// File: @openzeppelin/contracts/access/Ownable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.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 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);
    }
}

// File: @openzeppelin/contracts/token/ERC20/extensions/draft-IERC20Permit.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
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].
     */
    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);
}

// File: @openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC20.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);
}

// File: @openzeppelin/contracts/token/ERC20/IERC20.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @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);
}

// File: @openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/draft-IERC20Permit.sol";
import "../../../utils/Address.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;

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @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, "SafeERC20: low-level call failed");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// File: @openzeppelin/contracts/utils/Address.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @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://diligence.consensys.net/posts/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/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @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, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * 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.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @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`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) 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(errorMessage);
        }
    }
}

// File: @openzeppelin/contracts/utils/Context.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @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;
    }
}

// File: @uniswap/v2-core/contracts/interfaces/IUniswapV2Factory.sol



pragma solidity >=0.5.0;

interface IUniswapV2Factory {
    event PairCreated(address indexed token0, address indexed token1, address pair, uint);

    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(uint) external view returns (address pair);
    function allPairsLength() external view returns (uint);

    function createPair(address tokenA, address tokenB) external returns (address pair);

    function setFeeTo(address) external;
    function setFeeToSetter(address) external;
}

// File: @uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router01.sol



pragma solidity >=0.6.2;

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);
}

// File: @uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol



pragma solidity >=0.6.2;

import './IUniswapV2Router01.sol';

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;
}

// File: contracts/interfaces/IBurnHandler.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

interface IBurnHandler {
    function burn(uint256 _amountOutMin) external;

    function rescue(address _token) external;

    function tokenWhitelist(address _addr) external view returns (bool);
}

// File: contracts/interfaces/IWETH.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

interface IWETH {
    function deposit() external payable;

    function withdraw(uint256) external;
}

// File: contracts/SwapToBurnBase.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import "@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol";
import "@uniswap/v2-core/contracts/interfaces/IUniswapV2Factory.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "./interfaces/IWETH.sol";
import "./interfaces/IBurnHandler.sol";

abstract contract SwapToBurnBase is Ownable {
    using SafeERC20 for IERC20;
    address internal constant nullAddress = 0x000000000000000000000000000000000000dEaD;
    address internal immutable WETH;
    address public immutable burnHandlerAddress;
    uint256 public immutable burnFee;
    uint256 public immutable teamFee;
    address public teamWalletAddress;

    modifier validate(address[] memory path) {
        require(path.length >= 2, "INVALID_PATH");
        _;
    }

    constructor(
        uint256 _burnFee,
        uint256 _teamFee,
        address _burnHandler,
        address _teamWallet
    ) {
        WETH = UNISWAP_V2_ROUTER().WETH();
        burnFee = _burnFee;
        teamFee = _teamFee;
        burnHandlerAddress = _burnHandler;
        teamWalletAddress = _teamWallet;
    }

    //need to override here
    function LUFFY() public pure virtual returns (address);

    function UNISWAP_V2_ROUTER() internal pure virtual returns (IUniswapV2Router02);

    function UNISWAP_FACTORY() internal pure virtual returns (IUniswapV2Factory);

    function burn(uint256 _burnAmount, address[] memory _path) internal {
        address tokenIn = _path[0];
        if (tokenIn == LUFFY()) {
            //if token is LUFFY TOKEN just burn it
            IERC20(tokenIn).safeTransfer(nullAddress, _burnAmount);
        } else {
            if (tokenIn == WETH) {
                _safeTransfer(burnHandlerAddress, _burnAmount);
            } else {
                address[] memory wethPath = _getWETHPath(_path);
                if (wethPath.length >= 2) {
                    // buy ETH and send to fee-handler contract to buy-back and burn LUFFY
                    UNISWAP_V2_ROUTER().swapExactTokensForETHSupportingFeeOnTransferTokens(
                        _burnAmount,
                        0,
                        wethPath,
                        burnHandlerAddress,
                        block.timestamp
                    );
                } else {
                    IERC20(tokenIn).safeTransfer(burnHandlerAddress, _burnAmount);
                }
            }
        }
    }

    function swapTokenForToken(
        uint256 _amountIn,
        uint256 _amountOutMin,
        address[] memory _path
    ) public validate(_path) {
        address tokenIn = _path[0];

