settings.php

<?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/>.

/**
 * @package filter_translations
 * @author Andrew Hancox <andrewdchancox@googlemail.com>
 * @author Open Source Learning <enquiries@opensourcelearning.co.uk>
 * @link https://opensourcelearning.co.uk
 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 * @copyright 2021, Andrew Hancox
 */

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

if ($ADMIN->fulltree) {
    $list_of_translations = get_string_manager()->get_list_of_translations(true);

    $settings->add(new admin_setting_heading(
        'managetranslations',
        '',
        html_writer::link(
            new moodle_url('/filter/translations/managetranslations.php'),
            get_string('managetranslations', 'filter_translations'),
            ['class' => "btn btn-primary"]
        )
    ));

    $settings->add(new admin_setting_heading(
        'managetranslationissues',
        '',
        html_writer::link(
            new moodle_url('/filter/translations/managetranslationissues.php'),
            get_string('managetranslationissues', 'filter_translations'),
            ['class' => "btn btn-primary"]
        )
    ));


    $settings->add(new admin_setting_heading('performance', get_string('performance', 'admin'), ''));

    $settings->add(new admin_setting_configcheckbox(
        'filter_translations/showperfdata',
        get_string('showperfdata', 'filter_translations'),
        '',
        false
    ));

    $options = [];
    foreach ([cache_store::MODE_REQUEST, cache_store::MODE_SESSION, cache_store::MODE_APPLICATION] as $mode) {
        $options[$mode] = get_string('mode_' . $mode, 'cache');
    }
    $settings->add(new admin_setting_configselect(
        'filter_translations/cachingmode',
        get_string('cachingmode', 'filter_translations'),
        get_string('cachingmode_desc', 'filter_translations'),
        cache_store::MODE_REQUEST,
        $options
    ));

    $settings->add(
        new admin_setting_configtextarea(
            'filter_translations/untranslatedpages',
            new lang_string('untranslatedpages', 'filter_translations'),
            new lang_string('untranslatedpages_desc', 'filter_translations'),
            '/blocks/configurable_reports/viewreport.php'
        )
    ); 

    $settings->add(new admin_setting_configmultiselect(
        'filter_translations/excludelang',
        get_string('excludelang', 'filter_translations'),
        get_string('excludelang_desc', 'filter_translations'),
        [],
        $list_of_translations
    ));

    $settings->add(new admin_setting_heading('logging', get_string('logging', 'filter_translations'), ''));

    $settings->add(new admin_setting_configmultiselect(
        'filter_translations/logexcludelang',
        get_string('logexcludelang', 'filter_translations'),
        get_string('logexcludelang_desc', 'filter_translations'),
        [],
        $list_of_translations
    ));

    $settings->add(new admin_setting_configcheckbox(
        'filter_translations/logmissing',
        get_string('logmissing', 'filter_translations'),
        '',
        false
    ));

    $settings->add(new admin_setting_configcheckbox(
        'filter_translations/logstale',
        get_string('logstale', 'filter_translations'),
        '',
        false
    ));

    $settings->add(new admin_setting_configduration(
        'filter_translations/logdebounce',
        get_string('logdebounce', 'filter_translations'),
        '',
        DAYSECS
    ));

    /* $settings->add(new admin_setting_heading('languagestringreverseapi', get_string('languagestringreverse', 'filter_translations'), ''));

    $settings->add(new admin_setting_configcheckbox(
        'filter_translations/languagestringreverse_enable',
        get_string('languagestringreverse_enable', 'filter_translations'),
        '',
        false
    ));

    $settings->add(new admin_setting_heading('googletranslateapi', get_string('googletranslate', 'filter_translations'), ''));

    $settings->add(new admin_setting_configcheckbox(
        'filter_translations/google_enable',
        get_string('google_enable', 'filter_translations'),
        '',
        false
    ));

    $settings->add(new admin_setting_configcheckbox(
        'filter_translations/google_backoffonerror',
        get_string('google_backoffonerror', 'filter_translations'),
        '',
        false
    ));

    $settings->add(new admin_setting_configtext(
        'filter_translations/google_apiendpoint',
        get_string('google_apiendpoint', 'filter_translations'),
        '',
        'https://translation.googleapis.com/language/translate/v2',
        PARAM_URL
    ));

    $settings->add(new admin_setting_configtext(
        'filter_translations/google_apikey',
        get_string('google_apikey', 'filter_translations'),
        '',
        null,
        PARAM_RAW_TRIMMED,
        40
    )); */

    $settings->add(new admin_setting_heading('customapi', get_string('customapi', 'filter_translations', ''), ''));

    /* $settings->add(new admin_setting_configcheckbox(
        'filter_translations/translatetokinya',
        get_string('translatetokinya', 'filter_translations'),
        '',
        false
    )); */

    $selectedLanguages = get_config('filter_translations', 'languages');
    
    if (strstr($selectedLanguages, ',')) {
        $selectedLanguagesArray = explode(',', $selectedLanguages);
    } else {
        $selectedLanguagesArray = [$selectedLanguages];
    }

    foreach ($selectedLanguagesArray as $key => $selectedLanguage) {
        $selectedLanguagesArray[$selectedLanguage] = get_string_manager()->get_list_of_languages()[$selectedLanguage];
        unset($selectedLanguagesArray[$key]);
    }

    $setting = new admin_setting_configmultiselect('filter_translations/selectedlanguages', 'Selected Languages', '', [], $selectedLanguagesArray);
    $settings->add($setting);
    $setting->set_locked_flag_options(admin_setting_flag::DISABLED, true);

    $setting = new admin_setting_configmultiselect('filter_translations/languages', 'Languages', '', [], get_string_manager()->get_list_of_languages());
    $setting->set_updatedcallback('theme_reset_all_caches');
    $settings->add($setting);

    $setting = new admin_setting_configselect('filter_translations/contentlanguage', 'Content Language', '', '', $selectedLanguagesArray);
    $setting->set_updatedcallback('theme_reset_all_caches');
    $settings->add($setting);

    $setting = new admin_setting_configselect('filter_translations/widgetlanguage', 'Widget Language', '', '', $selectedLanguagesArray);
    $setting->set_updatedcallback('theme_reset_all_caches');
    $settings->add($setting);

    $setting = new admin_setting_configselect('filter_translations/usepopuptranslation', 'Use popup translation', '', '', ['', 'Yes', 'No']);
    $setting->set_updatedcallback('theme_reset_all_caches');
    $settings->add($setting);
}