(function () {
  "use strict";

  const qs = (selector, root = document) => root.querySelector(selector);
  const qsa = (selector, root = document) => [...root.querySelectorAll(selector)];
  const toastRegion = qs("[data-toast-region]");
  const announce = (message) => {
    if (!toastRegion) return;
    const item = document.createElement("div");
    item.className = "toast";
    item.setAttribute("role", "status");
    item.textContent = message;
    toastRegion.appendChild(item);
    window.setTimeout(() => item.remove(), 3600);
  };

  qsa(".choice-card input").forEach((input) => {
    input.addEventListener("change", () => {
      qsa(`input[name="${input.name}"]`).forEach((peer) => peer.closest(".choice-card")?.classList.toggle("selected", peer.checked));
      if (input.name === "discover-method") {
        const manual = input.value === "manual";
        qs("[data-auto-choice]").hidden = manual;
        qs("[data-manual-choice]").hidden = !manual;
      }
    });
  });

  const wizard = qs("#add-camera");
  if (wizard) {
    let step = 0;
    let connectionPassed = false;
    const panels = qsa("[data-wizard-panel]", wizard);
    const progress = qsa(".wizard-progress li", wizard);
    const back = qs("[data-wizard-back]", wizard);
    const next = qs("[data-wizard-next]", wizard);
    const stepLabel = qs("[data-wizard-step-label]", wizard);
    const connectionStatus = qs("[data-connection-status]", wizard);

    const render = () => {
      panels.forEach((panel, index) => {
        panel.hidden = index !== step;
        panel.classList.toggle("active", index === step);
      });
      progress.forEach((item, index) => item.classList.toggle("active", index <= step));
      stepLabel.textContent = `第 ${step + 1} 步，共 ${panels.length} 步`;
      back.disabled = step === 0;
      next.textContent = step === panels.length - 1 ? "完成" : "下一步";
      next.disabled = step === 3 && !connectionPassed;
      qs("input, button, h3[tabindex]", panels[step])?.focus({ preventScroll: true });
    };

    qsa("[data-open-modal='add-camera']").forEach((trigger) => trigger.addEventListener("click", () => {
      step = trigger.textContent.includes("继续") ? 2 : 0;
      connectionPassed = false;
      connectionStatus.className = "test-status";
      connectionStatus.innerHTML = "<strong>尚未测试</strong><span>点击“测试连接”继续。</span>";
      render();
    }));
    back.addEventListener("click", () => { if (step > 0) { step -= 1; render(); } });
    next.addEventListener("click", () => {
      if (step < panels.length - 1) { step += 1; render(); return; }
      qs("[data-close-modal]", wizard)?.click();
      announce("教学楼西门 01 已添加，可立即查看实时画面");
    });
    qs("[data-test-connection]", wizard)?.addEventListener("click", (event) => {
      const button = event.currentTarget;
      button.disabled = true;
      button.textContent = "正在测试…";
      connectionStatus.className = "test-status testing";
      connectionStatus.innerHTML = "<strong>正在检查账号和画面</strong><span>通常几秒内完成。</span>";
      window.setTimeout(() => {
        connectionPassed = true;
        connectionStatus.className = "test-status success";
        connectionStatus.innerHTML = "<strong>连接成功</strong><span>画面正常，已自动选择高清（推荐）。</span>";
        button.disabled = false;
        button.textContent = "重新测试";
        render();
      }, 520);
    });
    qs("[data-simulate-failure]", wizard)?.addEventListener("click", () => {
      connectionPassed = false;
      connectionStatus.className = "test-status error";
      connectionStatus.innerHTML = "<strong>账号验证失败</strong><span>请返回上一步检查用户名和密码，然后重新测试。</span>";
      next.disabled = true;
      announce("连接失败：请检查账号密码后重试");
    });
  }

  const recovery = qs("#recover-camera");
  if (recovery) {
    const password = qs("#recover-password", recovery);
    const error = qs("[data-recovery-error]", recovery);
    const status = qs("[data-recovery-status]", recovery);
    const save = qs("[data-recovery-save]", recovery);
    qs("[data-recovery-test]", recovery)?.addEventListener("click", (event) => {
      const testButton = event.currentTarget;
      if (!password.value.trim()) {
        error.hidden = false;
        password.setAttribute("aria-invalid", "true");
        password.focus();
        return;
      }
      error.hidden = true;
      password.removeAttribute("aria-invalid");
      testButton.disabled = true;
      testButton.textContent = "正在测试…";
      status.className = "test-status testing";
      status.innerHTML = "<strong>正在重新连接</strong><span>正在检查账号和实时画面。</span>";
      window.setTimeout(() => {
        status.className = "test-status success";
        status.innerHTML = "<strong>连接成功</strong><span>实时画面已恢复，可以安全保存。</span>";
        testButton.disabled = false;
        testButton.textContent = "重新测试";
        save.disabled = false;
      }, 520);
    });
    save.addEventListener("click", () => {
      qs("[data-close-modal]", recovery)?.click();
      announce("宿舍东门 02 的账号已更新，实时画面恢复正常");
    });
  }
})();