fix(migrate): confirm before migration

app/migrate/migrate.go

@@ -11,18 +11,8 @@ import (
 )
 
 func Migrate(ctx context.Context, to map[string]string) error {
-	meta, err := kv.From(ctx).MigrateTo()
-	if err != nil {
-		return errors.Wrap(err, "read data")
-	}
-
-	dest, err := kv.NewWithMap(to)
-	if err != nil {
-		return errors.Wrap(err, "create dest storage")
-	}
-
 	var confirm bool
-	if err = survey.AskOne(&survey.Confirm{
+	if err := survey.AskOne(&survey.Confirm{
 		Message: "It will overwrite the namespace data in the destination storage, continue?",
 		Default: false,
 	}, &confirm); err != nil {
@@ -32,6 +22,16 @@ func Migrate(ctx context.Context, to map[string]string) error {
 		return nil
 	}
 
+	meta, err := kv.From(ctx).MigrateTo()
+	if err != nil {
+		return errors.Wrap(err, "read data")
+	}
+
+	dest, err := kv.NewWithMap(to)
+	if err != nil {
+		return errors.Wrap(err, "create dest storage")
+	}
+
 	if err = dest.MigrateFrom(meta); err != nil {
 		return errors.Wrap(err, "migrate from")
 	}