import rawBRE from 'hardhat';
import { MockContract } from 'ethereum-waffle';
import {
  insertContractAddressInDb,
  getEthersSigners,
  registerContractInJsonDb,
} from '../helpers/contracts-helpers';
import {
  deployLendingPoolAddressesProvider,
  deployMintableERC20,
  deployLendingPoolAddressesProviderRegistry,
  deployLendingPoolConfigurator,
  deployLendingPool,
  deployPriceOracle,
  deployAaveOracle,
  deployLendingPoolCollateralManager,
  deployMockFlashLoanReceiver,
  deployWalletBalancerProvider,
  deployAaveProtocolDataProvider,
  deployLendingRateOracle,
  deployStableAndVariableTokensHelper,
  deployATokensAndRatesHelper,
  deployWETHGateway,
  deployWETHMocked,
} from '../helpers/contracts-deployments';
import { Signer } from 'ethers';
import { TokenContractId, eContractid, tEthereumAddress, AavePools } from '../helpers/types';
import { MintableERC20 } from '../types/MintableERC20';
import { getReservesConfigByPool } from '../helpers/configuration';
import { initializeMakeSuite } from './helpers/make-suite';

import {
  setInitialAssetPricesInOracle,
  deployAllMockAggregators,
  setInitialMarketRatesInRatesOracleByHelper,
} from '../helpers/oracles-helpers';
import { DRE, waitForTx } from '../helpers/misc-utils';
import {
  initReservesByHelper,
  enableReservesToBorrowByHelper,
  enableReservesAsCollateralByHelper,
} from '../helpers/init-helpers';
import AaveConfig from '../markets/aave';
import { ZERO_ADDRESS } from '../helpers/constants';
import {
  getLendingPool,
  getLendingPoolConfiguratorProxy,
  getPairsTokenAggregator,
} from '../helpers/contracts-getters';
import { WETH9Mocked } from '../types/WETH9Mocked';

const MOCK_USD_PRICE_IN_WEI = AaveConfig.ProtocolGlobalParams.MockUsdPriceInWei;
const ALL_ASSETS_INITIAL_PRICES = AaveConfig.Mocks.AllAssetsInitialPrices;
const USD_ADDRESS = AaveConfig.ProtocolGlobalParams.UsdAddress;
const MOCK_CHAINLINK_AGGREGATORS_PRICES = AaveConfig.Mocks.AllAssetsInitialPrices;
const LENDING_RATE_ORACLE_RATES_COMMON = AaveConfig.LendingRateOracleRatesCommon;

const deployAllMockTokens = async (deployer: Signer) => {
  const tokens: { [symbol: string]: MockContract | MintableERC20 | WETH9Mocked } = {};

  const protoConfigData = getReservesConfigByPool(AavePools.proto);

  for (const tokenSymbol of Object.keys(TokenContractId)) {
    if (tokenSymbol === 'WETH') {
      tokens[tokenSymbol] = await deployWETHMocked();
      await registerContractInJsonDb(tokenSymbol.toUpperCase(), tokens[tokenSymbol]);
      continue;
    }
    let decimals = 18;

    let configData = (<any>protoConfigData)[tokenSymbol];

    if (!configData) {
      decimals = 18;
    }

    tokens[tokenSymbol] = await deployMintableERC20([
      tokenSymbol,
      tokenSymbol,
      configData ? configData.reserveDecimals : 18,
    ]);
    await registerContractInJsonDb(tokenSymbol.toUpperCase(), tokens[tokenSymbol]);
  }

  return tokens;
};

const buildTestEnv = async (deployer: Signer, secondaryWallet: Signer) => {
  console.time('setup');
  const aaveAdmin = await deployer.getAddress();

  const mockTokens = await deployAllMockTokens(deployer);

  const addressesProvider = await deployLendingPoolAddressesProvider();
  await waitForTx(await addressesProvider.setPoolAdmin(aaveAdmin));

  //setting users[1] as emergency admin, which is in position 2 in the DRE addresses list
  const addressList = await Promise.all(
    (await DRE.ethers.getSigners()).map((signer) => signer.getAddress())
  );

  await waitForTx(await addressesProvider.setEmergencyAdmin(addressList[2]));

  const addressesProviderRegistry = await deployLendingPoolAddressesProviderRegistry();
  await waitForTx(
    await addressesProviderRegistry.registerAddressesProvider(addressesProvider.address, 1)
  );

  const lendingPoolImpl = await deployLendingPool();

  await waitForTx(await addressesProvider.setLendingPoolImpl(lendingPoolImpl.address));

  const lendingPoolAddress = await addressesProvider.getLendingPool();
  const lendingPoolProxy = await getLendingPool(lendingPoolAddress);

  await insertContractAddressInDb(eContractid.LendingPool, lendingPoolProxy.address);

  const lendingPoolConfiguratorImpl = await deployLendingPoolConfigurator();
  await waitForTx(
    await addressesProvider.setLendingPoolConfiguratorImpl(lendingPoolConfiguratorImpl.address)
  );
  const lendingPoolConfiguratorProxy = await getLendingPoolConfiguratorProxy(
    await addressesProvider.getLendingPoolConfigurator()
  );
  await insertContractAddressInDb(
    eContractid.LendingPoolConfigurator,
    lendingPoolConfiguratorProxy.address
  );

