export const SCENE_URL = window.location.pathname.replace(
  /\/(pc|mobile)\/index.html$/,
  "/scene/syjy.html?m=SG-SkJEj1Vhf7l"
);

export const extractText = (html) => {
  // 提取纯文本，去掉HTML标签
  const tmpDiv = document.createElement("div");
  tmpDiv.innerHTML = html;
  return tmpDiv.innerText.trim();
};

export const findKeywordContext = (text, keyword, radius = 20) => {
  const index = text.indexOf(keyword);
  if (index === -1) {
    return null;
  }

  const start = Math.max(0, index - radius);
  const end = Math.min(text.length, index + keyword.length + radius);

  return text.substring(start, end);
};

export const flattenData = (query, list, parentTitles = [], path = []) => {
  const result = [];
  list.forEach((item, index) => {
    const titles = [...parentTitles, item.title];
    const currentPath = [...path, index];

    if (item.content) {
      const contentText = extractText(item.content).replace(/[\n\s]/g, "");

      if (contentText.indexOf(query) > -1) {
        result.push({
          value: currentPath.join(","),
          label: `${titles.join(" | ")} | ${findKeywordContext(
            contentText,
            query
          )}`,
        });
      }
    }
    if (item.children) {
      result.push(...flattenData(query, item.children, titles, currentPath));
    }
  });
  return result;
};