// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

string constant NAME = "Galaxy Fox";

string constant SYMBOL = "GFOX";

uint256 constant INITIAL_SUPPLY = 5000000000 * 10 ** 18;

uint16 constant BUY_TAX_LIQUIDIY = 200;

// 2%
uint16 constant BUY_TAX_MARKETING = 200;

// 2%
uint16 constant BUY_TAX_ECOSYSTEM = 200;

// 2%
uint16 constant SELL_TAX_LIQUIDIY = 200;

// 2%
uint16 constant SELL_TAX_MARKETING = 200;

// 2%
uint16 constant SELL_TAX_ECOSYSTEM = 200;

// 2%
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 value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the value of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves a `value` amount of 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 value) 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 a `value` amount of tokens 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 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` 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 value
    ) external returns (bool);
}

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;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

interface IERC20Errors {
    /**
     * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     * @param balance Current balance for the interacting account.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientBalance(
        address sender,
        uint256 balance,
        uint256 needed
    );

    /**
     * @dev Indicates a failure with the token `sender`. Used in transfers.
     * @param sender Address whose tokens are being transferred.
     */
    error ERC20InvalidSender(address sender);

    /**
     * @dev Indicates a failure with the token `receiver`. Used in transfers.
     * @param receiver Address to which tokens are being transferred.
     */
    error ERC20InvalidReceiver(address receiver);

    /**
     * @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     * @param allowance Amount of tokens a `spender` is allowed to operate with.
     * @param needed Minimum amount required to perform a transfer.
     */
    error ERC20InsufficientAllowance(
        address spender,
        uint256 allowance,
        uint256 needed
    );

    /**
     * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
     * @param approver Address initiating an approval operation.
     */
    error ERC20InvalidApprover(address approver);

    /**
     * @dev Indicates a failure with the `spender` to be approved. Used in approvals.
     * @param spender Address that may be allowed to operate on tokens without being their owner.
     */
    error ERC20InvalidSpender(address spender);
}

//
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/ERC20.sol)
/**
 * @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}.
 *
 * 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.
 */
abstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors {
    mapping(address account => uint256) private _balances;

    mapping(address account => mapping(address spender => 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 returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual 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 returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual 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 `value`.
     */
    function transfer(address to, uint256 value) public virtual returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, value);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(
        address owner,
        address spender
    ) public view virtual returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `value` 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 value
    ) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, value);
        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 `value`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `value`.
     */
    function transferFrom(
        address from,
        address to,
        uint256 value
    ) public virtual returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, value);
        _transfer(from, to, value);
        return true;
    }

    /**
     * @dev Moves a `value` 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.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _transfer(address from, address to, uint256 value) internal {
        if (from == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        if (to == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(from, to, value);
    }

    /**
     * @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from`
     * (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding
     * this function.
     *
     * Emits a {Transfer} event.
     */
    function _update(address from, address to, uint256 value) internal virtual {
        if (from == address(0)) {
            // Overflow check required: The rest of the code assumes that totalSupply never overflows
            _totalSupply += value;
        } else {
            uint256 fromBalance = _balances[from];
            if (fromBalance < value) {
                revert ERC20InsufficientBalance(from, fromBalance, value);
            }
            unchecked {
                // Overflow not possible: value <= fromBalance <= totalSupply.
                _balances[from] = fromBalance - value;
            }
        }

        if (to == address(0)) {
            unchecked {
                // Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply.
                _totalSupply -= value;
            }
        } else {
            unchecked {
                // Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256.
                _balances[to] += value;
            }
        }

        emit Transfer(from, to, value);
    }

    /**
     * @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0).
     * Relies on the `_update` mechanism
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _mint(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(address(0), account, value);
    }

    /**
     * @dev Destroys a `value` amount of tokens from `account`, lowering the total supply.
     * Relies on the `_update` mechanism.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead
     */
    function _burn(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        _update(account, address(0), value);
    }

