Fix Validation Domain for login command

pkg/utils/helper.go

@@ -7,6 +7,7 @@ import (
 	"strconv"
 	"strings"
 	"time"
+	"unicode"
 )
 
 func FormatCreatedTime(timestamp string) (string, error) {
@@ -39,6 +40,42 @@ func FormatUrl(url string) string {
 	return url
 }
 
+// ValidateDomain checks if the given domain string is non-empty, properly formatted, and a valid domain.
+func FormatToValidDomain(input string) (string, error) {
+	parts := strings.Split(input, ".")
+	if len(parts) != 3 {
+		return "", fmt.Errorf("invalid server address input, must be in the format: subdomain.example.tld")
+	}
+
+	for _, part := range parts {
+		if !isValidLabel(part) {
+			return "", fmt.Errorf("invalid domain label: %s", part)
+		}
+	}
+
+	return strings.Join(parts, "."), nil
+}
+
+// isValidLabel checks if a domain label is valid according to DNS rules
+func isValidLabel(label string) bool {
+	if len(label) == 0 || len(label) > 63 {
+		return false
+	}
+	trimedLabel := strings.TrimSpace(label)
+	if len(trimedLabel) != len(label) {
+		return false
+	}
+	for _, ch := range label {
+		if !unicode.IsLetter(ch) && !unicode.IsDigit(ch) && ch != '-' {
+			return false
+		}
+	}
+	if label[0] == '-' || label[len(label)-1] == '-' {
+		return false
+	}
+	return true
+}
+
 func FormatSize(size int64) string {
 	mbSize := float64(size) / (1024 * 1024)
 	return fmt.Sprintf("%.2fMiB", mbSize)

pkg/views/login/create.go

@@ -3,7 +3,6 @@ package login
 import (
 	"errors"
 	"fmt"
-	"net/url"
 	"strings"
 
 	"github.com/charmbracelet/huh"
@@ -32,10 +31,11 @@ func CreateView(loginView *LoginView) {
 					if strings.TrimSpace(str) == "" {
 						return errors.New("server cannot be empty or only spaces")
 					}
-					formattedUrl := utils.FormatUrl(str)
-					if _, err := url.ParseRequestURI(formattedUrl); err != nil {
-						return errors.New("please enter the correct server format")
+					_, err := utils.FormatToValidDomain(str)
+					if err != nil {
+						return err
 					}
+
 					return nil
 				}),
 			huh.NewInput().