public async Task SendMessage(JsonMessage message)
{
var sender = await _userManager.GetUserAsync(Context.User);
if (message.Sender.UserName != sender.UserName)
{
throw new AuthenticationException();
}
var receiver = await _userManager.FindByNameAsync(message.Receiver.UserName) ??
throw new ArgumentException($"User with user name {message.Receiver.UserName} doesn't exist");
message.Text = new Regex(@" ?").Replace(message.Text, " ");
message.Text = HttpUtility.HtmlDecode(message.Text);
if (string.IsNullOrWhiteSpace(message.Text))
{
throw new ArgumentNullException(nameof(message.Text));
}
if (message.Text.Length > 4096)
{
throw new ArgumentException("Message text length must be less then 4096");
}
await _messageManager.AddAsync(new Message
{
Receiver = receiver,
Sender = sender,
SendDate = DateTime.UtcNow,
Text = message.Text
});
var pathToProfilePhotos = Path.Combine(_environment.ContentRootPath, _photoOptions.Value.UsersPhotosPath);
message.Sender.PhotoUrl = Path.Combine(pathToProfilePhotos, sender.ProfilePhotoName);
message.Receiver.PhotoUrl = Path.Combine(pathToProfilePhotos, receiver.ProfilePhotoName);
var receiverId = Connections.GetValueOrDefault(message.Receiver.UserName);
if (!(receiverId is null))
{
await Clients.Client(receiverId).SendAsync("receiveMessage", message);
}
