import {
  PAGE_MINDSPACE_PUBLIC_URL_PATTERN,
  PAGE_REFINE_DETAIL_PATTERN,
} from './intent/patterns.mjs';

/** MindSpace public HTML path inside a full URL (userId or username slug). */
export const MINDSPACE_PUBLIC_HTML_PATH_PATTERN =
  /(?:https?:\/\/[^\s/]+)?\/?mindspace\/[^/\s"'<>]+?\/(public\/[\w.-]+\.html)/iu;

export function extractMindSpacePublicHtmlPath(text) {
  const normalized = String(text ?? '').trim();
  if (!normalized) return null;
  const match = normalized.match(MINDSPACE_PUBLIC_HTML_PATH_PATTERN);
  const relativePath = match?.[1]?.replace(/\\/g, '/').trim();
  return relativePath || null;
}

export function isWechatPageRefineRequestText(text) {
  const normalized = String(text ?? '').trim();
  if (!normalized) return false;
  if (PAGE_REFINE_DETAIL_PATTERN.test(normalized)) return true;
  return (
    PAGE_MINDSPACE_PUBLIC_URL_PATTERN.test(normalized)
    && /(?:页面|网页|更新|详细|改|完善|补充)/iu.test(normalized)
  );
}

/**
 * Extra Cursor/Goose page prompt block: pin edit target file when URL or refine intent is present.
 */
export function buildPageRefineTargetPromptBlock(text) {
  const normalized = String(text ?? '').trim();
  if (!normalized || !isWechatPageRefineRequestText(normalized)) return '';

  const relativePath = extractMindSpacePublicHtmlPath(normalized);
  if (relativePath) {
    return [
      '【改页目标文件（从用户消息解析，必须优先改此文件）】',
      `- 相对路径：${relativePath}`,
      '- 用 edit_file 更新该 HTML；禁止新建无关页面或只回复文字说明。',
      '- 按用户要求补充/修改内容，保留其余仍有效的结构与样式。',
      '',
    ].join('\n');
  }

  return [
    '【改页任务】用户要求细化或更新已有页面。',
    '- 在工作区查找最相关的 public/*.html，用 edit_file 更新原文件，不要新建无关页面。',
    '- 禁止只回复文字说明而不落盘。',
    '',
  ].join('\n');
}

/** Copy-paste WeChat message template for page refine (e.g. Tang). */
export function buildWechatPageRefineUserMessageTemplate({
  publicHtmlPath = 'public/your-page.html',
  requirements = '请把页面改更详细（示例：行程细化到每个时间节点）',
  publicUrl = '',
} = {}) {
  const pathLine = String(publicHtmlPath ?? '').trim();
  const reqLine = String(requirements ?? '').trim();
  const urlLine = String(publicUrl ?? '').trim();
  return [
    '改页任务（请直接改原文件，不要新建页面）',
    pathLine ? `文件：${pathLine}` : '',
    reqLine ? `要求：${reqLine}` : '',
    urlLine ? `链接：${urlLine}` : '',
  ].filter(Boolean).join('\n');
}