<?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 app\backend\controller;

use think\facade\Request;
use think\facade\View;
use app\backend\model\NavMenu;
use ywxapp\controller\BackendBase;

/**
 * 前台主导航菜单管理（支持两级下拉，可后台配置）.
 */
class Navbar extends BackendBase
{
    protected function initialize()
    {
    }

    /**
     * 列表页.
     */
    public function index()
    {
        if (Request::isAjax()) {
            $list = NavMenu::getAdminTree();
            return json(['code' => 0, 'msg' => 'ok', 'data' => $list, 'count' => count($list)]);
        }
        return View::fetch();
    }

    /**
     * 添加/编辑页（页面式，复用 edit.html）.
     */
    public function edit($id = 0)
    {
        $row = $id ? NavMenu::find($id) : null;
        if (Request::isPost()) {
            $data = [
                'parent_id' => (int) Request::post('parent_id', 0),
                'title'     => trim((string) Request::post('title', '')),
                'url'       => trim((string) Request::post('url', '')),
                'icon'      => trim((string) Request::post('icon', '')),
                'sort'      => (int) Request::post('sort', 0),
                'status'    => (int) Request::post('status', 1),
            ];
            if ($data['title'] === '') {
                return json(['code' => 1, 'msg' => '请输入菜单名称']);
            }
            // 不能把自己设为自己的父级
            if ($id && $data['parent_id'] === (int) $id) {
                return json(['code' => 1, 'msg' => '父级不能选择自己']);
            }
            if ($id) {
                $row = NavMenu::find($id);
                $row->save($data);
                return json(['code' => 0, 'msg' => '已保存']);
            }
            NavMenu::create($data);
            return json(['code' => 0, 'msg' => '已添加']);
        }
        // 父级下拉选项（仅一级）
        $parents = NavMenu::where('parent_id', 0)
            ->where('delete_at', 0)
            ->order('sort', 'asc')
            ->field('id,title')
            ->select();
        View::assign('parents', $parents);
        View::assign('row', $row);
        return View::fetch();
    }

    /**
     * 保存（弹窗式 AJAX 提交，与前端 nav.js 对应）.
     */
    public function save()
    {
        $data = [
            'parent_id' => (int) Request::post('parent_id', 0),
            'title'     => trim((string) Request::post('title', '')),
            'url'       => trim((string) Request::post('url', '')),
            'icon'      => trim((string) Request::post('icon', '')),
            'sort'      => (int) Request::post('sort', 0),
            'status'    => (int) Request::post('status', 1),
        ];
        if ($data['title'] === '') {
            return json(['code' => 1, 'msg' => '请输入菜单名称']);
        }
        $id = (int) Request::post('id', 0);
        if ($id) {
            if ($data['parent_id'] === $id) {
                return json(['code' => 1, 'msg' => '父级不能选择自己']);
            }
            NavMenu::find($id)->save($data);
            return json(['code' => 0, 'msg' => '已保存']);
        }
        NavMenu::create($data);
        return json(['code' => 0, 'msg' => '已添加']);
    }

    /**
     * 更新（与 save 同逻辑，兼容 PUT）.
     */
    public function update()
    {
        return $this->save();
    }

    /**
     * 删除（支持单 id；有子项时拒绝，避免孤儿）.
     */
    public function delete($id = 0)
    {
        $id = $id ?: (int) Request::post('id', 0);
        if (! $id) {
            return json(['code' => 1, 'msg' => '请选择要删除的项']);
        }
        $hasChild = NavMenu::where('parent_id', $id)->where('delete_at', 0)->count();
        if ($hasChild) {
            return json(['code' => 1, 'msg' => '请先删除该菜单下的子项']);
        }
        NavMenu::destroy($id);
        return json(['code' => 0, 'msg' => '已删除']);
    }

    /**
     * 切换显示/隐藏.
     */
    public function status($id = 0, $status = 1)
    {
        $id = $id ?: (int) Request::post('id', 0);
        if (! $id) {
            return json(['code' => 1, 'msg' => '参数错误']);
        }
        NavMenu::find($id)->save(['status' => (int) $status]);
        return json(['code' => 0, 'msg' => '已更新']);
    }
}