Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE

More Options

• Is this a proxy?
• Similar
• Compare

// SPDX-FileCopyrightText: 2024 Toucan Labs
//
// SPDX-License-Identifier: UNLICENSED

// If you encounter a vulnerability or an issue, please contact <[email protected]> or visit security.toucan.earth
pragma solidity 0.8.14;

import {IERC721} from '@openzeppelin/contracts/token/ERC721/ERC721.sol';

import {NFTCarbonExtension} from './NFTCarbonExtension.sol';

interface IFxGenArt721 is IERC721 {
    // It returns the current supply
    // https://github.com/fxhash/fxhash-evm-core/blob/62bac5f71ebb43faea2f84d2838ebdce85b94f32/src/tokens/FxGenArt721.sol#L62
    function totalSupply() external view returns (uint96);
}

contract FxHashNFTCarbonExtension is NFTCarbonExtension {
    /// @dev Version-related parameters. VERSION keeps track of production
    /// releases. VERSION_RELEASE_CANDIDATE keeps track of iterations
    /// of a VERSION in our staging environment.
    string public constant VERSION = '1.0.0';
    uint256 public constant VERSION_RELEASE_CANDIDATE = 2;

    /// @custom:oz-upgrades-unsafe-allow constructor
    constructor(address pool_) NFTCarbonExtension(pool_) {}

    function initialize(
        uint256 initialPoolTokenAllocation_,
        address erc721_,
        address[] calldata accounts,
        bytes32[] calldata roles
    ) external initializer {
        __NFTCarbonExtension_initialize(
            initialPoolTokenAllocation_,
            erc721_,
            accounts,
            roles
        );
    }

    function _getTotalSupply() internal view override returns (uint256) {
        return IFxGenArt721(address(erc721)).totalSupply();
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (access/AccessControl.sol)

pragma solidity ^0.8.0;

import "./IAccessControlUpgradeable.sol";
import "../utils/ContextUpgradeable.sol";
import "../utils/StringsUpgradeable.sol";
import "../utils/introspection/ERC165Upgradeable.sol";
import "../proxy/utils/Initializable.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:
 *
 * ```
 * 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}:
 *
 * ```
 * 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.
 */
abstract contract AccessControlUpgradeable is Initializable, ContextUpgradeable, IAccessControlUpgradeable, ERC165Upgradeable {
    function __AccessControl_init() internal onlyInitializing {
    }

    function __AccessControl_init_unchained() internal onlyInitializing {
    }
    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(IAccessControlUpgradeable).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 ",
                        StringsUpgradeable.toHexString(uint160(account), 20),
                        " is missing role ",
                        StringsUpgradeable.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.
     */
    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.
     */
    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`.
     */
    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.
     *
     * [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.
     */
    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.
     */
    function _revokeRole(bytes32 role, address account) internal virtual {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;
}

// 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 IAccessControlUpgradeable {
    /**
     * @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 v4.5.0) (interfaces/draft-IERC1822.sol)

pragma solidity ^0.8.0;

/**
 * @dev ERC1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified
 * proxy whose upgrades are fully controlled by the current implementation.
 */
interface IERC1822ProxiableUpgradeable {
    /**
     * @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation
     * address.
     *
     * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
     * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
     * function revert if invoked through a proxy.
     */
    function proxiableUUID() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (proxy/beacon/IBeacon.sol)

pragma solidity ^0.8.0;

/**
 * @dev This is the interface that {BeaconProxy} expects of its beacon.
 */
interface IBeaconUpgradeable {
    /**
     * @dev Must return an address that can be used as a delegate call target.
     *
     * {BeaconProxy} will check that this address is a contract.
     */
    function implementation() external view returns (address);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (proxy/ERC1967/ERC1967Upgrade.sol)

pragma solidity ^0.8.2;

import "../beacon/IBeaconUpgradeable.sol";
import "../../interfaces/draft-IERC1822Upgradeable.sol";
import "../../utils/AddressUpgradeable.sol";
import "../../utils/StorageSlotUpgradeable.sol";
import "../utils/Initializable.sol";

/**
 * @dev This abstract contract provides getters and event emitting update functions for
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
 *
 * _Available since v4.1._
 *
 * @custom:oz-upgrades-unsafe-allow delegatecall
 */
abstract contract ERC1967UpgradeUpgradeable is Initializable {
    function __ERC1967Upgrade_init() internal onlyInitializing {
    }

    function __ERC1967Upgrade_init_unchained() internal onlyInitializing {
    }
    // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1
    bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;

