calendar-charge-code-add

internalCharge

function myFunction() {
  //---------The following variables are meant to be changed to meet your specfic needs---------
  const daysOut = 14;
  const regex = /([\(|\[])?\S+?\-\d+([\)|\]])?($|\s+)/;
  const regexCapture = /(?:[\(|\[])?(\S+?\-\d+)([\)|\]])?($|\s+)/g;

 // An example, modify as required
  const customerDomain = {
    "coke.com": "COKE-10",
    "pepsi.com": "PEP-89",
    "acme.com": "ACME-111",
    "acme-corp.com": "ACME-111",
    };
  
  //---------The preceeding variables are meant to be changed to meet your specfic needs---------
  
  const customerKeys = Object.keys(customerDomain);

  function getMatches(string, regex, index) {
    index || (index = 1); // default to the first capturing group
    var matches = [];
    var match;
    while (match = regex.exec(string)) {
      matches.push(match[index]);
    }
    return matches;
  }

  var startDate = new Date();
  
  var endDate   = new Date(new Date().setDate(new Date().getDate() + daysOut));
  var calendar = CalendarApp.getDefaultCalendar();

  var events = calendar.getEvents(startDate, endDate);
    
  for (var i = 0; i < events.length; i++){

    var originalSender = events[i].getOriginalCalendarId();
    var subjectLine = events[i].getTitle().toString();
    var guests = events[i].getGuestList().map(function(eventGuest){return eventGuest.getEmail();});


    // Code to set charge code based on domain suffix
    if (!subjectLine.match(regex)) {
      var address = originalSender.split('@').pop()
      if (!customerKeys.includes(address)) {
        continue
      }
      Logger.log("Matched NOT REGEX: " + subjectLine + " " + address + " " + customerKeys.includes(address));
      var newTitle = subjectLine + " [" + customerDomain[address]  + "]"
        events[i].setTitle(newTitle)
        Logger.log("Set new title of " + newTitle)
    }    
  }
}