        IERC20(tokenIn).safeTransferFrom(msg.sender, address(this), _amountIn);
        uint256 _realAmountIn = IERC20(tokenIn).balanceOf(address(this)); // handle fee on transfer tokens

        _approve(tokenIn, _realAmountIn);

        uint256 burnAmount = (_realAmountIn * burnFee) / 10000;
        uint256 teamAmount = (_realAmountIn * teamFee) / 10000;
        uint256 totalFee = burnAmount + teamAmount;
        uint256 amountInSub = _realAmountIn - totalFee;
        UNISWAP_V2_ROUTER().swapExactTokensForTokensSupportingFeeOnTransferTokens(
            amountInSub,
            _amountOutMin,
            _path,
            msg.sender,
            block.timestamp
        );
        burn(burnAmount, _path);
        IERC20(tokenIn).safeTransfer(teamWalletAddress, teamAmount);
    }

    function swapTokenForExactToken(
        uint256 _amountOut,
        uint256 _amountInMax,
        address[] memory _path
    ) public validate(_path) {
        address tokenIn = _path[0];

        IERC20(tokenIn).safeTransferFrom(msg.sender, address(this), _amountInMax);
        uint256 adjustedAmountIn = IERC20(tokenIn).balanceOf(address(this)); // handle fee on transfer tokens

        _approve(tokenIn, adjustedAmountIn);

        uint256 adjustedBurnFee = (adjustedAmountIn * burnFee) / 10000;
        uint256 adjustedTeamFee = (adjustedAmountIn * teamFee) / 10000;
        uint256 totalFee = adjustedBurnFee + adjustedTeamFee;
        uint256 amountInSub = adjustedAmountIn - totalFee;
        uint256[] memory amounts = UNISWAP_V2_ROUTER().swapTokensForExactTokens(
            _amountOut,
            amountInSub,
            _path,
            msg.sender,
            block.timestamp
        );

        uint256 realAmountIn = amounts[0];
        uint256 burnAmount = (realAmountIn * burnFee) / 10000;
        uint256 teamAmount = (realAmountIn * teamFee) / 10000;
        uint256 totalConsume = realAmountIn + burnAmount + teamAmount;
        uint256 refundAmount = adjustedAmountIn - totalConsume;
        if (refundAmount > 0) {
            IERC20(tokenIn).safeTransfer(msg.sender, refundAmount);
        }
        burn(burnAmount, _path);
        IERC20(tokenIn).safeTransfer(teamWalletAddress, teamAmount);
    }

    function swapTokenForETH(
        uint256 _amountIn,
        uint256 _amountOutMin,
        address[] memory _path
    ) public validate(_path) {
        address tokenIn = _path[0];

        IERC20(tokenIn).safeTransferFrom(msg.sender, address(this), _amountIn);
        uint256 adjustedAmountIn = IERC20(tokenIn).balanceOf(address(this)); // handle fee on transfer tokens

        if (tokenIn == WETH) {
            IWETH(WETH).withdraw(adjustedAmountIn);
            _safeTransfer(msg.sender, adjustedAmountIn);
        } else {
            _approve(tokenIn, adjustedAmountIn);
            uint256 burnAmount = (adjustedAmountIn * burnFee) / 10000;
            uint256 teamAmount = (adjustedAmountIn * teamFee) / 10000;
            uint256 totalFee = burnAmount + teamAmount;
            uint256 amountInSub = adjustedAmountIn - totalFee;
            UNISWAP_V2_ROUTER().swapExactTokensForETHSupportingFeeOnTransferTokens(
                amountInSub,
                _amountOutMin,
                _path,
                msg.sender,
                block.timestamp
            );
            burn(burnAmount, _path);
            IERC20(tokenIn).safeTransfer(teamWalletAddress, teamAmount);
        }
    }