    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev Emitted when the implementation is upgraded.
     */
    event Upgraded(address indexed implementation);

    /**
     * @dev Returns the current implementation address.
     */
    function _getImplementation() internal view returns (address) {
        return StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        require(AddressUpgradeable.isContract(newImplementation), "ERC1967: new implementation is not a contract");
        StorageSlotUpgradeable.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
    }

    /**
     * @dev Perform implementation upgrade
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Perform implementation upgrade with additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCall(
        address newImplementation,
        bytes memory data,
        bool forceCall
    ) internal {
        _upgradeTo(newImplementation);
        if (data.length > 0 || forceCall) {
            _functionDelegateCall(newImplementation, data);
        }
    }

    /**
     * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call.
     *
     * Emits an {Upgraded} event.
     */
    function _upgradeToAndCallUUPS(
        address newImplementation,
        bytes memory data,
        bool forceCall
    ) internal {
        // Upgrades from old implementations will perform a rollback test. This test requires the new
        // implementation to upgrade back to the old, non-ERC1822 compliant, implementation. Removing
        // this special case will break upgrade paths from old UUPS implementation to new ones.
        if (StorageSlotUpgradeable.getBooleanSlot(_ROLLBACK_SLOT).value) {
            _setImplementation(newImplementation);
        } else {
            try IERC1822ProxiableUpgradeable(newImplementation).proxiableUUID() returns (bytes32 slot) {
                require(slot == _IMPLEMENTATION_SLOT, "ERC1967Upgrade: unsupported proxiableUUID");
            } catch {
                revert("ERC1967Upgrade: new implementation is not UUPS");
            }
            _upgradeToAndCall(newImplementation, data, forceCall);
        }
    }

    /**
     * @dev Storage slot with the admin of the contract.
     * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

    /**
     * @dev Emitted when the admin account has changed.
     */
    event AdminChanged(address previousAdmin, address newAdmin);

    /**
     * @dev Returns the current admin.
     */
    function _getAdmin() internal view returns (address) {
        return StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value;
    }

    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        require(newAdmin != address(0), "ERC1967: new admin is the zero address");
        StorageSlotUpgradeable.getAddressSlot(_ADMIN_SLOT).value = newAdmin;
    }

    /**
     * @dev Changes the admin of the proxy.
     *
     * Emits an {AdminChanged} event.
     */
    function _changeAdmin(address newAdmin) internal {
        emit AdminChanged(_getAdmin(), newAdmin);
        _setAdmin(newAdmin);
    }

    /**
     * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.
     * This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor.
     */
    bytes32 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;

    /**
     * @dev Emitted when the beacon is upgraded.
     */
    event BeaconUpgraded(address indexed beacon);

    /**
     * @dev Returns the current beacon.
     */
    function _getBeacon() internal view returns (address) {
        return StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value;
    }

    /**
     * @dev Stores a new beacon in the EIP1967 beacon slot.
     */
    function _setBeacon(address newBeacon) private {
        require(AddressUpgradeable.isContract(newBeacon), "ERC1967: new beacon is not a contract");
        require(
            AddressUpgradeable.isContract(IBeaconUpgradeable(newBeacon).implementation()),
            "ERC1967: beacon implementation is not a contract"
        );
        StorageSlotUpgradeable.getAddressSlot(_BEACON_SLOT).value = newBeacon;
    }

    /**
     * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does
     * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that).
     *
     * Emits a {BeaconUpgraded} event.
     */
    function _upgradeBeaconToAndCall(
        address newBeacon,
        bytes memory data,
        bool forceCall
    ) internal {
        _setBeacon(newBeacon);
        emit BeaconUpgraded(newBeacon);
        if (data.length > 0 || forceCall) {
            _functionDelegateCall(IBeaconUpgradeable(newBeacon).implementation(), data);
        }
    }

    /**
     * @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) private returns (bytes memory) {
        require(AddressUpgradeable.isContract(target), "Address: delegate call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return AddressUpgradeable.verifyCallResult(success, returndata, "Address: low-level delegate call failed");
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (proxy/utils/Initializable.sol)

pragma solidity ^0.8.2;

import "../../utils/AddressUpgradeable.sol";

