228 lines
8.3 KiB
PHP
228 lines
8.3 KiB
PHP
<?php
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/**
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* tpshop
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* ============================================================================
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* 版权所有 2015-2027 深圳搜豹网络科技有限公司，并保留所有权利。
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* 网站地址: http://www.tp-shop.cn
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* ----------------------------------------------------------------------------
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* 这不是一个自由软件！您只能在不用于商业目的的前提下对程序代码进行修改和使用 .
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* 不允许对程序代码以任何形式任何目的的再发布。
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* ============================================================================
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* Author: IT宇宙人
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* Date: 2015-09-09
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*/
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namespace app\common\logic;
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use app\common\model\FlashSale;
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use app\common\model\Goods;
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use app\common\model\SpecGoodsPrice;
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use app\common\util\TpshopException;
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use think\Model;
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use think\db;
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/**
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* 秒杀逻辑定义
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* Class CatsLogic
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* @package admin\Logic
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*/
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class FlashSaleLogic extends Prom
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{
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protected $flashSale;//抢购活动模型
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protected $goods;//商品模型
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protected $specGoodsPrice;//商品规格模型
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public function __construct($goods, $specGoodsPrice)
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{
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parent::__construct();
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$this->goods = $goods;
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$this->specGoodsPrice = $specGoodsPrice;
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if($this->specGoodsPrice){
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//活动商品有规格，规格和活动是一对一
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$this->flashSale = FlashSale::get($specGoodsPrice['prom_id']);
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}else{
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//活动商品没有规格，活动和商品是一对一
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$this->flashSale = FlashSale::get($goods['prom_id']);
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}
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if ($this->flashSale) {
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//每次初始化都检测活动是否结束，如果失效就更新活动和商品恢复成普通商品
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if ($this->checkActivityIsEnd() && $this->flashSale['is_end'] == 0) {
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if($this->specGoodsPrice){
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Db::name('spec_goods_price')->where('item_id', $this->specGoodsPrice['item_id'])->save(['prom_type' => 0, 'prom_id' => 0]);
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$goodsPromCount = Db::name('spec_goods_price')->where('goods_id', $this->specGoodsPrice['goods_id'])->where('prom_type','>',0)->count('item_id');
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if($goodsPromCount == 0){
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Db::name('goods')->where("goods_id", $this->specGoodsPrice['goods_id'])->save(['prom_type' => 0, 'prom_id' => 0]);
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}
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unset($this->specGoodsPrice);
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$this->specGoodsPrice = SpecGoodsPrice::get($specGoodsPrice['item_id']);
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}else{
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Db::name('goods')->where("goods_id", $this->flashSale['goods_id'])->save(['prom_type' => 0, 'prom_id' => 0]);
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}
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$this->flashSale->is_end = 1;
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$this->flashSale->save();
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unset($this->goods);
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$this->goods = Goods::get($goods['goods_id']);
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}
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}
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}
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/**
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* 活动是否正在进行
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* @return bool
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*/
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public function checkActivityIsAble(){
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if(empty($this->flashSale)){
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return false;
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}
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if(time() > $this->flashSale['start_time'] && time() < $this->flashSale['end_time'] && $this->flashSale['is_end'] == 0){
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return true;
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}
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return false;
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}
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/**
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* 活动是否结束
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* @return bool
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*/
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public function checkActivityIsEnd(){
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if(empty($this->flashSale)){
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return true;
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}
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if($this->flashSale['buy_num'] >= $this->flashSale['goods_num']){
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return true;
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}
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if(time() > $this->flashSale['end_time']){
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return true;
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}
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return false;
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}
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/**
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* 获取用户抢购已购商品数量
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* @param $user_id
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* @return float|int
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*/
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public function getUserFlashOrderGoodsNum($user_id){
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$orderWhere = [
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'user_id'=>$user_id,
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'order_status' => ['<>', 3],
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'add_time' => ['between', [$this->flashSale['start_time'], $this->flashSale['end_time']]]
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];
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$order_id_arr = Db::name('order')->where($orderWhere)->getField('order_id', true);
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if ($order_id_arr) {
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$orderGoodsWhere = ['prom_id' => $this->flashSale['id'], 'prom_type' => 1, 'order_id' => ['in', implode(',', $order_id_arr)]];
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$goods_num = DB::name('order_goods')->where($orderGoodsWhere)->sum('goods_num');
