FOX

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;
/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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
    );

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


}

interface IERCN20 {
    function initialize(string memory name, string memory symbol,uint256 supply,address debitPool) external;
}
// File: @openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol

// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

interface INewERC {

    // Events
    /**
     * @dev Event emitted when a message is sent.
     * @param sender The sender will add account into pair.
      * @param account The address of the account will be added into pair or not.
     * @param flag  The flag whether the account address will be added into the pair or not.
     */
    event AddPair(address sender,address account, bool flag);

    /**
     * @dev Event emitted when a message is sent.
     * @param sender The sender will add account into router.
      * @param account The address of the account will be added into router or not.
     * @param flag  The flag whether the account address will be added into the router or not.
     */
    event AddRouter(address sender,address account, bool flag);

    // Functions


    /**
     * @dev Function to set the account for linear Release.
     * @param _pair The address of the uniswap pair which will be released linearly.
     * @param flag  The flag whether the pair address will be released linearly.
     */
    function addPair(address _pair,bool flag) external;

    /**
     * @dev Function to set the uniswap Router address which will receive token without vesting.
     * @param _router The address of the uniswap router.
     * @param flag  The flag whether the router address will be added to the swap router.
     */
    function addRouter(address _router,bool flag)  external;

   // function initialize(string memory name, string memory symbol,uint256 supply,address debitPool) external;

}
interface IUniswapV2Factory {
    event PairCreated(
        address indexed token0,
        address indexed token1,
        address pair,
        uint256
    );

    function owner() external view returns (address);

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

    function allPairs(uint256) external view returns (address pair);

    function allPairsLength() external view returns (uint256);

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

interface IUniswapV2Router01 {
    function factory() external pure returns (address);

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

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;

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


interface IUniswapV2Router is IUniswapV2Router01 {
    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;

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

interface IWETH {
    function balanceOf(address account) external view returns (uint256);
    function deposit() external payable;
    function transfer(address to, uint256 value) external returns (bool);
    function withdraw(uint256) external;
}

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(_owner == _msgSender(), 'Ownable: caller is not the owner');
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public onlyOwner {
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     */
    function _transferOwnership(address newOwner) internal {
        require(newOwner != address(0), 'Ownable: new owner is the zero address');
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

interface IDebitPool{
    function addNewDebit(address sender,address newToken,uint256 debitLevel,bool isLiqWar) payable external returns(address pair);
}

interface IV3SwapRouter {
//    struct ExactInputSingleParams {
//        address tokenIn;
//        address tokenOut;
//        uint24 fee;
//        address recipient;
//        uint256 amountIn;
//        uint256 amountOutMinimum;
//        uint160 sqrtPriceLimitX96;
//    }

    //ETH
        struct ExactInputSingleParams {
            address tokenIn;
            address tokenOut;
            uint24 fee;
            address recipient;
            uint256 deadline;
            uint256 amountIn;
            uint256 amountOutMinimum;
            uint160 sqrtPriceLimitX96;
        }

    /// @notice Swaps `amountIn` of one token for as much as possible of another token
    /// @param params The parameters necessary for the swap, encoded as `ExactInputSingleParams` in calldata
    /// @return amountOut The amount of the received token
    function exactInputSingle(ExactInputSingleParams calldata params)
    external
    payable
    returns (uint256 amountOut);

}

contract METHTestToken is IERC20, IERC20Metadata,Context {
    mapping(address => uint256) private  _balances;
    bytes32 internal constant V2POOL_INIT_CODE_HASH = 0x96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f; //base eth

    //    bytes32 internal constant V3POOL_INIT_CODE_HASH = 0xe34f199b19b2b4f47f68442619d555527d244f78a3297ea89325f843f87b8b54;
    //    address public constant v3Factory = 0x33128a8fC17869897dcE68Ed026d694621f6FDfD;

    address public constant universalRouter = 0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD; //base eth 0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD
    //address public constant ngPositionRouter = 0x03a520b32C04BF3bEEf7BEb72E919cf822Ed34f1;  //NonfungiblePositionManager Base

    mapping(address => mapping(address => uint256)) private _allowances;


    uint256 public  feeRation = 20;
    uint256 public constant basePoint = 1000;

