<?php
// +----------------------------------------------------------------------
// | YwxApp [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2026-2036 http://ywxapp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Author: ywxapp<admin@ywxapp.cn>
// +----------------------------------------------------------------------
declare (strict_types = 1);

namespace addon\forum\controller\backend;

use think\facade\Config;
use ywxapp\controller\BackendBase;
use ywxapp\service\AddonService;

/**
 * 编辑器（UEditor）配置
 *
 * 在后台可视化管理发帖富文本编辑器的参数：
 *   上传目录、图片/附件/视频的允许类型与大小上限、远程图片抓取开关、初始高度。
 * 数据持久化到框架统一的插件配置表（wxapp_addon_config），运行时由
 * AddonService::config('forum') 读取并与 config.php 默认值合并。
 *
 * @author ywxapp <admin@ywxapp.cn>
 */
class Editor extends BackendBase
{
    /**
     * 可被后台保存的配置字段 => 默认值
     */
    protected array $fields = [
        'editor_upload_dir'  => 'uploads/forum',
        'editor_image_ext'   => 'jpg,jpeg,png,gif,bmp,webp',
        'editor_image_size'  => 10,
        'editor_file_ext'    => 'zip,rar,7z,pdf,doc,docx,xls,xlsx,ppt,pptx,txt,md',
        'editor_file_size'   => 50,
        'editor_video_ext'   => 'mp4,webm,ogg,mov',
        'editor_video_size'  => 100,
        'editor_catch_image' => 1,
        'editor_height'      => 360,
    ];

    /**
     * 读取当前有效配置（config.php 默认 + 后台保存覆盖）
     */
    protected function currentConfig(): array
    {
        $defaults = (array) Config::get('forum', []);
        $saved    = AddonService::config('forum');
        // 用 $fields 的默认值兜底，确保所有后台字段都有值（模板无需 default 过滤器）
        return array_merge($this->fields, $defaults, $saved);
    }

    /**
     * 配置页
     */
    public function index()
    {
        $cfg = $this->currentConfig();
        $this->assign('cfg', $cfg);
        return $this->fetch('editor/index');
    }

    /**
     * 保存配置
     */
    public function save()
    {
        $post = (array) $this->request->post();

        $values = [];
        foreach ($this->fields as $key => $default) {
            if (!isset($post[$key])) {
                continue;
            }
            $raw = $post[$key];

            if (is_bool($default)) {
                $values[$key] = $raw ? 1 : 0;
            } elseif (is_int($default)) {
                $values[$key] = (int) $raw;
            } else {
                // 字符串 / 逗号分隔扩展名列表：去空格、过滤空项、小写
                $str = trim((string) $raw);
                if (str_contains($str, ',')) {
                    $parts = array_filter(array_map(
                        fn($s) => strtolower(trim($s, " .\t\n\r\0\x0B")),
                        explode(',', $str)
                    ), fn($s) => $s !== '');
                    $str = implode(',', $parts);
                }
                $values[$key] = $str;
            }
        }

        // 上传目录安全校验：仅允许相对路径，禁止目录穿越
        if (isset($values['editor_upload_dir'])) {
            $dir = preg_replace('#\.+/#', '', str_replace('\\', '/', $values['editor_upload_dir']));
            $values['editor_upload_dir'] = trim($dir, '/') ?: $this->fields['editor_upload_dir'];
        }

        AddonService::config('forum', $values);

        return $this->result->success([], '编辑器配置已保存');
    }
}