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// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.17;

import {IHinkal, Dimensions, CircomData} from "./types/IHinkal.sol";
import {IHinkalWrapper} from "./types/IHinkalWrapper.sol";
import {Transferer} from "./Transferer.sol";

/**
 * @title HinkalWrapper
 * @notice This contract is used to wrap Hinkal.transact call and pass sender address to target contract
 */
contract HinkalWrapper is IHinkalWrapper, Transferer {
    IHinkal internal immutable hinkal;
    address public sender;
    uint256 public value;

    constructor(address _hinkal) {
        hinkal = IHinkal(_hinkal);
    }

    function transact(
        uint256[2] calldata a,
        uint256[2][2] calldata b,
        uint256[2] calldata c,
        Dimensions calldata dimensions,
        CircomData calldata circomData
    ) external payable {
        sender = msg.sender;
        value = msg.value;
        hinkal.transactWithExternalAction(a, b, c, dimensions, circomData);
        sender = address(0);
        if (value != 0) value = 0;
    }

    function getETH() public {
        uint256 oldValue = value;
        value = 0;
        transferETH(msg.sender, oldValue);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC20.sol)

pragma solidity ^0.8.0;

import "../token/ERC20/IERC20.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC721.sol)

pragma solidity ^0.8.0;

import "../token/ERC721/IERC721.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (token/ERC20/extensions/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.
 *
 * ==== 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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/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;

    /**
     * @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.encodeWithSelector(token.transfer.selector, 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.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));
    }

    /**
     * @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);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    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");
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
        }
    }

    /**
     * @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.encodeWithSelector(token.approve.selector, spender, value);

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

    /**
     * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
     * Revert on invalid signature.
     */
    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");
        require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation 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).
     *
     * 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.isContract(address(token));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

import "../../utils/introspection/IERC165.sol";

/**
 * @dev Required interface of an ERC721 compliant contract.
 */
interface IERC721 is IERC165 {
    /**
     * @dev Emitted when `tokenId` token is transferred from `from` to `to`.
     */
    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
     */
    event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);

    /**
     * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
     */
    event ApprovalForAll(address indexed owner, address indexed operator, bool approved);

    /**
     * @dev Returns the number of tokens in ``owner``'s account.
     */
    function balanceOf(address owner) external view returns (uint256 balance);

    /**
     * @dev Returns the owner of the `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;

    /**
     * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
     * are aware of the ERC721 protocol to prevent tokens from being forever locked.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function safeTransferFrom(address from, address to, uint256 tokenId) external;

    /**
     * @dev Transfers `tokenId` token from `from` to `to`.
     *
     * WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721
     * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
     * understand this adds an external call which potentially creates a reentrancy vulnerability.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 tokenId) external;

    /**
     * @dev Gives permission to `to` to transfer `tokenId` token to another account.
     * The approval is cleared when the token is transferred.
     *
     * Only a single account can be approved at a time, so approving the zero address clears previous approvals.
     *
     * Requirements:
     *
     * - The caller must own the token or be an approved operator.
     * - `tokenId` must exist.
     *
     * Emits an {Approval} event.
     */
    function approve(address to, uint256 tokenId) external;

    /**
     * @dev Approve or remove `operator` as an operator for the caller.
     * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
     *
     * Requirements:
     *
     * - The `operator` cannot be the caller.
     *
     * Emits an {ApprovalForAll} event.
     */
    function setApprovalForAll(address operator, bool approved) external;

    /**
     * @dev Returns the account approved for `tokenId` token.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function getApproved(uint256 tokenId) external view returns (address operator);

    /**
     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
     *
     * See {setApprovalForAll}
     */
    function isApprovedForAll(address owner, address operator) external view returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)

pragma solidity ^0.8.0;

/**
 * @title ERC721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC721 asset contracts.
 */
interface IERC721Receiver {
    /**
     * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
     * by `operator` from `from`, this function is called.
     *
     * It must return its Solidity selector to confirm the token transfer.
     * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
     *
     * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
     */
    function onERC721Received(
        address operator,
        address from,
        uint256 tokenId,
        bytes calldata data
    ) external returns (bytes4);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [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://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/v0.8.0/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);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.17;

import "@openzeppelin/contracts/interfaces/IERC20.sol";
import "@openzeppelin/contracts/interfaces/IERC721.sol";
import "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "./TransfererBase.sol";

contract Transferer is TransfererBase {
    using SafeERC20 for IERC20;

    function onERC721Received(
        address,
        address,
        uint256,
        bytes calldata
    ) public pure returns (bytes4) {
        return IERC721Receiver.onERC721Received.selector;
    }

