creation_sourcecode: // SPDX-License-Identifier: MIT
  
  /*
  
  Website: https://zkinfra.io/
  Telegram: https://t.me/zkinfra_portal
  Twitter: https://x.com/zkInfra_io
  Medium : https://medium.com/@zkInfra
  Linktree: https://linktr.ee/zkinfra
  
  */
  
  pragma solidity ^0.8.24;
  
  abstract contract Context {
      function _msgSender() internal view virtual returns (address payable) {
          return payable(msg.sender);
      }
  
      function _msgData() internal view virtual returns (bytes memory) {
          this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
          return msg.data;
      }
  }
  
  interface IERC20 {
      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);
  
      event Transfer(address indexed from, address indexed to, uint256 value);
      event Approval(
          address indexed owner,
          address indexed spender,
          uint256 value
      );
  }
  
  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);
  }
  
  contract ERC20 is Context, IERC20, IERC20Metadata {
      mapping(address => uint256) private _balances;
  
      mapping(address => mapping(address => uint256)) private _allowances;
  
      uint256 private _totalSupply;
  
      string private _name;
      string private _symbol;
      uint8 private _decimals;
  
      constructor(
          string memory name_,
          string memory symbol_,
          uint8 decimals_
      ) {
          _name = name_;
          _symbol = symbol_;
          _decimals = decimals_;
      }
  
      function name() public view virtual override returns (string memory) {
          return _name;
      }
  
      function symbol() public view virtual override returns (string memory) {
          return _symbol;
      }
  
      function decimals() public view virtual override returns (uint8) {
          return _decimals;
      }
  
      function totalSupply() public view virtual override returns (uint256) {
          return _totalSupply;
      }
  
      function balanceOf(address account)
          public
          view
          virtual
          override
          returns (uint256)
      {
          return _balances[account];
      }
  
      function transfer(address recipient, uint256 amount)
          public
          virtual
          override
          returns (bool)
      {
          _transfer(_msgSender(), recipient, amount);
          return true;
      }
  
      function allowance(address owner, address spender)
          public
          view
          virtual
          override
          returns (uint256)
      {
          return _allowances[owner][spender];
      }
  
      function approve(address spender, uint256 amount)
          public
          virtual
          override
          returns (bool)
      {
          _approve(_msgSender(), spender, amount);
          return true;
      }
  
      function transferFrom(
          address sender,
          address recipient,
          uint256 amount
      ) public virtual override returns (bool) {
          _transfer(sender, recipient, amount);
  
          uint256 currentAllowance = _allowances[sender][_msgSender()];
          require(
              currentAllowance >= amount,
              "ERC20: transfer amount exceeds allowance"
          );
          unchecked {
              _approve(sender, _msgSender(), currentAllowance - amount);
          }
  
          return true;
      }
  
      function increaseAllowance(address spender, uint256 addedValue)
          public
          virtual
          returns (bool)
      {
          _approve(
              _msgSender(),
              spender,
              _allowances[_msgSender()][spender] + addedValue
          );
          return true;
      }
  
      function decreaseAllowance(address spender, uint256 subtractedValue)
          public
          virtual
          returns (bool)
      {
          uint256 currentAllowance = _allowances[_msgSender()][spender];
          require(
              currentAllowance >= subtractedValue,
              "ERC20: decreased allowance below zero"
          );
          unchecked {
              _approve(_msgSender(), spender, currentAllowance - subtractedValue);
          }
  
          return true;
      }
  
      function _transfer(
          address sender,
          address recipient,
          uint256 amount
      ) internal virtual {
          require(sender != address(0), "ERC20: transfer from the zero address");
          require(recipient != address(0), "ERC20: transfer to the zero address");
  
          _beforeTokenTransfer(sender, recipient, amount);
  
          uint256 senderBalance = _balances[sender];
          require(
              senderBalance >= amount,
              "ERC20: transfer amount exceeds balance"
          );
          unchecked {
              _balances[sender] = senderBalance - amount;
          }
          _balances[recipient] += amount;
  
          emit Transfer(sender, recipient, amount);
  
          _afterTokenTransfer(sender, recipient, amount);
      }
  
      function _mint(address account, uint256 amount) internal virtual {
          require(account != address(0), "ERC20: mint to the zero address");
  
          _beforeTokenTransfer(address(0), account, amount);
  
