update dfs-v3 adapter (#16958)

Author: Judy098

projects/dfs-v3/index.js

@@ -1,5 +1,8 @@
-const { uniV3Export } = require("../helper/uniswapV3");
+const { v3Tvl } = require('./v3.js');
 
-module.exports = uniV3Export({
-  xlayer: { factory: "0x70355463122C113b0931146F6C9488D9b0a09037", fromBlock: 40201510, },
-});
+module.exports = {
+  xlayer: {
+    tvl: v3Tvl,
+  },
+  misrepresentedTokens: true,
+};

projects/dfs-v3/v3.js

@@ -0,0 +1,88 @@
+const { sumTokens2 } = require('../helper/unwrapLPs');
+
+// --- V3 (Dynamic NFPM Traversal Method) ---
+
+// Contract Addresses
+const v3Factory = "0x70355463122C113b0931146F6C9488D9b0a09037"
+const v3NFPM = "0x6d2E4e1eF48fa1457c4eaa6a603d7DDB3974C1B3" // NonfungiblePositionManager
+
+// ABIs required for traversal
+const abi = {
+  NFPM: {
+    totalSupply: "uint256:totalSupply",
+    tokenByIndex: "function tokenByIndex(uint256 index) view returns (uint256)",
+    // positions (tokenId) returns: (nonce, operator, token0, token1, fee, ...)
+    positions: "function positions(uint256 tokenId) view returns (uint96, address, address, address, uint24, int24, int24, uint128, uint256, uint256, uint128, uint128)"
+  },
+  Factory: {
+    getPool: "function getPool(address tokenA, address tokenB, uint24 fee) view returns (address pool)"
+  }
+}
+
+/**
+ * Dynamic V3 TVL function.
+ */
+async function getV3Tvl(api) {
+  // 1. Get the total number of LP NFTs
+  const nftTotalSupply = await api.call({
+    target: v3NFPM,
+    abi: abi.NFPM.totalSupply,
+  });
+
+  // 2. Build multicall to get all NFT token IDs
+  const nftTokenIds = await api.multiCall({
+    target: v3NFPM,
+    abi: abi.NFPM.tokenByIndex,
+    calls: Array.from({ length: Number(nftTotalSupply) }, (_, i) => i),
+  });
+
+  // 3. Build multicall to get position info (token0, token1, fee) for all NFTs
+  const positionData = await api.multiCall({
+    target: v3NFPM,
+    abi: abi.NFPM.positions,
+    calls: nftTokenIds,
+  });
+
+  // 4. De-duplicate to find all unique pool "recipes" (token0, token1, fee)
+  const uniquePools = new Map();
+  positionData.forEach(pos => {
+    // pos[2] is token0, pos[3] is token1, pos[4] is fee
+    const key = `${pos[2]}-${pos[3]}-${pos[4]}`;
+    if (!uniquePools.has(key)) {
+      uniquePools.set(key, {
+        token0: pos[2],
+        token1: pos[3],
+        fee: pos[4]
+      });
+    }
+  });
+
+  // 5. Build multicall to get the actual pool addresses from the factory
+  const poolAddresses = await api.multiCall({
+    target: v3Factory,
+    abi: abi.Factory.getPool,
+    calls: Array.from(uniquePools.values()).map(p => ({
+      params: [p.token0, p.token1, p.fee]
+    }))
+  });
+
+  // 6. Format the data for sumTokens2: [ [token0, token1], poolAddress ]
+  const ownerTokens = [];
+  const pools = Array.from(uniquePools.values());
+  poolAddresses.forEach((poolAddress, i) => {
+    ownerTokens.push([
+      [pools[i].token0, pools[i].token1], poolAddress,
+    ]);
+  });
+
+  // 7. Calculate TVL and convert values to float
+  const balances = await sumTokens2({ api, ownerTokens, balances: {} });
+  const floatBalances = Object.fromEntries(
+    Object.entries(balances).map(([key, value]) => [key, parseFloat(value)])
+  );
+  return floatBalances;
+}
+
+module.exports = {
+  v3Tvl: getV3Tvl,
+};