customer/internal/utils/tariff.go

package utils

import "penahub.gitlab.yandexcloud.net/pena-services/customer/internal/models"

func CalculateCartPurchasesAmount(tariffs []models.Tariff) int64 {
	sum := int64(0)

	for _, tariff := range tariffs {
		sum += tariff.Price
	}

	return sum
}