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84 lines
3.4 KiB
84 lines
3.4 KiB
<?php
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// +----------------------------------------------------------------------
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// | ThinkAdmin
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// +----------------------------------------------------------------------
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// | 版权所有 2014~2019 广州楚才信息科技有限公司 [ http://www.cuci.cc ]
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// +----------------------------------------------------------------------
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// | 官方网站: http://demo.thinkadmin.top
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// +----------------------------------------------------------------------
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// | 开源协议 ( https://mit-license.org )
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// +----------------------------------------------------------------------
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// | gitee 代码仓库：https://gitee.com/zoujingli/ThinkAdmin
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// | github 代码仓库：https://github.com/zoujingli/ThinkAdmin
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// +----------------------------------------------------------------------
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namespace app\store\service;
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use think\Db;
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/**
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* 商城邮费服务
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* Class ExpressService
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* @package app\store\service
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*/
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class ExpressService
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{
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/**
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* 订单邮费计算
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* @param string $province 配送省份
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* @param string $number 计费数量
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* @param string $amount 订单金额
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* @return array
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* @throws \think\db\exception\DataNotFoundException
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* @throws \think\db\exception\ModelNotFoundException
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* @throws \think\exception\DbException
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*/
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public static function price($province, $number, $amount)
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{
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// 读取对应的模板规则
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$map = [['is_default', 'eq', '0'], ['rule', 'like', "%{$province}%"]];
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$rule = Db::name('StoreExpressTemplate')->where($map)->find();
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if (!empty($rule)) return self::buildData($rule, '普通模板', $number, $amount);
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$rule = Db::name('StoreExpressTemplate')->where(['is_default' => '1'])->find();
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return self::buildData($rule, '默认模板', $number, $amount);
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}
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/**
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* 生成邮费数据
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* @param array $rule 模板规则
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* @param string $type 模板类型
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* @param integer $number 计费件数
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* @param double $amount 订单金额
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* @return array
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*/
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protected static function buildData($rule, $type, $number, $amount)
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{
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// 异常规则
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if (empty($rule)) return [
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'express_price' => 0.00, 'express_type' => '未知模板', 'express_desc' => '未匹配到邮费模板',
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];
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// 满减免邮
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if ($rule['order_reduction_state'] && $amount >= $rule['order_reduction_price']) {
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return [
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'express_price' => 0.00, 'express_type' => $type,
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'express_desc' => "订单总金额满{$rule['order_reduction_price']}元减免全部邮费",
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];
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}
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// 首重计费
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if ($number <= $rule['first_number']) return [
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'express_price' => $rule['first_price'], 'express_type' => $type,
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'express_desc' => "首件计费，{$rule['first_number']}件及{$rule['first_number']}以内计费{$rule['first_price']}元",
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];
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// 续重计费
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list($price1, $price2) = [$rule['first_price'], 0];
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if ($rule['next_number'] > 0 && $rule['next_price'] > 0) {
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$price2 = $rule['next_price'] * ceil(($number - $rule['first_number']) / $rule['next_number']);
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}
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return [
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'express_price' => $price1 + $price2, 'express_type' => $type,
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'express_desc' => "续件计费，超出{$rule['first_number']}件，首件费用{$rule['first_price']}元 + 续件费用{$price2}元",
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];
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}
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}
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