content: generateTrackNavLinks

1 files changed, 47 insertions, 0 deletions

diff --git a/src/content/dependencies/generateTrackNavLinks.js b/src/content/dependencies/generateTrackNavLinks.js
new file mode 100644
index 00000000..89da171a
--- /dev/null
+++ b/src/content/dependencies/generateTrackNavLinks.js
@@ -0,0 +1,47 @@
+export default {
+  contentDependencies: ['linkAlbum', 'linkTrack'],
+  extraDependencies: ['html', 'language'],
+
+  relations: (relation, track) => ({
+    albumLink:
+      relation('linkAlbum', track.album),
+
+    trackLink:
+      relation('linkTrack', track),
+  }),
+
+  data: (track) => ({
+    hasTrackNumbers:
+      track.album.hasTrackNumbers,
+
+    trackNumber:
+      track.album.tracks.indexOf(track) + 1,
+  }),
+
+  slots: {},
+
+  generate: (data, relations, slots, {html, language}) =>
+    language.encapsulate('trackPage.nav', navCapsule => [
+      {auto: 'home'},
+
+      {html: relations.albumLink.slot('color', false)},
+
+      {
+        html:
+          language.encapsulate(navCapsule, 'track', workingCapsule => {
+            const workingOptions = {};
+
+            workingOptions.track =
+              relations.trackLink
+                .slot('attributes', {class: 'current'});
+
+            if (data.hasTrackNumbers) {
+              workingCapsule += '.withNumber';
+              workingOptions.number = data.trackNumber;
+            }
+
+            return language.$(workingCapsule, workingOptions);
+          }),
+      },
+    ]),
+};