Contract

Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

// SPDX-License-Identifier: MIT
pragma solidity 0.8.19;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {AccessControl} from "@openzeppelin/contracts/access/AccessControl.sol";
import {Address} from "@openzeppelin/contracts/utils/Address.sol";
import {Utils} from "./Utils.sol";

interface IPreSaleDop {
    function rounds(
        uint8 round
    ) external view returns (uint256 startTime, uint256 endTime, uint256 price);

    function purchaseWithClaim(
        address recipient,
        uint8 round,
        uint256 amountUsd
    ) external payable;
}

contract Claims is AccessControl, Utils {
    using SafeERC20 for IERC20;
    using Address for address payable;

    /// @notice Thrown when input arrays length does not match
    error ArgumentsLengthMismatch();

    /// @notice Thrown when no amounts are zero
    error ZeroClaimAmount();

    /// @notice Thrown when input array length is zero
    error InvalidData();

    /// @notice Thrown when zero address is passed while updating to new value
    error ZeroAddress();

    /// @notice Thrown when same value is passed while updating any variable
    error IdenticalValues();

    /// @notice Thrown when claiming before round ends
    error RoundNotEnded();

    /// @notice Thrown when round is not Enabled
    error RoundNotEnabled();

    /// @notice Thrown when CommissionsManager wants to setClaim while claim enable
    error WaitForRoundDisable();

    /// @notice Thrown when rebuying with zero Eth amount
    error AmountEthInvalid();

    /// @notice Thrown when rebuying with zero Usd amount
    error AmountUsdInvalid();

    /// @notice Thrown when all input amount inputs are zero
    error ZeroAmounts();

    /// @notice Returns the identifier of the CommissionsManager role
    bytes32 public constant COMMISSIONS_MANAGER =
        keccak256("COMMISSIONS_MANAGER");

    /// @notice Returns the identifier of the AdminRole role
    bytes32 public constant ADMIN_ROLE = keccak256("ADMIN");

    /// @notice Returns the address of PreSaleDop contract
    IPreSaleDop public dopPreSale;

    /// @notice Returns usdt address
    IERC20 public immutable USDT;

    /// @member amountEth The Eth amount
    /// @member amountUsd The Usd amount
    struct Info {
        uint256 amountEth;
        uint256 amountUsd;
    }

    /// @notice mapping gives amount to claim in each round
    mapping(address => mapping(uint8 => Info)) public toClaim;

    /// @notice mapping stores the access of a round
    mapping(uint8 => bool) public isEnabled;

    /* ========== EVENTS ========== */

    event ClaimSet(
        address[] indexed to,
        uint8 indexed round,
        uint256[] amountsEth,
        uint256[] amountsUsd
    );
    event FundsClaimed(
        address indexed by,
        uint8 indexed round,
        uint256 amountEth,
        uint256 amountUsd
    );
    event RoundEnableUpdated(bool oldAccess, bool newAccess);
    event DopPreSaleUpdated(address oldDopPreSale, address newDopPreSale);

    /// @dev Constructor.
    /// @param usdt The address of usdt contract
    constructor(IERC20 usdt) {
        if (address(usdt) == address(0)) {
            revert ZeroAddress();
        }
        USDT = usdt;
        _setRoleAdmin(ADMIN_ROLE, ADMIN_ROLE);
        _setRoleAdmin(COMMISSIONS_MANAGER, ADMIN_ROLE);
        _grantRole(ADMIN_ROLE, msg.sender);
    }

    /// @notice Updates Eth and Usd amounts to addresses in a given round
    /// @param to The array of addresses
    /// @param round The round value
    /// @param amountsEth The Eth amounts
    /// @param amountsUsd The Usdt amounts
    function setClaim(
        address[] calldata to,
        uint8 round,
        uint256[] calldata amountsEth,
        uint256[] calldata amountsUsd
    ) external onlyRole(COMMISSIONS_MANAGER) {
        if (isEnabled[round]) {
            revert WaitForRoundDisable();
        }
        uint256 toLength = to.length;
        if (toLength == 0) {
            revert InvalidData();
        }
        if (
            toLength != amountsEth.length &&
            amountsEth.length != amountsUsd.length
        ) {
            revert ArgumentsLengthMismatch();
        }
        for (uint256 i; i < toLength; i = uncheckedInc(i)) {
            Info storage infoClaim = toClaim[to[i]][round];
            if (amountsEth[i] > 0) {
                infoClaim.amountEth = amountsEth[i];
            }
            if (amountsUsd[i] > 0) {
                infoClaim.amountUsd = amountsUsd[i];
            }
        }
        emit ClaimSet({
            to: to,
            round: round,
            amountsEth: amountsEth,
            amountsUsd: amountsUsd
        });
    }