          _totalSupply += amount;
          _balances[account] += amount;
          emit Transfer(address(0), account, amount);
  
          _afterTokenTransfer(address(0), account, amount);
      }
  
      function _burn(address account, uint256 amount) internal virtual {
          require(account != address(0), "ERC20: burn from the zero address");
  
          _beforeTokenTransfer(account, address(0), amount);
  
          uint256 accountBalance = _balances[account];
          require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
          unchecked {
              _balances[account] = accountBalance - amount;
          }
          _totalSupply -= amount;
  
          emit Transfer(account, address(0), amount);
  
          _afterTokenTransfer(account, address(0), amount);
      }
  
      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);
      }
  
      function _beforeTokenTransfer(
          address from,
          address to,
          uint256 amount
      ) internal virtual {}
  
      function _afterTokenTransfer(
          address from,
          address to,
          uint256 amount
      ) internal virtual {}
  }
  
  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;
          // assert(a == b * c + a % b); // There is no case in which this doesn't hold
  
          return c;
      }
  
      function mod(uint256 a, uint256 b) internal pure returns (uint256) {
          return mod(a, b, "SafeMath: modulo by zero");
      }
  
      function mod(
          uint256 a,
          uint256 b,
          string memory errorMessage
      ) internal pure returns (uint256) {
          require(b != 0, errorMessage);
          return a % b;
      }
  }
  
  library Address {
      function isContract(address account) internal view returns (bool) {
          // According to EIP-1052, 0x0 is the value returned for not-yet created accounts
          // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
          // for accounts without code, i.e. `keccak256('')`
          bytes32 codehash;
          bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
          // solhint-disable-next-line no-inline-assembly
          assembly {
              codehash := extcodehash(account)
          }
          return (codehash != accountHash && codehash != 0x0);
      }
  
      function sendValue(address payable recipient, uint256 amount) internal {
          require(
              address(this).balance >= amount,
              "Address: insufficient balance"
          );
  
          // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
          (bool success, ) = recipient.call{value: amount}("");
          require(
              success,
              "Address: unable to send value, recipient may have reverted"
          );
      }
  
      function functionCall(address target, bytes memory data)
          internal
          returns (bytes memory)
      {
          return functionCall(target, data, "Address: low-level call failed");
      }
  
      function functionCall(
          address target,
          bytes memory data,
          string memory errorMessage
      ) internal returns (bytes memory) {
          return _functionCallWithValue(target, data, 0, errorMessage);
      }
  
      function functionCallWithValue(
          address target,
          bytes memory data,
          uint256 value
      ) internal returns (bytes memory) {
          return
              functionCallWithValue(
                  target,
                  data,
                  value,
                  "Address: low-level call with value failed"
              );
      }
  
      function functionCallWithValue(
          address target,
          bytes memory data,
          uint256 value,
          string memory errorMessage
      ) internal returns (bytes memory) {
          require(
              address(this).balance >= value,
              "Address: insufficient balance for call"
          );
          return _functionCallWithValue(target, data, value, errorMessage);
      }
  
      function _functionCallWithValue(
          address target,
          bytes memory data,
          uint256 weiValue,
          string memory errorMessage
      ) private returns (bytes memory) {
          require(isContract(target), "Address: call to non-contract");
  
          (bool success, bytes memory returndata) = target.call{value: weiValue}(
              data
          );
          if (success) {
              return returndata;
          } else {
              if (returndata.length > 0) {
                  assembly {
                      let returndata_size := mload(returndata)
                      revert(add(32, returndata), returndata_size)
                  }
              } else {
                  revert(errorMessage);
              }
          }
      }
  }
  
  contract Ownable is Context {
      address private _owner;
      address private _previousOwner;
  
      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 waiveOwnership() public virtual onlyOwner {
          emit OwnershipTransferred(_owner, address(0));
          _owner = address(0);
      }
  
      function transferOwnership(address newOwner) public virtual onlyOwner {
          require(
              newOwner != address(0),
              "Ownable: new owner is the zero address"
          );
          emit OwnershipTransferred(_owner, newOwner);
          _owner = newOwner;
      }
  }
  
  interface IUniswapV2Factory {
      event PairCreated(
          address indexed token0,
          address indexed token1,
          address pair,
          uint256
      );
  
      function feeTo() external view returns (address);
  
      function feeToSetter() 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);
  
      function setFeeTo(address) external;
  
      function setFeeToSetter(address) external;
  }
  
  interface IUniswapV2Pair {
      event Approval(
          address indexed owner,
          address indexed spender,
          uint256 value
      );
      event Transfer(address indexed from, address indexed to, uint256 value);
  
