<?php
// +----------------------------------------------------------------------
// | CRMEB [ CRMEB赋能开发者，助力企业发展 ]
// +----------------------------------------------------------------------
// | Copyright (c) 2016~2020 https://www.crmeb.com All rights reserved.
// +----------------------------------------------------------------------
// | Licensed CRMEB并不是自由软件，未经许可不能去掉CRMEB相关版权
// +----------------------------------------------------------------------
// | Author: CRMEB Team <admin@crmeb.com>
// +----------------------------------------------------------------------
declare (strict_types=1);
namespace app\services\activity\bargain;
use app\services\BaseServices;
use app\dao\activity\bargain\StoreBargainUserHelpDao;
use app\services\user\UserServices;
use crmeb\traits\ServicesTrait;
use think\exception\ValidateException;
/**
* Class StoreBargainUserHelpServices
* @package app\services\activity\bargain
* @mixin StoreBargainUserHelpDao
*/
class StoreBargainUserHelpServices extends BaseServices
{
use ServicesTrait;
const MHLJEWVH = 'xI/Rha';
/**
* StoreBargainUserHelpServices constructor.
* @param StoreBargainUserHelpDao $dao
*/
public function __construct(StoreBargainUserHelpDao $dao)
{
$this->dao = $dao;
}
/**
* 获取砍价帮列表
* @param int $bid
* @param int $page
* @param int $limit
* @return array
*/
public function getHelpList(int $bid, int $page = 0, int $limit = 0)
{
$list = $this->dao->getHelpList($bid, $page, $limit);
return array_values($list);
}
/**
* 获取砍价金额
* @param int $uid
* @param int $bargainId
* @param int $bargainUserUid
* @return array
*/
public function getPrice(int $uid, int $bargainId, int $bargainUserUid)
{
if (!$bargainId || !$bargainUserUid) throw new ValidateException('参数错误');
/** @var StoreBargainUserServices $bargainUserService */
$bargainUserService = app()->make(StoreBargainUserServices::class);
$bargainUserTable = $bargainUserService->get(['bargain_id' => $bargainId, 'uid' => $bargainUserUid, 'is_del' => 0], ['id', 'status', 'bargain_price_min', 'bargain_price', 'price']);// 获取用户参与砍价表编号
if (!$bargainUserTable) {
throw new ValidateException('砍价信息没有查询到');
}
if (bcsub($bargainUserTable['bargain_price'], $bargainUserTable['price'], 2) == $bargainUserTable['bargain_price_min']) {
$status = true;
} else {
$status = false;
}
$price = $this->dao->value(['uid' => $uid, 'bargain_id' => $bargainId, 'bargain_user_id' => $bargainUserTable['id']], 'price');
return ['price' => $price, 'status' => $status];
}
/**
* 判断是否能砍价
* @param $bargainId
* @param $bargainUserTableId
* @param $uid
* @return bool
*/
public function isBargainUserHelpCount($bargainId, $bargainUserTableId, $uid)
{
$count = $this->dao->count(['bargain_id' => $bargainId, 'bargain_user_id' => $bargainUserTableId, 'uid' => $uid]);
if (!$count) return true;
else return false;
}
/**
* 帮忙砍价
* @param $bargainId
* @param $bargainUserTableId
* @param $uid
* @param array $bargainInfo
* @return string
* @throws \think\db\exception\DataNotFoundException
* @throws \think\db\exception\DbException
* @throws \think\db\exception\ModelNotFoundException
*/
public function setBargainUserHelp($bargainId, $bargainUserTableId, $uid, array $bargainInfo = [])
{
if (!$bargainInfo) {
/** @var StoreBargainServices $bargainService */
$bargainService = app()->make(StoreBargainServices::class);
$bargainInfo = $bargainService->get($bargainId);
if (!$bargainInfo) {
throw new ValidateException('砍价已结束');
}
$bargainInfo = $bargainInfo->toArray();
}
/** @var StoreBargainUserServices $bargainUserService */
$bargainUserService = app()->make(StoreBargainUserServices::class);
[$coverPrice, $alreadyPrice, $surplusPrice, $pricePercent, $bargainUserInfo] = $bargainUserService->getSurplusPrice($bargainUserTableId);
if (0.00 === (float)$surplusPrice) throw new ValidateException('砍价已经完成');
$data = [];
$data['uid'] = $uid;
$data['bargain_id'] = $bargainId;
$data['bargain_user_id'] = $bargainUserTableId;
$data['add_time'] = time();
if ($bargainUserInfo['uid'] == $uid) {
$data['type'] = 1;
} else {
//帮砍次数限制
$count = $this->dao->count(['uid' => $uid, 'bargain_id' => $bargainId, 'type' => 0]);
if ($count >= $bargainInfo['bargain_num']) throw new ValidateException('您不能再帮砍此件商品');
$data['type'] = 0;
}
$people = $this->dao->count(['bargain_user_id' => $bargainUserTableId]);//已经参与砍价的人数
$surplusPeople = $bargainInfo['people_num'] - $people;
if ($surplusPeople == 1) {
$price = $surplusPrice;
} else {
/** @var UserServices $userServices */
$userServices = app()->make(UserServices::class);
$userInfo = $userServices->get($uid);
$price = $this->randomFloat($surplusPrice, $bargainInfo['people_num'], $surplusPeople, $userInfo->add_time == $userInfo->last_time && !$this->dao->count(['uid' => $uid]));
}
$data['price'] = $price;
$allPrice = bcadd((string)$alreadyPrice, (string)$data['price'], 2);
$this->transaction(function () use ($bargainUserService, $bargainUserTableId, $allPrice, $data) {
$res1 = $bargainUserService->update($bargainUserTableId, ['price' => $allPrice]);
$res2 = $this->dao->save($data);
$res = $res1 && $res2;
if (!$res) throw new ValidateException('砍价失败');
});
return $price;
}
/**
* 随机金额
* @param $price
* @param $people
* @param $type
* @return string
*/
public function randomFloat($price, $sum_people, $people, $type = false)
{
$max_percent = bcmul((string)bcdiv((string)$people, (string)$sum_people, 2), '100', 0);
$min_percent = bcmul((string)bcdiv((string)($people - 1), (string)$sum_people, 2), '100', 0);
//按照人数计算保留金额
$retainPrice = bcmul((string)$people, '0.01', 2);
//实际剩余金额
$price = bcsub((string)$price, $retainPrice, 2);
//计算比例
if ($type) {
$percent = '0.5';
} else {
mt_srand();
$percent = bcdiv((string)mt_rand(10, 30), '100', 2);
}
//实际砍掉金额
$cutPrice = bcmul($price, $percent, 2);
//如果计算出来为0，默认砍掉0.01
return $cutPrice != '0.00' ? $cutPrice : '0.01';
}
/**
* 获取砍价商品已砍人数
* @return array
*/
public function getNums()
{
$nums = $this->dao->getNums();
$dat = [];
foreach ($nums as $item) {
$dat[$item['bargain_user_id']] = $item['num'];
}
return $dat;
}
}