28 lines
735 B
JavaScript
28 lines
735 B
JavaScript
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// modules/data/bitcoin.js — Blockstream block height polling
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// Writes to S: lastKnownBlockHeight, _starPulseIntensity
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import { S } from '../state.js';
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const BITCOIN_REFRESH_MS = 60 * 1000;
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export async function fetchBlockHeight() {
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try {
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const res = await fetch('https://blockstream.info/api/blocks/tip/height');
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if (!res.ok) return null;
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const height = parseInt(await res.text(), 10);
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if (isNaN(height)) return null;
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const isNew = S.lastKnownBlockHeight !== null && height > S.lastKnownBlockHeight;
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S.lastKnownBlockHeight = height;
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if (isNew) {
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S._starPulseIntensity = 1.0;
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}
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return { height, isNewBlock: isNew };
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} catch {
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return null;
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}
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}
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export { BITCOIN_REFRESH_MS };
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