Versie 0.2.0

client/price/btc-explorer.js

@@ -0,0 +1,74 @@
+// Generated, do not edit. sha256:e9ea9293b00980ab0270b38c345d130a439421cd662f57bea63c105e66a1587f
+import { CONFIG } from '../../shared/config.js';
+import { activeConnection } from '../data/connections.js';
+import { t } from '../i18n/index.js';
+
+export async function explorerBase() {
+  return (await activeConnection('btc_explorer')).url;
+}
+
+const HTTP_TIMEOUT_MS = 12000;
+const HTTP_RETRIES = 1;
+const HTTP_BACKOFF_MS = 800;
+export async function fetchJson(url, label, options = {}) {
+  let laatste;
+  for (let poging = 0; poging <= HTTP_RETRIES; poging++) {
+    if (poging) await new Promise(r => setTimeout(r, HTTP_BACKOFF_MS * poging));
+    const ctrl = new AbortController();
+    const timer = setTimeout(() => ctrl.abort(), HTTP_TIMEOUT_MS);
+    try {
+      const res = await fetch(url, { ...options, signal: ctrl.signal });
+      if (res.ok) return await res.json();
+      laatste = new Error(t('integrations.price.callFailed', { label, status: res.status }));
+      if (res.status < 500 && res.status !== 429) throw laatste;
+    } catch (e) {
+      if (e === laatste) throw e;
+      laatste = e.name === 'AbortError'
+        ? new Error(t('integrations.price.callTimeout', { label, s: HTTP_TIMEOUT_MS / 1000 }))
+        : e;
+    } finally {
+      clearTimeout(timer);
+    }
+  }
+  throw laatste;
+}
+
+export async function addressInfo(addr) {
+  const base = await explorerBase();
+  const d = await fetchJson(`${base}/api/address/${addr}`, t('integrations.price.labelAddress', { adres: addr }));
+  const balance_sats = d.chain_stats.funded_txo_sum - d.chain_stats.spent_txo_sum;
+  const tx_count = d.chain_stats.tx_count + d.mempool_stats.tx_count;
+  return { balance_sats, tx_count };
+}
+
+const PAGE = 25;
+const MAX_PAGES = 200;
+const lastConfirmedTxid = batch => {
+  for (let i = batch.length - 1; i >= 0; i--) {
+    if (batch[i].status && batch[i].status.confirmed) return batch[i].txid;
+  }
+  return null;
+};
+export async function addressTxs(addr) {
+  const base = await explorerBase();
+  const all = await fetchJson(`${base}/api/address/${addr}/txs`, t('integrations.price.labelAddressTxs', { adres: addr }));
+
+  let cursor = lastConfirmedTxid(all);
+  let pages = 0;
+  while (cursor && pages < MAX_PAGES) {
+    await new Promise(r => setTimeout(r, 150));
+    let batch;
+    try {
+      batch = await fetchJson(`${base}/api/address/${addr}/txs/chain/${cursor}`, t('integrations.price.labelAddressTxsPage'));
+    } catch (e) {
+      console.warn(`[addressTxs] pagination stopped for ${addr}: ${e.message}`);
+      break;
+    }
+    if (!batch.length) break;
+    all.push(...batch);
+    if (batch.length < PAGE) break;
+    cursor = batch[batch.length - 1].txid;
+    pages++;
+  }
+  return all;
+}