creation_sourcecode: /*
   * SPDX-License-Identifier: MIT
   * https://fuatoken.io/
   * https://twitter.com/FUA_Token
   * https://t.me/FUA_Eth
   */
  
  pragma solidity 0.8.25;
  
  library SafeMath {
      /**
       * @dev Returns the addition of two unsigned integers, with an overflow flag.
       *
       * _Available since v3.4._
       */
      function tryAdd(
          uint256 a,
          uint256 b
      ) internal pure returns (bool, uint256) {
          unchecked {
              uint256 c = a + b;
              if (c < a) return (false, 0);
              return (true, c);
          }
      }
  
      /**
       * @dev Returns the substraction of two unsigned integers, with an overflow flag.
       *
       * _Available since v3.4._
       */
      function trySub(
          uint256 a,
          uint256 b
      ) internal pure returns (bool, uint256) {
          unchecked {
              if (b > a) return (false, 0);
              return (true, a - b);
          }
      }
  
      /**
       * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
       *
       * _Available since v3.4._
       */
      function tryMul(
          uint256 a,
          uint256 b
      ) internal pure returns (bool, uint256) {
          unchecked {
              // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
              // benefit is lost if 'b' is also tested.
              // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
              if (a == 0) return (true, 0);
              uint256 c = a * b;
              if (c / a != b) return (false, 0);
              return (true, c);
          }
      }
  
      /**
       * @dev Returns the division of two unsigned integers, with a division by zero flag.
       *
       * _Available since v3.4._
       */
      function tryDiv(
          uint256 a,
          uint256 b
      ) internal pure returns (bool, uint256) {
          unchecked {
              if (b == 0) return (false, 0);
              return (true, a / b);
          }
      }
  
      /**
       * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
       *
       * _Available since v3.4._
       */
      function tryMod(
          uint256 a,
          uint256 b
      ) internal pure returns (bool, uint256) {
          unchecked {
              if (b == 0) return (false, 0);
              return (true, a % b);
          }
      }
  
      /**
       * @dev Returns the addition of two unsigned integers, reverting on
       * overflow.
       *
       * Counterpart to Solidity's `+` operator.
       *
       * Requirements:
       *
       * - Addition cannot overflow.
       */
      function add(uint256 a, uint256 b) internal pure returns (uint256) {
          return a + b;
      }
  
      /**
       * @dev Returns the subtraction of two unsigned integers, reverting on
       * overflow (when the result is negative).
       *
       * Counterpart to Solidity's `-` operator.
       *
       * Requirements:
       *
       * - Subtraction cannot overflow.
       */
      function sub(uint256 a, uint256 b) internal pure returns (uint256) {
          return a - b;
      }
  
      /**
       * @dev Returns the multiplication of two unsigned integers, reverting on
       * overflow.
       *
       * Counterpart to Solidity's `*` operator.
       *
       * Requirements:
       *
       * - Multiplication cannot overflow.
       */
      function mul(uint256 a, uint256 b) internal pure returns (uint256) {
          return a * b;
      }
  
      /**
       * @dev Returns the integer division of two unsigned integers, reverting on
       * division by zero. The result is rounded towards zero.
       *
       * Counterpart to Solidity's `/` operator.
       *
       * Requirements:
       *
       * - The divisor cannot be zero.
       */
      function div(uint256 a, uint256 b) internal pure returns (uint256) {
          return a / b;
      }
  
      /**
       * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
       * reverting when dividing by zero.
       *
       * Counterpart to Solidity's `%` operator. This function uses a `revert`
       * opcode (which leaves remaining gas untouched) while Solidity uses an
       * invalid opcode to revert (consuming all remaining gas).
       *
       * Requirements:
       *
       * - The divisor cannot be zero.
       */
      function mod(uint256 a, uint256 b) internal pure returns (uint256) {
          return a % b;
      }
  
