"use strict";

(function (global) {
  const queue = [];
  let active = null;

  function ensureDialog() {
    let dialog = document.getElementById("gameConfirmDialog");
    if (dialog) return dialog;
    dialog = document.createElement("div");
    dialog.id = "gameConfirmDialog";
    dialog.className = "field-dialog game-confirm-dialog hidden";
    dialog.setAttribute("role", "alertdialog");
    dialog.setAttribute("aria-modal", "true");
    dialog.setAttribute("aria-labelledby", "gameConfirmDialogTitle");
    dialog.setAttribute("aria-describedby", "gameConfirmDialogMessage");
    dialog.innerHTML = `
      <div class="field-dialog-panel game-confirm-panel">
        <h2 id="gameConfirmDialogTitle"></h2>
        <p id="gameConfirmDialogMessage" class="field-dialog-lead game-confirm-message"></p>
        <div class="field-dialog-actions game-confirm-actions">
          <button class="btn" data-game-dialog-cancel type="button"></button>
          <button class="btn primary" data-game-dialog-confirm type="button"></button>
        </div>
      </div>`;
    document.body.appendChild(dialog);
    dialog.addEventListener("click", event => {
      if (!active) return;
      if (event.target === dialog || event.target.closest("[data-game-dialog-cancel]")) settle(false);
      else if (event.target.closest("[data-game-dialog-confirm]")) settle(true);
    });
    document.addEventListener("keydown", event => {
      if (!active || dialog.classList.contains("hidden")) return;
      if (event.key === "Escape") { event.preventDefault(); event.stopImmediatePropagation?.(); settle(false); }
    }, true);
    return dialog;
  }

  function pump() {
    if (active || !queue.length) return;
    active = queue.shift();
    const dialog = ensureDialog();
    const title = dialog.querySelector("#gameConfirmDialogTitle");
    const message = dialog.querySelector("#gameConfirmDialogMessage");
    const confirmButton = dialog.querySelector("[data-game-dialog-confirm]");
    const cancelButton = dialog.querySelector("[data-game-dialog-cancel]");
    if (title) title.textContent = active.options.title || "\u78ba\u8a8d";
    if (message) message.textContent = active.options.message || "";
    if (confirmButton) {
      confirmButton.textContent = active.options.confirmText || "\u5b9f\u884c";
      confirmButton.classList.toggle("danger", Boolean(active.options.danger));
      confirmButton.classList.toggle("primary", !active.options.danger);
    }
    if (cancelButton) cancelButton.textContent = active.options.cancelText || "\u30ad\u30e3\u30f3\u30bb\u30eb";
    dialog.classList.remove("hidden");
    global.setTimeout(() => confirmButton?.focus?.(), 0);
  }

  function settle(accepted) {
    if (!active) return;
    const current = active;
    active = null;
    document.getElementById("gameConfirmDialog")?.classList.add("hidden");
    current.restoreFocus?.focus?.();
    current.resolve(Boolean(accepted));
    global.setTimeout(pump, 0);
  }

  function confirm(options = {}) {
    return new Promise(resolve => {
      queue.push({ options: { ...options }, resolve, restoreFocus: document.activeElement || null });
      pump();
    });
  }

  global.TarinaiGameDialogs = Object.freeze({ confirm });
})(typeof window !== "undefined" ? window : globalThis);