content: decompose generateCoverArtwork

No visual/site changes yet.

This involves introducing an unfortunate mega-hack in
generateStickyHeadingContainer, which sets slots on cover
artworks. Very scary. Oooooo

Otherwise, all cover artwork code is much more compositional.
Pass-through slots (`image`) are removed in generateCoverArtwork
and a partially-formed `image` slot is accepted instead.

1 files changed, 23 insertions, 0 deletions

diff --git a/src/content/dependencies/generateCoverArtworkArtistDetails.js b/src/content/dependencies/generateCoverArtworkArtistDetails.js
new file mode 100644
index 00000000..5b235353
--- /dev/null
+++ b/src/content/dependencies/generateCoverArtworkArtistDetails.js
@@ -0,0 +1,23 @@
+export default {
+  contentDependencies: ['linkArtistGallery'],
+  extraDependencies: ['html', 'language'],
+
+  relations: (relation, contributions) => ({
+    artistLinks:
+      contributions
+        .map(contrib => contrib.artist)
+        .map(artist =>
+          relation('linkArtistGallery', artist)),
+  }),
+
+  generate: (relations, {html, language}) =>
+    html.tag('p', {class: 'image-details'},
+      {[html.onlyIfContent]: true},
+
+      {class: 'illustrator-details'},
+
+      language.$('misc.coverGrid.details.coverArtists', {
+        artists:
+          language.formatConjunctionList(relations.artistLinks),
+      })),
+};