Format calendar event description

core/lib/presentation/utils/html_transformer/sanitize_autolink_filter.dart

@@ -7,6 +7,7 @@ import 'package:linkify/linkify.dart';
 class SanitizeAutolinkFilter {
 
   final HtmlEscape htmlEscape;
+  final bool escapeHtml;
   final _linkifyOption = const LinkifyOptions(
     humanize: true,
     looseUrl: true,
@@ -18,7 +19,7 @@ class SanitizeAutolinkFilter {
     const UrlLinkifier()
   ];
 
-  SanitizeAutolinkFilter(this.htmlEscape);
+  SanitizeAutolinkFilter(this.htmlEscape, {this.escapeHtml = true});
 
   String process(String inputText) {
     try {
@@ -36,7 +37,7 @@ class SanitizeAutolinkFilter {
 
       for (var element in elements) {
         if (element is TextElement) {
-          final escapedHtml = htmlEscape.convert(element.text);
+          final escapedHtml = escapeHtml ? htmlEscape.convert(element.text) : element.text;
           htmlTextBuffer.write(escapedHtml);
         } else if (element is EmailElement) {
           final emailLinkTag = _buildEmailLinkTag(

core/lib/presentation/utils/html_transformer/text/new_line_transformer.dart

@@ -0,0 +1,15 @@
+import 'dart:convert';
+
+import 'package:core/presentation/utils/html_transformer/base/text_transformer.dart';
+
+class NewLineTransformer extends TextTransformer {
+  const NewLineTransformer();
+
+  @override
+  String process(String text, HtmlEscape htmlEscape) {
+    return text
+      .replaceAll('\n', '<br>')
+      .replaceAll('\r', ' ')
+      .replaceAll('\t', '    ');
+  }
+}

core/lib/presentation/utils/html_transformer/text/sanitize_autolink_unescape_html_transformer.dart

@@ -0,0 +1,13 @@
+import 'dart:convert';
+
+import 'package:core/presentation/utils/html_transformer/base/text_transformer.dart';
+import 'package:core/presentation/utils/html_transformer/sanitize_autolink_filter.dart';
+
+class SanitizeAutolinkUnescapeHtmlTransformer extends TextTransformer {
+  const SanitizeAutolinkUnescapeHtmlTransformer();
+
+  @override
+  String process(String text, HtmlEscape htmlEscape) {
+    return SanitizeAutolinkFilter(htmlEscape, escapeHtml: false).process(text);
+  }
+}

lib/features/email/data/repository/calendar_event_repository_impl.dart

@@ -1,19 +1,24 @@
 
 import 'package:core/data/model/source_type/data_source_type.dart';
+import 'package:core/presentation/utils/html_transformer/transform_configuration.dart';
 import 'package:jmap_dart_client/jmap/account_id.dart';
 import 'package:jmap_dart_client/jmap/core/id.dart';
+import 'package:jmap_dart_client/jmap/mail/calendar/calendar_event.dart';
 import 'package:jmap_dart_client/jmap/mail/calendar/reply/calendar_event_accept_response.dart';
 import 'package:jmap_dart_client/jmap/mail/calendar/reply/calendar_event_maybe_response.dart';
 import 'package:jmap_dart_client/jmap/mail/calendar/reply/calendar_event_reject_response.dart';
 import 'package:tmail_ui_user/features/email/data/datasource/calendar_event_datasource.dart';
+import 'package:tmail_ui_user/features/email/data/datasource/html_datasource.dart';
 import 'package:tmail_ui_user/features/email/domain/repository/calendar_event_repository.dart';
+import 'package:tmail_ui_user/features/email/presentation/extensions/calendar_event_extension.dart';
 import 'package:tmail_ui_user/features/email/presentation/model/blob_calendar_event.dart';
 
 class CalendarEventRepositoryImpl extends CalendarEventRepository {
 
   final Map<DataSourceType, CalendarEventDataSource> _calendarEventDataSource;
+  final HtmlDataSource _htmlDataSource;
 
-  CalendarEventRepositoryImpl(this._calendarEventDataSource);
+  CalendarEventRepositoryImpl(this._calendarEventDataSource, this._htmlDataSource);
 
