<?php

namespace App\Models\Admin;

use Dcat\Admin\Models\Administrator as DcatAdministrator;

class Administrator extends DcatAdministrator
{
    public function hasPermission(String $slug): bool
    {
        //判断是否是超级管理员
        if ($this->isAdministrator()) {
            return true;
        }

        $userPermissions = $this->getCachePermissions();

        //获取缓存权限
        if (!$userPermissions) {//未获取到则刷新
            $userPermissions = $this->refreshCachePermissions();
        }

        //判断是否有权限
        if (in_array($slug, $userPermissions)) {
            return true;
        }
        return false;
    }

    /**
     * 更新缓存权限:重新获取，并存入缓存
     *
     * @return array|null
     */
    public function refreshCachePermissions(): ?array
    {
        //获取角色权限
        $permissions = [];
        foreach ($this->roles()->get() as $role) {
            if ($role->name !== 'Administrator') {
                foreach ($role->permissions as $permission) {
                    $permissions[] = $permission->slug;
                }
            }
        }

        //缓存权限
        session(['user_permissions' => $permissions]);

        return $permissions;
    }

    /**
     * 获取缓存权限
     *
     * @return array|null
     */
    public function getCachePermissions(): ?array
    {
        return session('user_permissions');
    }
}