(function () {
  var mask = document.getElementById("vipDialog");
  if (!mask) return;

  function openDialog(event) {
    if (event) event.preventDefault();
    mask.classList.add("is-open");
    document.body.style.overflow = "hidden";
  }

  function closeDialog() {
    mask.classList.remove("is-open");
    document.body.style.overflow = "";
  }

  function isVipLockedEpisode(target) {
    var episode = target.closest(
      ".detail-episode, .play-ep, .play-ep-sheet-item, .detail-h5-ep-item"
    );
    if (!episode) return false;
    // 金币解锁走 coinDialog，不在此打开 VIP 弹窗
    if (episode.hasAttribute("data-coin-dialog-open")) return false;
    return !!episode.querySelector(
      ".detail-episode-lock[src*='vip'], .detail-episode-vip, .play-ep-lock[src*='vip'], .play-ep-sheet-lock[src*='vip'], .detail-h5-ep-lock[src*='vip']"
    );
  }

  document.addEventListener("click", function (event) {
    if (event.target.closest("[data-vip-dialog-open]") || isVipLockedEpisode(event.target)) {
      openDialog(event);
      return;
    }

    if (event.target.closest("[data-vip-dialog-close]")) {
      closeDialog();
      return;
    }

    if (event.target === mask) {
      closeDialog();
    }
  });

  document.addEventListener("keydown", function (event) {
    if (event.key === "Escape" && mask.classList.contains("is-open")) {
      closeDialog();
    }
  });

  window.openVipDialog = openDialog;
  window.closeVipDialog = closeDialog;
})();