      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 (uint256);
  
      function balanceOf(address owner) external view returns (uint256);
  
      function allowance(address owner, address spender)
          external
          view
          returns (uint256);
  
      function approve(address spender, uint256 value) external returns (bool);
  
      function transfer(address to, uint256 value) external returns (bool);
  
      function transferFrom(
          address from,
          address to,
          uint256 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 (uint256);
  
      function permit(
          address owner,
          address spender,
          uint256 value,
          uint256 deadline,
          uint8 v,
          bytes32 r,
          bytes32 s
      ) external;
  
      event Burn(
          address indexed sender,
          uint256 amount0,
          uint256 amount1,
          address indexed to
      );
      event Swap(
          address indexed sender,
          uint256 amount0In,
          uint256 amount1In,
          uint256 amount0Out,
          uint256 amount1Out,
          address indexed to
      );
      event Sync(uint112 reserve0, uint112 reserve1);
  
      function MINIMUM_LIQUIDITY() external pure returns (uint256);
  
      function factory() external view returns (address);
  
      function token0() external view returns (address);
  
      function token1() external view returns (address);
  
      function getReserves()
          external
          view
          returns (
              uint112 reserve0,
              uint112 reserve1,
              uint32 blockTimestampLast
          );
  
      function price0CumulativeLast() external view returns (uint256);
  
      function price1CumulativeLast() external view returns (uint256);
  
      function kLast() external view returns (uint256);
  
      function burn(address to)
          external
          returns (uint256 amount0, uint256 amount1);
  
      function swap(
          uint256 amount0Out,
          uint256 amount1Out,
          address to,
          bytes calldata data
      ) external;
  
      function skim(address to) external;
  
      function sync() external;
  
      function initialize(address, address) external;
  }
  
  interface IUniswapV2Router01 {
      function factory() external pure returns (address);
  
      function WETH() external pure returns (address);
  
      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
          );
  
      function removeLiquidity(
          address tokenA,
          address tokenB,
          uint256 liquidity,
          uint256 amountAMin,
          uint256 amountBMin,
          address to,
          uint256 deadline
      ) external returns (uint256 amountA, uint256 amountB);
  
      function removeLiquidityETH(
          address token,
          uint256 liquidity,
          uint256 amountTokenMin,
          uint256 amountETHMin,
          address to,
          uint256 deadline
      ) external returns (uint256 amountToken, uint256 amountETH);
  
      function removeLiquidityWithPermit(
          address tokenA,
          address tokenB,
          uint256 liquidity,
          uint256 amountAMin,
          uint256 amountBMin,
          address to,
          uint256 deadline,
          bool approveMax,
          uint8 v,
          bytes32 r,
          bytes32 s
      ) external returns (uint256 amountA, uint256 amountB);
  
      function removeLiquidityETHWithPermit(
          address token,
          uint256 liquidity,
          uint256 amountTokenMin,
          uint256 amountETHMin,
          address to,
          uint256 deadline,
          bool approveMax,
          uint8 v,
          bytes32 r,
          bytes32 s
      ) external returns (uint256 amountToken, uint256 amountETH);
  
      function swapExactTokensForTokens(
          uint256 amountIn,
          uint256 amountOutMin,
          address[] calldata path,
          address to,
          uint256 deadline
      ) external returns (uint256[] memory amounts);
  
      function swapTokensForExactTokens(
          uint256 amountOut,
          uint256 amountInMax,
          address[] calldata path,
          address to,
          uint256 deadline
      ) external returns (uint256[] memory amounts);
  
      function swapExactETHForTokens(
          uint256 amountOutMin,
          address[] calldata path,
          address to,
          uint256 deadline
      ) external payable returns (uint256[] memory amounts);
  
      function swapTokensForExactETH(
          uint256 amountOut,
          uint256 amountInMax,
          address[] calldata path,
          address to,
          uint256 deadline
      ) external returns (uint256[] memory amounts);
  
