feat: page, sort and search stored media and delete several at once in the admin API

db/queries/media.sql

@@ -1,10 +1,19 @@
 -- name: ListStoredMedia :many
-SELECT media_key::text AS media_key, source, track_id, title, media_size::bigint AS media_size, cover_key, prepared_at, last_played_at FROM tracks
-WHERE media_key IS NOT NULL
-ORDER BY prepared_at DESC, track_id;
+-- 曲目 ID 按字节比较，排序不随数据库的 locale 变化。
+SELECT media_key::text AS media_key, source, track_id, title, artist, media_size::bigint AS media_size, cover_url, cover_key, prepared_at, last_played_at FROM tracks
+WHERE media_key IS NOT NULL AND title ILIKE '%' || @pattern::text || '%' ESCAPE '\'
+ORDER BY CASE WHEN @sort::text = 'stored' THEN prepared_at END DESC,
+         CASE WHEN @sort::text = 'idle' THEN last_played_at END ASC NULLS FIRST,
+         CASE WHEN @sort::text = 'size' THEN media_size END DESC,
+         track_id COLLATE "C"
+LIMIT @page_size::bigint OFFSET @skip::bigint;
+
+-- name: CountStoredMedia :one
+SELECT count(*) AS total, coalesce(sum(media_size), 0)::bigint AS total_bytes FROM tracks
+WHERE media_key IS NOT NULL AND title ILIKE '%' || @pattern::text || '%' ESCAPE '\';
 
 -- name: StoredMedia :one
-SELECT media_key::text AS media_key, source, track_id, title, media_size::bigint AS media_size, cover_key, prepared_at, last_played_at FROM tracks
+SELECT media_key::text AS media_key, source, track_id, title, artist, media_size::bigint AS media_size, cover_url, cover_key, prepared_at, last_played_at FROM tracks
 WHERE media_key = @media_key::text;
 
 -- name: DeleteStoredMedia :exec