      /**
       * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
       * overflow (when the result is negative).
       *
       * CAUTION: This function is deprecated because it requires allocating memory for the error
       * message unnecessarily. For custom revert reasons use {trySub}.
       *
       * Counterpart to Solidity's `-` operator.
       *
       * Requirements:
       *
       * - Subtraction cannot overflow.
       */
      function sub(
          uint256 a,
          uint256 b,
          string memory errorMessage
      ) internal pure returns (uint256) {
          unchecked {
              require(b <= a, errorMessage);
              return a - b;
          }
      }
  
      /**
       * @dev Returns the integer division of two unsigned integers, reverting with custom message on
       * division by zero. The result is rounded towards zero.
       *
       * Counterpart to Solidity's `/` operator. Note: this function uses a
       * `revert` opcode (which leaves remaining gas untouched) while Solidity
       * uses an invalid opcode to revert (consuming all remaining gas).
       *
       * Requirements:
       *
       * - The divisor cannot be zero.
       */
      function div(
          uint256 a,
          uint256 b,
          string memory errorMessage
      ) internal pure returns (uint256) {
          unchecked {
              require(b > 0, errorMessage);
              return a / b;
          }
      }
  
      /**
       * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
       * reverting with custom message when dividing by zero.
       *
       * CAUTION: This function is deprecated because it requires allocating memory for the error
       * message unnecessarily. For custom revert reasons use {tryMod}.
       *
       * Counterpart to Solidity's `%` operator. This function uses a `revert`
       * opcode (which leaves remaining gas untouched) while Solidity uses an
       * invalid opcode to revert (consuming all remaining gas).
       *
       * Requirements:
       *
       * - The divisor cannot be zero.
       */
      function mod(
          uint256 a,
          uint256 b,
          string memory errorMessage
      ) internal pure returns (uint256) {
          unchecked {
              require(b > 0, errorMessage);
              return a % b;
          }
      }
  }
  
  interface IERC20 {
      /**
       * @dev Returns the amount of tokens in existence.
       */
      function totalSupply() external view returns (uint256);
  
      /**
       * @dev Returns the amount of tokens owned by `account`.
       */
      function balanceOf(address account) external view returns (uint256);
  
      /**
       * @dev Moves `amount` tokens from the caller's account to `recipient`.
       *
       * Returns a boolean value indicating whether the operation succeeded.
       *
       * Emits a {Transfer} event.
       */
      function transfer(
          address recipient,
          uint256 amount
      ) external returns (bool);
  
      /**
       * @dev Returns the remaining number of tokens that `spender` will be
       * allowed to spend on behalf of `owner` through {transferFrom}. This is
       * zero by default.
       *
       * This value changes when {approve} or {transferFrom} are called.
       */
      function allowance(
          address owner,
          address spender
      ) external view returns (uint256);
  
      /**
       * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
       *
       * Returns a boolean value indicating whether the operation succeeded.
       *
       * IMPORTANT: Beware that changing an allowance with this method brings the risk
       * that someone may use both the old and the new allowance by unfortunate
       * transaction ordering. One possible solution to mitigate this race
       * condition is to first reduce the spender's allowance to 0 and set the
       * desired value afterwards:
       * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
       *
       * Emits an {Approval} event.
       */
      function approve(address spender, uint256 amount) external returns (bool);
  
      /**
       * @dev Moves `amount` tokens from `sender` to `recipient` using the
       * allowance mechanism. `amount` is then deducted from the caller's
       * allowance.
       *
       * Returns a boolean value indicating whether the operation succeeded.
       *
       * Emits a {Transfer} event.
       */
      function transferFrom(
          address sender,
          address recipient,
          uint256 amount
      ) external returns (bool);
  
      /**
       * @dev Emitted when `value` tokens are moved from one account (`from`) to
       * another (`to`).
       *
       * Note that `value` may be zero.
       */
      event Transfer(address indexed from, address indexed to, uint256 value);
  
      /**
       * @dev Emitted when the allowance of a `spender` for an `owner` is set by
       * a call to {approve}. `value` is the new allowance.
       */
      event Approval(
          address indexed owner,
          address indexed spender,
          uint256 value
      );
  }
  
