// Nicer display of time distance from a given event
function updateTimeAgo() {
  var selection = document.querySelectorAll('time');

  if (selection.length != 0) {
    timeago.render(selection);
    timeago.cancel()
  }

  var selection = document.getElementsByClassName('time-title')
  var title = null

  for (var i = 0; i < selection.length; i++) {
    let element = selection[i]

    title = element.getAttribute('title')
    element.setAttribute('title', timeago.format(title))
  }
}

// To prevent from flickering, the UI is initially hidden and visible when all the JS components
// are fully initialized
function displayUi() {
  var content = document.getElementById('content');
  content.style.display = 'inherit';
}

// When using explorer, we can select the desired partition. This code redirects without having
// to press a button after a select
function redirectToPartition() {
  var selector = document.getElementById('current-partition');

  if (selector == null) { return }

  selector.addEventListener('change', function(){
    location.href = this.value;
  });
}

// Binds to links and forms to make sure action is what user wants
function bindActionsConfirmations() {
  var elements = document.getElementsByClassName('confirm-action')
  var confirmation = 'Are you sure?'

  for (var i = 0; i < elements.length; i++) {
    let element = elements[i]
    let action = 'click'

    if (element.nodeName === 'FORM') {
      action = 'submit'
    }

    element.addEventListener(action, function(event) {
      if (!window.confirm(confirmation)) {
        event.preventDefault();
      }
    })
  }
}

function addListeners() {
  bindPollingButtonClick();
  setLivePollButton();
  setPollingListener();

  hljs.highlightAll();
  updateTimeAgo();
  redirectToPartition();
  manageTabs();
  manageCharts();
  bindActionsConfirmations();
  loadOffsetLookupDatePicker();
  displayUi();
}

var ready = (callback) => {
  if (document.readyState != 'loading') callback();
  else document.addEventListener('DOMContentLoaded', callback);
}

ready(addListeners)