ui calculator

pkg/storage/storage.go

@@ -36,6 +36,11 @@ type UIStorage interface {
 	// I/O or encoding error may occur, it that case callback func will be called with non-nil error.
 	SaveStateAsync(client.State, func(error))
 
+	// ReportExistsAsync asynchronously checks whether given [model.GameID] and turn number exists in the Storage.
+	// Passed callback func will will accept non-nil error in case of I/O or decoding errors occuried,
+	// otherwise callback func accepts boolean result.
+	ReportExistsAsync(client.GameID, uint, func(bool, error))
+
 	// LoadReportAsync loads a [report.Report] for a given [model.GameID] and turn number from filesystem asynchronously.
 	// Passed callback func will will accept non-nil error in case of I/O or decoding errors occuried,
 	// otherwise callback func accepts loaded [report.Report].