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<?php
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namespace app\base\logic;
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class Freight extends Base
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{
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/**
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* 获取商品的运费模板并进行计算
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* @param int $freight_id 运费模板ID
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* @param string $weight 单件商品重量
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* @param int $number 商品数量
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* @param string $price 商品价格
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* @param int $province_id 配送地址省ID
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* @param int $city_id 配送地址城市ID
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* @param int $area_id 配送地址区ID
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* @date 2022-11-22
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*/
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public function getFreight($freight_id = 0, $weight = '', $number = 0, $price = '', $province_id = 0, $city_id = 0, $area_id = 0)
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{
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$freight_model = new \app\base\model\freight\Freight();
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if (empty($freight_id)) {
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return 0;
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}
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// 获取运费
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$freight = $freight_model->getOneData([
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['id', '=', $freight_id]
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]);
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if (empty($freight)) {
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return 0;
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}
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// 判断是否该商品免运费（是否满足满X元包邮）
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if ($price * $number >= $freight['free_money']) {
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return 0;
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}
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$start_standard = 0; //首件或首重
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$start_fee = 0;//首费
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$add_standard = 0;//续件或续重
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$add_fee = 0;//续费
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$standard = 0; //进行判断的标准
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#TODO 可以将2种计费方式的字段统一到一个字段 运费规则是否符合标准逻辑
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if ($freight['type'] == 1) { //计费方式 1--按件计费 2--按重计费
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$start_standard = $freight['first_number'];
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$start_fee = $freight['first_number_money'];
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$add_standard = $freight['second_number'];
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$add_fee = $freight['second_number_money'];
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$standard = $number;
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} else if ($freight['type'] == 2) {
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$start_standard = $freight['first_weight'];
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$start_fee = $freight['first_weight_money'];
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$add_standard = $freight['second_weight'];
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$add_fee = $freight['second_weight_money'];
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$standard = $weight * $number;
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}
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if (!empty($freight['fee_conf'])) { //运费模板中运费信息对象，包含默认运费和指定地区运费
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foreach ($freight['fee_conf'] as $key => $value) {
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if ((!empty($province_id) && array_key_exists($province_id, $value['province_list'])) &&
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(!empty($city_id) && array_key_exists($city_id, $value['city_list'])) &&
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(!empty($area_id) && array_key_exists($area_id, $value['area_list']))
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) {
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$start_standard = $value['start_standard'];
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$start_fee = $value['start_fee'];
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$add_standard = $value['add_standard'];
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$add_fee = $value['add_fee'];
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break;
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}
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}
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}
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// 计算并返回金额
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return $this->computedFreight($standard, $start_standard, $start_fee, $add_standard, $add_fee);
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}
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/**
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* 计算并返回金额
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* @param int $standard 进行判断的标准
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* @param int $start_standard 首个 标准
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* @param int $start_fee 首个 收费
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* @param int $add_standard 续 标准
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* @param int $add_fee 续 收费
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* @date 2021-03-01
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*/
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public function computedFreight($standard = 0, $start_standard = 0, $start_fee = 0, $add_standard = 0, $add_fee = 0)
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{
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//小于等于首（件/重），运费=取首（件/重）费；以此类推。
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if ($standard <= $start_standard) {
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return $start_fee;
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}
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//超出首（件/重）后，超出部分小于等于续（件/重），运费=首重+续费，
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return $start_fee + ceil(($standard - $start_standard) / $add_standard) * $add_fee;
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}
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}
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