Improve Google Calendar task sync recovery

Author: martin-forge

docs/releases/unreleased.md

@@ -23,3 +23,13 @@ Example:
 ```
 
 -->
+
+## Fixed
+
+- Persist failed Google Calendar task-event deletions in plugin data and retry them after restart or reconnect, preventing orphaned task events when a task file is deleted while Google cleanup fails or sync is not ready.
+- Track exported Google Calendar task events in plugin data so startup can recover cleanup for task files deleted while Obsidian was closed.
+- Persist Google Calendar task sync requests while Google Calendar is not ready and replay the current task state after reconnect for scheduled, due, or both-date calendar modes.
+- Restore cancelled Google Calendar event tombstones when a task is synced to an existing event ID, so deleted-but-still-addressable events become visible again.
+- Prevent duplicate Google Calendar task events when concurrent syncs race before the newly created event ID reaches Obsidian metadata.
+- Prevent pending intermediate status updates from overwriting completed Google Calendar task events when users quickly cycle a task to done.
+- Mark Google Calendar events as completed when tasks were already done before they became calendar-eligible.

src/bootstrap/pluginBootstrap.ts

@@ -301,10 +301,11 @@ export function initializeServicesLazily(plugin: TaskNotesPlugin): void {
 				plugin.taskCalendarSyncService = new (
 					await import("../services/TaskCalendarSyncService")
 				).TaskCalendarSyncService(plugin, plugin.googleCalendarService);
+				plugin.taskCalendarSyncService.startRecoveryQueueProcessor();
 
 				plugin.registerEvent(
 					plugin.emitter.on("file-deleted", (data: FileDeletedEventData) => {
-						if (!plugin.taskCalendarSyncService?.isEnabled()) {
+						if (!plugin.taskCalendarSyncService) {
 							return;
 						}
 

src/components/BatchContextMenu.ts

@@ -353,7 +353,7 @@ export class BatchContextMenu {
 					const file = plugin.app.vault.getAbstractFileByPath(path);
 					if (file) {
 						// Delete from Google Calendar before trashing file
-						if (plugin.taskCalendarSyncService?.isEnabled()) {
+						if (plugin.taskCalendarSyncService) {
 							const task = await plugin.cacheManager.getTaskInfo(path);
 							if (task?.googleCalendarEventId) {
 								try {

src/components/TaskContextMenu.ts

@@ -497,7 +497,7 @@ export class TaskContextMenu {
 						if (confirmed) {
 							// Delete from Google Calendar before trashing file
 							if (
-								plugin.taskCalendarSyncService?.isEnabled() &&
+								plugin.taskCalendarSyncService &&
 								task.googleCalendarEventId
 							) {
 								plugin.taskCalendarSyncService

src/services/GoogleCalendarService.ts

@@ -637,6 +637,9 @@ export class GoogleCalendarService extends CalendarProvider {
 
 			// Build update payload
 			const payload: GoogleCalendarEventPayload = { ...currentEvent };
+			if (payload.status === "cancelled") {
+				payload.status = "confirmed";
+			}
 
 			// Support both 'title' and 'summary'
 			if (updates.title !== undefined || updates.summary !== undefined) {