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import {empty} from '../../util/sugar.js';
export default {
contentDependencies: [
'generatePreviousNextLinks',
'linkTrack',
'linkAlbumCommentary',
'linkAlbumGallery',
],
extraDependencies: ['html', 'language'],
relations(relation, album, track) {
const relations = {};
relations.previousNextLinks =
relation('generatePreviousNextLinks');
relations.previousTrackLink = null;
relations.nextTrackLink = null;
if (track) {
const index = album.tracks.indexOf(track);
if (index > 0) {
relations.previousTrackLink =
relation('linkTrack', album.tracks[index - 1]);
}
if (index < album.tracks.length - 1) {
relations.nextTrackLink =
relation('linkTrack', album.tracks[index + 1]);
}
}
if (album.tracks.some(t => t.hasUniqueCoverArt)) {
relations.albumGalleryLink =
relation('linkAlbumGallery', album);
}
if (album.commentary || album.tracks.some(t => t.commentary)) {
relations.albumCommentaryLink =
relation('linkAlbumCommentary', album);
}
return relations;
},
data(album, track) {
return {
hasMultipleTracks: album.tracks.length > 1,
isTrackPage: !!track,
};
},
generate(data, relations, {html, language}) {
return html.template({
annotation: `generateAlbumNavLinks`,
slots: {
showTrackNavigation: {type: 'boolean', default: false},
showExtraLinks: {type: 'boolean', default: false},
currentExtra: {
validate: v => v.is('gallery', 'commentary'),
},
},
content(slots) {
const {content: extraLinks = []} =
slots.showExtraLinks &&
{content: [
relations.albumGalleryLink.slots({
attributes: {class: slots.currentExtra === 'gallery' && 'current'},
content: language.$('albumPage.nav.gallery'),
}),
relations.albumCommentaryLink.slots({
attributes: {class: slots.currentExtra === 'commentary' && 'current'},
content: language.$('albumPage.nav.commentary'),
}),
]};
const {content: previousNextLinks = []} =
slots.showTrackNavigation &&
data.isTrackPage &&
data.hasMultipleTracks &&
relations.previousNextLinks.slots({
previousLink: relations.previousTrackLink,
nextLink: relations.nextTrackLink,
});
const randomLink =
slots.showTrackNavigation &&
data.hasMultipleTracks &&
html.tag('a',
{
href: '#',
'data-random': 'track-in-album',
id: 'random-button',
},
(data.isTrackPage
? language.$('trackPage.nav.random')
: language.$('albumPage.nav.randomTrack')));
const allLinks = [
...previousNextLinks,
...extraLinks,
randomLink,
].filter(Boolean);
if (empty(allLinks)) {
return html.blank();
}
return `(${language.formatUnitList(allLinks)})`
},
});
},
};
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