未読のページにランダムジャンプするUserScript：ページを開かずに未読を判定するver

ページを開かずに未読を判定するver

scrapbox.PageMenu.addMenu({
  title: 'Jump to an unread page',
  image: 'https://img.icons8.com/ios/180/shuffle.png',
  onClick: async () => {
  	const project = scrapbox.Project.name;
    const pages = scrapbox.Project.pages.filter(
      page => page.exists && page.title !== scrapbox.Page.title
    );
    const getNextPage = async () => {
      const title = pages[Math.floor(Math.random() * pages.length)].title;
      const nextPage = await fetch(`/api/pages/${project}/${encodeURIComponent(title)}`);
      return await nextPage.json();
    }
    let isUnread = false;
    let count = 0;
    while (!isUnread) {
      const nextPage = await getNextPage();
      console.log(`${++count}: /${project}/${nextPage.title}`);
      let isUnread = nextPage.lines.some(line => nextPage.lastAccessed < line.updated);
      if (isUnread) { location.href = `/${project}/${encodeURIComponent(nextPage.title)}`; }
    }
  },
});