289 lines
9.7 KiB
PHP
289 lines
9.7 KiB
PHP
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<?php
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// +----------------------------------------------------------------------
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// | likeshop开源商城系统
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// +----------------------------------------------------------------------
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// | 欢迎阅读学习系统程序代码，建议反馈是我们前进的动力
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// | gitee下载：https://gitee.com/likeshop_gitee
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// | github下载：https://github.com/likeshop-github
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// | 访问官网：https://www.likeshop.cn
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// | 访问社区：https://home.likeshop.cn
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// | 访问手册：http://doc.likeshop.cn
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// | 微信公众号：likeshop技术社区
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// | likeshop系列产品在gitee、github等公开渠道开源版本可免费商用，未经许可不能去除前后端官方版权标识
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// | likeshop系列产品收费版本务必购买商业授权，购买去版权授权后，方可去除前后端官方版权标识
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// | 禁止对系统程序代码以任何目的，任何形式的再发布
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// | likeshop团队版权所有并拥有最终解释权
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// +----------------------------------------------------------------------
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// | author: likeshop.cn.team
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// +----------------------------------------------------------------------
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namespace app\api\logic;
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use app\common\{
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enum\GoodsEnum,
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model\Cart,
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basics\Logic,
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model\goods\Goods,
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enum\FootprintEnum
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};
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/**
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* 购物车逻辑层
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* Class CartLogic
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* @package app\api\logic
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*/
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class CartLogic extends Logic
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{
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/**
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* @notes 购物车列表
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* @param $user_id
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* @return array
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* @throws \think\db\exception\DataNotFoundException
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* @throws \think\db\exception\DbException
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* @throws \think\db\exception\ModelNotFoundException
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* @author cjhao
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* @date 2021/9/7 10:23
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*/
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public static function lists($user_id)
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{
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$carts = Cart::with(['goods', 'goods_item', 'shop'])
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->where('user_id', $user_id)
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->order('id desc')
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->select()->toArray();
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$goods_num = 0;
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$total = 0;
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$lists = [];
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$shop_ids = array_unique(array_column($carts, 'shop_id'));
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foreach ($shop_ids as $shop_id) {
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$lists[$shop_id]['is_selected'] = 1;
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$shop_info = $cart_lists = [];
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foreach ($carts as $k => $cart) {
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if ($shop_id != $cart['shop_id']) {
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continue;
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}
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if (empty($shop_info)) {
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$shop_info = [
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'shop_id' => $cart['shop']['id'],
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'shop_name' => $cart['shop']['name'],
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'type' => $cart['shop']['type'],
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'is_pay' => $cart['shop']['is_pay'],
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];
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}
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$sub_price = 0; // 已选中 && 上架 && 未删除 && 规格信息不为空 && 商家支付功能开启
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if ($cart['selected'] == 1 && $cart['goods']['status'] == 1 && $cart['goods']['del'] == 0
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&& !empty($cart['goods_item']) && $cart['shop']['is_pay'])
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{
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$goods_num += $cart['goods_num'];
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$total += $cart['goods_item']['price'] * $cart['goods_num'];
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$sub_price = round($cart['goods_item']['price'] * $cart['goods_num'], 2);
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} else {
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$cart['selected'] = 0;
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}
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// 设置商家选中状态; 满足条件(未选中的商品,上架,未删除,有规格信息,商家支付功能开启) 才影响商家选中状态
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if(!$cart['selected']) {
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if ($cart['goods']['status'] == 1 && $cart['goods']['del'] == 0
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&& !empty($cart['goods_item']) && $cart['shop']['is_pay']) {
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$lists[$shop_id]['is_selected'] = 0;
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}
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}
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$cart_lists[] = [
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'cart_id' => $cart['id'],
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'goods_id' => $cart['goods_id'],
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'goods_name' => $cart['goods']['name'],
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'image' => empty($cart['goods_item']['image']) ? $cart['goods']['image'] : $cart['goods_item']['image'],
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'goods_num' => $cart['goods_num'],
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'goods_status' => $cart['goods']['status'],
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'goods_del' => $cart['goods']['del'],
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'spec_value_str' => $cart['goods_item']['spec_value_str'] ?? '请重新选择规格',
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'price' => $cart['goods_item']['price'],
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'stock' => $cart['goods_item']['stock'],
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'selected' => intval($cart['selected']),
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'item_id' => $cart['item_id'],
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'sub_price' => $sub_price,
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'is_pay' => $cart['shop']['is_pay'],
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'has_item' => empty($cart['goods_item']) ? 0 : 1, //是否有规格信息
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];
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}
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$lists[$shop_id]['shop'] = $shop_info;
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$lists[$shop_id]['cart'] = $cart_lists;
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}
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return [
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'lists' => array_values($lists),
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'total_amount' => round($total, 2),
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'total_num' => $goods_num,
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];
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}
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/**
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* Notes: 添加
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* @param $post
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* @param $user_id
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* @return bool
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* @author 段誉(2021/5/10 19:03)
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*/
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public static function add($post, $user_id)
