Contract 0xbca055f25c3670fe0b1463e8d470585fe15ca819 3

// SPDX-License-Identifier: UNLICENSED
/**
* By using this software, you understand, acknowledge and accept that Tetu
* and/or the underlying software are provided “as is” and “as available”
* basis and without warranties or representations of any kind either expressed
* or implied. Any use of this open source software released under the ISC
* Internet Systems Consortium license is done at your own risk to the fullest
* extent permissible pursuant to applicable law any and all liability as well
* as all warranties, including any fitness for a particular purpose with respect
* to Tetu and/or the underlying software and the use thereof are disclaimed.
*/

pragma solidity 0.8.4;

import "../openzeppelin/IERC20.sol";
import "./libraries/TransferHelper.sol";
import "./libraries/TetuSwapLibrary.sol";
import "./interfaces/ITetuSwapERC20.sol";
import "./interfaces/ITetuSwapPair.sol";
import "./interfaces/ITetuSwapRouter.sol";
import "./interfaces/ITetuSwapFactory.sol";
import "./interfaces/IWETH.sol";

/// @title UniswapV2Router02 https://github.com/Uniswap/v2-periphery/blob/master/contracts/libraries/UniswapV2Library.sol
/// @dev Few changes for compatability with Tetu Swap
contract TetuSwapRouter is ITetuSwapRouter {

  address public immutable override factory;
  address public immutable override WETH;
  string public constant VERSION = "1.1.1";

  event EthReceived(address sender);

  modifier ensure(uint deadline) {
    require(deadline >= block.timestamp, "TSR: EXPIRED");
    _;
  }

  constructor(address _factory, address _WETH) {
    require(_factory != address(0), "TSR: Zero factory");
    require(_WETH != address(0), "TSR: Zero WETH");
    factory = _factory;
    WETH = _WETH;
  }

  receive() external payable {
    require(msg.sender == WETH, "TSR: ETH sender is not WETH contract");
    // only accept ETH via fallback from the WETH contract
    emit EthReceived(msg.sender);
  }

  // **** ADD LIQUIDITY ****
  function _addLiquidity(
    address tokenA,
    address tokenB,
    uint amountADesired,
    uint amountBDesired,
    uint amountAMin,
    uint amountBMin
  ) internal virtual returns (uint amountA, uint amountB) {
    require(ITetuSwapFactory(factory).getPair(tokenA, tokenB) != address(0), "TSR: Pair not exist");
    (uint reserveA, uint reserveB) = TetuSwapLibrary.getReserves(factory, tokenA, tokenB);
    if (reserveA == 0 && reserveB == 0) {
      (amountA, amountB) = (amountADesired, amountBDesired);
    } else {
      uint amountBOptimal = TetuSwapLibrary.quote(amountADesired, reserveA, reserveB);
      if (amountBOptimal <= amountBDesired) {
        require(amountBOptimal >= amountBMin, "TSR: INSUFFICIENT_B_AMOUNT");
        (amountA, amountB) = (amountADesired, amountBOptimal);
      } else {
        uint amountAOptimal = TetuSwapLibrary.quote(amountBDesired, reserveB, reserveA);
        assert(amountAOptimal <= amountADesired);
        require(amountAOptimal >= amountAMin, "TSR: INSUFFICIENT_A_AMOUNT");
        (amountA, amountB) = (amountAOptimal, amountBDesired);
      }
    }
  }

  function addLiquidity(
    address tokenA,
    address tokenB,
    uint amountADesired,
    uint amountBDesired,
    uint amountAMin,
    uint amountBMin,
    address to,
    uint deadline
  ) external virtual override ensure(deadline) returns (uint amountA, uint amountB, uint liquidity) {
    (amountA, amountB) = _addLiquidity(tokenA, tokenB, amountADesired, amountBDesired, amountAMin, amountBMin);
    address pair = TetuSwapLibrary.pairFor(factory, tokenA, tokenB);
    TransferHelper.safeTransferFrom(tokenA, msg.sender, pair, amountA);
    TransferHelper.safeTransferFrom(tokenB, msg.sender, pair, amountB);
    liquidity = ITetuSwapPair(pair).mint(to);
  }

  function addLiquidityETH(
    address token,
    uint amountTokenDesired,
    uint amountTokenMin,
    uint amountETHMin,
    address to,
    uint deadline
  ) external virtual override payable ensure(deadline) returns (uint amountToken, uint amountETH, uint liquidity) {
    (amountToken, amountETH) = _addLiquidity(
      token,
      WETH,
      amountTokenDesired,
      msg.value,
      amountTokenMin,
      amountETHMin
    );
    address pair = TetuSwapLibrary.pairFor(factory, token, WETH);
    TransferHelper.safeTransferFrom(token, msg.sender, pair, amountToken);
    IWETH(WETH).deposit{value : amountETH}();
    assert(IWETH(WETH).transfer(pair, amountETH));
    liquidity = ITetuSwapPair(pair).mint(to);
    // refund dust eth, if any
    if (msg.value > amountETH) TransferHelper.safeTransferETH(msg.sender, msg.value - amountETH);
  }

