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• interface IERC20
•    - function totalSupply()
•    - function balanceOf(address account)
•    - function transfer(address to, uint256 ...
•    - function allowance(address owner, add ...
•    - function approve(address spender, uin ...
•    - function transferFrom(address from, a ...
•    - function _msgSender()
•    - function _msgData()
•    - function _contextSuffixLength()
•    - function owner()
•    - function _checkOwner()
•    - function renounceOwnership()
•    - function transferOwnership(address ne ...
•    - function _transferOwnership(address n ...
• interface IERC20Permit
•    - function permit(
•    - function nonces(address owner)
•    - function DOMAIN_SEPARATOR()
• library Address
•    - function sendValue(address payable re ...
•    - function functionCall(address target, ...
•    - function functionCallWithValue(addres ...
•    - function functionStaticCall(address t ...
•    - function functionDelegateCall(address ...
•    - function verifyCallResultFromTarget(
•    - function verifyCallResult(bool succes ...
•    - function _revert(bytes memory returnd ...
• library SafeERC20
•    - function safeTransfer(IERC20 token, a ...
•    - function safeTransferFrom(IERC20 toke ...
•    - function safeIncreaseAllowance(IERC20 ...
•    - function safeDecreaseAllowance(IERC20 ...
•    - function forceApprove(IERC20 token, a ...
•    - function _callOptionalReturn(IERC20 t ...
•    - function _callOptionalReturnBool(IERC ...
• interface IUniswapV2Router01
•    - function factory()
•    - function WETH()
•    - function addLiquidity(
•    - function addLiquidityETH(
•    - function removeLiquidity(
•    - function removeLiquidityETH(
•    - function removeLiquidityWithPermit(
•    - function removeLiquidityETHWithPermit ...
•    - function swapExactTokensForTokens(
•    - function swapTokensForExactTokens(
•    - function swapExactETHForTokens(uint a ...
•    - function swapTokensForExactETH(uint a ...
•    - function swapExactTokensForETH(uint a ...
•    - function swapETHForExactTokens(uint a ...
•    - function quote(uint amountA, uint res ...
•    - function getAmountOut(uint amountIn, ...
•    - function getAmountIn(uint amountOut, ...
•    - function getAmountsOut(uint amountIn, ...
•    - function getAmountsIn(uint amountOut, ...
• interface IUniswapV2Router02 is IUnis ...
•    - function removeLiquidityETHSupporting ...
•    - function removeLiquidityETHWithPermit ...
•    - function swapExactTokensForTokensSupp ...
•    - function swapExactETHForTokensSupport ...
•    - function swapExactTokensForETHSupport ...
• interface IPresale
•    - function deposit()
•    - function finalize()
•    - function cancel()
•    - function claim()
•    - function unlockClaim()
•    - function refund()
•  contract Presale is IPresale, Owna ... *
•    - function deposit()
•    - function finalize()
•    - function cancel()
•    - function extendEndTime(uint112 end)
•    - function claim()
•    - function unlockClaim()
•    - function refund()
•    - function _purchase(address beneficiar ...
•    - function _liquify(uint256 _weiAmount, ...
•    - function _prevalidatePurchase(address ...
•    - function _prevalidatePool(PresaleOpti ...
•    - function userTokens(address contribut ...
•    - function _seederTokens()
•    - function _seederTotalValue()
•    - function _liquidityWei()
•    - function _tokensForLiquidity()
•    - function _tokensForPresale()

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/**
 *Submitted for verification at Etherscan.io on 2024-06-24
*/

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


// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @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 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);
}

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


// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)

pragma solidity ^0.8.20;

/**
 * @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;
    }

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

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


// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

pragma solidity ^0.8.20;


/**
 * @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);
    }
}

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


// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.20;

/**
 * @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.
 *
 * ==== Security Considerations
 *
 * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature
 * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be
 * considered as an intention to spend the allowance in any specific way. The second is that because permits have
 * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should
 * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be
 * generally recommended is:
 *
 * ```solidity
 * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {
 *     try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}
 *     doThing(..., value);
 * }
 *
 * function doThing(..., uint256 value) public {
 *     token.safeTransferFrom(msg.sender, address(this), value);
 *     ...
 * }
 * ```
 *
 * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of
 * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also
 * {SafeERC20-safeTransferFrom}).
 *
 * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so
 * contracts should have entry points that don't rely on permit.
 */
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);
}

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


// OpenZeppelin Contracts (last updated v5.0.0) (utils/Address.sol)

pragma solidity ^0.8.20;

/**
 * @dev Collection of functions related to the address type
 */
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();
        }
    }
}

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


// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;




/**
 * @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;
    }
}

// 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;


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: IPresale.sol

// Website: https://genesisdao.io/
// X: https://x.com/0xGenesisDAO
// Discord: https://discord.gg/genesisdao