    function swapTokenForExactETH(
        uint256 _amountOut,
        uint256 _amountInMax,
        address[] memory _path
    ) public validate(_path) {
        address tokenIn = _path[0];
        IERC20(tokenIn).safeTransferFrom(msg.sender, address(this), _amountInMax);
        uint256 adjustedAmountIn = IERC20(tokenIn).balanceOf(address(this)); // handle fee on transfer tokens

        if (tokenIn == WETH) {
            IWETH(WETH).withdraw(adjustedAmountIn);
            _safeTransfer(msg.sender, adjustedAmountIn);
        } else {
            _approve(tokenIn, adjustedAmountIn);
            uint256 adjustedBurnFee = (adjustedAmountIn * burnFee) / 10000;
            uint256 adjustedTeamFee = (adjustedAmountIn * teamFee) / 10000;
            uint256 totalFee = adjustedBurnFee + adjustedTeamFee;
            uint256 amountInSub = adjustedAmountIn - totalFee;
            uint256[] memory amounts = UNISWAP_V2_ROUTER().swapTokensForExactETH(
                _amountOut,
                amountInSub,
                _path,
                msg.sender,
                block.timestamp
            );
            uint256 realAmountIn = amounts[0];
            uint256 burnAmount = (realAmountIn * burnFee) / 10000;
            uint256 teamAmount = (realAmountIn * teamFee) / 10000;
            uint256 totalConsume = realAmountIn + burnAmount + teamAmount;
            uint256 refundAmount = adjustedAmountIn - totalConsume;
            if (refundAmount > 0) {
                IERC20(tokenIn).safeTransfer(msg.sender, refundAmount);
            }
            burn(burnAmount, _path);
            IERC20(tokenIn).safeTransfer(teamWalletAddress, teamAmount);
        }
    }

    function swapETHForToken(uint256 _amountOutMin, address[] memory _path)
        public
        payable
        validate(_path)
    {
        address tokenOut = _path[_path.length - 1];
        uint256 amountIn = msg.value;

        if (tokenOut == WETH) {
            IWETH(WETH).deposit{value: amountIn}();
            IERC20(WETH).safeTransfer(msg.sender, amountIn);
        } else {
            uint256 burnAmount = (amountIn * burnFee) / 10000;
            uint256 teamAmount = (amountIn * teamFee) / 10000;
            uint256 totalFee = burnAmount + teamAmount;
            uint256 amountInSub = amountIn - totalFee;            
            UNISWAP_V2_ROUTER().swapExactETHForTokensSupportingFeeOnTransferTokens{
                value: amountInSub
            }(_amountOutMin, _path, msg.sender, block.timestamp);
            burn(burnAmount, _path);
            _safeTransfer(teamWalletAddress, teamAmount);
        }
    }

    function swapETHForExactToken(uint256 _amountOut, address[] memory _path)
        public
        payable
        validate(_path)
    {
        address tokenOut = _path[_path.length - 1];
        uint256 amountIn = msg.value;

        if (tokenOut == WETH) {
            IWETH(WETH).deposit{value: amountIn}();
            IERC20(WETH).safeTransfer(msg.sender, amountIn);
        } else {
            uint256 burnAmount = (amountIn * burnFee) / 10000;
            uint256 teamAmount = (amountIn * teamFee) / 10000;
            uint256 totalFee = burnAmount + teamAmount;
            uint256 amountInSub = amountIn - totalFee;
            uint256[] memory amounts = UNISWAP_V2_ROUTER().swapETHForExactTokens{
                value: amountInSub
            }(_amountOut, _path, msg.sender, block.timestamp);
            uint256 refund = amountInSub - amounts[0];
            if (refund > 0) {
                _safeTransfer(msg.sender, refund);
            }
            burn(burnAmount, _path);
            _safeTransfer(teamWalletAddress, teamAmount);
        }
    }