    /**
     * @dev Sets `value` 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.
     *
     * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.
     */
    function _approve(address owner, address spender, uint256 value) internal {
        _approve(owner, spender, value, true);
    }

    /**
     * @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event.
     *
     * By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by
     * `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any
     * `Approval` event during `transferFrom` operations.
     *
     * Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to
     * true using the following override:
     * ```
     * function _approve(address owner, address spender, uint256 value, bool) internal virtual override {
     *     super._approve(owner, spender, value, true);
     * }
     * ```
     *
     * Requirements are the same as {_approve}.
     */
    function _approve(
        address owner,
        address spender,
        uint256 value,
        bool emitEvent
    ) internal virtual {
        if (owner == address(0)) {
            revert ERC20InvalidApprover(address(0));
        }
        if (spender == address(0)) {
            revert ERC20InvalidSpender(address(0));
        }
        _allowances[owner][spender] = value;
        if (emitEvent) {
            emit Approval(owner, spender, value);
        }
    }

    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `value`.
     *
     * Does not update the allowance value in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Does not emit an {Approval} event.
     */
    function _spendAllowance(
        address owner,
        address spender,
        uint256 value
    ) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            if (currentAllowance < value) {
                revert ERC20InsufficientAllowance(
                    spender,
                    currentAllowance,
                    value
                );
            }
            unchecked {
                _approve(owner, spender, currentAllowance - value, false);
            }
        }
    }
}

interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     *
     * CAUTION: See Security Considerations above.
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

library Address {
    /**
     * @dev The ETH balance of the account is not enough to perform the operation.
     */
    error AddressInsufficientBalance(address account);

    /**
     * @dev There's no code at `target` (it is not a contract).
     */
    error AddressEmptyCode(address target);

    /**
     * @dev A call to an address target failed. The target may have reverted.
     */
    error FailedInnerCall();

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        if (address(this).balance < amount) {
            revert AddressInsufficientBalance(address(this));
        }

        (bool success, ) = recipient.call{value: amount}("");
        if (!success) {
            revert FailedInnerCall();
        }
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason or custom error, it is bubbled
     * up by this function (like regular Solidity function calls). However, if
     * the call reverted with no returned reason, this function reverts with a
     * {FailedInnerCall} error.
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     */
    function functionCall(
        address target,
        bytes memory data
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        if (address(this).balance < value) {
            revert AddressInsufficientBalance(address(this));
        }
        (bool success, bytes memory returndata) = target.call{value: value}(
            data
        );
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     */
    function functionStaticCall(
        address target,
        bytes memory data
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     */
    function functionDelegateCall(
        address target,
        bytes memory data
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target
     * was not a contract or bubbling up the revert reason (falling back to {FailedInnerCall}) in case of an
     * unsuccessful call.
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata
    ) internal view returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            // only check if target is a contract if the call was successful and the return data is empty
            // otherwise we already know that it was a contract
            if (returndata.length == 0 && target.code.length == 0) {
                revert AddressEmptyCode(target);
            }
            return returndata;
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the
     * revert reason or with a default {FailedInnerCall} error.
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata
    ) internal pure returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            return returndata;
        }
    }

    /**
     * @dev Reverts with returndata if present. Otherwise reverts with {FailedInnerCall}.
     */
    function _revert(bytes memory returndata) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert FailedInnerCall();
        }
    }
}

//
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/utils/SafeERC20.sol)
/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    /**
     * @dev An operation with an ERC20 token failed.
     */
    error SafeERC20FailedOperation(address token);

    /**
     * @dev Indicates a failed `decreaseAllowance` request.
     */
    error SafeERC20FailedDecreaseAllowance(
        address spender,
        uint256 currentAllowance,
        uint256 requestedDecrease
    );

