bene-we · March 26, 2025 16:59 · bene-we · May 3, 2024 · bene-we · May 3, 2024
diff --git a/README.md b/README.md
diff --git a/calculateAge.gs b/calculateAge.gs
 const CALENDAR_ID = "[email protected]";
 const TAG_NAME = 'calculatedAge';
 const FORCE_OVERWRITE = false;

 // Control for how many years in the future the age should be calculated
 // Set to `1` to only cover the current year
 const CALCULATE_FOR_YEARS = 2;

 // Set to `true` to enable debug logging
 const DEBUG = false;

 /*
 * Calculate the age of birthday people in each year and add a short note in the description
 */
 function calculateAge() {
  // Get Calendar 'Birthdays'
  const birthdayCal = CalendarApp.getCalendarById(CALENDAR_ID);

  const yearOfExecution = (new Date()).getFullYear()

  for (var i = 0; i < CALCULATE_FOR_YEARS; i++) {

    // Select date range of the year that is currently processed
    const currentYear = yearOfExecution + i;
    const start = new Date(currentYear + '-01-01');
    const end = new Date(currentYear + '-12-31');

    // Fetch events from Birthday Calendar
    var birthdays = birthdayCal.getEvents(start, end);

    // Filter Birthdays out of Default Calendar (if no specific Birthday Calendar is present)
    // birthdays = birthdays.filter(filterBirthdays);

    if (DEBUG) {
      Logger.log(`Scanning ${birthdays.length} birthdays in year ${currentYear} ...`)
    }

    for (var j = 0; j < birthdays.length; j++) {
      e = birthdays[j];

      // Year of birth is stored in the Location field of the event
      const birthYear = e.getLocation()
      const birthYearIsNotEmpty = birthYear !== ""

      if (birthYearIsNotEmpty) {
        const descriptionIsEmpty = e.getDescription() === ""
        const tagIsEmpty = isNaN(parseInt(e.getTag(TAG_NAME)))

        // Calculate the age if it has not been done before OR `FORCE_OVERWRITE` is true
        if ((descriptionIsEmpty && tagIsEmpty) || FORCE_OVERWRITE) {

          const calculatedAge = Math.round(currentYear - birthYear);

          // Customize the description here
          const description = e.getTitle() + ' wird heute ' + calculatedAge + ' Jahre!'
          e.setDescription(description);

          // Save calculated age in tag
          e.setTag(TAG_NAME, calculatedAge);

          if (DEBUG) {
            const logEntry = {
              name: e.getTitle(),
              birthyear: e.getLocation(),
              currentYear: Math.round(currentYear),
              calculatedAge: Math.round(calculatedAge),
            }

            Logger.log(`${description} \n ${JSON.stringify(logEntry, null, 2)}`)
          }
        }
      }
    }
  }
 }

 /*
 * Filter the birthdays out of the fetched events
 * Add additional filters if you don't have a specific Birthday Calendar
 */
 function filterBirthdays(event) {
  // Add filter here (e.g. event.getColor === CalendarApp.Color.YELLOW)
  return event.isAllDayEvent();
 }
	const CALENDAR_ID = "[email protected]";
	const TAG_NAME = 'calculatedAge';
	const FORCE_OVERWRITE = false;

	// Control for how many years in the future the age should be calculated
	// Set to `1` to only cover the current year
	const CALCULATE_FOR_YEARS = 2;

	// Set to `true` to enable debug logging
	const DEBUG = false;

	/*
	* Calculate the age of birthday people in each year and add a short note in the description
	*/
	function calculateAge() {
	// Get Calendar 'Birthdays'
	const birthdayCal = CalendarApp.getCalendarById(CALENDAR_ID);

	const yearOfExecution = (new Date()).getFullYear()

	for (var i = 0; i < CALCULATE_FOR_YEARS; i++) {

	// Select date range of the year that is currently processed
	const currentYear = yearOfExecution + i;
	const start = new Date(currentYear + '-01-01');
	const end = new Date(currentYear + '-12-31');

	// Fetch events from Birthday Calendar
	var birthdays = birthdayCal.getEvents(start, end);

	// Filter Birthdays out of Default Calendar (if no specific Birthday Calendar is present)
	// birthdays = birthdays.filter(filterBirthdays);

	if (DEBUG) {
	Logger.log(`Scanning ${birthdays.length} birthdays in year ${currentYear} ...`)
	}

	for (var j = 0; j < birthdays.length; j++) {
	e = birthdays[j];

	// Year of birth is stored in the Location field of the event
	const birthYear = e.getLocation()
	const birthYearIsNotEmpty = birthYear !== ""

	if (birthYearIsNotEmpty) {
	const descriptionIsEmpty = e.getDescription() === ""
	const tagIsEmpty = isNaN(parseInt(e.getTag(TAG_NAME)))

	// Calculate the age if it has not been done before OR `FORCE_OVERWRITE` is true
	if ((descriptionIsEmpty && tagIsEmpty) \|\| FORCE_OVERWRITE) {

	const calculatedAge = Math.round(currentYear - birthYear);

	// Customize the description here
	const description = e.getTitle() + ' wird heute ' + calculatedAge + ' Jahre!'
	e.setDescription(description);

	// Save calculated age in tag
	e.setTag(TAG_NAME, calculatedAge);

	if (DEBUG) {
	const logEntry = {
	name: e.getTitle(),
	birthyear: e.getLocation(),
	currentYear: Math.round(currentYear),
	calculatedAge: Math.round(calculatedAge),
	}

	Logger.log(`${description} \n ${JSON.stringify(logEntry, null, 2)}`)
	}
	}
	}
	}
	}
	}

	/*
	* Filter the birthdays out of the fetched events
	* Add additional filters if you don't have a specific Birthday Calendar
	*/
	function filterBirthdays(event) {
	// Add filter here (e.g. event.getColor === CalendarApp.Color.YELLOW)
	return event.isAllDayEvent();
	}