fix(search): ensure results are deduplicated

queries/views/feeds/search.sql

@@ -1,8 +1,8 @@
 CREATE OR REPLACE VIEW optimized_search_index AS
 WITH
   search_data AS (
-    SELECT
-      p.title,
+    SELECT DISTINCT
+      ON (p.url) p.title,
       p.url::TEXT AS url,
       p.description AS description,
       p.tags,
@@ -15,8 +15,8 @@ WITH
     FROM
       optimized_posts p
     UNION ALL
-    SELECT
-      CONCAT(l.title, ' via ', l.name) AS title,
+    SELECT DISTINCT
+      ON (l.link) CONCAT(l.title, ' via ', l.name) AS title,
       l.link::TEXT AS url,
       l.description AS description,
       l.tags,
@@ -29,8 +29,8 @@ WITH
     FROM
       optimized_links l
     UNION ALL
-    SELECT
-      CASE
+    SELECT DISTINCT
+      ON (b.url) CASE
         WHEN b.rating IS NOT NULL THEN CONCAT(b.title, ' (', b.rating, ')')
         ELSE b.title
       END AS title,
@@ -48,11 +48,11 @@ WITH
     WHERE
       LOWER(b.status) = 'finished'
     UNION ALL
-    SELECT
-      ar.name AS title,
+    SELECT DISTINCT
+      ON (ar.url) ar.name AS title,
       ar.url::TEXT AS url,
       ar.description AS description,
-      ARRAY[ar.genre_name] AS tags,
+      ARRAY_REMOVE(ARRAY[NULLIF(ar.genre_name, '')], NULL) AS tags,
       CONCAT(
         COALESCE(ar.emoji, ar.genre_emoji, '🎧'),
         ' ',
@@ -66,8 +66,8 @@ WITH
     FROM
       optimized_artists ar
     UNION ALL
-    SELECT
-      g.name AS title,
+    SELECT DISTINCT
+      ON (g.url) g.name AS title,
       g.url::TEXT AS url,
       g.description AS description,
       NULL AS tags,
@@ -80,8 +80,8 @@ WITH
     FROM
       optimized_genres g
     UNION ALL
-    SELECT
-      CONCAT(s.title, ' (', s.year, ')') AS title,
+    SELECT DISTINCT
+      ON (s.url) CONCAT(s.title, ' (', s.year, ')') AS title,
       s.url::TEXT AS url,
       s.description AS description,
       s.tags,
@@ -96,8 +96,8 @@ WITH
     WHERE
       s.last_watched_at IS NOT NULL
     UNION ALL
-    SELECT
-      CASE
+    SELECT DISTINCT
+      ON (m.url) CASE
         WHEN m.rating IS NOT NULL THEN CONCAT(m.title, ' (', m.rating, ')')
         ELSE CONCAT(m.title, ' (', m.year, ')')
       END AS title,