Function getSessionKey

music_hub/music_hub.ts:226–231

(msg: Api.Message)

function parseIndex(text?: string): number | null {
  if (!text || !/^\d+$/.test(text)) return null;
  const index = Number.parseInt(text, 10);
  return index >= 1 ? index : null;
}

function clampPage(page: number, totalPages: number): number {
  return Math.min(Math.max(page, 1), Math.max(totalPages, 1));
}