feat(ui): Display warnings for messages

lib/service/database/creation.dart

@@ -21,6 +21,7 @@ Future<void> createDatabase(Database db, int version) async {
       isFileUploadNotification INTEGER NOT NULL,
       encrypted INTEGER NOT NULL,
       errorType INTEGER,
+      warningType INTEGER,
       mediaUrl TEXT,
       mediaType TEXT,
       thumbnailData TEXT,

lib/service/database/database.dart

@@ -260,6 +260,7 @@ class DatabaseService {
       String? quoteId,
       String? filename,
       int? errorType,
+      int? warningType,
       Map<String, String>? plaintextHashes,
       Map<String, String>? ciphertextHashes,
     }
@@ -275,6 +276,7 @@ class DatabaseService {
       isFileUploadNotification,
       encrypted,
       errorType: errorType,
+      warningType: warningType,
       mediaUrl: mediaUrl,
       key: key,
       iv: iv,
@@ -345,6 +347,7 @@ class DatabaseService {
     bool? displayed,
     bool? acked,
     int? errorType,
+    int? warningType,
     bool? isFileUploadNotification,
     String? srcUrl,
     String? key,
@@ -379,6 +382,9 @@ class DatabaseService {
     if (errorType != null) {
       m['errorType'] = errorType;
     }
+    if (warningType != null) {
+      m['warningType'] = warningType;
+    }
     if (isFileUploadNotification != null) {
       m['isFileUploadNotification'] = boolToInt(isFileUploadNotification);
     }

lib/service/httpfiletransfer/httpfiletransfer.dart

@@ -24,6 +24,7 @@ import 'package:moxxyv2/service/service.dart';
 import 'package:moxxyv2/shared/error_types.dart';
 import 'package:moxxyv2/shared/events.dart';
 import 'package:moxxyv2/shared/models/media.dart';
+import 'package:moxxyv2/shared/warning_types.dart';
 import 'package:moxxyv2/xmpp/connection.dart';
 import 'package:moxxyv2/xmpp/managers/namespaces.dart';
 import 'package:moxxyv2/xmpp/message.dart';
@@ -361,6 +362,7 @@ class HttpFileTransferService {
       // TODO(PapaTutuWawa): Trigger event
       _log.warning('HTTP GET of ${job.location.url} returned ${response?.statusCode}');
     } else {
+      var integrityCheckPassed = true;
       if (job.location.key != null && job.location.iv != null) {
         // The file was encrypted
         final result = await GetIt.I.get<CryptographyService>().decryptFile(
@@ -387,6 +389,8 @@ class HttpFileTransferService {
           return;
         }
 
+        integrityCheckPassed = result.plaintextOkay && result.ciphertextOkay;
+
         // TODO(PapaTutuWawa): Calculate the file's hash and compare to the provided ones
         // Cleanup the temporary file
         unawaited(Directory(pathlib.dirname(downloadPath)).delete(recursive: true));
@@ -422,6 +426,9 @@ class HttpFileTransferService {
         mediaWidth: mediaWidth,
         mediaHeight: mediaHeight,
         isFileUploadNotification: false,
+        warningType: integrityCheckPassed ?
+          warningFileIntegrityCheckFailed :
+          null,
       );
 
       sendEvent(MessageUpdatedEvent(message: msg.copyWith(isDownloading: false)));

lib/service/message.dart

@@ -51,6 +51,7 @@ class MessageService {
       String? quoteId,
       String? filename,
       int? errorType,
+      int? warningType,
       Map<String, String>? plaintextHashes,
       Map<String, String>? ciphertextHashes,
     }
@@ -77,6 +78,7 @@ class MessageService {
       quoteId: quoteId,
       filename: filename,
       errorType: errorType,
+      warningType: warningType,
       plaintextHashes: plaintextHashes,
       ciphertextHashes: ciphertextHashes,
     );
@@ -109,6 +111,7 @@ class MessageService {
     bool? displayed,
     bool? acked,
     int? errorType,
+    int? warningType,
     bool? isFileUploadNotification,
     String? srcUrl,
     String? key,
@@ -125,6 +128,7 @@ class MessageService {
       displayed: displayed,
       acked: acked,
       errorType: errorType,
+      warningType: warningType,
       isFileUploadNotification: isFileUploadNotification,
       srcUrl: srcUrl,
       key: key,

lib/shared/models/message.dart

@@ -2,6 +2,7 @@ import 'dart:convert';
 import 'package:freezed_annotation/freezed_annotation.dart';
 import 'package:moxxyv2/service/database/helpers.dart';
 import 'package:moxxyv2/shared/error_types.dart';
+import 'package:moxxyv2/shared/warning_types.dart';
 
 part 'message.freezed.dart';
 part 'message.g.dart';
@@ -36,6 +37,7 @@ class Message with _$Message {
     bool encrypted,
     {
       int? errorType,
+      int? warningType,
       String? mediaUrl,
       @Default(false) bool isDownloading,
       @Default(false) bool isUploading,
@@ -102,4 +104,9 @@ class Message with _$Message {
   bool isError() {
     return errorType != null && errorType != noError;
   }
+
+  /// Returns true if the message is a warning. If not, then returns false.
+  bool isWarning() {
+    return warningType != null && warningType != noWarning;
+  }
 }

lib/shared/warning_types.dart

@@ -0,0 +1,2 @@
+const noWarning = 0;
+const warningFileIntegrityCheckFailed = 1;

lib/ui/widgets/chat/bottom.dart

@@ -105,6 +105,16 @@ class MessageBubbleBottomState extends State<MessageBubbleBottom> {
             ),
           ),
         ] : [],
+        ...widget.message.isWarning() ? [
+          const Padding(
+            padding: EdgeInsets.only(left: 3),
+            child: Icon(
+              Icons.warning,
+              size: _bubbleBottomIconSize,
+              color: Colors.yellow,
+            ),
+          ),
+        ] : [],
         ..._showCheckmark() ? [
             const Padding(
               padding: EdgeInsets.only(left: 3),