293 lines
8.4 KiB
PHP
293 lines
8.4 KiB
PHP
|
<?php
|
||
|
|
|
||
|
|
namespace app\api\model;
|
||
|
|
|
||
|
|
use think\Cache;
|
||
|
|
use app\api\model\Goods as GoodsModel;
|
||
|
|
|
||
|
|
use app\common\library\helper;
|
||
|
|
use app\common\service\wechat\wow\Shoping as WowService;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 购物车管理
|
||
|
|
* Class Cart
|
||
|
|
* @package app\api\model
|
||
|
|
*/
|
||
|
|
class Cart
|
||
|
|
{
|
||
|
|
/* @var string $error 错误信息 */
|
||
|
|
public $error = '';
|
||
|
|
|
||
|
|
/* @var \think\Model|\think\Collection $user 用户信息 */
|
||
|
|
private $user;
|
||
|
|
|
||
|
|
/* @var int $user_id 用户id */
|
||
|
|
private $user_id;
|
||
|
|
|
||
|
|
/* @var int $wxapp_id 小程序商城id */
|
||
|
|
private $wxapp_id;
|
||
|
|
|
||
|
|
/* @var array $cart 购物车列表 */
|
||
|
|
private $cart = [];
|
||
|
|
|
||
|
|
/* @var bool $clear 是否清空购物车 */
|
||
|
|
private $clear = false;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 构造方法
|
||
|
|
* Cart constructor.
|
||
|
|
* @param \think\Model|\think\Collection $user
|
||
|
|
*/
|
||
|
|
public function __construct($user)
|
||
|
|
{
|
||
|
|
$this->user = $user;
|
||
|
|
$this->user_id = $this->user['user_id'];
|
||
|
|
$this->wxapp_id = $this->user['wxapp_id'];
|
||
|
|
$this->cart = Cache::get('cart_' . $this->user_id) ?: [];
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 购物车列表 (含商品信息)
|
||
|
|
* @return array
|
||
|
|
* @param string $cartIds 请求参数
|
||
|
|
* @throws \think\Exception
|
||
|
|
* @throws \think\db\exception\DataNotFoundException
|
||
|
|
* @throws \think\db\exception\ModelNotFoundException
|
||
|
|
* @throws \think\exception\DbException
|
||
|
|
*/
|
||
|
|
public function getList($cartIds)
|
||
|
|
{
|
||
|
|
// 获取购物车商品列表
|
||
|
|
return $this->getOrderGoodsList($cartIds);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 获取购物车列表
|
||
|
|
* @param string|null $cartIds 购物车索引集 (为null时则获取全部)
|
||
|
|
* @return array
|
||
|
|
*/
|
||
|
|
public function getCartList($cartIds = null)
|
||
|
|
{
|
||
|
|
if (empty($cartIds)) return $this->cart;
|
||
|
|
$cartList = [];
|
||
|
|
$indexArr = (strpos($cartIds, ',') !== false) ? explode(',', $cartIds) : [$cartIds];
|
||
|
|
foreach ($indexArr as $index) {
|
||
|
|
isset($this->cart[$index]) && $cartList[$index] = $this->cart[$index];
|
||
|
|
}
|
||
|
|
return $cartList;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 获取购物车中的商品列表
|
||
|
|
* @param $cartIds
|
||
|
|
* @return array|bool
|
||
|
|
* @throws \think\Exception
|
||
|
|
* @throws \think\db\exception\DataNotFoundException
|
||
|
|
* @throws \think\db\exception\ModelNotFoundException
|
||
|
|
* @throws \think\exception\DbException
|
||
|
|
*/
|
||
|
|
private function getOrderGoodsList($cartIds)
|
||
|
|
{
|
||
|
|
// 购物车商品列表
|
||
|
|
$goodsList = [];
|
||
|
|
// 获取购物车列表
|
||
|
|
$cartList = $this->getCartList($cartIds);
|
||
|
|
if (empty($cartList)) {
|
||
|
|
$this->setError('当前购物车没有商品');
|
||
|
|
return $goodsList;
|
||
|
|
}
|
||
|
|
// 购物车中所有商品id集
|
||
|
|
$goodsIds = array_unique(helper::getArrayColumn($cartList, 'goods_id'));
|
||
|
|
// 获取并格式化商品数据
|
||
|
|
$sourceData = (new GoodsModel)->getListByIds($goodsIds);
|
||
|
|
$sourceData = helper::arrayColumn2Key($sourceData, 'goods_id');
|
||
|
|
// 格式化购物车数据列表
|
||
|
|
foreach ($cartList as $key => $item) {
|
||
|
|
// 判断商品不存在则自动删除
|
||
|
|
if (!isset($sourceData[$item['goods_id']])) {
|
||
|
|
$this->delete($key);
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
/* @var GoodsModel $goods 商品信息 */
|
||
|
|
$goods = clone $sourceData[$item['goods_id']];
|
||
|
|
// 判断商品是否已删除
|
||
|
|
if ($goods['is_delete']) {
|
||
|
|
$this->delete($key);
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
// 商品sku信息
|
||
|
|
$goods['goods_sku'] = GoodsModel::getGoodsSku($goods, $item['goods_sku_id']);
|
||
|
|
$goods['goods_sku_id'] = $item['goods_sku_id'];
|
||
|
|
$goods['spec_sku_id'] = $goods['goods_sku']['spec_sku_id'];
|
||
|
|
// 商品sku不存在则自动删除
|
||
|
|
if (empty($goods['goods_sku'])) {
|
||
|
|
$this->delete($key);
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
// 商品单价
|
||
|
|
$goods['goods_price'] = $goods['goods_sku']['goods_price'];
|
||
|
|
// 购买数量
|
||
|
|
$goods['total_num'] = $item['goods_num'];
|
||
|
|
// 商品总价
|
||
|
|
$goods['total_price'] = bcmul($goods['goods_price'], $item['goods_num'], 2);
|
||
|
|
$goodsList[] = $goods->hidden(['category', 'content', 'image', 'sku']);
