Schedule me at the Auslanderbehörde Osnabrück

scheduleMe.js

/**
 * @author Justin Shenk <shenk.justin@gmail.com>
 *
 * This script schedules the next available meeting in a given month by
 * continuous reloading and automatically filling out a form.
 *
 * INSTRUCTIONS:
 * - Replace the personal details below with your information.
 * - Navigate to the scheduling site.
 * - Select iFrame as context: In Firefox, open the Web Console (Tools > Web
 * Developer > Web Console) and paste the following. If you using Chrome, omit
 * the first line, open the console (View > Developer > JavaScript Console) and
 * in the drop-down menu at the top of the console, change 'top' to 'true', then
 * paste the rest.
 * More info on issue in Chrome: https://stackoverflow.com/a/38903747
 * NOTE: This is for educational purposes only.
 * NO GUARANTEES COME WITH THIS SCRIPT. BY USING THIS SCRIPT YOU ACCEPT ALL
 * LIABILITY AND RESPONSIBILITY.
 */

// Firefox-only: change directory to iFrame BEFORE running the script:
// cd(document.getElementsByTagName('iframe')[0]);

var firstName = 'MYFIRSTNAME';
var lastName = 'MYLASTNAME';
var phone = '0176123456';
var email = 'MYEMAIL@gmail.com';
var targetMonth = ''; // all-caps string, eg. OCTOBER
var autoSubmit = false; // submit form automatically (not yet tested)

var delay = 2000; // milliseconds
var monthTimerID = 0;
var timeTimerID = 0;
var confirmed = $(".confirmation_section").css('display') !== 'none';

function showButton() {
  console.log("show apply button");
  // Select booking for one person
  $("#service_apply_button").css("display", "block");
  $("#service_option423").addClass("active");
  $('select>option:eq(1)').attr('selected', true);
  $("#service_apply_button").click();
  var isVisible = $("#service_apply_button").css("display") === 'block';
  if (!isVisible) {
    console.log("try showing apply button again");
    setTimeout(showButton, delay);
  } else {
    setTimeout(selectMonth, delay);
  }
}

function fillOutForm() {
  console.log("filling in my information");
  $("input#register_first_name").val(firstName);
  $("input#register_last_name").val(lastName);
  $("input#register_telephone").val(phone);
  $("input#register_email").val(email);
  $("input#print_ticket").prop('checked', true);
  if (autoSubmit) {
    setTimeout(submitForm, delay);
  }
}

function submitForm() {
  console.log("submitting the form");
  $("#booking_button").click();
}

function selectTime() {
  console.log("picking first time slot");
  $("#times_container div").eq(0).click();
  confirmed = $(".confirmation_section").css('display') !== 'none';
  if (confirmed) {
    console.log("time selection confirmed");
    clearInterval(timeTimerID);
  }
  setTimeout(fillOutForm, delay);
}

function selectDate() {
  var timeslots = $("#times_container div").length;
  if (timeslots > 0) {
    setTimeout(selectTime, 1000);
  } else {
    console.log("picking first date");
    $(".ui-datepicker-calendar a").eq(0).click();
    setTimeout(selectDate, delay);
  }
}

function nextMonth(targetMonth) {
  var month = $(".ui-datepicker-month").get(0).innerHTML;
  if (targetMonth === '') targetMonth = month;
  if (month !== targetMonth) {
    $(".ui-datepicker-next").click();
    return false;
  } else {
    console.log("picking a date in " + targetMonth);
    clearInterval(monthTimerID);
    monthTimerID = null;
    return true;
  }
}

function clickApply() {
  var waitingBox = $("#waiting_overlay").css("display") === "block";
  if (waitingBox) {
    console.log("waiting for overlay to disappear");
    return false;
  }
  console.log("clicking apply");
  $("#service_apply_button").click();
  setTimeout(function() {
    var datesAvailable = $(".ui-datepicker-calendar a").length;
    var success = (datesAvailable > 0);
    if (success) {
      console.log("dates available!");
    }
    return success;
  }, 1500);
}

function selectMonth() {
  console.log("selecting month");
  if ($(".ui-datepicker-month").length !== 1) {
    console.log("month not visible, try extending wait time");
    return;
  }
  var month = $(".ui-datepicker-month").get(0).innerHTML;

  if (month !== targetMonth) { // click through months until reached
    monthTimerID = setInterval(function() {
      console.log("seeking " + targetMonth);
      var success = nextMonth(targetMonth);
      if (success) {
        console.log("found " + targetMonth);
        apply();
      }
    }, delay);
  } else { // current month selected
    console.log("found " + targetMonth);
    clearInterval(monthTimerID);
    monthTimerID = null;
    apply();
  }
}

function apply() {
  var waitingBox = $("#waiting_overlay").css("display") === "block";
  if (waitingBox) {
    setTimeout(apply, delay); // wait until 'waiting' box disappears
    return;
  }

  if (monthTimerID !== null) { // wait until target month found
    console.log("waiting to find month");
    setTimeout(apply, delay);
    return;
  }
  // click 'apply' until a date can be selected
  var datesAvailable = $(".ui-datepicker-calendar a").length;
  if (datesAvailable < 1) {
    console.log("click apply until date is available");
    var success = clickApply();
    if (!success) {
      // re-enter
      setTimeout(apply, delay);
    } else {
      console.log("dates available!");
      setTimeout(selectDate, delay);
    }
  } else {
    console.log("dates available!");
    setTimeout(selectDate, delay);
  }
}

function start() {
  // start cascade
  setTimeout(showButton, delay);
  return "starting scheduleMe";
}

start();