   @override
   Future<List<BlobCalendarEvent>> parse(AccountId accountId, Set<Id> blobIds) {
@@ -49,4 +54,33 @@ class CalendarEventRepositoryImpl extends CalendarEventRepository {
     return _calendarEventDataSource[DataSourceType.network]!
       .rejectEventInvitation(accountId, blobIds, language);
   }
+
+  @override
+  Future<List<BlobCalendarEvent>> transformCalendarEventDescription(
+    List<BlobCalendarEvent> blobCalendarEvents,
+    TransformConfiguration transformConfiguration,
+  ) async {
+    return Future.wait(blobCalendarEvents.map((blobCalendarEvent) async {
+      return BlobCalendarEvent(
+        blobId: blobCalendarEvent.blobId,
+        calendarEventList: await Future.wait(blobCalendarEvent.calendarEventList.map((calendarEvent) {
+          return _transformCalendarEventDescription(calendarEvent, transformConfiguration);
+        })),
+      );
+    }));
+  }
+
+  Future<CalendarEvent> _transformCalendarEventDescription(
+    CalendarEvent calendarEvent,
+    TransformConfiguration transformConfiguration,
+  ) async {
+    return calendarEvent.copyWith(
+      description: calendarEvent.description?.trim().isNotEmpty == true
+        ? await _htmlDataSource.transformHtmlEmailContent(
+            calendarEvent.description!,
+            transformConfiguration,
+          )
+        : calendarEvent.description,
+    );
+  }
 }

lib/features/email/domain/repository/calendar_event_repository.dart

@@ -1,4 +1,5 @@
 
+import 'package:core/presentation/utils/html_transformer/transform_configuration.dart';
 import 'package:jmap_dart_client/jmap/account_id.dart';
 import 'package:jmap_dart_client/jmap/core/id.dart';
 import 'package:jmap_dart_client/jmap/mail/calendar/reply/calendar_event_accept_response.dart';
@@ -23,4 +24,8 @@ abstract class CalendarEventRepository {
     AccountId accountId,
     Set<Id> blobIds,
     String? language);
+
+  Future<List<BlobCalendarEvent>> transformCalendarEventDescription(
+    List<BlobCalendarEvent> blobCalendarEvents,
+    TransformConfiguration transformConfiguration);
 }

lib/features/email/domain/usecases/parse_calendar_event_interactor.dart

@@ -1,5 +1,6 @@
 import 'package:core/presentation/state/failure.dart';
 import 'package:core/presentation/state/success.dart';
+import 'package:core/presentation/utils/html_transformer/transform_configuration.dart';
 import 'package:dartz/dartz.dart';
 import 'package:jmap_dart_client/jmap/account_id.dart';
 import 'package:jmap_dart_client/jmap/core/id.dart';
@@ -15,15 +16,19 @@ class ParseCalendarEventInteractor {
   Stream<Either<Failure, Success>> execute(
     AccountId accountId,
     Set<Id> blobIds,
-    String emailContents
+    TransformConfiguration transformConfiguration,
   ) async* {
     try {
       yield Right(ParseCalendarEventLoading());
 
       final listBlobCalendarEvent = await _calendarEventRepository.parse(accountId, blobIds);
+      final listBlobCalendarEventWithTransformedDescription = await _calendarEventRepository.transformCalendarEventDescription(
+        listBlobCalendarEvent,
+        transformConfiguration,
+      );
 
-      if (listBlobCalendarEvent.isNotEmpty) {
-        yield Right(ParseCalendarEventSuccess(listBlobCalendarEvent));
+      if (listBlobCalendarEventWithTransformedDescription.isNotEmpty) {
+        yield Right(ParseCalendarEventSuccess(listBlobCalendarEventWithTransformedDescription));
       } else {
         yield Left(ParseCalendarEventFailure(NotFoundCalendarEventException()));
       }