    function unsafeApproveERC20Token(
        address _erc20TokenAddress,
        address _to,
        uint256 _value
    ) internal {
        IERC20(_erc20TokenAddress).approve(_to, 0);
        IERC20(_erc20TokenAddress).approve(_to, _value);
    }

    function getERC20Allowance(
        address _erc20TokenAddress,
        address owner,
        address spender
    ) internal view returns (uint256) {
        IERC20 outToken = IERC20(_erc20TokenAddress);
        return outToken.allowance(owner, spender);
    }

    function approveERC721Token(
        address _erc20TokenAddress,
        address _to,
        uint256 _tokenId
    ) internal {
        IERC721(_erc20TokenAddress).approve(_to, _tokenId);
    }

    function approveToken(
        address _erc20TokenAddress,
        address _to,
        uint256 _tokenId,
        uint256 _value
    ) internal {
        if (_tokenId == 0) {
            unsafeApproveERC20Token(_erc20TokenAddress, _to, _value);
        } else {
            approveERC721Token(_erc20TokenAddress, _to, _tokenId);
        }
    }

    function transferERC20TokenFrom(
        address _erc20TokenAddress,
        address _from,
        address _to,
        uint256 _value
    ) internal {
        IERC20(_erc20TokenAddress).safeTransferFrom(_from, _to, _value);
    }

    function transferNftFrom(
        address _erc20TokenAddress,
        address _from,
        address _to,
        uint256 _tokenId
    ) internal {
        IERC721(_erc20TokenAddress).safeTransferFrom(_from, _to, _tokenId);
    }

    function transferERC20TokenOrETH(
        address _erc20TokenAddress,
        address _to,
        uint256 _value
    ) internal {
        if (_erc20TokenAddress == address(0)) {
            transferETH(_to, _value);
        } else {
            transferERC20Token(_erc20TokenAddress, _to, _value);
        }
    }

    function transferToken(
        address _erc20TokenAddress,
        address _to,
        uint256 _value,
        uint256 _tokenId
    ) internal {
        if (_tokenId == 0) {
            transferERC20TokenOrETH(_erc20TokenAddress, _to, _value);
        } else {
            transferNftFrom(_erc20TokenAddress, address(this), _to, _tokenId);
        }
    }

    function multiTransfer(
        address[] memory erc20TokenAddresses,
        address _to,
        uint256[] memory amounts
    ) internal returns (bool) {
        for (uint64 i = 0; i < erc20TokenAddresses.length; i++) {
            if (amounts[i] > 0)
                transferERC20TokenOrETH(
                    erc20TokenAddresses[i],
                    _to,
                    amounts[i]
                );
        }
        return true;
    }

    function transferERC20TokenFromOrCheckETH(
        address _contractAddress,
        address _from,
        address _to,
        uint256 _value
    ) internal {
        if (_contractAddress == address(0)) {
            require(
                msg.value == _value,
                "msg.value doesn't match needed amount"
            );
            if (_to != address(this)) {
                transferETH(_to, _value);
            }
        } else {
            transferERC20TokenFrom(_contractAddress, _from, _to, _value);
        }
    }

    function transferTokenFrom(
        address _erc20TokenAddress,
        address _from,
        address _to,
        uint256 _value,
        uint256 _tokenId
    ) internal {
        if (_tokenId == 0) {
            transferERC20TokenFromOrCheckETH(
                _erc20TokenAddress,
                _from,
                _to,
                _value
            );
        } else {
            transferNftFrom(_erc20TokenAddress, _from, _to, _tokenId);
        }
    }

    function multiTransferFrom(
        address[] memory erc20TokenAddresses,
        address _from,
        address _to,
        uint256[] memory amounts
    ) internal returns (bool) {
        for (uint64 i = 0; i < erc20TokenAddresses.length; i++) {
            if (amounts[i] > 0) {
                transferERC20TokenFromOrCheckETH(
                    erc20TokenAddresses[i],
                    _from,
                    _to,
                    amounts[i]
                );
            }
        }
        return true;
    }

    function getERC20OrETHBalance(
        address _erc20TokenAddress
    ) internal view returns (uint256) {
        if (_erc20TokenAddress == address(0)) {
            return address(this).balance;
        } else {
            IERC20 outToken = IERC20(_erc20TokenAddress);
            return outToken.balanceOf(address(this));
        }
    }

    function getNftBalance(
        address _erc20TokenAddress,
        uint256 tokenId
    ) internal view returns (uint256) {
        IERC721 outToken = IERC721(_erc20TokenAddress);
        try outToken.ownerOf(tokenId) returns (address owner) {
            if (owner == address(this)) return 1;
            else return 0;
        } catch {
            return 0;
        }
    }

