feat: update Arrakis Finance to add Arrakis Modular TVL (DefiLlama#11973)

Co-authored-by: g1nt0ki <[email protected]>

Author: danieljcss

projects/arrakis-modular/index.js

@@ -0,0 +1,41 @@
+const config = {
+  ethereum: {
+    factory: '0x820FB8127a689327C863de8433278d6181123982',
+    fromBlock: 20540819,
+  },
+  arbitrum: {
+    factory: '0x820FB8127a689327C863de8433278d6181123982',
+    fromBlock: 243467827,
+  },
+  base: {
+    factory: '0x820FB8127a689327C863de8433278d6181123982',
+    fromBlock: 18512550,
+  },
+}
+
+module.exports = {
+  doublecounted: true,
+};
+
+Object.keys(config).forEach(chain => {
+  const { factory } = config[chain]
+  module.exports[chain] = {
+    tvl: async (api) => {
+      const numPublicVaults = await api.call({ abi: 'uint256:numOfPublicVaults', target: factory })
+      const numPrivateVaults = await api.call({ abi: 'uint256:numOfPrivateVaults', target: factory })
+      const publicVaults = numPublicVaults > 0 ? await api.call({ abi: 'function publicVaults(uint256 startIndex_, uint256 endIndex_) returns (address[] memory)', target: factory, params: [0, numPublicVaults] }) : []
+      const privateVaults = numPrivateVaults > 0 ? await api.call({ abi: 'function privateVaults(uint256 startIndex_, uint256 endIndex_) returns (address[] memory)', target: factory, params: [0, numPrivateVaults] }) : []
+      const vaults = [...publicVaults, ...privateVaults]
+      const [token0s, token1s, bals] = await Promise.all([
+        api.multiCall({ abi: 'address:token0', calls: vaults }),
+        api.multiCall({ abi: 'address:token1', calls: vaults }),
+        api.multiCall({ abi: 'function totalUnderlying() view returns (uint256, uint256)', calls: vaults }),
+      ])
+
+      bals.forEach(([v0, v1], i) => {
+        api.add(token0s[i], v0)
+        api.add(token1s[i], v1)
+      })
+    }
+  }
+})