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
 * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
 * case an upgrade adds a module that needs to be initialized.
 *
 * For example:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * contract MyToken is ERC20Upgradeable {
 *     function initialize() initializer public {
 *         __ERC20_init("MyToken", "MTK");
 *     }
 * }
 * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
 *     function initializeV2() reinitializer(2) public {
 *         __ERC20Permit_init("MyToken");
 *     }
 * }
 * ```
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
 * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() {
 *     _disableInitializers();
 * }
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     * @custom:oz-retyped-from bool
     */
    uint8 private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint8 version);

    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts. Equivalent to `reinitializer(1)`.
     */
    modifier initializer() {
        bool isTopLevelCall = _setInitializedVersion(1);
        if (isTopLevelCall) {
            _initializing = true;
        }
        _;
        if (isTopLevelCall) {
            _initializing = false;
            emit Initialized(1);
        }
    }

    /**
     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
     * used to initialize parent contracts.
     *
     * `initializer` is equivalent to `reinitializer(1)`, so a reinitializer may be used after the original
     * initialization step. This is essential to configure modules that are added through upgrades and that require
     * initialization.
     *
     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
     * a contract, executing them in the right order is up to the developer or operator.
     */
    modifier reinitializer(uint8 version) {
        bool isTopLevelCall = _setInitializedVersion(version);
        if (isTopLevelCall) {
            _initializing = true;
        }
        _;
        if (isTopLevelCall) {
            _initializing = false;
            emit Initialized(version);
        }
    }

    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} and {reinitializer} modifiers, directly or indirectly.
     */
    modifier onlyInitializing() {
        require(_initializing, "Initializable: contract is not initializing");
        _;
    }

    /**
     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called
     * through proxies.
     */
    function _disableInitializers() internal virtual {
        _setInitializedVersion(type(uint8).max);
    }

    function _setInitializedVersion(uint8 version) private returns (bool) {
        // If the contract is initializing we ignore whether _initialized is set in order to support multiple
        // inheritance patterns, but we only do this in the context of a constructor, and for the lowest level
        // of initializers, because in other contexts the contract may have been reentered.
        if (_initializing) {
            require(
                version == 1 && !AddressUpgradeable.isContract(address(this)),
                "Initializable: contract is already initialized"
            );
            return false;
        } else {
            require(_initialized < version, "Initializable: contract is already initialized");
            _initialized = version;
            return true;
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (proxy/utils/UUPSUpgradeable.sol)

pragma solidity ^0.8.0;

import "../../interfaces/draft-IERC1822Upgradeable.sol";
import "../ERC1967/ERC1967UpgradeUpgradeable.sol";
import "./Initializable.sol";

/**
 * @dev An upgradeability mechanism designed for UUPS proxies. The functions included here can perform an upgrade of an
 * {ERC1967Proxy}, when this contract is set as the implementation behind such a proxy.
 *
 * A security mechanism ensures that an upgrade does not turn off upgradeability accidentally, although this risk is
 * reinstated if the upgrade retains upgradeability but removes the security mechanism, e.g. by replacing
 * `UUPSUpgradeable` with a custom implementation of upgrades.
 *
 * The {_authorizeUpgrade} function must be overridden to include access restriction to the upgrade mechanism.
 *
 * _Available since v4.1._
 */
abstract contract UUPSUpgradeable is Initializable, IERC1822ProxiableUpgradeable, ERC1967UpgradeUpgradeable {
    function __UUPSUpgradeable_init() internal onlyInitializing {
    }

    function __UUPSUpgradeable_init_unchained() internal onlyInitializing {
    }
    /// @custom:oz-upgrades-unsafe-allow state-variable-immutable state-variable-assignment
    address private immutable __self = address(this);

    /**
     * @dev Check that the execution is being performed through a delegatecall call and that the execution context is
     * a proxy contract with an implementation (as defined in ERC1967) pointing to self. This should only be the case
     * for UUPS and transparent proxies that are using the current contract as their implementation. Execution of a
     * function through ERC1167 minimal proxies (clones) would not normally pass this test, but is not guaranteed to
     * fail.
     */
    modifier onlyProxy() {
        require(address(this) != __self, "Function must be called through delegatecall");
        require(_getImplementation() == __self, "Function must be called through active proxy");
        _;
    }

    /**
     * @dev Check that the execution is not being performed through a delegate call. This allows a function to be
     * callable on the implementing contract but not through proxies.
     */
    modifier notDelegated() {
        require(address(this) == __self, "UUPSUpgradeable: must not be called through delegatecall");
        _;
    }

    /**
