<?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/>.

/**
 * Class for availability plugins.
 *
 * @package core
 * @copyright 2014 The Open University
 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
namespace core\plugininfo;

defined('MOODLE_INTERNAL') || die();

/**
 * Class for availability plugins.
 *
 * @package core
 * @copyright 2014 The Open University
 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class availability extends base {
    public static function get_enabled_plugins() {
        global $DB;

        // Get all available plugins.
        $plugins = \core_plugin_manager::instance()->get_installed_plugins('availability');
        if (!$plugins) {
            return array();
        }

        // Check they are enabled using get_config (which is cached and hopefully fast).
        $enabled = array();
        foreach ($plugins as $plugin => $version) {
            $disabled = get_config('availability_' . $plugin, 'disabled');
            if (empty($disabled)) {
                $enabled[$plugin] = $plugin;
            }
        }

        return $enabled;
    }

    /**
     * Defines if there should be a way to uninstall the plugin via the administration UI.
     *
     * @return bool
     */
    public function is_uninstall_allowed() {
        return true;
    }
}