import { registerNode, type NodeDef, type PortDef } from '../graph/NodeRegistry';
import { textOf } from '../model/Properties';

/** The two nodes of a song's routing (#350): one per track, and the one output of the song. */
export const SONG_TRACK = 'SongTrack';
export const SONG_OUTPUT = 'SongOutput';
/** The node param a track's node shows its track's name by, kept in step with the track. */
export const SONG_TRACK_NAME = 'name';

const audioIn: PortDef = { key: 'in', label: 'in', type: 'audio', many: true };
const audioOut: PortDef = { key: 'out', label: 'out', type: 'audio' };

export const SongTrackNode = registerNode({
  type: SONG_TRACK,
  label: 'Track',
  category: 'sound',
  description:
    'A track of the song: its items and whatever comes in, through its sound FX, volume and pan, sent on to every link.',
  inputs: [audioIn],
  outputs: [audioOut],
  params: [],
  fixed: true,
  acyclic: true,
  derivePorts: ({ node }) => ({ label: textOf(node.params[SONG_TRACK_NAME] ?? '') || 'Track' }),
});

export const SongOutputNode = registerNode({
  type: SONG_OUTPUT,
  label: 'Output',
  category: 'sound',
  description: 'What the song sounds like: on to the bus of the song.',
  inputs: [audioIn],
  outputs: [],
  params: [],
  fixed: true,
  acyclic: true,
});

export function isSongRoutingDef(def: NodeDef): boolean {
  return def.type === SONG_TRACK || def.type === SONG_OUTPUT;
}