  // Deploy deployment helpers
  await deployStableAndVariableTokensHelper([lendingPoolProxy.address, addressesProvider.address]);
  await deployATokensAndRatesHelper([
    lendingPoolProxy.address,
    addressesProvider.address,
    lendingPoolConfiguratorProxy.address,
  ]);

  const fallbackOracle = await deployPriceOracle();
  await waitForTx(await fallbackOracle.setEthUsdPrice(MOCK_USD_PRICE_IN_WEI));
  await setInitialAssetPricesInOracle(
    ALL_ASSETS_INITIAL_PRICES,
    {
      WETH: mockTokens.WETH.address,
      DAI: mockTokens.DAI.address,
      TUSD: mockTokens.TUSD.address,
      USDC: mockTokens.USDC.address,
      USDT: mockTokens.USDT.address,
      SUSD: mockTokens.SUSD.address,
      AAVE: mockTokens.AAVE.address,
      BAT: mockTokens.BAT.address,
      MKR: mockTokens.MKR.address,
      LINK: mockTokens.LINK.address,
      KNC: mockTokens.KNC.address,
      WBTC: mockTokens.WBTC.address,
      MANA: mockTokens.MANA.address,
      ZRX: mockTokens.ZRX.address,
      SNX: mockTokens.SNX.address,
      BUSD: mockTokens.BUSD.address,
      YFI: mockTokens.BUSD.address,
      REN: mockTokens.REN.address,
      UNI: mockTokens.UNI.address,
      ENJ: mockTokens.ENJ.address,
      USD: USD_ADDRESS,
    },
    fallbackOracle
  );

  const mockAggregators = await deployAllMockAggregators(MOCK_CHAINLINK_AGGREGATORS_PRICES);

  const allTokenAddresses = Object.entries(mockTokens).reduce(
    (accum: { [tokenSymbol: string]: tEthereumAddress }, [tokenSymbol, tokenContract]) => ({
      ...accum,
      [tokenSymbol]: tokenContract.address,
    }),
    {}
  );
  const allAggregatorsAddresses = Object.entries(mockAggregators).reduce(
    (accum: { [tokenSymbol: string]: tEthereumAddress }, [tokenSymbol, aggregator]) => ({
      ...accum,
      [tokenSymbol]: aggregator.address,
    }),
    {}
  );

  const [tokens, aggregators] = getPairsTokenAggregator(allTokenAddresses, allAggregatorsAddresses);

  await deployAaveOracle([tokens, aggregators, fallbackOracle.address, mockTokens.WETH.address]);
  await waitForTx(await addressesProvider.setPriceOracle(fallbackOracle.address));

  const lendingRateOracle = await deployLendingRateOracle();
  await waitForTx(await addressesProvider.setLendingRateOracle(lendingRateOracle.address));

  const { USD, ...tokensAddressesWithoutUsd } = allTokenAddresses;
  const allReservesAddresses = {
    ...tokensAddressesWithoutUsd,
  };
  await setInitialMarketRatesInRatesOracleByHelper(
    LENDING_RATE_ORACLE_RATES_COMMON,
    allReservesAddresses,
    lendingRateOracle,
    aaveAdmin
  );

  const reservesParams = getReservesConfigByPool(AavePools.proto);

  const testHelpers = await deployAaveProtocolDataProvider(addressesProvider.address);

  await insertContractAddressInDb(eContractid.AaveProtocolDataProvider, testHelpers.address);
  const admin = await deployer.getAddress();

  console.log('Initialize configuration');
  await initReservesByHelper(reservesParams, allReservesAddresses, admin, ZERO_ADDRESS);
  await enableReservesToBorrowByHelper(reservesParams, allReservesAddresses, testHelpers, admin);
  await enableReservesAsCollateralByHelper(
    reservesParams,
    allReservesAddresses,
    testHelpers,
    admin
  );

  const collateralManager = await deployLendingPoolCollateralManager();
  await waitForTx(
    await addressesProvider.setLendingPoolCollateralManager(collateralManager.address)
  );

  const mockFlashLoanReceiver = await deployMockFlashLoanReceiver(addressesProvider.address);
  await insertContractAddressInDb(eContractid.MockFlashLoanReceiver, mockFlashLoanReceiver.address);

  await deployWalletBalancerProvider(addressesProvider.address);

  await deployWETHGateway([mockTokens.WETH.address, lendingPoolAddress]);

  console.timeEnd('setup');
};

before(async () => {
  await rawBRE.run('set-DRE');
  const [deployer, secondaryWallet] = await getEthersSigners();
  const MAINNET_FORK = process.env.MAINNET_FORK === 'true';

  if (MAINNET_FORK) {
    await rawBRE.run('aave:mainnet');
  } else {
    console.log('-> Deploying test environment...');
    await buildTestEnv(deployer, secondaryWallet);
  }

  await initializeMakeSuite();
  console.log('\n***************');
  console.log('Setup and snapshot finished');
  console.log('***************\n');
});