Keepers

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { EnumerableSet } from '../../data/EnumerableSet.sol';
import { AddressUtils } from '../../utils/AddressUtils.sol';
import { UintUtils } from '../../utils/UintUtils.sol';
import { IAccessControlInternal } from './IAccessControlInternal.sol';
import { AccessControlStorage } from './AccessControlStorage.sol';

/**
 * @title Role-based access control system
 * @dev derived from https://github.com/OpenZeppelin/openzeppelin-contracts (MIT license)
 */
abstract contract AccessControlInternal is IAccessControlInternal {
    using AddressUtils for address;
    using EnumerableSet for EnumerableSet.AddressSet;
    using UintUtils for uint256;

    modifier onlyRole(bytes32 role) {
        _checkRole(role);
        _;
    }

    /*
     * @notice query whether role is assigned to account
     * @param role role to query
     * @param account account to query
     * @return whether role is assigned to account
     */
    function _hasRole(
        bytes32 role,
        address account
    ) internal view virtual returns (bool) {
        return
            AccessControlStorage.layout().roles[role].members.contains(account);
    }

    /**
     * @notice revert if sender does not have given role
     * @param role role to query
     */
    function _checkRole(bytes32 role) internal view virtual {
        _checkRole(role, msg.sender);
    }

    /**
     * @notice revert if given account does not have given role
     * @param role role to query
     * @param account to query
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!_hasRole(role, account)) {
            revert(
                string(
                    abi.encodePacked(
                        'AccessControl: account ',
                        account.toString(),
                        ' is missing role ',
                        uint256(role).toHexString(32)
                    )
                )
            );
        }
    }

    /*
     * @notice query admin role for given role
     * @param role role to query
     * @return admin role
     */
    function _getRoleAdmin(
        bytes32 role
    ) internal view virtual returns (bytes32) {
        return AccessControlStorage.layout().roles[role].adminRole;
    }

    /**
     * @notice set role as admin role
     * @param role role to set
     * @param adminRole admin role to set
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = _getRoleAdmin(role);
        AccessControlStorage.layout().roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    /*
     * @notice assign role to given account
     * @param role role to assign
     * @param account recipient of role assignment
     */
    function _grantRole(bytes32 role, address account) internal virtual {
        AccessControlStorage.layout().roles[role].members.add(account);
        emit RoleGranted(role, account, msg.sender);
    }

    /*
     * @notice unassign role from given account
     * @param role role to unassign
     * @parm account
     */
    function _revokeRole(bytes32 role, address account) internal virtual {
        AccessControlStorage.layout().roles[role].members.remove(account);
        emit RoleRevoked(role, account, msg.sender);
    }

    /**
     * @notice relinquish role
     * @param role role to relinquish
     */
    function _renounceRole(bytes32 role) internal virtual {
        _revokeRole(role, msg.sender);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { EnumerableSet } from '../../data/EnumerableSet.sol';

library AccessControlStorage {
    struct RoleData {
        EnumerableSet.AddressSet members;
        bytes32 adminRole;
    }

    struct Layout {
        mapping(bytes32 => RoleData) roles;
    }

    bytes32 internal constant DEFAULT_ADMIN_ROLE = 0x00;

    bytes32 internal constant STORAGE_SLOT =
        keccak256('solidstate.contracts.storage.AccessControl');

    function layout() internal pure returns (Layout storage l) {
        bytes32 slot = STORAGE_SLOT;
        assembly {
            l.slot := slot
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

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

library AddressUtils {
    using UintUtils for uint256;

    error AddressUtils__InsufficientBalance();
    error AddressUtils__NotContract();
    error AddressUtils__SendValueFailed();

    function toString(address account) internal pure returns (string memory) {
        return uint256(uint160(account)).toHexString(20);
    }

    function isContract(address account) internal view returns (bool) {
        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 0;
    }

    function sendValue(address payable account, uint256 amount) internal {
        (bool success, ) = account.call{ value: amount }('');
        if (!success) revert AddressUtils__SendValueFailed();
    }

    function functionCall(
        address target,
        bytes memory data
    ) internal returns (bytes memory) {
        return
            functionCall(target, data, 'AddressUtils: failed low-level call');
    }

    function functionCall(
        address target,
        bytes memory data,
        string memory error
    ) internal returns (bytes memory) {
        return _functionCallWithValue(target, data, 0, error);
    }

    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return
            functionCallWithValue(
                target,
                data,
                value,
                'AddressUtils: failed low-level call with value'
            );
    }

    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory error
    ) internal returns (bytes memory) {
        if (value > address(this).balance)
            revert AddressUtils__InsufficientBalance();
        return _functionCallWithValue(target, data, value, error);
    }

