263 lines
9.9 KiB
PHP
263 lines
9.9 KiB
PHP
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<?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\PromGoods;
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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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* 促销商品逻辑定义
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* Class CatsLogic
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* @package admin\Logic
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*/
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class PromGoodsLogic extends Prom
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{
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protected $promGoods;//促销活动模型
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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 = $specGoodsPrice;
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//活动和规格是一对多的关系
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if($this->specGoodsPrice){
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//活动商品有规格，活动和规格是一对多
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$this->promGoods = PromGoods::get($specGoodsPrice['prom_id']);
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}else{
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//活动商品没有规格，活动和规格是一对多
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$this->promGoods = PromGoods::get($goods['prom_id']);
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}
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if ($this->promGoods) {
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//每次初始化都检测活动是否失效，如果失效就更新活动和商品恢复成普通商品
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if ($this->checkActivityIsEnd() && $this->promGoods['is_end'] == 0) {
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Db::name('goods')->where(['prom_type'=>3,'prom_id' =>$this->goods['prom_id']])->save(['prom_type' => 0, 'prom_id' => 0]);
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if($this->specGoodsPrice){
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Db::name('spec_goods_price')->where(['prom_type'=>3,'prom_id' =>$this->specGoodsPrice['prom_id']])->save(['prom_type' => 0, 'prom_id' => 0]);
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unset($this->specGoodsPrice);
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$this->specGoodsPrice = SpecGoodsPrice::get($specGoodsPrice['item_id'],'',true);
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}
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$this->promGoods->is_end = 1;
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$this->promGoods->save();
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unset($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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public function getPromModel(){
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return $this->promGoods;
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}
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/**
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* 计算促销价格。
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* @param $Price|原价或者规格价格
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* @return float
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*/
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public function getPromotionPrice($Price){
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switch ($this->promGoods['type']) {
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case 0:
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$promotionPrice = $Price * $this->promGoods['expression'] / 100;//打折优惠
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break;
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case 1:
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$promotionPrice = $Price - $this->promGoods['expression'];//减价优惠
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break;
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case 2:
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$promotionPrice = $this->promGoods['expression'];//固定金额优惠
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break;
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default:
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$promotionPrice = $Price;//原价
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break;
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}
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$promotionPrice = ($promotionPrice >0 ? $promotionPrice : 0); //防止出现负数
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return $promotionPrice;
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}
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/**
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* 活动是否正在进行
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* @return bool
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*/
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public function checkActivityIsAble(){
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if(empty($this->promGoods)){
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return false;
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}
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if(time() > $this->promGoods['start_time'] && time() < $this->promGoods['end_time'] && $this->promGoods['is_end'] == 0){
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return true;
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}
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return false;
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}
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/**
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* 活动是否结束
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* @return bool
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*/
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public function checkActivityIsEnd(){
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if(empty($this->promGoods)){
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return true;
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}
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if(time() > $this->promGoods['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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* 获取商品原始数据
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* @return Goods
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*/
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public function getGoodsInfo()
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{
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return $this->goods;
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}
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/**
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* 获取商品转换活动商品的数据
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* @return static
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*/
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public function getActivityGoodsInfo(){
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$activityGoods = $this->goods;
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$activityGoods['activity_title'] = $this->promGoods['title'];
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$activityGoods['market_price'] = $this->goods['market_price'];
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$activityGoods['start_time'] = $this->promGoods['start_time'];
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$activityGoods['end_time'] = $this->promGoods['end_time'];
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//有规格
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if($this->specGoodsPrice){
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$activityGoods['shop_price'] = $this->getPromotionPrice($this->specGoodsPrice['price']);