  // **** REMOVE LIQUIDITY ****
  function removeLiquidity(
    address tokenA,
    address tokenB,
    uint liquidity,
    uint amountAMin,
    uint amountBMin,
    address to,
    uint deadline
  ) public virtual override ensure(deadline) returns (uint amountA, uint amountB) {
    address pair = TetuSwapLibrary.pairFor(factory, tokenA, tokenB);
    ITetuSwapERC20(pair).transferFrom(msg.sender, pair, liquidity);
    // send liquidity to pair
    (uint amount0, uint amount1) = ITetuSwapPair(pair).burn(to);
    (address token0,) = TetuSwapLibrary.sortTokens(tokenA, tokenB);
    (amountA, amountB) = tokenA == token0 ? (amount0, amount1) : (amount1, amount0);
    require(amountA >= amountAMin, "TSR: INSUFFICIENT_A_AMOUNT");
    require(amountB >= amountBMin, "TSR: INSUFFICIENT_B_AMOUNT");
  }

  function removeLiquidityETH(
    address token,
    uint liquidity,
    uint amountTokenMin,
    uint amountETHMin,
    address to,
    uint deadline
  ) public virtual override ensure(deadline) returns (uint amountToken, uint amountETH) {
    (amountToken, amountETH) = removeLiquidity(
      token,
      WETH,
      liquidity,
      amountTokenMin,
      amountETHMin,
      address(this),
      deadline
    );
    TransferHelper.safeTransfer(token, to, amountToken);
    IWETH(WETH).withdraw(amountETH);
    TransferHelper.safeTransferETH(to, amountETH);
  }

  function removeLiquidityWithPermit(
    address tokenA,
    address tokenB,
    uint liquidity,
    uint amountAMin,
    uint amountBMin,
    address to,
    uint deadline,
    bool approveMax, uint8 v, bytes32 r, bytes32 s
  ) external virtual override returns (uint amountA, uint amountB) {
    address pair = TetuSwapLibrary.pairFor(factory, tokenA, tokenB);
    uint value = approveMax ? type(uint).max : liquidity;
    ITetuSwapERC20(pair).permit(msg.sender, address(this), value, deadline, v, r, s);
    (amountA, amountB) = removeLiquidity(tokenA, tokenB, liquidity, amountAMin, amountBMin, to, deadline);
  }

  function removeLiquidityETHWithPermit(
    address token,
    uint liquidity,
    uint amountTokenMin,
    uint amountETHMin,
    address to,
    uint deadline,
    bool approveMax, uint8 v, bytes32 r, bytes32 s
  ) external virtual override returns (uint amountToken, uint amountETH) {
    address pair = TetuSwapLibrary.pairFor(factory, token, WETH);
    uint value = approveMax ? type(uint).max : liquidity;
    ITetuSwapERC20(pair).permit(msg.sender, address(this), value, deadline, v, r, s);
    (amountToken, amountETH) = removeLiquidityETH(token, liquidity, amountTokenMin, amountETHMin, to, deadline);
  }

  // **** REMOVE LIQUIDITY (supporting fee-on-transfer tokens) ****
  function removeLiquidityETHSupportingFeeOnTransferTokens(
    address token,
    uint liquidity,
    uint amountTokenMin,
    uint amountETHMin,
    address to,
    uint deadline
  ) public virtual override ensure(deadline) returns (uint amountETH) {
    (, amountETH) = removeLiquidity(
      token,
      WETH,
      liquidity,
      amountTokenMin,
      amountETHMin,
      address(this),
      deadline
    );
    TransferHelper.safeTransfer(token, to, IERC20(token).balanceOf(address(this)));
    IWETH(WETH).withdraw(amountETH);
    TransferHelper.safeTransferETH(to, amountETH);
  }

  function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
    address token,
    uint liquidity,
    uint amountTokenMin,
    uint amountETHMin,
    address to,
    uint deadline,
    bool approveMax, uint8 v, bytes32 r, bytes32 s
  ) external virtual override returns (uint amountETH) {
    address pair = TetuSwapLibrary.pairFor(factory, token, WETH);
    uint value = approveMax ? type(uint).max : liquidity;
    ITetuSwapERC20(pair).permit(msg.sender, address(this), value, deadline, v, r, s);
    amountETH = removeLiquidityETHSupportingFeeOnTransferTokens(
      token, liquidity, amountTokenMin, amountETHMin, to, deadline
    );
  }

  // **** SWAP ****
  // requires the initial amount to have already been sent to the first pair
  function _swap(uint[] memory amounts, address[] memory path, address _to) internal virtual {
    for (uint i; i < path.length - 1; i++) {
      (address input, address output) = (path[i], path[i + 1]);
      (address token0,) = TetuSwapLibrary.sortTokens(input, output);
      uint amountOut = amounts[i + 1];
      (uint amount0Out, uint amount1Out) = input == token0 ? (uint(0), amountOut) : (amountOut, uint(0));
      address to = i < path.length - 2 ? TetuSwapLibrary.pairFor(factory, output, path[i + 2]) : _to;
      ITetuSwapPair(TetuSwapLibrary.pairFor(factory, input, output)).swap(
        amount0Out, amount1Out, to, new bytes(0)
      );
    }
  }

