feat(maple): Implemented Maple v2 and migrate to template (#1910)

src/apps/maple/common/maple.pool.definition-resolver.ts

@@ -0,0 +1,50 @@
+import { Injectable } from '@nestjs/common';
+import { gql, GraphQLClient } from 'graphql-request';
+
+import { CacheOnInterval } from '~cache/cache-on-interval.decorator';
+import { Network } from '~types/network.interface';
+
+import { MAPLE_DEFINITION } from '../maple.definition';
+
+type MaplePoolResponse = {
+  poolV2S?: {
+    id: string;
+    name: string;
+    apyData: {
+      apy: string;
+    };
+  }[];
+};
+
+const ALL_POOLS_QUERY = gql`
+  {
+    poolV2S {
+      id
+      name
+      apyData {
+        apy
+      }
+    }
+  }
+`;
+
+@Injectable()
+export class MaplePoolDefinitionResolver {
+  @CacheOnInterval({
+    key: `studio:${MAPLE_DEFINITION.id}:${MAPLE_DEFINITION.groups.pool.id}:${Network.ETHEREUM_MAINNET}:pool-data`,
+    timeout: 15 * 60 * 1000,
+    failOnMissingData: false,
+  })
+  async getPoolDefinitions() {
+    const client = new GraphQLClient('https://api.maple.finance/v2/graphql', {
+      headers: { 'Content-Type': 'application/json' },
+    });
+    const pairsData = await client.request<MaplePoolResponse>(ALL_POOLS_QUERY);
+
+    return (pairsData.poolV2S ?? []).map(pool => ({
+      address: pool.id.toLowerCase(),
+      poolName: pool.name,
+      apy: Number(pool.apyData.apy),
+    }));
+  }
+}