arXivの最新論文を毎日slackに投稿するGoogle App Script

postSlack.gs

function postslack(entry) {
  // WebHook
  const url = 'https://hooks.slack.com/services/{YOUR_SECRET}';

  const content = {
    'username': '{YOUR_NAME}',
    'text': `<${entry.url}|${entry.title}>\n${entry.summary}`,
  };

  const options = {
    'method': 'post',
    'content': 'applications/json',
    'payload': JSON.stringify(content),
  };

  UrlFetchApp.fetch(url, options);
}

readrss.gs

function readrss() {
  // 土日なら即終了
  const now = new Date();
  if (now.getDay() === 0 || now.getDay() === 6) return;

  // CV分野の投稿順で最新3件を取得
  const url = 'http://export.arxiv.org/api/query?search_query=all:%22cs.CV%22&start=0&max_results=3&sortBy=submittedDate&sortOrder=descending';
  const xml = UrlFetchApp.fetch(url).getContentText();

  const xmlDocs = XmlService.parse(xml);
  const namespace = XmlService.getNamespace('', 'http://www.w3.org/2005/Atom');
  const doc = xmlDocs.getRootElement().getChildren('entry', namespace);

  const plain = (str) => {
    return str.replace(/\r?\n/g, '');
  }

  const entries = doc.forEach((d) => {
    const enTitle = plain(d.getChild('title', namespace).getText());

    const enSummary = plain(d.getChild('summary', namespace).getText());
    const jaSummary = LanguageApp.translate(enSummary, 'en', 'ja');

    const url = d.getChild('id', namespace).getText();

    const entry = {
      title: enTitle,
      summary: jaSummary.replace(/。/g, '。\n'),
      url,
    };

    postslack(entry);
  });
}