     * @dev Implementation of the ERC1822 {proxiableUUID} function. This returns the storage slot used by the
     * implementation. It is used to validate that the this implementation remains valid after an upgrade.
     *
     * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
     * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
     * function revert if invoked through a proxy. This is guaranteed by the `notDelegated` modifier.
     */
    function proxiableUUID() external view virtual override notDelegated returns (bytes32) {
        return _IMPLEMENTATION_SLOT;
    }

    /**
     * @dev Upgrade the implementation of the proxy to `newImplementation`.
     *
     * Calls {_authorizeUpgrade}.
     *
     * Emits an {Upgraded} event.
     */
    function upgradeTo(address newImplementation) external virtual onlyProxy {
        _authorizeUpgrade(newImplementation);
        _upgradeToAndCallUUPS(newImplementation, new bytes(0), false);
    }

    /**
     * @dev Upgrade the implementation of the proxy to `newImplementation`, and subsequently execute the function call
     * encoded in `data`.
     *
     * Calls {_authorizeUpgrade}.
     *
     * Emits an {Upgraded} event.
     */
    function upgradeToAndCall(address newImplementation, bytes memory data) external payable virtual onlyProxy {
        _authorizeUpgrade(newImplementation);
        _upgradeToAndCallUUPS(newImplementation, data, true);
    }

    /**
     * @dev Function that should revert when `msg.sender` is not authorized to upgrade the contract. Called by
     * {upgradeTo} and {upgradeToAndCall}.
     *
     * Normally, this function will use an xref:access.adoc[access control] modifier such as {Ownable-onlyOwner}.
     *
     * ```solidity
     * function _authorizeUpgrade(address) internal override onlyOwner {}
     * ```
     */
    function _authorizeUpgrade(address newImplementation) internal virtual;

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/Pausable.sol)

pragma solidity ^0.8.0;

import "../utils/ContextUpgradeable.sol";
import "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract PausableUpgradeable is Initializable, ContextUpgradeable {
    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    function __Pausable_init() internal onlyInitializing {
        __Pausable_init_unchained();
    }

    function __Pausable_init_unchained() internal onlyInitializing {
        _paused = false;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        require(!paused(), "Pausable: paused");
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        require(paused(), "Pausable: not paused");
        _;
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)

pragma solidity ^0.8.1;

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

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

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

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "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");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(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) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason 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 {
            // 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

                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;
import "../proxy/utils/Initializable.sol";

/**
 * @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 ContextUpgradeable is Initializable {
    function __Context_init() internal onlyInitializing {
    }

    function __Context_init_unchained() internal onlyInitializing {
    }
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

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

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

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

pragma solidity ^0.8.0;

import "./IERC165Upgradeable.sol";
import "../../proxy/utils/Initializable.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 ERC165Upgradeable is Initializable, IERC165Upgradeable {
    function __ERC165_init() internal onlyInitializing {
    }

    function __ERC165_init_unchained() internal onlyInitializing {
    }
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165Upgradeable).interfaceId;
    }

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

// 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 IERC165Upgradeable {
    /**
     * @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 v4.4.1 (utils/StorageSlot.sol)

pragma solidity ^0.8.0;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
 */
library StorageSlotUpgradeable {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        assembly {
            r.slot := slot
        }
    }
}

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

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library StringsUpgradeable {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @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] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }
}

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

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);
}

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

pragma solidity ^0.8.0;

import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./extensions/IERC721Metadata.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/Strings.sol";
import "../../utils/introspection/ERC165.sol";

/**
 * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
 * the Metadata extension, but not including the Enumerable extension, which is available separately as
 * {ERC721Enumerable}.
 */
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
    using Address for address;
    using Strings for uint256;

    // Token name
    string private _name;

    // Token symbol
    string private _symbol;

