feat: add 3jane-lending

src/adaptors/3jane-lending/index.js

@@ -0,0 +1,150 @@
+const sdk = require('@defillama/sdk');
+const axios = require('axios');
+const utils = require('../utils');
+
+const CHAIN = 'ethereum';
+const PROJECT = '3jane-lending';
+const USDC = '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48';
+
+const USD3 = '0x056B269Eb1f75477a8666ae8C7fE01b64dD55eCc';
+const sUSD3 = '0xf689555121e529Ff0463e191F9Bd9d1E496164a7';
+const waUSDC = '0xD4fa2D31b7968E448877f69A96DE69f5de8cD23E';
+const MORPHO_CREDIT = '0xDe6e08ac208088cc62812Ba30608D852c6B0EcBc';
+const MARKET_ID =
+  '0xc2c3e4b656f4b82649c8adbe82b3284c85cc7dc57c6dc8df6ca3dad7d2740d75';
+
+const SECONDS_PER_DAY = 86400;
+const MARKET_ABI =
+  'function market(bytes32) view returns (uint128 totalSupplyAssets, uint128 totalSupplyShares, uint128 totalBorrowAssets, uint128 totalBorrowShares, uint128 lastUpdate, uint128 fee)';
+const CONVERT_ABI =
+  'function convertToAssets(uint256 shares) view returns (uint256)';
+
+const getBlock = async (timestamp) => {
+  const res = await axios.get(
+    `https://coins.llama.fi/block/${CHAIN}/${timestamp}`
+  );
+  return res.data.height;
+};
+
+const apy = async () => {
+  const now = Math.floor(Date.now() / 1000);
+  const block7d = await getBlock(now - 7 * SECONDS_PER_DAY);
+
+  // --- TVL ---
+  const [usd3TotalAssets, susd3TotalAssets, usd3Pps] = await Promise.all([
+    sdk.api.abi.call({
+      target: USD3,
+      abi: 'function totalAssets() view returns (uint256)',
+      chain: CHAIN,
+    }),
+    sdk.api.abi.call({
+      target: sUSD3,
+      abi: 'function totalAssets() view returns (uint256)',
+      chain: CHAIN,
+    }),
+    sdk.api.abi.call({
+      target: USD3,
+      abi: 'function pricePerShare() view returns (uint256)',
+      chain: CHAIN,
+    }),
+  ]);
+
+  const usd3TvlUsd = Number(usd3TotalAssets.output) / 1e6;
+  const susd3TvlUsd =
+    (Number(susd3TotalAssets.output) / 1e6) *
+    (Number(usd3Pps.output) / 1e6);
+
+  // --- APY ---
+  // USD3 APY = Aave supply rate (from waUSDC rate growth)
+  // sUSD3 APY = (credit market supply rate + Aave rate) * leverage
+  //   where leverage = USD3 TVL / sUSD3 TVL
+  //   because 100% performance fee redirects all USD3 vault yield to sUSD3
+
+  // Fetch waUSDC rates and MorphoCredit market data at current + 7d ago
+  const [waRateNow, waRate7d, marketNow, market7d] = await Promise.all([
+    sdk.api.abi.call({
+      target: waUSDC,
+      abi: CONVERT_ABI,
+      params: [1e6],
+      chain: CHAIN,
+    }),
+    sdk.api.abi.call({
+      target: waUSDC,
+      abi: CONVERT_ABI,
+      params: [1e6],
+      chain: CHAIN,
+      block: block7d,
+    }),
+    sdk.api.abi.call({
+      target: MORPHO_CREDIT,
+      abi: MARKET_ABI,
+      params: [MARKET_ID],
+      chain: CHAIN,
+    }),
+    sdk.api.abi.call({
+      target: MORPHO_CREDIT,
+      abi: MARKET_ABI,
+      params: [MARKET_ID],
+      chain: CHAIN,
+      block: block7d,
+    }),
+  ]);
+
+  // Aave APY from waUSDC rate growth (7d)
+  const aaveApy =
+    Number(waRate7d.output) > 0
+      ? (Math.pow(Number(waRateNow.output) / Number(waRate7d.output), 365 / 7) - 1) * 100
+      : null;
+
+  // MorphoCredit supply APY from supply share price growth (7d)
+  // supply share price = totalSupplyAssets / totalSupplyShares
+  const sharesNow = Number(marketNow.output.totalSupplyShares);
+  const shares7d = Number(market7d.output.totalSupplyShares);
+  const sppNow =
+    sharesNow > 0
+      ? Number(marketNow.output.totalSupplyAssets) / sharesNow
+      : null;
+  const spp7d =
+    shares7d > 0
+      ? Number(market7d.output.totalSupplyAssets) / shares7d
+      : null;
+  const creditApy =
+    Number.isFinite(sppNow) && Number.isFinite(spp7d) && spp7d > 0
+      ? (Math.pow(sppNow / spp7d, 365 / 7) - 1) * 100
+      : null;
+
+  // sUSD3 gets ALL yield (Aave + credit) from USD3 vault via 100% performance fee
+  // Levered by the ratio of USD3 TVL to sUSD3 TVL
+  const leverage = susd3TvlUsd > 0 ? usd3TvlUsd / susd3TvlUsd : 0;
+  const totalVaultYield = (creditApy != null ? creditApy : 0) + (aaveApy != null ? aaveApy : 0);
+  const susd3Apy = creditApy != null || aaveApy != null ? totalVaultYield * leverage : null;
+
+  return [
+    {
+      pool: `${USD3}-${CHAIN}`.toLowerCase(),
+      chain: utils.formatChain(CHAIN),
+      project: PROJECT,
+      symbol: 'USD3',
+      tvlUsd: usd3TvlUsd,
+      apyBase: aaveApy,
+      underlyingTokens: [USDC],
+      url: 'https://app.3jane.xyz/supply',
+    },
+    {
+      pool: `${sUSD3}-${CHAIN}`.toLowerCase(),
+      chain: utils.formatChain(CHAIN),
+      project: PROJECT,
+      symbol: 'sUSD3',
+      tvlUsd: susd3TvlUsd,
+      apyBase: susd3Apy,
+      underlyingTokens: [USD3],
+      url: 'https://app.3jane.xyz/supply',
+    },
+  ].filter((p) => utils.keepFinite(p));
+};
+
+module.exports = {
+  timetravel: false,
+  apy,
+  url: 'https://app.3jane.xyz/supply',
+};