From 81af5ac0eba63dbb7ace262a2b3b7c63deb64694 Mon Sep 17 00:00:00 2001
From: Giuseppe Palazzolo <38705839+palace22@users.noreply.github.com>
Date: Thu, 3 Oct 2024 10:30:03 +0200
Subject: [PATCH] Add folks finance xchain (#11804)

Co-authored-by: g1nt0ki <99907941+g1nt0ki@users.noreply.github.com>
---
 projects/folks-xchain/constants.js | 59 ++++++++++++++++++++++++++++++
 projects/folks-xchain/index.js     | 35 ++++++++++++++++++
 2 files changed, 94 insertions(+)
 create mode 100644 projects/folks-xchain/constants.js
 create mode 100644 projects/folks-xchain/index.js

diff --git a/projects/folks-xchain/constants.js b/projects/folks-xchain/constants.js
new file mode 100644
index 00000000000..ba7d50782a9
--- /dev/null
+++ b/projects/folks-xchain/constants.js
@@ -0,0 +1,59 @@
+const HubPoolAbi = {
+  getDepositData: "function getDepositData() view returns (uint16 optimalUtilisationRatio, uint256 totalAmount, uint256 interestRate, uint256 interestIndex)",
+  getVariableBorrowData: "function getVariableBorrowData() view returns (uint32 vr0, uint32 vr1, uint32 vr2, uint256 totalAmount, uint256 interestRate, uint256 interestIndex)",
+  getStableBorrowData: "function getStableBorrowData() view returns (uint32 sr0, uint32 sr1, uint32 sr2, uint32 sr3, uint16 optimalStableToTotalDebtRatio, uint16 rebalanceUpUtilisationRatio, uint16 rebalanceUpDepositInterestRate, uint16 rebalanceDownDelta, uint256 totalAmount, uint256 interestRate, uint256 averageInterestRate)"
+}
+const HubPools = {
+  'avax': [
+    { // USDC      
+      poolAddress: "0x88f15e36308ED060d8543DA8E2a5dA0810Efded2",
+      tokenAddress: "0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E",
+    },
+    { // AVAX      
+      poolAddress: "0x0259617bE41aDA4D97deD60dAf848Caa6db3F228",
+      tokenAddress: "0x0000000000000000000000000000000000000000",
+      chainPoolAddress: '0xe69e068539Ee627bAb1Ce878843a6C76484CBd2c',
+    },
+    { // sAVAX      
+      poolAddress: "0x7033105d1a527d342bE618ab1F222BB310C8d70b",
+      tokenAddress: "0x2b2C81e08f1Af8835a78Bb2A90AE924ACE0eA4bE",
+      chainPoolAddress: '0x23a96D92C80E8b926dA40E574d615d9e806A87F6',
+    },
+    { // wETH_ava      
+      poolAddress: "0x795CcF6f7601edb41E4b3123c778C56F0F19389A",
+      tokenAddress: "0x49D5c2BdFfac6CE2BFdB6640F4F80f226bc10bAB",
+      chainPoolAddress: '0x0e563B9fe6D9EF642bDbA20D53ac5137EB0d78DC',
+    },
+    { // BTCb_ava      
+      poolAddress: "0x1C51AA1516e1156d98075F2F64e259906051ABa9",
+      tokenAddress: "0x152b9d0FdC40C096757F570A51E494bd4b943E50",
+      chainPoolAddress: '0xef7a6EBEDe2ad558DB8c36Df65365b209E5d57dC',
+    },
+  ],
+  'ethereum': [
+    // excluding USDC cause bridged
+    { // ETH_eth      
+      poolAddress: "0xB6DF8914C084242A19A4C7fb15368be244Da3c75",
+      tokenAddress: "0x0000000000000000000000000000000000000000",
+      chainPoolAddress: '0xe3B0e4Db870aA58A24f87d895c62D3dc5CD05883',
+    },
+    { // wBTC_eth      
+      poolAddress: "0x9936812835476504D6Cf495F4F0C718Ec19B3Aff",
+      chainPoolAddress: "0xb39c03297E87032fF69f4D42A6698e4c4A934449",
+      tokenAddress: "0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599",
+    },
+  ],
+  'base': [
+    // excluding USDC cause bridged
+    { // ETH_base      
+      poolAddress: "0x51958ed7B96F57142CE63BB223bbd9ce23DA7125",
+      tokenAddress: "0x0000000000000000000000000000000000000000",
+      chainPoolAddress: '0xe3B0e4Db870aA58A24f87d895c62D3dc5CD05883',
+    },
+  ]
+}
+
+module.exports = {
+  HubPoolAbi,
+  HubPools,
+};
diff --git a/projects/folks-xchain/index.js b/projects/folks-xchain/index.js
new file mode 100644
index 00000000000..9e78218194d
--- /dev/null
+++ b/projects/folks-xchain/index.js
@@ -0,0 +1,35 @@
+const sdk = require('@defillama/sdk')
+const { HubPools, HubPoolAbi, } = require("./constants");
+
+async function tvl(api) {
+  const tokensAndOwners = HubPools[api.chain].map(pool => [pool.tokenAddress, pool.chainPoolAddress ?? pool.poolAddress])
+  return api.sumTokens({ tokensAndOwners })
+}
+
+async function borrowed(api) {
+  const HubPoolsChain = HubPools[api.chain]
+  let chainApi = api
+  if (api.chain !== 'avax') {
+    chainApi = new sdk.ChainApi({ chain: 'avax', timestamp: api.timestamp })
+    await chainApi.getBlock()
+  }
+  const targets = HubPoolsChain.map(pool => pool.poolAddress)
+
+  const [varBorrowsData, stableBorrowsData] = await Promise.all([
+    await chainApi.multiCall({ calls: targets, abi: HubPoolAbi.getVariableBorrowData, }),
+    await chainApi.multiCall({ calls: targets, abi: HubPoolAbi.getStableBorrowData, })
+  ]);
+
+  HubPoolsChain.forEach((pool, idx) => {
+    api.add(pool.tokenAddress, Number(varBorrowsData[idx][3]) + Number(stableBorrowsData[idx][8]))
+  })
+  return api.getBalances()
+}
+
+module.exports = {
+  methodology: "The Folks Finance xChain states are saved in the Hub chain contracts i.e. Avalanche; TVL counts deposited total amount values for each pool, borrowed counts variable and stable borrowed total amount values for each pool",
+}
+
+Object.keys(HubPools).forEach(chain => {
+  module.exports[chain] = { tvl, borrowed, }
+})
\ No newline at end of file