    //address public constant DEAD = 0x000000000000000000000000000000000000dEaD;
    address public constant LuckToken = 0x66b5228CfD34d9f4d9f03188d67816286C7c0b74;
    //IV3SwapRouter public constant v3SwapRouter = IV3SwapRouter(0x2626664c2603336E57B271c5C0b26F421741e481);  //base
    IV3SwapRouter public v3SwapRouter = IV3SwapRouter(0xE592427A0AEce92De3Edee1F18E0157C05861564);  //ETH
    mapping(address => bool) internal  _pairs;
    mapping(address => bool) internal  _routers;

    address public createFactory;
    uint256 private _totalSupply;
    string private _name;
    string private _symbol;

    address public rewardAddr;

    mapping(address => bool) internal  _devList;

    IWETH public WETH;
    //IUniswapV2Factory public  v2Factory = IUniswapV2Factory(0x8909Dc15e40173Ff4699343b6eB8132c65e18eC6); //Base
    //IUniswapV2Router public  v2Router = IUniswapV2Router(0x4752ba5DBc23f44D87826276BF6Fd6b1C372aD24); //Base
    IUniswapV2Factory public  v2Factory = IUniswapV2Factory(0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f); //ETH;
    IUniswapV2Router public  v2Router = IUniswapV2Router(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); //ETH;

    uint256 public exchangeDuration;
    uint256 public startTradeTm;
    uint256 public tradeCnt;

    event Trade(address from,address to,uint256 side,uint256 amount,uint256 fee);
    event MemBuyLuckToken(address user,uint256 deadLuckToken,uint256 rewardLuckToken);

    bool public inSwap;
    modifier swapping() {
        inSwap = true;
        _;
        inSwap = false;
    }
    // called once by the factory at time of deployment
    constructor(string memory name_, string memory symbol_, uint256 totalSupply_, address user_,address[] memory _addresses) {
        _name = name_;
        _symbol = symbol_;
        _totalSupply = totalSupply_ * (10 ** decimals());
        _balances[user_] = _totalSupply;
        exchangeDuration = 5 * 3600;
        WETH = IWETH(v2Router.WETH());
        emit Transfer(address(0),user_, _totalSupply);
        //add UniV2 into pairs
        addV2Pair();
        addRouter(address(v2Router),true);
        addPair(universalRouter,true);
        addRouter(universalRouter,true);
        rewardAddr = user_;
        _devList[user_] = true;
        addDevLists(_addresses,true);

    }
    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless this function is
     * overridden;
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(
        address owner,
        address spender
    ) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(
        address spender,
        uint256 amount
    ) public virtual override returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(
        address spender,
        uint256 addedValue
    ) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(
        address spender,
        uint256 subtractedValue
    ) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(
            currentAllowance >= subtractedValue,
            "ERC20: decreased allowance below zero"
        );
    unchecked {
        _approve(owner, spender, currentAllowance - subtractedValue);
    }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     */
    function _transfer(address from, address to, uint256 amount) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(from, to, amount);
        _handleTokenTransfer(from, to, amount);
        _afterTokenTransfer(from, to, amount);
    }



    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `amount`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    function _spendAllowance(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(
                currentAllowance >= amount,
                "ERC20: insufficient allowance"
            );
        unchecked {
            _approve(owner, spender, currentAllowance - amount);
        }
        }
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {

    }

    function _handleTokenTransfer(address from, address to, uint256 amount) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
           _balances[from] = fromBalance - amount;
        }
        if (inSwap) {
            _balances[to] += amount;
            emit Transfer(from, to, amount);
            return;
        }
        uint256 currBal = balanceOf(address(this));
        if(currBal > 0 && !isPair(from) && tradeCnt >= 10){
            uint256 ethAmount = swapEth(currBal,address(this));
            //buy LuckToken
            swapExactInputSingleHop(address(WETH),LuckToken,10000,ethAmount);
            tradeCnt = 0;
        }
        if(isPair(to) && !isRouter(to) && startTradeTm == 0 ){
            startTradeTm = block.timestamp;
        }

       uint256 diffTime = 0;
       if(startTradeTm != 0){
          diffTime = block.timestamp - startTradeTm;
      }
     if(diffTime <= 45 seconds){
        if((isPair(from) && !isDev(to)) ||(isPair(to) && !isDev(from))){
           return;
        }
     }

