Google Apps Script for creating Google Calendar events via Fulcrum Webhooks

scripts.gs

// Google Apps Script for creating Google Calendar events via Fulcrum Webhooks

// replace your Fulcrum API token here
var token = "";
var createEventId = "";

function doPost(e) {
  return handleResponse(e);
}

function handleResponse(e) {
  var jsonString = e.postData.getDataAsString();
  var payload = JSON.parse(jsonString);
  // replace your form id here
  var form = "46e2df6b-6e51-4008-ab47-a140ef3694f3";
  var record_id = payload.data.id;
  // replace your field keys below
  var title = payload.data.form_values["7f36"];
  var start_unix = parseInt(payload.data.form_values["88bd"]);
  var stop_unix = parseInt(payload.data.form_values["1755"]);
  var iCalId = payload.data.form_values["d922"];

  var startTime = new Date(start_unix);
  var stopTime = new Date(stop_unix);

  if (payload.data.form_id === form) {
    if (payload.type === "record.create") {
      createEvent();
      updateRecord(record_id, createEventId);
    } else if (payload.type === "record.update") {
      updateEvent();
    } else if (payload.type === "record.delete") {
      deleteEvent();
    }
  }

  function createEvent() {
    var event = CalendarApp.getDefaultCalendar().createEvent(title, startTime, stopTime, {description: "<a href='https://web.fulcrumapp.com/records/" + record_id + "'>Desktop Link</a><br><a href='https://www.fulcrumapp.com/action/#edit-record?form_id=" + form + "&record_id=" + record_id + "'>Mobile Link</a>"});
    createEventId = event.getId();
  }

  function updateEvent() {
    CalendarApp.getEventById(iCalId).setTime(startTime, stopTime).setTitle(title);
  }

  function deleteEvent() {
    CalendarApp.getEventById(iCalId).deleteEvent();
  }

  // this function will write the Google Calendar EventID back to the Fulcrum record for updating/deleting
  function updateRecord(record, event) {
    var url = "https://api.fulcrumapp.com/api/v2/records/" + record + ".json";
    var data = UrlFetchApp.fetch(url, {
      "method": "GET",
      "headers": {
        "X-ApiToken": token,
        "Accept": "application/json"
      }
    });
    var json = JSON.parse(data);

    // replace your field key here
    json.record.form_values['d922'] = event;
    delete json.record.changeset_id;

    var update = UrlFetchApp.fetch("https://api.fulcrumapp.com/api/v2/records.json", {
      "method": "POST",
      "contentType": "application/json",
      "payload": JSON.stringify(json),
      "headers": {
        "X-ApiToken": token,
        "Accept": "application/json"
      }
    });

    Logger.log(update);
  }
}