was added firebase nitifying

Govor.Application/Services/UserPrivateChatsCreator.cs

@@ -0,0 +1,46 @@
+using Govor.Application.Interfaces;
+using Govor.Core.Models;
+using Govor.Core.Repositories.PrivateChats;
+using Microsoft.Extensions.Logging;
+
+namespace Govor.Application.Services;
+
+public class UserPrivateChatsCreator : IUserPrivateChatsCreator
+{
+    private readonly IPrivateChatsRepository _privateChats;
+    private readonly IPrivateChatGroupManager _privateChatGroupManager;
+    private readonly ILogger<UserPrivateChatsCreator> _logger;
+    
+    public UserPrivateChatsCreator(
+        IPrivateChatsRepository privateChats,
+        IPrivateChatGroupManager privateChatGroupManager,
+        ILogger<UserPrivateChatsCreator> logger)
+    {
+        _privateChats = privateChats;
+        _privateChatGroupManager = privateChatGroupManager;
+        _logger = logger;
+    }
+
+    public async Task<PrivateChat> CreateAsync(Guid userIdA, Guid userIdB)
+    {
+        if (!_privateChats.Exist(userIdA, userIdB))
+        {
+            var recipientId = Guid.NewGuid();
+            var privateChat = new PrivateChat()
+            {
+                Id = recipientId,
+                UserAId = userIdA,
+                UserBId = userIdB
+            };
+            
+            await _privateChats.AddAsync(privateChat);
+            await _privateChatGroupManager.AddUsersToPrivateChatGroupAsync(privateChat); // Notifying 
+            
+            _logger.LogInformation($"User for {userIdA} and {userIdB} was created private chat with Id: {recipientId}");
+            return privateChat;
+        }
+        
+        _logger.LogInformation($"Private chat already exists for {userIdA} and {userIdB}; Returning already created chat...");
+        return await _privateChats.GetByMembersAsync(userIdA, userIdB);
+    }
+}