<?php
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namespace app\shop\service;
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use think\Config;
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/**
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* 商家后台菜单业务
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*/
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class MenusService
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{
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static public $instance;
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private $auth;
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/**
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* 公有化获取实例方法
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*/
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public static function getInstance()
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{
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if (!(self::$instance instanceof MenusService)) {
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self::$instance = new self;
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}
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return self::$instance;
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}
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/**
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* 私有化构造方法
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*/
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private function __construct()
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{
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$this->auth = AuthService::getInstance();
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}
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/**
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* 私有化克隆方法
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*/
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private function __clone()
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{
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}
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/**
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* 后台菜单配置
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*/
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public function getMenus($routeUri, $group)
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{
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// 菜单列表数据
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$menus = Config::get('menus');
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$this->first($menus, $routeUri, $group);
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return $menus;
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}
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/**
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* 一级菜单
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*/
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private function first(&$menus, $routeUri, $group)
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{
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foreach ($menus as $key => &$first) :
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// 一级菜单索引url
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$indexData = $this->getMenusIndexUrls($first, 1);
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// 权限验证
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$first['index'] = $this->getAuthUrl($indexData);
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if ($first['index'] === false) {
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unset($menus[$key]);
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continue;
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}
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// 菜单聚焦
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$first['active'] = $key === $group;
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// 遍历：二级菜单
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if (isset($first['submenu'])) {
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$this->second($first['submenu'], $routeUri);
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}
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endforeach;
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}
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/**
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* 二级菜单
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*/
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public function second(&$menus, $routeUri)
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{
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foreach ($menus as $key => &$second) :
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// 二级菜单索引url
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$indexData = $this->getMenusIndexUrls($second, 2);
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// 权限验证
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$second['index'] = $this->getAuthUrl($indexData);
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if ($second['index'] === false) {
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unset($menus[$key]);
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continue;
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}
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// 二级菜单所有uri
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$secondUris = [];
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// 遍历：三级菜单
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if (isset($second['submenu'])) {
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$this->third($second['submenu'], $routeUri, $secondUris);
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} else {
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if (isset($second['uris']))
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$secondUris = array_merge($secondUris, $second['uris']);
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else
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$secondUris[] = $second['index'];
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}
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// 二级菜单：active
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!isset($second['active']) && $second['active'] = in_array($routeUri, $secondUris);
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endforeach;
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// 删除空数组
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$menus = array_filter($menus);
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}
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/**
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* 三级菜单
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*/
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private function third(&$menus, $routeUri, &$secondUris)
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{
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foreach ($menus as $key => &$third):
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// 三级菜单索引url
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$indexData = $this->getMenusIndexUrls($third, 3);
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// 权限验证
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$third['index'] = $this->getAuthUrl($indexData);
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if ($third['index'] === false) {
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unset($menus[$key]);
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continue;
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}
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// 三级菜单所有uri
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$thirdUris = [];
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if (isset($third['uris'])) {
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$secondUris = array_merge($secondUris, $third['uris']);
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$thirdUris = array_merge($thirdUris, $third['uris']);
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} else {
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$secondUris[] = $third['index'];
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$thirdUris[] = $third['index'];
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}
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$third['active'] = in_array($routeUri, $thirdUris);
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endforeach;
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}
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/**
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* 获取指定菜单下的所有索引url
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*/
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private function getMenusIndexUrls(&$menus, $level = 1)
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{
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// 判断是否存在url
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if (!isset($menus['index']) && !isset($menus['submenu'])) {
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return null;
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}
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$data = [];
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if (isset($menus['index']) && !empty($menus['index'])) {
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$data[] = $menus['index'];
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}
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if (isset($menus['submenu']) && !empty($menus['submenu'])) {
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foreach ($menus['submenu'] as $submenu) {
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$submenuIndex = $this->getMenusIndexUrls($submenu, ++$level);
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!is_null($submenuIndex) && $data = array_merge($data, $submenuIndex);
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}
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}
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return array_unique($data);
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}
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/**
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* 取出通过权限验证urk作为index
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*/
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private function getAuthUrl($urls)
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{
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// 取出通过权限验证urk作为index
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foreach ($urls as $url) {
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if ($this->auth->checkPrivilege($url)) return $url;
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}
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return false;
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}
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}
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