<?php
//
// 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/>.

/**
 * IServ enrolment plugin implementation
 *
 * This plugin synchronizes courses and their enrolments with an IServ school server.
 * Based partially on the OSS plugin by Frank Schütte
 *
 * @package    enrol
 * @subpackage iserv
 * @author     Jonas Lührig based on code by Frank Schütte based on code by Iñaki Arenaza
 * @copyright  1999 onwards Martin Dougiamas {@link http://moodle.com}
 * @copyright  2010 Iñaki Arenaza <iarenaza@eps.mondragon.edu>
 * @copyright  2020 Frank Schütte <fschuett@gymhim.de>
 * @copyright  2023 Gruelag GmbH <buero@gruelag.de>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

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

if ($ADMIN -> fulltree) {
    global $DB;

    // Initializing
    require_once ("{$CFG -> dirroot}/enrol/ldap/settingslib.php");
    require_once ("{$CFG -> dirroot}/enrol/oss/settings_callbacks.php");
    $yesno = array(get_string('no'), get_string('yes'));

    // Heading
    $settings -> add(
        new admin_setting_heading(
            'enrol_iserv_settings',
            get_string('pluginname','enrol_iserv'),
            get_string('plugin_description', 'enrol_iserv')
        )
    );


    // --- GROUP Settings --- //
    $settings->add(
        new admin_setting_heading(
            'enrol_iserv_group_settings',
            get_string('group_settings', 'enrol_iserv'),
            get_string('group_settings_desc', 'enrol_iserv')
        )
    );

    $settings->add(
        new admin_setting_configtext_trim_lower(
            'enrol_iserv/group_contexts',
            get_string('group_contexts_key', 'enrol_iserv'),
            get_string('group_contexts_desc', 'enrol_iserv'),
            'ou=groups,dc=mein-iserv,dc=de'
        )
    );

    $settings->add(
        new admin_setting_configtext_trim_lower(
            'enrol_iserv/group_object_class',
            get_string('group_object_class_key', 'enrol_iserv'),
            get_string('group_object_class_desc', 'enrol_iserv'),
            'uuidObject'
        )
    );

    $settings->add(
        new admin_setting_configtext_trim_lower(
            'enrol_iserv/group_attribute',
            get_string('group_attribute_key', 'enrol_iserv'),
            get_string('group_attribute_desc', 'enrol_iserv'),
            'cn'
        )
    );

    $settings->add(
        new admin_setting_configtext_trim_lower(
            'enrol_iserv/group_fullname_attribute',
            get_string('group_fullname_attribute_key', 'enrol_iserv'),
            get_string('group_fullname_attribute_desc', 'enrol_iserv'),
            'description'
        )
    );

    
    $settings->add(
        new admin_setting_configtext_trim_lower(
            'enrol_iserv/group_member_attribute',
            get_string('group_member_attribute_key', 'enrol_iserv'),
            get_string('group_member_attribute_desc', 'enrol_iserv'),
            "memberUid"
        )
    );

    $settings->add(
        new admin_setting_configselect(
            'enrol_iserv/group_member_attribute_is_dn',
            get_string('group_member_attribute_is_dn_key', 'enrol_iserv'),
            get_string('group_member_attribute_is_dn_desc', 'enrol_iserv'),
            0,
            $yesno
        )
    );

    $settings->add(
        new admin_setting_configcheckbox(
            'enrol_iserv/group_search_subtree',
            get_string('group_search_subtree_key', 'enrol_iserv'),
            get_string('group_search_subtree_desc', 'enrol_iserv'),
            0
        )
    );


    // --- ROLE Settings --- //
    $settings->add(
        new admin_setting_heading(
            'enrol_iserv_role_settings',
            get_string('role_settings', 'enrol_iserv'),
            get_string('role_settings_desc', 'enrol_iserv')
        )
    );

    $settings->add(
        new admin_setting_configtext_trim_lower(
            'enrol_iserv/role_contexts',
            get_string('role_contexts_key', 'enrol_iserv'),
            get_string('role_contexts_desc', 'enrol_iserv'),
            'ou=roles,dc=mein-iserv,dc=de'
        )
    );

    $settings->add(
        new admin_setting_configtext_trim_lower(
            'enrol_iserv/role_object_class',
            get_string('role_object_class_key', 'enrol_iserv'),
            get_string('role_object_class_desc', 'enrol_iserv'),
            'organizationalRole'
        )
    );

    $settings->add(
        new admin_setting_configtext_trim_lower(
            'enrol_iserv/teachers_role_name',
            get_string('teachers_role_name_key', 'enrol_iserv'),
            get_string('teachers_role_name_desc', 'enrol_iserv'),
            'ROLE_TEACHER'
        )
    );

    $settings->add(
        new admin_setting_configtext_trim_lower(
            'enrol_iserv/students_role_name',
            get_string('students_role_name_key', 'enrol_iserv'),
            get_string('students_role_name_desc', 'enrol_iserv'),
            'ROLE_STUDENT'
        )
    );

    
    $settings->add(
        new admin_setting_configtext_trim_lower(
            'enrol_iserv/role_member_attribute',
            get_string('role_member_attribute_key', 'enrol_iserv'),
            get_string('role_member_attribute_desc', 'enrol_iserv'),
            "roleOccupant"
        )
    );