    /// @notice Claims the amount in a given round
    /// @param round The round in which you want to claim
    function claim(uint8 round) external {
        _checkRoundAndTime(round);
        Info memory info = toClaim[msg.sender][round];
        if (info.amountEth == 0 && info.amountUsd == 0) {
            revert ZeroClaimAmount();
        }
        delete toClaim[msg.sender][round];
        if (info.amountEth > 0) {
            payable(msg.sender).sendValue(info.amountEth);
        }
        if (info.amountUsd > 0) {
            USDT.safeTransfer(msg.sender, info.amountUsd);
        }
        emit FundsClaimed({
            by: msg.sender,
            round: round,
            amountEth: info.amountEth,
            amountUsd: info.amountUsd
        });
    }

    /// @notice Purchases Dop Token with claim amounts
    /// @param round The amounts of that round will be used
    /// @param amountEth The amountEth is Eth amount you wanna spend
    /// @param amountUsd The amountUsd is Usd amount you wanna spend
    function purchaseWithClaim(
        uint8 round,
        uint256 amountEth,
        uint256 amountUsd
    ) external {
        _checkRoundAndTime(round);
        if (amountEth == 0 && amountUsd == 0) {
            revert ZeroAmounts();
        }
        Info memory info = toClaim[msg.sender][round];
        if (amountEth > info.amountEth) {
            revert AmountEthInvalid();
        }
        if (amountUsd > info.amountUsd) {
            revert AmountUsdInvalid();
        }

        delete toClaim[msg.sender][round];
        USDT.forceApprove(address(dopPreSale), amountUsd);
        dopPreSale.purchaseWithClaim{value: amountEth}(
            msg.sender,
            round,
            amountUsd
        );
        uint256 amountEthExist = info.amountEth - amountEth;
        uint256 amountUsdExist = info.amountUsd - amountUsd;
        if (amountEthExist > 0) {
            payable(msg.sender).sendValue(amountEthExist);
        }
        if (amountUsdExist > 0) {
            USDT.safeTransfer(msg.sender, amountUsdExist);
        }
        emit FundsClaimed({
            by: msg.sender,
            round: round,
            amountEth: amountEthExist,
            amountUsd: amountUsdExist
        });
    }

    function _checkRoundAndTime(uint8 round) internal view {
        if (!isEnabled[round]) {
            revert RoundNotEnabled();
        }
        (, uint256 endTime, ) = dopPreSale.rounds(round);
        if (block.timestamp < endTime) {
            revert RoundNotEnded();
        }
    }

    /// @notice Changes DopPresale contract address
    /// @param dopPreSaleAddress The address of the new PreSaleDop contract
    function updatePreSaleAddress(
        IPreSaleDop dopPreSaleAddress
    ) external onlyRole(ADMIN_ROLE) {
        if (address(dopPreSaleAddress) == address(0)) {
            revert ZeroAddress();
        }
        if (dopPreSale == dopPreSaleAddress) {
            revert IdenticalValues();
        }
        emit DopPreSaleUpdated({
            oldDopPreSale: address(dopPreSale),
            newDopPreSale: address(dopPreSaleAddress)
        });
        dopPreSale = dopPreSaleAddress;
    }

