<?php

namespace app\common\library;

use app\common\model\school\classes\VirtualHead;
use app\common\model\school\classes\VirtualUser;

/**
 *  虚拟数据工具类
 */
class Virtual
{

    /** 获得虚拟昵称
     * @return mixed|string
     */
    public function getNickName(){
        $str = config("site.virtual_nickname");
        $arr = explode("##",$str);
        $r = rand(0,sizeof($arr));
        return $arr[$r];
    }

    public function getVirtualUser($num=10,$classes_lib_id = 0,$time=null,$set=false){
        if(!is_numeric($time)) $time =  strtotime($time); //日期字符格式化时间戳

        $users = [];
        if(!$time)$time = time();
        //mysql随机查询$num个数据
        $virtualHead  = VirtualHead::orderRaw("rand()")->limit($num)->select();
        //随机获得$num个虚拟用户昵称和头像
        foreach($virtualHead as $k=>$v) {
            $nickname = $this->getNickName();
            $head = $v->head_image;
            $r = rand(($time - 86400*7),$time);

            $users[] = [
                "nickname"=>$nickname,
                "head_image"=>$head,
                "time"=>$r,
                "jointype" => "1",
                "havetype" => "".($k % 2)
            ];
        }

        if(!$set){
            return $users;
        }else{

            $user_data=[];
            foreach($users as $k=> $user) {
                $r = rand(($time - 86400*7),$time);
                $user_data[] = [
                    "nickname"=>$user["nickname"],
                    "head_image"=>$user["head_image"],
                    "classes_lib_id"=>$classes_lib_id,
                    "time"=>$r,
                    "jointype" => "1",
                    "havetype" => $user["havetype"]
                ];
            }
            (new VirtualUser)->saveAll($user_data);

              \app\common\model\school\classes\ClassesLib::update_classes($classes_lib_id);
            return $user_data;
        }

    }


    public static function getWeekByTime($time){
        $time = $time && !is_numeric($time) ? strtotime($time) : time();

        //得到当前日期所在周几
        $week = date("w",$time);
        $week = $week == 0 ? '7' : $week;

        $sub = 7 -$week;

        $start_time = $time - ($sub*86400);
         date("Y-m-d",$start_time);
         
        return  ;
    }


}