chore: move the go code into a subfolder

apps/api/internal/domain/expiration.go

@@ -0,0 +1,36 @@
+package domain
+
+import (
+	"time"
+
+	"github.com/zitadel/zitadel/internal/zerrors"
+)
+
+var (
+	//most of us won't survive until 12-31-9999 23:59:59, maybe ZITADEL does
+	defaultExpDate = time.Date(9999, time.December, 31, 23, 59, 59, 0, time.UTC)
+)
+
+type expiration interface {
+	GetExpirationDate() time.Time
+	SetExpirationDate(time.Time)
+}
+
+func EnsureValidExpirationDate(key expiration) error {
+	date, err := ValidateExpirationDate(key.GetExpirationDate())
+	if err != nil {
+		return err
+	}
+	key.SetExpirationDate(date)
+	return nil
+}
+
+func ValidateExpirationDate(date time.Time) (time.Time, error) {
+	if date.IsZero() {
+		return defaultExpDate, nil
+	}
+	if date.Before(time.Now()) {
+		return time.Time{}, zerrors.ThrowInvalidArgument(nil, "DOMAIN-dv3t5", "Errors.AuthNKey.ExpireBeforeNow")
+	}
+	return date, nil
+}