Two month of work

app/Console/Commands/CaldavSyncCommand.php

@@ -33,6 +33,31 @@ public function handle(CaldavService $service)
             Todo::upsert($todo->attributesToArray(), 'id');
             $count++;
         }
+        // Collect hrefs/URLs returned by the CalDAV server so we can remove local
+        // todos that belong to this calendar but were deleted on the server.
+        $hrefs = array_values(array_filter(array_map(function ($t) {
+            return $t->url ?? null;
+        }, $todos)));
+
+        // Remove local todos that have a URL in this calendar but weren't returned
+        // by the server (i.e. they were deleted remotely). Scope deletion by
+        // calendar prefix to avoid touching other calendars.
+        $calendarId = $service->getCalendarId();
+        $username = config('caldav.username') ?? '';
+        $calendarPrefix = 'calendars/' . $username . '/' . $calendarId;
+
+        if ($calendarId && $username) {
+            Todo::whereNotNull('url')
+                ->where('url', 'like', '%' . $calendarPrefix . "%")
+                ->whereNotIn('url', $hrefs ?: [''])
+                ->delete();
+        }
+
+        // Remove old todos
+        Todo::where('status', 'COMPLETED')
+            ->where('last_modified', '<', now()->subDays(30)) // TODO: get from settings
+            ->where('due_date', '<', now()->subDays(30))
+            ->delete();
 
         Log::info("Synced " . count($todos) . " todos.");
         $this->info("Synced " . count($todos) . " todos.");