lib/features/email/presentation/bindings/calendar_event_interactor_bindings.dart

@@ -3,7 +3,10 @@ import 'package:get/get.dart';
 import 'package:jmap_dart_client/http/http_client.dart';
 import 'package:tmail_ui_user/features/base/interactors_bindings.dart';
 import 'package:tmail_ui_user/features/email/data/datasource/calendar_event_datasource.dart';
+import 'package:tmail_ui_user/features/email/data/datasource/html_datasource.dart';
 import 'package:tmail_ui_user/features/email/data/datasource_impl/calendar_event_datasource_impl.dart';
+import 'package:tmail_ui_user/features/email/data/datasource_impl/html_datasource_impl.dart';
+import 'package:tmail_ui_user/features/email/data/local/html_analyzer.dart';
 import 'package:tmail_ui_user/features/email/data/network/calendar_event_api.dart';
 import 'package:tmail_ui_user/features/email/data/repository/calendar_event_repository_impl.dart';
 import 'package:tmail_ui_user/features/email/domain/repository/calendar_event_repository.dart';
@@ -11,6 +14,7 @@ import 'package:tmail_ui_user/features/email/domain/usecases/calendar_event_acce
 import 'package:tmail_ui_user/features/email/domain/usecases/maybe_calendar_event_interactor.dart';
 import 'package:tmail_ui_user/features/email/domain/usecases/calendar_event_reject_interactor.dart';
 import 'package:tmail_ui_user/features/email/domain/usecases/parse_calendar_event_interactor.dart';
+import 'package:tmail_ui_user/main/exceptions/cache_exception_thrower.dart';
 import 'package:tmail_ui_user/main/exceptions/remote_exception_thrower.dart';
 
 class CalendarEventInteractorBindings extends InteractorsBindings {
@@ -18,6 +22,7 @@ class CalendarEventInteractorBindings extends InteractorsBindings {
   @override
   void bindingsDataSource() {
     Get.lazyPut<CalendarEventDataSource>(() => Get.find<CalendarEventDataSourceImpl>());
+    Get.lazyPut<HtmlDataSource>(() => Get.find<HtmlDataSourceImpl>());
   }
 
   @override
@@ -26,6 +31,9 @@ class CalendarEventInteractorBindings extends InteractorsBindings {
     Get.lazyPut(() => CalendarEventDataSourceImpl(
       Get.find<CalendarEventAPI>(),
       Get.find<RemoteExceptionThrower>()));
+    Get.lazyPut(() => HtmlDataSourceImpl(
+      Get.find<HtmlAnalyzer>(),
+      Get.find<CacheExceptionThrower>()));
   }
 
   @override
@@ -44,7 +52,8 @@ class CalendarEventInteractorBindings extends InteractorsBindings {
   @override
   void bindingsRepositoryImpl() {
     Get.lazyPut(() => CalendarEventRepositoryImpl(
-      {DataSourceType.network: Get.find<CalendarEventDataSource>()}
+      {DataSourceType.network: Get.find<CalendarEventDataSource>()},
+      Get.find<HtmlDataSource>(),
     ));
   }
 }

lib/features/email/presentation/controller/single_email_controller.dart

@@ -4,6 +4,9 @@ import 'dart:typed_data';
 
 import 'package:better_open_file/better_open_file.dart' as open_file;
 import 'package:core/core.dart';
+import 'package:core/presentation/utils/html_transformer/text/sanitize_autolink_unescape_html_transformer.dart';
+import 'package:core/presentation/utils/html_transformer/text/new_line_transformer.dart';
+import 'package:core/presentation/utils/html_transformer/text/standardize_html_sanitizing_transformers.dart';
 import 'package:dartz/dartz.dart';
 import 'package:dio/dio.dart';
 import 'package:flutter/cupertino.dart';
@@ -519,7 +522,6 @@ class SingleEmailController extends BaseController with AppLoaderMixin {
         _parseCalendarEventAction(
           accountId: mailboxDashBoardController.accountId.value!,
           blobIds: success.attachments?.calendarEventBlobIds ?? {},
-          emailContents: success.htmlEmailContent
         );
       } else {
         emailContents.value = success.htmlEmailContent;
@@ -564,7 +566,6 @@ class SingleEmailController extends BaseController with AppLoaderMixin {
         _parseCalendarEventAction(
           accountId: mailboxDashBoardController.accountId.value!,
           blobIds: success.attachments?.calendarEventBlobIds ?? {},
-          emailContents: success.htmlEmailContent
         );
       } else {
         emailContents.value = success.htmlEmailContent;
@@ -1466,13 +1467,26 @@ class SingleEmailController extends BaseController with AppLoaderMixin {
       CapabilityIdentifier.jamesCalendarEvent.isSupported(session, accountId);
   }
 
