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import {sortChronologically} from '#sort';
import {atOffset} from '#sugar';
export default {
contentDependencies: [
'generateColorStyleAttribute',
'generateSecondaryNavParentSiblingsPart',
'linkAlbumDynamically',
'linkGroup',
],
extraDependencies: ['html'],
query(group, album) {
const query = {};
if (album.date) {
// Sort by latest first. This matches the sorting order used on group
// gallery pages, ensuring that previous/next matches moving up/down
// the gallery. Note that this makes the index offsets "backwards"
// compared to how latest-last chronological lists are accessed.
const albums =
sortChronologically(
group.albums.filter(album => album.date),
{latestFirst: true});
const currentIndex =
albums.indexOf(album);
query.previousAlbum =
atOffset(albums, currentIndex, +1);
query.nextAlbum =
atOffset(albums, currentIndex, -1);
}
return query;
},
relations: (relation, query, group, _album) => ({
parentSiblingsPart:
relation('generateSecondaryNavParentSiblingsPart'),
groupLink:
relation('linkGroup', group),
colorStyle:
relation('generateColorStyleAttribute', group.color),
previousAlbumLink:
(query.previousAlbum
? relation('linkAlbumDynamically', query.previousAlbum)
: null),
nextAlbumLink:
(query.nextAlbum
? relation('linkAlbumDynamically', query.nextAlbum)
: null),
}),
slots: {
mode: {
validate: v => v.is('album', 'track'),
default: 'album',
},
},
generate: (relations, slots) =>
relations.parentSiblingsPart.slots({
showPreviousNext: slots.mode === 'album',
colorStyle: relations.colorStyle,
mainLink: relations.groupLink,
previousLink: relations.previousAlbumLink,
nextLink: relations.nextAlbumLink,
stringsKey: 'albumSecondaryNav.group',
mainLinkOption: 'group',
}),
};
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