<?php

namespace app\common\controller;

use app\admin\library\Auth;
use think\Config;
use think\Controller;
use think\Hook;
use think\Lang;
use think\Loader;
use think\Model;
use think\Session;
use fast\Tree;
use think\Validate;

/**
 * 后台控制器基类
 */
class Backend extends Controller
{

 /**
 * 无需登录的方法,同时也就不需要鉴权了
 * @var array
 */
 protected $noNeedLogin = [];

 /**
 * 无需鉴权的方法,但需要登录
 * @var array
 */
 protected $noNeedRight = [];

 /**
 * 布局模板
 * @var string
 */
 protected $layout = 'default';

 /**
 * 权限控制类
 * @var Auth
 */
 protected $auth = null;

 /**
 * 模型对象
 * @var \think\Model
 */
 protected $model = null;

 /**
 * 快速搜索时执行查找的字段
 */
 protected $searchFields = 'id';

 /**
 * 是否是关联查询
 */
 protected $relationSearch = false;

 /**
 * 是否开启数据限制
 * 支持auth/personal
 * 表示按权限判断/仅限个人
 * 默认为禁用,若启用请务必保证表中存在admin_id字段
 */
 protected $dataLimit = false;

 /**
 * 数据限制字段
 */
 protected $dataLimitField = 'admin_id';

 /**
 * 数据限制开启时自动填充限制字段值
 */
 protected $dataLimitFieldAutoFill = true;

 /**
 * 是否开启Validate验证
 */
 protected $modelValidate = false;

 /**
 * 是否开启模型场景验证
 */
 protected $modelSceneValidate = false;

 /**
 * Multi方法可批量修改的字段
 */
 protected $multiFields = 'status';

 /**
 * Selectpage可显示的字段
 */
 protected $selectpageFields = '*';

 /**
 * 前台提交过来,需要排除的字段数据
 */
 protected $excludeFields = "";

 /**
 * 导入文件首行类型
 * 支持comment/name
 * 表示注释或字段名
 */
 protected $importHeadType = 'comment';

 /**
 * 引入后台控制器的traits
 */
 use \app\admin\library\traits\Backend;

 public function _initialize()
 {
 $modulename = $this->request->module();
 $controllername = Loader::parseName($this->request->controller());
 $actionname = strtolower($this->request->action());

 $path = str_replace('.', '/', $controllername) . '/' . $actionname;

 // 定义是否Addtabs请求
 !defined('IS_ADDTABS') && define('IS_ADDTABS', input("addtabs") ? true : false);

 // 定义是否Dialog请求
 !defined('IS_DIALOG') && define('IS_DIALOG', input("dialog") ? true : false);

 // 定义是否AJAX请求
 !defined('IS_AJAX') && define('IS_AJAX', $this->request->isAjax());

 // 检测IP是否允许
 check_ip_allowed();

 $this->auth = Auth::instance();

 // 设置当前请求的URI
 $this->auth->setRequestUri($path);
 // 检测是否需要验证登录
 if (!$this->auth->match($this->noNeedLogin)) {
 //检测是否登录
 if (!$this->auth->isLogin()) {
 Hook::listen('admin_nologin', $this);
 $url = Session::get('referer');
 $url = $url ? $url : $this->request->url();
 if (in_array($this->request->pathinfo(), ['/', 'index/index'])) {
 $this->redirect('index/login', [], 302, ['referer' => $url]);
 exit;
 }
 $this->error(__('Please login first'), url('index/login', ['url' => $url]));
 }
 // 判断是否需要验证权限
 if (!$this->auth->match($this->noNeedRight)) {
 // 判断控制器和方法是否有对应权限
 if (!$this->auth->check($path)) {
 Hook::listen('admin_nopermission', $this);
 $this->error(__('You have no permission'), '');
 }
 }
 }

