Contract Name:
HustleModelWithFees
Contract Source Code:
File 1 of 1 : HustleModelWithFees
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.sol)
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `from` to `to` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address from, address to, uint256 amount) external returns (bool);
}
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* The default value of {decimals} is 18. To change this, you should override
* this function so it returns a different value.
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
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}.
*
* 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 default value returned by this function, unless
* it's overridden.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address to, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_transfer(owner, to, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
* `transferFrom`. This is semantically equivalent to an infinite approval.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_approve(owner, spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* NOTE: Does not update the allowance if the current allowance
* is the maximum `uint256`.
*
* Requirements:
*
* - `from` and `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
* - the caller must have allowance for ``from``'s tokens of at least
* `amount`.
*/
function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, amount);
_transfer(from, to, amount);
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
address owner = _msgSender();
_approve(owner, spender, allowance(owner, spender) + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
address owner = _msgSender();
uint256 currentAllowance = allowance(owner, spender);
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(owner, spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `from` to `to`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
*/
function _transfer(address from, address to, uint256 amount) internal virtual {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(from, to, amount);
uint256 fromBalance = _balances[from];
require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[from] = fromBalance - amount;
// Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
// decrementing then incrementing.
_balances[to] += amount;
}
emit Transfer(from, to, amount);
_afterTokenTransfer(from, to, 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;
unchecked {
// Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
_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;
// Overflow not possible: amount <= accountBalance <= totalSupply.
_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 Updates `owner` s allowance for `spender` based on spent `amount`.
*
* Does not update the allowance amount in case of infinite allowance.
* Revert if not enough allowance is available.
*
* Might emit an {Approval} event.
*/
function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance != type(uint256).max) {
require(currentAllowance >= amount, "ERC20: insufficient allowance");
unchecked {
_approve(owner, spender, currentAllowance - amount);
}
}
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {}
/**
* @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 {}
}
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
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 Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
_checkOwner();
_;
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if the sender is not the owner.
*/
function _checkOwner() internal view virtual {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby disabling 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 IUniswapV2Factory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function factory() external pure returns (address);
function getAmountsOut(uint256 amountIn, address[] calldata path)
external
view
returns (uint256[] memory amounts);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
) external payable returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);
}
interface IUniswapV2Pair {
function token0() external view returns (address);
function token1() external view returns (address);
function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
}
interface HustleFactory {
function feeRecipient() external view returns (address);
}
contract HustleModelWithFees is ERC20, Ownable {
error aboveMaxTokenAmountPertransaction(uint256 amount, uint256 maxAmount);
error aboveMaxTokenAmountPerWallet(uint256 amount, uint256 maxAmount);
error belowMinTokenAmountPertransaction(uint256 amount, uint256 minAmount);
error belowMinTokenAmountPerWallet(uint256 amount, uint256 minAmount);
error tradeNotEnabled();
error restricted(address account);
error swapThresholdOutOfRange(uint256 threshold, uint256 minThreshold, uint256 maxThreshold);
error feesTooHigh(uint16 fees, uint16 maxFees);
HustleFactory public immutable hustleFactory;
uint16 public constant PERCENT_BASE = 10000;
uint16 public constant MAX_FEE = 925;
uint16 public constant HUSTLE_FEES = 75;
uint16 public ownerBuyFees;
uint16 public ownerSellFees;
bool public tradeEnabled;
bool public swapping;
IUniswapV2Router02 public immutable uniswapV2Router;
address public immutable uniswapV2Pair;
uint256 public swapThreshold;
uint256 public maxTokenAmountPertransaction;
uint256 public maxTokenAmountPerWallet;
uint256 public collectedFeesHustle;
mapping(address => bool) public isUnrestricted;
receive() external payable {}
constructor(
string memory _name,
string memory _symbol,
uint256 _totalSupply,
address ownerAddress,
address _routerAddress,
uint16 _ownerBuyFees,