  function swapExactTokensForTokens(
    uint amountIn,
    uint amountOutMin,
    address[] calldata path,
    address to,
    uint deadline
  ) external virtual override ensure(deadline) returns (uint[] memory amounts) {
    callSync(path);
    amounts = TetuSwapLibrary.getAmountsOut(factory, amountIn, path);
    require(amounts[amounts.length - 1] >= amountOutMin, "TSR: INSUFFICIENT_OUTPUT_AMOUNT");
    TransferHelper.safeTransferFrom(
      path[0], msg.sender, TetuSwapLibrary.pairFor(factory, path[0], path[1]), amounts[0]
    );
    _swap(amounts, path, to);
  }

  function swapTokensForExactTokens(
    uint amountOut,
    uint amountInMax,
    address[] calldata path,
    address to,
    uint deadline
  ) external virtual override ensure(deadline) returns (uint[] memory amounts) {
    callSync(path);
    amounts = TetuSwapLibrary.getAmountsIn(factory, amountOut, path);
    require(amounts[0] <= amountInMax, "TSR: EXCESSIVE_INPUT_AMOUNT");
    TransferHelper.safeTransferFrom(
      path[0], msg.sender, TetuSwapLibrary.pairFor(factory, path[0], path[1]), amounts[0]
    );
    _swap(amounts, path, to);
  }

  function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
  external
  virtual
  override
  payable
  ensure(deadline)
  returns (uint[] memory amounts)
  {
    require(path[0] == WETH, "TSR: INVALID_PATH");
    callSync(path);
    amounts = TetuSwapLibrary.getAmountsOut(factory, msg.value, path);
    require(amounts[amounts.length - 1] >= amountOutMin, "TSR: INSUFFICIENT_OUTPUT_AMOUNT");
    IWETH(WETH).deposit{value : amounts[0]}();
    assert(IWETH(WETH).transfer(TetuSwapLibrary.pairFor(factory, path[0], path[1]), amounts[0]));
    _swap(amounts, path, to);
  }

  function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
  external
  virtual
  override
  ensure(deadline)
  returns (uint[] memory amounts)
  {
    require(path[path.length - 1] == WETH, "TSR: INVALID_PATH");
    callSync(path);
    amounts = TetuSwapLibrary.getAmountsIn(factory, amountOut, path);
    require(amounts[0] <= amountInMax, "TSR: EXCESSIVE_INPUT_AMOUNT");
    TransferHelper.safeTransferFrom(
      path[0], msg.sender, TetuSwapLibrary.pairFor(factory, path[0], path[1]), amounts[0]
    );
    _swap(amounts, path, address(this));
    IWETH(WETH).withdraw(amounts[amounts.length - 1]);
    TransferHelper.safeTransferETH(to, amounts[amounts.length - 1]);
  }

  function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
  external
  virtual
  override
  ensure(deadline)
  returns (uint[] memory amounts)
  {
    require(path[path.length - 1] == WETH, "TSR: INVALID_PATH");
    callSync(path);
    amounts = TetuSwapLibrary.getAmountsOut(factory, amountIn, path);
    require(amounts[amounts.length - 1] >= amountOutMin, "TSR: INSUFFICIENT_OUTPUT_AMOUNT");
    TransferHelper.safeTransferFrom(
      path[0], msg.sender, TetuSwapLibrary.pairFor(factory, path[0], path[1]), amounts[0]
    );
    _swap(amounts, path, address(this));
    IWETH(WETH).withdraw(amounts[amounts.length - 1]);
    TransferHelper.safeTransferETH(to, amounts[amounts.length - 1]);
  }

  function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
  external
  virtual
  override
  payable
  ensure(deadline)
  returns (uint[] memory amounts)
  {
    require(path[0] == WETH, "TSR: INVALID_PATH");
    callSync(path);
    amounts = TetuSwapLibrary.getAmountsIn(factory, amountOut, path);
    require(amounts[0] <= msg.value, "TSR: EXCESSIVE_INPUT_AMOUNT");
    IWETH(WETH).deposit{value : amounts[0]}();
    assert(IWETH(WETH).transfer(TetuSwapLibrary.pairFor(factory, path[0], path[1]), amounts[0]));
    _swap(amounts, path, to);
    // refund dust eth, if any
    if (msg.value > amounts[0]) TransferHelper.safeTransferETH(msg.sender, msg.value - amounts[0]);
  }

  // **** SWAP (supporting fee-on-transfer tokens) ****
  // requires the initial amount to have already been sent to the first pair
  function _swapSupportingFeeOnTransferTokens(address[] memory path, address _to) internal virtual {
    for (uint i; i < path.length - 1; i++) {
      (address input, address output) = (path[i], path[i + 1]);
      (address token0,) = TetuSwapLibrary.sortTokens(input, output);
      ITetuSwapPair pair = ITetuSwapPair(TetuSwapLibrary.pairFor(factory, input, output));
      uint amountInput;
      uint amountOutput;
      {// scope to avoid stack too deep errors
        (uint reserve0, uint reserve1,) = pair.getReserves();
        (uint reserveInput, uint reserveOutput) = input == token0 ? (reserve0, reserve1) : (reserve1, reserve0);
        amountInput = pair.balanceOfVaultUnderlying(input) + IERC20(input).balanceOf(address(pair)) - reserveInput;
        amountOutput = TetuSwapLibrary.getAmountOut(
          amountInput,
          reserveInput,
          reserveOutput,
          pair.fee()
        );
      }
      (uint amount0Out, uint amount1Out) = input == token0 ? (uint(0), amountOutput) : (amountOutput, uint(0));
      address to = i < path.length - 2 ? TetuSwapLibrary.pairFor(factory, output, path[i + 2]) : _to;
      pair.swap(amount0Out, amount1Out, to, new bytes(0));
    }
  }

