Load GUI history asynchronously

cmd/vrc_osc_gui/history_view_windows.go

@@ -89,6 +89,22 @@ type historyExportResult struct {
 	SelectedCount int
 }
 
+type historyRefreshResult struct {
+	Rows           []guiWorldVisitRow
+	CalendarCells  []historyCalendarCell
+	DetailRows     []historyDetailRow
+	DetailHeightPx int32
+	SelectedDate   time.Time
+	Month          time.Time
+	SelectedKeys   map[string]bool
+	Status         string
+	Regex          string
+	FromDate       string
+	ToDate         string
+	Err            error
+	Elapsed        time.Duration
+}
+
 var historyEventsCacheMu sync.Mutex
 var historyEventsCache struct {
 	jsonMod  time.Time
@@ -106,11 +122,7 @@ func ensureHistoryState(app *guiApp) {
 		app.historySelectedKeys = map[string]bool{}
 	}
 	if app.historySelectedDate.IsZero() {
-		if latest := latestHistoryDate(); !latest.IsZero() {
-			app.historySelectedDate = latest
-		} else {
-			app.historySelectedDate = time.Now()
-		}
+		app.historySelectedDate = time.Now()
 	}
 	if app.historyMonth.IsZero() {
 		app.historyMonth = time.Date(app.historySelectedDate.Year(), app.historySelectedDate.Month(), 1, 0, 0, 0, 0, app.historySelectedDate.Location())
@@ -757,6 +769,124 @@ func refreshHistoryCache(app *guiApp, force bool) bool {
 	return true
 }
 
+func startHistoryRefresh(app *guiApp, force bool) bool {
+	if app == nil || app.historyRefreshRunning {
+		return false
+	}
+	if !force && app.historyCacheLoaded && !app.historyReloadPending {
+		return false
+	}
+	ensureHistoryState(app)
+	if app.historyRefreshResultCh == nil {
+		app.historyRefreshResultCh = make(chan historyRefreshResult, 1)
+	}
+	work := *app
+	work.historySelectedKeys = cloneHistorySelection(app.historySelectedKeys)
+	work.historyRefreshResultCh = nil
+	work.historyExportResultCh = nil
+	app.historyRefreshRunning = true
+	app.historyReloadPending = true
+	if strings.TrimSpace(app.historyStatus) == "" {
+		app.historyStatus = "reloading..."
+	}
+	hwnd := app.hwnd
+	go func(ch chan<- historyRefreshResult, work guiApp, hwnd uintptr) {
+		start := time.Now()
+		result := historyRefreshResult{
+			SelectedDate: work.historySelectedDate,
+			Month:        work.historyMonth,
+			SelectedKeys: cloneHistorySelection(work.historySelectedKeys),
+			Regex:        work.historyRegex,
+			FromDate:     work.historyFromDate,
+			ToDate:       work.historyToDate,
+		}
+		defer func() {
+			result.Elapsed = time.Since(start)
+			if r := recover(); r != nil {
+				result.Err = fmt.Errorf("refresh panic: %v", r)
+			}
+			select {
+			case ch <- result:
+			default:
+			}
+			if postMessageProc != nil && hwnd != 0 {
+				postMessageProc.Call(hwnd, uintptr(wmHistoryRefreshDone), 0, 0)
+			}
+		}()
+		refreshHistoryCache(&work, true)
+		result.Rows = append([]guiWorldVisitRow(nil), work.historyRows...)
+		result.CalendarCells = append([]historyCalendarCell(nil), work.historyCalendarCells...)
+		result.DetailRows = cloneHistoryDetailRows(work.historyDetailRows)
+		result.DetailHeightPx = work.historyDetailContentHeightPx
+		result.SelectedDate = work.historySelectedDate
+		result.Month = work.historyMonth
+		result.SelectedKeys = cloneHistorySelection(work.historySelectedKeys)
+		result.Status = work.historyStatus
+	}(app.historyRefreshResultCh, work, hwnd)
+	guiLog("history refresh start")
+	return true
+}
+
+func drainHistoryRefreshResult(app *guiApp) bool {
+	if app == nil || app.historyRefreshResultCh == nil || !app.historyRefreshRunning {
+		return false
+	}
+	handled := false
+	for {
+		select {
+		case res := <-app.historyRefreshResultCh:
+			handled = true
+			app.historyRefreshRunning = false
+			if res.Err != nil {
+				app.historyStatus = "reload failed: " + res.Err.Error()
+				app.historyReloadPending = true
+				guiLog(fmt.Sprintf("history refresh failed elapsed=%s err=%v", res.Elapsed, res.Err))
+				invalidateHistoryPanes(app)
+				continue
+			}
+			stale := !sameDay(app.historySelectedDate, res.SelectedDate) ||
+				!sameHistoryMonth(app.historyMonth, res.Month) ||
+				app.historyRegex != res.Regex ||
+				app.historyFromDate != res.FromDate ||
+				app.historyToDate != res.ToDate
+			if stale {
+				app.historyReloadPending = true
+				guiLog("history refresh stale; scheduling another refresh")
+				invalidateHistoryPanes(app)
+				continue
+			}
+			app.historyRows = res.Rows
+			app.historyCalendarCells = res.CalendarCells
+			app.historyDetailRows = res.DetailRows
+			app.historyDetailContentHeightPx = res.DetailHeightPx
+			app.historySelectedDate = res.SelectedDate
+			app.historyMonth = res.Month
+			app.historySelectedKeys = res.SelectedKeys
+			if app.historySelectedKeys == nil {
+				app.historySelectedKeys = map[string]bool{}
+			}
+			app.historyReloadPending = false
+			app.historyCacheLoaded = true
+			if strings.TrimSpace(res.Status) != "" {
+				app.historyStatus = res.Status
+			} else {
+				app.historyStatus = "reloaded: " + time.Now().Format("15:04:05")
+			}
+			guiLog(fmt.Sprintf("history refresh ok elapsed=%s rows=%d details=%d", res.Elapsed, len(res.Rows), len(res.DetailRows)))
+			invalidateHistoryPanes(app)
+		default:
+			return handled
+		}
+	}
+}
+
+func sameHistoryMonth(a, b time.Time) bool {
+	if a.IsZero() || b.IsZero() {
+		return a.IsZero() && b.IsZero()
+	}
+	return a.Year() == b.Year() && a.Month() == b.Month()
+}
+
 func requestHistoryRefresh(app *guiApp, reason string) {
 	if app == nil {
 		return