//                                         &                                       
//                           (&&&&&&&&&&&&&&&&&&&&&&&&&&&*                         
//                      &&&&&&&&&&&&&&&&&&&&&@,,@@@@&&&&&&&&&&&                    
//                  &&&&&&&&&&&&&&&&&&&&&,,,,,,,,,*@@@&&&&&&&&&&&&&                
//               &&&&&&&&&&&&&&&&&&&&,,,,,,,,,,,@@@@@@@&&&&&&&&&&&&&&&             
//            &&&&&&&&&&&&&&&&&@,,,,,,,,,,,@@@@@@@@@@&&&&&&&&&&&&&&&&&&&&          
//          &&&&&&&&&&&&&&@,,,,,,,,,,,*@@@@@@@@@@&&&&&&&&&@,,,,,#@@@@&&&&&&        
//        &&&&&&&&&&&&#,,,,,,,,,,,@@@@@@@@@@@&&&&&&&&&*,,,,,,,,,,,,@@@@&&&&&&      
//       &&&&&&&&&@..,,.,,,,,@@@@@@@@@@&&&&&&&&&&@,,,,,,,,,,,,,,,,,@@@@&&&&&&&     
//     #&&&&&&&&&&@..,,,,,%@@@@@@@@&&&&&&&&&@,,,,,,,,,,,,@@,,,,,,,,@@@@&&&&&&&&    
//    &&&&&&&&&&&&@..,,,,,&@@@@&&&&&&&&&..,,,,,,,,,,@@@@@@@@,,,,,,,@@@@&&&&&&&&&&  
//   &&&&&&&&&&&&&@..,,,,,&@@@@&&&&&&&&@..,,,,,@@@@@@@@@@@@@,,,,,,,@@@@&&&&&&&&&&* 
//   &&&&&&&&&&&&&@..,,,,,&@@@@&&&&&&&&@@@@@@@@@@@@@@&&&&&&@,,,,,,,@@@@&&&&&&&&&&& 
//  &&&&&&&&&&&&&&@..,,,,@@@@@@&&&&&&&&&&&&@@@@@@&&&&&&&&&&@@,,,,,,@@@@&&&&&&&&&&&&
//  &&&&&&&&&&&&&&@@@@@@@@//*,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,@@@@@@@@@@@@&&&&&&&&&&&&
//  &&&&&&&&&&&&&&&@@@/**,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,*@@@@@@@@@&&&&&&&&&&&&&
// &&&&&&&&&&&&&&&@.....,.,,@@@@@@@@@@@@@@@@@@@@@@@@@@&&%@@@@@@/*,,@@@@&&&&&&&&&&&&
//  &&&&&&&&&&&&&&@....,,,,@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@/**,,,,@@@@&&&&&&&&&&&&
//  &&&&&&&&&&&&&&@....,,,,@@@@&&&&&&&&&&&&&&&&&&&&&&&&&&&&@,,,,,,,@@@@&&&&&&&&&&&&
//  &&&&&&&&&&&&&&@....,,,,@@@@&&&&&&&&&@,,,,,@@@@&&&&&&&&&@,,,,,,,@@@@&&&&&&&&&&&&
//   &&&&&&&&&&&&&@....,,,,@@@@&&&&&,,,,,,,,,,,,@@@@&&&&&&&@,,,,,,,@@@@&&&&&&&&&&& 
//   &&&&&&&&&&&&&@....,,,,@@@@,,,,,,,,,,,,,,@@@@@@@&&&&&&&@,,,,,,,@@@@&&&&&&&&&&* 
//    &&&&&&&&&&&&@....,,,,,,,,,,,,,,,,,@@@@@@@@@@@&&&&&&&&,,,,,,,,@@@@&&&&&&&&&&  
//     /&&&&&&&&&&@....,,,,,,,,,,,@@@@@@@@@@@@&&&&&&&&@,,,,,,,,,,,,@@@@&&&&&&&&    
//       &&&&&&&&&@@....,,,,,@@@@@@@@@@@@&&&&&&&&&,,,,,,,,,,,,,@@@@@@@@&&&&&&&     
//        &&&&&&&&&@@@@@@@@@@@@@@@@&&&&&&&&&&@,,,,,,,,,,,,@@@@@@@@@@@&&&&&&&&      
//          &&&&&&&&&&@@@@@@@@&&&&&&&&&&@,,,,,,,,,,,,@@@@@@@@@@@&&&&&&&&&&&        
//            &&&&&&&&&&&&&&&&&&&&&&..,,,,,,,,,,(@@@@@@@@@@&&&&&&&&&&&&&&          
//               &&&&&&&&&&&&&&&&&@...,,,,,,@@@@@@@@@@&&&&&&&&&&&&&&&&             
//                  &&&&&&&&&&&&&&@@@@@@@@@@@@@@@@&&&&&&&&&&&&&&&&&                
//                      &&&&&&&&&&&&@@@@@@@@@&&&&&&&&&&&&&&&&&&                    
//                           *&&&&&&&&&&&&&&&&&&&&&&&&&&& 


interface IPresale {
    
    /**
     * @dev Emitted when an unauthorized address attempts an action requiring specific permissions.
     */
    error Unauthorized();

    /**
     * @dev Emitted when an action is performed in an invalid state.
     * @param currentState The current state of the contract.
     */
    error InvalidState(uint8 currentState);

