TF-3267 Implement HTML attachment preview

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

@@ -8,6 +8,7 @@ import 'package:core/presentation/utils/html_transformer/text/sanitize_autolink_
 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:core/utils/html/html_utils.dart';
+import 'package:core/presentation/utils/html_transformer/dom/sanitize_hyper_link_tag_in_html_transformers.dart';
 import 'package:dartz/dartz.dart';
 import 'package:dio/dio.dart';
 import 'package:flutter/cupertino.dart';
@@ -58,6 +59,7 @@ import 'package:tmail_ui_user/features/email/domain/state/download_attachment_fo
 import 'package:tmail_ui_user/features/email/domain/state/download_attachments_state.dart';
 import 'package:tmail_ui_user/features/email/domain/state/export_attachment_state.dart';
 import 'package:tmail_ui_user/features/email/domain/state/get_email_content_state.dart';
+import 'package:tmail_ui_user/features/email/domain/state/get_html_content_from_attachment_state.dart';
 import 'package:tmail_ui_user/features/email/domain/state/mark_as_email_read_state.dart';
 import 'package:tmail_ui_user/features/email/domain/state/mark_as_email_star_state.dart';
 import 'package:tmail_ui_user/features/email/domain/state/move_to_mailbox_state.dart';
@@ -82,6 +84,7 @@ import 'package:tmail_ui_user/features/email/domain/usecases/parse_calendar_even
 import 'package:tmail_ui_user/features/email/domain/usecases/parse_email_by_blob_id_interactor.dart';
 import 'package:tmail_ui_user/features/email/domain/usecases/preview_email_from_eml_file_interactor.dart';
 import 'package:tmail_ui_user/features/email/domain/usecases/print_email_interactor.dart';
+import 'package:tmail_ui_user/features/email/domain/usecases/get_html_content_from_attachment_interactor.dart';
 import 'package:tmail_ui_user/features/email/domain/usecases/send_receipt_to_sender_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';
@@ -99,6 +102,7 @@ import 'package:tmail_ui_user/features/email/presentation/widgets/attachment_lis
 import 'package:tmail_ui_user/features/email/presentation/widgets/attachment_list/attachment_list_dialog_builder.dart';
 import 'package:tmail_ui_user/features/email/presentation/widgets/email_address_bottom_sheet_builder.dart';
 import 'package:tmail_ui_user/features/email/presentation/widgets/email_address_dialog_builder.dart';
+import 'package:tmail_ui_user/features/email/presentation/widgets/html_attachment_previewer.dart';
 import 'package:tmail_ui_user/features/email/presentation/widgets/pdf_viewer/pdf_viewer.dart';
 import 'package:tmail_ui_user/features/email_previewer/email_previewer_dialog_view.dart';
 import 'package:tmail_ui_user/features/home/data/exceptions/session_exceptions.dart';
@@ -149,6 +153,7 @@ class SingleEmailController extends BaseController with AppLoaderMixin {
   final StoreEventAttendanceStatusInteractor _storeEventAttendanceStatusInteractor;
   final ParseEmailByBlobIdInteractor _parseEmailByBlobIdInteractor;
   final PreviewEmailFromEmlFileInteractor _previewEmailFromEmlFileInteractor;
+  final GetHtmlContentFromAttachmentInteractor _getHtmlContentFromAttachmentInteractor;
 
   CreateNewEmailRuleFilterInteractor? _createNewEmailRuleFilterInteractor;
   SendReceiptToSenderInteractor? _sendReceiptToSenderInteractor;
@@ -204,6 +209,7 @@ class SingleEmailController extends BaseController with AppLoaderMixin {
     this._storeEventAttendanceStatusInteractor,
     this._parseEmailByBlobIdInteractor,
     this._previewEmailFromEmlFileInteractor,
+    this._getHtmlContentFromAttachmentInteractor,
   );
 
   @override
@@ -263,6 +269,19 @@ class SingleEmailController extends BaseController with AppLoaderMixin {
       _handleParseEmailByBlobIdSuccess(success);
     } else if (success is PreviewEmailFromEmlFileSuccess) {
       _handlePreviewEmailFromEMLFileSuccess(success);
+    } else if (success is GetHtmlContentFromAttachmentSuccess) {
+      _updateAttachmentsViewState(success.attachment.blobId, Right(success));
+      Get.dialog(HtmlAttachmentPreviewer(
+        title: success.htmlAttachmentTitle,
+        htmlContent: success.sanitizedHtmlContent,
+        mailToClicked: openMailToLink,
+        downloadAttachmentClicked: () {
+          downloadAttachmentForWeb(success.attachment);
+        },
+        responsiveUtils: responsiveUtils,
+      ));
+    } else if (success is GettingHtmlContentFromAttachment) {
+      _updateAttachmentsViewState(success.attachment.blobId, Right(success));
     }
   }
 