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value)));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(
            token,
            abi.encodeCall(token.transferFrom, (from, to, value))
        );
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        forceApprove(token, spender, oldAllowance + value);
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
     * value, non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 requestedDecrease
    ) internal {
        unchecked {
            uint256 currentAllowance = token.allowance(address(this), spender);
            if (currentAllowance < requestedDecrease) {
                revert SafeERC20FailedDecreaseAllowance(
                    spender,
                    currentAllowance,
                    requestedDecrease
                );
            }
            forceApprove(token, spender, currentAllowance - requestedDecrease);
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     */
    function forceApprove(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        bytes memory approvalCall = abi.encodeCall(
            token.approve,
            (spender, value)
        );

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(
                token,
                abi.encodeCall(token.approve, (spender, 0))
            );
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data);
        if (returndata.length != 0 && !abi.decode(returndata, (bool))) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(
        IERC20 token,
        bytes memory data
    ) private returns (bool) {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

        (bool success, bytes memory returndata) = address(token).call(data);
        return
            success &&
            (returndata.length == 0 || abi.decode(returndata, (bool))) &&
            address(token).code.length > 0;
    }
}

//
// OpenZeppelin Contracts (last updated v5.0.0) (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.
 *
 * The initial owner is set to the address provided by the deployer. 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;

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

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

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    /**
     * @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 {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

    /**
     * @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 {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _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 IUniswapV2Router01 {
    function factory() external pure returns (address);

    function WETH() external pure returns (address);

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

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

    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB);

    function removeLiquidityETH(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountToken, uint amountETH);

    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint amountA, uint amountB);

    function removeLiquidityETHWithPermit(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint amountToken, uint amountETH);

    function swapExactTokensForTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);

    function swapTokensForExactTokens(
        uint amountOut,
        uint amountInMax,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);

    function swapExactETHForTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable returns (uint[] memory amounts);

    function swapTokensForExactETH(
        uint amountOut,
        uint amountInMax,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);

    function swapExactTokensForETH(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);

    function swapETHForExactTokens(
        uint amountOut,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable returns (uint[] memory amounts);

    function quote(
        uint amountA,
        uint reserveA,
        uint reserveB
    ) external pure returns (uint amountB);

    function getAmountOut(
        uint amountIn,
        uint reserveIn,
        uint reserveOut
    ) external pure returns (uint amountOut);

    function getAmountIn(
        uint amountOut,
        uint reserveIn,
        uint reserveOut
    ) external pure returns (uint amountIn);

    function getAmountsOut(
        uint amountIn,
        address[] calldata path
    ) external view returns (uint[] memory amounts);

    function getAmountsIn(
        uint amountOut,
        address[] calldata path
    ) external view returns (uint[] memory amounts);
}

interface IUniswapV2Router02 is IUniswapV2Router01 {
    function removeLiquidityETHSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountETH);

    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external returns (uint amountETH);

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

    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable;

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

interface IUniswapV2Pair {
    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint 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 (uint);

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

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

    function approve(address spender, uint value) external returns (bool);

    function transfer(address to, uint value) external returns (bool);

    function transferFrom(
        address from,
        address to,
        uint 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 (uint);

    function permit(
        address owner,
        address spender,
        uint value,
        uint deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    event Mint(address indexed sender, uint amount0, uint amount1);
    event Burn(
        address indexed sender,
        uint amount0,
        uint amount1,
        address indexed to
    );
    event Swap(
        address indexed sender,
        uint amount0In,
        uint amount1In,
        uint amount0Out,
        uint amount1Out,
        address indexed to
    );
    event Sync(uint112 reserve0, uint112 reserve1);

    function MINIMUM_LIQUIDITY() external pure returns (uint);

    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 (uint);

    function price1CumulativeLast() external view returns (uint);

    function kLast() external view returns (uint);

    function mint(address to) external returns (uint liquidity);

    function burn(address to) external returns (uint amount0, uint amount1);

    function swap(
        uint amount0Out,
        uint amount1Out,
        address to,
        bytes calldata data
    ) external;

    function skim(address to) external;

    function sync() external;

    function initialize(address, address) external;
}

//
// Uncomment this line to use console.log
// import "hardhat/console.sol";

