add zest-v2 adapter

src/adaptors/zest-v2/index.js

@@ -0,0 +1,173 @@
+const axios = require('axios');
+const {
+  callReadOnlyFunction,
+  contractPrincipalCV,
+} = require('@stacks/transactions');
+const { StacksMainnet } = require('@stacks/network');
+
+const DEPLOYER = 'SP1A27KFY4XERQCCRCARCYD1CC5N7M6688BSYADJ7';
+
+const POOLS = [
+  {
+    symbol: 'STX',
+    vaultContract: 'v0-vault-stx',
+    assetAddress: 'SP1A27KFY4XERQCCRCARCYD1CC5N7M6688BSYADJ7',
+    contractName: 'wstx',
+    decimals: 6,
+    priceKeys: ['coingecko:blockstack'],
+  },
+  {
+    symbol: 'sBTC',
+    vaultContract: 'v0-vault-sbtc',
+    assetAddress: 'SM3VDXK3WZZSA84XXFKAFAF15NNZX32CTSG82JFQ4',
+    contractName: 'sbtc-token',
+    decimals: 8,
+    priceKeys: [
+      'stacks:SM3VDXK3WZZSA84XXFKAFAF15NNZX32CTSG82JFQ4.sbtc-token',
+      'coingecko:bitcoin',
+    ],
+  },
+  {
+    symbol: 'stSTX',
+    vaultContract: 'v0-vault-ststx',
+    assetAddress: 'SP4SZE494VC2YC5JYG7AYFQ44F5Q4PYV7DVMDPBG',
+    contractName: 'ststx-token',
+    decimals: 6,
+    priceKeys: [
+      'stacks:SP4SZE494VC2YC5JYG7AYFQ44F5Q4PYV7DVMDPBG.ststx-token',
+      'coingecko:blockstack',
+    ],
+  },
+  {
+    symbol: 'USDC',
+    vaultContract: 'v0-vault-usdc',
+    assetAddress: 'SP120SBRBQJ00MCWS7TM5R8WJNTTKD5K0HFRC2CNE',
+    contractName: 'usdcx',
+    decimals: 6,
+    priceKeys: [
+      'stacks:SP120SBRBQJ00MCWS7TM5R8WJNTTKD5K0HFRC2CNE.usdcx',
+      'coingecko:usd-coin',
+    ],
+  },
+  {
+    symbol: 'USDH',
+    vaultContract: 'v0-vault-usdh',
+    assetAddress: 'SPN5AKG35QZSK2M8GAMR4AFX45659RJHDW353HSG',
+    contractName: 'usdh-token-v1',
+    decimals: 8,
+    priceKeys: [
+      'stacks:SPN5AKG35QZSK2M8GAMR4AFX45659RJHDW353HSG.usdh-token-v1',
+      'coingecko:usd-coin',
+    ],
+  },
+  {
+    symbol: 'stSTXbtc',
+    vaultContract: 'v0-vault-ststxbtc',
+    assetAddress: 'SP4SZE494VC2YC5JYG7AYFQ44F5Q4PYV7DVMDPBG',
+    contractName: 'ststxbtc-token-v2',
+    decimals: 6,
+    priceKeys: [
+      'stacks:SP4SZE494VC2YC5JYG7AYFQ44F5Q4PYV7DVMDPBG.ststxbtc-token-v2',
+      'coingecko:blockstack',
+    ],
+  },
+];
+
+async function fetchPrices() {
+  const keys = [...new Set(POOLS.flatMap((p) => p.priceKeys))].join(',');
+  const url = `https://coins.llama.fi/prices/current/${keys}`;
+  const { data } = await axios.get(url);
+  return data.coins;
+}
+
+function getPrice(prices, priceKeys) {
+  for (const key of priceKeys) {
+    if (prices[key]?.price) return { price: prices[key].price, key };
+  }
+  return null;
+}
+
+async function fetchApys(pool, network) {
+  const result = await callReadOnlyFunction({
+    contractAddress: DEPLOYER,
+    contractName: 'v0-1-data',
+    functionName: 'get-asset-apys',
+    network,
+    functionArgs: [contractPrincipalCV(pool.assetAddress, pool.contractName)],
+    senderAddress: DEPLOYER,
+  });
+
+  const tupleData = result.value.data;
+  const supplyApy = Number(tupleData['supply-apy'].value) / 100;
+  const borrowApy = Number(tupleData['borrow-apy'].value) / 100;
+
+  return { supplyApy, borrowApy };
+}
+
+async function fetchTotalAssets(pool, network) {
+  const result = await callReadOnlyFunction({
+    contractAddress: DEPLOYER,
+    contractName: pool.vaultContract,
+    functionName: 'get-total-assets',
+    network,
+    functionArgs: [],
+    senderAddress: DEPLOYER,
+  });
+
+  const rawAmount = Number(result.value.value);
+  return rawAmount / Math.pow(10, pool.decimals);
+}
+
+async function getZestV2Pools() {
+  try {
+    const network = new StacksMainnet();
+    const chain = 'Stacks';
+
+    const prices = await fetchPrices();
+
+    const results = [];
+
+    for (const pool of POOLS) {
+      try {
+        const priceResult = getPrice(prices, pool.priceKeys);
+        if (!priceResult) {
+          console.log(`Skipping ${pool.symbol}: price not available`);
+          continue;
+        }
+
+        const [apys, totalAssets] = await Promise.all([
+          fetchApys(pool, network),
+          fetchTotalAssets(pool, network),
+        ]);
+
+        const tvlUsd = totalAssets * priceResult.price;
+
+        results.push({
+          pool: `${DEPLOYER}.${pool.vaultContract}-${chain}`.toLowerCase(),
+          chain: chain,
+          project: 'zest-v2',
+          symbol: pool.symbol,
+          tvlUsd: tvlUsd,
+          apyBase: apys.supplyApy,
+          apyBaseBorrow: apys.borrowApy,
+          underlyingTokens: [`${pool.assetAddress}.${pool.contractName}`],
+          token: `${pool.assetAddress}.${pool.contractName}`,
+          url: 'https://app.zestprotocol.com/market/main',
+        });
+      } catch (error) {
+        console.log(`Error processing pool ${pool.symbol}: ${error.message}`);
+      }
+    }
+
+    return results;
+  } catch (error) {
+    console.log(`Error in getZestV2Pools: ${error.message}`);
+    return [];
+  }
+}
+
+module.exports = {
+  timetravel: false,
+  apy: getZestV2Pools,
+  url: 'https://app.zestprotocol.com/market/main',
+};