public async Task MessageSeen(int chatId, int msgId, string currentUserId)
{
Chat chat = repository.Chats
.FirstOrDefault(c => c.ChatId == chatId);
if (chat != null)
{
ChatMessage msg = chat.Messages
.FirstOrDefault(m => m.Id == msgId);
repository.AddSeenChat(msg);
await Clients.All.SendAsync("MsgSeen", chatId, msgId);
await Clients.All.SendAsync("CheckTotalUnseenHeader",
chat.User1Id, chat.User2Id);
await Clients.All.SendAsync("HeaderMsgSeen", chatId, currentUserId);
}
}