    /**
     * @dev Emitted when attempting to finalize a presale that has not reached its soft cap.
     */
    error SoftCapNotReached();

    /**
     * @dev Emitted when a purchase attempt exceeds the presale's hard cap.
     */
    error HardCapExceed();

    /**
     * @dev Emitted when user with no contribution attempts to claim tokens.
     */
    error NotClaimable();

    /**
     * @dev Emitted when a purchase or refund attempt is made outside the presale period.
     */
    error NotInPurchasePeriod();

    /**
     * @dev Emitted when a purchase amount is below the minimum allowed.
     */
    error PurchaseBelowMinimum();

    /**
     * @dev Emitted when a participant's purchase would exceed the maximum allowed contribution.
     */
    error PurchaseLimitExceed();

    /**
     * @dev Emitted when a refund is requested under conditions that do not permit refunds.
     */
    error NotRefundable();

    /**
     * @dev Emitted when the process of adding liquidity to a liquidity pool fails.
     */
    error LiquificationFailed();

    /**
     * @dev Emitted when the initialization parameters provided to the contract are invalid.
     */
    error InvalidInitializationParameters();

    /**
     * @dev Emitted when the pool validation parameters provided to the contract are invalid.
     */
    error InvalidCapValue();

    /**
     * @dev Emitted when the pool validation parameters provided to the contract are invalid.
     */
    error InvalidLimitValue();

    /**
     * @dev Emitted when the pool validation parameters provided to the contract are invalid.
     */
    error InvalidLiquidityValue();


    /**
     * @dev Emitted when the pool validation parameters provided to the contract are invalid.
     */
    error InvalidTimestampValue();

    /**
     * @dev Emitted when the presale contract owner deposits tokens for sale.
     * This is usually done before the presale starts to ensure tokens are available for purchase.
     * @param creator Address of the contract owner who performs the deposit.
     * @param amount Amount of tokens deposited.
     * @param timestamp Block timestamp when the deposit occurred.
     */
    event Deposit(address indexed creator, uint256 amount, uint256 timestamp);

    /**
     * @dev Emitted for each purchase made during the presale. Tracks the buyer, the amount of ETH contributed,
     * and the amount of tokens purchased.
     * @param beneficiary Address of the participant who made the purchase.
     * @param contribution Amount of ETH contributed by the participant.
     */
    event Purchase(address indexed beneficiary, uint256 contribution);

    /**
     * @dev Emitted when the presale is successfully finalized. Finalization may involve distributing tokens,
     * transferring raised funds to a designated wallet, and/or enabling token claim functionality.
     * @param creator Address of the contract owner who finalized the presale.
     * @param amount Total amount of ETH raised in the presale.
     * @param timestamp Block timestamp when the finalization occurred.
     */
    event Finalized(address indexed creator, uint256 amount, uint256 timestamp);

    /**
     * @dev Emitted when a participant successfully claims a refund. This is typically allowed when the presale
     * is cancelled or does not meet its funding goals.
     * @param beneficiary Address of the participant receiving the refund.
     * @param amount Amount of wei refunded.
     * @param timestamp Block timestamp when the refund occurred.
     */
    event Refund(address indexed beneficiary, uint256 amount, uint256 timestamp);

    /**
     * @dev Emitted when participants claim their purchased tokens after the presale is finalized. 
     * @param beneficiary Address of the participant claiming tokens.
     * @param amount Amount of tokens claimed.
     * @param timestamp Block timestamp when the claim occurred.
     */
    event TokenClaim(address indexed beneficiary, uint256 amount, uint256 timestamp);

    /**
     * @dev Emitted when the presale is cancelled by the contract owner. A cancellation may allow participants
     * to claim refunds for their contributions.
     * @param creator Address of the contract owner who cancelled the presale.
     * @param timestamp Block timestamp when the cancellation occurred.
     */
    event Cancel(address indexed creator, uint256 timestamp);

    /**
     * @dev Allows for the deposit of presale tokens by the owner.
     * This function is intended to be called by the presale contract owner to
     * deposit the tokens that are to be sold during the presale.
     * 
     * @return The amount of tokens deposited for the presale.
     */
    function deposit() external returns (uint256);

    /**
     * @dev Finalizes the presale, allowing for the distribution of tokens to
     * participants and the withdrawal of funds raised to the beneficiary. This
     * function is typically called after the presale ends, assuming it meets
     * any predefined criteria such as minimum funding goals.
     * 
     * @return A boolean value indicating whether the presale was successfully
     * finalized.
     */
    function finalize() external returns (bool);

    /**
     * @dev Cancels the presale and enables the refund process for participants.
     * This function can be used in scenarios where the presale does not meet
     * its goals or if the organizer decides to cancel the event for any reason.
     * 
     * @return A boolean value indicating whether the presale was successfully
     * cancelled.
     */
    function cancel() external returns (bool);

    /**
     * @dev Allows participants to claim their purchased tokens after the presale
     * is finalized. Participants call this function to receive the tokens they
     * are entitled to.
     * 
     * @return The amount of tokens claimed by the caller.
     */
    function claim() external returns (uint256);