// 5%
uint256 constant TAX_BASE = 10000;

uint256 constant MAX_TAX = 2000;

// 20%
uint256 constant DAY = 1 days;

struct Tax {
    uint16 liquidity;
    uint16 marketing;
    uint16 ecosystem;
}

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

contract GalaxyFox is ERC20, Ownable {
    using SafeERC20 for IERC20;

    Tax public buyTax =
        Tax(BUY_TAX_LIQUIDIY, BUY_TAX_MARKETING, BUY_TAX_ECOSYSTEM); // 6 bytes
    Tax public sellTax =
        Tax(SELL_TAX_LIQUIDIY, SELL_TAX_MARKETING, SELL_TAX_ECOSYSTEM); // 6 bytes

    address payable public liquidityHolder; // 20 bytes
    address payable public marketingHolder; // 20 bytes
    address payable public ecosystemHolder; // 20 bytes
    bool public taxEnabled = false;

    IUniFactory public immutable uniFactory; // 20 bytes
    IUniswapV2Router02 public immutable uniRouter; // 20 bytes
    address public immutable weth; // 20 bytes
    address public immutable uniPair; // 20 bytes

    mapping(address => bool) public isExcludedFromFee;

    mapping(address => bool) public isPair;

    mapping(address => mapping(uint256 => uint256)) public volume;
    mapping(address => bool) public isExcludedFromDailyVolume;

    uint256 public maxDailyVolume = INITIAL_SUPPLY / 1000;

    uint256 public liquidityReserves;
    uint256 public miniBeforeLiquify;

    event TaxEnabled(bool enabled);
    event ExeededFromFee(address account, bool excluded);
    event Pair(address pair, bool isPair);
    event EcosystemHolder(address oldHolder, address holder);
    event MarketingHolder(address oldHolder, address holder);
    event LiquidityHolder(address oldHolder, address holder);
    event SellTaxChanged(uint16 liquidity, uint16 marketing, uint16 ecosystem);
    event BuyTaxChanged(uint16 liquidity, uint16 marketing, uint16 ecosystem);
    event ExcludedFromDailyVolume(address account, bool excluded);
    event MaxDailyVolumeChanged(uint256 maxDailyVolume);
    event MiniBeforeLiquifyChanged(uint256 miniBeforeLiquifyArg);

    constructor(
        // to allow for easy testing/deploy on behalf of someone else
        address _ownerArg,
        address payable _ecosystemHolder,
        address payable _marketingHolder,
        address payable _liquidityHolder,
        IUniswapV2Router02 _uniswapV2Router,
        IUniFactory _uniswapV2Factory
    ) ERC20(NAME, SYMBOL) Ownable(_ownerArg) {
        _mint(_ownerArg, INITIAL_SUPPLY);

        require(
            _ecosystemHolder != address(0),
            "GalaxyFox: ecosystem holder is the zero address"
        );
        ecosystemHolder = _ecosystemHolder;
        require(
            _marketingHolder != address(0),
            "GalaxyFox: marketing holder is the zero address"
        );
        marketingHolder = _marketingHolder;
        require(
            _liquidityHolder != address(0),
            "GalaxyFox: liquidity holder is the zero address"
        );
        liquidityHolder = _liquidityHolder;

        uniRouter = _uniswapV2Router;
        uniFactory = _uniswapV2Factory;

        weth = _uniswapV2Router.WETH();

        // Create a uniswap pair for this new token
        uniPair = _uniswapV2Factory.createPair(address(this), weth);