+  @visibleForTesting
+  parseCalendarEventAction({
+    required AccountId accountId,
+    required Set<Id> blobIds,
+  }) => _parseCalendarEventAction(accountId: accountId, blobIds: blobIds);
+
   void _parseCalendarEventAction({
     required AccountId accountId,
     required Set<Id> blobIds,
-    required String emailContents
   }) {
     log("SingleEmailController::_parseCalendarEventAction:blobIds: $blobIds");
-    consumeState(_parseCalendarEventInteractor!.execute(accountId, blobIds, emailContents));
+    consumeState(_parseCalendarEventInteractor!.execute(
+      accountId,
+      blobIds,
+      TransformConfiguration.fromTextTransformers(const [
+        SanitizeAutolinkUnescapeHtmlTransformer(),
+        StandardizeHtmlSanitizingTransformers(),
+        NewLineTransformer(),
+      ])
+    ));
   }
 
   void _handleParseCalendarEventSuccess(ParseCalendarEventSuccess success) {

lib/features/email/presentation/extensions/calendar_event_extension.dart

@@ -5,10 +5,21 @@ import 'package:core/presentation/resources/image_paths.dart';
 import 'package:core/utils/app_logger.dart';
 import 'package:date_format/date_format.dart' as date_format;
 import 'package:flutter/material.dart';
+import 'package:jmap_dart_client/jmap/core/utc_date.dart';
 import 'package:jmap_dart_client/jmap/mail/calendar/calendar_event.dart';
 import 'package:jmap_dart_client/jmap/mail/calendar/properties/attendee/calendar_attendee.dart';
 import 'package:jmap_dart_client/jmap/mail/calendar/properties/attendee/calendar_attendee_participation_status.dart';
+import 'package:jmap_dart_client/jmap/mail/calendar/properties/calendar_duration.dart';
+import 'package:jmap_dart_client/jmap/mail/calendar/properties/calendar_event_status.dart';
+import 'package:jmap_dart_client/jmap/mail/calendar/properties/calendar_extension_fields.dart';
+import 'package:jmap_dart_client/jmap/mail/calendar/properties/calendar_free_busy_status.dart';
+import 'package:jmap_dart_client/jmap/mail/calendar/properties/calendar_organizer.dart';
+import 'package:jmap_dart_client/jmap/mail/calendar/properties/calendar_priority.dart';
+import 'package:jmap_dart_client/jmap/mail/calendar/properties/calendar_privacy.dart';
+import 'package:jmap_dart_client/jmap/mail/calendar/properties/calendar_sequence.dart';
+import 'package:jmap_dart_client/jmap/mail/calendar/properties/event_id.dart';
 import 'package:jmap_dart_client/jmap/mail/calendar/properties/event_method.dart';
+import 'package:jmap_dart_client/jmap/mail/calendar/properties/recurrence_rule/recurrence_rule.dart';
 import 'package:tmail_ui_user/main/localizations/app_localizations.dart';
 import 'package:tmail_ui_user/main/utils/app_utils.dart';
 
