public Decision(IEventStream stream)
{
foreach (var domainEvent in stream.GetEvents())
{
if (domainEvent is UserDeleted userDeleted)
{
Apply(userDeleted);
}
}
}
private void Restore(IEventStream stream)
{
foreach (var domainEvent in stream.GetEvents())
{
if (domainEvent is RadioCreated radioCreated)
{
Name = radioCreated.Name;
Url = radioCreated.Url;
}
}
}
public Decision(IEventStream stream)
{
_stream = stream;
foreach (var domainEvent in _stream.GetEvents())
{
if (domainEvent is RadioDeleted radioDeleted)
{
Apply(radioDeleted);
}
}
}
public async Task Start(CancellationToken cancellationToken)
{
var handlers = _allHandlersResolver();
var types = handlers.Select(h => h.GetType().GenericTypeArguments.Single());
await _eventStream.Start(types);
while (cancellationToken.IsCancellationRequested == false)
{
var eventWrappers = await _eventStream.GetEvents();
foreach (var eventWrapper in eventWrappers)
{
if (_processEventDelegateCache.ContainsKey(eventWrapper.Event.GetType()) == false)
{
_processEventDelegateCache.Add(eventWrapper.Event.GetType(), GetProcessEventDelegate(eventWrapper.Event.GetType()));
}
await _processEventDelegateCache[eventWrapper.Event.GetType()](eventWrapper);
}
}
}
private void Restore(IEventStream stream)
{
foreach (var domainEvent in stream.GetEvents())
{
if (domainEvent is UserCreated userCreated)
{
Identity = userCreated.Identity;
}
else if (domainEvent is PlaylistAdded playlistAdded)
{
Playlist = new Playlist(playlistAdded.PlaylistId, playlistAdded.Name);
}
else if (domainEvent is SongAdded songAdded)
{
Playlist.AddSong(new Song(songAdded.SongId, songAdded.Title, songAdded.Artist));
}
else if (domainEvent is PlaylistDeleted)
{
Playlist = Playlist.Empty;
}
}
}
public bool RadioSongExists(string name, RadioSong radioSong)
{
return(_stream.GetEvents().OfType <RadioSongParsed>()
.Any(x => x == new RadioSongParsed(name, radioSong.Title, radioSong.Artist)));
}