public async Task <AffectedViewersDto> Handle(DeletePlaylistCommand request, CancellationToken cancellationToken)
{
try
{
using var transaction = new TransactionScope(TransactionScopeAsyncFlowOption.Enabled);
var room = await _roomRepository.GetAsync(request.RoomId, cancellationToken)
?? throw new ArgumentException("Room could not be found");
var playlist = await _playlistRepository.GetAsync(room.ActivePlaylistId.Value, cancellationToken)
?? throw new ArgumentException("Playlist could not be found");
var viewer = await _viewerRepository.GetAsync(request.MemberId, cancellationToken)
?? throw new ArgumentException("Viewer could not be found");
if (!playlist.Owner.Equals(viewer))
{
throw new InformativeException("Playlist does not belong to you");
}
await _playlistRepository.DeleteAsync(playlist.Id, cancellationToken);
var remainingPlaylists = await _playlistRepository.GetAllByViewerAsync(request.MemberId, cancellationToken);
if (remainingPlaylists == null || remainingPlaylists.Count == 0)
{
var newPlaylistId = _identifierProvider.GenerateGuid();
var newPlaylist = new Playlist(newPlaylistId, "Temporary", viewer);
await _playlistRepository.AddAsync(newPlaylist, cancellationToken);
room.UpdateSelectedPlaylist(newPlaylist);
}
else
{
room.UpdateSelectedPlaylist(remainingPlaylists.First());
}
await _roomRepository.UpdateAsync(room, cancellationToken);
transaction.Complete();
var affectedViewers = room.Viewers.ToList();
affectedViewers.Add(room.Host);
return(_mapper.Map <AffectedViewersDto>(affectedViewers));
}
catch (InformativeException exception)
{
_logger.LogError(exception, $"Could not delete playlist {request.RoomId.ToString()} by member " +
$"{request.MemberId.ToString()}");
throw;
}
catch (Exception exception)
{
_logger.LogError(exception, $"Could not delete playlist {request.RoomId.ToString()} by member " +
$"{request.MemberId.ToString()}");
throw new InformativeException("Could not delete playlist. Please retry");
}
}
public async Task <RoomDto> Handle(CreateRoomCommand request, CancellationToken cancellationToken)
{
try
{
using var transaction = new TransactionScope(TransactionScopeAsyncFlowOption.Enabled);
var host = await _viewerRepository.GetAsync(request.HostId, cancellationToken)
?? throw new ArgumentException($"Host {request.HostId.ToString()} could not be found");
if (request.PlaylistId == default)
{
Guid generatedPlaylistId = _identifierProvider.GenerateGuid();
var playlist = new Playlist(generatedPlaylistId, "Temporary", host)
{
IsTemporary = true
};
await _playlistRepository.AddAsync(playlist, cancellationToken);
request.PlaylistId = generatedPlaylistId;
}
Guid generatedRoomId = _identifierProvider.GenerateGuid();
string invitationToken = _identifierProvider.GenerateToken(generatedRoomId);
var room = new Room(
generatedRoomId,
request.Name,
host,
request.Type,
new Invitation(invitationToken),
request.PlaylistId,
request.Description)
{
MaxViewersQuantity = request.MaxViewersQuantity
};
await _roomRepository.AddAsync(room, cancellationToken);
transaction.Complete();
return(_mapper.Map <RoomDto>(room));
}
catch (InformativeException exception)
{
_logger.LogError(exception, $"Could not create room with name {request.Name} by user with ID " +
$"{request.HostId.ToString()}");
throw;
}
catch (Exception exception)
{
_logger.LogError(exception, $"Could not create room with name {request.Name} by user with ID " +
$"{request.HostId.ToString()}");
throw new InformativeException("Could not create room. Please retry");
}
}
public async Task <Unit> Handle(SavePlaylistCommand request, CancellationToken cancellationToken)
{
try
{
using var transaction = new TransactionScope(TransactionScopeAsyncFlowOption.Enabled);
var room = await _roomRepository.GetAsync(request.RoomId, cancellationToken)
?? throw new ArgumentException("Room could not be found");
var viewer = await _viewerRepository.GetAsync(request.ViewerId, cancellationToken)
?? throw new ArgumentException("Viewer could not be found");
if (!room.Viewers.Contains(viewer))
{
throw new InvalidOperationException("Viewer does not belong to this room");
}
var activePlaylist = await _playlistRepository.GetAsync(room.ActivePlaylistId.Value, cancellationToken)
?? throw new ArgumentException("Playlist could not be found");
if (activePlaylist.Owner == viewer)
{
if (!activePlaylist.IsTemporary)
{
throw new InvalidOperationException("Playlist is added already");
}
activePlaylist.IsTemporary = false;
}
else
{
Guid newPlaylistId = _identifierProvider.GenerateGuid();
activePlaylist = CreatePlaylistCopy(newPlaylistId, viewer, activePlaylist);
}
await _playlistRepository.AddAsync(activePlaylist, cancellationToken);
transaction.Complete();
return(Unit.Value);
}
catch (InformativeException exception)
{
_logger.LogError(exception, $"Could not add playlist {request.RoomId.ToString()} " +
$"to host of room {request.RoomId.ToString()}");
throw;
}
catch (Exception exception)
{
_logger.LogError(exception, $"Could not add playlist {request.RoomId.ToString()} " +
$"to host of room {request.RoomId.ToString()}");
throw new InformativeException("Could not add playlist. Please retry");
}
}
public async Task RegisterAsync(Guid id, string name)
{
var authenticator = await _authenRepository.GetAsync(id);
if (authenticator == null)
{
throw new Exception($"Authenticator with tag: '{id}' does not exists'");
}
var playlist = new Playlist(name, id);
await _playlistRepository.AddAsync(playlist);
}
public async Task <PlaylistViewModel> AddPlaylistAsync(PlaylistViewModel newPlaylistViewModel, CancellationToken ct = default(CancellationToken))
{
var playlist = new Playlist
{
Name = newPlaylistViewModel.Name
};
playlist = await _playlistRepository.AddAsync(playlist, ct);
newPlaylistViewModel.PlaylistId = playlist.PlaylistId;
return(newPlaylistViewModel);
}