  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);
  }
  
  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 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;
  
      /**
       * @dev Sets the values for {name} and {symbol}.
       *
       * The default value of {decimals} is 18. To select a different value for
       * {decimals} you should overload it.
       *
       * All two of these values are immutable: they can only be set once during
       * construction.
       */
      constructor(string memory name_, string memory symbol_) {
          _name = name_;
          _symbol = symbol_;
      }
  
      /**
       * @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:
       *
       * - `recipient` cannot be the zero address.
       * - the caller must have a balance of at least `amount`.
       */
      function transfer(
          address recipient,
          uint256 amount
      ) public virtual override returns (bool) {
          _transfer(_msgSender(), recipient, 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}.
       *
       * Requirements:
       *
       * - `spender` cannot be the zero address.
       */
      function approve(
          address spender,
          uint256 amount
      ) public virtual override returns (bool) {
          _approve(_msgSender(), spender, amount);
          return true;
      }
  
      /**
       * @dev See {IERC20-transferFrom}.
       *
       * Emits an {Approval} event indicating the upd allowance. This is not
       * required by the EIP. See the note at the beginning of {ERC20}.
       *
       * Requirements:
       *
       * - `sender` and `recipient` cannot be the zero address.
       * - `sender` must have a balance of at least `amount`.
       * - the caller must have allowance for ``sender``'s tokens of at least
       * `amount`.
       */
      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;
      }
  
      /**
       * @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 upd allowance.
       *
       * Requirements:
       *
       * - `spender` cannot be the zero address.
       */
      function increaseAllowance(
          address spender,
          uint256 addedValue
      ) public virtual returns (bool) {
          _approve(
              _msgSender(),
              spender,
              _allowances[_msgSender()][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 upd 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) {
          uint256 currentAllowance = _allowances[_msgSender()][spender];
          require(
              currentAllowance >= subtractedValue,
              "ERC20: decreased allowance below zero"
          );
          unchecked {
              _approve(_msgSender(), spender, currentAllowance - subtractedValue);
          }
  
          return true;
      }
  
      /**
       * @dev Moves `amount` of tokens from `sender` to `recipient`.
       *
       * 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:
       *
       * - `sender` cannot be the zero address.
       * - `recipient` cannot be the zero address.
       * - `sender` must have a balance of at least `amount`.
       */
      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);
      }
  
      /** @dev Creates `amount` tokens and assigns them to `account`, increasing
       * the total supply.
       *
       * Emits a {Transfer} event with `from` set to the zero address.
       *
       * Requirements:
       *
       * - `account` cannot be the zero address.
       */
      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);
      }
  
      /**
       * @dev Destroys `amount` tokens from `account`, reducing the
       * total supply.
       *
       * Emits a {Transfer} event with `to` set to the zero address.
       *
       * Requirements:
       *
       * - `account` cannot be the zero address.
       * - `account` must have at least `amount` tokens.
       */
      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);
      }
  
      /**
       * @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 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 {}
  
      /**
       * @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 {}
  }
  
  abstract 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() {
          _transferOwnership(_msgSender());
      }
  
      /**
       * @dev Returns the address of the current owner.
       */
      function owner() public view virtual 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 virtual onlyOwner {
          _transferOwnership(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 virtual onlyOwner {
          require(
              newOwner != address(0),
              "Ownable: new owner is the zero address"
          );
          _transferOwnership(newOwner);
      }
  
      /**
       * @dev Transfers ownership of the contract to a new account (`newOwner`).
       * Internal function without access restriction.
       */
      function _transferOwnership(address newOwner) internal virtual {
          address oldOwner = _owner;
          _owner = newOwner;
          emit OwnershipTransferred(oldOwner, newOwner);
      }
  }
  
  interface IDexFactory {
      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 IDexRouter {
      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 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 FUA is ERC20, Ownable {
      using SafeMath for uint256;
  
      IDexRouter private immutable dexRouter;
      address public immutable dexPair;
  
