chore: search cleanup

queries/functions/search.psql

@@ -0,0 +1,42 @@
+CREATE OR REPLACE FUNCTION public.search_optimized_index(
+    search_query text,
+    page_size integer,
+    page_offset integer,
+    types text[]
+) RETURNS TABLE(
+    result_id integer,
+    url text,
+    title text,
+    description text,
+    tags text,
+    genre_name text,
+    genre_url text,
+    type text,
+    total_plays integer,
+    rank real
+) AS $$
+BEGIN
+    RETURN QUERY
+    SELECT
+        s.id::integer AS result_id,
+        s.url,
+        s.title,
+        s.description,
+        array_to_string(s.tags, ', ') AS tags,
+        s.genre_name,
+        s.genre_url,
+        s.type,
+        s.total_plays,
+        ts_rank_cd(
+            to_tsvector('english', s.title || ' ' || s.description || array_to_string(s.tags, ' ')),
+            plainto_tsquery('english', search_query)
+        ) AS rank
+    FROM optimized_search_index s
+    WHERE
+        (types IS NULL OR s.type = ANY(types))
+        AND plainto_tsquery('english', search_query) @@
+            to_tsvector('english', s.title || ' ' || s.description || array_to_string(s.tags, ' '))
+    ORDER BY rank DESC
+    LIMIT page_size OFFSET page_offset;
+END;
+$$ LANGUAGE plpgsql;