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import {accumulateSum, empty, stitchArrays} from '#sugar';
function displayTrackSections(album) {
if (empty(album.trackSections)) {
return false;
}
if (album.trackSections.length > 1) {
return true;
}
if (!album.trackSections[0].isDefaultTrackSection) {
return true;
}
return false;
}
function displayTracks(album) {
if (empty(album.tracks)) {
return false;
}
return true;
}
function getDisplayMode(album) {
if (displayTrackSections(album)) {
return 'trackSections';
} else if (displayTracks(album)) {
return 'tracks';
} else {
return 'none';
}
}
export default {
contentDependencies: ['generateAlbumTrackListItem', 'generateContentHeading'],
extraDependencies: ['html', 'language'],
query(album) {
return {
displayMode: getDisplayMode(album),
};
},
relations(relation, query, album) {
const relations = {};
switch (query.displayMode) {
case 'trackSections':
relations.trackSectionHeadings =
album.trackSections.map(() =>
relation('generateContentHeading'));
relations.itemsByTrackSection =
album.trackSections.map(section =>
section.tracks.map(track =>
relation('generateAlbumTrackListItem', track, album)));
break;
case 'tracks':
relations.itemsByTrack =
album.tracks.map(track =>
relation('generateAlbumTrackListItem', track, album));
break;
}
return relations;
},
data(query, album) {
const data = {};
data.displayMode = query.displayMode;
data.hasTrackNumbers = album.hasTrackNumbers;
switch (query.displayMode) {
case 'trackSections':
data.trackSectionInfo =
album.trackSections.map(section => {
const info = {};
info.name = section.name;
info.duration = accumulateSum(section.tracks, track => track.duration);
info.durationApproximate = section.tracks.length > 1;
if (album.hasTrackNumbers) {
info.startIndex = section.startIndex;
}
return info;
});
break;
}
return data;
},
generate(data, relations, {html, language}) {
const listTag = (data.hasTrackNumbers ? 'ol' : 'ul');
switch (data.displayMode) {
case 'trackSections':
return html.tag('dl', {class: 'album-group-list'},
stitchArrays({
heading: relations.trackSectionHeadings,
items: relations.itemsByTrackSection,
info: data.trackSectionInfo,
}).map(({heading, items, info}) => [
heading.slots({
tag: 'dt',
title:
language.$('trackList.section.withDuration', {
section: info.name,
duration:
language.formatDuration(info.duration, {
approximate: info.durationApproximate,
}),
}),
}),
html.tag('dd',
html.tag(listTag,
data.hasTrackNumbers ? {start: info.startIndex + 1} : {},
items)),
]));
case 'tracks':
return html.tag(listTag, relations.itemsByTrack);
default:
return html.blank();
}
}
};
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