@@ -364,4 +375,52 @@ extension CalendarEventExtension on CalendarEvent {
     method == EventMethod.request ||
     method == EventMethod.add ||
     method == EventMethod.counter;
+
+  CalendarEvent copyWith({
+    EventId? eventId,
+    String? title,
+    String? description,
+    DateTime? startDate,
+    DateTime? endDate,
+    UTCDate? startUtcDate,
+    UTCDate? endUtcDate,
+    CalendarDuration? duration,
+    String? timeZone,
+    String? location,
+    EventMethod? method,
+    CalendarSequence? sequence,
+    CalendarPrivacy? privacy,
+    CalendarPriority? priority,
+    CalendarFreeBusyStatus? freeBusyStatus,
+    CalendarEventStatus? status,
+    CalendarOrganizer? organizer,
+    List<CalendarAttendee>? participants,
+    CalendarExtensionFields? extensionFields,
+    List<RecurrenceRule>? recurrenceRules,
+    List<RecurrenceRule>? excludedCalendarEvents,
+  }) {
+    return CalendarEvent(
+      eventId: eventId ?? this.eventId,
+      title: title ?? this.title,
+      description: description ?? this.description,
+      startDate: startDate ?? this.startDate,
+      endDate: endDate ?? this.endDate,
+      startUtcDate: startUtcDate ?? this.startUtcDate,
+      endUtcDate: endUtcDate ?? this.endUtcDate,
+      duration: duration ?? this.duration,
+      timeZone: timeZone ?? this.timeZone,
+      location: location ?? this.location,
+      method: method ?? this.method,
+      sequence: sequence ?? this.sequence,
+      privacy: privacy ?? this.privacy,
+      priority: priority ?? this.priority,
+      freeBusyStatus: freeBusyStatus ?? this.freeBusyStatus,
+      status: status ?? this.status,
+      organizer: organizer ?? this.organizer,
+      participants: participants ?? this.participants,
+      extensionFields: extensionFields ?? this.extensionFields,
+      recurrenceRules: recurrenceRules ?? this.recurrenceRules,
+      excludedCalendarEvents: excludedCalendarEvents ?? this.excludedCalendarEvents,
+    );
+  }
 }

test/features/email/data/repository/calendar_event_repository_impl_test.dart

@@ -9,17 +9,25 @@ import 'package:jmap_dart_client/jmap/mail/calendar/reply/calendar_event_reject_
 import 'package:mockito/annotations.dart';
 import 'package:mockito/mockito.dart';
 import 'package:tmail_ui_user/features/email/data/datasource/calendar_event_datasource.dart';
+import 'package:tmail_ui_user/features/email/data/datasource/html_datasource.dart';
 import 'package:tmail_ui_user/features/email/data/repository/calendar_event_repository_impl.dart';
 import 'package:tmail_ui_user/features/email/domain/exceptions/calendar_event_exceptions.dart';
 
 import 'calendar_event_repository_impl_test.mocks.dart';
 
-@GenerateNiceMocks([MockSpec<CalendarEventDataSource>()])
+@GenerateNiceMocks([
+  MockSpec<CalendarEventDataSource>(),
+  MockSpec<HtmlDataSource>(),
+])
 void main() {
   final calendarEventNetworkDataSource = MockCalendarEventDataSource();
+  final htmlDatasource = MockHtmlDataSource();
   final calendarEventDataSource = {
     DataSourceType.network: calendarEventNetworkDataSource};
-  final calendarEventRepository = CalendarEventRepositoryImpl(calendarEventDataSource);
+  final calendarEventRepository = CalendarEventRepositoryImpl(
+    calendarEventDataSource,
+    htmlDatasource,
+  );
   final accountId = AccountId(Id('123'));
   final blobId = Id('blobId');
   const language = 'en';

test/features/email/presentation/controller/single_email_controller_test.dart

@@ -1,3 +1,4 @@
+import 'dart:convert';
 import 'dart:ui';
 
