// 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", function () {
    var items = document.querySelectorAll(".menu-item");
    function setActive(name) {
        items.forEach(function (i) {
            i.classList.toggle("active", i.dataset.page === name);
        });
    }
    function bindMenu() {
        items.forEach(function (item) {
            item.addEventListener("click", function () {
                var page = item.dataset.page;
                setActive(page);
                loadPage(page);
            });
        });
    }
    bindMenu();
    setActive("page1");
    loadPage("page1");
});

function logout() {
    disconnectLog(); // 断开日志流连接, 避免在注销后, 日志流可能仍然占用PID资源
    window.location.href = "/api/auth/logout";
}

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

// IMEI 重试间隔: 失败时从 3s 起翻倍, 上限 60s。
// 设备早期(IMEI 文件尚未生成)能快速补上, 若接口长期不可用也不会一直每 3 秒空转。
var imeiRetryDelay = 3000;

function fetchIMEI() {
    fetch("/api/device/imei")
        .then(function (res) {
            if (!res.ok) {
                throw new Error("http error");
            }
            return res.text();
        })
        .then(function (imei) {
            if (!imei || imei.trim() === "") {
                throw new Error("empty imei");
            }
            setIMEI(imei.trim());
            imeiRetryDelay = 3000; // 成功一次即复位, 后续偶发失败仍快速重试
        })
        .catch(function (e) {
            setTimeout(fetchIMEI, imeiRetryDelay);
            imeiRetryDelay = Math.min(imeiRetryDelay * 2, 60000);
        });
}
var sysTimeTimer = null;

function startSysTime() {
    if (sysTimeTimer !== null) {
        return;
    }
    function update() {
        var el = document.getElementById("sys-time");
        if (!el) {
            return;
        }
        var now = new Date();
        var year = now.getFullYear();
        var month = String(now.getMonth() + 1).padStart(2, "0");
        var day = String(now.getDate()).padStart(2, "0");
        var hour = String(now.getHours()).padStart(2, "0");
        var min = String(now.getMinutes()).padStart(2, "0");
        var sec = String(now.getSeconds()).padStart(2, "0");
        el.textContent = year + "-" + month + "-" + day + " " + hour + ":" + min + ":" + sec;
    }
    update();
    sysTimeTimer = setInterval(update, 1000);
}
document.addEventListener("DOMContentLoaded", function () {
    startSysTime();
});

function reboot() {
    if (!confirm("确定重启设备吗？")) return;
    fetch("/api/system/reboot", {
        method: "POST",
    })
        .then(function (r) {
            return r.json();
        })
        .then(function (d) {
            if (d.ok) {
                alert("设备正在重启...");
                setTimeout(logout, 1000);
            } else {
                alert("重启失败: " + d.error);
            }
        })
        .catch(function (e) {
            return alert("请求失败: " + e);
        });
}

function loadIMEI() {
    fetchIMEI();
}
loadIMEI();

window.onload = function () {
    var mask = document.getElementById("loading-mask");
    if (mask) {
        mask.style.display = "none";
    }
};