 // 非选项卡时重定向
 if (!$this->request->isPost() && !IS_AJAX && !IS_ADDTABS && !IS_DIALOG && input("ref") == 'addtabs') {
 $url = preg_replace_callback("/([\?|&]+)ref=addtabs(&?)/i", function ($matches) {
 return $matches[2] == '&' ? $matches[1] : '';
 }, $this->request->url());
 if (Config::get('url_domain_deploy')) {
 if (stripos($url, $this->request->server('SCRIPT_NAME')) === 0) {
 $url = substr($url, strlen($this->request->server('SCRIPT_NAME')));
 }
 $url = url($url, '', false);
 }
 $this->redirect('index/index', [], 302, ['referer' => $url]);
 exit;
 }

 // 设置面包屑导航数据
 $breadcrumb = [];
 if (!IS_DIALOG && !config('fastadmin.multiplenav') && config('fastadmin.breadcrumb')) {
 $breadcrumb = $this->auth->getBreadCrumb($path);
 array_pop($breadcrumb);
 }
 $this->view->breadcrumb = $breadcrumb;

 // 如果有使用模板布局
 if ($this->layout) {
 $this->view->engine->layout('layout/' . $this->layout);
 }

 // 语言检测
 $lang = $this->request->langset();
 $lang = preg_match("/^([a-zA-Z\-_]{2,10})\$/i", $lang) ? $lang : 'zh-cn';

 $site = Config::get("site");

 $upload = \app\common\model\Config::upload();

 // 上传信息配置后
 Hook::listen("upload_config_init", $upload);

 // 配置信息
 $config = [
 'site' => array_intersect_key($site, array_flip(['name', 'indexurl', 'cdnurl', 'version', 'timezone', 'languages'])),
 'upload' => $upload,
 'modulename' => $modulename,
 'controllername' => $controllername,
 'actionname' => $actionname,
 'jsname' => 'backend/' . str_replace('.', '/', $controllername),
 'moduleurl' => rtrim(url("/{$modulename}", '', false), '/'),
 'language' => $lang,
 'referer' => Session::get("referer")
 ];
 $config = array_merge($config, Config::get("view_replace_str"));

 Config::set('upload', array_merge(Config::get('upload'), $upload));

 // 配置信息后
 Hook::listen("config_init", $config);
 //加载当前控制器语言包
 $this->loadlang($controllername);
 //渲染站点配置
 $this->assign('site', $site);
 //渲染配置信息
 $this->assign('config', $config);
 //渲染权限对象
 $this->assign('auth', $this->auth);
 //渲染管理员对象
 $this->assign('admin', Session::get('admin'));
 }

 /**
 * 加载语言文件
 * @param string $name
 */
 protected function loadlang($name)
 {
 $name = Loader::parseName($name);
 $name = preg_match("/^([a-zA-Z0-9_\.\/]+)\$/i", $name) ? $name : 'index';
 $lang = $this->request->langset();
 $lang = preg_match("/^([a-zA-Z\-_]{2,10})\$/i", $lang) ? $lang : 'zh-cn';
 Lang::load(APP_PATH . $this->request->module() . '/lang/' . $lang . '/' . str_replace('.', '/', $name) . '.php');
 }

 /**
 * 渲染配置信息
 * @param mixed $name 键名或数组
 * @param mixed $value 值
 */
 protected function assignconfig($name, $value = '')
 {
 $this->view->config = array_merge($this->view->config ? $this->view->config : [], is_array($name) ? $name : [$name => $value]);
 }

