<?php

namespace app\admin\controller;

use app\common\controller\Backend;
use app\common\exception\UploadException;
use app\common\library\Upload;
use fast\Random;
use think\addons\Service;
use think\Cache;
use think\Config;
use think\Db;
use think\Lang;
use think\Response;
use think\Validate;

/**
 * Ajax异步请求接口
 * @internal
 */
class Ajax extends Backend
{

 protected $noNeedLogin = ['lang'];
 protected $noNeedRight = ['*'];
 protected $layout = '';

 public function _initialize()
 {
 parent::_initialize();

 //设置过滤方法
 $this->request->filter(['trim', 'strip_tags', 'htmlspecialchars']);
 }

 /**
 * 加载语言包
 */
 public function lang()
 {

 $header = ['Content-Type' => 'application/javascript'];
 if (!config('app_debug')) {
 $offset = 30 * 60 * 60 * 24; // 缓存一个月
 $header['Cache-Control'] = 'public';
 $header['Pragma'] = 'cache';
 $header['Expires'] = gmdate("D, d M Y H:i:s", time() + $offset) . " GMT";
 }

 $controllername = input("controllername");
 //默认只加载了控制器对应的语言名,你还根据控制器名来加载额外的语言包
 $this->loadlang($controllername);
 return jsonp(Lang::get(), 200, $header, ['json_encode_param' => JSON_FORCE_OBJECT | JSON_UNESCAPED_UNICODE]);
 }

 /**
 * 上传文件
 */
 public function upload()
 {
 Config::set('default_return_type', 'json');
 //必须设定cdnurl为空,否则cdnurl函数计算错误
 Config::set('upload.cdnurl', '');
 $chunkid = $this->request->post("chunkid");
 if ($chunkid) {
 if (!Config::get('upload.chunking')) {
 $this->error(__('Chunk file disabled'));
 }
 $action = $this->request->post("action");
 $chunkindex = $this->request->post("chunkindex/d");
 $chunkcount = $this->request->post("chunkcount/d");
 $filename = $this->request->post("filename");
 $method = $this->request->method(true);
 if ($action == 'merge') {
 $attachment = null;
 //合并分片文件
 try {
 $upload = new Upload();
 $attachment = $upload->merge($chunkid, $chunkcount, $filename);
 } catch (UploadException $e) {
 $this->error($e->getMessage());
 }
 $this->success(__('Uploaded successful'), '', ['url' => $attachment->url, 'fullurl' => cdnurl($attachment->url, true)]);
 } elseif ($method == 'clean') {
 //删除冗余的分片文件
 try {
 $upload = new Upload();
 $upload->clean($chunkid);
 } catch (UploadException $e) {
 $this->error($e->getMessage());
 }
 $this->success();
 } else {
 //上传分片文件
 //默认普通上传文件
 $file = $this->request->file('file');
 try {
 $upload = new Upload($file);
 $upload->chunk($chunkid, $chunkindex, $chunkcount);
 } catch (UploadException $e) {
 $this->error($e->getMessage());
 }
 $this->success();
 }
 } else {
 $attachment = null;
 //默认普通上传文件
 $file = $this->request->file('file');
 try {
 $upload = new Upload($file);
 $attachment = $upload->upload();
 } catch (UploadException $e) {
 $this->error($e->getMessage());
 }

 $this->success(__('Uploaded successful'), '', ['url' => $attachment->url, 'fullurl' => cdnurl($attachment->url, true)]);
 }
 }

 /**
 * 通用排序
 */
 public function weigh()
 {
 //排序的数组
 $ids = $this->request->post("ids");
 //拖动的记录ID
 $changeid = $this->request->post("changeid");
 //操作字段
 $field = $this->request->post("field");
 //操作的数据表
 $table = $this->request->post("table");
 if (!Validate::is($table, "alphaDash")) {
 $this->error();
 }
 //主键
 $pk = $this->request->post("pk");
 //排序的方式
 $orderway = strtolower($this->request->post("orderway", ""));
 $orderway = $orderway == 'asc' ? 'ASC' : 'DESC';
 $sour = $weighdata = [];
 $ids = explode(',', $ids);
 $prikey = $pk && preg_match("/^[a-z0-9\-_]+$/i", $pk) ? $pk : (Db::name($table)->getPk() ?: 'id');
 $pid = $this->request->post("pid", "");
 //限制更新的字段
 $field = in_array($field, ['weigh']) ? $field : 'weigh';

 // 如果设定了pid的值,此时只匹配满足条件的ID,其它忽略
 if ($pid !== '') {
 $hasids = [];
 $list = Db::name($table)->where($prikey, 'in', $ids)->where('pid', 'in', $pid)->field("{$prikey},pid")->select();
 foreach ($list as $k => $v) {
 $hasids[] = $v[$prikey];
 }
 $ids = array_values(array_intersect($ids, $hasids));
 }