    /**
    * @dev Allows contributors to get a refund when the presale fails or is canceled.
    */
    function unlockClaim() external;

    /**
     * @dev Enables participants to request a refund of their contribution if the
     * presale is cancelled or if they are otherwise eligible for a refund
     * according to the presale's terms.
     * 
     * @return The amount of funds refunded to the caller.
     */
    function refund() external returns (uint256);
}
// File: Presale.sol

// Website: https://genesisdao.io/
// X: https://x.com/0xGenesisDAO
// Discord: https://discord.gg/genesisdao

pragma solidity ^0.8.24;


//                                         &                                       
//                           (&&&&&&&&&&&&&&&&&&&&&&&&&&&*                         
//                      &&&&&&&&&&&&&&&&&&&&&@,,@@@@&&&&&&&&&&&                    
//                  &&&&&&&&&&&&&&&&&&&&&,,,,,,,,,*@@@&&&&&&&&&&&&&                
//               &&&&&&&&&&&&&&&&&&&&,,,,,,,,,,,@@@@@@@&&&&&&&&&&&&&&&             
//            &&&&&&&&&&&&&&&&&@,,,,,,,,,,,@@@@@@@@@@&&&&&&&&&&&&&&&&&&&&          
//          &&&&&&&&&&&&&&@,,,,,,,,,,,*@@@@@@@@@@&&&&&&&&&@,,,,,#@@@@&&&&&&        
//        &&&&&&&&&&&&#,,,,,,,,,,,@@@@@@@@@@@&&&&&&&&&*,,,,,,,,,,,,@@@@&&&&&&      
//       &&&&&&&&&@..,,.,,,,,@@@@@@@@@@&&&&&&&&&&@,,,,,,,,,,,,,,,,,@@@@&&&&&&&     
//     #&&&&&&&&&&@..,,,,,%@@@@@@@@&&&&&&&&&@,,,,,,,,,,,,@@,,,,,,,,@@@@&&&&&&&&    
//    &&&&&&&&&&&&@..,,,,,&@@@@&&&&&&&&&..,,,,,,,,,,@@@@@@@@,,,,,,,@@@@&&&&&&&&&&  
//   &&&&&&&&&&&&&@..,,,,,&@@@@&&&&&&&&@..,,,,,@@@@@@@@@@@@@,,,,,,,@@@@&&&&&&&&&&* 
//   &&&&&&&&&&&&&@..,,,,,&@@@@&&&&&&&&@@@@@@@@@@@@@@&&&&&&@,,,,,,,@@@@&&&&&&&&&&& 
//  &&&&&&&&&&&&&&@..,,,,@@@@@@&&&&&&&&&&&&@@@@@@&&&&&&&&&&@@,,,,,,@@@@&&&&&&&&&&&&
//  &&&&&&&&&&&&&&@@@@@@@@//*,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,@@@@@@@@@@@@&&&&&&&&&&&&
//  &&&&&&&&&&&&&&&@@@/**,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,*@@@@@@@@@&&&&&&&&&&&&&
// &&&&&&&&&&&&&&&@.....,.,,@@@@@@@@@@@@@@@@@@@@@@@@@@&&%@@@@@@/*,,@@@@&&&&&&&&&&&&
//  &&&&&&&&&&&&&&@....,,,,@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@/**,,,,@@@@&&&&&&&&&&&&
//  &&&&&&&&&&&&&&@....,,,,@@@@&&&&&&&&&&&&&&&&&&&&&&&&&&&&@,,,,,,,@@@@&&&&&&&&&&&&
//  &&&&&&&&&&&&&&@....,,,,@@@@&&&&&&&&&@,,,,,@@@@&&&&&&&&&@,,,,,,,@@@@&&&&&&&&&&&&
//   &&&&&&&&&&&&&@....,,,,@@@@&&&&&,,,,,,,,,,,,@@@@&&&&&&&@,,,,,,,@@@@&&&&&&&&&&& 
//   &&&&&&&&&&&&&@....,,,,@@@@,,,,,,,,,,,,,,@@@@@@@&&&&&&&@,,,,,,,@@@@&&&&&&&&&&* 
//    &&&&&&&&&&&&@....,,,,,,,,,,,,,,,,,@@@@@@@@@@@&&&&&&&&,,,,,,,,@@@@&&&&&&&&&&  
//     /&&&&&&&&&&@....,,,,,,,,,,,@@@@@@@@@@@@&&&&&&&&@,,,,,,,,,,,,@@@@&&&&&&&&    
//       &&&&&&&&&@@....,,,,,@@@@@@@@@@@@&&&&&&&&&,,,,,,,,,,,,,@@@@@@@@&&&&&&&     
//        &&&&&&&&&@@@@@@@@@@@@@@@@&&&&&&&&&&@,,,,,,,,,,,,@@@@@@@@@@@&&&&&&&&      
//          &&&&&&&&&&@@@@@@@@&&&&&&&&&&@,,,,,,,,,,,,@@@@@@@@@@@&&&&&&&&&&&        
//            &&&&&&&&&&&&&&&&&&&&&&..,,,,,,,,,,(@@@@@@@@@@&&&&&&&&&&&&&&          
//               &&&&&&&&&&&&&&&&&@...,,,,,,@@@@@@@@@@&&&&&&&&&&&&&&&&             
//                  &&&&&&&&&&&&&&@@@@@@@@@@@@@@@@&&&&&&&&&&&&&&&&&                
//                      &&&&&&&&&&&&@@@@@@@@@&&&&&&&&&&&&&&&&&&                    
//                           *&&&&&&&&&&&&&&&&&&&&&&&&&&& 