 import 'package:core/core.dart';
@@ -18,7 +19,12 @@ import 'package:jmap_dart_client/jmap/mail/calendar/reply/calendar_event_accept_
 import 'package:jmap_dart_client/jmap/mail/email/email.dart';
 import 'package:mockito/annotations.dart';
 import 'package:mockito/mockito.dart';
+import 'package:model/email/presentation_email.dart';
 import 'package:tmail_ui_user/features/caching/caching_manager.dart';
+import 'package:tmail_ui_user/features/email/data/datasource/calendar_event_datasource.dart';
+import 'package:tmail_ui_user/features/email/data/datasource_impl/html_datasource_impl.dart';
+import 'package:tmail_ui_user/features/email/data/local/html_analyzer.dart';
+import 'package:tmail_ui_user/features/email/data/repository/calendar_event_repository_impl.dart';
 import 'package:tmail_ui_user/features/email/domain/model/event_action.dart';
 import 'package:tmail_ui_user/features/email/domain/state/calendar_event_accept_state.dart';
 import 'package:tmail_ui_user/features/email/domain/state/parse_calendar_event_state.dart';
@@ -32,9 +38,11 @@ import 'package:tmail_ui_user/features/email/domain/usecases/get_email_content_i
 import 'package:tmail_ui_user/features/email/domain/usecases/mark_as_email_read_interactor.dart';
 import 'package:tmail_ui_user/features/email/domain/usecases/mark_as_star_email_interactor.dart';
 import 'package:tmail_ui_user/features/email/domain/usecases/move_to_mailbox_interactor.dart';
+import 'package:tmail_ui_user/features/email/domain/usecases/parse_calendar_event_interactor.dart';
 import 'package:tmail_ui_user/features/email/domain/usecases/print_email_interactor.dart';
 import 'package:tmail_ui_user/features/email/domain/usecases/store_event_attendance_status_interactor.dart';
 import 'package:tmail_ui_user/features/email/domain/usecases/store_opened_email_interactor.dart';
+import 'package:tmail_ui_user/features/email/presentation/action/email_ui_action.dart';
 import 'package:tmail_ui_user/features/email/presentation/controller/email_supervisor_controller.dart';
 import 'package:tmail_ui_user/features/email/presentation/controller/single_email_controller.dart';
 import 'package:tmail_ui_user/features/email/presentation/model/blob_calendar_event.dart';
@@ -46,9 +54,11 @@ import 'package:tmail_ui_user/features/manage_account/data/local/language_cache_
 import 'package:tmail_ui_user/features/manage_account/domain/usecases/get_all_identities_interactor.dart';
 import 'package:tmail_ui_user/features/manage_account/domain/usecases/log_out_oidc_interactor.dart';
 import 'package:tmail_ui_user/main/bindings/network/binding_tag.dart';
+import 'package:tmail_ui_user/main/exceptions/cache_exception_thrower.dart';
 import 'package:tmail_ui_user/main/utils/toast_manager.dart';
 import 'package:uuid/uuid.dart';
 
+import '../../../../fixtures/account_fixtures.dart';
 import '../../../../fixtures/email_fixtures.dart';
 import 'single_email_controller_test.mocks.dart';
 
