syncthing-relays-landing/relays.js

const mine = {
    'colorful-shadow': '194.32.107.224',
    'hidden-ocean': '89.105.197.88',
    'moonlit-surf': '91.190.155.20',
    'gorgeous-sunset': '188.93.140.100',
};

function humanByteSize(input) {
    if (input <= 0) {
        return '0 B';
    }

    const i = Math.floor(Math.log(input) / Math.log(1000));
    return (input / Math.pow(1000, i)).toFixed(2) * 1 + ' ' + ['B', 'kB', 'MB', 'GB', 'TB'][i];
}

// Convert seconds to human friendly time, with days
function humanTime(input) {
    const days = Math.floor(input / 86400);
    const hours = Math.floor(input % 86400 / 3600);
    const minutes = Math.floor(input % 3600 / 60);

    return `${days}d ${hours}h ${minutes}m`;
}

async function getRelayData() {
    const response = await fetch('https://relays.syncthing.net/endpoint/full');

    if (!response.ok) {
        return;
    }

    const data = await response.json();
    const relays = data.relays;

    for (const mineName in mine) {
        const ip = mine[mineName];
        const relay = relays.find(current => current.url.includes(ip));
        
        if (!relay) {
            console.log(mineName, 'not found');
            continue;
        }

        const { stats } = relay;
        const element = document.querySelector(`#${mineName} .stats`);
        if (!element) {
            continue;
        }

        const text = `${humanTime(stats.uptimeSeconds)} / ${humanByteSize(stats.bytesProxied)}`;
        element.textContent = text;
    }
}

window.addEventListener('DOMContentLoaded', getRelayData);