      // Swapback
      bool private swapping;
  
      bool private swapbackEnabled = false;
      uint256 private swapBackValueMin;
      uint256 private swapBackValueMax;
  
      //Anti-whale
      bool private limitsEnabled = true;
      bool private transferDelayEnabled = true;
      uint256 private maxWallet;
      uint256 private maxTx;
      mapping(address => uint256) private _holderLastTransferTimestamp; // to hold last Transfers temporarily during launch
  
      bool public tradingEnabled = false;
  
      // Fee receivers
      address private marketingWallet;
      address private projectWallet;
  
      uint256 private buyTaxTotal;
      uint256 private buyMarketingTax;
      uint256 private buyProjectTax;
  
      uint256 private sellTaxTotal;
      uint256 private sellMarketingTax;
      uint256 private sellProjectTax;
  
      uint256 private tokensForMarketing;
      uint256 private tokensForProject;
  
      /******************/
  
      // exclude from fees and max transaction amount
      mapping(address => bool) private transferTaxExempt;
      mapping(address => bool) private transferLimitExempt;
      mapping(address => bool) private automatedMarketMakerPairs;
  
      // store addresses that a automatic market maker pairs. Any transfer *to* these addresses
      // could be subject to a maximum transfer amount
  
      event UpdateUniswapV2Router(
          address indexed newAddress,
          address indexed oldAddress
      );
  
      event ExcludeFromFees(address indexed account, bool isExcluded);
      event ExcludeFromLimits(address indexed account, bool isExcluded);
      event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);
      event TradingEnabled(uint256 indexed timestamp);
      event LimitsRemoved(uint256 indexed timestamp);
      event DisabledTransferDelay(uint256 indexed timestamp);
  
      event SwapbackSettingsUpdated(
          bool enabled,
          uint256 swapBackValueMin,
          uint256 swapBackValueMax
      );
      event MaxTxUpdated(uint256 maxTx);
      event MaxWalletUpdated(uint256 maxWallet);
  
      event MarketingWalletUpdated(
          address indexed newWallet,
          address indexed oldWallet
      );
  
      event ProjectWalletUpdated(
          address indexed newWallet,
          address indexed oldWallet
      );
  
      event BuyFeeUpdated(
          uint256 buyTaxTotal,
          uint256 buyMarketingTax,
          uint256 buyProjectTax
      );
  
      event SellFeeUpdated(
          uint256 sellTaxTotal,
          uint256 sellMarketingTax,
          uint256 sellProjectTax
      );
  
      constructor() ERC20("FUA Token", "FUA") {
          IDexRouter _dexRouter = IDexRouter(
              0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
          );
  
          exemptFromLimits(address(_dexRouter), true);
          dexRouter = _dexRouter;
  
          dexPair = IDexFactory(_dexRouter.factory()).createPair(
              address(this),
              _dexRouter.WETH()
          );
          exemptFromLimits(address(dexPair), true);
          _setAutomatedMarketMakerPair(address(dexPair), true);
  
          uint256 _buyMarketingTax = 0;
          uint256 _buyProjectTax = 0;
  
          uint256 _sellMarketingTax = 3;
          uint256 _sellProjectTax = 0;
  
          uint256 _totalSupply = 177_000_000_000 * 10 ** decimals();
  
          maxTx = (_totalSupply * 10) / 1000;
          maxWallet = (_totalSupply * 10) / 1000;
  
          swapBackValueMin = (_totalSupply * 1) / 1000;
          swapBackValueMax = (_totalSupply * 2) / 100;
  
          buyMarketingTax = _buyMarketingTax;
          buyProjectTax = _buyProjectTax;
          buyTaxTotal = buyMarketingTax + buyProjectTax;
  
          sellMarketingTax = _sellMarketingTax;
          sellProjectTax = _sellProjectTax;
          sellTaxTotal = sellMarketingTax + sellProjectTax;
  
          marketingWallet = address(0xE4F138fFcd521cc754F5e166F1a0f57873fD9920);
          projectWallet = address(msg.sender);
  