/**
 * @title Presale contract
 * @notice Create and manage a presales of an ERC20 token
 */
contract Presale is IPresale, Ownable {
    using SafeERC20 for IERC20;
    using Address for address payable;

    /// Scaling factor to maintain precision.
    uint256 constant SCALE = 10**18;

    /** 
     * @notice Presale options
     * @param tokenDeposit Total tokens deposited for sale and liquidity.
     * @param softCap Minimum Wei to be raised to consider the presale successful.
     * @param max Maximum Wei contribution per address.
     * @param min Minimum Wei contribution per address.
     * @param start Start timestamp of the presale.
     * @param end End timestamp of the presale.
     * @param liquidityBps Basis points of funds raised to be allocated to liquidity.
     * @param launchIncreaseBps The price increase from presale to launch.
     * @param seederNum The amount of seeders.
     * @param seederPremiumBps The premium seeders will get.
    */ 
    struct PresaleOptions{
        uint256 tokenDeposit;
        uint256 softCap;
        uint256 hardCap;
        uint256 max;
        uint256 min;
        uint112 start;
        uint112 end;
        uint32 liquidityBps;
        uint32 launchIncreaseBps;
        uint256 seederRaisedWei;
        uint32 seederPremiumBps;
    }

    /** 
     * @notice Presale pool
     * @param token Address of the token.
     * @param uniswapV2Router02
     * @param tokenBalance Token balance in this contract
     * @param tokensClaimable
     * @param tokensLiquidity
     * @param weiRaised
     * @param weth
     * @param state Current state of the presale {1: Initialized, 2: Active, 3: Canceled, 4: Finalized, 5: Claimable}.
     * @param options PresaleOptions struct containing configuration for the presale.
    */
    struct Pool {
        IERC20 token;
        IUniswapV2Router02 uniswapV2Router02;
	    address routerAddress;
        uint256 tokenBalance;
        uint256 tokensClaimable;
        uint256 tokensLiquidity;
        uint256 weiRaised;
        address weth;
        uint8 state;
        PresaleOptions options;
    }

    mapping(address => uint256) public contributions;

    Pool public pool;

    /// @notice Canceled or NOT softcapped and expired
    modifier onlyRefundable() {
        require(pool.state == 3 || (block.timestamp > pool.options.end && pool.weiRaised < pool.options.softCap), 
        "Presale has to be cancelled, or softcap not met during active period.");
        _;
    }
    
    /** 
     * @param _weth Address of WETH.
     * @param _token Address of the presale token.
     * @param _uniswapV2Router02 Address of the Uniswap V2 router.
     * @param _options Configuration options for the presale.
    */
    constructor (address _weth, address _token, address _uniswapV2Router02, PresaleOptions memory _options) Ownable(msg.sender) {
        _prevalidatePool(_options);
        pool.uniswapV2Router02 = IUniswapV2Router02(_uniswapV2Router02);
	    pool.routerAddress = _uniswapV2Router02;
        pool.token = IERC20(_token);
        pool.state = 1;
        pool.weth = _weth;
        pool.options = _options;
    }

    receive() external payable {
        _purchase(msg.sender, msg.value);
    }

    /** 
     * @notice Calling this function deposits tokens into the contract. Contributions are unavailable until this 
     * function is called by the owner of the presale.
     * NOTE This function uses { transferFrom } method from { IERC20 } to handle token deposits into the contract, make sure to approve this contract to spend the required tokens for deposit.
     * @return The amount of tokens deposited.
    */
    function deposit() external onlyOwner returns (uint256) {
        if(pool.state != 1) revert InvalidState(pool.state);
        pool.state = 2;
        
        pool.tokenBalance += pool.options.tokenDeposit;
        pool.tokensLiquidity = _tokensForLiquidity();
        pool.tokensClaimable = _tokensForPresale();

        IERC20(pool.token).safeTransferFrom(msg.sender, address(this), pool.options.tokenDeposit);

        emit Deposit(msg.sender, pool.options.tokenDeposit, block.timestamp);
        return pool.options.tokenDeposit;
    }


    /** 
     * @notice Call this function to finalize a succesful presale. 
     * This will allocate the share of seeder tokens for redist, and calculate the amount of ETH needed for LP. 
     * The remaining ETH is transfered to the sender. 
     * @return True if the finalization was successful.
    */
    function finalize() external onlyOwner returns(bool) {
        if(pool.state != 2) revert InvalidState(pool.state);
        if(pool.weiRaised < pool.options.softCap) revert SoftCapNotReached();
        require(block.timestamp > pool.options.end, "Presale still in active period");
 
        pool.state = 4;

