290 lines
9.1 KiB
PHP
290 lines
9.1 KiB
PHP
<?php
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namespace app\common\tools;
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use app\ydyd_service\model\UserCartModel;
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use think\Db;
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use think\facade\Cache;
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class UserExtendCart
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{
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/*************************************************************/
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// 华源商品数据
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protected $ex_goods = [];
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/*************************************************************/
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// 当前用户
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protected $user_id = 0;
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public function __construct($user_id=null)
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{
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$this->user_id = session('user_id')?session('user_id'):$user_id;
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//增加扩展的华源商品 不加入缓存 实时读取数据库
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$extend_where[] = ['user_id',"=",$this->user_id];
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$extend_where[] = ['type',"=",'extend'];
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//$extend_cart_data = Db::name("shopping_cart")->where($extend_where)->column("batch_id as id,goods_number as num, unit_price as price, type, extend_data",'batch_id');
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//扩展商品无price_id字段，暂用batch_id代替
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$extend_cart_data = Db::name("user_cart")->where($extend_where)->column("id,batch_id,goods_number as num,unit_price as price,type,extend_data",'batch_id');
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if ($extend_cart_data){
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foreach ($extend_cart_data as $item){
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$this->initExCart($item, true);
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}
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//$this->setExtendGoods($extend_cart_data);//不使用缓存
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$this->setExtendGoods($this->ex_goods);//不使用缓存
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$this->extend_store();
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}
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}
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public function getExtendGoods()
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{
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return $this->ex_goods;
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}
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public function setExtendGoods($goods)
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{
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$this->ex_goods = $goods;
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}
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/**
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* 初始化 加入购物车-》华源商品扩展
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* @param $data
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* @param bool $init_flag
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* @return mixed
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* @throws \Exception
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*/
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public function initExCart($data,$init_flag = false)
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{
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if ($data && $init_flag){
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$pid= $data['batch_id'];
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$this->ex_goods[$pid]['id'] = $data['id'];
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$this->ex_goods[$pid]['num'] = $data['num'];
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$this->ex_goods[$pid]['batch_id'] = $data['batch_id'];
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$this->ex_goods[$pid]['price'] = $data['price'];
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$this->ex_goods[$pid]['total'] = $this->ex_goods[$pid]['num'] * $this->ex_goods[$pid]['price'];
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$this->ex_goods[$pid]['type'] = 'extend';
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$this->ex_goods[$pid]['extend_data'] = $data['extend_data'];
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}
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}
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/***************************************************/
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/**
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* 加入购物车-》华源商品扩展
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* @param $data
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* @param bool $init_flag
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* @return mixed
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* @throws \Exception
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*/
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public function add($data,$init_flag = false)
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{
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if (!is_array($data) || !isset($data['id']) || !isset($data['num']) || !isset($data['price']) || ($data['price'] <0)) {
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throw new \Exception('购物车ADD方法参数设置错误');
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}
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//添加商品支持多商品添加
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//$options = isset($data['options']) ? $data['options'] : '';
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//$sid = md5($data['id']);
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$sid = $data['id'];
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$_where[] = ['user_id',"=",$this->user_id];
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$_where[] = ["batch_id","=",$sid];
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//生成维一ID用于处理相同商品有不同属性时
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if (isset($this->ex_goods[$sid])) {
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//如果数量为0删除商品
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if ($data['num'] <= 0) {
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unset($this->ex_goods[$sid]);
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UserCartModel::where($_where)->delete();
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} else {
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//已经存在相同商品时增加商品数量
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$this->ex_goods[$sid]['num'] = $this->ex_goods[$sid]['num'] + $data['num'];
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$this->ex_goods[$sid]['total'] = $this->ex_goods[$sid]['num'] * $this->ex_goods[$sid]['price'];
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$this->ex_goods[$sid]['type'] = 'extend';
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$this->ex_goods[$sid]['extend_data'] = $data['extend_data'];
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if (!$init_flag){
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$update_data['goods_number'] = $this->ex_goods[$sid]['num'];
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$update_data['unit_price'] = $this->ex_goods[$sid]['price'];
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$update_data['type'] = 'extend';
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$update_data['extend_data'] = $this->ex_goods[$sid]['extend_data'];
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UserCartModel::where($_where)->update($update_data);
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}
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}
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} else {
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if ($data['num'] > 0) {
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$this->ex_goods[$sid] = $data;
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$this->ex_goods[$sid]['total'] = $data['num'] * $data['price'];
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if (!$init_flag) {
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$add_data['user_id'] = $this->user_id;
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$add_data['batch_id'] = $sid;
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$add_data['unit_price'] = $data['price'];
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$add_data['goods_number'] = $data['num'];
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$add_data['type'] = 'extend';
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$add_data['extend_data'] = $data['extend_data'];
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UserCartModel::create($add_data);
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}
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}
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}
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return true;
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}
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/******************************************************/
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/****************************************************/
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// 扩展商品 不加入缓存
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private function extend_store(){