          // exclude from paying fees or having max transaction amount
          exemptFromFees(msg.sender, true);
          exemptFromFees(address(this), true);
          exemptFromFees(address(0xdead), true);
          exemptFromFees(marketingWallet, true);
  
          exemptFromLimits(msg.sender, true);
          exemptFromLimits(address(this), true);
          exemptFromLimits(address(0xdead), true);
          exemptFromLimits(marketingWallet, true);
  
          transferOwnership(msg.sender);
  
          /*
              _mint is an internal function in ERC20.sol that is only called here,
              and CANNOT be called ever again
          */
          _mint(msg.sender, _totalSupply);
      }
  
      receive() external payable {}
  
      /**
       * @notice  Opens public trading for the token
       * @dev     onlyOwner.
       */
      function startTrading() external onlyOwner {
          tradingEnabled = true;
          swapbackEnabled = true;
          emit TradingEnabled(block.timestamp);
      }
  
      /**
       * @notice Removes the max wallet and max transaction limits
       * @dev onlyOwner.
       * Emits an {LimitsRemoved} event
       */
      function removeAllLimits() external onlyOwner {
          limitsEnabled = false;
          emit LimitsRemoved(block.timestamp);
      }
  
      /**
       * @notice Removes the transfer delay
       * @dev onlyOwner.
       * Emits an {DisabledTransferDelay} event
       */
      function disableTransferDelay() external onlyOwner {
          transferDelayEnabled = false;
          emit DisabledTransferDelay(block.timestamp);
      }
  
      /**
       * @notice sets if swapback is enabled and sets the minimum and maximum amounts
       * @dev onlyOwner.
       * Emits an {SwapbackSettingsUpdated} event
       * @param _enabled If swapback is enabled
       * @param _min The minimum amount of tokens the contract must have before swapping tokens for ETH. Base 10000, so 1% = 100.
       * @param _max The maximum amount of tokens the contract can swap for ETH. Base 10000, so 1% = 100.
       */
      function setSwapBackSettings(
          bool _enabled,
          uint256 _min,
          uint256 _max
      ) external onlyOwner {
          require(
              _min >= 1,
              "Swap amount cannot be lower than 0.01% total supply."
          );
          require(_max >= _min, "maximum amount cant be higher than minimum");
  
          swapbackEnabled = _enabled;
          swapBackValueMin = (totalSupply() * _min) / 10000;
          swapBackValueMax = (totalSupply() * _max) / 10000;
          emit SwapbackSettingsUpdated(_enabled, _min, _max);
      }
  
      /**
       * @notice Changes the maximum amount of tokens that can be bought or sold in a single transaction
       * @dev onlyOwner.
       * Emits an {MaxTxUpdated} event
       * @param newNum Base 1000, so 1% = 10
       */
      function setTheMaxTx(uint256 newNum) external onlyOwner {
          require(newNum >= 2, "Cannot set maxTx lower than 0.2%");
          maxTx = (newNum * totalSupply()) / 1000;
          emit MaxTxUpdated(maxTx);
      }
  
      /**
       * @notice Changes the maximum amount of tokens a wallet can hold
       * @dev onlyOwner.
       * Emits an {MaxWalletUpdated} event
       * @param newNum Base 1000, so 1% = 10
       */
      function setTheMaxWallet(uint256 newNum) external onlyOwner {
          require(newNum >= 5, "Cannot set maxWallet lower than 0.5%");
          maxWallet = (newNum * totalSupply()) / 1000;
          emit MaxWalletUpdated(maxWallet);
      }
  
      /**
       * @notice Sets if a wallet is excluded from the max wallet and tx limits
       * @dev onlyOwner.
       * Emits an {ExcludeFromLimits} event
       * @param updAds The wallet to update
       * @param isEx If the wallet is excluded or not
       */
      function exemptFromLimits(
          address updAds,
          bool isEx
      ) public onlyOwner {
          transferLimitExempt[updAds] = isEx;
          emit ExcludeFromLimits(updAds, isEx);
      }
  
