FEELCYCLEから送られてくるメールを元にGoogleカレンダーに登録するGoogleAppsScript

setCalendar.js

function setMyGoogleCalendar(){
  var gmailThread = specifyMailFromFeelcycle();
  var lessonList = parsePlainBody(gmailThread);
  createGoogleCalendarEvent(lessonList);
  removeGoogleCalendarEvent(lessonList);
}

function specifyMailFromFeelcycle(){
  var gmailThreads = GmailApp.search("from:feelcyclem@feelcycle.com FEELCYCLE ご予約登録");
  // Get the registering threads
  var registeringThread = gmailThreads[0];
  
  gmailThreads = GmailApp.search("from:feelcyclem@feelcycle.com FEELCYCLE ご予約キャンセル");
  // Get cancelling threads
  var cancelingThread = gmailThreads[0];
  var thread = new Object();
  thread.registeringThread = registeringThread;
  thread.cancelingThread = cancelingThread;
  return thread;
}

function parsePlainBody(gmailThread){
  if( gmailThread.registeringThread === null || 
     gmailThread.registeringThread === undefined ||
     gmailThread.registeringThread === "") return Logger.log("Please check \"gmailThread.registeringThread\"");
  var registeringMessages = gmailThread.registeringThread.getMessages();
  var registeringLessonList = [];
  setMessageToList(registeringMessages, registeringLessonList);
  if( gmailThread.cancelingThread === null || 
     gmailThread.cancelingThread === undefined ||
     gmailThread.cancelingThread === "") return;
  var cancelingMessages = gmailThread.cancelingThread.getMessages();
  var cancelingLessonList = [];
  setMessageToList(cancelingMessages, cancelingLessonList);
  var lessonList = {
    registeringLessonList: registeringLessonList,
    cancelingLessonList: cancelingLessonList
  }
  Logger.log(JSON.stringify(lessonList, " "));
  return lessonList;
}

function setMessageToList(messages, list){
  messages.forEach(function(value, index){
    var fsLesson = new Object();
    var plainBody = value.getBody();
    // var result = RegExp.prototype.exec()
    // result[0] = The full string of characters matched
    // result[1] = The parenthesized substring matches, if any. The number of possible parenthesized substrings is unlimited.
    // See also: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp/exec
    fsLesson.date = /日時： (.*)<br \/>/.exec(plainBody)[1].replace(/(\d{4})年(\d{1,2})月(\d{1,2})日(.*)(\d{2}):(\d{2})(.*)?(\d{2}):(\d{2})/, '$1-$2-$3-$5-$6');
    fsLesson.store = /店舗： (.*)<br \/>/.exec(plainBody)[1];
    fsLesson.lessonTitle = /レッスン： (.*)<br \/>/.exec(plainBody)[1];
    fsLesson.instructor = /インストラクター： (.*)<br \/>/.exec(plainBody)[1];
    fsLesson.bikeNo = /バイクナンバー：(.*)<br \/>/.exec(plainBody)[1];
    list[index] = fsLesson;
  });
}

function createGoogleCalendarEvent(lessonList){
  if(lessonList.registeringLessonList === null || 
     lessonList.registeringLessonList === undefined ||
     lessonList.registeringLessonList === "") return Logger.log("Please check \"lessonList.registeringLessonList\"");
  lessonList.registeringLessonList.forEach(function(lesson, index){
    // Lesson time 
    var minutes = 45;
    var lessonTitle = lesson.lessonTitle + " " + lesson.instructor + " #" + lesson.bikeNo + " " + lesson.store;
    var dateList = lesson.date.split("-");
    var lessonDate = new Date(dateList[0], dateList[1], dateList[2], dateList[3], dateList[4], 0);
    var searchResult = CalendarApp.getDefaultCalendar().getEvents(lessonDate, 
                                                                 new Date(lessonDate.getTime() + minutes * 60000),
                                                                  {search: lessonTitle});
    Logger.log(searchResult.length);
    if(searchResult.length === 0){
      var successEvent = CalendarApp.getDefaultCalendar().createEvent(lessonTitle,
                                                                      lessonDate,
                                                                      new Date(lessonDate.getTime() + minutes * 60000));
      Logger.log("Success to create event! EventId: " + successEvent.getId() + " EventTitle: " + successEvent.getTitle());
    }
  });
}
function removeGoogleCalendarEvent(lessonList){
  if(lessonList.cancelingLessonList === null || 
     lessonList.cancelingLessonList === undefined ||
     lessonList.cancelingLessonList === "") return Logger.log("Please check \"lessonList.cancelingLessonList\"");
  lessonList.cancelingLessonList.forEach(function(lesson, index){
    // Lesson time 
    var minutes = 45;
    var lessonTitle = lesson.lessonTitle + " " + lesson.instructor + " #" + lesson.bikeNo + " " + lesson.store;
    var dateList = lesson.date.split("-");
    var lessonDate = new Date(dateList[0], dateList[1], dateList[2], dateList[3], dateList[4], 0);
    var searchResult = CalendarApp.getDefaultCalendar().getEvents(lessonDate, 
                                                              new Date(lessonDate.getTime() + minutes * 60000),
                                                              {search: lessonTitle});
    if(searchResult.length === 0) return;
    searchResult.forEach(function(event, index){
      event.deleteCalendar();
      Logger.log("Success to delete event! EventId: " + event.getId() + " EventTitle: " + event.getTitle());
    });
  });
}