(function () {
  "use strict";

  var carousel = document.querySelector("[data-home-carousel]");
  if (!carousel) return;

  var slides = Array.prototype.slice.call(carousel.querySelectorAll("[data-carousel-slide]"));
  var dots = Array.prototype.slice.call(carousel.querySelectorAll("[data-carousel-dot]"));
  var previous = carousel.querySelector("[data-carousel-previous]");
  var next = carousel.querySelector("[data-carousel-next]");
  var reduceMotion = window.matchMedia("(prefers-reduced-motion: reduce)").matches;
  var current = 0;
  var timer = null;

  function show(index) {
    current = (index + slides.length) % slides.length;

    slides.forEach(function (slide, slideIndex) {
      var active = slideIndex === current;
      var link = slide.querySelector("a");
      slide.classList.toggle("is-active", active);
      slide.setAttribute("aria-hidden", active ? "false" : "true");
      if (link) link.setAttribute("tabindex", active ? "0" : "-1");
    });

    dots.forEach(function (dot, dotIndex) {
      var active = dotIndex === current;
      dot.classList.toggle("is-active", active);
      dot.setAttribute("aria-current", active ? "true" : "false");
    });
  }

  function stop() {
    if (timer) window.clearInterval(timer);
    timer = null;
  }

  function start() {
    stop();
    if (!reduceMotion && slides.length > 1 && !document.hidden) {
      timer = window.setInterval(function () {
        show(current + 1);
      }, 8000);
    }
  }

  previous.addEventListener("click", function () {
    show(current - 1);
    start();
  });

  next.addEventListener("click", function () {
    show(current + 1);
    start();
  });

  dots.forEach(function (dot, dotIndex) {
    dot.addEventListener("click", function () {
      show(dotIndex);
      start();
    });
  });

  carousel.addEventListener("mouseenter", stop);
  carousel.addEventListener("mouseleave", start);
  carousel.addEventListener("focusin", stop);
  carousel.addEventListener("focusout", start);
  document.addEventListener("visibilitychange", start);

  show(0);
  start();
})();