dingding/application/common/service/ExpressService.php

<?php

// +----------------------------------------------------------------------
// | ThinkAdmin
// +----------------------------------------------------------------------
// | 版权所有 2014~2019 广州楚才信息科技有限公司 [ http://www.cuci.cc ]
// +----------------------------------------------------------------------
// | 官方网站: http://demo.thinkadmin.top
// +----------------------------------------------------------------------
// | 开源协议 ( https://mit-license.org )
// +----------------------------------------------------------------------
// | gitee 代码仓库：https://gitee.com/zoujingli/ThinkAdmin
// | github 代码仓库：https://github.com/zoujingli/ThinkAdmin
// +----------------------------------------------------------------------

namespace app\common\service;

use think\Db;

/**
 * 商城邮费服务
 * Class ExpressService
 * @package app\store\service
 */
class ExpressService
{


    public static function getGoodsExpressPrice($goods_info,$address_info,$num)
    {
        if($goods_info['freight_type'] == 0){
            return  ['code'=>200,'freight'=> $goods_info['postage'],'msg'=>'','id'=>0];
        } else if($goods_info['freight_id']){
            return self::getExpressPrice($address_info,$goods_info['freight_id'],$num) ; // 快递费用
        }else{
            return  ['code'=>200,'freight'=> 0,'msg'=>'','id'=>0];
        }
    }


    /**
     * @param array $address_info  收货地址
     * @param $freight_id 运费模板id
     * @param int $num 商品数量
     * @return array
     * @throws \think\db\exception\DataNotFoundException
     * @throws \think\db\exception\ModelNotFoundException
     * @throws \think\exception\DbException
     */
    public static function getExpressPrice($address_info,$freight_id,$num = 1)
    {
        $data = ['code'=>200,'freight'=>0 ,'msg'=>'','id'=>0];
        $template_info = Db::name('freight_template')->find($freight_id);
        if(empty($address_info)){
            $data['code'] = 201;
            $data['msg'] = '运费模板不存在';
            return  $data;
        }
        $city_id = $address_info['city_id'];
        $no_express = explode(',',$template_info['no_express']);
        if(in_array($city_id,$no_express)) return ['code'=>202,'freight'=>0 ,'msg'=>'该收货地址不配送物流'];
        // 模板自定义分组
        $custom     =  json_decode($template_info['custom'],true);
        $base_num   = $template_info['base_num'];// 基件数量
        $base_price = $template_info['base_price']; // 基件费用
        $base_keep_price = $template_info['base_keep_price']; //  续件费用
        foreach($custom as $cus_info) {
            $express =explode(',',$cus_info['express']);
            if(in_array($city_id,$express)) {
                $base_num = $cus_info['first_num'];
                $base_price = $cus_info['first_price'];
                $base_keep_price = $cus_info['keep_price'];
                break;
            }
        }
        if($base_num >= $num ) return  $data = ['code'=>200,'freight'=>$base_price ,'msg'=>'ok'];
        $sub_keep = bcmul(bcsub($num,$base_num),$base_keep_price,2);
        return   $data = ['code'=>200,'freight'=>bcadd($base_price,$sub_keep,2) ,'msg'=>'ok'];
    }

}