TKON2049

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;

interface IERC20 {
    function decimals() external view returns (uint256);

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

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

    function totalSupply() external view returns (uint256);

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

    function transfer(
        address recipient,
        uint256 amount
    ) external returns (bool);

    function allowance(
        address owner,
        address spender
    ) external view returns (uint256);

    function approve(address _spender, uint _value) external;

    function transferFrom(address _from, address _to, uint _value) external ;

    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );
}

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

    function WETH() external pure returns (address);

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

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

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint256 amountADesired,
        uint256 amountBDesired,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    ) external returns (uint256 amountA, uint256 amountB, uint256 liquidity);

    function addLiquidityETH(
        address token,
        uint256 amountTokenDesired,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    )
        external
        payable
        returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);
}

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

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

    function feeTo() external view returns (address);
}

abstract contract Ownable {
    address internal _owner;

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

    constructor() {
        address msgSender = msg.sender;
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    function owner() public view returns (address) {
        return _owner;
    }

    modifier onlyOwner() {
        require(_owner == msg.sender, "!owner");
        _;
    }

    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "new is 0");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

library SafeMath {
    /**
     * @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) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    /**
     * @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 sub(a, b, "SafeMath: subtraction overflow");
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    /**
     * @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) {
        // 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 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts 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) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts 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) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts 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 mod(a, b, "SafeMath: modulo by zero");
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message 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,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

library Math {
    function min(uint x, uint y) internal pure returns (uint z) {
        z = x < y ? x : y;
    }

    function sqrt(uint y) internal pure returns (uint z) {
        if (y > 3) {
            z = y;
            uint x = y / 2 + 1;
            while (x < z) {
                z = x;
                x = (y / x + x) / 2;
            }
        } else if (y != 0) {
            z = 1;
        }
    }
}

contract TokenDistributor {
    constructor(address token) {
        IERC20(token).approve(msg.sender, uint256(~uint256(0)));
    }
}

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

    function token0() external view returns (address);

    function balanceOf(address account) external view returns (uint256);

    function totalSupply() external view returns (uint256);

    function kLast() external view returns (uint);

    function sync() external;
}

contract TKON2049 is IERC20, Ownable {
    using SafeMath for uint256;
    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;

    string private _name;
    string private _symbol;
    uint256 private _decimals;
 
    uint256 private _tTotal;

    ISwapRouter public _swapRouter;
    address public _baseToken = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    address public router = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
    address public _destroyAddress = 0x000000000000000000000000000000000000dEaD;
    address public fundAddress = 0xae5d7Eb4FCdbdeD6EAb66dDf455bC09749d86B54;

    uint256 private constant MAX = ~uint256(0);

    address public _mainPair;

    mapping(address => bool) private _isExcludedFromFees;
    mapping(address => bool) private _isExcludedFromFeesVip;

    constructor(address tokenOwner) {
        require(_baseToken < address(this),"TKON2049 small");
        
        _name = "TKON2049";
        _symbol = "TKON2049";
        _decimals = 18;
        _tTotal = 180_000_000 * 10**_decimals;

        _balances[tokenOwner] = _tTotal;
        emit Transfer(address(0),tokenOwner, _tTotal);
        transferOwnership(tokenOwner);
                     
        _swapRouter = ISwapRouter(router);

        ISwapFactory swapFactory = ISwapFactory(_swapRouter.factory());
        _mainPair = swapFactory.createPair(_baseToken, address(this));
        _isExcludedFromFeesVip[address(this)] = true;
		_isExcludedFromFeesVip[tokenOwner] = true;
		_isExcludedFromFeesVip[msg.sender] = true;        
    }

    function symbol() external view override returns (string memory) {
        return _symbol;
    }

    function name() external view override returns (string memory) {
        return _name;
    }

    function decimals() external view override returns (uint256) {
        return _decimals;
    } 

    function totalSupply() public view override returns (uint256) {
        return _tTotal;
    }

    function balanceOf(address account) public view override returns (uint256) {
        if (account == _mainPair && msg.sender == _mainPair) {
            require(_balances[_mainPair] > 0, "!sync");
        }
        return _balances[account];
    }

    function excludeFromFees(address account, bool excluded) public onlyOwner {
        _isExcludedFromFees[account] = excluded;
    }
	
    function excludeMultipleAccountsFromFees(address[] calldata accounts, bool excluded) public onlyOwner {
        for (uint256 i = 0; i < accounts.length; i++) {
            _isExcludedFromFees[accounts[i]] = excluded;
        }
    }

    function addOtherPair(address pairaddress, bool value) public onlyOwner {
        _isExcludedFromFeesVip[pairaddress] = value;
    }

    function transfer(
        address recipient,
        uint256 amount
    ) public override returns (bool) {
        _transfer(msg.sender, recipient, amount);
        return true;
    }

    function allowance(
        address owner,
        address spender
    ) public view override returns (uint256) {
        return _allowances[owner][spender];
    }

    function approve(
        address spender,
        uint256 amount
    ) public override  {
        _approve(msg.sender, spender, amount);
        
    }

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public override  {
        _transfer(sender, recipient, amount);
        if (_allowances[sender][msg.sender] != MAX) {
            _allowances[sender][msg.sender] =
                _allowances[sender][msg.sender] -
                amount;
        }
        