    function getBalancesForArrayMemory(
        address[] memory erc20TokenAddresses
    ) internal view returns (uint256[] memory balances) {
        balances = new uint256[](erc20TokenAddresses.length);
        for (uint64 i; i < erc20TokenAddresses.length; i++) {
            balances[i] = getERC20OrETHBalance(erc20TokenAddresses[i]);
        }
    }

    function getBalancesForArrayMemory(
        address[] memory erc20TokenAddresses,
        uint256[] memory tokenIds
    ) internal view returns (uint256[] memory balances) {
        balances = new uint256[](erc20TokenAddresses.length);
        for (uint64 i; i < erc20TokenAddresses.length; i++) {
            if (tokenIds[i] == 0) {
                balances[i] = getERC20OrETHBalance(erc20TokenAddresses[i]);
            } else {
                balances[i] = getNftBalance(
                    erc20TokenAddresses[i],
                    tokenIds[i]
                );
            }
        }
    }

    function getBalancesForArray(
        address[] calldata erc20TokenAddresses
    ) internal view returns (uint256[] memory balances) {
        balances = new uint256[](erc20TokenAddresses.length);
        for (uint64 i; i < erc20TokenAddresses.length; i++) {
            balances[i] = getERC20OrETHBalance(erc20TokenAddresses[i]);
        }
    }

    function getBalancesForArray(
        address[] calldata erc20TokenAddresses,
        uint256[] calldata tokenIds
    ) internal view returns (uint256[] memory balances) {
        balances = new uint256[](erc20TokenAddresses.length);
        for (uint64 i; i < erc20TokenAddresses.length; i++) {
            if (tokenIds[i] == 0) {
                balances[i] = getERC20OrETHBalance(erc20TokenAddresses[i]);
            } else {
                balances[i] = getNftBalance(
                    erc20TokenAddresses[i],
                    tokenIds[i]
                );
            }
        }
    }

    function sendToRelay(
        address relay,
        uint256 actualAmount,
        address erc20TokenAddress
    ) internal {
        if (relay != address(0) && actualAmount > 0) {
            transferERC20TokenOrETH(
                erc20TokenAddress,
                relay,
                uint256(actualAmount)
            );
        }
    }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.17;

import "@openzeppelin/contracts/interfaces/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

contract TransfererBase {
    using SafeERC20 for IERC20;

    function transferETH(address _recepient, uint256 _value) internal {
        (bool success, ) = _recepient.call{value: _value}("");
        require(success, "Transfer Failed");
    }

    function transferERC20Token(
        address _erc20TokenAddress,
        address _to,
        uint256 _value
    ) internal {
        IERC20(_erc20TokenAddress).safeTransfer(_to, _value);
    }

    function approveERC20Token(
        address _erc20TokenAddress,
        address _to,
        uint256 _value
    ) internal {
        IERC20(_erc20TokenAddress).safeApprove(_to, 0);
        IERC20(_erc20TokenAddress).safeApprove(_to, _value);
    }

    function approveUnlimited(
        address _erc20TokenAddress,
        address _to
    ) internal {
        if (
            IERC20(_erc20TokenAddress).allowance(address(this), _to) <
            type(uint256).max / 2
        ) {
            IERC20(_erc20TokenAddress).safeApprove(_to, 0);
            IERC20(_erc20TokenAddress).safeApprove(_to, type(uint256).max);
        }
    }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.6;

import "./StealthAddressStructure.sol";

uint256 constant CIRCOM_P = 21888242871839275222246405745257275088548364400416034343698204186575808495617; // https://docs.circom.io/circom-language/basic-operators/

struct CircomData {
    uint256 rootHashHinkal;
    address[] erc20TokenAddresses;
    uint256[] tokenIds;
    int256[] amountChanges;
    uint256[][] inputNullifiers;
    uint256[][] outCommitments;
    bytes[][] encryptedOutputs;
    uint256[] flatFees;
    uint256 timeStamp;
    StealthAddressStructure stealthAddressStructure;
    uint256 rootHashAccessToken;
    uint256 calldataHash;
    uint16 publicSignalCount;
    address relay;
    address externalAddress;
    uint256 externalActionId;
    bytes externalActionMetadata;
    HookData hookData;
}

struct HookData {
    address preHookContract;
    address hookContract;
    bytes preHookMetadata;
    bytes postHookMetadata;
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.6;

struct Dimensions {
    uint16 tokenNumber;
    uint16 nullifierAmount;
    uint16 outputAmount;
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.6;

import "../types/Dimensions.sol";
import "../types/CircomData.sol";