 /**
 * 生成查询所需要的条件,排序方式
 * @param mixed $searchfields 快速查询的字段
 * @param boolean $relationSearch 是否关联查询
 * @return array
 */
 protected function buildparams($searchfields = null, $relationSearch = null)
 {
 $searchfields = is_null($searchfields) ? $this->searchFields : $searchfields;
 $relationSearch = is_null($relationSearch) ? $this->relationSearch : $relationSearch;
 $search = $this->request->get("search", '');
 $filter = $this->request->get("filter", '');
 $op = $this->request->get("op", '', 'trim');
 $sort = $this->request->get("sort", !empty($this->model) && $this->model->getPk() ? $this->model->getPk() : 'id');
 $order = $this->request->get("order", "DESC");
 $offset = $this->request->get("offset/d", 0);
 $limit = $this->request->get("limit/d", 999999);
 //新增自动计算页码
 $page = $limit ? intval($offset / $limit) + 1 : 1;
 if ($this->request->has("page")) {
 $page = $this->request->get("page/d", 1);
 }
 $this->request->get([config('paginate.var_page') => $page]);
 $filter = (array)json_decode($filter, true);
 $op = (array)json_decode($op, true);
 $filter = $filter ? $filter : [];
 $where = [];
 $alias = [];
 $bind = [];
 $name = '';
 $aliasName = '';
 if (!empty($this->model) && $this->relationSearch) {
 $name = $this->model->getTable();
 $alias[$name] = Loader::parseName(basename(str_replace('\\', '/', get_class($this->model))));
 $aliasName = $alias[$name] . '.';
 }
 $sortArr = explode(',', $sort);
 foreach ($sortArr as $index => & $item) {
 $item = stripos($item, ".") === false ? $aliasName . trim($item) : $item;
 }
 unset($item);
 $sort = implode(',', $sortArr);
 $adminIds = $this->getDataLimitAdminIds();
 if (is_array($adminIds)) {
 $where[] = [$aliasName . $this->dataLimitField, 'in', $adminIds];
 }
 if ($search) {
 $searcharr = is_array($searchfields) ? $searchfields : explode(',', $searchfields);
 foreach ($searcharr as $k => &$v) {
 $v = stripos($v, ".") === false ? $aliasName . $v : $v;
 }
 unset($v);
 $where[] = [implode("|", $searcharr), "LIKE", "%{$search}%"];
 }
 $index = 0;
 foreach ($filter as $k => $v) {
 if (!preg_match('/^[a-zA-Z0-9_\-\.]+$/', $k)) {
 continue;
 }
 $sym = isset($op[$k]) ? $op[$k] : '=';
 if (stripos($k, ".") === false) {
 $k = $aliasName . $k;
 }
 $v = !is_array($v) ? trim($v) : $v;
 $sym = strtoupper(isset($op[$k]) ? $op[$k] : $sym);
 //null和空字符串特殊处理
 if (!is_array($v)) {
 if (in_array(strtoupper($v), ['NULL', 'NOT NULL'])) {
 $sym = strtoupper($v);
 }
 if (in_array($v, ['""', "''"])) {
 $v = '';
 $sym = '=';
 }
 }