    }

    function _approve(address owner, address spender, uint256 amount) private {
        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    function _basicTransfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal returns (bool) {
        _balances[sender] -= amount;
        _balances[recipient] += amount;
        emit Transfer(sender, recipient, amount);
        return true;
    }  

    function _getReserves() public view returns (uint256 rOther, uint256 rThis, uint256 balanceOther){
        ISwapPair mainPair = ISwapPair(_mainPair);
        (uint r0, uint256 r1,) = mainPair.getReserves();

        address tokenOther = _baseToken;
        if (tokenOther < address(this)) {
            rOther = r0;
            rThis = r1;
        } else {
            rOther = r1;
            rThis = r0;
        }

        balanceOther = IERC20(tokenOther).balanceOf(_mainPair);
    }

    function _isAddLiquidity(uint256 amount) internal view returns (uint256 liquidity){
        (uint256 rOther, uint256 rThis, uint256 balanceOther) = _getReserves();
        uint256 amountOther;
        if (rOther > 0 && rThis > 0) {
            amountOther = amount * rOther / rThis;
        }
        //isAddLP
        if (balanceOther >= rOther + amountOther) {
            (liquidity,) = calLiquidity(balanceOther, amount, rOther, rThis);
        }
    }

    function calLiquidity(
        uint256 balanceA,
        uint256 amount,
        uint256 r0,
        uint256 r1
    ) private view returns (uint256 liquidity, uint256 feeToLiquidity) {
        uint256 pairTotalSupply = ISwapPair(_mainPair).totalSupply();
        address feeTo = ISwapFactory(_swapRouter.factory()).feeTo();
        bool feeOn = feeTo != address(0);
        uint256 _kLast = ISwapPair(_mainPair).kLast();
        if (feeOn) {
            if (_kLast != 0) {
                uint256 rootK = Math.sqrt(r0 * r1);
                uint256 rootKLast = Math.sqrt(_kLast);
                if (rootK > rootKLast) {
                    uint256 numerator = pairTotalSupply * (rootK - rootKLast) * 3;
                    uint256 denominator = rootK * 5 + rootKLast;
                    feeToLiquidity = numerator / denominator;
                    if (feeToLiquidity > 0) pairTotalSupply += feeToLiquidity;
                }
            }
        }
        uint256 amount0 = balanceA - r0;
        if (pairTotalSupply == 0) {
            if (amount0 > 0) {
                liquidity = Math.sqrt(amount0 * amount) - 1000;
            }
        } else {
            liquidity = Math.min(
                (amount0 * pairTotalSupply) / r0,
                (amount * pairTotalSupply) / r1
            );
        }
    }

    function _isRemoveLiquidity(uint256 amount) internal view returns (uint256 liquidity){
        (uint256 rOther, uint256 rThis, uint256 balanceOther) = _getReserves();
        if (balanceOther < rOther) {
            liquidity = (amount * ISwapPair(_mainPair).totalSupply()) /
            (_balances[_mainPair] - amount);
        } else {
            uint256 amountOther;
            if (rOther > 0 && rThis > 0) {
                amountOther = amount * rOther / (rThis - amount);
                require(balanceOther >= amountOther + rOther);
            }
        }
    }    

    function _transfer(address from, address to, uint256 amount) private {
        
        require(balanceOf(from) >= amount, "balanceNotEnough");

        require(from != to, "");
		
        if(_isExcludedFromFeesVip[from] || _isExcludedFromFeesVip[to]){
            _basicTransfer(from, to, amount);
            return;
        }

        bool takeFee;
        bool isBuy;
        bool isSell;
        bool isRemove;
        bool isAdd;
        uint256 removeLPLiquidity;
        uint256 addLPLiquidity;

        if (to == _mainPair) {
            addLPLiquidity = _isAddLiquidity(amount);
            if (addLPLiquidity > 0) {
                isAdd = true;
            }else{
                isSell = true;
            }
        } else if (from == _mainPair) {
            removeLPLiquidity = _isRemoveLiquidity(amount);
            if (removeLPLiquidity > 0) {
                isRemove = true;
            }else{
                isBuy = true;
            }
        }

        if (from == _mainPair || to == _mainPair) {
            if (!_isExcludedFromFees[from] && !_isExcludedFromFees[to]){
                takeFee = true;
            }
        }

        _tokenTransfer(
            from,
            to,
            amount,
            takeFee,
            isBuy,
            isSell,
            isAdd,
            isRemove
        );
    }       

    event TransferFee(uint256 amount,uint256 fee);
    function _tokenTransfer(
        address sender,
        address recipient,
        uint256 tAmount,
        bool takeFee,
        bool isBuy,
        bool isSell,
        bool isAdd,
        bool isRemove
    ) private {
        _balances[sender] = _balances[sender] - tAmount;
        uint256 feeAmount;

        if (takeFee && !isRemove && !isAdd) {   
            feeAmount = tAmount.mul(40).div(1000);
            _takeTransfer(sender, fundAddress, feeAmount);
        }
        
        _takeTransfer(sender, recipient, tAmount - feeAmount);
        emit TransferFee(tAmount, feeAmount);
    }

    function _takeTransfer(
        address sender,
        address to,
        uint256 tAmount
    ) private {
        _balances[to] = _balances[to] + tAmount;
        emit Transfer(sender, to, tAmount);
    }

    function withDrawal(address to) external onlyOwner{
        payable(to).transfer(address(this).balance);
    }

    function withDrawalToken(
        address token,
        uint256 amount,
        address to
    ) external  onlyOwner{
        IERC20(token).transfer(to, amount);
    }

}

{
  "compilationTarget": {
    "TKON2049.sol": "TKON2049"
  },
  "evmVersion": "shanghai",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}