<?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/>.

/**
 * Admin setting: site-wide role × feature access matrix.
 *
 * @package    mod_meetletacbfree
 * @copyright  2026 MeetLet <info@meetlet.net>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

namespace mod_meetletacbfree\admin;

use admin_setting;
use mod_meetletacbfree\local\featureaccess;

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

/**
 * Stores the site default feature-access JSON used when an activity does not override.
 */
class setting_featureaccess extends admin_setting {
    public function __construct() {
        parent::__construct(
            'meetletacbfree/featureaccess',
            get_string('featureaccess', 'meetletacbfree'),
            get_string('featureaccess_desc', 'meetletacbfree'),
            json_encode(featureaccess::builtin_defaults(), JSON_UNESCAPED_UNICODE)
        );
    }

    public function get_setting() {
        return $this->config_read($this->name);
    }

    public function write_setting($data) {
        if (!is_array($data)) {
            $data = [];
        }
        $json = featureaccess::matrix_from_post($data);
        return $this->config_write($this->name, $json) ? '' : get_string('errorsetting', 'admin');
    }

    public function output_html($data, $query = '') {
        $matrix = featureaccess::builtin_defaults();
        if (is_string($data) && $data !== '') {
            $decoded = json_decode($data, true);
            if (is_array($decoded) && !empty($decoded)) {
                $matrix = featureaccess::normalize($decoded);
            }
        } else if (is_array($data) && !empty($data)) {
            $json = featureaccess::matrix_from_post($data);
            $decoded = json_decode($json, true);
            if (is_array($decoded)) {
                $matrix = featureaccess::normalize($decoded);
            }
        }

        $html = access_reset_ui::toolbar('featureaccess');
        $html .= featureaccess::render_matrix_html($matrix, $this->get_full_name());
        return format_admin_setting(
            $this,
            $this->visiblename,
            $html,
            $this->description,
            true,
            '',
            get_string('featureaccess_usesite', 'meetletacbfree'),
            $query
        );
    }
}