 $list = Db::name($table)->field("$prikey,$field")->where($prikey, 'in', $ids)->order($field, $orderway)->select();
 foreach ($list as $k => $v) {
 $sour[] = $v[$prikey];
 $weighdata[$v[$prikey]] = $v[$field];
 }
 $position = array_search($changeid, $ids);
 $desc_id = isset($sour[$position]) ? $sour[$position] : end($sour); //移动到目标的ID值,取出所处改变前位置的值
 $sour_id = $changeid;
 $weighids = array();
 $temp = array_values(array_diff_assoc($ids, $sour));
 foreach ($temp as $m => $n) {
 if ($n == $sour_id) {
 $offset = $desc_id;
 } else {
 if ($sour_id == $temp[0]) {
 $offset = isset($temp[$m + 1]) ? $temp[$m + 1] : $sour_id;
 } else {
 $offset = isset($temp[$m - 1]) ? $temp[$m - 1] : $sour_id;
 }
 }
 if (!isset($weighdata[$offset])) {
 continue;
 }
 $weighids[$n] = $weighdata[$offset];
 Db::name($table)->where($prikey, $n)->update([$field => $weighdata[$offset]]);
 }
 $this->success();
 }

 /**
 * 清空系统缓存
 */
 public function wipecache()
 {
 try {
 $type = $this->request->request("type");
 switch ($type) {
 case 'all':
 // no break
 case 'content':
 //内容缓存
 rmdirs(CACHE_PATH, false);
 Cache::clear();
 if ($type == 'content') {
 break;
 }
 case 'template':
 // 模板缓存
 rmdirs(TEMP_PATH, false);
 if ($type == 'template') {
 break;
 }
 case 'addons':
 // 插件缓存
 Service::refresh();
 if ($type == 'addons') {
 break;
 }
 case 'browser':
 // 浏览器缓存
 // 只有生产环境下才修改
 if (!config('app_debug')) {
 $version = config('site.version');
 $newversion = preg_replace_callback("/(.*)\.([0-9]+)\$/", function ($match) {
 return $match[1] . '.' . ($match[2] + 1);
 }, $version);
 if ($newversion && $newversion != $version) {
 Db::startTrans();
 try {
 \app\common\model\Config::where('name', 'version')->update(['value' => $newversion]);
 \app\common\model\Config::refreshFile();
 Db::commit();
 } catch (\Exception $e) {
 Db::rollback();
 exception($e->getMessage());
 }
 }
 }
 if ($type == 'browser') {
 break;
 }
 }
 } catch (\Exception $e) {
 $this->error($e->getMessage());
 }

 \think\Hook::listen("wipecache_after");
 $this->success();
 }

 /**
 * 读取分类数据,联动列表
 */
 public function category()
 {
 $type = $this->request->get('type', '');
 $pid = $this->request->get('pid', '');
 $where = ['status' => 'normal'];
 $categorylist = null;
 if ($pid || $pid === '0') {
 $where['pid'] = $pid;
 }
 if ($type) {
 $where['type'] = $type;
 }

 $categorylist = Db::name('category')->where($where)->field('id as value,name')->order('weigh desc,id desc')->select();

 $this->success('', '', $categorylist);
 }

 /**
 * 读取省市区数据,联动列表
 */
 public function area()
 {
 $params = $this->request->get("row/a");
 if (!empty($params)) {
 $province = isset($params['province']) ? $params['province'] : null;
 $city = isset($params['city']) ? $params['city'] : null;
 } else {
 $province = $this->request->get('province');
 $city = $this->request->get('city');
 }
 $where = ['pid' => 0, 'level' => 1];
 $provincelist = null;
 if ($province !== null) {
 $where['pid'] = $province;
 $where['level'] = 2;
 if ($city !== null) {
 $where['pid'] = $city;
 $where['level'] = 3;
 }
 }
 $provincelist = Db::name('area')->where($where)->field('id as value,name')->select();
 $this->success('', '', $provincelist);
 }

 /**
 * 生成后缀图标
 */
 public function icon()
 {
 $suffix = $this->request->request("suffix");
 $suffix = $suffix ? $suffix : "FILE";
 $data = build_suffix_image($suffix);
 $header = ['Content-Type' => 'image/svg+xml'];
 $offset = 30 * 60 * 60 * 24; // 缓存一个月
 $header['Cache-Control'] = 'public';
 $header['Pragma'] = 'cache';
 $header['Expires'] = gmdate("D, d M Y H:i:s", time() + $offset) . " GMT";
 $response = Response::create($data, '', 200, $header);
 return $response;
 }

}