    /// @notice Changes the Claim access of the contract
    /// @param round The round number of which access is changed
    /// @param decision The access decision of the round
    function updateEnable(
        uint8 round,
        bool decision
    ) public onlyRole(COMMISSIONS_MANAGER) {
        bool oldAccess = isEnabled[round];
        if (oldAccess == decision) {
            revert IdenticalValues();
        }
        emit RoundEnableUpdated({oldAccess: oldAccess, newAccess: decision});
        isEnabled[round] = decision;
    }

    receive() external payable {}
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/AccessControl.sol)

pragma solidity ^0.8.0;

import "./IAccessControl.sol";
import "../utils/Context.sol";
import "../utils/Strings.sol";
import "../utils/introspection/ERC165.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```solidity
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```solidity
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it. We recommend using {AccessControlDefaultAdminRules}
 * to enforce additional security measures for this role.
 */
abstract contract AccessControl is Context, IAccessControl, ERC165 {
    struct RoleData {
        mapping(address => bool) members;
        bytes32 adminRole;
    }

    mapping(bytes32 => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with a standardized message including the required role.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     *
     * _Available since v4.1._
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role);
        _;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view virtual override returns (bool) {
        return _roles[role].members[account];
    }

    /**
     * @dev Revert with a standard message if `_msgSender()` is missing `role`.
     * Overriding this function changes the behavior of the {onlyRole} modifier.
     *
     * Format of the revert message is described in {_checkRole}.
     *
     * _Available since v4.6._
     */
    function _checkRole(bytes32 role) internal view virtual {
        _checkRole(role, _msgSender());
    }

    /**
     * @dev Revert with a standard message if `account` is missing `role`.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!hasRole(role, account)) {
            revert(
                string(
                    abi.encodePacked(
                        "AccessControl: account ",
                        Strings.toHexString(account),
                        " is missing role ",
                        Strings.toHexString(uint256(role), 32)
                    )
                )
            );
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleGranted} event.
     */
    function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleRevoked} event.
     */
    function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     *
     * May emit a {RoleRevoked} event.
     */
    function renounceRole(bytes32 role, address account) public virtual override {
        require(account == _msgSender(), "AccessControl: can only renounce roles for self");

        _revokeRole(role, account);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event. Note that unlike {grantRole}, this function doesn't perform any
     * checks on the calling account.
     *
     * May emit a {RoleGranted} event.
     *
     * [WARNING]
     * ====
     * This function should only be called from the constructor when setting
     * up the initial roles for the system.
     *
     * Using this function in any other way is effectively circumventing the admin
     * system imposed by {AccessControl}.
     * ====
     *
     * NOTE: This function is deprecated in favor of {_grantRole}.
     */
    function _setupRole(bytes32 role, address account) internal virtual {
        _grantRole(role, account);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = getRoleAdmin(role);
        _roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleGranted} event.
     */
    function _grantRole(bytes32 role, address account) internal virtual {
        if (!hasRole(role, account)) {
            _roles[role].members[account] = true;
            emit RoleGranted(role, account, _msgSender());
        }
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleRevoked} event.
     */
    function _revokeRole(bytes32 role, address account) internal virtual {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)

pragma solidity ^0.8.0;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     *
     * _Available since v3.1._
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {AccessControl-_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

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

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

// 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) (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/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// 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: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    enum Rounding {
        Down, // Toward negative infinity
        Up, // Toward infinity
        Zero // Toward zero
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds up instead
     * of rounding down.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
     * with further edits by Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod0 := mul(x, y)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1, "Math: mulDiv overflow");

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
            // See https://cs.stackexchange.com/q/138556/92363.

            // Does not overflow because the denominator cannot be zero at this stage in the function.
            uint256 twos = denominator & (~denominator + 1);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
            // in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256, rounded down, of a positive value.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);
        }
    }
}

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

pragma solidity ^0.8.0;

/**
 * @dev Standard signed math utilities missing in the Solidity language.
 */
library SignedMath {
    /**
     * @dev Returns the largest of two signed numbers.
     */
    function max(int256 a, int256 b) internal pure returns (int256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two signed numbers.
     */
    function min(int256 a, int256 b) internal pure returns (int256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two signed numbers without overflow.
     * The result is rounded towards zero.
     */
    function average(int256 a, int256 b) internal pure returns (int256) {
        // Formula from the book "Hacker's Delight"
        int256 x = (a & b) + ((a ^ b) >> 1);
        return x + (int256(uint256(x) >> 255) & (a ^ b));
    }

    /**
     * @dev Returns the absolute unsigned value of a signed value.
     */
    function abs(int256 n) internal pure returns (uint256) {
        unchecked {
            // must be unchecked in order to support `n = type(int256).min`
            return uint256(n >= 0 ? n : -n);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

import "./math/Math.sol";
import "./math/SignedMath.sol";

