package shopping_cart

import (
	"fusenapi/utils/step_price"
	"math"
)

// 计算价格
func CaculateCartPrice(purchaseQuantity int64, stepPrice, stepNum []int, fittingPrice, eachBoxNum int64) (ItemPrice, totalPrice int64) {
	//请求的数量
	reqPurchaseQuantity := purchaseQuantity
	//购买箱数
	boxQuantity := int(math.Ceil(float64(reqPurchaseQuantity) / float64(eachBoxNum)))
	//根据数量获取阶梯价格中对应的价格
	itemPrice := step_price.GetCentStepPrice(boxQuantity, stepNum, stepPrice)
	//如果有配件，单价也要加入配件价格
	itemPrice += fittingPrice
	//单个购物车总价
	totalPrice = itemPrice * reqPurchaseQuantity
	return itemPrice, totalPrice
}