aave-protocol-v2/helpers/oracles-helpers.ts

import {
  tEthereumAddress,
  iMultiPoolsAssets,
  IMarketRates,
  iAssetBase,
  iAssetAggregatorBase,
  eContractid,
} from './types';

import {LendingRateOracle} from '../types/LendingRateOracle';
import {PriceOracle} from '../types/PriceOracle';
import {MockAggregator} from '../types/MockAggregator';
import {deployMockAggregator, getContract} from './contracts-helpers';
import {waitForTx} from './misc-utils';
import {verifyContract} from './etherscan-verification';

export const setInitialMarketRatesInRatesOracle = async (
  marketRates: iMultiPoolsAssets<IMarketRates>,
  assetsAddresses: {[x: string]: tEthereumAddress},
  lendingRateOracleInstance: LendingRateOracle
) => {
  for (const [assetSymbol, {borrowRate}] of Object.entries(marketRates) as [
    string,
    IMarketRates
  ][]) {
    const assetAddressIndex = Object.keys(assetsAddresses).findIndex(
      (value) => value === assetSymbol
    );
    const [, assetAddress] = (Object.entries(assetsAddresses) as [string, string][])[
      assetAddressIndex
    ];
    await lendingRateOracleInstance.setMarketBorrowRate(assetAddress, borrowRate);
  }
};

export const setInitialAssetPricesInOracle = async (
  prices: iAssetBase<tEthereumAddress>,
  assetsAddresses: iAssetBase<tEthereumAddress>,
  priceOracleInstance: PriceOracle
) => {
  for (const [assetSymbol, price] of Object.entries(prices) as [string, string][]) {
    const assetAddressIndex = Object.keys(assetsAddresses).findIndex(
      (value) => value === assetSymbol
    );
    const [, assetAddress] = (Object.entries(assetsAddresses) as [string, string][])[
      assetAddressIndex
    ];
    await waitForTx(await priceOracleInstance.setAssetPrice(assetAddress, price));
  }
};

export const deployAllMockAggregators = async (
  initialPrices: iAssetAggregatorBase<string>,
  verify?: boolean
) => {
  const aggregators: {[tokenSymbol: string]: MockAggregator} = {};
  for (const tokenContractName of Object.keys(initialPrices)) {
    if (tokenContractName !== 'ETH') {
      const priceIndex = Object.keys(initialPrices).findIndex(
        (value) => value === tokenContractName
      );
      const [, price] = (Object.entries(initialPrices) as [string, string][])[priceIndex];
      aggregators[tokenContractName] = await deployMockAggregator(price, verify);
    }
  }
  return aggregators;
};