Ensuro: removes deprecated pools and adds new ones

src/adaptors/ensuro/index.js

@@ -1,65 +1,108 @@
 const sdk = require('@defillama/sdk');
-const { getProvider } = require('@defillama/sdk/build/general');
 const ethers = require('ethers');
 const axios = require('axios');
 
+// Idea of using alchemyKey copied from ../mellow-yield/index.js, but now with better code
+const alchemy_url_regex = /https:[/][/].*alchemy[.]com[/]v2[/]([^/]+)/g;
+
+const extractKey = (alchemy_full_url) => {
+  console.log('alchemy_full_url', alchemy_full_url);
+  const match = alchemy_url_regex.exec(alchemy_full_url);
+  if (match === null) return null;
+  console.log('match', match, match[1]);
+  return match[1];
+};
+
 const addressBook = {
   polygon: {
-    usdc: "0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174",
+    usdc: '0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174',
     eTokens: [
       // eTokens
-      {name: "eToken Junior Koala", address: "0x8d2Ee82c4172B2138B06b8037d769cBfAf9C0274", symbol: "eUSDJrKo"},
-      {name: "eToken Senior", address: "0x55bAe6690d46EA94D7F05DF7c80A85E322421fB6", symbol: "eUSDSr"},
-      {name: "eToken Innov Zone", address: "0x1C48Accaf6f8106883AA1973A45F02525652DEfC", symbol: "eUSDJrIZ"},
-      // Commenting out these two pools, since they aren't open to the general public for now
-      // {name: "eToken Junior Koala BMA", address: "0xBC33c283A37d46ABA17BC5F8C27b27242688DeC6", symbol: "eUSDJrKoBMA"},
-      // {name: "eToken Senior BMA", address: "0xF383eF2D31E1d4a19B3e04ca2937DB6A8DA9f229", symbol: "eUSDSrBMA"},
+      {
+        name: 'Jr Koala BMA',
+        address: '0xBC33c283A37d46ABA17BC5F8C27b27242688DeC6',
+        symbol: 'eUSDCKoBMAJr',
+      },
+      {
+        name: 'Sr BMA',
+        address: '0xF383eF2D31E1d4a19B3e04ca2937DB6A8DA9f229',
+        symbol: 'eUSDCBMASr',
+      },
+      {
+        name: 'Jr Spot BMA',
+        address: '0x6229D78658305a301E177f9dAEa3a0799fd1528C',
+        symbol: 'eUSDCGSJr',
+      },
     ],
-  }
+  },
 };
 
-const abiTransfer = ["event Transfer(address indexed from, address indexed to, uint256 value)"];
+const abiTransfer = [
+  'event Transfer(address indexed from, address indexed to, uint256 value)',
+];
 
 const getApy = async () => {
   const timestamp1dayAgo = Math.floor(Date.now() / 1000) - 86400;
   const block1dayAgo = (
     await axios.get(`https://coins.llama.fi/block/polygon/${timestamp1dayAgo}`)
   ).data.height;
 
-  const provider = new ethers.providers.JsonRpcProvider(process.env.ALCHEMY_CONNECTION_POLYGON);
+  const alchemyKey = extractKey(process.env.ALCHEMY_CONNECTION_ETHEREUM || '');
+
+  if (alchemyKey === null)
+    throw new Error(
+      'Environment variable ALCHEMY_CONNECTION_ETHEREUM not defined or not in the expected format'
+    );
+  const provider = new ethers.providers.AlchemyProvider('matic', alchemyKey);
 
-  return await Promise.all(addressBook.polygon.eTokens.map(async (etk) => {
-    const [tsNow, tsOneDayAgo] = await Promise.all([
-      sdk.api.erc20.totalSupply({ target: etk.address, chain: "polygon" }),
-      sdk.api.erc20.totalSupply({ target: etk.address, chain: "polygon", block: block1dayAgo }),
-    ]);
+  return await Promise.all(
+    addressBook.polygon.eTokens.map(async (etk) => {
+      const [tsNow, tsOneDayAgo] = await Promise.all([
+        sdk.api.erc20.totalSupply({ target: etk.address, chain: 'polygon' }),
+        sdk.api.erc20.totalSupply({
+          target: etk.address,
+          chain: 'polygon',
+          block: block1dayAgo,
+        }),
+      ]);
 
-    const contract = new ethers.Contract(etk.address, abiTransfer, provider);
-    const transfers = await contract.queryFilter(contract.filters.Transfer(), block1dayAgo);
-    const netDeposits = transfers.filter((evt) => (
-      evt.args.from === ethers.constants.AddressZero || 
-      evt.args.to === ethers.constants.AddressZero
-    )).reduce((accumulator, evt) => (
-      evt.args.from === ethers.constants.AddressZero ? 
-        accumulator.add(evt.args.value) : 
-        accumulator.sub(evt.args.value)
-    ), ethers.BigNumber.from(0)).toNumber();
-    console.log(netDeposits);
-    console.log(tsNow.output);
-    const dailyApr = (tsNow.output - tsOneDayAgo.output - netDeposits) / tsOneDayAgo.output;
-    // Using apr to apy formula from https://www.aprtoapy.com/
-    const apy = (Math.pow(1 + dailyApr, 365) - 1) * 100;
-    return {
-      pool: etk.address,
-      chain: 'polygon',
-      project: 'ensuro',
-      symbol: etk.symbol,
-      tvlUsd: tsNow.output / 1e6,
-      apyBase: apy,
-      url: `https://app.ensuro.co/eTokens/${etk.address}`,
-      underlyingTokens: [addressBook.polygon.usdc],
-    };
-  }));
+      const contract = new ethers.Contract(etk.address, abiTransfer, provider);
+      const transfers = await contract.queryFilter(
+        contract.filters.Transfer(),
+        block1dayAgo
+      );
+      const netDeposits = transfers
+        .filter(
+          (evt) =>
+            evt.args.from === ethers.constants.AddressZero ||
+            evt.args.to === ethers.constants.AddressZero
+        )
+        .reduce(
+          (accumulator, evt) =>
+            evt.args.from === ethers.constants.AddressZero
+              ? accumulator.add(evt.args.value)
+              : accumulator.sub(evt.args.value),
+          ethers.BigNumber.from(0)
+        )
+        .toNumber();
+      console.log(netDeposits);
+      console.log(tsNow.output);
+      const dailyApr =
+        (tsNow.output - tsOneDayAgo.output - netDeposits) / tsOneDayAgo.output;
+      // Using apr to apy formula from https://www.aprtoapy.com/
+      const apy = (Math.pow(1 + dailyApr, 365) - 1) * 100;
+      return {
+        pool: etk.address,
+        chain: 'polygon',
+        project: 'ensuro',
+        symbol: etk.symbol,
+        tvlUsd: tsNow.output / 1e6,
+        apyBase: apy,
+        url: `https://app.ensuro.co/eTokens/${etk.address}`,
+        underlyingTokens: [addressBook.polygon.usdc],
+      };
+    })
+  );
 };
 
 module.exports = {