        // approve token transfer to cover all future transfereFrom calls
        _approve(address(this), address(_uniswapV2Router), type(uint256).max);

        isPair[uniPair] = true;

        isExcludedFromFee[address(this)] = true;

        isExcludedFromFee[_ownerArg] = true;

        isExcludedFromDailyVolume[_ownerArg] = true;

        isExcludedFromDailyVolume[uniPair] = true;

        isExcludedFromDailyVolume[address(this)] = true;
    }

    receive() external payable {
        // only receive from router
        require(msg.sender == address(uniRouter), "Invalid sender");
    }

    /**
     * @notice Transfers tokens to a recipient
     * @param recipient address to send the tokens to
     * @param amount  amount of tokens to send
     */
    function transfer(
        address recipient,
        uint256 amount
    ) public virtual override returns (bool) {
        _customTransfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @notice Transfers tokens from a sender to a recipient (requires approval)
     * @param sender address to send the tokens from
     * @param recipient address to send the tokens to
     * @param amount  amount of tokens to send
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public virtual override returns (bool) {
        uint256 allowance = allowance(sender, _msgSender());
        require(amount <= allowance, "Transfer amount exceeds allowance");

        // overflow is checked above
        unchecked {
            // decrease allowance if not max approved
            if (allowance < type(uint256).max)
                _approve(sender, _msgSender(), allowance - amount, true);
        }

        _customTransfer(sender, recipient, amount);

        return true;
    }

    function _customTransfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal {
        if (sender != uniPair) _liquify();

        if (
            !taxEnabled ||
            isExcludedFromFee[sender] ||
            isExcludedFromFee[recipient] ||
            (!isPair[recipient] && !isPair[sender]) ||
            inswap == 1
        ) {
            _transfer(sender, recipient, amount);
        } else {
            Tax memory tax = isPair[recipient] ? buyTax : sellTax;

            // buy
            uint256 marketingTax = (amount * tax.marketing) / TAX_BASE;
            uint256 ecosystemTax = (amount * tax.ecosystem) / TAX_BASE;
            uint256 liquidityTax = (amount * tax.liquidity) / TAX_BASE;

            if (ecosystemTax > 0)
                _transfer(sender, ecosystemHolder, ecosystemTax);
            if (marketingTax > 0)
                _transfer(sender, marketingHolder, marketingTax);

            _transfer(
                sender,
                recipient,
                amount - marketingTax - ecosystemTax - liquidityTax
            );

            if (liquidityTax > 0) {
                liquidityReserves += liquidityTax;
                _transfer(sender, address(this), liquidityTax);
            }
        }

        // DAY is constant so no division by 0
        // volume can't overflow if we reached this point (balance check)
        unchecked {
            // loss of precision is wanted here
            uint256 period = block.timestamp / DAY;

            volume[sender][period] += amount;
            require(
                volume[sender][period] <= maxDailyVolume ||
                    isExcludedFromDailyVolume[sender],
                "GalaxyFox: max daily volume exceeded"
            );
        }
    }

    /**
     * @notice Enable or disable taxes
     * @param taxEnabledArg true to enable tax, false to disable
     */
    function setTaxEnabled(bool taxEnabledArg) public onlyOwner {
        require(taxEnabled != taxEnabledArg, "GalaxyFox: already set");
        taxEnabled = taxEnabledArg;

        emit TaxEnabled(taxEnabledArg);
    }

    /**
     * @notice Sets the minimum amount of tokens that must be in the contract before liquifying
     * @param miniBeforeLiquifyArg  The minimum amount of tokens that must be in the contract before liquifying
     */
    function setMiniBeforeLiquify(
        uint256 miniBeforeLiquifyArg
    ) public onlyOwner {
        require(
            miniBeforeLiquifyArg != miniBeforeLiquify,
            "GalaxyFox: already set"
        );
        miniBeforeLiquify = miniBeforeLiquifyArg;

