TF-3369 Fix cid image without disposition (#3373)

docs/adr/0038-logic-for-displaying-attachment-types-in-emails.md

@@ -24,8 +24,11 @@ Brief the logic flows to make it easier to track changes during `attachment` dis
 2. Inline attachments: Displayed within the email body
 
 - Display is only allowed when the following conditions are met:
-  - `cid is not NULL` AND `disposition = 'inline'`
+  - `cid is not NULL` AND `disposition = 'inline' || disposition = NULL`
 
 ## Consequences
 
 - Any changes to attachment display while reading emails should be updated in this ADR.
+
+## References
+- [rfc2392](https://datatracker.ietf.org/doc/html/rfc2392)

integration_test/robots/thread_robot.dart

@@ -19,4 +19,15 @@ class ThreadRobot extends CoreRobot {
   Future<void> tapOnSearchField() async {
     await $(ThreadView).$(SearchBarView).tap();
   }
+
+  Future<void> openMailbox(String mailboxName) async {
+    await $(#mobile_mailbox_menu_button).tap();
+    await $.scrollUntilVisible(finder: $(mailboxName));
+    await $(mailboxName).tap();
+  }
+
+  Future<void> openEmailWithSubject(String subject) async {
+    await $.scrollUntilVisible(finder: $(subject));
+    await $(subject).tap();
+  }
 }

integration_test/scenarios/no_disposition_inline_scenario.dart

@@ -0,0 +1,43 @@
+import 'package:core/presentation/views/html_viewer/html_content_viewer_widget.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:tmail_ui_user/features/email/presentation/email_view.dart';
+
+import '../base/base_scenario.dart';
+import '../robots/search_robot.dart';
+import '../robots/thread_robot.dart';
+import 'login_with_basic_auth_scenario.dart';
+
+class NoDispositionInlineScenario extends BaseScenario {
+  NoDispositionInlineScenario(
+    super.$, {
+    required this.loginWithBasicAuthScenario,
+  });
+
+  final LoginWithBasicAuthScenario loginWithBasicAuthScenario;
+
+  @override
+  Future<void> execute() async {
+    final threadRobot = ThreadRobot($);
+    final searchRobot = SearchRobot($);
+    
+    await loginWithBasicAuthScenario.execute();
+
+    await threadRobot.openSearchView();
+    await searchRobot.enterQueryString('Greeting Card');
+    await $.pumpAndTrySettle();
+    await threadRobot.openEmailWithSubject('Greeting');
+    await $.pumpAndTrySettle();
+    _expectEmailViewWithBase64Image(_base64);
+  }
+
+  void _expectEmailViewWithBase64Image(String base64) {
+    expect(
+      $(EmailView)
+        .$(HtmlContentViewer)
+        .which<HtmlContentViewer>((view) => view.contentHtml.contains(base64)),
+      findsOneWidget,
+    );
+  }
+
+  static const _base64 = '''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''';
+}

integration_test/tests/attachments/no_disposition_inline_test.dart

@@ -0,0 +1,23 @@
+import '../../base/test_base.dart';
+import '../../scenarios/login_with_basic_auth_scenario.dart';
+import '../../scenarios/no_disposition_inline_scenario.dart';
+
+void main() {
+  TestBase().runPatrolTest(
+    description: 'Should see base64 inline image when attachment has no disposition but has cid',
+    test: ($) async {
+      final loginWithBasicAuthScenario = LoginWithBasicAuthScenario($,
+        username: const String.fromEnvironment('USERNAME'),
+        hostUrl: const String.fromEnvironment('BASIC_AUTH_URL'),
+        email: const String.fromEnvironment('BASIC_AUTH_EMAIL'),
+        password: const String.fromEnvironment('PASSWORD'),
+      );
+
+      final noDispositionInlineScenario = NoDispositionInlineScenario($,
+        loginWithBasicAuthScenario: loginWithBasicAuthScenario,
+      );
+
+      await noDispositionInlineScenario.execute();
+    }
+  );
+}

model/lib/email/attachment.dart

@@ -39,6 +39,8 @@ class Attachment with EquatableMixin {
 
   bool isDispositionInlined() => disposition == ContentDisposition.inline;
 
+  bool isDispositionUndefined() => disposition == null;
+
   bool isApplicationRTFInlined() => type?.mimeType == applicationRTFType && isDispositionInlined();
 
   String getDownloadUrl(String baseDownloadUrl, AccountId accountId) {

model/lib/extensions/list_attachment_extension.dart

@@ -25,7 +25,7 @@ extension ListAttachmentExtension on List<Attachment> {
   }
 
   List<Attachment> get listAttachmentsDisplayedInContent =>
-    where((attachment) => attachment.hasCid() && attachment.isDispositionInlined())
+    where((attachment) => attachment.hasCid() && (attachment.isDispositionInlined() || attachment.isDispositionUndefined()))
     .toList();
 
   Map<String, String> toMapCidImageDownloadUrl({

provisioning/integration_test/provisioning.sh

@@ -2,7 +2,7 @@
 
 # Define users and folders
 users=("alice" "bob" "brian" "charlotte" "david" "emma")
-bobFolders=("Search Emails" "Forward Emails")
+bobFolders=("Search Emails" "Forward Emails" "Disposition")
 
 # Add users
 for user in "${users[@]}"; do
@@ -25,4 +25,9 @@ done
 # For test forward email
 # Import emails into 'Forward Emails' folder for user Bob
 echo "Importing 0.eml into 'Forward Emails' folder for user bob"
-james-cli ImportEml \#private "bob@example.com" "Forward Emails" "/root/conf/integration_test/eml/forward_email/0.eml"
+james-cli ImportEml \#private "bob@example.com" "Forward Emails" "/root/conf/integration_test/eml/forward_email/0.eml"
+
+# For test email with no-disposition inline image
+# Import email into 'Disposition' folder for user Bob
+echo "Importing no_disposition_inline.eml into 'Disposition' folder for user bob"
+james-cli ImportEml \#private "bob@example.com" "Disposition" "/root/conf/integration_test/eml/no_disposition_inline/no_disposition_inline.eml"