google-caleandar.gs

function main() {
  var events = listUpEventOfCalendar();
  var list = formatEvents(events);

  Logger.log(list);
  
  postToSlack(list);
}

function listUpEventOfCalendar() {
  var events = [];
  var cals = CalendarApp.getAllCalendars();

  cals.forEach (function (cal) {
    var calEvents = cal.getEventsForDay(new Date());
    calEvents.forEach (function (calEvent) {
      events.push(calEvent);
    });
  });

  events.sort(function(a, b) {
    return (a.getStartTime() <= b.getStartTime() ? -1 : 1);
  });

  return events;
}

function formatEvents(events) {
  var list   = "";
  var titles = [];

  events.forEach (function (e) {
    var creators = e.getCreators() + "";
    var s           = creators.replace(/@.+/, '') + ": ";
    var title       = e.getTitle();
    var startTime   = e.getStartTime();
    var endTime     = e.getEndTime();
    var location    = e.getLocation();

    if (
      titles.indexOf(title) != -1 ||
      !(title.match(/foo/) || title.match(/bar/))
    ) {
      return; 
    }

    titles.push(title);

    if (e.isAllDayEvent()) {
      s += Utilities.formatDate(startTime, "GMT+0900", "MM/dd");
      s += " 終日   ";
    } else {
      s += Utilities.formatDate(startTime, "GMT+0900", "HH:mm");
      s += Utilities.formatDate(endTime, "GMT+0900", "〜HH:mm ");
      if (location != "") {
        s += "@" + location + " ";
      }
    }
    s += title;

    list += s + "\n";
  });

  return list;
}

function postToSlack(list) {
  var now = new Date();
  var nowDay = now.getDay();
  if ([0, 6].indexOf(nowDay) !== -1) return;
  
  var week = ['日', '月', '火', '水', '木', '金', '土'];
  var nowDate = ((now.getMonth() + 1) + '/' + now.getDate() + ' (' + week[nowDay] + ')');
  if (list == "") list = "\n.";
  var payload = {
    "text": nowDate + "の予定をお知らせします。\n```" + list + "```\n※スケジュールは随時更新されます。\n最新のスケジュールはGoogleカレンダーで各自確認してください。\nhttps://www.google.com/calendar/",
    "channel": "#announce_deployment", // 送信したいチャンネル
    "username": "GoogleCalendar", // 送信者名
    "icon_emoji": ":timer_clock:" // 送信時のアイコン
  }

  var response = UrlFetchApp.fetch(
    "https://hooks.slack.com/services/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx", 
    {
      "method": "POST",
      "payload": JSON.stringify(payload)
    }
  );
  return response.getContentText("UTF-8");
}