public async Task <MessageModel> SendMessage(SendMessageRequest request, string SourceId)
{
var targetUser = await _userService.Get(SourceId, request.TargetId);
if (targetUser != null &&
(targetUser.OpenChat || await _friendService.AreUsersFriends(SourceId, request.TargetId)))
{
return(await _chatRepository.SendMessage(request, SourceId));
}
throw new ChatPermissionException("Cannot send message to user");
}