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `int256` to its ASCII `string` decimal representation.
     */
    function toString(int256 value) internal pure returns (string memory) {
        return string(abi.encodePacked(value < 0 ? "-" : "", toString(SignedMath.abs(value))));
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, Math.log256(value) + 1);
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }

    /**
     * @dev Returns true if the two strings are equal.
     */
    function equal(string memory a, string memory b) internal pure returns (bool) {
        return keccak256(bytes(a)) == keccak256(bytes(b));
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.19;

abstract contract Utils {
    /// @notice A helper function to work with unchecked iterators in loops.
    function uncheckedInc(uint256 i) internal pure returns (uint256 j) {
        unchecked {
            j = i + 1;
        }
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 1000000
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"contract IERC20","name":"usdt","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"AmountEthInvalid","type":"error"},{"inputs":[],"name":"AmountUsdInvalid","type":"error"},{"inputs":[],"name":"ArgumentsLengthMismatch","type":"error"},{"inputs":[],"name":"IdenticalValues","type":"error"},{"inputs":[],"name":"InvalidData","type":"error"},{"inputs":[],"name":"RoundNotEnabled","type":"error"},{"inputs":[],"name":"RoundNotEnded","type":"error"},{"inputs":[],"name":"WaitForRoundDisable","type":"error"},{"inputs":[],"name":"ZeroAddress","type":"error"},{"inputs":[],"name":"ZeroAmounts","type":"error"},{"inputs":[],"name":"ZeroClaimAmount","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address[]","name":"to","type":"address[]"},{"indexed":true,"internalType":"uint8","name":"round","type":"uint8"},{"indexed":false,"internalType":"uint256[]","name":"amountsEth","type":"uint256[]"},{"indexed":false,"internalType":"uint256[]","name":"amountsUsd","type":"uint256[]"}],"name":"ClaimSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"oldDopPreSale","type":"address"},{"indexed":false,"internalType":"address","name":"newDopPreSale","type":"address"}],"name":"DopPreSaleUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"by","type":"address"},{"indexed":true,"internalType":"uint8","name":"round","type":"uint8"},{"indexed":false,"internalType":"uint256","name":"amountEth","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amountUsd","type":"uint256"}],"name":"FundsClaimed","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"previousAdminRole","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"newAdminRole","type":"bytes32"}],"name":"RoleAdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleGranted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleRevoked","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bool","name":"oldAccess","type":"bool"},{"indexed":false,"internalType":"bool","name":"newAccess","type":"bool"}],"name":"RoundEnableUpdated","type":"event"},{"inputs":[],"name":"ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"COMMISSIONS_MANAGER","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"DEFAULT_ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"USDT","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint8","name":"round","type":"uint8"}],"name":"claim","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"dopPreSale","outputs":[{"internalType":"contract IPreSaleDop","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleAdmin","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"grantRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint8","name":"","type":"uint8"}],"name":"isEnabled","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint8","name":"round","type":"uint8"},{"internalType":"uint256","name":"amountEth","type":"uint256"},{"internalType":"uint256","name":"amountUsd","type":"uint256"}],"name":"purchaseWithClaim","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"to","type":"address[]"},{"internalType":"uint8","name":"round","type":"uint8"},{"internalType":"uint256[]","name":"amountsEth","type":"uint256[]"},{"internalType":"uint256[]","name":"amountsUsd","type":"uint256[]"}],"name":"setClaim","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"uint8","name":"","type":"uint8"}],"name":"toClaim","outputs":[{"internalType":"uint256","name":"amountEth","type":"uint256"},{"internalType":"uint256","name":"amountUsd","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint8","name":"round","type":"uint8"},{"internalType":"bool","name":"decision","type":"bool"}],"name":"updateEnable","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IPreSaleDop","name":"dopPreSaleAddress","type":"address"}],"name":"updatePreSaleAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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

000000000000000000000000dac17f958d2ee523a2206206994597c13d831ec7

-----Decoded View---------------
Arg [0] : usdt (address): 0xdAC17F958D2ee523a2206206994597C13D831ec7

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000dac17f958d2ee523a2206206994597c13d831ec7