    // Mapping from token ID to owner address
    mapping(uint256 => address) private _owners;

    // Mapping owner address to token count
    mapping(address => uint256) private _balances;

    // Mapping from token ID to approved address
    mapping(uint256 => address) private _tokenApprovals;

    // Mapping from owner to operator approvals
    mapping(address => mapping(address => bool)) private _operatorApprovals;

    /**
     * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
        return
            interfaceId == type(IERC721).interfaceId ||
            interfaceId == type(IERC721Metadata).interfaceId ||
            super.supportsInterface(interfaceId);
    }

    /**
     * @dev See {IERC721-balanceOf}.
     */
    function balanceOf(address owner) public view virtual override returns (uint256) {
        require(owner != address(0), "ERC721: balance query for the zero address");
        return _balances[owner];
    }

    /**
     * @dev See {IERC721-ownerOf}.
     */
    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        address owner = _owners[tokenId];
        require(owner != address(0), "ERC721: owner query for nonexistent token");
        return owner;
    }

    /**
     * @dev See {IERC721Metadata-name}.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev See {IERC721Metadata-symbol}.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev See {IERC721Metadata-tokenURI}.
     */
    function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
        require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");

        string memory baseURI = _baseURI();
        return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
    }

    /**
     * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
     * token will be the concatenation of the `baseURI` and the `tokenId`. Empty
     * by default, can be overridden in child contracts.
     */
    function _baseURI() internal view virtual returns (string memory) {
        return "";
    }

    /**
     * @dev See {IERC721-approve}.
     */
    function approve(address to, uint256 tokenId) public virtual override {
        address owner = ERC721.ownerOf(tokenId);
        require(to != owner, "ERC721: approval to current owner");

        require(
            _msgSender() == owner || isApprovedForAll(owner, _msgSender()),
            "ERC721: approve caller is not owner nor approved for all"
        );

        _approve(to, tokenId);
    }

    /**
     * @dev See {IERC721-getApproved}.
     */
    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        require(_exists(tokenId), "ERC721: approved query for nonexistent token");

        return _tokenApprovals[tokenId];
    }

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) public virtual override {
        _setApprovalForAll(_msgSender(), operator, approved);
    }

    /**
     * @dev See {IERC721-isApprovedForAll}.
     */
    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
        return _operatorApprovals[owner][operator];
    }

    /**
     * @dev See {IERC721-transferFrom}.
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        //solhint-disable-next-line max-line-length
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");

        _transfer(from, to, tokenId);
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) public virtual override {
        safeTransferFrom(from, to, tokenId, "");
    }

    /**
     * @dev See {IERC721-safeTransferFrom}.
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) public virtual override {
        require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
        _safeTransfer(from, to, tokenId, _data);
    }

    /**
     * @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.
     *
     * `_data` is additional data, it has no specified format and it is sent in call to `to`.
     *
     * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
     * implement alternative mechanisms to perform token transfer, such as signature-based.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `tokenId` token must exist and be owned by `from`.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeTransfer(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) internal virtual {
        _transfer(from, to, tokenId);
        require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
    }

    /**
     * @dev Returns whether `tokenId` exists.
     *
     * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
     *
     * Tokens start existing when they are minted (`_mint`),
     * and stop existing when they are burned (`_burn`).
     */
    function _exists(uint256 tokenId) internal view virtual returns (bool) {
        return _owners[tokenId] != address(0);
    }

    /**
     * @dev Returns whether `spender` is allowed to manage `tokenId`.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     */
    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
        require(_exists(tokenId), "ERC721: operator query for nonexistent token");
        address owner = ERC721.ownerOf(tokenId);
        return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);
    }

    /**
     * @dev Safely mints `tokenId` and transfers it to `to`.
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
     *
     * Emits a {Transfer} event.
     */
    function _safeMint(address to, uint256 tokenId) internal virtual {
        _safeMint(to, tokenId, "");
    }

    /**
     * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
     */
    function _safeMint(
        address to,
        uint256 tokenId,
        bytes memory _data
    ) internal virtual {
        _mint(to, tokenId);
        require(
            _checkOnERC721Received(address(0), to, tokenId, _data),
            "ERC721: transfer to non ERC721Receiver implementer"
        );
    }

    /**