      /**
       * @notice Sets the fees for buys
       * @dev onlyOwner.
       * Emits a {BuyFeeUpdated} event
       * All fees added up must be less than 100
       * @param _marketingFee The fee for the marketing wallet
       * @param _devFee The fee for the dev wallet
       */
      function setFeesBuy(
          uint256 _marketingFee,
          uint256 _devFee
      ) external onlyOwner {
          buyMarketingTax = _marketingFee;
          buyProjectTax = _devFee;
          buyTaxTotal = buyMarketingTax + buyProjectTax;
          require(buyTaxTotal <= 100, "Total buy fee cannot be higher than 100%");
          emit BuyFeeUpdated(buyTaxTotal, buyMarketingTax, buyProjectTax);
      }
  
      /**
       * @notice Sets the fees for sells
       * @dev onlyOwner.
       * Emits a {SellFeeUpdated} event
       * All fees added up must be less than 100
       * @param _marketingFee The fee for the marketing wallet
       * @param _devFee The fee for the dev wallet
       */
      function setFeesSell(
          uint256 _marketingFee,
          uint256 _devFee
      ) external onlyOwner {
          sellMarketingTax = _marketingFee;
          sellProjectTax = _devFee;
          sellTaxTotal = sellMarketingTax + sellProjectTax;
          require(
              sellTaxTotal <= 100,
              "Total sell fee cannot be higher than 100%"
          );
          emit SellFeeUpdated(sellTaxTotal, sellMarketingTax, sellProjectTax);
      }
  
      /**
       * @notice Sets if an address is excluded from fees
       * @dev onlyOwner.
       * Emits an {ExcludeFromFees} event
       * @param account The wallet to update
       * @param excluded If the wallet is excluded or not
       */
      function exemptFromFees(address account, bool excluded) public onlyOwner {
          transferTaxExempt[account] = excluded;
          emit ExcludeFromFees(account, excluded);
      }
  
      /**
       * @notice Sets an address as a new liquidity pair. You probably dont want to do this.
       * @dev onlyOwner.
       * Emits a {SetAutomatedMarketMakerPair} event
       * @param pair the address of the pair
       * @param value If the pair is a automated market maker pair or not
       */
      function setAutomatedMarketMakerPair(
          address pair,
          bool value
      ) public onlyOwner {
          require(
              pair != dexPair,
              "The pair cannot be removed from automatedMarketMakerPairs"
          );
  
          _setAutomatedMarketMakerPair(pair, value);
      }
  
      function _setAutomatedMarketMakerPair(address pair, bool value) private {
          automatedMarketMakerPairs[pair] = value;
  
          emit SetAutomatedMarketMakerPair(pair, value);
      }
  
      /**
       * @notice Sets the marketing wallet
       * @dev onlyOwner.
       * Emits an {MarketingWalletUpdated} event
       * @param newWallet The new marketing wallet
       */
      function changeMarketingWallet(address newWallet) external onlyOwner {
          emit MarketingWalletUpdated(newWallet, marketingWallet);
          marketingWallet = newWallet;
      }
  
      /**
       * @notice Sets the project wallet
       * @dev onlyOwner.
       * Emits an {ProjectWalletUpdated} event
       * @param newWallet The new dev wallet
       */
      function changeProjectWallet(address newWallet) external onlyOwner {
          emit ProjectWalletUpdated(newWallet, projectWallet);
          projectWallet = newWallet;
      }
  
      /**
       * @notice  Information about the swapback settings
       * @return  _swapbackEnabled  if swapback is enabled
       * @return  _swapBackValueMin  the minimum amount of tokens in the contract balance to trigger swapback
       * @return  _swapBackValueMax  the maximum amount of tokens in the contract balance to trigger swapback
       */
      function swapbackValues()
          external
          view
          returns (
              bool _swapbackEnabled,
              uint256 _swapBackValueMin,
              uint256 _swapBackValueMax
          )
      {
          _swapbackEnabled = swapbackEnabled;
          _swapBackValueMin = swapBackValueMin;
          _swapBackValueMax = swapBackValueMax;
      }
  
