3 files changed, 67 insertions, 18 deletions

diff --git a/src/content/dependencies/generateAlbumTrackList.js b/src/content/dependencies/generateAlbumTrackList.js
index 089f6e30..ee06b9e6 100644
--- a/src/content/dependencies/generateAlbumTrackList.js
+++ b/src/content/dependencies/generateAlbumTrackList.js
@@ -108,9 +108,25 @@ export default {
     return data;
   },
 
-  generate(data, relations, {html, language}) {
+  slots: {
+    collapseDurationScope: {
+      validate: v =>
+        v.is('never', 'track', 'section', 'album'),
+
+      default: 'album',
+    },
+  },
+
+  generate(data, relations, slots, {html, language}) {
     const listTag = (data.hasTrackNumbers ? 'ol' : 'ul');
 
+    const slotItems = items =>
+      items.map(item =>
+        item.slots({
+          collapseDurationScope:
+            slots.collapseDurationScope,
+        }));
+
     switch (data.displayMode) {
       case 'trackSections':
         return html.tag('dl', {class: 'album-group-list'},
@@ -152,11 +168,11 @@ export default {
                   data.hasTrackNumbers &&
                     {start: startIndex + 1},
 
-                  items)),
+                  slotItems(items))),
             ]));
 
       case 'tracks':
-        return html.tag(listTag, relations.items);
+        return html.tag(listTag, slotItems(relations.items));
 
       default:
         return html.blank();
diff --git a/src/content/dependencies/generateAlbumTrackListItem.js b/src/content/dependencies/generateAlbumTrackListItem.js
index 2772496e..11b6a1b0 100644
--- a/src/content/dependencies/generateAlbumTrackListItem.js
+++ b/src/content/dependencies/generateAlbumTrackListItem.js
@@ -9,11 +9,21 @@ export default {
 
   extraDependencies: ['getColors', 'html', 'language'],
 
-  query(track) {
+  query(track, album) {
     const query = {};
 
     query.duration = track.duration ?? 0;
-    query.durationMissing = !track.duration;
+
+    query.trackHasDuration = !!track.duration;
+
+    query.sectionHasDuration =
+      !album.trackSections
+        .some(section =>
+          section.tracks.every(track => !track.duration) &&
+          section.tracks.includes(track));
+
+    query.albumHasDuration =
+      album.tracks.some(track => track.duration);
 
     return query;
   },
@@ -30,7 +40,7 @@ export default {
     relations.trackLink =
       relation('linkTrack', track);
 
-    if (query.durationMissing) {
+    if (!query.trackHasDuration) {
       relations.missingDuration =
         relation('generateAlbumTrackListMissingDuration');
     }
@@ -42,7 +52,9 @@ export default {
     const data = {};
 
     data.duration = query.duration;
-    data.durationMissing = query.durationMissing;
+    data.trackHasDuration = query.trackHasDuration;
+    data.sectionHasDuration = query.sectionHasDuration;
+    data.albumHasDuration = query.albumHasDuration;
 
     if (track.color !== album.color) {
       data.color = track.color;
@@ -59,7 +71,16 @@ export default {
     return data;
   },
 
-  generate(data, relations, {getColors, html, language}) {
+  slots: {
+    collapseDurationScope: {
+      validate: v =>
+        v.is('never', 'track', 'section', 'album'),
+
+      default: 'album',
+    },
+  },
+
+  generate(data, relations, slots, {getColors, html, language}) {
     let colorStyle;
     if (data.color) {
       const {primary} = getColors(data.color);
@@ -69,20 +90,31 @@ export default {
     const parts = ['trackList.item'];
     const options = {};
 
-    parts.push('withDuration');
-
-    options.duration =
-      (data.durationMissing
-        ? relations.missingDuration
-        : language.$('trackList.item.withDuration.duration', {
-            duration:
-              language.formatDuration(data.duration),
-          }));
-
     options.track =
       relations.trackLink
         .slot('color', false);
 
+    const collapseDuration =
+      (slots.collapseDurationScope === 'track'
+        ? !data.trackHasDuration
+     : slots.collapseDurationScope === 'section'
+        ? !data.sectionHasDuration
+     : slots.collapseDurationScope === 'album'
+        ? !data.albumHasDuration
+        : false);
+
+    if (!collapseDuration) {
+      parts.push('withDuration');
+
+      options.duration =
+        (data.trackHasDuration
+          ? language.$('trackList.item.withDuration.duration', {
+              duration:
+                language.formatDuration(data.duration),
+            })
+          : relations.missingDuration);
+    }
+
     if (data.showArtists) {
       parts.push('withArtists');
       options.by =
diff --git a/src/strings-default.yaml b/src/strings-default.yaml
index d274d75b..0cdfd071 100644
--- a/src/strings-default.yaml
+++ b/src/strings-default.yaml
@@ -368,6 +368,7 @@ trackList:
     fromOther: "From somewhere else:"
 
   item:
+    _: "{TRACK}"
     withDuration: "{DURATION} {TRACK}"
     withArtists: "{TRACK} {BY}"
     withDuration.withArtists: "{DURATION} {TRACK} {BY}"