     * @dev Mints `tokenId` and transfers it to `to`.
     *
     * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
     *
     * Requirements:
     *
     * - `tokenId` must not exist.
     * - `to` cannot be the zero address.
     *
     * Emits a {Transfer} event.
     */
    function _mint(address to, uint256 tokenId) internal virtual {
        require(to != address(0), "ERC721: mint to the zero address");
        require(!_exists(tokenId), "ERC721: token already minted");

        _beforeTokenTransfer(address(0), to, tokenId);

        _balances[to] += 1;
        _owners[tokenId] = to;

        emit Transfer(address(0), to, tokenId);

        _afterTokenTransfer(address(0), to, tokenId);
    }

    /**
     * @dev Destroys `tokenId`.
     * The approval is cleared when the token is burned.
     *
     * Requirements:
     *
     * - `tokenId` must exist.
     *
     * Emits a {Transfer} event.
     */
    function _burn(uint256 tokenId) internal virtual {
        address owner = ERC721.ownerOf(tokenId);

        _beforeTokenTransfer(owner, address(0), tokenId);

        // Clear approvals
        _approve(address(0), tokenId);

        _balances[owner] -= 1;
        delete _owners[tokenId];

        emit Transfer(owner, address(0), tokenId);

        _afterTokenTransfer(owner, address(0), tokenId);
    }

    /**
     * @dev Transfers `tokenId` from `from` to `to`.
     *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - `tokenId` token must be owned by `from`.
     *
     * Emits a {Transfer} event.
     */
    function _transfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {
        require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");
        require(to != address(0), "ERC721: transfer to the zero address");

        _beforeTokenTransfer(from, to, tokenId);

        // Clear approvals from the previous owner
        _approve(address(0), tokenId);

        _balances[from] -= 1;
        _balances[to] += 1;
        _owners[tokenId] = to;

        emit Transfer(from, to, tokenId);

        _afterTokenTransfer(from, to, tokenId);
    }

    /**
     * @dev Approve `to` to operate on `tokenId`
     *
     * Emits a {Approval} event.
     */
    function _approve(address to, uint256 tokenId) internal virtual {
        _tokenApprovals[tokenId] = to;
        emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
    }

    /**
     * @dev Approve `operator` to operate on all of `owner` tokens
     *
     * Emits a {ApprovalForAll} event.
     */
    function _setApprovalForAll(
        address owner,
        address operator,
        bool approved
    ) internal virtual {
        require(owner != operator, "ERC721: approve to caller");
        _operatorApprovals[owner][operator] = approved;
        emit ApprovalForAll(owner, operator, approved);
    }

    /**
     * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
     * The call is not executed if the target address is not a contract.
     *
     * @param from address representing the previous owner of the given token ID
     * @param to target address that will receive the tokens
     * @param tokenId uint256 ID of the token to be transferred
     * @param _data bytes optional data to send along with the call
     * @return bool whether the call correctly returned the expected magic value
     */
    function _checkOnERC721Received(
        address from,
        address to,
        uint256 tokenId,
        bytes memory _data
    ) private returns (bool) {
        if (to.isContract()) {
            try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
                return retval == IERC721Receiver.onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert("ERC721: transfer to non ERC721Receiver implementer");
                } else {
                    assembly {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        } else {
            return true;
        }
    }

    /**
     * @dev Hook that is called before any token transfer. This includes minting
     * and burning.
     *
     * Calling conditions:
     *
     * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
     * transferred to `to`.
     * - When `from` is zero, `tokenId` will be minted for `to`.
     * - When `to` is zero, ``from``'s `tokenId` will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 tokenId
    ) internal virtual {}
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC721.sol";

/**
 * @title ERC-721 Non-Fungible Token Standard, optional metadata extension
 * @dev See https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721Metadata is IERC721 {
    /**
     * @dev Returns the token collection name.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the token collection symbol.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
     */
    function tokenURI(uint256 tokenId) external view returns (string memory);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (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 be 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: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
     *
     * 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 v4.5.0) (utils/Address.sol)

pragma solidity ^0.8.1;

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

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

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

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "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");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(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) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(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) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason 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 {
