feat: Add originalStartTime to event DTOs and service to correctly identify and manage event exceptions in the UI.

admin/src/app/features/calendar/components/calendar-view/single-event-dashboard-event-activation/single-event-dashboard-event-activation.component.ts

@@ -36,10 +36,15 @@ export class SingleEventDashboardEventActivation {
 
     const event = this.event();
     console.info('setEventOccurrenceActivation', event);
-    const eventId = this.event()?.id!;
-    const startTime = this.event()?.startTime!;
+    const eventId = event?.id!;
+    const originalStartTime = event?.originalStartTime!;
     let payload: CreateExceptionDto | undefined;
-    const eventException = event?.exceptions?.length ? event.exceptions[0] : undefined;
+
+    // Correctly find the exception that matches this specific occurrence
+    const eventException = event?.exceptions?.find(ex =>
+      new Date(ex.originalStartTime).getTime() === new Date(originalStartTime).getTime()
+    );
+
     if (eventException) {
       payload = {
         ...eventException,
@@ -50,7 +55,7 @@ export class SingleEventDashboardEventActivation {
       };
     } else {
       payload = {
-        originalStartTime: new Date(startTime),
+        originalStartTime: new Date(originalStartTime),
         isCancelled: !activated,
       };
     }

admin/src/app/features/calendar/models/events-in-range-dto.model.ts

@@ -16,7 +16,7 @@ export type BookingWithUserDto = {
   id: number;
 };
 
-export interface EventExceptionDto{
+export interface EventExceptionDto {
   id: number,
   description: string;
   eventId: number;
@@ -33,6 +33,7 @@ export type CalendarEventDto = {
   id: number;
   title: string;
   startTime: string,
+  originalStartTime: string,
   endTime: string,
   description: string,
   isModified?: boolean;