sub_info_panel.js

/*
Surge配置参考注释,感谢@congcong.

示例↓↓↓ 
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[Script]
Sub_info = type=generic,timeout=10,script-path=https://raw.githubusercontent.com/mieqq/mieqq/master/sub_info_panel.js,script-update-interval=0,argument=url=[URL encode 后的机场节点链接]&reset_day=1&title=AmyInfo&icon=bonjour&color=#007aff

[Panel]
Sub_info = script-name=Sub_info,update-interval=600

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先将带有流量信息的节点订阅链接encode，用encode后的链接替换"url="后面的[机场节点链接]

（实在不会可以用这个捷径生成panel和脚本，https://www.icloud.com/shortcuts/3f24df391d594a73abd04ebdccd92584）

可选参数 &reset_day，后面的数字替换成流量每月重置的日期，如1号就写1，8号就写8。如"&reset_day=8",不加该参数不显示流量重置信息。

可选参数 &expire，机场链接不带expire信息的，可以手动传入expire参数，如"&expire=2022-02-01",注意一定要按照yyyy-MM-dd的格式。不希望显示到期信息也可以添加&expire=false取消显示。

可选参数"title=xxx" 可以自定义标题。

可选参数"icon=xxx" 可以自定义图标，内容为任意有效的 SF Symbol Name，如 bolt.horizontal.circle.fill，详细可以下载app https://apps.apple.com/cn/app/sf-symbols-browser/id1491161336

可选参数"color=xxx" 当使用 icon 字段时，可传入 color 字段控制图标颜色，字段内容为颜色的 HEX 编码。如：color=#007aff
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有些服务端不支持head访问，可以添加参数&method=get
*/

let args = getArgs();

(async () => {
    let info = await getDataInfo(args.url);
    if (!info) $done();

    let used = info.download + info.upload;
    let total = info.total;
    let expire = args.expire || info.expire;


    let content = [`用量：${bytesToSize(used)} | ${bytesToSize(total)}`];


    if (expire && expire !== "false") {
        if (/^[\d.]+$/.test(expire)) expire *= 1000;
        let resetDayLeft = getRmainingDays(parseInt(args["reset_day"]) || new Date(expire).getDate());
        if (resetDayLeft) {
            content.push(`重置：剩余${resetDayLeft}天`);
        }
        content.push(`到期：${formatTime(expire)}`);
    }

    let now = new Date();
    let hour = now.getHours();
    let minutes = now.getMinutes();
    hour = hour > 9 ? hour : "0" + hour;
    minutes = minutes > 9 ? minutes : "0" + minutes;

    $done({
        title: `${args.title} | ${hour}:${minutes}`,
        content: content.join("\n"),
        icon: args.icon || "airplane.circle",
        "icon-color": args.color || "#007aff",
    });
})();

function getArgs() {
    return Object.fromEntries(
        $argument
            .split("&")
            .map((item) => item.split("="))
            .map(([k, v]) => [k, decodeURIComponent(v)])
    );
}

function getUserInfo(url) {
    let method = args.method || "head";
    let request = { headers: { "User-Agent": "Quantumult%20X" }, url };
    return new Promise((resolve, reject) =>
        $httpClient[method](request, (err, resp) => {
            if (err != null) {
                reject(err);
                return;
            }
            if (resp.status !== 200) {
                reject(resp.status);
                return;
            }
            let header = Object.keys(resp.headers).find(
                (key) => key.toLowerCase() === "subscription-userinfo"
            );
            if (header) {
                resolve(resp.headers[header]);
                return;
            }
            reject("链接响应头不带有流量信息");
        })
    );
}

async function getDataInfo(url) {
    const [err, data] = await getUserInfo(url)
        .then((data) => [null, data])
        .catch((err) => [err, null]);
    if (err) {
        console.log(err);
        return;
    }

    return Object.fromEntries(
        data
            .match(/\w+=[\d.eE+-]+/g)
            .map((item) => item.split("="))
            .map(([k, v]) => [k, Number(v)])
    );
}

function getRmainingDays(resetDay) {
    if (!resetDay) return;

    let now = new Date();
    let today = now.getDate();
    let month = now.getMonth();
    let year = now.getFullYear();
    let daysInMonth;

    if (resetDay > today) {
        daysInMonth = 0;
    } else {
        daysInMonth = new Date(year, month + 1, 0).getDate();
    }

    return daysInMonth - today + resetDay;
}

function bytesToSize(bytes) {
    if (bytes === 0) return "0B";
    let k = 1024;
    sizes = ["B", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"];
    let i = Math.floor(Math.log(bytes) / Math.log(k));
    return (bytes / Math.pow(k, i)).toFixed(2) + " " + sizes[i];
}

function formatTime(time) {
    let dateObj = new Date(time);
    let year = dateObj.getFullYear();
    let month = dateObj.getMonth() + 1;
    let day = dateObj.getDate();
    return year + "年" + month + "月" + day + "日";
}