<?php

namespace app\admin\util;

use think\Exception;
use think\facade\Config;
use think\facade\Cache;
use think\facade\Db;
use think\facade\Session;
use think\facade\Cookie;


class MenuService {
    /**
     * 获取菜单列表
     * @param string $tableName
     * @param string $order
     * @return array
     */
    public function getMenuList(String $tableName, String $order){
        $menulist = Db::name($tableName)->field("*")->withAttr('langs', function ($langs) {
            if (empty($langs)) {
                return [];
            }
            return json_decode($langs, true);
        })->order($order)->select()->toArray();
        $list = _generateListTree($menulist, 0, ['id', 'father_id']);
        return $list;
    }

    /**
     * 更新菜单显示状态
     * @param string $tableName
     * @param int $id
     * @param string $showMenu
     * @return bool
     */
    public function upShowMenu(String $tableName, int $id, String $showMenu):bool {
        $data = [];
        $info = Db::name($tableName)->field('id')->where('id', $id)->find();
        if (empty($info)) {
            throw new Exception('信息不存在！', 400);
        }
        if ($showMenu == '1') {
            $data['show_menu'] = 1;
        } else {
            $data['show_menu'] = 0;
        }
        $backval = Db::name($tableName)->where('id', $id)->save($data);
        if ($backval === FALSE) {
            throw new Exception('更新失败！', 400);
        } else {
            $this->delCache($tableName);
            return true;
        }
        return false;
    }
    
    public function getMenuDetail(String $tableName, int $id){
        return Db::name($tableName)->field('*')->withAttr('langs', function ($langs) {
            if (empty($langs)) {
                return [];
            }
            return json_decode($langs, true);
        })->where('id', $id)->find();
    }

    /**
     * 检查菜单数据
     * @param array $data
     */
    public function validateData(array $data){
        $validate = new \app\admin\validate\SupplierMenu();
        $result = $validate->check($data);
        if (!$result) {
            throw new Exception($validate->getError(), 400);
        }
    }

    /**
     * 更新菜单
     * @param string $tableName
     * @param int $id
     * @param array $data
     * @return bool
     */
    public function upMenu(String $tableName, int $id, array $data) {
        $this->validateData($data);
        //更新数据
        //////保存////////////
        Db::name($tableName)->where('id', $id)->withoutField('id')->save($data);
        ////////////////////////
        $this->delCache($tableName);
    }

    /**
     * 添加菜单
     * @param string $tableName
     * @param int $id
     * @param array $data
     * @return bool
     */
    public function addMenu(String $tableName, int $id, array $data):bool {
        $this->validateData($data);
        $data['add_time'] = time();
        $new_id = Db::name($tableName)->insertGetId($data);
        if ($new_id) {
            Db::name($tableName)->where('id', $new_id)->save(['order_id' => $new_id]);
            ///////执行成功，提交事务///////
            $this->delCache($tableName);
            return true;
        } else {
            throw new Exception('菜单添加失败', 400);
        }
    }

    /**
     * 清除缓存
     * @return void
     */
    private function delCache($tableName) {
        Cache::tag($tableName)->clear();
    }

}