package consts

import "strings"

const (
	BillingMethodMonth = 1
	BillingMethodYear  = 2

	RenewDurationUnitMonth = "month"
	RenewDurationUnitYear  = "year"
)

func BillingMethodDurationUnit(billingMethod int) string {
	if billingMethod == BillingMethodMonth {
		return RenewDurationUnitMonth
	}
	return RenewDurationUnitYear
}

func NormalizeRenewDurationUnit(unit string) string {
	if strings.EqualFold(strings.TrimSpace(unit), RenewDurationUnitMonth) {
		return RenewDurationUnitMonth
	}
	return RenewDurationUnitYear
}

func RenewDurationUnitText(unit string) string {
	if NormalizeRenewDurationUnit(unit) == RenewDurationUnitMonth {
		return "个月"
	}
	return "年"
}

func DurationValueToMonths(unit string, value int) int {
	if value <= 0 {
		return 0
	}
	if NormalizeRenewDurationUnit(unit) == RenewDurationUnitMonth {
		return value
	}
	return value * 12
}