<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Folder download
 *
 * @package   mod_folder
 * @copyright 2015 Andrew Hancox <andrewdchancox@googlemail.com>
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

require_once(__DIR__ . "/../../config.php");

$id = required_param('id', PARAM_INT);  // Course module ID.
$cm = get_coursemodule_from_id('folder', $id, 0, true, MUST_EXIST);

$course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);

require_course_login($course, true, $cm);
$context = context_module::instance($cm->id);
require_capability('mod/folder:view', $context);

$folder = $DB->get_record('folder', array('id' => $cm->instance), '*', MUST_EXIST);

$downloadable = folder_archive_available($folder, $cm);
if (!$downloadable) {

<     print_error('cannotdownloaddir', 'repository');



>     throw new \moodle_exception('cannotdownloaddir', 'repository');


}


< folder_downloaded($folder, $course, $cm, $context);
< 


$fs = get_file_storage();

< $file = $fs->get_file($context->id, 'mod_folder', 'content', 0, '/', '.');
< if (!$file) {
<     print_error('cannotdownloaddir', 'repository');



> $files = $fs->get_area_files($context->id, 'mod_folder', 'content');
> if (empty($files)) {
>     throw new \moodle_exception('cannotdownloaddir', 'repository');


}


< $zipper   = get_file_packer('application/zip');
< $filename = shorten_filename(clean_filename($folder->name . "-" . date("Ymd")) . ".zip");
< $temppath = make_request_directory() . $filename;
< 
< if ($zipper->archive_to_pathname(array('/' => $file), $temppath)) {
<     send_temp_file($temppath, $filename);
< } else {
<     print_error('cannotdownloaddir', 'repository');



> // Log zip as downloaded.
> folder_downloaded($folder, $course, $cm, $context);
> 
> // Close the session.
> \core\session\manager::write_close();
> 
> $foldername = format_string($folder->name, true, ["context" => $context]);
> $filename = shorten_filename(clean_filename($foldername . "-" . date("Ymd")) . ".zip");
> $zipwriter = \core_files\archive_writer::get_stream_writer($filename, \core_files\archive_writer::ZIP_WRITER);
> 
> foreach ($files as $file) {
>     if ($file->is_directory()) {
>         continue;


}

>     $pathinzip = $file->get_filepath() . $file->get_filename();
>     $zipwriter->add_file_from_stored_file($pathinzip, $file);
> }
> 
> // Finish the archive.
> $zipwriter->finish();
> exit();