/**

* Clock Updater - Updates the Solid clock every second using Nostr auth

* Usage: node clock-updater.mjs

*/

import { getPublicKey, finalizeEvent } from 'nostr-tools';

import { getToken } from 'nostr-tools/nip98';

// Nostr keypair (in production, load from env/file)

const SK_HEX = '3f188544fb81bd324ead7be9697fd9503d18345e233a7b0182915b0b582ddd70';

const sk = Uint8Array.from(Buffer.from(SK_HEX, 'hex'));

const pk = getPublicKey(sk);

const CLOCK_URL = 'https://solid.social/melvin/public/clock.json';

async function updateClock() {

const now = Math.floor(Date.now() / 1000);

const isoDate = new Date(now * 1000).toISOString();

const clockData = {

'@context': { 'schema': 'http://schema.org/' },

'@id': '#clock',

'@type': 'schema:Clock',

'schema:dateModified': isoDate,

'schema:value': now

};

try {

const token = await getToken(CLOCK_URL, 'PUT', (e) => finalizeEvent(e, sk));

const res = await fetch(CLOCK_URL, {

method: 'PUT',

headers: {

'Content-Type': 'application/ld+json',

'Authorization': 'Nostr ' + token

},

body: JSON.stringify(clockData)

});

const time = isoDate.split('T')[1].replace('Z', '');

if (res.ok) {

process.stdout.write(`\r${time} - Updated`);

} else {

console.log(`\n${time} - Error: ${res.status} ${res.statusText}`);

}

} catch (err) {

console.log(`\nError: ${err.message}`);

}

}

console.log('Clock Updater started');

console.log('did:nostr:', 'did:nostr:' + pk);

console.log('Target:', CLOCK_URL);

console.log('Press Ctrl+C to stop\n');

// Run immediately, then every second

updateClock();

setInterval(updateClock, 1000);