From 731ed973cb8378d5322d1d379d1c2cf0ea2aca3d Mon Sep 17 00:00:00 2001
From: xucong <850806214@qq.com>
Date: Fri, 16 May 2025 16:34:24 +0800
Subject: [PATCH] =?UTF-8?q?1.=E6=8F=90=E4=BA=A4=E7=BC=BA=E5=A4=B1=E7=9A=84?=
 =?UTF-8?q?=E4=B8=9C=E8=A5=BF?=
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---
 app/api/logic/FreightLogic.php | 178 +++++++++++++++++++++++++++++++++
 app/common/model/Freight.php   |  62 ++++++++++++
 2 files changed, 240 insertions(+)
 create mode 100644 app/api/logic/FreightLogic.php
 create mode 100644 app/common/model/Freight.php

diff --git a/app/api/logic/FreightLogic.php b/app/api/logic/FreightLogic.php
new file mode 100644
index 0000000..b1161e8
--- /dev/null
+++ b/app/api/logic/FreightLogic.php
@@ -0,0 +1,178 @@
+<?php
+// +----------------------------------------------------------------------
+// | likeshop开源商城系统
+// +----------------------------------------------------------------------
+// | 欢迎阅读学习系统程序代码，建议反馈是我们前进的动力
+// | gitee下载：https://gitee.com/likeshop_gitee
+// | github下载：https://github.com/likeshop-github
+// | 访问官网：https://www.likeshop.cn
+// | 访问社区：https://home.likeshop.cn
+// | 访问手册：http://doc.likeshop.cn
+// | 微信公众号：likeshop技术社区
+// | 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
+// |  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
+// | 禁止对系统程序代码以任何目的，任何形式的再发布
+// | likeshop团队版权所有并拥有最终解释权
+// +----------------------------------------------------------------------
+// | author: likeshop.cn.team
+// +----------------------------------------------------------------------
+
+namespace app\api\logic;
+
+use app\common\model\Freight;
+use think\Db;
+
+/**
+ * 运费逻辑
+ * Class FreightLogic
+ * @package app\api\logic
+ */
+class FreightLogic
+{
+
+    /**
+     * User: 意象信息科技 mjf
+     * Desc: 计算运费
+     * @param $goods
+     * @param $user_address
+     * @return float|int
+     */
+    public static function calculateFreight($goods, $user_address)
+    {
+        $shipping_price = 0;
+        $template_list = [];
+
+        if (empty($user_address)){
+            return $shipping_price;
+        }
+
+        foreach ($goods as $good){
+            //统一邮费
+            if ($good['free_shipping_type'] == 2){
+                $shipping_price += round($good['free_shipping'] * $good['goods_num'], 2);
+            }
+
+            //指定运费模板
+            if ($good['free_shipping_type'] == 3 && $good['free_shipping_template_id'] > 0){
+                $template_list[$good['free_shipping_template_id']][] = $good;
+            }
+        }
+
+        foreach ($template_list as $template_id => $template_goods) {
+            $temp = [];
+            $temp['template_id'] = $template_id;
+            $temp['total_volume'] = 0;
+            $temp['total_weight'] = 0;
+            $temp['goods_num'] = 0;
+            foreach ($template_goods as $template_good) {
+                $temp['total_volume'] += $template_good['volume'] * $template_good['goods_num'];
+                $temp['total_weight'] += $template_good['weight'] * $template_good['goods_num'];
+                $temp['goods_num'] += $template_good['goods_num'];
+            }
+            $shipping_price += self::calculate($temp, $user_address);
+        }
+
+        return $shipping_price < 0 ? 0 : $shipping_price;
+    }
+
+
+    /**
+     * User: 意象信息科技 mjf
+     * Desc: 计算运费
+     * @param $data
+     * @param $user_address
+     * @return float|int
+     */
+    public static function calculate($data, $user_address)
+    {
+        $shipping_price = 0;
+
+        $freight = FreightLogic::getFreightsByAddress($data['template_id'], $user_address);
+
+        if (empty($freight)){
+            return $shipping_price;
+        }
+        $unit = 0;
+        //按重量计算
+        if ($freight['charge_way'] == Freight::CHARGE_WAY_WEIGHT){
+            $unit = $data['total_weight'];
+        }
+
+        //按件数计算
+        if ($freight['charge_way'] == Freight::CHARGE_WAY_PIECE){
+            $unit = $data['goods_num'];
+        }
+
+        //按体积计算