      /**
       * @notice  Information about the anti whale parameters
       * @return  _limitsEnabled  if the wallet limits are in effect
       * @return  _transferDelayEnabled  if the transfer delay is enabled
       * @return  _maxWallet  The maximum amount of tokens that can be held by a wallet
       * @return  _maxTx  The maximum amount of tokens that can be bought or sold in a single transaction
       */
      function maxTxValues()
          external
          view
          returns (
              bool _limitsEnabled,
              bool _transferDelayEnabled,
              uint256 _maxWallet,
              uint256 _maxTx
          )
      {
          _limitsEnabled = limitsEnabled;
          _transferDelayEnabled = transferDelayEnabled;
          _maxWallet = maxWallet;
          _maxTx = maxTx;
      }
  
      /**
       * @notice The wallets that receive the collected fees
       * @return _marketingWallet The wallet that receives the marketing fees
       * @return _projectWallet The wallet that receives the dev fees
       */
      function receiverwallets()
          external
          view
          returns (address _marketingWallet, address _projectWallet)
      {
          return (marketingWallet, projectWallet);
      }
  
      /**
       * @notice Fees for buys, sells, and transfers
       * @return _buyTaxTotal The total fee for buys
       * @return _buyMarketingTax The fee for buys that gets sent to marketing
       * @return _buyProjectTax The fee for buys that gets sent to dev
       * @return _sellTaxTotal The total fee for sells
       * @return _sellMarketingTax The fee for sells that gets sent to marketing
       * @return _sellProjectTax The fee for sells that gets sent to dev
       */
      function taxValues()
          external
          view
          returns (
              uint256 _buyTaxTotal,
              uint256 _buyMarketingTax,
              uint256 _buyProjectTax,
              uint256 _sellTaxTotal,
              uint256 _sellMarketingTax,
              uint256 _sellProjectTax
          )
      {
          _buyTaxTotal = buyTaxTotal;
          _buyMarketingTax = buyMarketingTax;
          _buyProjectTax = buyProjectTax;
          _sellTaxTotal = sellTaxTotal;
          _sellMarketingTax = sellMarketingTax;
          _sellProjectTax = sellProjectTax;
      }
  
      /**
       * @notice  If the wallet is excluded from fees and max transaction amount and if the wallet is a automated market maker pair
       * @param   _target  The wallet to check
       * @return  _transferTaxExempt  If the wallet is excluded from fees
       * @return  _transferLimitExempt  If the wallet is excluded from max transaction amount
       * @return  _automatedMarketMakerPairs If the wallet is a automated market maker pair
       */
      function checkMappings(
          address _target
      )
          external
          view
          returns (
              bool _transferTaxExempt,
              bool _transferLimitExempt,
              bool _automatedMarketMakerPairs
          )
      {
          _transferTaxExempt = transferTaxExempt[_target];
          _transferLimitExempt = transferLimitExempt[_target];
          _automatedMarketMakerPairs = automatedMarketMakerPairs[_target];
      }
  
      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 (limitsEnabled) {
              if (
                  from != owner() &&
                  to != owner() &&
                  to != address(0) &&
                  to != address(0xdead) &&
                  !swapping
              ) {
                  if (!tradingEnabled) {
                      require(
                          transferTaxExempt[from] || transferTaxExempt[to],
                          "_transfer:: Trading is not active."
                      );
                  }
  
                  // at launch if the transfer delay is enabled, ensure the block timestamps for purchasers is set -- during launch.
                  if (transferDelayEnabled) {
                      if (
                          to != owner() &&
                          to != address(dexRouter) &&
                          to != address(dexPair)
                      ) {
                          require(
                              _holderLastTransferTimestamp[tx.origin] <
                                  block.number,
                              "_transfer:: Transfer Delay enabled.  Only one purchase per block allowed."
                          );
                          _holderLastTransferTimestamp[tx.origin] = block.number;
                      }
                  }
  
