<?php

namespace app\admin\model;

use ba\Exception;
use think\facade\Db;
use think\model;

/**
 * 菜单模型
 */
class SysMenu extends model
{
    // 菜单类型常量
    const MENU_TYPE_CATALOG = 0; // 目录
    const MENU_TYPE_MENU = 1;    // 菜单
    const MENU_TYPE_BUTTON = 2;  // 按钮

    public static function getMenuList($menu):array
    {
        $one_menu = [];
        $t_menu = [];
        $p_list = [];
        foreach ($menu as $k => $v) {
            if(in_array($v['type'], [0, 1])) {
                if($v['parent_id'] == 0) {
                    $one_menu[] = $v;
                }else {
                    $t_menu[] = $v;
                }
            }
            // 权限处理
            if($v['perms'] ) {
                if(strpos($v['perms'], ',') !== false) {
                    foreach (explode(',', $v['perms']) as $item) {
                        $p_list[] = $item;
                    }
                }else {
                    $p_list[] = $v['perms'];
                }
            }
        }
        foreach ($one_menu as $k => &$one_value) {
            foreach ($t_menu as $two_k => $two_value) {
                if($two_value['parent_id'] == $one_value['menu_id']) {
                    $one_value['list'][] = convertToCamelCase($two_value);
                }
            }
        }
        $return['menuList'] = convertToCamelCase($one_menu);
        $return['permissions'] = $p_list;
        return $return;
    }


    public static function verifyForm($menu)
    {
        // 验证菜单名称
        if (empty($menu['name'])) {
            throw new Exception("菜单名称不能为空");
        }

        // 验证上级菜单
        if (!isset($menu['parentId'])) {
            throw new Exception("上级菜单不能为空");
        }

        // 菜单类型为菜单时，验证 URL
        if ($menu['type'] == self::MENU_TYPE_MENU) {
            if (empty($menu['url'])) {
                throw new Exception("菜单URL不能为空");
            }
        }

        // 获取上级菜单类型
        $parentType = self::MENU_TYPE_CATALOG;
        if ($menu['parentId'] != 0) {
            $parentMenu = Db::name('sys_menu')->where(['menu_id' => $menu['parentId']])->find();
            if (!$parentMenu) {
                throw new Exception("上级菜单不存在");
            }
            $parentType = $parentMenu['type'];
        }

        // 目录、菜单类型验证
        if ($menu['type'] == self::MENU_TYPE_CATALOG || $menu['type'] == self::MENU_TYPE_MENU) {
            if ($parentType != self::MENU_TYPE_CATALOG) {
                throw new Exception("上级菜单只能为目录类型");
            }
            return;
        }

        // 按钮类型验证
        if ($menu['type'] == self::MENU_TYPE_BUTTON) {
            if ($parentType != self::MENU_TYPE_MENU) {
                throw new Exception("上级菜单只能为菜单类型");
            }
            return;
        }
    }

}