feat(p-stake): Convert PStake integration to templates

src/apps/p-stake/binance-smart-chain/p-stake.stake.token-fetcher.ts

@@ -0,0 +1,53 @@
+import { Inject } from '@nestjs/common';
+
+import { IAppToolkit, APP_TOOLKIT } from '~app-toolkit/app-toolkit.interface';
+import { ZERO_ADDRESS } from '~app-toolkit/constants/address';
+import { PositionTemplate } from '~app-toolkit/decorators/position-template.decorator';
+import { AppTokenTemplatePositionFetcher } from '~position/template/app-token.template.position-fetcher';
+import { GetDataPropsParams, GetPricePerShareParams } from '~position/template/app-token.template.types';
+
+import { PStakeContractFactory } from '../contracts';
+import { PStakeStkToken } from '../contracts/ethers/PStakeStkToken';
+
+@PositionTemplate()
+export class BinanceSmartChainPStakeStakeTokenFetcher extends AppTokenTemplatePositionFetcher<PStakeStkToken> {
+  groupLabel = 'Stake';
+
+  constructor(
+    @Inject(APP_TOOLKIT) protected readonly appToolkit: IAppToolkit,
+    @Inject(PStakeContractFactory) protected readonly contractFactory: PStakeContractFactory,
+  ) {
+    super(appToolkit);
+  }
+
+  getContract(address: string): PStakeStkToken {
+    return this.contractFactory.pStakeStkToken({ address, network: this.network });
+  }
+
+  async getAddresses() {
+    return ['0xc2e9d07f66a89c44062459a47a0d2dc038e4fb16'];
+  }
+
+  async getUnderlyingTokenAddresses() {
+    return [ZERO_ADDRESS];
+  }
+
+  async getPricePerShare({ multicall }: GetPricePerShareParams<PStakeStkToken>) {
+    const stakePoolAddress = '0xc228cefdf841defdbd5b3a18dfd414cc0dbfa0d8';
+    const stakePool = this.contractFactory.pStakePool({ address: stakePoolAddress, network: this.network });
+    const exchangeRate = await multicall.wrap(stakePool).exchangeRate();
+    return Number(exchangeRate.totalWei) / Number(exchangeRate.poolTokenSupply);
+  }
+
+  getLiquidity({ appToken }: GetDataPropsParams<PStakeStkToken>) {
+    return appToken.supply * appToken.price;
+  }
+
+  getReserves({ appToken }: GetDataPropsParams<PStakeStkToken>) {
+    return [appToken.pricePerShare[0] * appToken.supply];
+  }
+
+  getApy(_params: GetDataPropsParams<PStakeStkToken>) {
+    return 0;
+  }
+}