(function () {
  function initAutoCarousel() {
    var track = document.querySelector("[data-carousel-track]");
    if (!track) return;
    if (track.dataset.carouselInit === "1") return;
    track.dataset.carouselInit = "1";

    var cards = Array.prototype.slice.call(track.children);
    if (!cards.length) return;

    cards.forEach(function (card) {
      track.appendChild(card.cloneNode(true));
    });

    var paused = false;
    var userPaused = false;
    var speed = 0.45;
    var resetAt = track.scrollWidth / 2;

    function tick() {
      if (!paused) {
        track.scrollLeft += speed;
        if (track.scrollLeft >= resetAt) {
          track.scrollLeft = 0;
        }
      }
      window.requestAnimationFrame(tick);
    }

    track.addEventListener("mouseenter", function () {
      paused = true;
    });
    track.addEventListener("mouseleave", function () {
      paused = userPaused;
    });
    track.addEventListener("focusin", function () {
      paused = true;
    });
    track.addEventListener("focusout", function () {
      paused = userPaused;
    });
    window.addEventListener("blur", function () {
      paused = true;
    });
    window.addEventListener("focus", function () {
      paused = userPaused;
    });

    var toggle = document.getElementById("updates-carousel-toggle");
    if (toggle) {
      toggle.addEventListener("click", function () {
        userPaused = !userPaused;
        paused = userPaused;
        toggle.textContent = userPaused ? "Play" : "Pause";
        toggle.setAttribute("aria-pressed", userPaused ? "true" : "false");
      });
    }

    window.requestAnimationFrame(tick);
  }

  if (document.readyState === "loading") {
    document.addEventListener("DOMContentLoaded", initAutoCarousel);
  } else {
    initAutoCarousel();
  }
})();