<?php
/**
 * User: admin
 * Date Time: 2021/5/21 20:50
 */

namespace common\components;

use Yii;
//运费计算
class freight
{

    //模仿达达运费计算
    /**
     * 0km < d <=2    8元
     * 2km < d <=10  每新增1km加2
     * 10km < d <=50  每新增5km 加6
     *
     * 重量
     * 0 <w <=2 kg  不加价
     * 2kg < w <= 10 kg  每增1 kg 加2
     * 10 kg < w <= 50kg  每新增 5kg 加6
    */
    /**
     * @param $startLat
     * @param $starLng
     * @param $endLat
     * @param $endLng
     * @param $weight 重量kg
     */
    public static function getCost($startLat,$starLng,$endLat,$endLng,$weight)
    {
        if($weight > 50 ){
            return "";
            // util::fail("重量太重了哦！");
        }
        //后端计算距离 m
        $phpStatDistance = util::getDistance($startLat, $starLng, $endLat, $endLng);
        $phpStatDistance = $phpStatDistance/1000;
        if($phpStatDistance > 50) {
            return "";
            // util::fail("距离太远了哦！");
        }
        //起步
        $cost = 9;
        //距离计算
        Yii::info("距离为：".$phpStatDistance);

        $phpStatDistance = $phpStatDistance -2;
        if($phpStatDistance > 0){
            if ($phpStatDistance <=10){
                //每新增1km加2
                $phpStatDistanceCeil = ceil($phpStatDistance);
                $diffCost = $phpStatDistanceCeil*2;
                $cost += $diffCost;
            }else{
                //8*2
                $cost += 16;
            }
            if($phpStatDistance > 10){
                //每新增5km 加6
                $diff = ceil(($phpStatDistance - 10) / 5);
                $diffCost = $diff*6;
                $cost += $diffCost;
            }
        }

        //重量计算
        Yii::info("重量为：".$weight);
        $weight = $weight -2;
        if($weight > 0){
            if ($weight <=10){
                //每增1 kg 加2
                $weightCeil = ceil($weight);
                $diffCost = $weightCeil*2;
                $cost += $diffCost;
                $weight = $weight -2;
            }else{
                //8*2
                $cost += 16;
            }
            if($weight > 10){
                //每新增 5kg 加6
                $diff = ceil(($weight - 10) / 5);
                $diffCost = $diff*6;
                $cost += $diffCost;
            }
        }

        return $cost;
    }

}