public async Task <ObservableCollection <MessageModel> > GetByConversationIdAsync(Guid conversationId, int userId)
{
if (userId <= 0)
{
throw new ArgumentOutOfRangeException(nameof(userId));
}
var messages = await _messageStorage.GetByConversationIdAsync(conversationId, userId);
var orderedMessages = messages.OrderBy(x => x.SendDate);
var messageList = new ObservableCollection <MessageModel>();
foreach (var message in orderedMessages)
{
var convertedMessage = new MessageModel
{
Message = message.MessageStr,
IsOwnMessage = message.Sender == userId,
UserId = message.Sender
};
messageList.Add(convertedMessage);
}
return(messageList);
}