uint16 _ownerSellFees,
bool _tradeEnabled
) ERC20(_name, _symbol) {
if (_ownerBuyFees > MAX_FEE || _ownerSellFees > MAX_FEE) {
revert feesTooHigh(_ownerBuyFees, MAX_FEE);
}
hustleFactory = HustleFactory(msg.sender);
uniswapV2Router = IUniswapV2Router02(_routerAddress);
ownerBuyFees = _ownerBuyFees;
ownerSellFees = _ownerSellFees;
_transferOwnership(ownerAddress);
_approve(address(this), address(uniswapV2Router), type(uint256).max);
uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this), uniswapV2Router.WETH());
isUnrestricted[ownerAddress] = true;
isUnrestricted[address(this)] = true;
isUnrestricted[msg.sender] = true;
_mint(msg.sender, _totalSupply * 10 ** decimals());
tradeEnabled = _tradeEnabled;
swapThreshold = totalSupply() / 1000;
maxTokenAmountPertransaction = totalSupply() / 50;
maxTokenAmountPerWallet = totalSupply() / 50;
}
function setIsUnrestricted(address account, bool isUnrestricted_) external onlyOwner {
if (account == address(this) || account == address(uniswapV2Pair)) {
revert restricted(account);
}
isUnrestricted[account] = isUnrestricted_;
}
function setOwnerBuyFees(uint16 _ownerBuyFees) external onlyOwner {
if (_ownerBuyFees > MAX_FEE) revert feesTooHigh(_ownerBuyFees, MAX_FEE);
ownerBuyFees = _ownerBuyFees;
}
function setOwnerSellFees(uint16 _ownerSellFees) external onlyOwner {
if (_ownerSellFees > MAX_FEE) {
revert feesTooHigh(_ownerSellFees, MAX_FEE);
}
ownerSellFees = _ownerSellFees;
}
function setSwapThreshold(uint256 _swapThreshold) external onlyOwner {
if (_swapThreshold < totalSupply() / 100000 || _swapThreshold > totalSupply() / 100) {
revert swapThresholdOutOfRange(_swapThreshold, totalSupply() / 100000, totalSupply() / 100);
}
swapThreshold = _swapThreshold;
}
function setMaxTokenAmountPertransaction(uint256 _maxTokenAmountPertransaction) external onlyOwner {
if (_maxTokenAmountPertransaction < totalSupply() / 1000) {
revert belowMinTokenAmountPertransaction(_maxTokenAmountPertransaction, totalSupply() / 1000);
}
maxTokenAmountPertransaction = _maxTokenAmountPertransaction;
}
function setMaxTokenAmountPerWallet(uint256 _maxTokenAmountPerWallet) external onlyOwner {
if (_maxTokenAmountPerWallet < totalSupply() / 1000) {
revert belowMinTokenAmountPerWallet(_maxTokenAmountPerWallet, totalSupply() / 1000);
}
maxTokenAmountPerWallet = _maxTokenAmountPerWallet;
}
function enableTrade() external onlyOwner {
tradeEnabled = true;
}
function transferOwnership(address newOwner) public override onlyOwner {
if (newOwner == uniswapV2Pair) revert restricted(newOwner);
_transferOwnership(newOwner);
isUnrestricted[newOwner] = true;
}
function _transfer(address from, address to, uint256 amount) internal override {
if (_isUnrestricted(from, to)) {
super._transfer(from, to, amount);
return;
}
if (!tradeEnabled) revert tradeNotEnabled();
bool buying = from == uniswapV2Pair && to != address(uniswapV2Router);
bool selling = from != address(uniswapV2Router) && to == uniswapV2Pair;
if (!buying && !selling) {
_checkTransferAmounts(to, amount);
super._transfer(from, to, amount);
return;
}
if (msg.sender != uniswapV2Pair && !swapping && balanceOf(address(this)) >= swapThreshold) _distributeFees();
uint16 ownerFees = buying ? ownerBuyFees : selling ? ownerSellFees : 0;
uint256 hustleCollects = (amount * HUSTLE_FEES) / PERCENT_BASE;
collectedFeesHustle += hustleCollects;
uint256 totalFees = (amount * ownerFees) / PERCENT_BASE + hustleCollects;
uint256 amountAfterFees = amount - totalFees;
_checkTransferAmounts(to, amountAfterFees);
if (totalFees > 0) super._transfer(from, address(this), totalFees);
super._transfer(from, to, amountAfterFees);
}
function _checkTransferAmounts(address to, uint256 amount) internal view {
if (amount > maxTokenAmountPertransaction) {
revert aboveMaxTokenAmountPertransaction(amount, maxTokenAmountPertransaction);
}
if (to == uniswapV2Pair) return;
if (balanceOf(to) + amount > maxTokenAmountPerWallet) {
revert aboveMaxTokenAmountPerWallet(amount, maxTokenAmountPerWallet);
}
}
function _isUnrestricted(address from, address to) internal view returns (bool) {
return
tx.origin == owner() || isUnrestricted[msg.sender] || isUnrestricted[from] || isUnrestricted[to] || swapping;
}
function calculateAmountOutEth(uint256 amount) public view returns (uint256) {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
try uniswapV2Router.getAmountsOut(amount, path) returns (uint256[] memory amountsOut) {
return amountsOut[1];
} catch {
return 0;
}
}
function _swapBalanceToETHAndSend(uint256 amountOut) private {
swapping = true;
uint256 amountIn = balanceOf(address(this));
uint256 hustleSharePercent = (collectedFeesHustle * PERCENT_BASE) / amountIn;
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
uint256 amountOutMin = (amountOut * 95) / 100;
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
amountIn, amountOutMin, path, address(this), block.timestamp
);
uint256 amountETH = address(this).balance;
uint256 hustleShare = (amountETH * hustleSharePercent) / PERCENT_BASE;
collectedFeesHustle = 0;
(bool success,) = payable(hustleFactory.feeRecipient()).call{value: hustleShare}("");
require(success, "Transfer failed.");
(success,) = payable(owner()).call{value: address(this).balance, gas: 10000}("");
if (!success) {
(success,) = payable(hustleFactory.feeRecipient()).call{value: address(this).balance}("");
require(success, "Transfer failed.");
}
// make low level call to avoid revert if recipient is a contract with no payable fallback
// if failure occurs, the funds will be sent to hustleFactory.feeRecipient()
swapping = false;
}
function _distributeFees() private {
uint256 amountOutEth = calculateAmountOutEth(balanceOf(address(this)));
_swapBalanceToETHAndSend(amountOutEth);
}
}