Create recurring Google Calendar events from Google Sheets only on weekdays - google-apps-script

Question

The following code below works perfectly. However, I now need to have recurring events to appear only during the weekdays (M-F).
If for example I set up a recurring meeting on 9/2/2014, future meetings will eventually fall on a weekend.
How can these recurring meetings only show up on weekdays?
For example, if meeting falls on a Saturday, move it to the day before (Friday). On the other hand, if meeting falls on a Sunday, move it to the day after (Monday).
is this possible?
I have tried using the CalendarApp.Weekday.MONDAY, etc...function but it ends up writing over the .addMonthlyRule() function from the code...
// Date | Title | Start Time | End Time | Location | Description | Recurring (months) | EventID
function onOpen() {
var sheet = SpreadsheetApp.getActiveSpreadsheet();
var entries = [{
name : "Export Events",
functionName : "exportEvents"
}];
sheet.addMenu("Calendar Actions", entries);
};
/*** Export events from spreadsheet to calendar */
function exportEvents() {
var sheet = SpreadsheetApp.getActiveSheet();
var headerRows = 1; // Number of rows of header info (to skip)
var range = sheet.getDataRange();
var data = range.getValues();
var calId = "airliquide.com_ro3r20vk2rhm506fr2toq4vh5c#group.calendar.google.com";
var cal = CalendarApp.getCalendarById(calId);
for (i in data) {
if (i < headerRows) continue; // Skip header row(s)
var row = data[i];
var date = new Date(row[0]); // First column
var title = row[1]; // Second column
var tstart = setTimeToDate(date,row[2]);
var tstop = setTimeToDate(date,row[3]);
Logger.log('date = '+date+'tstart = '+tstart+' tstop = '+tstop);
var loc = row[4];
var desc = row[5];
var times = row[6]
var id = row[7];
// Check if event already exists, update it if it does
try {
var event = cal.getEventSeriesById(id);
event.setTitle('got you');// this is to "force error" if the event does not exist, il will never show for real ;-)
}catch(e){
var newEvent = cal.createEvent(title, tstart, tstop, {description:desc,location:loc}); // create a "normal" event
row[7] = newEvent.getId(); // Update the data array with event ID
Logger.log('event created');// while debugging
var event = cal.getEventSeriesById(row[7]);// make it an event Serie
}
event.setTitle(title);
event.setDescription(desc);
event.setLocation(loc);
var recurrence = CalendarApp.newRecurrence().addMonthlyRule().interval(times)
//.onlyOnWeekdays(
//[CalendarApp.Weekday.MONDAY, CalendarApp.Weekday.TUESDAY, CalendarApp.Weekday.WEDNESDAY, CalendarApp.Weekday.THURSDAY, CalendarApp.Weekday.FRIDAY]);
event.setRecurrence(recurrence, tstart, tstop);// we need to keep start and stop otherwise it becomes an AllDayEvent if only start is used
}
range.setValues(data);
}
function setTimeToDate(date,time){
var t = new Date(time);
var hour = t.getHours();
var min = t.getMinutes();
var sec = t.getSeconds();
var dateMod = new Date(date.setHours(hour,min,sec,0))
return dateMod;
}

Answer 1

You can get the day of the week by using the following:
var d = new Date();
var n = d.getDay();
Sunday is 0, Monday is 1 etc.