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"use strict";

/**
 * Sinatra hover slider
 *
 * @since 1.0.0
 */
var sinatraHoverSlider = function sinatraHoverSlider(el) {
  var current = 0,
    spinner = el.querySelector('.si-spinner');

  // Hide spinner
  var hideSpinner = function hideSpinner() {
    spinner.classList.remove('visible');
    setTimeout(function () {
      spinner.style.display = 'none';
    }, 300);
    el.querySelector('.hover-slider-backgrounds').classList.add('loaded');
  };
  el.querySelector('.hover-slide-bg').classList.add('active');

  // Set background images from data-background
  el.querySelectorAll('.hover-slider-backgrounds .hover-slide-bg').forEach(function (item, i) {
    item.style.backgroundImage = 'url(' + item.getAttribute('data-background') + ')';
    el.querySelector('.hover-slider-items > div:nth-child(' + (i + 1) + ')').style.setProperty('--bg-image', 'url("' + item.getAttribute('data-background') + '")');
    item.removeAttribute('data-background');
  });

  // Wait for images to load
  imagesLoaded(el.querySelectorAll('.hover-slider-backgrounds'), {
    background: '.hover-slide-bg'
  }, function () {
    var preloader = document.getElementById('si-preloader');

    // Wait for preloader to finish before we show fade in animation
    if (null !== preloader && !document.body.classList.contains('si-loaded')) {
      document.body.addEventListener('si-preloader-done', function () {
        setTimeout(function () {
          hideSpinner();
        }, 300);
      });
    } else {
      setTimeout(function () {
        hideSpinner();
      }, 300);
    }
  });

  // Change backgrounds on hover
  el.querySelectorAll('.hover-slider-item-wrapper').forEach(function (item) {
    item.addEventListener('mouseenter', function () {
      if (current !== sinatraGetIndex(item)) {
        current = sinatraGetIndex(item);
        el.querySelectorAll('.hover-slide-bg').forEach(function (item, i) {
          item.classList.remove('active');
          if (i === current) {
            item.classList.add('active');
          }
        });
      }
    });
  });
  return el;
};

// Main
(function () {
  // On ready event
  document.addEventListener('DOMContentLoaded', function () {
    // Init sliders
    document.querySelectorAll('.si-hover-slider').forEach(function (item) {
      sinatraHoverSlider(item);
    });
  });
})();