366 lines
10 KiB
PHP
366 lines
10 KiB
PHP
<?php
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namespace app\api\model\bargain;
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use app\api\model\Goods as GoodsModel;
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use app\api\model\bargain\Active as ActiveModel;
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use app\common\model\bargain\Task as TaskModel;
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use app\api\model\bargain\TaskHelp as TaskHelpModel;
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use app\api\service\bargain\Amount as AmountService;
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use app\common\service\Goods as GoodsService;
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use app\common\library\helper;
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/**
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* 砍价任务模型
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* Class Task
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* @package app\api\model\bargain
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*/
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class Task extends TaskModel
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{
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/**
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* 隐藏的字段
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* @var array
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*/
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protected $hidden = [
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'peoples',
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'section',
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'is_delete',
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'wxapp_id',
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'create_time',
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'update_time',
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];
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/**
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* 我的砍价列表
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* @param $userId
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* @return \think\Paginator
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* @throws \think\exception\DbException
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*/
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public function getMyList($userId)
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{
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// 砍价活动列表
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$list = $this->where('user_id', '=', $userId)
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->where('is_delete', '=', 0)
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->order(['create_time' => 'desc'])
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->paginate(5, false, [
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'query' => \request()->request()
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]);
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// 设置商品数据
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$list = GoodsService::setGoodsData($list);
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return $list;
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}
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/**
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* 获取砍价任务详情
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* @param $taskId
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* @param bool $user
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* @return array|bool
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* @throws \think\exception\DbException
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*/
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public function getTaskDetail($taskId, $user = false)
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{
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// 砍价任务详情
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$task = static::detail($taskId, ['user']);
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if (empty($task)) {
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$this->error = '砍价任务不存在';
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return false;
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}
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// 砍价活动详情
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$active = ActiveModel::detail($task['active_id']);
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// 砍价商品详情
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$goods = GoodsModel::detail($task['goods_id']);
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// 商品sku信息
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$goods['goods_sku'] = GoodsModel::getGoodsSku($goods, $task['spec_sku_id']);
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// 好友助力榜
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$help_list = TaskHelpModel::getListByTaskId($taskId);
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// 当前是否为发起人
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$is_creater = $this->isCreater($task, $user);
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// 当前是否已砍
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$is_cut = $this->isCut($help_list, $user);
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return compact('task', 'is_creater', 'is_cut', 'active', 'goods', 'help_list');
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}
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/**
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* 获取砍价任务的商品列表（用于订单结算）
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* @param $taskId
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* @return array|bool
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* @throws \think\Exception
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* @throws \think\exception\DbException
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*/
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public function getTaskGoods($taskId)
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{
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// 砍价任务详情
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$task = static::detail($taskId);
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if (empty($task) || $task['is_delete'] || $task['status'] == false) {
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$this->error = '砍价任务不存在或已结束';
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return false;
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}
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if ($task['is_buy'] == true) {
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$this->error = '该砍价商品已购买';
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return false;
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}
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// 砍价商品详情
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$goods = GoodsModel::detail($task['goods_id']);
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// 商品sku信息
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$goods['goods_sku'] = GoodsModel::getGoodsSku($goods, $task['spec_sku_id']);
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// 商品列表
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$goodsList = [$goods->hidden(['category', 'content', 'image', 'sku'])];
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foreach ($goodsList as &$item) {
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// 商品单价
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$item['goods_price'] = $task['actual_price'];
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// 商品购买数量
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$item['total_num'] = 1;
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$item['spec_sku_id'] = $item['goods_sku']['spec_sku_id'];
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// 商品购买总金额
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$item['total_price'] = $task['actual_price'];
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}
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return $goodsList;
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}
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/**
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* 订单创建后将砍价任务结束
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* @return false|int
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*/
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public function setTaskEnd()
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{
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return $this->save(['status' => 0]);
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}
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/**
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* 获取用户是否正在参与改砍价活动，如果已参与则返回task_id
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* @param $activeId
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* @param $userId
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* @return bool|int
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*/
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public static function getHandByUser($activeId, $userId)
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{
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$taskId = (new static)->where('active_id', '=', $activeId)
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->where('user_id', '=', $userId)
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->where('end_time', '>', time())
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->where('status', '=', 1)
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->where('is_delete', '=', 0)
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->value('task_id');
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return $taskId ?: false;
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}
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/**
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* 新增砍价任务
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* @param $userId
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* @param $activeId
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* @param $goodsSkuId
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* @return bool
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* @throws \think\exception\DbException
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* @throws \Exception
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*/
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public function partake($userId, $activeId, $goodsSkuId)
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{
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// 获取活动详情
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if (!$active = $this->getActiveDetail($activeId)) {
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return false;
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}
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// 验证能否创建砍价任务
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if (!$this->onVerify($active, $userId)) {
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return false;
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}
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// 获取商品详情
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$goods = GoodsModel::detail($active['goods_id']);
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// 商品sku信息
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$goods['goods_sku'] = GoodsModel::getGoodsSku($goods, $goodsSkuId);
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// 事务处理
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return $this->transaction(function () use ($userId, $active, $goodsSkuId, $goods) {
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// 创建砍价任务
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$this->add($userId, $active, $goodsSkuId, $goods);
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// 发起人自砍一刀
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$active['is_self_cut'] && $this->onCutEvent($userId, true);
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return true;
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});
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}
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/**
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* 帮砍一刀
