/** WeChat channel intent patterns — not shared with H5 chat-skills routing. */

export const PAGE_GENERATE_PATTERN =
  /(?:生成|创建|做|写|帮我.*(?:生成|创建|做|写)).*(?:html|页面|网页|page|文件)/iu;

export const PAGE_GENERATE_NEGATION_PATTERN =
  /(?:不要|无需|不用|别|不需要)\s*(?:再\s*)?(?:生成|创建|制作|做|写)\s*(?:任何|一个|新的)?\s*(?:html|页面|网页|page|文件)/iu;

export const DOCX_DOWNLOAD_PATTERN =
  /(?:(?:word|docx|\.docx|\.doc|文档).*(?:下载|链接|导出|给我)|(?:下载|导出|提供|给我).*(?:word|docx|\.docx|\.doc|文档))/iu;

export const TOPIC_RESET_PATTERN =
  /^(换(个)?话题|换新会话|新会话|开新会话|另开会话|清空上下文|新问题|忽略之前|不管之前|重新开始|reset)$/iu;

export const TOPIC_RESET_LOOSE_PATTERN = /忽略.*之前|不要管.*之前|别管.*之前/u;

export const STATUS_PROBE_PATTERN = /^[?？]+$/u;

export const GREETING_PATTERN =
  /^(你好|您好|在吗|在不在|嗨|hi|hello|hey)[!！。.\s]*$/iu;

export const CONNECTIVITY_TEST_PATTERN = /^(测试\s*\d*|test\s*\d*)[!！。.\s]*$/iu;

export function isPageGenerateText(text) {
  const normalized = String(text ?? '').trim();
  if (!normalized) return false;
  if (PAGE_GENERATE_NEGATION_PATTERN.test(normalized)) return false;
  return PAGE_GENERATE_PATTERN.test(normalized);
}

export function isTopicResetText(text) {
  const normalized = String(text ?? '').trim();
  if (!normalized) return false;
  return TOPIC_RESET_PATTERN.test(normalized) || TOPIC_RESET_LOOSE_PATTERN.test(normalized);
}

export function wantsDocxDownload(text) {
  const normalized = String(text ?? '').trim();
  if (!normalized) return false;
  return DOCX_DOWNLOAD_PATTERN.test(normalized);
}