Add XOXNO lending yield adapter

Author: mihaieremia

src/adaptors/xoxno-lending/index.js

@@ -0,0 +1,81 @@
+const API_BASE = process.env.XOXNO_LENDING_API_BASE || 'https://api.xoxno.com';
+const HEADERS = { 'User-Agent': 'dune-analytics' };
+const REQUEST_TIMEOUT_MS = 5_000;
+
+const CHAIN_CONFIGS = {
+  stellar: {
+    chain: 'Stellar',
+    exportPath: '/integrations/lending/stellar',
+  },
+
+  // Add MultiversX later with the same API response shape:
+  // multiversx: {
+  //   chain: 'MultiversX',
+  //   exportPath: '/integrations/lending/multiversx',
+  // },
+};
+
+function getApiUrl(path) {
+  return `${API_BASE.replace(/\/$/, '')}${path}`;
+}
+
+async function getMarkets(config) {
+  const response = await fetch(getApiUrl(config.exportPath), {
+    headers: HEADERS,
+    signal: AbortSignal.timeout(REQUEST_TIMEOUT_MS),
+  });
+
+  if (!response.ok) {
+    throw new Error(`XOXNO ${config.chain} lending export failed: ${response.status}`);
+  }
+
+  const data = await response.json();
+  return Array.isArray(data.markets) ? data.markets : [];
+}
+
+function keepFinite(pool) {
+  return [
+    pool.tvlUsd,
+    pool.apyBase,
+    pool.apyBaseBorrow,
+    pool.totalSupplyUsd,
+    pool.totalBorrowUsd,
+  ].every(Number.isFinite);
+}
+
+function decimalToPercent(value) {
+  return Number(value ?? 0) * 100;
+}
+
+async function apy() {
+  const pools = [];
+
+  for (const config of Object.values(CHAIN_CONFIGS)) {
+    const markets = await getMarkets(config);
+
+    for (const market of markets) {
+      pools.push({
+        pool: `xoxno-lending-${config.chain.toLowerCase()}-${market.token}`,
+        chain: config.chain,
+        project: 'xoxno-lending',
+        symbol: market.symbol,
+        tvlUsd: Number(market.tvlUsd ?? 0),
+        apyBase: decimalToPercent(market.supplyApy),
+        apyBaseBorrow: decimalToPercent(market.borrowApy),
+        totalSupplyUsd: Number(market.suppliedUsd ?? 0),
+        totalBorrowUsd: Number(market.borrowedUsd ?? 0),
+        underlyingTokens: [market.token],
+        url: 'https://xoxno.com/defi/lending',
+      });
+    }
+  }
+
+  return pools.filter(keepFinite);
+}
+
+module.exports = {
+  protocolId: '8049',
+  timetravel: false,
+  apy,
+  url: 'https://xoxno.com/defi/lending',
+};