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import {sortChronologically} from '#sort';
import {empty, filterMultipleArrays, stitchArrays} from '#sugar';
export default {
contentDependencies: ['generateListingPage', 'linkAlbum', 'linkFlash', '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 flashes =
tracks.map(tracks =>
tracks.map(track =>
track.featuredInFlashes));
// Filter out tracks that aren't featured in any flashes.
// This listing doesn't perform any sorting within albums.
const stitched = stitchArrays({tracks, flashes});
for (const {tracks, flashes} of stitched) {
filterMultipleArrays(tracks, flashes,
(tracks, flashes) => !empty(flashes));
}
// Filter out albums which don't have at least one remaining track.
filterMultipleArrays(albums, tracks, flashes,
(album, tracks, _flashes) => !empty(tracks));
return {spec, albums, tracks, flashes};
},
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))),
flashLinks:
query.flashes
.map(flashesByAlbum => flashesByAlbum
.map(flashesByTrack => flashesByTrack
.map(flash => relation('linkFlash', flash)))),
};
},
generate(relations, {language}) {
return relations.page.slots({
type: 'chunks',
chunkTitles:
relations.albumLinks
.map(albumLink => ({album: albumLink})),
chunkRows:
stitchArrays({
trackLinks: relations.trackLinks,
flashLinks: relations.flashLinks,
}).map(({trackLinks, flashLinks}) =>
stitchArrays({
trackLink: trackLinks,
flashLinks: flashLinks,
}).map(({trackLink, flashLinks}) => ({
track: trackLink,
flashes: language.formatConjunctionList(flashLinks),
}))),
});
},
};
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