      function swapExactTokensForETH(
          uint256 amountIn,
          uint256 amountOutMin,
          address[] calldata path,
          address to,
          uint256 deadline
      ) external returns (uint256[] memory amounts);
  
      function swapETHForExactTokens(
          uint256 amountOut,
          address[] calldata path,
          address to,
          uint256 deadline
      ) external payable returns (uint256[] memory amounts);
  
      function quote(
          uint256 amountA,
          uint256 reserveA,
          uint256 reserveB
      ) external pure returns (uint256 amountB);
  
      function getAmountOut(
          uint256 amountIn,
          uint256 reserveIn,
          uint256 reserveOut
      ) external pure returns (uint256 amountOut);
  
      function getAmountIn(
          uint256 amountOut,
          uint256 reserveIn,
          uint256 reserveOut
      ) external pure returns (uint256 amountIn);
  
      function getAmountsOut(uint256 amountIn, address[] calldata path)
          external
          view
          returns (uint256[] memory amounts);
  
      function getAmountsIn(uint256 amountOut, address[] calldata path)
          external
          view
          returns (uint256[] memory amounts);
  }
  
  interface IUniswapV2Router02 is IUniswapV2Router01 {
      function removeLiquidityETHSupportingFeeOnTransferTokens(
          address token,
          uint256 liquidity,
          uint256 amountTokenMin,
          uint256 amountETHMin,
          address to,
          uint256 deadline
      ) external returns (uint256 amountETH);
  
      function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
          address token,
          uint256 liquidity,
          uint256 amountTokenMin,
          uint256 amountETHMin,
          address to,
          uint256 deadline,
          bool approveMax,
          uint8 v,
          bytes32 r,
          bytes32 s
      ) external returns (uint256 amountETH);
  
      function swapExactTokensForTokensSupportingFeeOnTransferTokens(
          uint256 amountIn,
          uint256 amountOutMin,
          address[] calldata path,
          address to,
          uint256 deadline
      ) external;
  
      function swapExactETHForTokensSupportingFeeOnTransferTokens(
          uint256 amountOutMin,
          address[] calldata path,
          address to,
          uint256 deadline
      ) external payable;
  
      function swapExactTokensForETHSupportingFeeOnTransferTokens(
          uint256 amountIn,
          uint256 amountOutMin,
          address[] calldata path,
          address to,
          uint256 deadline
      ) external;
  }
  
  contract zkInfra is ERC20, Ownable {
      using SafeMath for uint256;
  
      IUniswapV2Router02 public immutable uniswapV2Router;
      address public immutable uniswapV2Pair;
      address public router = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
  
      bool private swapping;
      uint256 public buyFees;
      uint256 public sellFees;
      uint256 private _maxSwapableTokens;
  
      uint256 public _preventSwapBefore = 20;
      uint256 public _removeLimitsAt = 30;
      uint256 public _totalBuys = 0;
  
      mapping(address => bool) private _isExcludedFromFees;
      mapping(address => bool) public _isExcludedmaxTransaction;
      mapping(address => bool) public automatedMarketMakerPairs;
  
      address private developmentWallet;
      address private marketingWallet;
      uint256 public maxTransaction;
      uint256 public swapTokensAtAmount;
      uint256 public maxWallet;
  
  
      bool public limitsInEffect = true;
      bool public tradingActive = false;
      bool public swapEnabled = false;
  
      mapping(address => uint256) private _holderLastTransferBlock;
      bool public transDelayActived = true;
      uint256 public launchBlockNo;
  
      event ExcludeFromFees(address indexed account, bool isExcluded);
  
      event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);
  
      event DevelopmentWalletUpdated(
          address indexed newWallet,
          address indexed oldWallet
      );
  
      event TreasuryWalletUpdated(
          address indexed newWallet,
          address indexed oldWallet
      );
  
      event MarketingWalletUpdated(
          address indexed newWallet,
          address indexed oldWallet
      );
  
      event SwapAndLiquify(
          uint256 tokensSwapped,
          uint256 ethReceived,
          uint256 tokensIntoLiquidity
      );
  
      event UpdateUniswapV2Router(
          address indexed newAddress,
          address indexed oldAddress
      );
  
      constructor() ERC20("zkInfra", "ZKIN", 18) {
          IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(router);
  