    /**
     * @notice execute arbitrary external call with limited gas usage and amount of copied return data
     * @dev derived from https://github.com/nomad-xyz/ExcessivelySafeCall (MIT License)
     * @param target recipient of call
     * @param gasAmount gas allowance for call
     * @param value native token value to include in call
     * @param maxCopy maximum number of bytes to copy from return data
     * @param data encoded call data
     * @return success whether call is successful
     * @return returnData copied return data
     */
    function excessivelySafeCall(
        address target,
        uint256 gasAmount,
        uint256 value,
        uint16 maxCopy,
        bytes memory data
    ) internal returns (bool success, bytes memory returnData) {
        returnData = new bytes(maxCopy);

        assembly {
            // execute external call via assembly to avoid automatic copying of return data
            success := call(
                gasAmount,
                target,
                value,
                add(data, 0x20),
                mload(data),
                0,
                0
            )

            // determine whether to limit amount of data to copy
            let toCopy := returndatasize()

            if gt(toCopy, maxCopy) {
                toCopy := maxCopy
            }

            // store the length of the copied bytes
            mstore(returnData, toCopy)

            // copy the bytes from returndata[0:toCopy]
            returndatacopy(add(returnData, 0x20), 0, toCopy)
        }
    }

    function _functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory error
    ) private returns (bytes memory) {
        if (!isContract(target)) revert AddressUtils__NotContract();

        (bool success, bytes memory returnData) = target.call{ value: value }(
            data
        );

        if (success) {
            return returnData;
        } else if (returnData.length > 0) {
            assembly {
                let returnData_size := mload(returnData)
                revert(add(32, returnData), returnData_size)
            }
        } else {
            revert(error);
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

address constant CANONICAL_OPERATOR_FILTER_REGISTRY_ADDRESS = 0x000000000000AAeB6D7670E522A718067333cd4E;
address constant CANONICAL_CORI_SUBSCRIPTION = 0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6;

// SPDX-License-Identifier: MIT
pragma solidity 0.8.18;

library ConstantsLib {
    // mint params
    uint256 internal constant MINT_PRICE = 0.5 ether;
    uint256 internal constant ALLOWLSIT_MINT_PRICE = 0.25 ether;

    uint256 internal constant MAX_TICKETS = 20000;
    uint256 internal constant MIN_COMMITMENT_BLOCKS = 4;
    uint256 internal constant MAX_COMMITMENT_BLOCKS = 100;
    uint256 internal constant SPECIAL_TICKETS_COUNT = 10;
    uint256 internal constant SPECIAL_TICKET_MINT_ODDS = 1000;

    // access control
    bytes32 internal constant KEEPERS_TERMS_OPERATOR = keccak256("KEEPERS_TERMS_OPERATOR");
    bytes32 internal constant KEEPERS_LICENSE_OPERATOR = keccak256("KEEPERS_LICENSE_OPERATOR");
    bytes32 internal constant KEEPERS_MINT_OPERATOR = keccak256("KEEPERS_MINT_OPERATOR");

    // token states
    uint256 internal constant TOKEN_STATE_UNCONVERTED = 0;
    uint256 internal constant TOKEN_STATE_USER_CONVERTED = 1;
    uint256 internal constant TOKEN_STATE_ADMIN_CONVERTED = 2;

    // room naming
    uint256 internal constant NO_ROOM_NAMING_RIGHTS = 0;
    uint256 internal constant MAX_ROOM_NAME_LENGTH = 40;
    uint256 internal constant MIN_ROOM_ID = 1;

    // traits
    uint256 internal constant MIN_TRAIT_ID = 1;
    uint256 internal constant MAX_TRAIT_ID = 242;

    uint256 internal constant BLACK_BODY_ID = 1;
    uint256 internal constant GLASS_BODY_ID = 10;
    uint256 internal constant MAX_NON_SPECIAL_BODY_ID = 9;

