Refactor memory event handling: replace MemoryBookableSpaceService with a new implementation and integrate caching logic in CalendarEventsBloc

lib/pages/access_management/booking_system/data/services/memory_bookable_space_service.dart

@@ -0,0 +1,63 @@
+import 'package:syncrow_web/pages/access_management/booking_system/data/services/remote_calendar_service.dart';
+import 'package:syncrow_web/pages/access_management/booking_system/domain/LoadEventsParam.dart';
+import 'package:syncrow_web/pages/access_management/booking_system/domain/models/calendar_event_booking.dart';
+import 'package:syncrow_web/pages/access_management/booking_system/domain/services/calendar_system_service.dart';
+
+class MemoryBookableSpaceService implements CalendarSystemService {
+  final Map<String, CalendarEventsResponse> _eventsCache = {};
+
+  @override
+  Future<CalendarEventsResponse> getCalendarEvents({
+    required LoadEventsParam params,
+  }) async {
+    final key = params.generateKey();
+
+    return _eventsCache[key]!;
+  }
+
+  void setEvents(
+    LoadEventsParam param,
+    CalendarEventsResponse events,
+  ) {
+    final key = param.generateKey();
+    _eventsCache[key] = events;
+  }
+
+  void addEvent(LoadEventsParam param, CalendarEventsResponse event) {
+    final key = param.generateKey();
+
+    _eventsCache[key] = event;
+  }
+
+  void clear() {
+    _eventsCache.clear();
+  }
+}
+
+class MemoryCalendarServiceWithRemoteFallback implements CalendarSystemService {
+  final MemoryBookableSpaceService memoryService;
+  final RemoteCalendarService remoteService;
+
+  MemoryCalendarServiceWithRemoteFallback({
+    required this.memoryService,
+    required this.remoteService,
+  });
+
+  @override
+  Future<CalendarEventsResponse> getCalendarEvents({
+    required LoadEventsParam params,
+  }) async {
+    final key = params.generateKey();
+    final doesExistInMemory = memoryService._eventsCache.containsKey(key);
+
+    if (doesExistInMemory) {
+      return memoryService.getCalendarEvents(params: params);
+    } else {
+      final remoteResult =
+          await remoteService.getCalendarEvents(params: params);
+      memoryService.setEvents(params, remoteResult);
+
+      return remoteResult;
+    }
+  }
+}