カーシェアの予約時間帯をカレンダーに入れる

carshare-calendarize.gs

const CALENDARIZED_LABEL = "carshare-calendarized";

function isCalendarizable(m) {
  return [
    "新規予約受付のご案内",
    "予約延長受付のご案内",
    "予約変更受付のご案内",
  ].includes(m.getSubject());
}

function extractTime(lines, permlink) {
  const keywordIndex = lines.indexOf("■予約時間");
  if (keywordIndex === -1) {
    throw new Error(`malformed mail: ${permlink}`);
  }
  const start = Utilities.parseDate(
    lines[keywordIndex + 1],
    "JST",
    "yyyy/MM/dd HH:mm～"
  );
  const end = Utilities.parseDate(
    lines[keywordIndex + 2],
    "JST",
    "yyyy/MM/dd HH:mm"
  );
  return { start, end };
}

function extractId(lines, permlink) {
  const keywordIndex = lines.indexOf("■予約番号");
  if (keywordIndex === -1) {
    throw new Error(`malformed mail: ${permlink}`);
  }

  return lines[keywordIndex + 1];
}

function main() {
  const threads = GmailApp.search(
    `from:upr.cssystem@upr-net.co.jp -label:${CALENDARIZED_LABEL}`
  );
  for (const t of threads) {
    for (const m of t.getMessages()) {
      if (isCalendarizable(m)) {
        const lines = m.getPlainBody().split(/\r?\n/);
        const { start, end } = extractTime(lines, t.getPermalink());
        const id = extractId(lines);

        const userProperties = PropertiesService.getUserProperties();
        const eventId = userProperties.getProperty(id);
        const calendar = CalendarApp.getCalendarById(
          "calendar-id@group.calendar.google.com"
        );
        if (eventId == null) {
          const event = calendar.createEvent("カーシェア予約時間", start, end);
          event.setDescription(`予約番号: ${id}\n[remind end time] 15min`);
          userProperties.setProperty(id, event.getId());
        } else {
          const event = calendar.getEventById(eventId);
          event.setTime(start, end);
        }
      } else {
        console.log(`ignore message: ${t.getPermalink()}`);
      }
    }
    t.addLabel(GmailApp.getUserLabelByName(CALENDARIZED_LABEL));
  }
}