public async Task <IActionResult> GetReceivedMessagesForUser(string username)
{
if (String.IsNullOrEmpty(username))
{
return(BadRequest("Username is missing"));
}
var messages = _inMemoryStorage.GetMessagesByUserName(username);
if (messages.Count == 0)
{
return(NotFound("User not found or has no messages"));
}
return(Ok(messages));
}