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

import {iMultiPoolsAssets, IReserveParams, tEthereumAddress} from './types';
import {LendingPool} from '../types/LendingPool';
import {LendingPoolConfigurator} from '../types/LendingPoolConfigurator';
import {AaveProtocolTestHelpers} from '../types/AaveProtocolTestHelpers';
import {waitForTx} from './misc-utils';

export const enableReservesToBorrow = async (
  reservesParams: iMultiPoolsAssets<IReserveParams>,
  tokenAddresses: {[symbol: string]: tEthereumAddress},
  helpers: AaveProtocolTestHelpers,
  lendingPoolConfigurator: LendingPoolConfigurator
) => {
  for (const [assetSymbol, {borrowingEnabled, stableBorrowRateEnabled}] of Object.entries(
    reservesParams
  ) as [string, IReserveParams][]) {
    if (!borrowingEnabled) continue;
    try {
      const assetAddressIndex = Object.keys(tokenAddresses).findIndex(
        (value) => value === assetSymbol
      );
      const [, tokenAddress] = (Object.entries(tokenAddresses) as [string, string][])[
        assetAddressIndex
      ];
      const {borrowingEnabled: borrowingAlreadyEnabled} = await helpers.getReserveConfigurationData(
        tokenAddress
      );

      if (borrowingAlreadyEnabled) {
        console.log(`Reserve ${assetSymbol} is already enabled for borrowing, skipping`);
        continue;
      }

      console.log('Enabling borrowing on reserve ', assetSymbol);

      await waitForTx(
        await lendingPoolConfigurator.enableBorrowingOnReserve(
          tokenAddress,
          stableBorrowRateEnabled
        )
      );
    } catch (e) {
      console.log(
        `Enabling reserve for borrowings for ${assetSymbol} failed with error ${e}. Skipped.`
      );
    }
  }
};

export const enableReservesAsCollateral = async (
  reservesParams: iMultiPoolsAssets<IReserveParams>,
  tokenAddresses: {[symbol: string]: tEthereumAddress},
  helpers: AaveProtocolTestHelpers,
  lendingPoolConfigurator: LendingPoolConfigurator
) => {
  for (const [
    assetSymbol,
    {baseLTVAsCollateral, liquidationBonus, liquidationThreshold},
  ] of Object.entries(reservesParams) as [string, IReserveParams][]) {
    if (baseLTVAsCollateral === '-1') continue;

    const assetAddressIndex = Object.keys(tokenAddresses).findIndex(
      (value) => value === assetSymbol
    );
    const [, tokenAddress] = (Object.entries(tokenAddresses) as [string, string][])[
      assetAddressIndex
    ];
    const {usageAsCollateralEnabled: alreadyEnabled} = await helpers.getReserveConfigurationData(
      tokenAddress
    );

    if (alreadyEnabled) {
      console.log(`Reserve ${assetSymbol} is already enabled as collateral, skipping`);
      continue;
    }

    try {
      console.log(`Enabling reserve ${assetSymbol} as collateral`);

      await waitForTx(
        await lendingPoolConfigurator.enableReserveAsCollateral(
          tokenAddress,
          baseLTVAsCollateral,
          liquidationThreshold,
          liquidationBonus
        )
      );
    } catch (e) {
      console.log(
        `Enabling reserve as collateral for ${assetSymbol} failed with error ${e}. Skipped.`
      );
    }
  }
};