        // Calculate the tokens owed to the seed investors
        uint256 seederTokens = _seederTokens();

        // Send seed investor tokens to owner, for further redistribution
        IERC20(pool.token).safeTransfer(msg.sender, seederTokens);
        pool.tokenBalance -= seederTokens;

        // Subtract the seed investor tokens from the amount allocated to the LP        
        pool.tokensLiquidity -= seederTokens;
        
        uint256 liquidityWei = _liquidityWei();

        if(pool.weiRaised < liquidityWei) revert InvalidLiquidityValue();

        uint256 withdrawable = pool.weiRaised - liquidityWei;
        if (withdrawable > 0) payable(msg.sender).sendValue(withdrawable);

        // Add LP
        _liquify(liquidityWei, pool.tokensLiquidity);
        pool.tokenBalance -= pool.tokensLiquidity;

        emit Finalized(msg.sender, pool.weiRaised, block.timestamp);
        
        return true;
    }

    /** 
     * @notice Call this function to cancel a presale. Calling this function withdraws deposited tokens and allows contributors 
     * to refund their contributions. Can only cancel NOT finalized presale. 
     * @return True if the cancellation was successful.
    */
    function cancel() external onlyOwner returns(bool){
        if(pool.state > 2) revert InvalidState(pool.state);

        pool.state = 3;

        if (pool.tokenBalance > 0) {
            uint256 amount = pool.tokenBalance;
            pool.tokenBalance = 0;
            IERC20(pool.token).safeTransfer(msg.sender, amount);
        }

        emit Cancel(msg.sender, block.timestamp);

        return true;
    }

    /**
     * @notice Allows the owner to extend the active period of the presale, but only while the presale is ongoing.
    */
    function extendEndTime(uint112 end) external onlyOwner {
        if(block.timestamp < pool.options.start || block.timestamp > pool.options.end) revert NotInPurchasePeriod(); // Presale can only be extended during active period
        if(pool.state != 2) revert InvalidState(pool.state);
        pool.options.end = end;
    }

    /** 
     * @notice Allows contributors to claim their tokens after the presale is finalized.
     * @return The amount of tokens claimed.
    */
    function claim() external returns (uint256) {
        if(pool.state != 5) revert InvalidState(pool.state);
        if (contributions[msg.sender] == 0) revert NotClaimable();

        uint256 amount = userTokens(msg.sender);
        pool.tokenBalance -= amount;
        contributions[msg.sender] = 0;
        
        IERC20(pool.token).safeTransfer(msg.sender, amount);
        emit TokenClaim(msg.sender, amount, block.timestamp);
        return amount;
    }

    /*
    * @notice must be called manually by owner post finalize. Will allow investors to claim their tokens from the presale.
    */
    function unlockClaim() external onlyOwner {
        if(pool.state != 4) revert InvalidState(pool.state);
        pool.state = 5;
    }

    /** 
     * @notice Allows contributors to get a refund when the presale fails or is canceled.
     * @return The amount of Wei refunded.
    */
    function refund() external onlyRefundable returns (uint256) {
        if(contributions[msg.sender] == 0) revert NotRefundable();

        uint256 amount = contributions[msg.sender];

        if(address(this).balance >= amount) {   
            contributions[msg.sender] = 0;
            payable(msg.sender).sendValue(amount);
            emit Refund(msg.sender, amount, block.timestamp);
        }

        return amount;
    }

    /** 
     * @notice Handles token purchase.
     * @param beneficiary The address making the purchase.
     * @param amount The amount of Wei contributed.
    */
    function _purchase(address beneficiary, uint256 amount) private {
        _prevalidatePurchase(beneficiary, amount);

        pool.weiRaised += amount;
        contributions[beneficiary] += amount;
        
        emit Purchase(beneficiary, amount);
    }

    /**
     * @notice Handles liquidity provisioning.
     * @param _weiAmount The amount of Wei to be added to liquidity.
     * @param _tokenAmount The amount of tokens to be added to liquidity.
    */
    function _liquify(uint256 _weiAmount, uint256 _tokenAmount) private {
        IERC20(pool.token).approve(pool.routerAddress, _tokenAmount);
        IERC20(pool.weth).approve(pool.routerAddress, _weiAmount);	
        (uint amountToken, uint amountETH,) = pool.uniswapV2Router02.addLiquidityETH{value : _weiAmount}(
            address(pool.token),
            _tokenAmount,
            _tokenAmount,
            _weiAmount,
            owner(),
            block.timestamp + 600
        );
        
        if(amountToken != _tokenAmount && amountETH != _weiAmount) revert LiquificationFailed();
    }

