Versie 0.2.0

server/price-export.mjs

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+// Generated, do not edit. sha256:2f3082db0160d4179616e98a296a8ab4a5647a67cfd48f2cc38d5f27a7ead0fa
+import { priceSeriesExport } from './data/price-history.js';
+import { getBaseCurrency } from './data/portfolio.js';
+
+export const CSV_COLUMNS = ['instrument', 'source', 'quote', 'unit', 'resolution', 'observed_at_utc', 'fetched_at_utc', 'price'];
+
+const iso = (v) => {
+  if (!v) return '';
+  const ms = Date.parse(/[zZ]|[+-]\d\d:?\d\d$/.test(v) || v.length === 10 ? v : `${v}Z`);
+  return Number.isFinite(ms) ? new Date(ms).toISOString() : '';
+};
+const cel = (v) => {
+  const s = v == null ? '' : String(v);
+  return /[",\r\n]/.test(s) ? `"${s.replace(/"/g, '""')}"` : s;
+};
+
+export function priceHistoryCsv(rows, quote) {
+  const regels = [CSV_COLUMNS.join(',')];
+  for (const r of rows) {
+    const observed = iso(r.observedAt);
+    const price = Number(r.fiatPrice);
+    if (!observed || !Number.isFinite(price) || price <= 0) continue;
+    regels.push([
+      `${r.kind}:${String(r.symbol || '').toUpperCase()}`, r.source, quote, r.kind === 'metal' ? 'g' : '',
+      r.resolution, observed, iso(r.createdAt), price,
+    ].map(cel).join(','));
+  }
+  return regels.join('\n') + '\n';
+}
+
+function bestandsnaam() {
+  const d = new Date();
+  const p = n => String(n).padStart(2, '0');
+  return `koershistorie-${d.getFullYear()}${p(d.getMonth() + 1)}${p(d.getDate())}.csv`;
+}
+
+export function exportPriceHistory(res) {
+  const body = Buffer.from(priceHistoryCsv(priceSeriesExport(), getBaseCurrency()), 'utf-8');
+  res.writeHead(200, {
+    'Content-Type': 'text/csv; charset=utf-8',
+    'Content-Disposition': `attachment; filename="${bestandsnaam()}"`,
+    'Content-Length': body.length,
+    'Cache-Control': 'no-store',
+    'X-Content-Type-Options': 'nosniff',
+  });
+  res.end(body);
+}