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* @param $user
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* @return bool|false|int
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*/
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public function helpCut($user)
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{
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// 好友助力榜
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$helpList = TaskHelpModel::getListByTaskId($this['task_id']);
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// 当前是否已砍
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if ($this->isCut($helpList, $user)) {
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$this->error = '您已参与砍价，请不要重复操作';
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return false;
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}
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// 帮砍一刀事件
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return $this->transaction(function () use ($user) {
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return $this->onCutEvent($user['user_id'], $this->isCreater($this, $user));
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});
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}
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/**
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* 砍一刀的金额
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* @return mixed
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*/
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public function getCutMoney()
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{
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return $this['section'][$this['cut_people']];
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}
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/**
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* 帮砍一刀事件
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* @param $userId
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* @param bool $isCreater
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* @return false|int
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*/
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private function onCutEvent($userId, $isCreater = false)
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{
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// 砍价金额
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$cutMoney = $this->getCutMoney();
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// 砍价助力记录
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$model = new TaskHelpModel;
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$model->add($this, $userId, $cutMoney, $isCreater);
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// 实际购买金额
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$actualPrice = helper::bcsub($this['actual_price'], $cutMoney);
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// 更新砍价任务信息
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$this->save([
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'cut_people' => ['inc', 1],
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'cut_money' => ['inc', $cutMoney],
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'actual_price' => $actualPrice,
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'is_floor' => helper::bcequal($actualPrice, $this['floor_price']),
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]);
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return true;
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}
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/**
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* 创建砍价任务记录
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* @param $userId
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* @param $active
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* @param $goodsSkuId
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* @param $goods
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* @return false|int
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* @throws \Exception
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*/
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private function add($userId, $active, $goodsSkuId, $goods)
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{
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// 分配砍价金额区间
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$section = $this->calcBargainSection(
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$goods['goods_sku']['goods_price'],
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$active['floor_price'],
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$active['peoples']
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);
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// 新增记录
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return $this->save([
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'active_id' => $active['active_id'],
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'user_id' => $userId,
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'goods_id' => $active['goods_id'],
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'spec_sku_id' => $goodsSkuId,
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'goods_price' => $goods['goods_sku']['goods_price'],
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'floor_price' => $active['floor_price'],
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'peoples' => $active['peoples'],
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'cut_people' => 0,
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'section' => $section,
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'cut_money' => 0.00,
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'actual_price' => $goods['goods_sku']['goods_price'],
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'end_time' => time() + ($active['expiryt_time'] * 3600),
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'is_buy' => 0,
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'status' => 1,
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'wxapp_id' => static::$wxapp_id,
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]);
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}
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/**
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* 砍价任务标记为已购买
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* @return false|int
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*/
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public function setIsBuy()
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{
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return $this->save(['is_buy' => 1]);
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}
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/**
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* 分配砍价金额区间
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* @param $goodsPrice
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* @param $floorPrice
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* @param $peoples
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* @return mixed
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* @throws \Exception
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*/
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private function calcBargainSection($goodsPrice, $floorPrice, $peoples)
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{
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$AmountService = new AmountService(helper::bcsub($goodsPrice, $floorPrice), $peoples);
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return $AmountService->handle()['items'];
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}
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/**
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* 当前是否为发起人
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* @param $task
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* @param $user
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* @return bool
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*/
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private function isCreater($task, $user)
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{
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if ($user === false) return false;
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return $user['user_id'] == $task['user_id'];
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}
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/**
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* 当前是否已砍
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* @param $helpList
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* @param $user
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* @return bool
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*/
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private function isCut($helpList, $user)
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{
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if ($user === false) return false;
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foreach ($helpList as $item) {
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if ($item['user_id'] == $user['user_id']) return true;
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}
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return false;
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}
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/**
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* 获取活动详情
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* @param $activeId
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* @return Active|bool|null
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* @throws \think\exception\DbException
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*/
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private function getActiveDetail($activeId)
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{
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// 获取活动详情
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$ActiveModel = new ActiveModel;
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$detail = $ActiveModel->getDetail($activeId);
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// 活动详情不存在
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if ($detail === false) {
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$this->error = $ActiveModel->getError();
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return false;
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}
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return $detail;
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}
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/**
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* 验证能否创建砍价任务
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* @param $active
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* @param $userId
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* @return bool
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*/
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private function onVerify($active, $userId)
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{
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// 活动是否开始
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if (!$active['is_start']) {
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$this->error = '很抱歉，当前砍价活动未开始';
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return false;
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}
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// 活动是否到期合法
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if ($active['is_end']) {
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$this->error = '很抱歉，当前砍价活动已结束';
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return false;
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}
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// 判断当前用户是否已参加
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$taskId = static::getHandByUser($active['active_id'], $userId);
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if ($taskId !== false && $taskId > 0) {
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$this->error = '很抱歉，当前砍价活动您已参加，无需重复参与';
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return false;
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}
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return true;
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}
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} |