Attendance Trigger.js

function dailyTrigger() {
  const end = new Date();
  const start = new Date();
  
  // the first of the current month
  start.setDate(1);

  // the last day of the current month
  if (end.getMonth() === 11) {
    end.setDate(31);  // 31 days in Dec, always
  } else {
    // the 0 day of the next month is the last day of current month
    end.setMonth(end.getMonth() + 1);
    end.setDate(0);
  }

  // convert to YYYY-DD-MM ... make this bullet-proof
  const start_date = `${start.getFullYear()}-${(start.getMonth()+1).toString().padStart(2, '0')}-${start.getDate().toString().padStart(2, '0')}`;
  const end_date = `${end.getFullYear()}-${(end.getMonth()+1).toString().padStart(2, '0')}-${end.getDate().toString().padStart(2, '0')}`;

  // call
  run_MB_HRAttendance_byDate(start_date, end_date);
}

function run_MB_HRAttendance_byDate(start_date, end_date) {

    const modules = MB_OA_Gsheets.modules();
    // ...

    const year_group_ids = [];  // list of year_group_ids
    // const start_date = 'YYYY-MM-DD';
    // const end_date = 'YYYY-MM-DD';

}