fix: euler tvl (#567)

src/apps/euler/ethereum/euler.tvl-fetcher.ts

@@ -1,5 +1,6 @@
 import { Inject } from '@nestjs/common';
 import { gql } from 'graphql-request';
+import { sum } from 'lodash';
 
 import { IAppToolkit, APP_TOOLKIT } from '~app-toolkit/app-toolkit.interface';
 import { Register } from '~app-toolkit/decorators';
@@ -12,8 +13,9 @@ const appId = EULER_DEFINITION.id;
 const network = Network.ETHEREUM_MAINNET;
 
 interface EulerMarket {
-  totalBalancesEth: string;
-  totalBorrowsEth: string;
+  symbol: string;
+  totalBalances: string;
+  totalBorrows: string;
 }
 
 interface EulerMarketsResponse {
@@ -26,8 +28,9 @@ const query = gql`
   {
     eulerMarketStore(id: "euler-market-store") {
       markets {
-        totalBalancesEth
-        totalBorrowsEth
+        symbol
+        totalBalances
+        totalBorrows
       }
     }
   }
@@ -38,11 +41,21 @@ export class EthereumEulerTvlFetcher implements TvlFetcher {
   constructor(@Inject(APP_TOOLKIT) private readonly appToolkit: IAppToolkit) {}
 
   async getTvl() {
+    const prices = await this.appToolkit.getBaseTokenPrices(network);
     const endpoint = 'https://api.thegraph.com/subgraphs/name/euler-xyz/euler-mainnet';
     const data = await this.appToolkit.helpers.theGraphHelper.request<EulerMarketsResponse>({ endpoint, query });
-    return data.eulerMarketStore.markets.reduce(
-      (acc, cur) => acc + (Number(cur.totalBalancesEth) - Number(cur.totalBorrowsEth)),
-      0,
-    );
+    const markets = data.eulerMarketStore.markets;
+
+    const tvlPerMarket = markets.map(market => {
+      const baseToken = prices.find(x => x.symbol === market.symbol);
+      if (!baseToken) return 0;
+
+      const totalBalance = Number(market.totalBalances) / 10 ** 18;
+      const totalBorrows = Number(market.totalBorrows) / 10 ** 18;
+
+      return (totalBalance - totalBorrows) * baseToken.price;
+    });
+
+    return sum(tvlPerMarket);
   }
 }