TF-2858 Implement update event attendance status keywords property in email api

lib/features/email/domain/model/event_action.dart

@@ -1,6 +1,8 @@
 
 import 'package:equatable/equatable.dart';
 import 'package:flutter/cupertino.dart';
+import 'package:jmap_dart_client/jmap/core/patch_object.dart';
+import 'package:model/extensions/keyword_identifier_extension.dart';
 import 'package:tmail_ui_user/main/localizations/app_localizations.dart';
 
 enum EventActionType {
@@ -18,6 +20,40 @@ enum EventActionType {
         return AppLocalizations.of(context).no;
     }
   }
+
+  PatchObject generateEventAttendanceStatusActionPath() {
+    switch(this) {
+      case EventActionType.yes:
+        return PatchObject({
+          KeyWordIdentifierExtension.acceptedEventAttendance.generatePath(): true,
+          KeyWordIdentifierExtension.tentativelyAcceptedEventAttendance.generatePath(): null,
+          KeyWordIdentifierExtension.rejectedEventAttendance.generatePath(): null,
+        });
+      case EventActionType.maybe:
+        return PatchObject({
+          KeyWordIdentifierExtension.acceptedEventAttendance.generatePath(): null,
+          KeyWordIdentifierExtension.tentativelyAcceptedEventAttendance.generatePath(): true,
+          KeyWordIdentifierExtension.rejectedEventAttendance.generatePath(): null,
+        });
+      case EventActionType.no:
+        return PatchObject({
+          KeyWordIdentifierExtension.acceptedEventAttendance.generatePath(): null,
+          KeyWordIdentifierExtension.tentativelyAcceptedEventAttendance.generatePath(): null,
+          KeyWordIdentifierExtension.rejectedEventAttendance.generatePath(): true,
+        });
+    }
+  }
+
+  String getToastMessageSuccess(BuildContext context) {
+    switch(this) {
+      case EventActionType.yes:
+        return AppLocalizations.of(context).youWillAttendThisMeeting;
+      case EventActionType.maybe:
+        return AppLocalizations.of(context).youMayAttendThisMeeting;
+      case EventActionType.no:
+        return AppLocalizations.of(context).youWillNotAttendThisMeeting;
+    }
+  }
 }
 
 class EventAction with EquatableMixin {