@@ -91,6 +101,8 @@ const fallbackGenerators = {
   MockSpec<PrintUtils>(),
   MockSpec<ApplicationManager>(),
   MockSpec<ToastManager>(),
+  MockSpec<CalendarEventDataSource>(),
+  MockSpec<DioClient>(),
 ])
 void main() {
   TestWidgetsFlutterBinding.ensureInitialized();
@@ -363,4 +375,137 @@ void main() {
       debugDefaultTargetPlatformOverride = null;
     });
   });
+
+  group('_parseCalendarEventAction method test:', () {
+    final calendarEventDataSource = MockCalendarEventDataSource();
+    final calendarEventRepository = CalendarEventRepositoryImpl(
+      {DataSourceType.network :calendarEventDataSource},
+      HtmlDataSourceImpl(
+        HtmlAnalyzer(HtmlTransform(
+          MockDioClient(),
+          const HtmlEscape(),
+        )),
+        CacheExceptionThrower(),
+      ),
+    );
+
+    setUp(() {
+      Get.put(ParseCalendarEventInteractor(calendarEventRepository));
+    });
+
+    tearDown(() {
+      Get.delete<ParseCalendarEventInteractor>();
+    });
+
+    test(
+      'should transform all calendar event description url to a tag '
+      'and all new line to <br> tag',
+    () async {
+      // arrange
+      const eventDescription = '\nhttps://example1.com\nhttps://example2.com';
+      const expectedEventDescription = '<html><head></head><body>'
+        '<br>'
+        '<a href="https://example1.com" target="_blank" rel="noreferrer">example1.com</a>'
+        '<br>'
+        '<a href="https://example2.com" target="_blank" rel="noreferrer">example2.com</a>'
+        '</body></html>';
+      final blobId = Id('abc123');
+      final calendarEvent = CalendarEvent(
+        description: eventDescription,
+      );
+      final blobCalendarEvents = [
+        BlobCalendarEvent(
+          blobId: blobId,
+          calendarEventList: [calendarEvent],
+        ),
+      ];
+      when(calendarEventDataSource.parse(any, any))
+        .thenAnswer((_) async => blobCalendarEvents);
+
+      when(mailboxDashboardController.selectedEmail).thenReturn(Rxn(PresentationEmail()));
+      when(mailboxDashboardController.emailUIAction).thenReturn(Rxn(EmailUIAction()));
+      when(mailboxDashboardController.viewState).thenReturn(Rx(Right(UIState.idle)));
+      when(mailboxDashboardController.accountId).thenReturn(Rxn(AccountFixtures.aliceAccountId));
+      when(emailSupervisorController.scrollPhysicsPageView).thenReturn(Rxn());
+
+      singleEmailController.onInit();
+      mailboxDashboardController.accountId.refresh();
+      
+      // act
+      singleEmailController.parseCalendarEventAction(
+        accountId: AccountFixtures.aliceAccountId,
+        blobIds: {blobId},
+      );
+      await untilCalled(calendarEventDataSource.parse(any, any));
+      await Future.delayed(Duration.zero);
+      
+      // assert
+      expect(
+        singleEmailController.blobCalendarEvent.value,
+        BlobCalendarEvent(
+          blobId: blobId,
+          calendarEventList: [CalendarEvent(description: expectedEventDescription)],
+        ),
+      );
+    });
+
+    test(
+      'should transform all calendar event description url to a tag '
+      'and all new line to <br> tag '
+      'and remove all xss attempt',
+    () async {
+      // arrange
+      const eventDescription = '\nhttps://example1.com'
+        '\nhttps://example2.com'
+        '\n<script>alert(1)</script>'
+        '\n<a href="javascript:alert(1)">href xss</a>';
+      const expectedEventDescription = '<html><head></head><body>'
+        '<br>'
+        '<a href="https://example1.com" target="_blank" rel="noreferrer">example1.com</a>'
+        '<br>'
+        '<a href="https://example2.com" target="_blank" rel="noreferrer">example2.com</a>'
+        '<br>'
+        '<br>'
+        '<a>href xss</a>'
+        '</body></html>';
+      final blobId = Id('abc123');
+      final calendarEvent = CalendarEvent(
+        description: eventDescription,
+      );
+      final blobCalendarEvents = [
+        BlobCalendarEvent(
+          blobId: blobId,
+          calendarEventList: [calendarEvent],
+        ),
+      ];
+      when(calendarEventDataSource.parse(any, any))
+        .thenAnswer((_) async => blobCalendarEvents);
+
+      when(mailboxDashboardController.selectedEmail).thenReturn(Rxn(PresentationEmail()));
+      when(mailboxDashboardController.emailUIAction).thenReturn(Rxn(EmailUIAction()));
+      when(mailboxDashboardController.viewState).thenReturn(Rx(Right(UIState.idle)));
+      when(mailboxDashboardController.accountId).thenReturn(Rxn(AccountFixtures.aliceAccountId));
+      when(emailSupervisorController.scrollPhysicsPageView).thenReturn(Rxn());
+
+      singleEmailController.onInit();
+      mailboxDashboardController.accountId.refresh();
+      
+      // act
+      singleEmailController.parseCalendarEventAction(
+        accountId: AccountFixtures.aliceAccountId,
+        blobIds: {blobId},
+      );
+      await untilCalled(calendarEventDataSource.parse(any, any));
+      await Future.delayed(Duration.zero);
+      
+      // assert
+      expect(
+        singleEmailController.blobCalendarEvent.value,
+        BlobCalendarEvent(
+          blobId: blobId,
+          calendarEventList: [CalendarEvent(description: expectedEventDescription)],
+        ),
+      );
+    });
+  });
 }