// DOM 加载完成后执行，启动入口：初始化菜单、默认页面加载
document.addEventListener("DOMContentLoaded", () => {
  const items = document.querySelectorAll(".menu-item");

  function setActive(name) {
    items.forEach(i => {
      i.classList.toggle("active", i.dataset.page === name);
    });
  }

  function bindMenu() {
    items.forEach(item => {
      item.addEventListener("click", () => {
        const page = item.dataset.page;
        setActive(page);
        loadPage(page);
      });
    });
  }

  bindMenu();
  setActive("page1");
  loadPage("page1");
});

function logout() {
  window.location.href = "/api/auth/logout";
}

function setIMEI(imei) {
  const el = document.getElementById("imei-value");
  if (el) {
    el.textContent = imei;
  }
}

async function fetchIMEI() {
  try {
    const res = await fetch("/api/device/imei");

    if (!res.ok) {
      throw new Error("http error");
    }

    const imei = await res.text();

    if (!imei || imei.trim() === "") {
      throw new Error("empty imei");
    }

    setIMEI(imei.trim());
    return;
  } catch (e) {
    console.log("get imei failed, retrying...");
    setTimeout(fetchIMEI, 3000); // 3秒后继续重试
  }
}

function setText(id, value)
{
  const el = document.getElementById(id);
  if (el) {
    el.textContent = value ?? "--";
  }
}

let sysTimeTimer = null;
function startSysTime() {
  if (sysTimeTimer !== null) {
    return;
  }

  function update() {
    const el = document.getElementById("sys-time");
    if (!el) {
      return;
    }

    const now = new Date();

    const year = now.getFullYear();
    const month = String(now.getMonth() + 1).padStart(2, "0");
    const day = String(now.getDate()).padStart(2, "0");

    const hour = String(now.getHours()).padStart(2, "0");
    const min = String(now.getMinutes()).padStart(2, "0");
    const sec = String(now.getSeconds()).padStart(2, "0");

    el.textContent =
      `${year}-${month}-${day} ${hour}:${min}:${sec}`;
  }

  update();

  sysTimeTimer = setInterval(update, 1000);
}

document.addEventListener("DOMContentLoaded", () => {
  startSysTime();
});

function reboot() {
  if (!confirm("确定重启设备吗？")) return;

  fetch("/api/system/reboot", {
    method: "POST"
  })
  .then(r => r.json())
  .then(d => {
    if (d.ok) {
      alert("设备正在重启...");
      setTimeout(logout, 1000);
    } else {
      alert("重启失败: " + d.error);
    }
  })
  .catch(e => alert("请求失败: " + e));
}

function loadIMEI() {
  fetchIMEI();
}

loadIMEI();