    /**
     * @notice Validates the purchase conditions before accepting funds.
     * @param _beneficiary The address attempting to make a purchase.
     * @param _amount The amount of Wei being contributed.
     * @return True if the purchase is valid.
    */
    function _prevalidatePurchase(address _beneficiary, uint256 _amount) internal view returns(bool) {
        if(pool.state != 2) revert InvalidState(pool.state);
        if(block.timestamp < pool.options.start || block.timestamp > pool.options.end) revert NotInPurchasePeriod();
        if(pool.options.hardCap > 0 && pool.weiRaised + _amount > pool.options.hardCap) revert HardCapExceed();
        if(_amount < pool.options.min) revert PurchaseBelowMinimum();
        if(_amount + contributions[_beneficiary] > pool.options.max) revert PurchaseLimitExceed();
        return true;
    }

    /**
     * @param _options The presale options.
     * @return True if the pool configuration is valid.
    */
    function _prevalidatePool(PresaleOptions memory _options) internal pure returns(bool) {
        if (_options.softCap == 0) revert InvalidCapValue();
        if (_options.min == 0 || _options.min > _options.max) revert InvalidLimitValue();
        if (_options.liquidityBps < 0 || _options.liquidityBps > 10000) revert InvalidLiquidityValue();
        if (_options.end < _options.start) revert InvalidTimestampValue();
        return true;
    }

    /**
     * @notice Tokens per user rate is dynamically calculated using the proportional allocation of current raise amount in Wei.
     * @param contributor The address of the contributor.
     * @return The amount of tokens claimable by the contributor.
    */
    function userTokens(address contributor) public view returns(uint256){
        return ((contributions[contributor] * SCALE) / pool.weiRaised * pool.tokensClaimable) / SCALE;
    }

    /**
     * @notice Tokens per seed investor rate is dynamically calculated using the proportional allocation of current raise amount in Wei.
     * @return The total amount of tokens allocated to the seed investors
    */
    function _seederTokens() internal view returns(uint256) {
        return ((_seederTotalValue() * SCALE) / pool.weiRaised * pool.tokensClaimable) / SCALE;
    }

    /**
     * @notice Calculates the amount of effective wei the seeders have raised.
     * For example, at a 30% premium (seederPremiumBps = 3000), and 10 ETH seed funds raised, the total value will be 13 ETH.
     * @return The amount of token value in wei the seeders have raised.
    */
    function _seederTotalValue() internal view returns (uint256) {
        return pool.options.seederRaisedWei + (pool.options.seederRaisedWei * pool.options.seederPremiumBps / 10_000);
    }

    /**
    * @notice Calculates the amount of ETH going to LP based on the number of tokens, and liquidity raised. 
    * Launch value of the token should be at launchIncreaseBps% below presale price (1000 = 10%).
    * @return the number of ETH in wei to be added to the LP.
    */ 
    function _liquidityWei() internal view returns (uint256) {
        uint256 tokensPerWei = ((pool.tokensClaimable * SCALE) / pool.weiRaised) / SCALE;
        uint256 tokensPerWeiLaunch = tokensPerWei - (tokensPerWei * pool.options.launchIncreaseBps / 10_000);
        uint256 liquidityWei = ((pool.tokensLiquidity * SCALE) / tokensPerWeiLaunch) / SCALE;
        return liquidityWei;
    }

    /**
     * @notice Calculates the amount of tokens allocated for liquidity.
     * @return The amount of tokens for liquidity.
    */
    function _tokensForLiquidity() internal view returns (uint256){
        return pool.options.tokenDeposit * pool.options.liquidityBps / 10_000;
    }