  function swapExactTokensForTokensSupportingFeeOnTransferTokens(
    uint amountIn,
    uint amountOutMin,
    address[] calldata path,
    address to,
    uint deadline
  ) external virtual override ensure(deadline) {
    callSync(path);
    TransferHelper.safeTransferFrom(
      path[0], msg.sender, TetuSwapLibrary.pairFor(factory, path[0], path[1]), amountIn
    );
    uint balanceBefore = IERC20(path[path.length - 1]).balanceOf(to);
    _swapSupportingFeeOnTransferTokens(path, to);
    require(
      IERC20(path[path.length - 1]).balanceOf(to) - balanceBefore >= amountOutMin,
      "TSR: INSUFFICIENT_OUTPUT_AMOUNT"
    );
  }

  function swapExactETHForTokensSupportingFeeOnTransferTokens(
    uint amountOutMin,
    address[] calldata path,
    address to,
    uint deadline
  )
  external
  virtual
  override
  payable
  ensure(deadline)
  {
    require(path[0] == WETH, "TSR: INVALID_PATH");
    callSync(path);
    uint amountIn = msg.value;
    IWETH(WETH).deposit{value : amountIn}();
    assert(IWETH(WETH).transfer(TetuSwapLibrary.pairFor(factory, path[0], path[1]), amountIn));
    uint balanceBefore = IERC20(path[path.length - 1]).balanceOf(to);
    _swapSupportingFeeOnTransferTokens(path, to);
    require(
      IERC20(path[path.length - 1]).balanceOf(to) - balanceBefore >= amountOutMin,
      "TSR: INSUFFICIENT_OUTPUT_AMOUNT"
    );
  }

  function swapExactTokensForETHSupportingFeeOnTransferTokens(
    uint amountIn,
    uint amountOutMin,
    address[] calldata path,
    address to,
    uint deadline
  )
  external
  virtual
  override
  ensure(deadline)
  {
    require(path[path.length - 1] == WETH, "TSR: INVALID_PATH");
    callSync(path);
    TransferHelper.safeTransferFrom(
      path[0], msg.sender, TetuSwapLibrary.pairFor(factory, path[0], path[1]), amountIn
    );
    _swapSupportingFeeOnTransferTokens(path, address(this));
    uint amountOut = IERC20(WETH).balanceOf(address(this));
    require(amountOut >= amountOutMin, "TSR: INSUFFICIENT_OUTPUT_AMOUNT");
    IWETH(WETH).withdraw(amountOut);
    TransferHelper.safeTransferETH(to, amountOut);
  }

  function callSync(address[] memory path) private {
    require(path.length >= 2, "TSR: INVALID_PATH");
    for (uint i; i < path.length - 1; i++) {
      ITetuSwapPair(TetuSwapLibrary.pairFor(factory, path[i], path[i + 1])).sync();
    }
  }

  // **** LIBRARY FUNCTIONS ****
  function quote(uint amountA, uint reserveA, uint reserveB) public pure virtual override returns (uint amountB) {
    return TetuSwapLibrary.quote(amountA, reserveA, reserveB);
  }

  function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut, uint fee)
  public
  pure
  virtual
  override
  returns (uint amountOut)
  {
    return TetuSwapLibrary.getAmountOut(amountIn, reserveIn, reserveOut, fee);
  }

  function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut, uint fee)
  public
  pure
  virtual
  override
  returns (uint amountIn)
  {
    return TetuSwapLibrary.getAmountIn(amountOut, reserveIn, reserveOut, fee);
  }

  function getAmountsOut(uint amountIn, address[] memory path)
  public
  view
  virtual
  override
  returns (uint[] memory amounts)
  {
    return TetuSwapLibrary.getAmountsOut(factory, amountIn, path);
  }

  function getAmountsIn(uint amountOut, address[] memory path)
  public
  view
  virtual
  override
  returns (uint[] memory amounts)
  {
    return TetuSwapLibrary.getAmountsIn(factory, amountOut, path);
  }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
  /**
   * @dev Returns the amount of tokens in existence.
   */
  function totalSupply() external view returns (uint256);

  /**
   * @dev Returns the amount of tokens owned by `account`.
   */
  function balanceOf(address account) external view returns (uint256);

  /**
   * @dev Moves `amount` tokens from the caller's account to `recipient`.
   *
   * Returns a boolean value indicating whether the operation succeeded.
   *
   * Emits a {Transfer} event.
   */
  function transfer(address recipient, uint256 amount) external returns (bool);

  /**
   * @dev Returns the remaining number of tokens that `spender` will be
   * allowed to spend on behalf of `owner` through {transferFrom}. This is
   * zero by default.
   *
   * This value changes when {approve} or {transferFrom} are called.
   */
  function allowance(address owner, address spender) external view returns (uint256);

