From b94a845e652699bf6489e8c1e58aaf52e21afb0e Mon Sep 17 00:00:00 2001
From: piekczyk <sebastian@oazoapps.com>
Date: Wed, 26 Jun 2024 13:38:46 +0200
Subject: [PATCH] Aave GHO markets (#3969)

---
 .../aave-v3/aave-v3-pool-data-provider.ts     | 16 ++++++++++++++
 .../strategies/ethereum-aave-v3-strategies.ts |  6 +++++
 .../aave-v3-products/ethereum-mainnet.ts      | 22 +++++++++++++++++++
 .../update-handlers/aaveV3/aaveV3Handler.ts   | 22 ++++++++++++++++++-
 4 files changed, 65 insertions(+), 1 deletion(-)

diff --git a/blockchain/aave-v3/aave-v3-pool-data-provider.ts b/blockchain/aave-v3/aave-v3-pool-data-provider.ts
index 51a49f5d6d..dfe4e65377 100644
--- a/blockchain/aave-v3/aave-v3-pool-data-provider.ts
+++ b/blockchain/aave-v3/aave-v3-pool-data-provider.ts
@@ -148,6 +148,22 @@ export function getAaveV3ReserveData({
   })
 }
 
+export function getAaveV3BorrowCap({
+  token,
+  networkId,
+}: AaveV3ReserveDataParameters): Promise<BigNumber> {
+  const { contract, tokenMappings } = networkMappings[networkId]()
+  const tokenAddress = wethToEthAddress(tokenMappings, token)
+  warnIfAddressIsZero(tokenAddress, networkId, 'aaveV3PoolDataProvider', 'getReserveData')
+
+  return (
+    contract
+      .getReserveCaps(tokenAddress)
+      // doesn't require conversion from wei since value is already in correct format
+      .then((result) => new BigNumber(result.borrowCap.toString()))
+  )
+}
+
 export function getAaveV3ReserveConfigurationData({
   networkId,
   token,
diff --git a/features/aave/strategies/ethereum-aave-v3-strategies.ts b/features/aave/strategies/ethereum-aave-v3-strategies.ts
index 475621f46c..bbd1cae219 100644
--- a/features/aave/strategies/ethereum-aave-v3-strategies.ts
+++ b/features/aave/strategies/ethereum-aave-v3-strategies.ts
@@ -272,6 +272,12 @@ const availableTokenPairs: TokenPairConfig[] = [
     strategyType: StrategyType.Long,
     productTypes: borrowAndMultiply,
   },
+  {
+    collateral: 'WEETH',
+    debt: 'GHO',
+    strategyType: StrategyType.Long,
+    productTypes: borrowAndMultiply,
+  },
   {
     collateral: 'ETH',
     debt: 'USDT',
diff --git a/handlers/product-hub/update-handlers/aaveV3/aave-v3-products/ethereum-mainnet.ts b/handlers/product-hub/update-handlers/aaveV3/aave-v3-products/ethereum-mainnet.ts
index 96da1d5c3a..9e815b7c2d 100644
--- a/handlers/product-hub/update-handlers/aaveV3/aave-v3-products/ethereum-mainnet.ts
+++ b/handlers/product-hub/update-handlers/aaveV3/aave-v3-products/ethereum-mainnet.ts
@@ -896,6 +896,28 @@ export const aaveV3EthereumMainnetProductHubProducts: ProductHubItemWithoutAddre
     network: NetworkNames.ethereumMainnet,
     protocol: LendingProtocol.AaveV3,
   },
+  {
+    product: [OmniProductType.Multiply],
+    primaryToken: 'WEETH',
+    primaryTokenGroup: getTokenGroup('WEETH'),
+    secondaryToken: 'GHO',
+    depositToken: 'WEETH',
+    label: 'WEETH/GHO',
+    multiplyStrategyType: 'long',
+    multiplyStrategy: 'Long ETH',
+    network: NetworkNames.ethereumMainnet,
+    protocol: LendingProtocol.AaveV3,
+  },
+  {
+    product: [OmniProductType.Borrow],
+    primaryToken: 'WEETH',
+    primaryTokenGroup: getTokenGroup('WEETH'),
+    secondaryToken: 'GHO',
+    depositToken: 'WEETH',
+    label: 'WEETH/GHO',
+    network: NetworkNames.ethereumMainnet,
+    protocol: LendingProtocol.AaveV3,
+  },
   {
     product: [OmniProductType.Multiply],
     primaryToken: 'ETH',
diff --git a/handlers/product-hub/update-handlers/aaveV3/aaveV3Handler.ts b/handlers/product-hub/update-handlers/aaveV3/aaveV3Handler.ts
index 6a10c51d0a..9f69ed80ab 100644
--- a/handlers/product-hub/update-handlers/aaveV3/aaveV3Handler.ts
+++ b/handlers/product-hub/update-handlers/aaveV3/aaveV3Handler.ts
@@ -3,6 +3,7 @@ import BigNumber from 'bignumber.js'
 import type { AaveV3SupportedNetwork } from 'blockchain/aave-v3'
 import {
   aaveV3SupportedNetworkList,
+  getAaveV3BorrowCap,
   getAaveV3EModeCategoryForAsset,
   getAaveV3ReserveConfigurationData,
   getAaveV3ReserveData,
@@ -39,6 +40,8 @@ const networkNameToIdMap = {
   [NetworkNames.baseMainnet]: NetworkIds.BASEMAINNET,
 }
 
+const tokensWithoutAssociatedToken = ['GHO']
+
 const getAaveV3TokensData = async (networkName: AaveV3Networks, tickers: Tickers) => {
   const currentNetworkProducts = aaveV3ProductHubProducts.filter(
     (product) => product.network === networkName,
@@ -62,13 +65,30 @@ const getAaveV3TokensData = async (networkName: AaveV3Networks, tickers: Tickers
   const tokensReserveDataPromises = secondaryTokensList.map(async (token) => {
     const reserveData = await getAaveV3ReserveData({ token, networkId })
     const debtTokenPrice = new BigNumber(getTokenPrice(token, tickers, 'aaveV3Handler'))
+
+    const fee = aaveLikeAprToApy(reserveData.variableBorrowRate)
+
+    if (tokensWithoutAssociatedToken.includes(token.toUpperCase())) {
+      const borrowCap = await getAaveV3BorrowCap({ token, networkId })
+
+      return {
+        [token]: {
+          liquidity: borrowCap
+            .minus(reserveData.totalStableDebt)
+            .minus(reserveData.totalVariableDebt)
+            .times(debtTokenPrice),
+          fee,
+        },
+      }
+    }
+
     return {
       [token]: {
         liquidity: reserveData.totalAToken
           .minus(reserveData.totalStableDebt)
           .minus(reserveData.totalVariableDebt)
           .times(debtTokenPrice),
-        fee: aaveLikeAprToApy(reserveData.variableBorrowRate),
+        fee,
       },
     }
   })