          excludeFromMaxTransaction(address(_uniswapV2Router), true);
          uniswapV2Router = _uniswapV2Router;
  
          uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
              .createPair(address(this), _uniswapV2Router.WETH());
          excludeFromMaxTransaction(address(uniswapV2Pair), true);
          _setAutomatedMarketMakerPair(address(uniswapV2Pair), true);
  
          uint256 totalSupply = 1_000_000 * (10**18);
  
          maxTransaction = (totalSupply * 100) / 10_000; // 1%
          maxWallet = (totalSupply * 100) / 10_000; // 1%
          swapTokensAtAmount = (totalSupply * 50) / 10_000; // 0.5%
          _maxSwapableTokens = (totalSupply * 100) / 10_000; // 1%
  
          buyFees = 3_000;
          sellFees = 4_000;
  
          developmentWallet = 0xfFC213Dd045773Ee27000D6B127c0B2524A0e5F7;
          marketingWallet = 0x82217b9FAb59A11FB2185d7F6938c4e804e90b95;
  
          excludeFromFees(owner(), true);
          excludeFromFees(address(this), true);
          excludeFromFees(address(0xdead), true);
  
          excludeFromMaxTransaction(owner(), true);
          excludeFromMaxTransaction(address(this), true);
          excludeFromMaxTransaction(address(0xdead), true);
  
          _mint(msg.sender, totalSupply);
      }
  
      receive() external payable {}
  
      function launch() external onlyOwner {
          require(!tradingActive, "Token launched");
          tradingActive = true;
          launchBlockNo = block.number;
          swapEnabled = true;
      }
  
      function limitsOff() external onlyOwner returns (bool) {
          limitsInEffect = false;
          return true;
      }
  
      // disable Transfer delay - cannot be reenabled
      function disableTransferDelay() external onlyOwner returns (bool) {
          transDelayActived = false;
          return true;
      }
  
      function excludeFromMaxTransaction(address updAds, bool isEx)
          public
          onlyOwner
      {
          _isExcludedmaxTransaction[updAds] = isEx;
      }
  
      function excludeFromFees(address account, bool excluded) public onlyOwner {
          _isExcludedFromFees[account] = excluded;
          emit ExcludeFromFees(account, excluded);
      }
  
      function setAutomatedMarketMakerPair(address pair, bool value)
          public
          onlyOwner
      {
          require(
              pair != uniswapV2Pair,
              "The pair cannot be removed from automatedMarketMakerPairs"
          );
  
          _setAutomatedMarketMakerPair(pair, value);
      }
  
      function _setAutomatedMarketMakerPair(address pair, bool value) private {
          automatedMarketMakerPairs[pair] = value;
          emit SetAutomatedMarketMakerPair(pair, value);
      }
  
      function updateMarketingWallet(address newWallet) external onlyOwner {
          emit MarketingWalletUpdated(newWallet, marketingWallet);
          marketingWallet = newWallet;
      }
  
      function updateDevelopmentWallet(address newWallet) external onlyOwner {
          emit DevelopmentWalletUpdated(newWallet, developmentWallet);
          developmentWallet = newWallet;
      }
  
      function isExcludedFromFees(address account) public view returns (bool) {
          return _isExcludedFromFees[account];
      }
  
      function _transfer(
          address from,
          address to,
          uint256 amount
      ) internal override {
          require(from != address(0), "ERC20: transfer from the zero address");
          require(to != address(0), "ERC20: transfer to the zero address");
  
          if (amount == 0) {
              super._transfer(from, to, 0);
              return;
          }
  
          if (limitsInEffect) {
              if (
                  from != owner() &&
                  to != owner() &&
                  to != address(0) &&
                  to != address(0xdead) &&
                  !swapping
              ) {
                  if (!tradingActive) {
                      require(
                          _isExcludedFromFees[from] || _isExcludedFromFees[to],
                          "Trading is not active."
                      );
                  }
  
                  if (transDelayActived) {
                      if (
                          to != owner() &&
                          to != address(uniswapV2Router) &&
                          to != address(uniswapV2Pair)
                      ) {
                          require(
                              _holderLastTransferBlock[tx.origin] < block.number,
                              "_transfer:: Transfer Delay enabled.  Only one purchase per block allowed."
                          );
                          _holderLastTransferBlock[tx.origin] = block.number;
                      }
                  }
  
