feat(*): add image grids for album and associated media displays

queries/views/globals/index.sql

@@ -1,25 +1,40 @@
 CREATE OR REPLACE VIEW optimized_globals AS
-SELECT
-  g.site_name,
-  g.site_description,
-  g.intro,
-  g.author,
-  g.email,
-  g.mastodon,
-  g.url,
-  g.cdn_url,
-  g.sitemap_uri,
-  g.theme_color,
-  g.site_type,
-  g.locale,
-  g.lang,
-  g.webfinger_username,
-  g.webfinger_hostname,
-  CONCAT('/', df.filename_disk) AS avatar,
-  CONCAT('/', df2.filename_disk) AS avatar_transparent,
-  CONCAT('/', df3.filename_disk) AS avatar_header
-FROM
-  globals g
+SELECT *
+FROM (
+  SELECT
+    g.site_name,
+    g.site_description,
+    g.intro,
+    g.author,
+    g.email,
+    g.mastodon,
+    g.url,
+    g.cdn_url,
+    g.sitemap_uri,
+    g.theme_color,
+    g.site_type,
+    g.locale,
+    g.lang,
+    g.webfinger_username,
+    g.webfinger_hostname,
+    CONCAT(g.cdn_url, '/', df.filename_disk) AS avatar,
+    CONCAT(g.cdn_url, '/', df2.filename_disk) AS avatar_transparent,
+    CONCAT(g.cdn_url, '/', df3.filename_disk) AS avatar_header,
+  json_build_object(
+    'open_graph_image', CASE
+      WHEN df.filename_disk IS NOT NULL AND df.filename_disk != '' AND df.filename_disk != '/' THEN
+        CONCAT('/', df.filename_disk)
+      ELSE NULL
+    END,
+    'open_graph_image_transparent', CASE
+      WHEN df2.filename_disk IS NOT NULL AND df2.filename_disk != '' AND df2.filename_disk != '/' THEN
+        CONCAT('/', df2.filename_disk)
+      ELSE NULL
+    END
+  ) AS metadata
+  FROM globals g
   LEFT JOIN directus_files df ON g.avatar = df.id
   LEFT JOIN directus_files df2 ON g.avatar_transparent = df2.id
   LEFT JOIN directus_files df3 ON g.avatar_header = df3.id
+  LIMIT 1
+) sub;