            // 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

                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 v4.4.1 (utils/Strings.sol)

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

    /**
     * @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] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }
}

// SPDX-FileCopyrightText: 2023 Toucan Labs
//
// SPDX-License-Identifier: UNLICENSED

// If you encounter a vulnerability or an issue, please contact <[email protected]> or visit security.toucan.earth
pragma solidity 0.8.14;

import '@openzeppelin/contracts-upgradeable/access/AccessControlUpgradeable.sol';

abstract contract RoleInitializer is AccessControlUpgradeable {
    function __RoleInitializer_init_unchained(
        address[] calldata accounts,
        bytes32[] calldata roles
    ) internal {
        require(accounts.length == roles.length, 'Array length mismatch');

        __AccessControl_init_unchained();

        bool hasDefaultAdmin = false;
        for (uint256 i = 0; i < accounts.length; ++i) {
            _grantRole(roles[i], accounts[i]);
            if (roles[i] == DEFAULT_ADMIN_ROLE) hasDefaultAdmin = true;
        }
        require(hasDefaultAdmin, 'No admin specified');
    }
}

// SPDX-FileCopyrightText: 2024 Toucan Labs
//
// SPDX-License-Identifier: UNLICENSED

// If you encounter a vulnerability or an issue, please contact <[email protected]> or visit security.toucan.earth
pragma solidity 0.8.14;

import '@openzeppelin/contracts-upgradeable/security/PausableUpgradeable.sol';
import '@openzeppelin/contracts-upgradeable/proxy/utils/UUPSUpgradeable.sol';
import '@openzeppelin/contracts/token/ERC20/IERC20.sol';
import '@openzeppelin/contracts/token/ERC721/IERC721.sol';

import '../bases/RoleInitializer.sol';

abstract contract NFTCarbonExtension is
    RoleInitializer,
    PausableUpgradeable,
    UUPSUpgradeable
{
    /// @custom:oz-upgrades-unsafe-allow state-variable-immutable
    IERC20 public immutable pool;

    /// @dev All roles related to accessing this contract
    bytes32 public constant MANAGER_ROLE = keccak256('MANAGER_ROLE');
    bytes32 public constant PAUSER_ROLE = keccak256('PAUSER_ROLE');

    // Storage
    IERC721 public erc721;
    uint256 public basePoolTokenAllocationPerNFT;
    uint256 public allocatedSupply;
    mapping(uint256 => uint256) internal _tokenIdBalance;
    bool internal allocationStarted;
    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[45] private __gap;

    // Events
    event PoolTokenAllocated(uint256 amount);
    event PoolTokenWithdrawn(uint256 amount);
    event ERC721Set(address erc721);
    event BasePoolTokenAllocationPerNFTSet(uint256 allocation);

    /// @custom:oz-upgrades-unsafe-allow constructor
    constructor(address pool_) {
        require(pool_ != address(0), 'Empty pool address');
        pool = IERC20(pool_);
        _disableInitializers();
    }

    function __NFTCarbonExtension_initialize(
        uint256 basePoolTokenAllocationPerNFT_,
        address erc721_,
        address[] calldata accounts,
        bytes32[] calldata roles
    ) internal {
        __RoleInitializer_init_unchained(accounts, roles);
        __Pausable_init_unchained();
        __UUPSUpgradeable_init_unchained();

        basePoolTokenAllocationPerNFT = basePoolTokenAllocationPerNFT_;
        erc721 = IERC721(erc721_);
    }

    // Admin functions

    function setErc721(address erc721_) public onlyRole(DEFAULT_ADMIN_ROLE) {
        erc721 = IERC721(erc721_);
        emit ERC721Set(erc721_);
    }

    function setBasePoolTokenAllocationPerNFT(uint256 allocation_)
        public
        onlyRole(DEFAULT_ADMIN_ROLE)
    {
        require(!allocationStarted, 'allocation started');
        basePoolTokenAllocationPerNFT = allocation_;
        emit BasePoolTokenAllocationPerNFTSet(allocation_);
    }

    function _authorizeUpgrade(address newImplementation)
        internal
        override
        onlyRole(DEFAULT_ADMIN_ROLE)
    {}

    function pause() external onlyRole(PAUSER_ROLE) {
        super._pause();
    }

    function unpause() external onlyRole(PAUSER_ROLE) {
        super._unpause();
    }

    /** Allows the owner allocate an amount of pool token based on an estimated supply.
     * @notice The caller needs to approve this contract for a sufficient amount of pool
     * tokens before executing it. The method quoteAllocatePoolTokenAmount can be used to get
     * the precise amount needed.
     * @param estimatedSupply Indicates the amount of NFT tokens for which to allocate
     * pool tokens
     *
     */
    function allocatePoolToken(uint256 estimatedSupply)
        external
        onlyRole(MANAGER_ROLE)
    {
        allocationStarted = true;
        allocatedSupply += estimatedSupply;

        uint256 amount = estimatedSupply * basePoolTokenAllocationPerNFT;
        bool success = pool.transferFrom(msg.sender, address(this), amount);
        require(success, 'transfer failed');

        emit PoolTokenAllocated(amount);
    }

    /** Allows the owner to withdraw any exceeding amount of pre-allocated
     * pool tokens.
     * @param supplyToWithdraw the supply to withdraw. It must be less than the
     * allocated supply and at the same time we will not allow withdrawals
     * that violate the carbon backing of the NFTs.
     */
    function withdrawPoolToken(uint256 supplyToWithdraw)
        external
        onlyRole(MANAGER_ROLE)
    {
        uint256 newAllocatedSupply = allocatedSupply - supplyToWithdraw;
        uint256 totalSupply = _getTotalSupply();
        require(newAllocatedSupply >= totalSupply, 'cannot violate backing');

        allocatedSupply = newAllocatedSupply;

        uint256 leftoverTokens = supplyToWithdraw *
            basePoolTokenAllocationPerNFT;
        bool success = pool.transfer(msg.sender, leftoverTokens);