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if($goods_num){
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return $goods_num;
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}else{
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return 0;
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}
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} else {
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return 0;
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}
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}
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/**
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* 获取用户剩余抢购商品数量
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* @author lxl 2017-5-11
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* @param $user_id|用户ID
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* @return mixed
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*/
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public function getUserFlashResidueGoodsNum($user_id){
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$purchase_num = $this->getUserFlashOrderGoodsNum($user_id); //用户抢购已购商品数量
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$residue_num = $this->flashSale['goods_num'] - $this->flashSale['buy_num']; //剩余库存
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//限购》已购
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$residue_buy_limit = $this->flashSale['buy_limit'] - $purchase_num;
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if($residue_buy_limit > $residue_num){
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return $residue_num;
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}else{
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return $residue_buy_limit;
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}
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}
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/**
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* 获取单个抢购活动
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* @return static
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*/
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public function getPromModel(){
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return $this->flashSale;
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}
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/**
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* 获取商品原始数据
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* @return static
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*/
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public function getGoodsInfo()
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{
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return $this->goods;
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}
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/**
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* 获取商品转换活动商品的数据
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* @return static
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*/
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public function getActivityGoodsInfo(){
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if($this->specGoodsPrice){
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//活动商品有规格，规格和活动是一对一
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$activityGoods = $this->specGoodsPrice;
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$activityGoods['market_price'] =$this->specGoodsPrice['price'];
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}else{
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//活动商品没有规格，活动和商品是一对一
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$activityGoods = $this->goods;
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$activityGoods['market_price'] =$this->goods['shop_price'];
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}
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$activityGoods['activity_title'] = $this->flashSale['title'];
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$activityGoods['shop_price'] = $this->flashSale['price'];
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$activityGoods['store_count'] = $this->flashSale['store_count'];
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$activityGoods['start_time'] = $this->flashSale['start_time'];
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$activityGoods['end_time'] = $this->flashSale['end_time'];
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$activityGoods['buy_limit'] = $this->flashSale['buy_limit'];
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$activityGoods['virtual_num'] =0;
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return $activityGoods;
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}
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/**
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* 该活动是否已经失效
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*/
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public function IsAble(){
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if(empty($this->flashSale)){
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return false;
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}
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if($this->flashSale['is_end'] == 1){
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return false;
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}
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if($this->flashSale['buy_num'] >= $this->flashSale['goods_num']){
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return false;
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}
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if(time() > $this->flashSale['end_time']){
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return false;
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}
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return true;
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}
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/**
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* 抢购商品立即购买
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* @param $buyGoods
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* @return mixed
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* @throws TpshopException
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*/
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public function buyNow($buyGoods){
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if($this->checkActivityIsAble()){
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if($buyGoods['goods_num'] > $this->flashSale['buy_limit']){
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throw new TpshopException('抢购商品立即购买', 0, ['status' => 0, 'msg' => '每人限购'.$this->flashSale['buy_limit'].'件', 'result' => '']);
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}
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}
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$userFlashOrderGoodsNum = $this->getUserFlashOrderGoodsNum($buyGoods['user_id']); //获取用户抢购已购商品数量
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$userBuyGoodsNum = $buyGoods['goods_num'] + $userFlashOrderGoodsNum;
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if($userBuyGoodsNum > $this->flashSale['buy_limit']){
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throw new TpshopException('抢购商品立即购买', 0, ['status' => 0, 'msg' => '每人限购'.$this->flashSale['buy_limit'].'件，您已下单'.$userFlashOrderGoodsNum.'件', 'result' => '']);
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}
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$flashSalePurchase = $this->flashSale['goods_num'] - $this->flashSale['buy_num'];//抢购剩余库存
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if($buyGoods['goods_num'] > $flashSalePurchase){
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throw new TpshopException('抢购商品立即购买', 0, ['status' => 0, 'msg' => '商品库存不足，剩余'.$flashSalePurchase, 'result' => '']);
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}
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$buyGoods['member_goods_price'] = $this->flashSale['price'];
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$buyGoods['prom_type'] = 1;
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$buyGoods['prom_id'] = $this->flashSale['id'];
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return $buyGoods;
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}
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} |