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,
    total_count bigint
) AS $$
BEGIN
    RETURN QUERY
    SELECT
        s.id::integer AS result_id,
        s.url,
        s.title,
        s.description,
        array_to_string(s.tags, ', ') AS tags,
        s.genre_name,
        s.genre_url,
        s.type,
        s.total_plays,
        ts_rank_cd(
            to_tsvector('english', s.title || ' ' || s.description || array_to_string(s.tags, ' ')),
            plainto_tsquery('english', search_query)
        ) AS rank,
        COUNT(*) OVER () AS total_count
    FROM optimized_search_index s
    WHERE
        (types IS NULL OR s.type = ANY(types))
        AND plainto_tsquery('english', search_query) @@
            to_tsvector('english', s.title || ' ' || s.description || array_to_string(s.tags, ' '))
    ORDER BY
        s.type = 'post' DESC,
        s.content_date DESC NULLS LAST,
        rank DESC
    LIMIT page_size OFFSET page_offset;
END;
$$ LANGUAGE plpgsql;