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{
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try {
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$item_id = $post['item_id'];
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$goods_num = $post['goods_num'];
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$cart = Cart::where(['user_id' => $user_id, 'item_id' => $item_id])->find();
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$cart_num = $post['goods_num'] + (isset($cart) ? $cart['goods_num'] : 0);
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$goods = self::checkCartGoods($item_id, $cart_num);
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if (false === $goods) {
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throw new \Exception(self::getError() ?: '商品信息错误');
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}
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if ($cart) {
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//购物车内已有该商品
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Cart::where(['id' => $cart['id'], 'shop_id' => $goods['shop_id']])
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->update(['goods_num' => $goods_num + $cart['goods_num']]);
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} else {
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//新增购物车记录
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Cart::create([
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'user_id' => $user_id,
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'goods_id' => $goods['id'],
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'goods_num' => $goods_num,
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'item_id' => $item_id,
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'shop_id' => $goods['shop_id'],
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]);
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}
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// 记录访问足迹
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event('Footprint', [
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'type' => FootprintEnum::ADD_CART,
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'user_id' => $user_id,
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'foreign_id' => $goods['id']
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]);
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return true;
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} catch (\Exception $e) {
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self::$error = $e->getMessage();
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return false;
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}
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}
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/**
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* Notes: 变动数量
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* @param $cart_id
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* @param $goods_num
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* @author 段誉(2021/5/11 11:59)
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* @return bool
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* @throws \think\db\exception\DataNotFoundException
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* @throws \think\db\exception\DbException
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* @throws \think\db\exception\ModelNotFoundException
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*/
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public static function change($cart_id, $goods_num)
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{
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$cart = Cart::find($cart_id);
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$goods_num = ($goods_num <= 0) ? 1 : $goods_num;
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if (false === self::checkCartGoods($cart['item_id'], $goods_num)) {
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return false;
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}
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Cart::update(['goods_num' => $goods_num], ['id' => $cart_id]);
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return true;
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}
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/**
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* Notes: 删除
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* @param $cart_id
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* @param $user_id
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* @author 段誉(2021/5/11 12:02)
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* @return bool
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*/
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public static function del($cart_id, $user_id)
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{
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return Cart::where(['id' => $cart_id, 'user_id' => $user_id])->delete();
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}
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/**
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* Notes: 更改选中状态
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* @param $post
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* @param $user_id
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* @author 段誉(2021/5/11 15:49)
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* @return Cart
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*/
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public static function selected($post, $user_id)
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{
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return Cart::where(['user_id' => $user_id, 'id' => $post['cart_id']])
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->update(['selected' => $post['selected']]);
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}
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/**
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* Notes: 购物车数量
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* @param $user_id
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* @author 段誉(2021/5/11 12:07)
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* @return array
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*/
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public static function cartNum($user_id)
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{
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$cart = new Cart();
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$num = $cart->alias('c')
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->join('goods g', 'g.id = c.goods_id')
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->join('goods_item i', 'i.id = c.item_id')
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->where(['g.status' => 1, 'g.del' => 0, 'c.user_id' => $user_id])
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->sum('goods_num');
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return ['num' => $num ?? 0];
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}
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/**
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* Notes: 验证商品
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* @param $item_id
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* @param $goods_num
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* @author 段誉(2021/5/11 11:59)
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* @return bool
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*/
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public static function checkCartGoods($item_id, $goods_num)
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{
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$goodsModel = new Goods();
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$goods = $goodsModel->alias('g')
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->with('shop')
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->field('g.id, g.status, g.del, g.shop_id, g.type,i.stock')
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->join('goods_item i', 'i.goods_id = g.id')
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->where('i.id', $item_id)
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->find();
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if (!$goods['shop']['is_pay']) {
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self::$error = '该商家支付功能已关闭';
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return false;
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}
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if (empty($goods) || $goods['status'] == 0 || $goods['del'] != 0) {
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self::$error = '商品不存在或已下架';
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return false;
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}
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if ($goods['stock'] < $goods_num) {
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self::$error = '很抱歉,库存不足';
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return false;
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}
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if ($goods['type'] == GoodsEnum::TYPE_VIRTUAL) {
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self::$error = '虚拟商品不可加入购物车';
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return false;
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}
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return $goods;
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}
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}
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