        emit MiniBeforeLiquifyChanged(miniBeforeLiquifyArg);
    }

    /**
     * @notice sets whether an address is excluded  from fees or not
     * @param account The address to exclude/include from fees
     * @param excluded  true to exclude, false to include
     */
    function setExcludedFromFee(
        address account,
        bool excluded
    ) public onlyOwner {
        require(
            isExcludedFromFee[account] != excluded,
            "GalaxyFox: already set"
        );
        isExcludedFromFee[account] = excluded;

        emit ExeededFromFee(account, excluded);
    }

    /**
     *  @notice declare if an address is an lp pair or not
     * @param pair address of the LP Pool
     * @param isPairArg  true if the address is a pair, false otherwise
     */
    function setPair(address pair, bool isPairArg) public onlyOwner {
        require(isPair[pair] != isPairArg, "GalaxyFox: already set");
        isPair[pair] = isPairArg;

        emit Pair(pair, isPairArg);
    }

    /**
     * @dev sets the ecosystem holder address
     * @param _ecosystemHolder The address of the ecosystem holder
     */
    function setEcosystemHolder(
        address payable _ecosystemHolder
    ) public onlyOwner {
        require(_ecosystemHolder != ecosystemHolder, "GalaxyFox: already set");
        require(_ecosystemHolder != address(0), "GalaxyFox: zero address");
        ecosystemHolder = _ecosystemHolder;

        emit EcosystemHolder(ecosystemHolder, _ecosystemHolder);
    }

    /**
     * @dev Sets the marketing holder address
     * @param _marketingHolder The address of the marketing holder
     */
    function setMarketingHolder(
        address payable _marketingHolder
    ) public onlyOwner {
        require(_marketingHolder != marketingHolder, "GalaxyFox: already set");
        require(_marketingHolder != address(0), "GalaxyFox: zero address");
        marketingHolder = _marketingHolder;

        emit MarketingHolder(marketingHolder, _marketingHolder);
    }

    /**
     * @dev Sets the liquidity holder address
     * @param _liquidityHolder The address of the liquidity holder
     */
    function setLiquidityHolder(
        address payable _liquidityHolder
    ) public onlyOwner {
        require(_liquidityHolder != liquidityHolder, "GalaxyFox: already set");
        require(_liquidityHolder != address(0), "GalaxyFox: zero address");
        liquidityHolder = _liquidityHolder;
        emit LiquidityHolder(liquidityHolder, _liquidityHolder);
    }

    /**
     * @dev Changes the tax on buys
     * @param _liquidity liquidity tax in basis points
     * @param _marketing marketing tax in basis points
     * @param _ecosystem ecosystem tax in basis points
     */
    function setSellTax(
        uint16 _liquidity,
        uint16 _marketing,
        uint16 _ecosystem
    ) public onlyOwner {
        require(
            _liquidity + _marketing + _ecosystem <= MAX_TAX,
            "GalaxyFox: tax too high"
        );
        sellTax = Tax(_liquidity, _marketing, _ecosystem);

        emit SellTaxChanged(_liquidity, _marketing, _ecosystem);
    }

    /**
     * @dev Changes the tax on sells
     * @param _liquidity liquidity tax in basis points
     * @param _marketing marketing tax in basis points
     * @param _ecosystem ecosystem tax in basis points
     */
    function setBuyTax(
        uint16 _liquidity,
        uint16 _marketing,
        uint16 _ecosystem
    ) public onlyOwner {
        require(
            _liquidity + _marketing + _ecosystem <= MAX_TAX,
            "GalaxyFox: tax too high"
        );
        buyTax = Tax(_liquidity, _marketing, _ecosystem);

        emit BuyTaxChanged(_liquidity, _marketing, _ecosystem);
    }

    /**
     * @notice Burns tokens from the caller
     * @param amount amount of tokens to burn
     */
    function burn(uint256 amount) public {
        _burn(msg.sender, amount);
    }

