Agenda refactor

lib/services/microsoft-calendar-sync.ts

@@ -741,13 +741,88 @@ export async function syncMicrosoftCalendar(
       });
     }
     
+    // If no events found, try to discover which calendar actually has events
     if (microsoftEvents.length === 0) {
-      logger.warn('No Microsoft events found in date range', {
+      logger.warn('No Microsoft events found in specified calendar, discovering available calendars', {
         calendarSyncId,
         email: creds.email,
-        externalCalendarId: syncConfig.externalCalendarId,
+        externalCalendarId: calendarIdToUse,
         dateRange: { start: startDate.toISOString(), end: endDate.toISOString() },
       });
+      
+      // Discover all available calendars
+      const availableCalendars = await discoverMicrosoftCalendars(
+        syncConfig.calendar.userId,
+        creds.email
+      );
+      
+      logger.info('Discovered Microsoft calendars', {
+        calendarSyncId,
+        calendarsCount: availableCalendars.length,
+        calendarNames: availableCalendars.map(cal => cal.name),
+      });
+      
+      // Try to find a calendar with events
+      let calendarWithEvents = null;
+      for (const cal of availableCalendars) {
+        try {
+          const testEvents = await fetchMicrosoftEvents(
+            syncConfig.calendar.userId,
+            creds.email,
+            cal.id,
+            startDate,
+            endDate
+          );
+          
+          if (testEvents.length > 0) {
+            calendarWithEvents = { calendar: cal, events: testEvents };
+            logger.info('Found calendar with events', {
+              calendarSyncId,
+              calendarId: cal.id,
+              calendarName: cal.name,
+              eventCount: testEvents.length,
+            });
+            break;
+          }
+        } catch (error) {
+          logger.debug('Error checking calendar for events', {
+            calendarId: cal.id,
+            calendarName: cal.name,
+            error: error instanceof Error ? error.message : String(error),
+          });
+          // Continue to next calendar
+        }
+      }
+      
+      // If we found a calendar with events, update the sync config
+      if (calendarWithEvents) {
+        const newCalendarId = calendarWithEvents.calendar.id;
+        logger.info('Updating sync config to use calendar with events', {
+          calendarSyncId,
+          oldCalendarId: calendarIdToUse,
+          newCalendarId: newCalendarId,
+          newCalendarName: calendarWithEvents.calendar.name,
+          eventCount: calendarWithEvents.events.length,
+        });
+        
+        await prisma.calendarSync.update({
+          where: { id: calendarSyncId },
+          data: {
+            externalCalendarId: newCalendarId,
+            lastSyncError: null,
+          },
+        });
+        
+        // Use the events from the calendar we found
+        microsoftEvents = calendarWithEvents.events;
+      } else {
+        logger.warn('No Microsoft events found in any calendar', {
+          calendarSyncId,
+          email: creds.email,
+          calendarsChecked: availableCalendars.length,
+          dateRange: { start: startDate.toISOString(), end: endDate.toISOString() },
+        });
+      }
     } else {
       // Log events in the future to help debug
       const now = new Date();