    function getPair(address _tokenIn, address _tokenOut) external view returns (address) {
        return UNISWAP_FACTORY().getPair(_tokenIn, _tokenOut);
    }

    function getAmountIn(uint256 _amountOut, address[] memory _path) public view returns (uint256) {
        uint256[] memory amountsIn = UNISWAP_V2_ROUTER().getAmountsIn(_amountOut, _path);
        uint256 amountInWithoutFee = amountsIn[0];
        uint256 burnAmount = (amountInWithoutFee * burnFee) / 10000;
        uint256 teamAmount = (amountInWithoutFee * teamFee) / 10000;
        uint256 totalFee = burnAmount + teamAmount;
        uint256 amountInWithFee = amountInWithoutFee + totalFee;
        return amountInWithFee;
    }

    function getAmountOut(uint256 _amountIn, address[] memory _path)
        public
        view
        returns (uint256)
    {
        uint256 burnAmount = (_amountIn * burnFee) / 10000;
        uint256 teamAmount = (_amountIn * teamFee) / 10000;
        uint256 totalFee = burnAmount + teamAmount;
        uint256 amountInSub = _amountIn - totalFee;
        uint256[] memory amountOutMins = UNISWAP_V2_ROUTER().getAmountsOut(amountInSub, _path);
        return amountOutMins[amountOutMins.length - 1];
    }

    function _getWETHPath(address[] memory _path)
        internal
        view
        returns (address[] memory wethPath)
    {
        uint256 index = 0;
        for (uint256 i = 0; i < _path.length; i++) {
            if (_path[i] == WETH) {
                index = i + 1;
                break;
            }
        }
        wethPath = new address[](index);
        for (uint256 i = 0; i < index; i++) {
            wethPath[i] = _path[i];
        }
    }

    function _safeTransfer(address _to, uint256 _amount) internal {
        (bool sent, ) = _to.call{value: _amount}("");
        require(sent, "Failed to send Ether");
    }

    function getTokenDecimals(address _addr) public view returns (uint8) {
        return IERC20Metadata(_addr).decimals();
    }

    function setTeamWallet(address payable _teamWallet) public onlyOwner {
        require(_teamWallet != address(0), "invalid team wallet");
        teamWalletAddress = _teamWallet;
    }

    /// @dev USDTs token implementation does not conform to the ERC20 standard
    /// first of all it requires an allowance to be set to zero before it can be set to a new value, therefore we set the allowance to zero here first
    /// secondly the return type does not conform to the ERC20 standard, therefore we ignore the return value
    function _approve(address token, uint256 amount) internal {
        (bool success, ) = token.call(
            abi.encodeWithSignature("approve(address,uint256)", address(UNISWAP_V2_ROUTER()), 0)
        );
        require(success, "Approval to zero failed");
        (success, ) = token.call(
            abi.encodeWithSignature(
                "approve(address,uint256)",
                address(UNISWAP_V2_ROUTER()),
                amount
            )
        );
        require(success, "Approval failed");
    }    

    receive() external payable {}
}

// File: contracts/SwapToBurnEthereum.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import "./SwapToBurnBase.sol";

contract SwapToBurnEthereum is SwapToBurnBase {
    constructor(
        uint256 _burnFee,
        uint256 _teamFee,
        address _burnHandler,
        address _teamWallet
    ) SwapToBurnBase(_burnFee, _teamFee, _burnHandler, _teamWallet) {}

    function LUFFY() public pure override returns (address) {
        return 0x7121D00b4fA18F13Da6c2e30d19C04844E6AfDC8;
    }

    function UNISWAP_V2_ROUTER() internal pure override returns (IUniswapV2Router02) {
        return IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
    }

    function UNISWAP_FACTORY() internal pure override returns (IUniswapV2Factory) {
        return IUniswapV2Factory(0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f);
    }
}