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| -rw-r--r-- | lib.php | 137 |
1 files changed, 137 insertions, 0 deletions
@@ -0,0 +1,137 @@ +<?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/>. + +/** + * Main functions of the plugin. + * + * @copyright 2018 "Valentin Popov" <info@valentineus.link> + * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later + * @package tool_apisiteadmins + */ + +defined("MOODLE_INTERNAL") || die(); + +/** + * Functions for working with the list of administrators. + * + * @copyright 2018 "Valentin Popov" <info@valentineus.link> + * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later + * @package tool_apisiteadmins + */ +class tool_apisiteadmins { + /** + * Adds a user to the list of administrators. + * + * @param number $userid System user ID + * @return boolean Result of execution + */ + public static function add_user($userid) { + if (!core_user::is_real_user($userid, true)) { + print_error("invaliduser", "error", null); + } + + $userid = (int)$userid; + $admins = self::get_list(); + $admins[$userid] = $userid; + + self::create_event("administrator_added", $userid); + return self::save_changes($admins); + } + + /** + * Removes a user from the list of administrators. + * + * @param number $userid System user ID + * @return boolean Result of execution + */ + public static function remove_user($userid) { + if (!core_user::is_real_user($userid, true)) { + print_error("invaliduser", "error", null); + } + + $userid = (int)$userid; + $admins = self::get_list(); + unset($admins[$userid]); + + self::create_event("administrator_deleted", $userid); + return self::save_changes($admins); + } + + /** + * Registers the user as the primary administrator. + * + * @param number $userid System user ID + * @return boolean Result of execution + */ + public static function set_main($userid) { + if (!core_user::is_real_user($userid, true)) { + print_error("invaliduser", "error", null); + } + + $userid = (int)$userid; + $admins = self::get_list(); + if (isset($admins[$userid])) { + unset($admins[$userid]); + array_unshift($admins, $userid); + } + + self::create_event("administrator_changed", $userid); + return self::save_changes($admins); + } + + /** + * Creates an entry in the system log. + * + * @param string $name Event name + * @param number $userid System user ID + */ + private static function create_event($name, $userid) { + $function = "tool_apisiteadmins\\event\\$name"; + $function::create(array("relateduserid" => $userid))->trigger(); + } + + /** + * Applies the changes on the site. + * + * @return array List of administrators + */ + private static function get_list() { + $config = get_config("core", "siteadmins"); + + $result = array(); + foreach (explode(",", $config) as $id) { + $id = (int)$id; + if (!empty($id)) { + $result[$id] = $id; + } + } + + return $result; + } + + /** + * Applies the changes on the site. + * + * @param array $admins List of administrators + */ + private static function save_changes($admins) { + if (empty($admins)) { + $admins = self::get_list(); + } + + return set_config("siteadmins", implode(",", $admins)); + } +} |