From 47d6fce0a54fa3228af2a8e9e58c5dfda276cbf1 Mon Sep 17 00:00:00 2001
From: Carl Wiles <131632522+CarlWiles@users.noreply.github.com>
Date: Tue, 15 Oct 2024 20:27:03 +0800
Subject: [PATCH] Fix/rho markets (#21)

* fix: Resolve the exchange rate discrepancy between blocks 9664314 and 9671174

* fix: exchange rate adjust

* fix: rho markets exchange rate

---------

Co-authored-by: Carl <carl@rhomarkets.com>
Co-authored-by: 0xroll <96259407+0xroll@users.noreply.github.com>
---
 adapters/rhomarkets/src/sdk/config.ts        |  6 ++++
 adapters/rhomarkets/src/sdk/marketDetails.ts | 30 ++++++++++++++------
 2 files changed, 28 insertions(+), 8 deletions(-)

diff --git a/adapters/rhomarkets/src/sdk/config.ts b/adapters/rhomarkets/src/sdk/config.ts
index 05bf245..e4e70c5 100644
--- a/adapters/rhomarkets/src/sdk/config.ts
+++ b/adapters/rhomarkets/src/sdk/config.ts
@@ -22,3 +22,9 @@ export const RPC_URLS = {
 export const WETH_ADDRESS = {
   [CHAINS.SCROLL]: "0x5300000000000000000000000000000000000004",
 };
+
+export const rUSDC_ADDRESS = "0xAE1846110F72f2DaaBC75B7cEEe96558289EDfc5";
+
+export const FIXED_BLOCK_NUMS = [9664314n, 10135815n];
+
+export const FIXED_EXCHANGE_RATE = 1020933877280826510n;
diff --git a/adapters/rhomarkets/src/sdk/marketDetails.ts b/adapters/rhomarkets/src/sdk/marketDetails.ts
index 856bb4e..c90a234 100644
--- a/adapters/rhomarkets/src/sdk/marketDetails.ts
+++ b/adapters/rhomarkets/src/sdk/marketDetails.ts
@@ -1,5 +1,11 @@
 import { createPublicClient, extractChain, http, getContract } from "viem";
-import { CHAINS, RPC_URLS } from "./config";
+import {
+  CHAINS,
+  FIXED_BLOCK_NUMS,
+  FIXED_EXCHANGE_RATE,
+  RPC_URLS,
+  rUSDC_ADDRESS,
+} from "./config";
 import { scroll } from "viem/chains";
 import coreAbi from "./abi/core.abi";
 import ltokenAbi from "./abi/ltoken.abi";
@@ -75,9 +81,8 @@ export const getMarketInfos = async (
       functionName: "symbol",
     })) as any,
   });
-  
 
-  const exchangeRateResults = await publicClient.multicall({
+  let exchangeRateResults = await publicClient.multicall({
     contracts: markets.map((m) => ({
       address: m.address,
       abi: m.abi,
@@ -92,16 +97,25 @@ export const getMarketInfos = async (
     const marketAddress = markets[i].address.toLowerCase();
     const underlyingAddress = underlyingAddresses[i];
 
+    // Fix rUSDC exchange rate issue that occurred between blocks 9664314 and 9671174
+    const fixedUSDCBlockData =
+      marketAddress.toLowerCase() === rUSDC_ADDRESS.toLowerCase() &&
+      blockNumber &&
+      blockNumber > FIXED_BLOCK_NUMS[0] &&
+      blockNumber < FIXED_BLOCK_NUMS[1];
+
     marketInfos.push({
       address: marketAddress,
       underlyingAddress,
       decimals: (decimalResults[i].result as number) || 0,
       underlyingSymbol: (underlyingSymbolResults[i].result as any) || "ETH",
-      exchangeRateStored: BigInt(
-        exchangeRateResults[i].status === "success"
-          ? (exchangeRateResults[i].result as any)
-          : 0
-      ),
+      exchangeRateStored: fixedUSDCBlockData
+        ? FIXED_EXCHANGE_RATE
+        : BigInt(
+            exchangeRateResults[i].status === "success"
+              ? (exchangeRateResults[i].result as any)
+              : 0
+          ),
     });
   }