<?php
namespace Concrete\Core\Permission\Key;

use Concrete\Core\File\File;
use Loader;
use User;
use \Concrete\Core\Permission\Duration as PermissionDuration;

class AddFileFileSetKey extends FileSetKey
{

    public function getAllowedFileExtensions()
    {
        $u = new User();

        $extensions = array();
        if ($u->isSuperUser()) {
            $extensions = Loader::helper('concrete/file')->getAllowedFileExtensions();
            return $extensions;
        }

        $pae = $this->getPermissionAccessObject();
        if (!is_object($pae)) {
            return array();
        }

        $accessEntities = $u->getUserAccessEntityObjects();
        $accessEntities = $pae->validateAndFilterAccessEntities($accessEntities);
        $list = $this->getAccessListItems(FileSetKey::ACCESS_TYPE_ALL, $accessEntities);
        $list = PermissionDuration::filterByActive($list);

        foreach ($list as $l) {
            if ($l->getFileTypesAllowedPermission() == 'N') {
                $extensions = array();
            }
            if ($l->getFileTypesAllowedPermission() == 'C') {
                $extensions = array_unique(array_merge($extensions, $l->getFileTypesAllowedArray()));
            }
            if ($l->getFileTypesAllowedPermission() == 'A') {
                $extensions = Loader::helper('concrete/file')->getAllowedFileExtensions();
            }
        }

        $extensions = array_map('strtolower', $extensions);
        return $extensions;
    }

    public function validate($file = false)
    {
        $extensions = $this->getAllowedFileExtensions();
        if ($file instanceof File) {
            $extension = $file->getExtension();
        } else {
            $extension = $file;
        }
        $extension = strtolower($extension);
        if ($extension != false) {
            return in_array($extension, $extensions);
        } else {
            return count($extensions) > 0;
        }
    }


}