    // rarities
    // bitmap for ultra rare traits 0000001111100000000000111001101110000000000000000100010000001111100000000000000000000000000000000000000000011100000000000000000000100000000000000000000011101010001000000000000000010000000000000000000000000000000000000000000000000000000000001110000000000000
    uint256 internal constant RARITY_ULTRARARE =
        1752737185771013737644568005558321144114900560241663114319964015025618739200;
    // bitmap for rare traits 0011100000000000000111000000000000000000000000000001100111110000000000000000000000000000000000001000000111100000000000000000010010000001000000000000111100010101110000000000001000100100000000000000000000000000000000000101000001000000111111110000000000000000
    uint256 internal constant RARITY_RARE =
        25329712769560669564647724112116350647150594218874243813999282872231118438400;
    // bitmap for uncommon traits 0000010000000100010000000110010000000000000000001010000000000000000000000000000000000000000001010001111000000000000000000000000001010100001111111111000000000000000100001000110111001000000000000000000000000000000000001010111100110111000000000000000000000000
    uint256 internal constant RARITY_UNCOMMON =
        1816763190353297512045086567763279289688669177570068147176572168506815021056;
    // bitmap for common traits 0100000000011011101000000000000001111111111111110000001000000000011111111111111111111111111110100110000000000011111111111111101100001010110000000000000000000000000011110111000000000011111111111111111111111111111111110000000010001000000000000000000000000000
    uint256 internal constant RARITY_COMMON =
        28996831472973116897448113818906002845680828376134306944232972948193012613120;

    // misc
    uint256 internal constant EMPTY_BITMAP = 0;
    string internal constant WHERE_TO_FIND_TERMS =
        "Terms and conditions can be found by calling getTerms() on the Keepers contract.";
}

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

pragma solidity ^0.8.0;

/**
 * @title Counters
 * @author Matt Condon (@shrugs)
 * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
 * of elements in a mapping, issuing ERC721 ids, or counting request ids.
 *
 * Include with `using Counters for Counters.Counter;`
 */
library Counters {
    struct Counter {
        // This variable should never be directly accessed by users of the library: interactions must be restricted to
        // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
        // this feature: see https://github.com/ethereum/solidity/issues/4637
        uint256 _value; // default: 0
    }

    function current(Counter storage counter) internal view returns (uint256) {
        return counter._value;
    }

    function increment(Counter storage counter) internal {
        unchecked {
            counter._value += 1;
        }
    }

    function decrement(Counter storage counter) internal {
        uint256 value = counter._value;
        require(value > 0, "Counter: decrement overflow");
        unchecked {
            counter._value = value - 1;
        }
    }

    function reset(Counter storage counter) internal {
        counter._value = 0;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { Proxy } from '../../Proxy.sol';
import { IDiamondBase } from './IDiamondBase.sol';
import { DiamondBaseStorage } from './DiamondBaseStorage.sol';

/**
 * @title EIP-2535 "Diamond" proxy base contract
 * @dev see https://eips.ethereum.org/EIPS/eip-2535
 */
abstract contract DiamondBase is IDiamondBase, Proxy {
    /**
     * @inheritdoc Proxy
     */
    function _getImplementation()
        internal
        view
        virtual
        override
        returns (address implementation)
    {
        // inline storage layout retrieval uses less gas
        DiamondBaseStorage.Layout storage l;
        bytes32 slot = DiamondBaseStorage.STORAGE_SLOT;
        assembly {
            l.slot := slot
        }

        implementation = address(bytes20(l.facets[msg.sig]));
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

/**
 * @dev derived from https://github.com/mudgen/diamond-2 (MIT license)
 */
library DiamondBaseStorage {
    struct Layout {
        // function selector => (facet address, selector slot position)
        mapping(bytes4 => bytes32) facets;
        // total number of selectors registered
        uint16 selectorCount;
        // array of selector slots with 8 selectors per slot
        mapping(uint256 => bytes32) selectorSlots;
        address fallbackAddress;
    }

    bytes32 internal constant STORAGE_SLOT =
        keccak256('solidstate.contracts.storage.DiamondBase');

    function layout() internal pure returns (Layout storage l) {
        bytes32 slot = STORAGE_SLOT;
        assembly {
            l.slot := slot
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { OwnableInternal } from '../../../access/ownable/OwnableInternal.sol';
import { DiamondBase } from '../base/DiamondBase.sol';
import { DiamondBaseStorage } from '../base/DiamondBaseStorage.sol';
import { IDiamondFallback } from './IDiamondFallback.sol';

/**
 * @title Fallback feature for EIP-2535 "Diamond" proxy
 */
abstract contract DiamondFallback is
    IDiamondFallback,
    OwnableInternal,
    DiamondBase
{
    /**
     * @inheritdoc IDiamondFallback
     */
    function getFallbackAddress()
        external
        view
        returns (address fallbackAddress)
    {
        fallbackAddress = _getFallbackAddress();
    }

    /**
     * @inheritdoc IDiamondFallback
     */
    function setFallbackAddress(address fallbackAddress) external onlyOwner {
        _setFallbackAddress(fallbackAddress);
    }

