Persist current world history

cmd/vrc_osc_gui/history_view_windows.go

@@ -228,12 +228,14 @@ func historyVisitSource() []historyVisitRecord {
 		})
 	}
 	if label, since, ok := currentWorldVisitInfo(); ok && strings.TrimSpace(label) != "" && !since.IsZero() {
-		records = append(records, historyVisitRecord{
-			Key:        historyVisitKey(label, since, time.Time{}, "", "", true),
-			WorldLabel: label,
-			Start:      since,
-			Current:    true,
-		})
+		if !hasOpenHistoryVisit(records, label, since) {
+			records = append(records, historyVisitRecord{
+				Key:        historyVisitKey(label, since, time.Time{}, "", "", true),
+				WorldLabel: label,
+				Start:      since,
+				Current:    true,
+			})
+		}
 	}
 	sort.SliceStable(records, func(i, j int) bool {
 		ti := records[i].End
@@ -252,6 +254,22 @@ func historyVisitSource() []historyVisitRecord {
 	return records
 }
 
+func hasOpenHistoryVisit(records []historyVisitRecord, label string, since time.Time) bool {
+	label = strings.TrimSpace(label)
+	for _, record := range records {
+		if !record.End.IsZero() || record.Start.IsZero() {
+			continue
+		}
+		if !record.Start.Equal(since) {
+			continue
+		}
+		if strings.EqualFold(strings.TrimSpace(record.WorldLabel), label) {
+			return true
+		}
+	}
+	return false
+}
+
 func historyVisitKey(label string, start, end time.Time, worldID, instanceID string, current bool) string {
 	key := strings.TrimSpace(label)
 	if worldID != "" {