public ReleaseState UpdateMetadata(MetadataUpdateCommand command)
{
if (!this.TrackList.ContainsKey(command.TrackId) || command.Timestamp <= this.Timestamp)
{
return(this);
}
var state = new ReleaseState(this);
state.Timestamp = command.Timestamp;
var metadata = TrackList[command.TrackId];
state.TrackList = state.TrackList.SetItem(command.TrackId, metadata.Update(command));
return(state);
}
private bool OnMetadataUpdated(MetadataUpdateCommand command)
{
if (!CommandValidator.Validate(command).Success ||
command.ReleaseId != PersistenceId ||
!_state.TrackList.ContainsKey(command.TrackId) ||
command.Timestamp <= _state.TrackList[command.TrackId].Timestamp)
{
return(false);
}
Persist(command, cmd =>
{
_state = _state.UpdateMetadata(cmd);
TellStateUpdated();
});
return(true);
}
public MetadataState Update(MetadataUpdateCommand cmd)
{
var state = new MetadataState(this);
if (cmd.Timestamp > state.Timestamp)
{
state.TrackId = cmd.TrackId ?? state.TrackId;
state.Title = cmd.Title ?? state.Title;
state.Artist = cmd.Artist ?? state.Artist;
state.Album = cmd.Album ?? state.Album;
state.Genre = cmd.Genre ?? state.Genre;
state.Number = cmd.Number ?? state.Number;
state.Timestamp = cmd.Timestamp;
}
return(state);
}
public static ValidationResult Validate(MetadataUpdateCommand command)
{
if (command == null || string.IsNullOrEmpty(command.TrackId) || string.IsNullOrEmpty(command.ReleaseId))
{
return(ValidationResult.ErrorOf("Command can't be null and should have track and release ids filled"));
}
if (!string.IsNullOrEmpty(command.Title) ||
!string.IsNullOrEmpty(command.Genre) ||
!string.IsNullOrEmpty(command.Artist) ||
!string.IsNullOrEmpty(command.Album) ||
command.Number.HasValue)
{
return(ValidationResult.Ok);
}
return(ValidationResult.ErrorOf("Command has to update at least one field"));
}
public void UpdateMetadata(MetadataUpdateCommand updateMetadata)
{
WithValidation(() => CommandValidator.Validate(updateMetadata));
ActorModel.TellReleaseActor(updateMetadata.ReleaseId, updateMetadata);
}
public void UpdateMetadata([FromBody] MetadataUpdateCommand command)
{
_releaseService.UpdateMetadata(command);
}
