/** Explicit switches take precedence over the common beat-sync phrase shortcut. */
export function resolveSmartEditIntent<
  T extends {
    mode?: string;
    prompt?: string;
    beatSync?: boolean;
    variants?: number;
    music?: { url: string };
  },
>(draft: T) {
  const prompt = draft.prompt || "";
  const beatSync =
    draft.beatSync ??
    (/卡点|beat[ -]?sync/i.test(prompt) &&
      !/(?:不|不要|无需|不用|取消|关闭).{0,5}卡点|no beat[ -]?sync/i.test(prompt));
  return { ...draft, beatSync, variants: draft.variants ?? (draft.mode === "ads" ? 3 : 1) };
}
export function assertBeatMusic(draft: { beatSync?: boolean; music?: { url: string } }) {
  if (draft.beatSync && !draft.music?.url) throw Error("音乐卡点需要先选择或上传背景音乐");
}