settings.php

<?php
defined('MOODLE_INTERNAL') || die;

if ($hassiteconfig) {
    // Kreiramo glavnu kategoriju za MailChimp Sync
    $ADMIN->add('localplugins', new admin_category('local_mailchimpsync_category', get_string('pluginname', 'local_mailchimpsync')));

    // Glavna stranica postavki
    $settings = new admin_settingpage('local_mailchimpsync_settings', get_string('settings', 'local_mailchimpsync'));

    if ($ADMIN->fulltree) {
        // API Key
        $settings->add(new admin_setting_configtext(
            'local_mailchimpsync/apikey',
            get_string('apikey', 'local_mailchimpsync'),
            get_string('apikey_desc', 'local_mailchimpsync'),
            '',
            PARAM_TEXT
        ));

        $api_key = get_config('local_mailchimpsync', 'apikey');
        $lists = array();
        $merge_fields = array();

        if (!empty($api_key)) {
            $cache = \cache::make('local_mailchimpsync', 'apicalls');
            $lists = $cache->get('lists');

            if ($lists === false) {
                $api = new \local_mailchimpsync\api();
                $lists = $api->get_lists();
                $cache->set('lists', $lists);
            }

            // Only add these settings if API key is set and lists are retrieved
            if (!empty($lists)) {
                // Default List
                $settings->add(new admin_setting_configtext(
                    'local_mailchimpsync/default_list_id',
                    get_string('default_list_id', 'local_mailchimpsync'),
                    get_string('default_list_id_desc', 'local_mailchimpsync'),
                    '',
                    PARAM_TEXT
                ));

                // Cohort to List Mapping
                $cohorts = $DB->get_records_menu('cohort', null, 'name', 'id, name');

                if (!empty($cohorts)) {
                    foreach ($cohorts as $cohort_id => $cohort_name) {
                        $settings->add(new admin_setting_configselect(
                            "local_mailchimpsync/cohort_{$cohort_id}_list",
                            get_string('cohort_list', 'local_mailchimpsync', $cohort_name),
                            get_string('cohort_list_desc', 'local_mailchimpsync'),
                            '',
                            $lists
                        ));
                    }
                }

                // Field Mapping
                $userfields = [
                    'firstname' => get_string('firstname'),
                    'lastname' => get_string('lastname'),
                    'email' => get_string('email'),
                    'city' => get_string('city'),
                    'country' => get_string('country'),
                    'lang' => get_string('language'),
                    'timezone' => get_string('timezone'),
                    'phone1' => get_string('phone'),
                    'phone2' => get_string('phone2'),
                ];

                // Add custom profile fields
                $custom_fields = $DB->get_records('user_info_field', null, '', 'id, name, shortname');
                foreach ($custom_fields as $field) {
                    $userfields['profile_field_'.$field->shortname] = $field->name;
                }

                // MailChimp merge fields
                if (!empty($lists)) {
                    $first_list_id = array_keys($lists)[0];
                    $merge_fields = $cache->get('merge_fields_'.$first_list_id);
                    if ($merge_fields === false) {
                        $api = new \local_mailchimpsync\api();
                        $merge_fields = $api->get_merge_fields($first_list_id);
                        $cache->set('merge_fields_'.$first_list_id, $merge_fields);
                    }
                }

                $merge_field_options = array();
                foreach ($merge_fields as $field) {
                    $merge_field_options[$field['tag']] = $field['name'];
                }

                $settings->add(new admin_setting_configmultiselect(
                    'local_mailchimpsync/field_mapping',
                    get_string('field_mapping', 'local_mailchimpsync'),
                    get_string('field_mapping_desc', 'local_mailchimpsync'),
                    ['FNAME' => 'firstname', 'LNAME' => 'lastname', 'EMAIL' => 'email'],
                    array_combine(array_keys($userfields), array_keys($userfields))
                ));

                $settings->add(new admin_setting_configcheckbox(
                    'local_mailchimpsync/use_sync_field',
                    get_string('use_sync_field', 'local_mailchimpsync'),
                    get_string('use_sync_field_desc', 'local_mailchimpsync'),
                    0
                ));

                $custom_fields = $DB->get_records_menu('user_info_field', null, '', 'id, name');
                $settings->add(new admin_setting_configselect(
                    'local_mailchimpsync/sync_field',
                    get_string('sync_field', 'local_mailchimpsync'),
                    get_string('sync_field_desc', 'local_mailchimpsync'),
                    '',
                    $custom_fields
                ));
            }
        }
    }

    // Dodajemo glavnu stranicu postavki u kategoriju
    $ADMIN->add('local_mailchimpsync_category', $settings);

    // Dodajemo ostale stranice u kategoriju
    $ADMIN->add('local_mailchimpsync_category', new admin_externalpage(
        'local_mailchimpsync_sync',
        get_string('sync_page_title', 'local_mailchimpsync'),
        new moodle_url('/local/mailchimpsync/admin/sync.php')
    ));

    $ADMIN->add('local_mailchimpsync_category', new admin_externalpage(
        'local_mailchimpsync_stats',
        get_string('stats_page_title', 'local_mailchimpsync'),
        new moodle_url('/local/mailchimpsync/stats.php')
    ));

    $ADMIN->add('local_mailchimpsync_category', new admin_externalpage(
        'local_mailchimpsync_privacy',
        get_string('privacy_policy', 'local_mailchimpsync'),
        new moodle_url('/local/mailchimpsync/privacy_policy.php')
    ));
}