feat(gains-networks): Add staking positions (6.4.1)

src/apps/gains-network/arbitrum/gains-network.staking-v2.contract-position-fetcher.ts

@@ -0,0 +1,10 @@
+import { PositionTemplate } from '~app-toolkit/decorators/position-template.decorator';
+
+import { GainsNetworkStakingV2ContractPositionFetcher } from '../common/gains-network.staking-v2.contract-position-fetcher';
+
+@PositionTemplate()
+export class ArbitrumGainsNetworkStakingV2ContractPositionFetcher extends GainsNetworkStakingV2ContractPositionFetcher {
+  groupLabel = 'Staking';
+
+  stakingContractAddress = '0x7edde7e5900633f698eab0dbc97de640fc5dc015';
+}

src/apps/gains-network/common/gains-network.staking-v2.contract-position-fetcher.ts

@@ -0,0 +1,61 @@
+import { Inject } from '@nestjs/common';
+
+import { IAppToolkit, APP_TOOLKIT } from '~app-toolkit/app-toolkit.interface';
+import { getLabelFromToken } from '~app-toolkit/helpers/presentation/image.present';
+import { MetaType } from '~position/position.interface';
+import { ContractPositionTemplatePositionFetcher } from '~position/template/contract-position.template.position-fetcher';
+import {
+  GetDisplayPropsParams,
+  GetTokenBalancesParams,
+  GetTokenDefinitionsParams,
+} from '~position/template/contract-position.template.types';
+
+import { GainsNetworkViemContractFactory } from '../contracts';
+import { GainsNetworkStakingV2 } from '../contracts/viem';
+
+export abstract class GainsNetworkStakingV2ContractPositionFetcher extends ContractPositionTemplatePositionFetcher<GainsNetworkStakingV2> {
+  abstract stakingContractAddress: string;
+
+  constructor(
+    @Inject(APP_TOOLKIT) protected readonly appToolkit: IAppToolkit,
+    @Inject(GainsNetworkViemContractFactory) protected readonly contractFactory: GainsNetworkViemContractFactory,
+  ) {
+    super(appToolkit);
+  }
+
+  getContract(address: string) {
+    return this.contractFactory.gainsNetworkStakingV2({ address, network: this.network });
+  }
+
+  async getDefinitions() {
+    return [{ address: this.stakingContractAddress }];
+  }
+
+  async getTokenDefinitions({ contract }: GetTokenDefinitionsParams<GainsNetworkStakingV2>) {
+    return [
+      {
+        metaType: MetaType.SUPPLIED,
+        address: await contract.read.gns(),
+        network: this.network,
+      },
+      {
+        metaType: MetaType.CLAIMABLE,
+        address: await contract.read.dai(),
+        network: this.network,
+      },
+    ];
+  }
+
+  async getLabel({ contractPosition }: GetDisplayPropsParams<GainsNetworkStakingV2>) {
+    return getLabelFromToken(contractPosition.tokens[0]);
+  }
+
+  async getTokenBalancesPerPosition({ address, contract }: GetTokenBalancesParams<GainsNetworkStakingV2>) {
+    const [suppliedBalance, claimable] = await Promise.all([
+      contract.read.stakers([address]),
+      contract.read.pendingRewardDai([address]),
+    ]);
+
+    return [suppliedBalance[0], claimable];
+  }
+}