  /**
   * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
   *
   * Returns a boolean value indicating whether the operation succeeded.
   *
   * IMPORTANT: Beware that changing an allowance with this method brings the risk
   * that someone may use both the old and the new allowance by unfortunate
   * transaction ordering. One possible solution to mitigate this race
   * condition is to first reduce the spender's allowance to 0 and set the
   * desired value afterwards:
   * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
   *
   * Emits an {Approval} event.
   */
  function approve(address spender, uint256 amount) external returns (bool);

  /**
   * @dev Moves `amount` tokens from `sender` to `recipient` using the
   * allowance mechanism. `amount` is then deducted from the caller's
   * allowance.
   *
   * Returns a boolean value indicating whether the operation succeeded.
   *
   * Emits a {Transfer} event.
   */
  function transferFrom(
    address sender,
    address recipient,
    uint256 amount
  ) external returns (bool);

  /**
   * @dev Emitted when `value` tokens are moved from one account (`from`) to
   * another (`to`).
   *
   * Note that `value` may be zero.
   */
  event Transfer(address indexed from, address indexed to, uint256 value);

  /**
   * @dev Emitted when the allowance of a `spender` for an `owner` is set by
   * a call to {approve}. `value` is the new allowance.
   */
  event Approval(address indexed owner, address indexed spender, uint256 value);
}

// SPDX-License-Identifier: GPL-3.0-or-later

pragma solidity 0.8.4;

/// @title helper methods for interacting with ERC20 tokens and sending ETH that do not consistently return true/false
library TransferHelper {

  function safeApprove(
    address token,
    address to,
    uint256 value
  ) internal {
    // bytes4(keccak256(bytes('approve(address,uint256)')));
    (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x095ea7b3, to, value));
    require(
      success && (data.length == 0 || abi.decode(data, (bool))),
      "TransferHelper::safeApprove: approve failed"
    );
  }

  function safeTransfer(
    address token,
    address to,
    uint256 value
  ) internal {
    // bytes4(keccak256(bytes('transfer(address,uint256)')));
    (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0xa9059cbb, to, value));
    require(
      success && (data.length == 0 || abi.decode(data, (bool))),
      "TransferHelper::safeTransfer: transfer failed"
    );
  }

  function safeTransferFrom(
    address token,
    address from,
    address to,
    uint256 value
  ) internal {
    // bytes4(keccak256(bytes('transferFrom(address,address,uint256)')));
    (bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x23b872dd, from, to, value));
    require(
      success && (data.length == 0 || abi.decode(data, (bool))),
      "TransferHelper::transferFrom: transferFrom failed"
    );
  }

  function safeTransferETH(address to, uint256 value) internal {
    (bool success,) = to.call{value : value}(new bytes(0));
    require(success, "TransferHelper::safeTransferETH: ETH transfer failed");
  }
}

// SPDX-License-Identifier: ISC
/**
* By using this software, you understand, acknowledge and accept that Tetu
* and/or the underlying software are provided “as is” and “as available”
* basis and without warranties or representations of any kind either expressed
* or implied. Any use of this open source software released under the ISC
* Internet Systems Consortium license is done at your own risk to the fullest
* extent permissible pursuant to applicable law any and all liability as well
* as all warranties, including any fitness for a particular purpose with respect
* to Tetu and/or the underlying software and the use thereof are disclaimed.
*/

pragma solidity 0.8.4;

import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "../interfaces/ITetuSwapPair.sol";
import "../interfaces/ITetuSwapFactory.sol";

/// @title UniswapV2Library https://github.com/Uniswap/v2-periphery/blob/master/contracts/libraries/UniswapV2Library.sol
library TetuSwapLibrary {
  using SafeMath for uint;

  uint constant private _PRECISION = 10000;
  uint constant private _FEE = 2;

  /// @dev returns sorted token addresses, used to handle return values from pairs sorted in this order
  function sortTokens(address tokenA, address tokenB) internal pure returns (address token0, address token1) {
    require(tokenA != tokenB, "TSL: IDENTICAL_ADDRESSES");
    (token0, token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
    require(token0 != address(0), "TSL: ZERO_ADDRESS");
  }

  /// @dev use stored in factory pairs instead on the flay calculation
  ///      we have more flexible system and can't use old function
  function pairFor(address factory, address tokenA, address tokenB) internal view returns (address pair) {
    return ITetuSwapFactory(factory).getPair(tokenA, tokenB);
  }

  /// @dev fetches and sorts the reserves for a pair
  function getReserves(address factory, address tokenA, address tokenB) internal view returns (uint reserveA, uint reserveB) {
    (address token0,) = sortTokens(tokenA, tokenB);
    (uint reserve0, uint reserve1,) = ITetuSwapPair(pairFor(factory, tokenA, tokenB)).getReserves();
    (reserveA, reserveB) = tokenA == token0 ? (reserve0, reserve1) : (reserve1, reserve0);
  }