    /**
     * @notice Recovers lost tokens or ETH, doesn't include the liquidity reserves
     * @param tokenAddress address of the token to recover
     */
    function recoverLostTokens(address tokenAddress) public onlyOwner {
        if (tokenAddress != address(this)) {
            uint256 tokenAmount = tokenAddress != address(0)
                ? IERC20(tokenAddress).balanceOf(address(this))
                : address(this).balance;

            if (tokenAmount > 0 && tokenAddress != address(0)) {
                IERC20(tokenAddress).safeTransfer(msg.sender, tokenAmount);
            } else if (tokenAmount > 0) {
                (bool success, ) = payable(msg.sender).call{value: tokenAmount}(
                    ""
                );
                require(success, "Failed to send Ether");
            }
        } else {
            uint256 tokenAmount = balanceOf(address(this)) - liquidityReserves;
            _transfer(address(this), msg.sender, tokenAmount);
        }
    }

    /**
     * @notice Sets whether an address is excluded from maxDailyVolume or not
     * @param account account to be included/excluded from maxDailyVolume
     * @param excluded true to exclude, false to include
     */
    function setExludedFromDailyVolume(
        address account,
        bool excluded
    ) public onlyOwner {
        require(
            isExcludedFromDailyVolume[account] != excluded,
            "GalaxyFox: already set"
        );
        isExcludedFromDailyVolume[account] = excluded;

        emit ExcludedFromDailyVolume(account, excluded);
    }

    /**
     * @notice Sets the max daily volume max is 0.1% of the total supply
     * @param maxDailyVolumeArg The new max daily volume
     */
    function setMaxDailyVolume(uint256 maxDailyVolumeArg) public onlyOwner {
        require(maxDailyVolumeArg != maxDailyVolume, "GalaxyFox: already set");
        // require that the max daily volume is at least 0.1% of the total supply
        require(
            maxDailyVolumeArg >= totalSupply() / 1000,
            "GalaxyFox: max daily volume too low"
        );
        maxDailyVolume = maxDailyVolumeArg;

        emit MaxDailyVolumeChanged(maxDailyVolumeArg);
    }

    // using uint256 is cheaper than using bool
    // because there will be no extra work to read it
    // sunce when used we always return it back to 0
    // it will trigger a refund
    uint256 inswap = 0;

    /**
     * @notice creates lp from the liquidity reserves
     */
    function liquify() external onlyOwner {
        _liquify();
    }

    function _liquify() private {
        if (inswap == 1) return;

        if (liquidityReserves > miniBeforeLiquify) {
            inswap = 1;
            // get reserves from pair
            (uint256 reserves0, uint256 reserves1, ) = IUniswapV2Pair(uniPair)
                .getReserves();

            // Check Uniswap library sortTokens (token0 < token1)
            uint256 tokenReserves = address(this) < weth
                ? reserves0
                : reserves1;

            // swap capped at 10% of the reserves which is tecnically 5% because we only swap half
            uint256 maxToSwap = (tokenReserves * 10) / 100;

            uint256 toswap = liquidityReserves > maxToSwap
                ? maxToSwap
                : liquidityReserves;

            uint256 half = toswap / 2;
            // avoids precision loss
            uint256 otherHalf = toswap - half;

            _swapTokensForEth(half);

            uint256 newBalance = address(this).balance;

            _addLiquidity(otherHalf, newBalance);

            liquidityReserves -= toswap;
            inswap = 0;
        }
    }

    function _swapTokensForEth(uint256 tokenAmount) internal {
        // generate the uniswap pair path of token -> weth
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = weth;

        // make the swap safely, do not revert if swap fails
        try
            uniRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(
                tokenAmount,
                0, // accept any amount of ETH
                path,
                address(this),
                block.timestamp
            )
        {} catch {}
    }

    function _addLiquidity(uint256 tokenAmount, uint256 ethAmount) internal {
        // do not revert if addlp fails
        try
            uniRouter.addLiquidityETH{value: ethAmount}(
                address(this),
                tokenAmount,
                0,
                0,
                liquidityHolder,
                block.timestamp
            )
        {} catch {}
    }
}