App Script yearly trigger

[Clément Milewski]

Greetings,

I wish to set up a yearly trigger for a script to send an email (e.g a company wishing its customers a merry Christmas every year). I am somewhat lost in the logic though. I have a couple ideas, but I am not even sure if the logic is right. My first attempt was :

function myFuncToTrigger () {

  //...

}

function myTrigger () {

  var currentDate = new Date();

  var year = currentDate.getFullYear();

  ScriptApp.newTrigger(myFuncToTrigger ).timeBased().atDate(year, 0, 1).create();

}

I tried replacing atDate by eveMinutes(4) to check the behaviour, to no avail. I also thought of adding the

ScriptApp.newTrigger () into myFuncToTrigger (), but was afraid that would mean a trigger creation apocalypse (where the code

to create a new trigger is executed every 5 minutes, resulting in 2 triggers executing the code every 5 minutes, creating 2 new triggers etc, doubling every 5 minutes).

Could someone just point me to the right direction please ?

Cheers,

[Edward Wu]

Here's what I use to schedule once-a-year triggers. You need to manually create the first one (i.e. manually set the trigger to run scheduleNextYearsPrep at 12/31/21 at 11pm).

When that runs on 12/31/21, it'll schedule *next* year's trigger. etc.

And prepYearEnd would be the function you want to run at that time.

function scheduleNextYearsPrep(){
  var date = new Date();
  var year = date.getYear()+1;
 
  var d = new Date(year, 11, 31, 23); // remember, month starts at ZERO
ScriptApp.newTrigger("prepYearEnd")
   .timeBased()
   .at(d)
   .create();
  ScriptApp.newTrigger("scheduleNextYearsPrep")
   .timeBased()
   .at(d)
   .create();

}

function prepYearEnd(){

  // do your actions here

}

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