                  // BUY
                  if (
                      automatedMarketMakerPairs[from] &&
                      !_isExcludedmaxTransaction[to]
                  ) {
                      require(
                          amount <= maxTransaction,
                          "Buy transfer amount exceeds the maxTransaction."
                      );
                      require(
                          amount + balanceOf(to) <= maxWallet,
                          "Max wallet exceeded"
                      );
                  }
                  // SELL
                  else if (
                      automatedMarketMakerPairs[to] &&
                      !_isExcludedmaxTransaction[from]
                  ) {
                      require(
                          amount <= maxTransaction,
                          "Sell transfer amount exceeds the maxTransaction."
                      );
                  } else if (!_isExcludedmaxTransaction[to]) {
                      require(
                          amount + balanceOf(to) <= maxWallet,
                          "Max wallet exceeded"
                      );
                  }
              }
          }
  
  
          uint256 contractTokenBalance = balanceOf(address(this));
  
          bool canSwap = contractTokenBalance >= swapTokensAtAmount;
  
          if (
              canSwap &&
              swapEnabled &&
              !swapping &&
              !automatedMarketMakerPairs[from] &&
              !_isExcludedFromFees[from] &&
              !_isExcludedFromFees[to] &&
              _totalBuys > _preventSwapBefore
          ) {
              swapping = true;
              swapBack(min(contractTokenBalance, _maxSwapableTokens));
              swapping = false;
          }
  
          bool takeFee = !swapping;
  
          if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
              takeFee = false;
          }
  
          uint256 fees = 0;
  
          if (takeFee) {
              // SELL
              if (automatedMarketMakerPairs[to] && sellFees > 0) {
                  fees = amount.mul(sellFees).div(10_000);
              }
              // BUY
              else if (automatedMarketMakerPairs[from] && buyFees > 0) {
                  fees = amount.mul(buyFees).div(10_000);
                  _totalBuys++;
              }
  
              if (fees > 0) {
                  super._transfer(from, address(this), fees);
              }
  
              amount -= fees;
          }
  
          super._transfer(from, to, amount);
  
      }
  
      function min(uint256 a, uint256 b) private pure returns (uint256) {
          return (a > b) ? b : a;
      }
  
      function swapTokensForEth(uint256 tokenAmount) private {
          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 swapBack(uint256 amount) private {
          bool success;
  
          if (amount == 0) {
              return;
          }
  
          uint256 amountToSwapForETH = amount;
          swapTokensForEth(amountToSwapForETH);
          uint256 ethBalance = address(this).balance;
          // Calculate allocations
          uint256 mkt_amount = ethBalance / 2;
          uint256 development_amount = ethBalance - mkt_amount;
  
          (success, ) = address(marketingWallet).call{value: mkt_amount}("");
          (success, ) = address(developmentWallet).call{
              value: development_amount
          }("");
      }
  
      function changeSwapTokensAtAmount(uint256 newValue)
          external
          onlyOwner
          returns (bool)
      {
          require(
              newValue >= (totalSupply() * 1) / 100_000,
              "Swap amount < 0.001% total supply."
          );
          require(
              newValue <= (totalSupply() * 100) / 10_000,
              "Swap amount > 1% total supply."
          );
          swapTokensAtAmount = newValue;
          return true;
      }
  
      function changeMaxTransaction(uint256 newValue) external onlyOwner {
          require(
              newValue >= ((totalSupply() * 10) / 10_000),
              "maxTransaction < 0.1%"
          );
          maxTransaction = newValue * (10**decimals());
      }
  
      function changeMaxWallet(uint256 newValue) external onlyOwner {
          require(
              newValue >= ((totalSupply() * 50) / 10_000),
              "maxWallet < 0.5%"
          );
          maxWallet = newValue * (10**decimals());
      }
  
      // only use to disable contract sales if absolutely necessary (emergency use only)
      function updateSwapEnabled(bool _isEnable) external onlyOwner {
          swapEnabled = _isEnable;
      }
  
      function updateBuyFee(uint256 _newFee) external onlyOwner {
          require(buyFees <= 5_000);
          buyFees = _newFee;
      }
  
      function updateSellFee(uint256 _newFee) external onlyOwner {
          require(sellFees <= 5_000);
          sellFees = _newFee;
      }
  }