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// Gets the track's album. This will early exit if albumData is missing.
// By default, if there's no album whose list of tracks includes this track,
// the output dependency will be null; set {notFoundMode: 'exit'} to early
// exit instead.
import {input, templateCompositeFrom} from '#composite';
import {empty} from '#sugar';
import {is} from '#validators';
export default templateCompositeFrom({
annotation: `withAlbum`,
inputs: {
notFoundMode: input({
validate: is('exit', 'null'),
defaultValue: 'null',
}),
},
outputs: ['#album'],
steps: () => [
{
dependencies: [input('notFoundMode'), 'albumData'],
compute: (continuation, {
[input('notFoundMode')]: notFoundMode,
['albumData']: albumData,
}) =>
(albumData === null
? continuation.exit(null)
: empty(albumData)
? (notFoundMode === 'exit'
? continuation.exit(null)
: continuation.raiseOutput({'#album': null}))
: continuation()),
},
{
dependencies: [input.myself(), 'albumData'],
compute: (continuation, {
[input.myself()]: track,
['albumData']: albumData,
}) =>
continuation({
['#album']:
albumData.find(album => album.tracks.includes(track))
?? null,
}),
},
{
dependencies: [input('notFoundMode'), '#album'],
compute: (continuation, {
[input('notFoundMode')]: notFoundMode,
['#album']: album,
}) =>
((album === null && notFoundMode === 'exit')
? continuation.exit(null)
: continuation.raiseOutput({'#album': album})),
},
],
});
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