fixed: error handling in commit;

refactor: exposed untransactional queries for transactional db helper again but with a clearer name this time since it still may be useful

backend/internal/database/helper.go

@@ -18,7 +18,7 @@ type DbHelper struct {
 
 type dbHelperTransactionImpl struct {
 	CTX       context.Context
-	queries   Queries
+	TXlessQueries   Queries
 	TX        pgx.Tx
 	TXQueries Queries
 }
@@ -48,7 +48,7 @@ func NewDbHelperTransaction(dbContext DbContext) (DbHelperTransaction, *dbHelper
 
 	obj := &dbHelperTransactionImpl{
 		CTX:       ctx,
-		queries:   *queries,
+		TXlessQueries:   *queries,
 		TX:        tx,
 		TXQueries: *txQueries,
 	}
@@ -58,10 +58,16 @@ func NewDbHelperTransaction(dbContext DbContext) (DbHelperTransaction, *dbHelper
 
 // Commit implements DbHelperTransaction.
 func (d *dbHelperTransactionImpl) Commit() error {
-	err := d.TX.Commit(d.CTX)
+	errCommit := d.TX.Commit(d.CTX)
 
-	if err != nil {
-		return err
+	if errCommit != nil {
+		errRollback := d.TX.Rollback(d.CTX)
+
+		if errRollback != nil {
+			return errRollback 
+		}
+
+		return errCommit
 	}
 	return nil
 }