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