+        if ($freight['charge_way'] == Freight::CHARGE_WAY_VOLUME){
+            $unit = $data['total_volume'];
+        }
+
+        if($unit > $freight['first_unit'] && $freight['continue_unit'] > 0){
+            $left = ceil(($unit - $freight['first_unit']) / $freight['continue_unit']);//取整
+            return $freight['first_money'] + $left * $freight['continue_money'];
+        }else{
+            return $freight['first_money'];
+        }
+    }
+
+
+
+    /**
+     * User: 意象信息科技 mjf
+     * Desc: 通过用户地址获取运费模板
+     * @param $address
+     */
+    public static function getFreightsByAddress($template_id, $address)
+    {
+        $district_id = $address['district_id'];
+        $city_id = $address['city_id'];
+        $province_id = $address['province_id'];
+
+        $freights = Db::name('freight')->alias('f')
+            ->join('freight_config c', 'c.freight_id = f.id')
+            ->where('f.id', $template_id)
+            ->order(['f.id' => 'desc', 'c.id' => 'desc'])
+            ->select();
+
+        foreach ($freights as $freight) {
+            $region_ids = explode(',', $freight['region']);
+            if (in_array($district_id, $region_ids)) {
+                return $freight;
+            }
+
+            if (in_array($city_id, $region_ids)) {
+                return $freight;
+            }
+
+            if (in_array($province_id, $region_ids)) {
+                return $freight;
+            }
+
+            if ($freight['region'] = 'all'){
+                $national_freight = $freight;
+            }
+        }
+
+        //会员的省市区id在商家的运费模板(指定地区)中找不到,查一下商家的全国运费模板
+        return $national_freight;
+    }
+
+    /**
+     * User: 意象信息科技 mjf
+     * Desc: 模板中指定地区id是否存在
+     * @param $freights
+     * @param $region_id
+     * @return bool|mixed
+     */
+    public static function isExistRegionId($freights, $region_id)
+    {
+        foreach ($freights as $freight) {
+            $region_ids = explode(',', $freight['region']);
+            if (in_array($region_id, $region_ids)) {
+                return $freight;
+            }
+        }
+        return false;
+    }
+}
\ No newline at end of file
diff --git a/app/common/model/Freight.php b/app/common/model/Freight.php
new file mode 100644
index 0000000..0ce35f8
--- /dev/null
+++ b/app/common/model/Freight.php
@@ -0,0 +1,62 @@
+<?php
+// +----------------------------------------------------------------------
+// | likeshop开源商城系统
+// +----------------------------------------------------------------------
+// | 欢迎阅读学习系统程序代码，建议反馈是我们前进的动力
+// | gitee下载：https://gitee.com/likeshop_gitee
+// | github下载：https://github.com/likeshop-github
+// | 访问官网：https://www.likeshop.cn
+// | 访问社区：https://home.likeshop.cn
+// | 访问手册：http://doc.likeshop.cn
+// | 微信公众号：likeshop技术社区
+// | 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
+// |  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
+// | 禁止对系统程序代码以任何目的，任何形式的再发布
+// | likeshop团队版权所有并拥有最终解释权
+// +----------------------------------------------------------------------
+// | author: likeshop.cn.team
+// +----------------------------------------------------------------------
+
+namespace app\common\model;
+
+use think\Model;
+
+class Freight extends Model
+{
+    protected $name = 'freight';
+
+    protected $autoWriteTimestamp = true;
+
+    //计费方式
+    const CHARGE_WAY_WEIGHT = 1;//按重量计费
+    const CHARGE_WAY_VOLUME = 2; //体积计费
+    const CHARGE_WAY_PIECE = 3;//按件计费
+
+
+    public static function getChargeWay($type)
+    {
+        $data = [
+            self::CHARGE_WAY_WEIGHT => '按重量计费',
+            self::CHARGE_WAY_VOLUME => '按体积计费',
+            self::CHARGE_WAY_PIECE => '按件计费',
+        ];
+
+        if ($type === true) {
+            return $data;
+        }
+
+        return $data[$type] ?? '未知';
+    }
+
+    public function getChargeWayTextAttr($value, $data)
+    {
+        return self::getChargeWay($data['charge_way']);
+    }
+
+
+    public function configs()
+    {
+        return $this->hasMany('freight_config', 'freight_id', 'id');
+    }
+
+}
\ No newline at end of file