  /// @dev given some amount of an asset and pair reserves, returns an equivalent amount of the other asset
  function quote(uint amountA, uint reserveA, uint reserveB) internal pure returns (uint amountB) {
    require(amountA > 0, "TSL: INSUFFICIENT_AMOUNT");
    require(reserveA > 0 && reserveB > 0, "TSL: INSUFFICIENT_LIQUIDITY");
    amountB = amountA.mul(reserveB) / reserveA;
  }

  /// @dev given an input amount of an asset and pair reserves, returns the maximum output amount of the other asset
  function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut, uint fee) internal pure returns (uint amountOut) {
    require(amountIn > 0, "TSL: INSUFFICIENT_INPUT_AMOUNT");
    require(reserveIn > 0 && reserveOut > 0, "TSL: INSUFFICIENT_LIQUIDITY");
    uint amountInWithFee = amountIn.mul(_PRECISION - fee);
    uint numerator = amountInWithFee.mul(reserveOut);
    uint denominator = reserveIn.mul(_PRECISION).add(amountInWithFee);
    amountOut = numerator / denominator;
  }

  /// @dev given an output amount of an asset and pair reserves, returns a required input amount of the other asset
  function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut, uint fee) internal pure returns (uint amountIn) {
    require(amountOut > 0, "TSL: INSUFFICIENT_OUTPUT_AMOUNT");
    require(reserveIn > 0 && reserveOut > 0, "TSL: INSUFFICIENT_LIQUIDITY");
    uint numerator = reserveIn.mul(amountOut).mul(_PRECISION);
    uint denominator = reserveOut.sub(amountOut).mul(_PRECISION - fee);
    amountIn = (numerator / denominator).add(1);
  }

  /// @dev performs chained getAmountOut calculations on any number of pairs
  function getAmountsOut(address factory, uint amountIn, address[] memory path) internal view returns (uint[] memory amounts) {
    require(path.length >= 2, "TSL: INVALID_PATH");
    amounts = new uint[](path.length);
    amounts[0] = amountIn;
    for (uint i; i < path.length - 1; i++) {
      (uint reserveIn, uint reserveOut) = getReserves(factory, path[i], path[i + 1]);
      amounts[i + 1] = getAmountOut(
        amounts[i],
        reserveIn,
        reserveOut,
        ITetuSwapPair(pairFor(factory, path[i], path[i + 1])).fee()
      );
    }
  }

  /// @dev performs chained getAmountIn calculations on any number of pairs
  function getAmountsIn(address factory, uint amountOut, address[] memory path) internal view returns (uint[] memory amounts) {
    require(path.length >= 2, "TSL: INVALID_PATH");
    amounts = new uint[](path.length);
    amounts[amounts.length - 1] = amountOut;
    for (uint i = path.length - 1; i > 0; i--) {
      (uint reserveIn, uint reserveOut) = getReserves(factory, path[i - 1], path[i]);
      amounts[i - 1] = getAmountIn(
        amounts[i],
        reserveIn,
        reserveOut,
        ITetuSwapPair(pairFor(factory, path[i - 1], path[i])).fee()
      );
    }
  }
}

// SPDX-License-Identifier: ISC
/**
* By using this software, you understand, acknowledge and accept that Tetu
* and/or the underlying software are provided “as is” and “as available”
* basis and without warranties or representations of any kind either expressed
* or implied. Any use of this open source software released under the ISC
* Internet Systems Consortium license is done at your own risk to the fullest
* extent permissible pursuant to applicable law any and all liability as well
* as all warranties, including any fitness for a particular purpose with respect
* to Tetu and/or the underlying software and the use thereof are disclaimed.
*/

pragma solidity 0.8.4;

interface ITetuSwapERC20 {

  function name() external pure returns (string memory);

  function symbol() external pure returns (string memory);

  function decimals() external pure returns (uint8);

  function totalSupply() external view returns (uint);

  function balanceOf(address owner) external view returns (uint);

  function allowance(address owner, address spender) external view returns (uint);

  function approve(address spender, uint value) external returns (bool);

  function transfer(address to, uint value) external returns (bool);

  function transferFrom(address from, address to, uint value) external returns (bool);

  function DOMAIN_SEPARATOR() external view returns (bytes32);

  function PERMIT_TYPEHASH() external pure returns (bytes32);

  function nonces(address owner) external view returns (uint);

  function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
}

// SPDX-License-Identifier: ISC
/**
* By using this software, you understand, acknowledge and accept that Tetu
* and/or the underlying software are provided “as is” and “as available”
* basis and without warranties or representations of any kind either expressed
* or implied. Any use of this open source software released under the ISC
* Internet Systems Consortium license is done at your own risk to the fullest
* extent permissible pursuant to applicable law any and all liability as well
* as all warranties, including any fitness for a particular purpose with respect
* to Tetu and/or the underlying software and the use thereof are disclaimed.
*/

pragma solidity 0.8.4;

interface ITetuSwapPair {

  function balanceOfVaultUnderlying(address _token) external view returns (uint);

  function setFee(uint _fee) external;

  function setVaults(address _vault0, address _vault1) external;

  function setRewardRecipient(address _recipient) external;

  function claimAll() external;

  function MINIMUM_LIQUIDITY() external pure returns (uint);

  function factory() external view returns (address);

  function rewardRecipient() external view returns (address);

  function fee() external view returns (uint);

  function token0() external view returns (address);

  function token1() external view returns (address);

  function vault0() external view returns (address);

  function vault1() external view returns (address);

  function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);

  function price0CumulativeLast() external view returns (uint);

  function price1CumulativeLast() external view returns (uint);

  function mint(address to) external returns (uint liquidity);

  function burn(address to) external returns (uint amount0, uint amount1);

  function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;

  function sync() external;

  function initialize(
    address _token0,
    address _token1,
    uint _fee
  ) external;

