chore: 并入 iotlcm-admin-svr 历史到 admin-svr/（原提交 49818c6）

admin-svr/server/internal/consts/package_duration.go

@@ -0,0 +1,42 @@
+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
+}