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<?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/>.
/**
* Allows the user to manage calendar subscriptions.
*
* @copyright 2012 Jonathan Harker
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @package calendar
*/
namespace core_calendar\local\event\forms;
defined('MOODLE_INTERNAL') || die();
require_once($CFG->libdir . '/formslib.php');
/**
* Form for adding a subscription to a Moodle course calendar.
* @copyright 2012 Jonathan Harker
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class managesubscriptions extends \moodleform {
use eventtype;
/**
* Defines the form used to add calendar subscriptions.
*/
public function definition() {
global $PAGE;
$mform = $this->_form;
$eventtypes = calendar_get_allowed_event_types();
if (in_array(true, $eventtypes, true) === false) {
print_error('nopermissiontoupdatecalendar');
}
$mform->addElement('header', 'addsubscriptionform', get_string('importcalendarheading', 'calendar'));
// Name.
$mform->addElement('text', 'name', get_string('subscriptionname', 'calendar'), array('maxsize' => '255', 'size' => '40'));
$mform->addRule('name', get_string('required'), 'required');
$mform->setType('name', PARAM_TEXT);
// Import from (url | importfile).
$mform->addElement('html', get_string('importfrominstructions', 'calendar'));
$choices = array(CALENDAR_IMPORT_FROM_FILE => get_string('importfromfile', 'calendar'),
CALENDAR_IMPORT_FROM_URL => get_string('importfromurl', 'calendar'));
$mform->addElement('select', 'importfrom', get_string('importcalendarfrom', 'calendar'), $choices);
$mform->setDefault('importfrom', CALENDAR_IMPORT_FROM_URL);
// URL.
$mform->addElement('text', 'url', get_string('importfromurl', 'calendar'), array('maxsize' => '255', 'size' => '50'));
// Cannot set as PARAM_URL since we need to allow webcal:// protocol.
$mform->setType('url', PARAM_RAW);
$mform->setForceLtr('url');
// Poll interval
$choices = calendar_get_pollinterval_choices();
$mform->addElement('select', 'pollinterval', get_string('pollinterval', 'calendar'), $choices);
$mform->setDefault('pollinterval', 604800);
$mform->addHelpButton('pollinterval', 'pollinterval', 'calendar');
$mform->setType('pollinterval', PARAM_INT);
// Import file
$mform->addElement('filepicker', 'importfile', get_string('importfromfile', 'calendar'), null, array('accepted_types' => '.ics'));
// Disable appropriate elements depending on import from value.
$mform->hideIf('pollinterval', 'importfrom', 'eq', CALENDAR_IMPORT_FROM_FILE);
$mform->hideIf('url', 'importfrom', 'eq', CALENDAR_IMPORT_FROM_FILE);
$mform->hideIf('importfile', 'importfrom', 'eq', CALENDAR_IMPORT_FROM_URL);
// Add the select elements for the available event types.
$this->add_event_type_elements($mform, $eventtypes);
// Eventtype: 0 = user, 1 = site, anything else = course ID.
$mform->addElement('submit', 'add', get_string('add'));
// Add the javascript required to enhance this mform.
$PAGE->requires->js_call_amd('core_calendar/event_form', 'init', [$mform->getAttribute('id')]);
}
/**
* Validates the returned data.
*
* @param array $data
* @param array $files
* @return array
*/
public function validation($data, $files) {
global $USER;
$errors = parent::validation($data, $files);
$eventtype = isset($data['eventtype']) ? $data['eventtype'] : null;
$coursekey = ($eventtype == 'group') ? 'groupcourseid' : 'courseid';
$courseid = (!empty($data[$coursekey])) ? $data[$coursekey] : null;
$eventtypes = calendar_get_allowed_event_types($courseid);
if (empty($eventtype) || !isset($eventtypes[$eventtype])) {
$errors['eventtype'] = get_string('invalideventtype', 'calendar');
}
if ($data['importfrom'] == CALENDAR_IMPORT_FROM_FILE) {
if (empty($data['importfile'])) {
$errors['importfile'] = get_string('errorrequiredurlorfile', 'calendar');
} else {
// Make sure the file area is not empty and contains only one file.
$draftitemid = $data['importfile'];
$fs = get_file_storage();
$usercontext = \context_user::instance($USER->id);
$files = $fs->get_area_files($usercontext->id, 'user', 'draft', $draftitemid, 'id DESC', false);
if (count($files) !== 1) {
$errors['importfile'] = get_string('errorrequiredurlorfile', 'calendar');
}
}
} else if (($data['importfrom'] == CALENDAR_IMPORT_FROM_URL)) {
// Clean input calendar url.
$url = clean_param($data['url'], PARAM_URL);
if (empty($url) || ($url !== $data['url'])) {
$errors['url'] = get_string('invalidurl', 'error');
}
} else {
// Shouldn't happen.
$errors['url'] = get_string('errorrequiredurlorfile', 'calendar');
}
return $errors;
}
public function definition_after_data() {
$mform =& $this->_form;
$mform->applyFilter('url', static::class . '::strip_webcal');
$mform->applyFilter('url', 'trim');
}
/**
* Replace webcal:// urls with http:// as
* curl does not understand this protocol
*
* @param string @url url to examine
* @return string url with webcal:// replaced
*/
public static function strip_webcal($url) {
if (strpos($url, 'webcal://') === 0) {
$url = str_replace('webcal://', 'http://', $url);
}
return $url;
}
}