import "server-only";

function shouldReplaceClarificationLikeMessage(message?: string) {
  if (!message) return true;
  const normalized = message.trim();
  if (!normalized) return true;
  return /[?？]$/.test(normalized) || /哪一张|哪个|请先确认/.test(normalized);
}

export function resolveClarificationBypass(params: {
  text: string;
  hasCurrentImageInput: boolean;
  hasHistoryImageInput: boolean;
  hasCanvasSelection: boolean;
  targetResolutionMode?: string | null;
  executionMode?: string;
  friendlyMessage?: string;
}) {
  const latestUserText = String(params.text || "").trim();
  if (
    !params.hasCurrentImageInput &&
    !params.hasHistoryImageInput &&
    latestUserText.length <= 0
  ) {
    return {
      shouldBypass: false,
      nextFriendlyMessage: params.friendlyMessage,
    };
  }

  const canForceByIntent = /改|调整|优化|换|替换|去掉|抠|重绘|增强|修|处理|按照|按|保留|统一|色差|背景|清晰|风格/.test(
    latestUserText,
  );
  const hasForceTargetHint =
    params.hasCanvasSelection ||
    params.targetResolutionMode === "text_reference" ||
    /第[一二三四五六七八九十\d]+张|左|右|上|下|中间|选中/.test(latestUserText);
  const canForceExecution =
    (params.executionMode === "edit_image" ||
      params.executionMode === "generate_image" ||
      params.executionMode === "generate_video") &&
    canForceByIntent &&
    hasForceTargetHint;

  if (!canForceExecution) {
    return {
      shouldBypass: false,
      nextFriendlyMessage: params.friendlyMessage,
    };
  }

  return {
    shouldBypass: true,
    nextFriendlyMessage: shouldReplaceClarificationLikeMessage(params.friendlyMessage)
      ? "收到，我将按你的当前需求直接执行。"
      : params.friendlyMessage,
  };
}

export function resolveClarificationMessage(params: {
  clarificationQuestion?: string;
  friendlyMessage?: string;
}) {
  return (
    params.clarificationQuestion ||
    params.friendlyMessage ||
    "我先确认一下，你希望我优先处理哪一部分？"
  );
}