Исправлен механизм прочтения сообщений

backend/src/Modules/Conversations/Application/Messages/GetMessages/GetMessagesQuery.cs

@@ -159,7 +159,7 @@ internal sealed class GetMessagesQueryHandler : IQueryHandler<GetMessagesQuery,
                 (message as StoryMessage)?.StoryMediaType,
                 (message as MediaMessage)?.Media.Select(m => new MediaDto(m.Id, m.Type, m.Url, m.Filename, m.Size, m.Duration)).ToList() ?? new List<MediaDto>(),
                 sender != null ? new MessageSenderDto(sender.Id, sender.Username, sender.DisplayName, sender.Avatar) : new MessageSenderDto(message.SenderId, "unknown", "Unknown", null),
-                new List<ReadByDto>(), // ReadBy not implemented in this detailed view yet
+                message.ReadByUsers.Select(id => new ReadByDto(id)).ToList(),
                 reactions?.Select(r =>
                 {
                     senders.TryGetValue(r.UserId, out var ru);

backend/src/Modules/Conversations/Application/Messages/Read/ReadMessagesCommandHandler.cs

@@ -1,7 +1,8 @@
-using MediatR;
-using Knot.Contracts.Conversations.Domain;
-using Knot.Shared.Kernel;
 using Knot.Contracts.Conversations.Application.Abstractions;
+using Knot.Contracts.Conversations.Domain;
+using Knot.Contracts.Messaging.Application.Abstractions;
+using Knot.Shared.Kernel;
+using MediatR;
 
 namespace Knot.Modules.Conversations.Application.Messages.Read;
 
@@ -11,11 +12,13 @@ public sealed class ReadMessagesCommandHandler : ICommandHandler<ReadMessagesCom
 {
     private readonly IChatRepository _chatRepository;
     private readonly IChatsUnitOfWork _unitOfWork;
+    private readonly IMessageRepository _messageRepository;
 
-    public ReadMessagesCommandHandler(IChatRepository chatRepository, IChatsUnitOfWork unitOfWork)
+    public ReadMessagesCommandHandler(IChatRepository chatRepository, IChatsUnitOfWork unitOfWork, IMessageRepository messageRepository)
     {
         _chatRepository = chatRepository;
         _unitOfWork = unitOfWork;
+        _messageRepository = messageRepository;
     }
 
     public async Task<Result> Handle(ReadMessagesCommand request, CancellationToken cancellationToken)
@@ -28,6 +31,23 @@ public sealed class ReadMessagesCommandHandler : ICommandHandler<ReadMessagesCom
 
         member.UpdateReadCursor(request.LastReadMessageId, request.LastReadSequenceId);
 
+        // Обновляем ReadByUsers для всех сообщений до LastReadSequenceId
+        var messages = await _messageRepository.GetChatMessagesAfterAsync(
+            request.ChatId,
+            0,
+            1000,
+            cancellationToken);
+
+        foreach (var message in messages)
+        {
+            if (message.SequenceId <= request.LastReadSequenceId &&
+                message.SenderId != request.UserId &&
+                !message.IsReadBy(request.UserId))
+            {
+                message.MarkAsRead(request.UserId);
+            }
+        }
+
         await _unitOfWork.SaveChangesAsync(cancellationToken);
 
         return Result.Success();

backend/src/Modules/Conversations/Application/Messages/SearchMessages/SearchMessagesQuery.cs

@@ -3,10 +3,10 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
+using Knot.Contracts.Conversations.Domain;
 using Knot.Contracts.Messaging.Application.Abstractions;
 using Knot.Contracts.Messaging.Domain;
 using Knot.Modules.Conversations.Application.DTOs;
-using Knot.Contracts.Conversations.Domain;
 using Knot.Shared.Kernel;
 using MediatR;
 
@@ -41,7 +41,8 @@ internal sealed class SearchMessagesQueryHandler : IQueryHandler<SearchMessagesQ
         var allReactions = await _reactionRepository.GetReactionsForMessagesAsync(messageIds, cancellationToken);
         var reactionsByMessage = allReactions.GroupBy(r => r.MessageId).ToDictionary(g => g.Key, g => g.ToList());
 
-        var result = messages.Select(message => {
+        var result = messages.Select(message =>
+        {
             var textMessage = message as TextMessage;
             var mediaMessage = message as MediaMessage;
             var storyMessage = message as StoryMessage;
@@ -66,7 +67,7 @@ internal sealed class SearchMessagesQueryHandler : IQueryHandler<SearchMessagesQ
                 mediaMessage?.Media.Select(media => new MediaDto(media.Id, media.Type, media.Url, media.Filename, media.Size)).ToList() ?? new List<MediaDto>(),
                 senders.TryGetValue(message.SenderId, out var senderUser) ? new MessageSenderDto(senderUser.Id, senderUser.Username, senderUser.DisplayName, senderUser.Avatar) : new MessageSenderDto(message.SenderId, "unknown", "Unknown", null),
                 reactionsByMessage.TryGetValue(message.Id, out var mr) ? mr.Select(reaction => new SimpleReactionDto(reaction.UserId, reaction.Emoji)).ToList() : new List<SimpleReactionDto>(),
-                new List<ReadByDto>()
+                message.ReadByUsers.Select(id => new ReadByDto(id)).ToList()
             );
         }).ToList();
 

backend/src/Modules/Conversations/Application/Messages/Send/SendMessageCommandHandler.cs

@@ -1,8 +1,8 @@
+using Knot.Contracts.Conversations.Application.Abstractions;
+using Knot.Contracts.Conversations.Domain;
 using Knot.Contracts.Messaging.Application.Abstractions;
 using Knot.Contracts.Messaging.Domain;
 using Knot.Contracts.Settings.Application.Abstractions;
-using Knot.Contracts.Conversations.Application.Abstractions;
-using Knot.Contracts.Conversations.Domain;
 using Knot.Shared.Kernel;
 
 namespace Knot.Modules.Conversations.Application.Messages.Send;
@@ -192,6 +192,7 @@ public sealed class SendMessageCommandHandler : ICommandHandler<SendMessageComma
         var senderMember = chat.Members.First(m => m.UserId == request.SenderId);
         senderMember.UpdateReadCursor(message.Id, message.SequenceId);
         senderMember.UpdateDeliveredCursor(message.Id);
+        message.MarkAsRead(request.SenderId); // Отправитель всегда "прочитал" своё сообщение
 
         // 5. <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
         _messageRepository.Add(message);