slack 2fa

function myFunction() {
  const members = getMembers();
  const hasNot2FAMembers = filterHasNot2FAMembers(members);
  if (hasNot2FAMembers.length === 0) {
    Logger.log("no 2FA members, ok");
    return;
  }
  const attachments = createAttachments(hasNot2FAMembers);
  postSlackAttachments(attachments);
  inviteMembers(hasNot2FAMembers);
}

function getMembers() {
  const properties = PropertiesService.getScriptProperties();
  const token = properties.getProperty('SLACK_TOKEN');
  const url = "https://slack.com/api/users.list";
  const options = {
    "headers": { "Authorization": `Bearer ${token}` },
    "contentType": "application/json"
  };
  const response = UrlFetchApp.fetch(url, options);
  const json = JSON.parse(response.getContentText());
  return json.members;
}

function filterHasNot2FAMembers(members) {
  const result = members.filter(a => !a.deleted && !a.is_bot && !a.is_restricted && !a.has_2fa && a.name !== "slackbot");
  Logger.log({
    members: members.length,
    result: result.length
  });
  return result;
}

function createAttachments(members) {
  return members.map(function(a) {
    return {
      "color": "good",
      "fields": [
        {
           "title": "real_name",
           "value": a.real_name || "-",
           "short": true
        },
        {
           "title": "display_name",
           "value": a.diaplay_name || "-",
           "short": true
        },
        {
           "title": "has_2fa",
          "value": a.has_2fa ? "true" : "false",
           "short": true
        },
      ],
    };
  });
}

function postSlackAttachments(attachments) {
  const webhookUrl = PropertiesService.getScriptProperties().getProperty('SLACK_WEBHOOK');
  var msgJson = {
    "username": "",
    "attachments": attachments
  };
  var payload = JSON.stringify(msgJson);

  var options = {
    "method": "post",
    "contentType": "application/json",
    "payload": payload
  };

  const result = UrlFetchApp.fetch(webhookUrl, options);
}

function inviteMembers(members) {
  const properties = PropertiesService.getScriptProperties();
  const token = properties.getProperty('SLACK_TOKEN');
  const channel = properties.getProperty('SLACK_CHANNEL');
  const url = "https://slack.com/api/conversations.invite";
  const options = {
    "headers": { "Authorization": `Bearer ${token}` },
    "contentType": "application/json",
    "method": 'post',
    "payload": JSON.stringify({"channel": channel, "users": members.map(a => a.id).join(",")})
  };
  const response = UrlFetchApp.fetch(url, options);
  const json = JSON.parse(response.getContentText());
}