interface IHinkal {
    event ExternalActionRegistered(address externalActionAddress);

    event ExternalActionRemoved(address externalActionAddress);

    struct ConstructorArgs {
        uint256 levels;
        address poseidon;
        address accessTokenAddress;
        address circomDataBuilderAddress;
        address erc20TokenRegistryAddress;
        address relayStoreAddress;
    }

    function transact(
        uint256[2] calldata a,
        uint256[2][2] calldata b,
        uint256[2] calldata c,
        Dimensions calldata dimensions,
        CircomData calldata circomData
    ) external payable;

    function transactWithExternalAction(
        uint256[2] calldata a,
        uint256[2][2] calldata b,
        uint256[2] calldata c,
        Dimensions calldata dimensions,
        CircomData calldata circomData
    ) external payable;

    function transactWithHook(
        uint256[2] calldata a,
        uint256[2][2] calldata b,
        uint256[2] calldata c,
        Dimensions calldata dimensions,
        CircomData calldata circomData
    ) external payable;

    function transactWithExternalActionAndHook(
        uint256[2] calldata a,
        uint256[2][2] calldata b,
        uint256[2] calldata c,
        Dimensions calldata dimensions,
        CircomData calldata circomData
    ) external payable;
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.17;

interface IHinkalWrapper {
    function sender() external view returns (address);

    function value() external view returns (uint256);

    function getETH() external;
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.6;

struct StealthAddressStructure {
    uint256 extraRandomization;
    uint256 stealthAddress;
    uint256 H0;
    uint256 H1;
}

{
  "optimizer": {
    "enabled": true,
    "runs": 1000
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_hinkal","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"getETH","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"onERC721Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"sender","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256[2]","name":"a","type":"uint256[2]"},{"internalType":"uint256[2][2]","name":"b","type":"uint256[2][2]"},{"internalType":"uint256[2]","name":"c","type":"uint256[2]"},{"components":[{"internalType":"uint16","name":"tokenNumber","type":"uint16"},{"internalType":"uint16","name":"nullifierAmount","type":"uint16"},{"internalType":"uint16","name":"outputAmount","type":"uint16"}],"internalType":"struct Dimensions","name":"dimensions","type":"tuple"},{"components":[{"internalType":"uint256","name":"rootHashHinkal","type":"uint256"},{"internalType":"address[]","name":"erc20TokenAddresses","type":"address[]"},{"internalType":"uint256[]","name":"tokenIds","type":"uint256[]"},{"internalType":"int256[]","name":"amountChanges","type":"int256[]"},{"internalType":"uint256[][]","name":"inputNullifiers","type":"uint256[][]"},{"internalType":"uint256[][]","name":"outCommitments","type":"uint256[][]"},{"internalType":"bytes[][]","name":"encryptedOutputs","type":"bytes[][]"},{"internalType":"uint256[]","name":"flatFees","type":"uint256[]"},{"internalType":"uint256","name":"timeStamp","type":"uint256"},{"components":[{"internalType":"uint256","name":"extraRandomization","type":"uint256"},{"internalType":"uint256","name":"stealthAddress","type":"uint256"},{"internalType":"uint256","name":"H0","type":"uint256"},{"internalType":"uint256","name":"H1","type":"uint256"}],"internalType":"struct StealthAddressStructure","name":"stealthAddressStructure","type":"tuple"},{"internalType":"uint256","name":"rootHashAccessToken","type":"uint256"},{"internalType":"uint256","name":"calldataHash","type":"uint256"},{"internalType":"uint16","name":"publicSignalCount","type":"uint16"},{"internalType":"address","name":"relay","type":"address"},{"internalType":"address","name":"externalAddress","type":"address"},{"internalType":"uint256","name":"externalActionId","type":"uint256"},{"internalType":"bytes","name":"externalActionMetadata","type":"bytes"},{"components":[{"internalType":"address","name":"preHookContract","type":"address"},{"internalType":"address","name":"hookContract","type":"address"},{"internalType":"bytes","name":"preHookMetadata","type":"bytes"},{"internalType":"bytes","name":"postHookMetadata","type":"bytes"}],"internalType":"struct HookData","name":"hookData","type":"tuple"}],"internalType":"struct CircomData","name":"circomData","type":"tuple"}],"name":"transact","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"value","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"}]

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0000000000000000000000002ea81946ff675d5eb88192144ffc1418fa442e28

-----Decoded View---------------
Arg [0] : _hinkal (address): 0x2ea81946fF675d5Eb88192144ffc1418fA442E28

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000002ea81946ff675d5eb88192144ffc1418fa442e28