}

// SPDX-License-Identifier: ISC
/**
* By using this software, you understand, acknowledge and accept that Tetu
* and/or the underlying software are provided “as is” and “as available”
* basis and without warranties or representations of any kind either expressed
* or implied. Any use of this open source software released under the ISC
* Internet Systems Consortium license is done at your own risk to the fullest
* extent permissible pursuant to applicable law any and all liability as well
* as all warranties, including any fitness for a particular purpose with respect
* to Tetu and/or the underlying software and the use thereof are disclaimed.
*/

pragma solidity 0.8.4;

interface ITetuSwapRouter {

  function factory() external view returns (address);

  function WETH() external view returns (address);

  function addLiquidity(
    address tokenA,
    address tokenB,
    uint amountADesired,
    uint amountBDesired,
    uint amountAMin,
    uint amountBMin,
    address to,
    uint deadline
  ) external returns (uint amountA, uint amountB, uint liquidity);

  function addLiquidityETH(
    address token,
    uint amountTokenDesired,
    uint amountTokenMin,
    uint amountETHMin,
    address to,
    uint deadline
  ) external payable returns (uint amountToken, uint amountETH, uint liquidity);

  function removeLiquidity(
    address tokenA,
    address tokenB,
    uint liquidity,
    uint amountAMin,
    uint amountBMin,
    address to,
    uint deadline
  ) external returns (uint amountA, uint amountB);

  function removeLiquidityETH(
    address token,
    uint liquidity,
    uint amountTokenMin,
    uint amountETHMin,
    address to,
    uint deadline
  ) external returns (uint amountToken, uint amountETH);

  function removeLiquidityWithPermit(
    address tokenA,
    address tokenB,
    uint liquidity,
    uint amountAMin,
    uint amountBMin,
    address to,
    uint deadline,
    bool approveMax, uint8 v, bytes32 r, bytes32 s
  ) external returns (uint amountA, uint amountB);

  function removeLiquidityETHWithPermit(
    address token,
    uint liquidity,
    uint amountTokenMin,
    uint amountETHMin,
    address to,
    uint deadline,
    bool approveMax, uint8 v, bytes32 r, bytes32 s
  ) external returns (uint amountToken, uint amountETH);

  function swapExactTokensForTokens(
    uint amountIn,
    uint amountOutMin,
    address[] calldata path,
    address to,
    uint deadline
  ) external returns (uint[] memory amounts);

  function swapTokensForExactTokens(
    uint amountOut,
    uint amountInMax,
    address[] calldata path,
    address to,
    uint deadline
  ) external returns (uint[] memory amounts);

  function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
  external
  payable
  returns (uint[] memory amounts);

  function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
  external
  returns (uint[] memory amounts);

  function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
  external
  returns (uint[] memory amounts);

  function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
  external
  payable
  returns (uint[] memory amounts);

  function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);

  function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut, uint fee) external pure returns (uint amountOut);

  function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut, uint fee) external pure returns (uint amountIn);

  function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);

  function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);

  function removeLiquidityETHSupportingFeeOnTransferTokens(
    address token,
    uint liquidity,
    uint amountTokenMin,
    uint amountETHMin,
    address to,
    uint deadline
  ) external returns (uint amountETH);

  function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
    address token,
    uint liquidity,
    uint amountTokenMin,
    uint amountETHMin,
    address to,
    uint deadline,
    bool approveMax, uint8 v, bytes32 r, bytes32 s
  ) external returns (uint amountETH);

  function swapExactTokensForTokensSupportingFeeOnTransferTokens(
    uint amountIn,
    uint amountOutMin,
    address[] calldata path,
    address to,
    uint deadline
  ) external;

  function swapExactETHForTokensSupportingFeeOnTransferTokens(
    uint amountOutMin,
    address[] calldata path,
    address to,
    uint deadline
  ) external payable;

  function swapExactTokensForETHSupportingFeeOnTransferTokens(
    uint amountIn,
    uint amountOutMin,
    address[] calldata path,
    address to,
    uint deadline
  ) external;

}

// SPDX-License-Identifier: ISC
/**
* By using this software, you understand, acknowledge and accept that Tetu
* and/or the underlying software are provided “as is” and “as available”
* basis and without warranties or representations of any kind either expressed
* or implied. Any use of this open source software released under the ISC
* Internet Systems Consortium license is done at your own risk to the fullest
* extent permissible pursuant to applicable law any and all liability as well
* as all warranties, including any fitness for a particular purpose with respect
* to Tetu and/or the underlying software and the use thereof are disclaimed.
*/

pragma solidity 0.8.4;

interface ITetuSwapFactory {

  function getPair(address tokenA, address tokenB) external view returns (address pair);

  function allPairs(uint) external view returns (address pair);

  function allPairsLength() external view returns (uint);

  function createPair(address tokenA, address tokenB) external returns (address pair);

  function validPairs(address _pair) external view returns (bool);

}

// SPDX-License-Identifier: UNLICENSED
pragma solidity 0.8.4;

interface IWETH {
  function deposit() external payable;

  function transfer(address to, uint value) external returns (bool);

  function withdraw(uint) external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.

