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import {sortByCount, sortChronologically} from '#sort';
import {filterByCount, filterMultipleArrays, stitchArrays} from '#sugar';
export default {
contentDependencies: ['generateListingPage', 'linkAlbum', 'linkTrack'],
extraDependencies: ['language', 'wikiData'],
sprawl({albumData}) {
return {albumData};
},
query({albumData}, spec) {
const albums = sortChronologically(albumData.slice());
const tracks =
albums.map(album =>
album.tracks.slice());
const durations =
tracks.map(tracks =>
tracks.map(track =>
track.duration));
// Filter out tracks without any duration.
// Sort at the same time, to avoid redundantly stitching again later.
const stitched = stitchArrays({tracks, durations});
for (const {tracks, durations} of stitched) {
filterByCount(tracks, durations);
sortByCount(tracks, durations, {greatestFirst: true});
}
// Filter out albums which don't have at least two (remaining) tracks.
// If the album only has one track in the first place, or if only one
// has any duration, then there aren't any comparisons to be made and
// it just takes up space on the listing page.
const numTracks = tracks.map(tracks => tracks.length);
filterMultipleArrays(albums, tracks, durations, numTracks,
(album, tracks, durations, numTracks) =>
numTracks >= 2);
return {spec, albums, tracks, durations};
},
relations(relation, query) {
return {
page: relation('generateListingPage', query.spec),
albumLinks:
query.albums
.map(album => relation('linkAlbum', album)),
trackLinks:
query.tracks
.map(tracks => tracks
.map(track => relation('linkTrack', track))),
};
},
data(query) {
return {
durations: query.durations,
};
},
generate(data, relations, {language}) {
return relations.page.slots({
type: 'chunks',
chunkTitles:
relations.albumLinks
.map(albumLink => ({album: albumLink})),
chunkRows:
stitchArrays({
trackLinks: relations.trackLinks,
durations: data.durations,
}).map(({trackLinks, durations}) =>
stitchArrays({
trackLink: trackLinks,
duration: durations,
}).map(({trackLink, duration}) => ({
track: trackLink,
duration: language.formatDuration(duration),
}))),
});
},
};
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