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import {sortAlphabetically} from '#sort';
import {
empty,
filterByCount,
filterMultipleArrays,
stitchArrays,
transposeArrays,
} from '#sugar';
export default {
contentDependencies: ['generateListingPage', 'linkArtist', 'linkGroup'],
extraDependencies: ['language', 'wikiData'],
sprawl({artistData, wikiInfo}) {
return {artistData, wikiInfo};
},
query(sprawl, spec) {
const artists =
sortAlphabetically(
sprawl.artistData.filter(artist => !artist.isAlias));
const interestingGroups =
sprawl.wikiInfo.divideTrackListsByGroups;
if (empty(interestingGroups)) {
return {spec};
}
// We don't actually care about *which* things belong to each group, only
// how many belong to each group. So we'll just compute a list of all the
// (interesting) groups that each of each artists' things belongs to.
const artistThingGroups =
artists.map(artist =>
([...artist.albumsAsAny.map(album => album.groups),
...artist.tracksAsAny.map(track => track.album.groups)])
.map(groups => groups
.filter(group => interestingGroups.includes(group))));
const [artistsByGroup, countsByGroup] =
transposeArrays(interestingGroups.map(group => {
const counts =
artistThingGroups
.map(thingGroups => thingGroups
.filter(thingGroups => thingGroups.includes(group))
.length);
const filteredArtists = artists.slice();
filterByCount(filteredArtists, counts);
return [filteredArtists, counts];
}));
const groups = interestingGroups;
filterMultipleArrays(
groups,
artistsByGroup,
countsByGroup,
(_group, artists, _counts) => !empty(artists));
return {
spec,
groups,
artistsByGroup,
countsByGroup,
};
},
relations(relation, query) {
const relations = {};
relations.page =
relation('generateListingPage', query.spec);
if (query.artistsByGroup) {
relations.groupLinks =
query.groups
.map(group => relation('linkGroup', group));
relations.artistLinksByGroup =
query.artistsByGroup
.map(artists => artists
.map(artist => relation('linkArtist', artist)));
}
return relations;
},
data(query) {
const data = {};
if (query.artistsByGroup) {
data.groupDirectories =
query.groups
.map(group => group.directory);
data.countsByGroup =
query.countsByGroup;
}
return data;
},
generate: (data, relations, {language}) =>
relations.page.slots({
type: 'chunks',
showSkipToSection: true,
chunkIDs:
data.groupDirectories
.map(directory => `contributed-to-${directory}`),
chunkTitles:
relations.groupLinks.map(groupLink => ({
group: groupLink,
})),
chunkRows:
stitchArrays({
artistLinks: relations.artistLinksByGroup,
counts: data.countsByGroup,
}).map(({artistLinks, counts}) =>
stitchArrays({
link: artistLinks,
count: counts,
}).map(({link, count}) => ({
artist: link,
contributions: language.countContributions(count, {unit: true}),
}))),
}),
};
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