/**
 * @dev Wrappers over Solidity's arithmetic operations.
 *
 * NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler
 * now has built in overflow checking.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
            // benefit is lost if 'b' is also tested.
            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        return a + b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        return a * b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator.
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 150
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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oken","type":"uint256"},{"internalType":"uint256","name":"amountETH","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"liquidity","type":"uint256"},{"internalType":"uint256","name":"amountTokenMin","type":"uint256"},{"internalType":"uint256","name":"amountETHMin","type":"uint256"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"deadline","type":"uint256"}],"name":"removeLiquidityETHSupportingFeeOnTransferTokens","outputs":[{"internalType":"uint256","name":"amountETH","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"liquidity","type":"uint256"},{"internalType":"uint256","name":"amountTokenMin","type":"uint256"},{"internalType":"uint256","name":"amountETHMin","type":"uint256"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"bool","name":"approveMax","type":"bool"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"removeLiquidityETHWithPermit","outputs":[{"internalType":"uint256","name":"amountToken","type":"uint256"},{"internalType":"uint256","name":"amountETH","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"liquidity","type":"uint256"},{"internalType":"uint256","name":"amountTokenMin","type":"uint256"},{"internalType":"uint256","name":"amountETHMin","type":"uint256"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"bool","name":"approveMax","type":"bool"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"removeLiquidityETHWithPermitSupportingFeeOnTransferTokens","outputs":[{"internalType":"uint256","name":"amountETH","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"tokenA","type":"address"},{"internalType":"address","name":"tokenB","type":"address"},{"internalType":"uint256","name":"liquidity","type":"uint256"},{"internalType":"uint256","name":"amountAMin","type":"uint256"},{"internalType":"uint256","name":"amountBMin","type":"uint256"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"bool","name":"approveMax","type":"bool"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"removeLiquidityWithPermit","outputs":[{"internalType":"uint256","name":"amountA","type":"uint256"},{"internalType":"uint256","name":"amountB","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"},{"internalType":"address[]","name":"path","type":"address[]"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"deadline","type":"uint256"}],"name":"swapETHForExactTokens","outputs":[{"internalType":"uint256[]","name":"amounts","type":"uint256[]"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountOutMin","type":"uint256"},{"internalType":"address[]","name":"path","type":"address[]"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"deadline","type":"uint256"}],"name":"swapExactETHForTokens","outputs":[{"internalType":"uint256[]","name":"amounts","type":"uint256[]"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountOutMin","type":"uint256"},{"internalType":"address[]","name":"path","type":"address[]"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"deadline","type":"uint256"}],"name":"swapExactETHForTokensSupportingFeeOnTransferTokens","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"amountOutMin","type":"uint256"},{"internalType":"address[]","name":"path","type":"address[]"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"deadline","type":"uint256"}],"name":"swapExactTokensForETH","outputs":[{"internalType":"uint256[]","name":"amounts","type":"uint256[]"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"amountOutMin","type":"uint256"},{"internalType":"address[]","name":"path","type":"address[]"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"deadline","type":"uint256"}],"name":"swapExactTokensForETHSupportingFeeOnTransferTokens","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"amountOutMin","type":"uint256"},{"internalType":"address[]","name":"path","type":"address[]"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"deadline","type":"uint256"}],"name":"swapExactTokensForTokens","outputs":[{"internalType":"uint256[]","name":"amounts","type":"uint256[]"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountIn","type":"uint256"},{"internalType":"uint256","name":"amountOutMin","type":"uint256"},{"internalType":"address[]","name":"path","type":"address[]"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"deadline","type":"uint256"}],"name":"swapExactTokensForTokensSupportingFeeOnTransferTokens","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"},{"internalType":"uint256","name":"amountInMax","type":"uint256"},{"internalType":"address[]","name":"path","type":"address[]"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"deadline","type":"uint256"}],"name":"swapTokensForExactETH","outputs":[{"internalType":"uint256[]","name":"amounts","type":"uint256[]"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amountOut","type":"uint256"},{"internalType":"uint256","name":"amountInMax","type":"uint256"},{"internalType":"address[]","name":"path","type":"address[]"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"deadline","type":"uint256"}],"name":"swapTokensForExactTokens","outputs":[{"internalType":"uint256[]","name":"amounts","type":"uint256[]"}],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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000000000000000000000000684d8c187be836171a1af8d533e47248930318280000000000000000000000000d500b1d8e8ef31e21c99d1db9a6444d3adf1270

-----Decoded View---------------
Arg [0] : _factory (address): 0x684d8c187be836171a1af8d533e4724893031828
Arg [1] : _WETH (address): 0x0d500b1d8e8ef31e21c99d1db9a6444d3adf1270

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000684d8c187be836171a1af8d533e4724893031828
Arg [1] : 0000000000000000000000000d500b1d8e8ef31e21c99d1db9a6444d3adf1270