 switch ($sym) {
 case '=':
 case '<>':
 $where[] = [$k, $sym, (string)$v];
 break;
 case 'LIKE':
 case 'NOT LIKE':
 case 'LIKE %...%':
 case 'NOT LIKE %...%':
 $where[] = [$k, trim(str_replace('%...%', '', $sym)), "%{$v}%"];
 break;
 case '>':
 case '>=':
 case '<':
 case '<=':
 $where[] = [$k, $sym, intval($v)];
 break;
 case 'FINDIN':
 case 'FINDINSET':
 case 'FIND_IN_SET':
 $v = is_array($v) ? $v : explode(',', str_replace(' ', ',', $v));
 $findArr = array_values($v);
 foreach ($findArr as $idx => $item) {
 $bindName = "item_" . $index . "_" . $idx;
 $bind[$bindName] = $item;
 $where[] = "FIND_IN_SET(:{$bindName}, `" . str_replace('.', '`.`', $k) . "`)";
 }
 break;
 case 'IN':
 case 'IN(...)':
 case 'NOT IN':
 case 'NOT IN(...)':
 $where[] = [$k, str_replace('(...)', '', $sym), is_array($v) ? $v : explode(',', $v)];
 break;
 case 'BETWEEN':
 case 'NOT BETWEEN':
 $arr = array_slice(explode(',', $v), 0, 2);
 if (stripos($v, ',') === false || !array_filter($arr, function ($v) {
 return $v != '' && $v !== false && $v !== null;
 })) {
 continue 2;
 }
 //当出现一边为空时改变操作符
 if ($arr[0] === '') {
 $sym = $sym == 'BETWEEN' ? '<=' : '>';
 $arr = $arr[1];
 } elseif ($arr[1] === '') {
 $sym = $sym == 'BETWEEN' ? '>=' : '<';
 $arr = $arr[0];
 }
 $where[] = [$k, $sym, $arr];
 break;
 case 'RANGE':
 case 'NOT RANGE':
 $v = str_replace(' - ', ',', $v);
 $arr = array_slice(explode(',', $v), 0, 2);
 if (stripos($v, ',') === false || !array_filter($arr)) {
 continue 2;
 }
 //当出现一边为空时改变操作符
 if ($arr[0] === '') {
 $sym = $sym == 'RANGE' ? '<=' : '>';
 $arr = $arr[1];
 } elseif ($arr[1] === '') {
 $sym = $sym == 'RANGE' ? '>=' : '<';
 $arr = $arr[0];
 }
 $tableArr = explode('.', $k);
 if (count($tableArr) > 1 && $tableArr[0] != $name && !in_array($tableArr[0], $alias) && !empty($this->model)) {
 //修复关联模型下时间无法搜索的BUG
 $relation = Loader::parseName($tableArr[0], 1, false);
 $alias[$this->model->$relation()->getTable()] = $tableArr[0];
 }
 $where[] = [$k, str_replace('RANGE', 'BETWEEN', $sym) . ' TIME', $arr];
 break;
 case 'NULL':
 case 'IS NULL':
 case 'NOT NULL':
 case 'IS NOT NULL':
 $where[] = [$k, strtolower(str_replace('IS ', '', $sym))];
 break;
 default:
 break;
 }
 $index++;
 }
 if (!empty($this->model)) {
 $this->model->alias($alias);
 }
 $model = $this->model;
 $where = function ($query) use ($where, $alias, $bind, &$model) {
 if (!empty($model)) {
 $model->alias($alias);
 $model->bind($bind);
 }
 foreach ($where as $k => $v) {
 if (is_array($v)) {
 call_user_func_array([$query, 'where'], $v);
 } else {
 $query->where($v);
 }
 }
 };
 return [$where, $sort, $order, $offset, $limit, $page, $alias, $bind];
 }

 /**
 * 获取数据限制的管理员ID
 * 禁用数据限制时返回的是null
 * @return mixed
 */
 protected function getDataLimitAdminIds()
 {
 if (!$this->dataLimit) {
 return null;
 }
 if ($this->auth->isSuperAdmin()) {
 return null;
 }
 $adminIds = [];
 if (in_array($this->dataLimit, ['auth', 'personal'])) {
 $adminIds = $this->dataLimit == 'auth' ? $this->auth->getChildrenAdminIds(true) : [$this->auth->id];
 }
 return $adminIds;
 }

 /**
 * Selectpage的实现方法
 *
 * 当前方法只是一个比较通用的搜索匹配,请按需重载此方法来编写自己的搜索逻辑,$where按自己的需求写即可
 * 这里示例了所有的参数,所以比较复杂,实现上自己实现只需简单的几行即可
 *
 */
 protected function selectpage()
 {
 //设置过滤方法
 $this->request->filter(['trim', 'strip_tags', 'htmlspecialchars']);

 //搜索关键词,客户端输入以空格分开,这里接收为数组
 $word = (array)$this->request->request("q_word/a");
 //当前页
 $page = $this->request->request("pageNumber");
 //分页大小
 $pagesize = $this->request->request("pageSize");
 //搜索条件
 $andor = $this->request->request("andOr", "and", "strtoupper");
 //排序方式
 $orderby = (array)$this->request->request("orderBy/a");
 //显示的字段
 $field = $this->request->request("showField");
 //主键
 $primarykey = $this->request->request("keyField");
 //主键值
 $primaryvalue = $this->request->request("keyValue");
 //搜索字段
 $searchfield = (array)$this->request->request("searchField/a");
 //自定义搜索条件
 $custom = (array)$this->request->request("custom/a");
 //是否返回树形结构
 $istree = $this->request->request("isTree", 0);
 $ishtml = $this->request->request("isHtml", 0);
 if ($istree) {
 $word = [];
 $pagesize = 999999;
 }
 $order = [];
 foreach ($orderby as $k => $v) {
 $order[$v[0]] = $v[1];
 }
 $field = $field ? $field : 'name';