        require(success, 'transfer failed');

        emit PoolTokenWithdrawn(leftoverTokens);
    }

    /// @dev Marketplace-specific contracts need to override this
    /// function to return the final supply of the NFT collection
    /// once a mint has been finalized. In turn this supply variable
    /// is honored by withdrawPoolToken() to ensure that the owner
    /// does not withdraw more tokens than they should.
    function _getTotalSupply() internal view virtual returns (uint256);

    // Permissionless functions

    /** Returns the amount of pool tokens associated to the NFT token id
     * @param tokenId the token id
     * @return balance pool token balance
     */
    function tokenIdBalance(uint256 tokenId)
        public
        view
        returns (uint256 balance)
    {
        require(erc721.ownerOf(tokenId) != address(0), 'non existing token id');
        return _tokenIdBalance[tokenId] + basePoolTokenAllocationPerNFT;
    }

    /** It returns the amount of pool tokens required in the sender account
     * to fulfill an allocation request for the given NFT supply
     * @param estimatedSupply estimated supply for which to allocate tokens
     * @return poolTokenAmount required pool token balance
     */
    function quoteAllocatePoolTokenAmount(uint256 estimatedSupply)
        external
        view
        returns (uint256 poolTokenAmount, bool isSufficientBalance)
    {
        poolTokenAmount = estimatedSupply * basePoolTokenAllocationPerNFT;
        isSufficientBalance = pool.balanceOf(msg.sender) >= poolTokenAmount;
    }

    /** It allows an NFT owner to embed further pool tokens in their NFT
     * @notice The caller needs to approve this contract for a sufficient amount of pool
     * tokens before executing it.
     * @param tokenId the token id where to allocate the pool tokens
     * @param amount amount of pool tokens to associate to the NFT token
     */
    function embed(uint256 tokenId, uint256 amount) external whenNotPaused {
        require(amount > 0, 'invalid amount');
        require(erc721.ownerOf(tokenId) == msg.sender, 'not the owner');

        _tokenIdBalance[tokenId] += amount;

        bool success = pool.transferFrom(msg.sender, address(this), amount);
        require(success, 'transfer failed');
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

[{"inputs":[{"internalType":"address","name":"pool_","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"previousAdmin","type":"address"},{"indexed":false,"internalType":"address","name":"newAdmin","type":"address"}],"name":"AdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"allocation","type":"uint256"}],"name":"BasePoolTokenAllocationPerNFTSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"beacon","type":"address"}],"name":"BeaconUpgraded","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"erc721","type":"address"}],"name":"ERC721Set","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"version","type":"uint8"}],"name":"Initialized","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"PoolTokenAllocated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"PoolTokenWithdrawn","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":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"inputs":[],"name":"DEFAULT_ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MANAGER_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"PAUSER_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"VERSION","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"VERSION_RELEASE_CANDIDATE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"estimatedSupply","type":"uint256"}],"name":"allocatePoolToken","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"allocatedSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"basePoolTokenAllocationPerNFT","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"embed","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"erc721","outputs":[{"internalType":"contract IERC721","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":"uint256","name":"initialPoolTokenAllocation_","type":"uint256"},{"internalType":"address","name":"erc721_","type":"address"},{"internalType":"address[]","name":"accounts","type":"address[]"},{"internalType":"bytes32[]","name":"roles","type":"bytes32[]"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pool","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"proxiableUUID","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"estimatedSupply","type":"uint256"}],"name":"quoteAllocatePoolTokenAmount","outputs":[{"internalType":"uint256","name":"poolTokenAmount","type":"uint256"},{"internalType":"bool","name":"isSufficientBalance","type":"bool"}],"stateMutability":"view","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":"uint256","name":"allocation_","type":"uint256"}],"name":"setBasePoolTokenAllocationPerNFT","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"erc721_","type":"address"}],"name":"setErc721","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":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenIdBalance","outputs":[{"internalType":"uint256","name":"balance","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"}],"name":"upgradeTo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newImplementation","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"upgradeToAndCall","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"supplyToWithdraw","type":"uint256"}],"name":"withdrawPoolToken","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

000000000000000000000000f92f74dd03f9a9e04773ce5ff3bceabb2eb1ddf0

-----Decoded View---------------
Arg [0] : pool_ (address): 0xf92f74Dd03f9A9E04773cE5fF3BCeaBB2eB1dDf0

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000f92f74dd03f9a9e04773ce5ff3bceabb2eb1ddf0