|
||
|
|
}
|
||
|
|
return $goodsList;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 加入购物车
|
||
|
|
* @param int $goodsId 商品id
|
||
|
|
* @param int $goodsNum 加入购物车的数量
|
||
|
|
* @param string $goodsSkuId 商品sku索引
|
||
|
|
* @return bool
|
||
|
|
* @throws \app\common\exception\BaseException
|
||
|
|
* @throws \think\exception\DbException
|
||
|
|
*/
|
||
|
|
public function add($goodsId, $goodsNum, $goodsSkuId)
|
||
|
|
{
|
||
|
|
// 购物车商品索引
|
||
|
|
$index = "{$goodsId}_{$goodsSkuId}";
|
||
|
|
// 加入购物车后的商品数量
|
||
|
|
$cartGoodsNum = $goodsNum + (isset($this->cart[$index]) ? $this->cart[$index]['goods_num'] : 0);
|
||
|
|
// 获取商品信息
|
||
|
|
$goods = GoodsModel::detail($goodsId);
|
||
|
|
// 验证商品能否加入
|
||
|
|
if (!$this->checkGoods($goods, $goodsSkuId, $cartGoodsNum)) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
// 将商品同步到好物圈
|
||
|
|
if (!$this->isExistGoodsId($goodsId)) {
|
||
|
|
(new WowService($this->wxapp_id))->add($this->user, [$goods]);
|
||
|
|
}
|
||
|
|
// 记录到购物车列表
|
||
|
|
$this->cart[$index] = [
|
||
|
|
'goods_id' => $goodsId,
|
||
|
|
'goods_num' => $cartGoodsNum,
|
||
|
|
'goods_sku_id' => $goodsSkuId,
|
||
|
|
'create_time' => time()
|
||
|
|
];
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 验证购物车中是否存在某商品
|
||
|
|
* @param $goodsId
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
private function isExistGoodsId($goodsId)
|
||
|
|
{
|
||
|
|
foreach ($this->cart as $item) {
|
||
|
|
if ($item['goods_id'] == $goodsId) return true;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 验证商品是否可以购买
|
||
|
|
* @param GoodsModel $goods 商品信息
|
||
|
|
* @param string $goodsSkuId 商品sku索引
|
||
|
|
* @param $cartGoodsNum
|
||
|
|
* @return bool
|
||
|
|
*/
|
||
|
|
private function checkGoods($goods, $goodsSkuId, $cartGoodsNum)
|
||
|
|
{
|
||
|
|
// 判断商品是否下架
|
||
|
|
if (!$goods || $goods['is_delete'] || $goods['goods_status']['value'] != 10) {
|
||
|
|
$this->setError('很抱歉，商品信息不存在或已下架');
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
// 商品sku信息
|
||
|
|
$goods['goods_sku'] = GoodsModel::getGoodsSku($goods, $goodsSkuId);
|
||
|
|
// 判断商品库存
|
||
|
|
if ($cartGoodsNum > $goods['goods_sku']['stock_num']) {
|
||
|
|
$this->setError('很抱歉，商品库存不足');
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 减少购物车中某商品数量
|
||
|
|
* @param int $goodsId
|
||
|
|
* @param string $goodsSkuId
|
||
|
|
*/
|
||
|
|
public function sub($goodsId, $goodsSkuId)
|
||
|
|
{
|
||
|
|
$index = "{$goodsId}_{$goodsSkuId}";
|
||
|
|
$this->cart[$index]['goods_num'] > 1 && $this->cart[$index]['goods_num']--;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 删除购物车中指定商品
|
||
|
|
* @param string $cartIds (支持字符串ID集)
|
||
|
|
*/
|
||
|
|
public function delete($cartIds)
|
||
|
|
{
|
||
|
|
$indexArr = strpos($cartIds, ',') !== false ? explode(',', $cartIds) : [$cartIds];
|
||
|
|
foreach ($indexArr as $index) {
|
||
|
|
if (isset($this->cart[$index])) unset($this->cart[$index]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 获取当前用户购物车商品总数量(含件数)
|
||
|
|
* @return int
|
||
|
|
*/
|
||
|
|
public function getTotalNum()
|
||
|
|
{
|
||
|
|
return helper::getArrayColumnSum($this->cart, 'goods_num');
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 获取当前用户购物车商品总数量(不含件数)
|
||
|
|
* @return int
|
||
|
|
*/
|
||
|
|
public function getGoodsNum()
|
||
|
|
{
|
||
|
|
return count($this->cart);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 析构方法
|
||
|
|
* 将cart数据保存到缓存文件
|
||
|
|
*/
|
||
|
|
public function __destruct()
|
||
|
|
{
|
||
|
|
$this->clear !== true && Cache::set('cart_' . $this->user_id, $this->cart, 86400 * 15);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 清空当前用户购物车
|
||
|
|
* @param null $cartIds
|
||
|
|
*/
|
||
|
|
public function clearAll($cartIds = null)
|
||
|
|
{
|
||
|
|
if (empty($cartIds)) {
|
||
|
|
$this->clear = true;
|
||
|
|
Cache::rm('cart_' . $this->user_id);
|
||
|
|
} else {
|
||
|
|
$this->delete($cartIds);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 设置错误信息
|
||
|
|
* @param $error
|
||
|
|
*/
|
||
|
|
private function setError($error)
|
||
|
|
{
|
||
|
|
empty($this->error) && $this->error = $error;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 获取错误信息
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
public function getError()
|
||
|
|
{
|
||
|
|
return $this->error;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|