    $settings->add(
        new admin_setting_configselect(
            'enrol_iserv/role_member_attribute_is_dn',
            get_string('role_member_attribute_is_dn_key', 'enrol_iserv'),
            get_string('role_member_attribute_is_dn_desc', 'enrol_iserv'),
            1,
            $yesno
        )
    );


    // --- GROUP<>COURSE MAPPING Settings --- //
    $settings->add(
        new admin_setting_heading(
            'enrol_iserv_coursemapping_settings',
            get_string('coursemapping', 'enrol_iserv'),
            get_string('coursemapping_desc', 'enrol_iserv')
        )
    );


    $settings->add(
        new admin_setting_configtext_trim_lower(
            'enrol_iserv/coursemapping_attribute',
            get_string('coursemapping_attribute_key', 'enrol_iserv'),
            get_string('coursemapping_attribute_desc', 'enrol_iserv'),
            'memberUid'
        )
    );
    
    $settings->add(
        new admin_setting_configtext_trim_lower(
            'enrol_iserv/coursemapping_attribute_value',
            get_string('coursemapping_attribute_value_key', 'enrol_iserv'),
            get_string('coursemapping_attribute_value_desc', 'enrol_iserv'),
            "moodlekurs"
        )
    );

    $settings->add(
        new admin_setting_configcheckbox(
            'enrol_iserv/coursemapping_use_attribute',
            get_string('coursemapping_use_attribute_key', 'enrol_iserv'),
            get_string('coursemapping_use_attribute_desc', 'enrol_iserv'),
            0
        )
    );


    $settings->add(
        new admin_setting_configtext_trim_lower(
            'enrol_iserv/coursemapping_prefixes',
            get_string('coursemapping_prefixes_key', 'enrol_iserv'),
            get_string('coursemapping_prefixes_desc', 'enrol_iserv'),
            "kurs.*"
        )
    );

    $settings->add(
        new admin_setting_configcheckbox(
            'enrol_iserv/coursemapping_use_prefixes',
            get_string('coursemapping_use_prefixes_key', 'enrol_iserv'),
            get_string('coursemapping_use_prefixes_desc', 'enrol_iserv'),
            1
        )
    );


    // --- COURSES Settings --- //
    $settings->add(
        new admin_setting_heading(
            'enrol_iserv_courses_settings',
            get_string('courses', 'enrol_iserv'),
            get_string('courses_desc', 'enrol_iserv')
        )
    );

    $setting = new admin_setting_configtext_trim_lower(
        'enrol_iserv/courses_category',
        get_string('courses_category_key', 'enrol_iserv'),
        get_string('courses_category_desc', 'enrol_iserv'),
        "Kurse"
    );
    $setting -> set_updatedcallback ('enrol_iserv_settings_courses_category_name_updated');
    $settings->add($setting);

    $settings->add(
        new admin_setting_configselect(
            'enrol_iserv/courses_autocreate',
            get_string('courses_autocreate_key', 'enrol_iserv'),
            get_string('courses_autocreate_desc', 'enrol_iserv'),
            1,
            $yesno
        )
    );

    $settings->add(
        new admin_setting_configselect(
            'enrol_iserv/courses_autoremove',
            get_string('courses_autoremove_key', 'enrol_iserv'),
            get_string('courses_autoremove_desc', 'enrol_iserv'),
            1,
            $yesno
        )
    );

    $settings->add(
        new admin_setting_configselect(
            'enrol_iserv/courses_category_autocreate',
            get_string('courses_category_autocreate_key', 'enrol_iserv'),
            get_string('courses_category_autocreate_desc', 'enrol_iserv'),
            1,
            $yesno
        )
    );

    $enrol_iserv_courses = array();
    $enrol_iserv_coursenames = $DB -> get_records_sql('SELECT * FROM {course} ORDER BY fullname');
    foreach ($enrol_iserv_coursenames as $key => $coursename) {
        $enrol_iserv_courses[$coursename->id] = "{$coursename -> fullname} ({$coursename->id})";
    }
    $enrol_iserv_courses[0] = get_string('course_template_none','enrol_iserv');

    $settings->add(
        new admin_setting_configselect(
            'enrol_iserv/courses_template',
            get_string('courses_template_key', 'enrol_iserv'),
            get_string('courses_template_desc', 'enrol_iserv'),
            0,
            $enrol_iserv_courses
        )
    );

    $options = get_default_enrol_roles (context_system::instance ());
    $teacher = get_archetype_roles ('editingteacher');
    $teacher = reset ($teacher);

    $settings->add(
        new admin_setting_configselect(
            'enrol_iserv/courses_teacher_role',
            get_string('courses_teacher_role_key', 'enrol_iserv'),
            get_string('courses_teacher_role_desc', 'enrol_iserv'),
            $teacher -> id,
            $options
        )
    );

    $options = get_default_enrol_roles (context_system::instance ());
    $student = get_archetype_roles ('student');
    $student = reset ($student);

    $settings->add(
        new admin_setting_configselect(
            'enrol_iserv/courses_student_role',
            get_string('courses_student_role_key', 'enrol_iserv'),
            get_string('courses_student_role_desc', 'enrol_iserv'),
            $student -> id,
            $options
        )
    );
}