@@ -290,6 +309,8 @@ class SingleEmailController extends BaseController with AppLoaderMixin {
       _handleParseEmailByBlobIdFailure(failure);
     } else if (failure is PreviewEmailFromEmlFileFailure) {
       _handlePreviewEmailFromEMLFileFailure(failure);
+    } else if (failure is GetHtmlContentFromAttachmentFailure) {
+      _handleGetHtmlContentFromAttachmentFailure(failure);
     }
   }
 
@@ -1155,7 +1176,7 @@ class SingleEmailController extends BaseController with AppLoaderMixin {
       KeyWordIdentifier.emailFlagged: success.markStarAction == MarkStarAction.markStar,
     });
     mailboxDashBoardController.setSelectedEmail(newEmail);
-    
+
     final emailId = newEmail?.id;
     if (emailId == null) return;
     mailboxDashBoardController.updateEmailFlagByEmailIds(
@@ -1932,11 +1953,61 @@ class SingleEmailController extends BaseController with AppLoaderMixin {
       previewPDFFileAction(context, attachment);
     } else if (attachment.isEMLFile) {
       previewEMLFileAction(attachment.blobId, AppLocalizations.of(context));
-    } else {
+    } else if (attachment.isHTMLFile) {
+      final attachmentEvaluation = evaluateAttachment(attachment);
+      if (!attachmentEvaluation.canDownloadAttachment) {
+        consumeState(Stream.value(Left(GetHtmlContentFromAttachmentFailure(
+          exception: null,
+          attachment: attachment,
+        ))));
+        return;
+      }
+
+      consumeState(_getHtmlContentFromAttachmentInteractor.execute(
+        attachmentEvaluation.accountId!,
+        attachment,
+        DownloadTaskId(attachmentEvaluation.blobId!.value),
+        attachmentEvaluation.downloadUrl!,
+        TransformConfiguration.create(
+          customDomTransformers: [SanitizeHyperLinkTagInHtmlTransformer()],
+          customTextTransformers: [const StandardizeHtmlSanitizingTransformers()],
+        ),
+      ));
+    }else {
       handleDownloadAttachmentAction(context, attachment);
     }
   }
 
+  ({
+    bool canDownloadAttachment,
+    AccountId? accountId,
+    String? downloadUrl,
+    Id? blobId,
+  }) evaluateAttachment(
+    Attachment attachment,
+  ) {
+    final accountId = mailboxDashBoardController.accountId.value;
+    final downloadUrl = mailboxDashBoardController.sessionCurrent
+        ?.getDownloadUrl(jmapUrl: dynamicUrlInterceptors.jmapUrl);
+    final blobId = attachment.blobId;
+
+    if (accountId == null || downloadUrl == null || blobId == null) {
+      return (
+        canDownloadAttachment: false,
+        accountId: accountId,
+        downloadUrl: downloadUrl,
+        blobId: blobId,
+      );
+    }
+
+    return (
+      canDownloadAttachment: true,
+      accountId: accountId,
+      downloadUrl: downloadUrl,
+      blobId: blobId,
+    );
+  }
+
   Future<void> previewPDFFileAction(BuildContext context, Attachment attachment) async {
     if (accountId == null || session == null) {
       appToast.showToastErrorMessage(
@@ -2121,4 +2192,13 @@ class SingleEmailController extends BaseController with AppLoaderMixin {
       ComposerArguments.fromMailtoUri(listEmailAddress: listEmailAddressMailTo)
     );
   }
+
+  void _handleGetHtmlContentFromAttachmentFailure(GetHtmlContentFromAttachmentFailure failure) {
+    _updateAttachmentsViewState(failure.attachment.blobId, Left(failure));
+    if (currentOverlayContext != null && currentContext != null) {
+      appToast.showToastErrorMessage(
+        currentOverlayContext!,
+        AppLocalizations.of(currentContext!).thisHtmlAttachmentCannotBePreviewed);
+    }
+  }
 }