feat: add the vault liquid staking adapter (#2396)

* feat: add the vault liquid staking adapter

* add total supply guard

Author: 0xkr3p

src/adaptors/the-vault-liquid-staking/index.js

@@ -0,0 +1,47 @@
+const axios = require('axios');
+const { getTotalSupply } = require('../utils');
+
+const VSOL_MINT = 'vSoLxydx6akxyMD9XEcPvGYNGq6Nn66oqVb3UkGkei7';
+const priceKey = `solana:${VSOL_MINT}`;
+const SOL = 'So11111111111111111111111111111111111111112';
+
+const apy = async () => {
+  const [totalSupply, priceRes, apyRes] = await Promise.all([
+    getTotalSupply(VSOL_MINT),
+    axios.get(`https://coins.llama.fi/prices/current/${priceKey}`),
+    axios.get(
+      `https://extra-api.sanctum.so/v1/apy/latest?lst=${VSOL_MINT}`
+    ),
+  ]);
+
+  if (!Number.isFinite(totalSupply))
+    throw new Error(`Unable to fetch total supply for ${VSOL_MINT}`);
+
+  const currentPrice = priceRes.data.coins[priceKey]?.price;
+  if (!currentPrice) throw new Error('Unable to fetch vSOL price');
+
+  const apyRaw = apyRes?.data?.apys?.[VSOL_MINT];
+  if (!Number.isFinite(apyRaw))
+    throw new Error(`Unable to fetch APY for ${VSOL_MINT}`);
+  const apyBase = apyRaw * 100;
+
+  return [
+    {
+      pool: VSOL_MINT,
+      chain: 'Solana',
+      project: 'the-vault-liquid-staking',
+      symbol: 'vSOL',
+      tvlUsd: totalSupply * currentPrice,
+      apyBase,
+      underlyingTokens: [SOL],
+      token: VSOL_MINT,
+      poolMeta: '5% rewards fee',
+    },
+  ];
+};
+
+module.exports = {
+  timetravel: false,
+  apy,
+  url: 'https://thevault.finance/stake',
+};