public async Task <IActionResult> Index(string?artist = null, string?album = null, string?song = null, bool embed = false)
{
var user = await GetUser();
var userVm = user != null?_mapper.Map <UserViewModel>(user) : null;
var loadedSong = await GetSongFromQuery(artist, album, song);
var homeViewModel = HomeViewModel.From(userVm, loadedSong, _appOptions, _cdnOptions);
homeViewModel.Embed = embed;
homeViewModel.CacheBustedAngularViews = _ngViews.Views;
// TODO
//homeViewModel.Redirect =
return(View("Index", homeViewModel));
}