<?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/>.

namespace core\plugininfo;

use core_plugin_manager;
use moodle_url;

/**
 * SMS gateway subplugin info class.
 *
 * @package core
 * @copyright 2024 Andrew Lyons <andrew@nicols.co.uk>
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class smsgateway extends base {
    #[\Override]
    public function is_uninstall_allowed(): bool {
        return true;
    }

    #[\Override]
    public function get_settings_section_name(): string {
        return "smsgateway{$this->name}";
    }

    #[\Override]
    public function load_settings(
        \part_of_admin_tree $adminroot,
        $parentnodename,
        $hassiteconfig,
    ): void {
        global $CFG, $USER, $DB, $OUTPUT, $PAGE; // In case settings.php wants to refer to them.
        /** @var \admin_root $ADMIN */
        $ADMIN = $adminroot; // May be used in settings.php.
        $plugininfo = $this; // Also can be used inside settings.php.

        if (!$this->is_installed_and_upgraded()) {
            return;
        }

        if (!$hassiteconfig) {
            return;
        }

        $section = $this->get_settings_section_name();

        $settings = null;
        if (file_exists($this->full_path('settings.php'))) {
            $settings = new \admin_settingpage($section, $this->displayname, 'moodle/site:config', $this->is_enabled() === false);
            include($this->full_path('settings.php')); // This may also set $settings to null.
        }
        if ($settings) {
            $ADMIN->add($parentnodename, $settings);
        }
    }

    #[\Override]
    public static function get_manage_url(): moodle_url {
        return new moodle_url('/sms/sms_gateways.php');
    }

    #[\Override]
    public static function get_enabled_plugins(): ?array {
        $pluginmanager = core_plugin_manager::instance();
        $plugins = $pluginmanager->get_installed_plugins('smsgateway');

        if (!$plugins) {
            return [];
        }

        $plugins = array_keys($plugins);

        // Filter to return only enabled plugins.
        $enabled = [];
        foreach ($plugins as $plugin) {
            $disabled = get_config('smsgateway_' . $plugin, 'disabled');
            if (empty($disabled)) {
                $enabled[$plugin] = $plugin;
            }
        }
        return $enabled;
    }
}