    /**
     * @notice Calculates the amount of tokens allocated for the presale.
     * @return The amount of tokens available for the presale.
    */
    function _tokensForPresale() internal view returns (uint256){
        return pool.options.tokenDeposit - (pool.options.tokenDeposit * pool.options.liquidityBps / 10_000);
    }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_weth","type":"address"},{"internalType":"address","name":"_token","type":"address"},{"internalType":"address","name":"_uniswapV2Router02","type":"address"},{"components":[{"internalType":"uint256","name":"tokenDeposit","type":"uint256"},{"internalType":"uint256","name":"softCap","type":"uint256"},{"internalType":"uint256","name":"hardCap","type":"uint256"},{"internalType":"uint256","name":"max","type":"uint256"},{"internalType":"uint256","name":"min","type":"uint256"},{"internalType":"uint112","name":"start","type":"uint112"},{"internalType":"uint112","name":"end","type":"uint112"},{"internalType":"uint32","name":"liquidityBps","type":"uint32"},{"internalType":"uint32","name":"launchIncreaseBps","type":"uint32"},{"internalType":"uint256","name":"seederRaisedWei","type":"uint256"},{"internalType":"uint32","name":"seederPremiumBps","type":"uint32"}],"internalType":"struct Presale.PresaleOptions","name":"_options","type":"tuple"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"target","type":"address"}],"name":"AddressEmptyCode","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"AddressInsufficientBalance","type":"error"},{"inputs":[],"name":"FailedInnerCall","type":"error"},{"inputs":[],"name":"HardCapExceed","type":"error"},{"inputs":[],"name":"InvalidCapValue","type":"error"},{"inputs":[],"name":"InvalidInitializationParameters","type":"error"},{"inputs":[],"name":"InvalidLimitValue","type":"error"},{"inputs":[],"name":"InvalidLiquidityValue","type":"error"},{"inputs":[{"internalType":"uint8","name":"currentState","type":"uint8"}],"name":"InvalidState","type":"error"},{"inputs":[],"name":"InvalidTimestampValue","type":"error"},{"inputs":[],"name":"LiquificationFailed","type":"error"},{"inputs":[],"name":"NotClaimable","type":"error"},{"inputs":[],"name":"NotInPurchasePeriod","type":"error"},{"inputs":[],"name":"NotRefundable","type":"error"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"OwnableInvalidOwner","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"OwnableUnauthorizedAccount","type":"error"},{"inputs":[],"name":"PurchaseBelowMinimum","type":"error"},{"inputs":[],"name":"PurchaseLimitExceed","type":"error"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"SafeERC20FailedOperation","type":"error"},{"inputs":[],"name":"SoftCapNotReached","type":"error"},{"inputs":[],"name":"Unauthorized","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"creator","type":"address"},{"indexed":false,"internalType":"uint256","name":"timestamp","type":"uint256"}],"name":"Cancel","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"creator","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"timestamp","type":"uint256"}],"name":"Deposit","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"creator","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"timestamp","type":"uint256"}],"name":"Finalized","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"beneficiary","type":"address"},{"indexed":false,"internalType":"uint256","name":"contribution","type":"uint256"}],"name":"Purchase","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"beneficiary","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"timestamp","type":"uint256"}],"name":"Refund","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"beneficiary","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"timestamp","type":"uint256"}],"name":"TokenClaim","type":"event"},{"inputs":[],"name":"cancel","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"claim","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"contributions","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"deposit","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint112","name":"end","type":"uint112"}],"name":"extendEndTime","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"finalize","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pool","outputs":[{"internalType":"contract IERC20","name":"token","type":"address"},{"internalType":"contract IUniswapV2Router02","name":"uniswapV2Router02","type":"address"},{"internalType":"address","name":"routerAddress","type":"address"},{"internalType":"uint256","name":"tokenBalance","type":"uint256"},{"internalType":"uint256","name":"tokensClaimable","type":"uint256"},{"internalType":"uint256","name":"tokensLiquidity","type":"uint256"},{"internalType":"uint256","name":"weiRaised","type":"uint256"},{"internalType":"address","name":"weth","type":"address"},{"internalType":"uint8","name":"state","type":"uint8"},{"components":[{"internalType":"uint256","name":"tokenDeposit","type":"uint256"},{"internalType":"uint256","name":"softCap","type":"uint256"},{"internalType":"uint256","name":"hardCap","type":"uint256"},{"internalType":"uint256","name":"max","type":"uint256"},{"internalType":"uint256","name":"min","type":"uint256"},{"internalType":"uint112","name":"start","type":"uint112"},{"internalType":"uint112","name":"end","type":"uint112"},{"internalType":"uint32","name":"liquidityBps","type":"uint32"},{"internalType":"uint32","name":"launchIncreaseBps","type":"uint32"},{"internalType":"uint256","name":"seederRaisedWei","type":"uint256"},{"internalType":"uint32","name":"seederPremiumBps","type":"uint32"}],"internalType":"struct Presale.PresaleOptions","name":"options","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"refund","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unlockClaim","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"contributor","type":"address"}],"name":"userTokens","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]

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

-----Decoded View---------------
Arg [0] : _weth (address): 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2
Arg [1] : _token (address): 0x99999999999997fceB5549c58aB66dF52385ca4d
Arg [2] : _uniswapV2Router02 (address): 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
Arg [3] : _options (tuple): System.Collections.Generic.List`1[Nethereum.ABI.FunctionEncoding.ParameterOutput]

-----Encoded View---------------
14 Constructor Arguments found :
Arg [0] : 000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2
Arg [1] : 00000000000000000000000099999999999997fceb5549c58ab66df52385ca4d
Arg [2] : 0000000000000000000000007a250d5630b4cf539739df2c5dacb4c659f2488d
Arg [3] : 000000000000000000000000000000000000000003225d7d5d947c640a000000
Arg [4] : 00000000000000000000000000000000000000000000000195ece006e02d0000
Arg [5] : 000000000000000000000000000000000000000000000004c1c6a014a0870000
Arg [6] : 0000000000000000000000000000000000000000000000001bc16d674ec80000
Arg [7] : 000000000000000000000000000000000000000000000000002386f26fc10000
Arg [8] : 000000000000000000000000000000000000000000000000000000006679ec60
Arg [9] : 00000000000000000000000000000000000000000000000000000000667c8f60
Arg [10] : 000000000000000000000000000000000000000000000000000000000000101c
Arg [11] : 00000000000000000000000000000000000000000000000000000000000003e8
Arg [12] : 00000000000000000000000000000000000000000000000028a97379e7e50000
Arg [13] : 0000000000000000000000000000000000000000000000000000000000000bb8

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