content: track listings

1 files changed, 81 insertions, 0 deletions

diff --git a/src/content/dependencies/listTracksWithExtra.js b/src/content/dependencies/listTracksWithExtra.js
new file mode 100644
index 0000000..6287813
--- /dev/null
+++ b/src/content/dependencies/listTracksWithExtra.js
@@ -0,0 +1,81 @@
+import {empty, stitchArrays} from '../../util/sugar.js';
+import {filterMultipleArrays, sortChronologically} from '../../util/wiki-data.js';
+
+export default {
+  contentDependencies: ['generateListingPage', 'linkAlbum', 'linkTrack'],
+  extraDependencies: ['html', 'language', 'wikiData'],
+
+  sprawl({albumData}) {
+    return {albumData};
+  },
+
+  query(sprawl, spec, property, valueMode) {
+    const albums =
+      sortChronologically(sprawl.albumData.slice());
+
+    const tracks =
+      albums
+        .map(album =>
+          album.tracks
+            .filter(track => {
+              switch (valueMode) {
+                case 'truthy': return !!track[property];
+                case 'array': return !empty(track[property]);
+                default: return false;
+              }
+            }));
+
+    filterMultipleArrays(albums, tracks,
+      (album, tracks) => !empty(tracks));
+
+    return {spec, albums, tracks};
+  },
+
+  relations(relation, query) {
+    return {
+      page: relation('generateListingPage', query.spec),
+
+      albumLinks:
+        query.albums
+          .map(album => relation('linkAlbum', album)),
+
+      trackLinks:
+        query.tracks
+          .map(tracks => tracks
+            .map(track => relation('linkTrack', track))),
+    };
+  },
+
+  data(query) {
+    return {
+      dates:
+        query.albums.map(album => album.date),
+    };
+  },
+
+  slots: {
+    hash: {type: 'string'},
+  },
+
+  generate(data, relations, slots, {language}) {
+    return relations.page.slots({
+      type: 'chunks',
+
+      chunkTitles:
+        stitchArrays({
+          albumLink: relations.albumLinks,
+          date: data.dates,
+        }).map(({albumLink, date}) => ({
+            album: albumLink,
+            date: language.formatDate(date),
+          })),
+
+      chunkRows:
+        relations.trackLinks
+          .map(trackLinks => trackLinks
+            .map(trackLink => ({
+              track: trackLink.slot('hash', slots.hash),
+            }))),
+    });
+  },
+};