#635 export-create-batches creating an empty index file

internal/export/database/export.go

@@ -375,14 +375,18 @@ func (db *ExportDB) LatestExportBatchEnd(ctx context.Context, ec *model.ExportCo
  LIMIT 1
  `, ec.ConfigID)
 
- var latestEnd time.Time
+ var latestEnd sql.NullTime
  if err := row.Scan(&latestEnd); err != nil {
  if err == pgx.ErrNoRows {
  return time.Time{}, nil
  }
  return time.Time{}, fmt.Errorf("scanning result: %w", err)
  }
- return latestEnd, nil
+
+ if !latestEnd.Valid {
+ return time.Time{}, nil
+ }
+ return latestEnd.Time, nil
 }
 
 // ListLatestExportBatchEnds returns a map of export config IDs to their latest