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$activityGoods['store_count'] = $this->specGoodsPrice['store_count'];
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//如果价格有变化就将市场价等于商品规格价。
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if($activityGoods['shop_price'] != $this->specGoodsPrice['price']){
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$activityGoods['market_price'] = $this->specGoodsPrice['price'];
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}
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$activityGoods['store_count'] = $this->specGoodsPrice['store_count'];
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}else{
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$activityGoods['shop_price'] = $this->getPromotionPrice($this->goods['shop_price']);
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//如果价格有变化就将市场价等于商品规格价。
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if($activityGoods['shop_price'] != $this->goods['shop_price']){
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$activityGoods['market_price'] = $this->specGoodsPrice['price'];
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}
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}
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$activityGoods['prom_detail'] = $this->promGoods['prom_detail'];
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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->promGoods)){
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return false;
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}
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if(time() > $this->promGoods['end_time']){
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return false;
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}
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if($this->promGoods['is_end'] == 1){
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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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* @param $buyGoods
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* @return array
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*
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public function buyNow($buyGoods){
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if(!$this->checkActivityIsEnd() && $this->checkActivityIsAble()){
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$buyGoods['member_goods_price'] = $this->getPromotionPrice($buyGoods['member_goods_price']);
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}
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$buyGoods['prom_type'] = 1;
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$buyGoods['prom_id'] = $this->promGoods['id'];
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return array('status' => 1, 'msg' => 'success', 'result' => ['buy_goods'=>$buyGoods]);
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}*/
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/**
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* 促销商品立即购买
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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->checkActivityIsEnd() && $this->checkActivityIsAble()){
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if($buyGoods['goods_num'] > $this->promGoods['buy_limit']){
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throw new TpshopException('促销商品立即购买', 0, ['status' => 0, 'msg' => '每人限购' . $this->promGoods['buy_limit'] . '件', 'result' => '']);
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}
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$buyGoods['member_goods_price'] = $this->getPromotionPrice($buyGoods['member_goods_price']);
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}
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$residue_buy_limit = $this->getPromoGoodsResidueGoodsNum($buyGoods['user_id']); //获取用户还能购买商品数量
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$userPromOrderGoodsNum = $this->getUserPromOrderGoodsNum($buyGoods['user_id']); //获取用户已购商品数量
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$userBuyGoodsNum = $buyGoods['goods_num'] + $userPromOrderGoodsNum; //已经下单+要买
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if($userBuyGoodsNum > $this->promGoods['buy_limit']){
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throw new TpshopException('促销商品立即购买', 0, ['status' => 0, 'msg' => '每人限购'.$this->promGoods['buy_limit'].'件，您已下单'.$userPromOrderGoodsNum.'件', 'result' => '']);
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}
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if($buyGoods['goods_num'] > $residue_buy_limit){ //不算购物车的
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throw new TpshopException('促销商品立即购买', 0, ['status' => 0, 'msg' => '商品库存不足，你只能购买'.$residue_buy_limit, 'result' => '']);
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}
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$buyGoods['prom_type'] = 3;
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$buyGoods['prom_id'] = $this->promGoods['id'];
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return $buyGoods;
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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 $user_id
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* @return float|int
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*/
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public function getUserPromOrderGoodsNum($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->promGoods['start_time'], $this->promGoods['end_time']]]
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];
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$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 = [
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'prom_id' => $this->promGoods['id'],
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'prom_type' => 3,
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'order_id' => ['in', implode(',', $order_id_arr)],
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'goods_id' => $this->goods['goods_id'],
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];
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if($this->specGoodsPrice){
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$orderGoodsWhere[ 'spec_key'] = $this->specGoodsPrice['key'];
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}
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$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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* 获取用户剩余购买促销商品数量
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* @param $user_id
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* @return mixed
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*/
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public function getPromoGoodsResidueGoodsNum($user_id){
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$user_purchase_num = $this->getUserPromOrderGoodsNum($user_id); //用户已购商品数量
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//限购》已购
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$residue_buy_limit = $this->promGoods['buy_limit'] - $user_purchase_num; //用户还能买的数量
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$store_count = $this->goods['store_count']; //剩余库存
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if($this->specGoodsPrice){
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$store_count = $this->specGoodsPrice['store_count'];
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}
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if($residue_buy_limit > $store_count){
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return $store_count;
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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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