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import {empty} from '../../util/sugar.js';
import groupTracksByGroup from '../util/groupTracksByGroup.js';
export default {
contentDependencies: ['generateTrackList'],
extraDependencies: ['html', 'language'],
relations(relation, tracks, groups) {
if (empty(tracks)) {
return {};
}
if (empty(groups)) {
return {
flatList:
relation('generateTrackList', tracks),
};
}
const lists = groupTracksByGroup(tracks, groups);
return {
groupedLists:
Array.from(lists.entries()).map(([groupOrOther, tracks]) => ({
...(groupOrOther === 'other'
? {other: true}
: {groupLink: relation('linkGroup', groupOrOther)}),
list:
relation('generateTrackList', tracks),
})),
};
},
generate(relations, {html, language}) {
if (relations.flatList) {
return relations.flatList;
}
return html.tag('dl',
relations.groupedLists.map(({other, groupLink, list}) => [
html.tag('dt',
(other
? language.$('trackList.group.fromOther')
: language.$('trackList.group', {
group: groupLink
}))),
html.tag('dd', list),
]));
},
};
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