 //如果有primaryvalue,说明当前是初始化传值
 if ($primaryvalue !== null) {
 $where = [$primarykey => ['in', $primaryvalue]];
 $pagesize = 999999;
 } else {
 $where = function ($query) use ($word, $andor, $field, $searchfield, $custom) {
 $logic = $andor == 'AND' ? '&' : '|';
 $searchfield = is_array($searchfield) ? implode($logic, $searchfield) : $searchfield;
 $searchfield = str_replace(',', $logic, $searchfield);
 $word = array_filter(array_unique($word));
 if (count($word) == 1) {
 $query->where($searchfield, "like", "%" . reset($word) . "%");
 } else {
 $query->where(function ($query) use ($word, $searchfield) {
 foreach ($word as $index => $item) {
 $query->whereOr(function ($query) use ($item, $searchfield) {
 $query->where($searchfield, "like", "%{$item}%");
 });
 }
 });
 }
 if ($custom && is_array($custom)) {
 foreach ($custom as $k => $v) {
 if (is_array($v) && 2 == count($v)) {
 $query->where($k, trim($v[0]), $v[1]);
 } else {
 $query->where($k, '=', $v);
 }
 }
 }
 };
 }
 $adminIds = $this->getDataLimitAdminIds();
 if (is_array($adminIds)) {
 $this->model->where($this->dataLimitField, 'in', $adminIds);
 }
 $list = [];
 $total = $this->model->where($where)->count();
 if ($total > 0) {
 if (is_array($adminIds)) {
 $this->model->where($this->dataLimitField, 'in', $adminIds);
 }

 $fields = is_array($this->selectpageFields) ? $this->selectpageFields : ($this->selectpageFields && $this->selectpageFields != '*' ? explode(',', $this->selectpageFields) : []);

 //如果有primaryvalue,说明当前是初始化传值,按照选择顺序排序
 if ($primaryvalue !== null && preg_match("/^[a-z0-9_\-]+$/i", $primarykey)) {
 $primaryvalue = array_unique(is_array($primaryvalue) ? $primaryvalue : explode(',', $primaryvalue));
 //修复自定义data-primary-key为字符串内容时,给排序字段添加上引号
 $primaryvalue = array_map(function ($value) {
 return '\'' . $value . '\'';
 }, $primaryvalue);

 $primaryvalue = implode(',', $primaryvalue);

 $this->model->orderRaw("FIELD(`{$primarykey}`, {$primaryvalue})");
 } else {
 $this->model->order($order);
 }

 $datalist = $this->model->where($where)
 ->page($page, $pagesize)
 ->select();

 foreach ($datalist as $index => $item) {
 unset($item['password'], $item['salt']);
 if ($this->selectpageFields == '*') {
 $result = [
 $primarykey => isset($item[$primarykey]) ? $item[$primarykey] : '',
 $field => isset($item[$field]) ? $item[$field] : '',
 ];
 } else {
 $result = array_intersect_key(($item instanceof Model ? $item->toArray() : (array)$item), array_flip($fields));
 }
 $result['pid'] = isset($item['pid']) ? $item['pid'] : (isset($item['parent_id']) ? $item['parent_id'] : 0);
 $list[] = $result;
 }
 if ($istree && !$primaryvalue) {
 $tree = Tree::instance();
 $tree->init(collection($list)->toArray(), 'pid');
 $list = $tree->getTreeList($tree->getTreeArray(0), $field);
 if (!$ishtml) {
 foreach ($list as &$item) {
 $item = str_replace('&nbsp;', ' ', $item);
 }
 unset($item);
 }
 }
 }
 //这里一定要返回有list这个字段,total是可选的,如果total<=list的数量,则会隐藏分页按钮
 return json(['list' => $list, 'total' => $total]);
 }

 /**
 * 刷新Token
 */
 protected function token()
 {
 $token = $this->request->param('__token__');

 //验证Token
 if (!Validate::make()->check(['__token__' => $token], ['__token__' => 'require|token'])) {
 $this->error(__('Token verification error'), '', ['__token__' => $this->request->token()]);
 }

 //刷新Token
 $this->request->token();
 }
}