                  //when buy
                  if (
                      automatedMarketMakerPairs[from] && !transferLimitExempt[to]
                  ) {
                      require(
                          amount <= maxTx,
                          "Buy transfer amount exceeds the maxTx."
                      );
                      require(
                          amount + balanceOf(to) <= maxWallet,
                          "Max wallet exceeded"
                      );
                  }
                  //when sell
                  else if (
                      automatedMarketMakerPairs[to] && !transferLimitExempt[from]
                  ) {
                      require(
                          amount <= maxTx,
                          "Sell transfer amount exceeds the maxTx."
                      );
                  } else if (!transferLimitExempt[to]) {
                      require(
                          amount + balanceOf(to) <= maxWallet,
                          "Max wallet exceeded"
                      );
                  }
              }
          }
  
          uint256 contractTokenBalance = balanceOf(address(this));
  
          bool canSwap = contractTokenBalance >= swapBackValueMin;
  
          if (
              canSwap &&
              swapbackEnabled &&
              !swapping &&
              !automatedMarketMakerPairs[from] &&
              !transferTaxExempt[from] &&
              !transferTaxExempt[to]
          ) {
              swapping = true;
  
              swapBack();
  
              swapping = false;
          }
  
          bool takeFee = !swapping;
  
          // if any account belongs to _isExcludedFromFee account then remove the fee
          if (transferTaxExempt[from] || transferTaxExempt[to]) {
              takeFee = false;
          }
  
          uint256 fees = 0;
          // only take fees on buys/sells, do not take on wallet transfers
          if (takeFee) {
              // on sell
              if (automatedMarketMakerPairs[to] && sellTaxTotal > 0) {
                  fees = amount.mul(sellTaxTotal).div(100);
                  tokensForProject += (fees * sellProjectTax) / sellTaxTotal;
                  tokensForMarketing += (fees * sellMarketingTax) / sellTaxTotal;
              }
              // on buy
              else if (automatedMarketMakerPairs[from] && buyTaxTotal > 0) {
                  fees = amount.mul(buyTaxTotal).div(100);
                  tokensForProject += (fees * buyProjectTax) / buyTaxTotal;
                  tokensForMarketing += (fees * buyMarketingTax) / buyTaxTotal;
              }
  
              if (fees > 0) {
                  super._transfer(from, address(this), fees);
              }
  
              amount -= fees;
          }
  
          super._transfer(from, to, amount);
      }
  
      function swapTokensForEth(uint256 tokenAmount) private {
          // generate the uniswap pair path of token -> weth
          address[] memory path = new address[](2);
          path[0] = address(this);
          path[1] = dexRouter.WETH();
  
          _approve(address(this), address(dexRouter), tokenAmount);
  
          // make the swap
          dexRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(
              tokenAmount,
              0, // accept any amount of ETH
              path,
              address(this),
              block.timestamp
          );
      }
  
      function swapBack() private {
          uint256 contractBalance = balanceOf(address(this));
          uint256 totalTokensToSwap = contractBalance;
          bool success;
  
          if (contractBalance == 0) {
              return;
          }
  
          if (contractBalance > swapBackValueMax) {
              contractBalance = swapBackValueMax;
          }
  
          uint256 amountToSwapForETH = contractBalance;
  
          uint256 initialETHBalance = address(this).balance;
  
          swapTokensForEth(amountToSwapForETH);
  
          uint256 ethBalance = address(this).balance.sub(initialETHBalance);
  
          uint256 ethForDev = ethBalance.mul(tokensForProject).div(
              totalTokensToSwap
          );
  
          tokensForMarketing = 0;
          tokensForProject = 0;
  
          (success, ) = address(projectWallet).call{value: ethForDev}("");
  
          (success, ) = address(marketingWallet).call{
              value: address(this).balance
          }("");
      }
  }