(function (global) {
  var root = document.querySelector("[data-toast]");
  if (!root) return;

  var panel = root.querySelector("[data-toast-panel]");
  var textEl = root.querySelector("[data-toast-text]");
  var iconSuccess = root.querySelector("[data-toast-icon-success]");
  var iconError = root.querySelector("[data-toast-icon-error]");
  var hideTimer = 0;
  var removeTimer = 0;
  var DEFAULT_MS = 2600;

  function normalizeType(type) {
    var t = String(type || "").toLowerCase();
    if (t === "success" || t === "ok") return "success";
    // 失败态：error / fail / warning 等非成功统一走失败样式
    return "error";
  }

  function clearTimers() {
    if (hideTimer) {
      window.clearTimeout(hideTimer);
      hideTimer = 0;
    }
    if (removeTimer) {
      window.clearTimeout(removeTimer);
      removeTimer = 0;
    }
  }

  function hide() {
    root.classList.remove("is-visible");
    removeTimer = window.setTimeout(function () {
      root.setAttribute("hidden", "");
      root.classList.remove("is-success", "is-error");
      if (textEl) textEl.textContent = "";
      if (iconSuccess) {
        iconSuccess.setAttribute("hidden", "");
        iconSuccess.style.display = "none";
      }
      if (iconError) {
        iconError.setAttribute("hidden", "");
        iconError.style.display = "none";
      }
    }, 220);
  }

  function showToast(message, type, duration) {
    var tip = String(message == null ? "" : message).trim();
    if (!tip || !panel || !textEl) return;

    var kind = normalizeType(type);
    clearTimers();

    root.classList.remove("is-success", "is-error", "is-visible");
    root.classList.add(kind === "success" ? "is-success" : "is-error");
    textEl.textContent = tip;

    if (iconSuccess) {
      if (kind === "success") {
        iconSuccess.removeAttribute("hidden");
        iconSuccess.style.display = "";
      } else {
        iconSuccess.setAttribute("hidden", "");
        iconSuccess.style.display = "none";
      }
    }
    if (iconError) {
      if (kind === "error") {
        iconError.removeAttribute("hidden");
        iconError.style.display = "";
      } else {
        iconError.setAttribute("hidden", "");
        iconError.style.display = "none";
      }
    }

    root.removeAttribute("hidden");
    // 下一帧再加 visible，保证过渡动画生效
    window.requestAnimationFrame(function () {
      root.classList.add("is-visible");
    });

    var ms = Number(duration);
    if (!ms || ms < 800) ms = DEFAULT_MS;
    hideTimer = window.setTimeout(hide, ms);
  }

  global.showToast = showToast;
})(window);