageFs::quotePath($name));
                }
            }
            header('HTTP/1.0 404 Not Found');
            exit;
        } else {
            Qs_Http::redirect(BASE_URL . '/' . Qs_ImageFs::quotePath($file));
        }
    }
}