Add read receipts and editing limits

Introduced message read tracking with a dedicated MessageReadingService, SignalR read request/response contracts, and hub notification flow for read receipts. Added configurable message edit constraints through MessageEditingOptions and a shared INowDateTimeProvider so timestamps are consistent across the app. Also fixed recipient validation in message removal and improved push token upsert behavior by matching the correct user/session record.

Govor.Application/Messages/MessageEditingService.cs

@@ -3,18 +3,24 @@ using Microsoft.EntityFrameworkCore;
 using Govor.Domain;
 using Govor.Domain.Models.Messages;
 using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
 
 namespace Govor.Application.Messages;
 
 public class MessageEditingService : IMessageEditingService
 {
-    private readonly GovorDbContext _dbContext;
+     private readonly GovorDbContext _dbContext;
     private readonly ILogger<MessageEditingService> _logger;
+    private readonly MessageEditingOptions _options;
 
-    public MessageEditingService(GovorDbContext dbContext, ILogger<MessageEditingService> logger)
+    public MessageEditingService(
+        GovorDbContext dbContext,
+        ILogger<MessageEditingService> logger,
+        IOptions<MessageEditingOptions> options)
     {
         _dbContext = dbContext;
         _logger = logger;
+        _options = options.Value;
     }
 
     public async Task<EditMessageResult> EditMessageAsync(EditMessage editParams)
@@ -25,15 +31,47 @@ public class MessageEditingService : IMessageEditingService
 
         if (message == null)
         {
-            return new EditMessageResult(false, new KeyNotFoundException("Message not found."), null);
+            return new EditMessageResult(
+                false,
+                new KeyNotFoundException("Message not found."),
+                null);
         }
-        
+
         if (message.SenderId != editParams.EditorId)
         {
-            _logger.LogWarning("User {EditorId} unauthorized to edit message {MessageId}", editParams.EditorId, editParams.MessageId);
-            return new EditMessageResult(false, new UnauthorizedAccessException("User is not authorized to edit this message."), null);
+            _logger.LogWarning(
+                "User {EditorId} unauthorized to edit message {MessageId}",
+                editParams.EditorId,
+                editParams.MessageId);
+
+            return new EditMessageResult(
+                false,
+                new UnauthorizedAccessException(
+                    "User is not authorized to edit this message."),
+                null);
         }
-        
+
+        // Проверяем время, прошедшее с момента отправки
+        var now = DateTime.UtcNow;
+        var editDeadline = message.SentAt.AddMinutes(
+            _options.MaxEditTimeMinutes);
+
+        if (now > editDeadline && _options.Enabled)
+        {
+            _logger.LogWarning(
+                "Message {MessageId} cannot be edited. " +
+                "Edit time limit of {MaxEditTimeMinutes} minutes has expired.",
+                message.Id,
+                _options.MaxEditTimeMinutes);
+
+            return new EditMessageResult(
+                false,
+                new InvalidOperationException(
+                    $"Message can only be edited within " +
+                    $"{_options.MaxEditTimeMinutes} minutes after sending."),
+                null);
+        }
+
         var originalMessageSnapshot = new Message
         {
             Id = message.Id,
@@ -44,14 +82,20 @@ public class MessageEditingService : IMessageEditingService
             ReplyToMessageId = message.ReplyToMessageId,
             MediaAttachments = message.MediaAttachments?.ToList() ?? []
         };
-        
+
         message.EncryptedContent = editParams.NewContent;
         message.IsEdited = true;
         message.EditedAt = editParams.EditedAt;
 
         await _dbContext.SaveChangesAsync();
-        
-        _logger.LogInformation("Message {MessageId} edited successfully.", editParams.MessageId);
-        return new EditMessageResult(true, null, originalMessageSnapshot);
+
+        _logger.LogInformation(
+            "Message {MessageId} edited successfully.",
+            editParams.MessageId);
+
+        return new EditMessageResult(
+            true,
+            null,
+            originalMessageSnapshot);
     }
-}
+}