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$cart = [
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'goods_list' => $this->ex_goods,
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'total_num' => $this->getTotalNums(),
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'total_price' => $this->getTotalPrice(),
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'price_id' => $this->getAllPriceID(),
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];
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return $cart;
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}
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/*****************************************************/
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/**
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* 统计购物车中商品分类数量
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*/
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public function getTotalNums()
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{
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$rows = 0;
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foreach ($this->ex_goods as $v) {
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//$rows += $v['num'];
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$rows ++;
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}
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return $rows;
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}
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/**
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* 获得商品汇总价格
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*/
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public function getTotalPrice()
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{
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$total = 0;
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foreach ($this->ex_goods as $v) {
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$total += $v['price'] * $v['num'];
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}
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return $total;
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}
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/**
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* batch_id 充当price_id
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* */
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public function getAllPriceId(){
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$data = [];
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foreach ($this->ex_goods as $v) {
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$data[]= $v['batch_id'];
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}
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return $data;
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}
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/**
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* 更新购物车数量
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* @param $data
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* $data=[
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* "sid"=>'', //商品的唯一SID
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* "num"=>2, //商品数量
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* ]
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* @return bool
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* @throws \Exception
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*/
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public function update($data)
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{
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if ( ! isset($data['sid']) || ! isset($data['num'])) {
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throw new \Exception('购物车update方法参数错误，缺少sid或num值');
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}
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$sid = $data['sid'];
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$_where[] = ['user_id',"=",$this->user_id];
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$_where[] = ["batch_id","=",$sid];
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if (isset($this->ex_goods[$sid])) {
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if ($data['num'] == 0) {
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unset($this->ex_goods[$sid]);
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UserCartModel::where($_where)->delete();
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} else {
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$this->ex_goods[$sid]['num'] = $data['num'];
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if (isset($data['price']) && is_numeric($data['price']) && $data['price'] > 0){
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$this->ex_goods[$sid]['price'] = $data['price'];
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}
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$this->ex_goods[$sid]['total'] = $data['num'] * $this->ex_goods[$sid]['price'];
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$update_data['goods_number'] = $this->ex_goods[$sid]['num'];
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$update_data['unit_price'] = $this->ex_goods[$sid]['price'];
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UserCartModel::where($_where)->update($update_data);
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}
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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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* 获得购物车中的所有数据
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* @return mixed
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*/
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public function getAllData()
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{
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return $this->extend_store();
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}
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/**
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* 获取购物车内所有商品的ID信息
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* @return array
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*/
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public function getAllId()
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{
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$id_arr = [];
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foreach ($this->ex_goods as $k => $item) {
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$id_arr[] = $k;
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}
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return $id_arr;
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}
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/**
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* 获取购物车内所有商品的ID信息(user_cart.id)
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* @return array
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*/
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public function getAllUcId()
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{
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$id_arr = [];
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if (is_array($this->ex_goods)&&$this->ex_goods){
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foreach ($this->ex_goods as $k => $item) {
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$id_arr[] = $item['id'];
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}
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}
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return $id_arr;
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}
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/**
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* 删除购物车
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* @param $sid 商品SID编号
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* @return bool
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* @throws \Exception
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*/
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public function del($sid)
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{
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if (isset($this->ex_goods[$sid])) {
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unset($this->ex_goods[$sid]);
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$_where[] = ['user_id',"=",$this->user_id];
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$_where[] = ["batch_id","=",$sid];
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ShoppingCartModel::where($_where)->delete();
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return true;
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}
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return false;
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}
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/**
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* 删除所有商品
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* @return bool
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* @throws \Exception
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*/
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public function flush()
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{
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//ShoppingCartModel::where("user_id",$this->user_id)->delete();
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UserCartModel::where("user_id",$this->user_id)->delete();
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$this->setExtendGoods([]);
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$this->extend_store();
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return true;
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}
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} |