        bool tradeFeeFlag = true;
        if(block.timestamp - startTradeTm > exchangeDuration){
            tradeFeeFlag = false;
        }

        if(tradeFeeFlag && isPair(from) && !isRouter(to) && !isPair(to)){ //BUY
            uint256 feeAmount = amount * feeRation / basePoint;
            _balances[address(this)] += feeAmount;
            _balances[to] += (amount - feeAmount);
            tradeCnt = tradeCnt + 1;

            emit Transfer(from, to, amount - feeAmount);
            emit Transfer(from, address(this), feeAmount);
            if(from == universalRouter && tradeCnt >= 10){
                uint256 ethAmount = swapEth(balanceOf(address(this)),address(this));
                //buy LuckToken
                swapExactInputSingleHop(address(WETH),LuckToken,10000,ethAmount);
                tradeCnt = 0;
            }

        }else if(tradeFeeFlag && isPair(to) && !isRouter(to) && balanceOf(to) > 0){ //sell
            _balances[to] += amount;
            emit Transfer(from, to, amount);
        }else{
            // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
            // decrementing then incrementing.
            _balances[to] += amount;
            emit Transfer(from, to, amount);
        }
    }

    function swapExactInputSingleHop(address tokenIn, address tokenOut, uint24 poolFee, uint256 amountIn) internal {
        IV3SwapRouter.ExactInputSingleParams memory params = IV3SwapRouter.ExactInputSingleParams({
        tokenIn: tokenIn,
        tokenOut: tokenOut,
        fee: poolFee,
        recipient: address(this),
        deadline: block.timestamp,
        amountIn: amountIn,
        amountOutMinimum: 0,
        sqrtPriceLimitX96: 0
        });

        uint256 amountOut = v3SwapRouter.exactInputSingle{value: amountIn}(params);

        //IERC20(LuckToken).transfer(DEAD,amountOut/2);
        IERC20(LuckToken).transfer(rewardAddr,amountOut);

        emit MemBuyLuckToken(tx.origin,amountOut,amountOut);
    }

    function addPair(address _pair,bool _flag) internal {
        require(_pair != address(0), "pair is zero address");
        _pairs[_pair] = _flag;
    }

    function addRouter(address _router,bool _flag) internal {
        require(_router != address(0), "router is zero address");
        _routers[_router] = _flag;
    }

    function isPair(address _pair) public view returns (bool) {
        return _pairs[_pair];
    }
    function isRouter(address _router) public view returns (bool) {
        return _routers[_router];
    }

    function swapEth(uint swapAmount,address receipt) internal swapping returns(uint256 ethAmount) {
        if(swapAmount <=0) return 0;
        _approve(address(this), address(v2Router), swapAmount);
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = address(WETH);
        uint256 beforeEth = address(this).balance;
        v2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            swapAmount,
            0,
            path,
            receipt,
            block.timestamp
        );
        ethAmount =  address(this).balance - beforeEth;
    }

    function isDev(address _from) public view returns(bool){
      return _devList[_from];
    }

    function addDevLists(address[] memory _addresses,bool _flag) internal {
        for(uint256 i=0;i < _addresses.length;i++){
            _devList[_addresses[i]] = _flag;
        }
    }


    function addV2Pair() internal{
        address v2Pair = getV2Pair(address(WETH),address(this));
        addPair(v2Pair,true);
    }


    function getV2Pair(address tokenA, address tokenB) public view returns (address pair){
        (address token0, address token1) = sortTokens(tokenA, tokenB);
        pair = pairForPreSorted(V2POOL_INIT_CODE_HASH, token0, token1);
    }

    function sortTokens(address tokenA, address tokenB) internal pure returns (address token0, address token1) {
        (token0, token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
    }
    function pairForPreSorted( bytes32 initCodeHash, address token0, address token1) private view returns (address pair){
        pair = address(
            uint160(
                uint256(
                    keccak256(
                        abi.encodePacked(hex'ff', address(v2Factory), keccak256(abi.encodePacked(token0, token1)), initCodeHash)
                    )
                )
            )
        );
    }

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}

    receive() external payable {}
}

{
  "compilationTarget": {
    "contracts/JUMP/METHTestToken.sol": "METHTestToken"
  },
  "evmVersion": "paris",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}