bug: add a data validation process to avoid merging incorrect operations

1 files changed, 21 insertions, 0 deletions

diff --git a/bug/label.go b/bug/label.go
index b19a980f..b73222dd 100644
--- a/bug/label.go
+++ b/bug/label.go
@@ -3,6 +3,9 @@ package bug
 import (
 	"fmt"
 	"io"
+	"strings"
+
+	"github.com/MichaelMure/git-bug/util/text"
 )
 
 type Label string
@@ -27,3 +30,21 @@ func (l *Label) UnmarshalGQL(v interface{}) error {
 func (l Label) MarshalGQL(w io.Writer) {
 	w.Write([]byte(`"` + l.String() + `"`))
 }
+
+func (l Label) Validate() error {
+	str := string(l)
+
+	if text.Empty(str) {
+		return fmt.Errorf("empty")
+	}
+
+	if strings.Contains(str, "\n") {
+		return fmt.Errorf("should be a single line")
+	}
+
+	if !text.Safe(str) {
+		return fmt.Errorf("not fully printable")
+	}
+
+	return nil
+}