public async Task <GetCreateMessageChatView> CreateMessage(string messageText, Guid roomId, string userId)
{
User user = await _userManager.FindByIdAsync(userId);
if (user == null)
{
throw new Exception("User is not find");
}
Message message = new Message
{
Text = messageText,
UserId = userId
};
MessageInRoom messageInRoom = new MessageInRoom
{
RoomId = roomId,
MessageId = message.Id
};
GetCreateMessageChatView response = new GetCreateMessageChatView()
{
Id = message.Id,
CreationAt = _dateTimeHelper.FormatDateFromDb(message.CreationAt),
Text = message.Text,
FullName = $"{user.FirstName} {user.LastName}",
UserId = userId
};
await _messageRepository.Create(message);
await _messageInRoomRepository.Create(messageInRoom);
return(response);
}
public async Task <GetAllRoomsChatView> GetAllRooms()
{
GetAllRoomsChatView response = new GetAllRoomsChatView();
List <MessageInRoom> lastMessages = new List <MessageInRoom>();
List <Room> rooms = await _roomRepository.GetAll();
List <MessageInRoom> messageInRooms = await _messageInRoomRepository.GetAllRoomsAndMessages();
if (!messageInRooms.Any())
{
throw new Exception("Message in rooms is not found");
}
if (!rooms.Any())
{
throw new Exception("Rooms is not found");
}
messageInRooms
.GroupBy(x => x.RoomId)
.ToList()
.ForEach(item =>
{
MessageInRoom lastMessage = item
.Where(x => x.RoomId == item.Key)
.OrderByDescending(x => x.CreationAt)
.FirstOrDefault();
lastMessages.Add(lastMessage);
});
if (!messageInRooms.Any())
{
return(response);
}
response.Rooms = _mapper.Map(lastMessages, response.Rooms);
if (rooms.Count > response.Rooms.Count)
{
List <Guid> roomsWithMessagesIds = response.Rooms
.Select(x => x.Id)
.ToList();
var roomsWithotMessages = rooms
.Where(x => !roomsWithMessagesIds
.Contains(x.Id))
.ToList()
.Select(x => new RoomGetAllRoomsChatViewtem()
{
Id = x.Id,
Name = x.Name,
Photo = x.Photo,
LastMessage = "No messages yet"
})
.ToList();
response.Rooms.AddRange(roomsWithotMessages);
}
return(response);
}