    /**
     * @inheritdoc DiamondBase
     * @notice query custom fallback address is no implementation is found
     */
    function _getImplementation()
        internal
        view
        virtual
        override
        returns (address implementation)
    {
        implementation = super._getImplementation();

        if (implementation == address(0)) {
            implementation = _getFallbackAddress();
        }
    }

    /**
     * @notice query the address of the fallback implementation
     * @return fallbackAddress address of fallback implementation
     */
    function _getFallbackAddress()
        internal
        view
        virtual
        returns (address fallbackAddress)
    {
        fallbackAddress = DiamondBaseStorage.layout().fallbackAddress;
    }

    /**
     * @notice set the address of the fallback implementation
     * @param fallbackAddress address of fallback implementation
     */
    function _setFallbackAddress(address fallbackAddress) internal virtual {
        DiamondBaseStorage.layout().fallbackAddress = fallbackAddress;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.18;

import { IOperatorFilterRegistry } from "operator-filter-registry/src/IOperatorFilterRegistry.sol";

/**
 * @dev copied from operator-filter-registry/src/upgradeable/OperatorFiltererUpgradeable.sol
 * @dev some of the control flow was removed to remove unnecessary branches
 */
contract DiamondOperatorFilter {
    IOperatorFilterRegistry constant OPERATOR_FILTER_REGISTRY =
        IOperatorFilterRegistry(0x000000000000AAeB6D7670E522A718067333cd4E);

    /// @dev The upgradeable initialize function that should be called when the contract is being upgraded.
    function __OperatorFilterer_init(address subscriptionOrRegistrantToCopy) internal {
        if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) {
            if (!OPERATOR_FILTER_REGISTRY.isRegistered(address(this))) {
                OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy);
            }
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { DiamondBaseStorage } from '../base/DiamondBaseStorage.sol';
import { IDiamondReadable } from './IDiamondReadable.sol';

/**
 * @title EIP-2535 "Diamond" proxy introspection contract
 * @dev derived from https://github.com/mudgen/diamond-2 (MIT license)
 */
abstract contract DiamondReadable is IDiamondReadable {
    /**
     * @inheritdoc IDiamondReadable
     */
    function facets() external view returns (Facet[] memory diamondFacets) {
        DiamondBaseStorage.Layout storage l = DiamondBaseStorage.layout();

        diamondFacets = new Facet[](l.selectorCount);

        uint8[] memory numFacetSelectors = new uint8[](l.selectorCount);
        uint256 numFacets;
        uint256 selectorIndex;

        // loop through function selectors
        for (uint256 slotIndex; selectorIndex < l.selectorCount; slotIndex++) {
            bytes32 slot = l.selectorSlots[slotIndex];

            for (
                uint256 selectorSlotIndex;
                selectorSlotIndex < 8;
                selectorSlotIndex++
            ) {
                selectorIndex++;

                if (selectorIndex > l.selectorCount) {
                    break;
                }

                bytes4 selector = bytes4(slot << (selectorSlotIndex << 5));
                address facet = address(bytes20(l.facets[selector]));

                bool continueLoop;

                for (uint256 facetIndex; facetIndex < numFacets; facetIndex++) {
                    if (diamondFacets[facetIndex].target == facet) {
                        diamondFacets[facetIndex].selectors[
                            numFacetSelectors[facetIndex]
                        ] = selector;
                        // probably will never have more than 256 functions from one facet contract
                        require(numFacetSelectors[facetIndex] < 255);
                        numFacetSelectors[facetIndex]++;
                        continueLoop = true;
                        break;
                    }
                }

                if (continueLoop) {
                    continue;
                }

                diamondFacets[numFacets].target = facet;
                diamondFacets[numFacets].selectors = new bytes4[](
                    l.selectorCount
                );
                diamondFacets[numFacets].selectors[0] = selector;
                numFacetSelectors[numFacets] = 1;
                numFacets++;
            }
        }

        for (uint256 facetIndex; facetIndex < numFacets; facetIndex++) {
            uint256 numSelectors = numFacetSelectors[facetIndex];
            bytes4[] memory selectors = diamondFacets[facetIndex].selectors;

            // setting the number of selectors
            assembly {
                mstore(selectors, numSelectors)
            }
        }

        // setting the number of facets
        assembly {
            mstore(diamondFacets, numFacets)
        }
    }

    /**
     * @inheritdoc IDiamondReadable
     */
    function facetFunctionSelectors(
        address facet
    ) external view returns (bytes4[] memory selectors) {
        DiamondBaseStorage.Layout storage l = DiamondBaseStorage.layout();

        selectors = new bytes4[](l.selectorCount);

        uint256 numSelectors;
        uint256 selectorIndex;

        // loop through function selectors
        for (uint256 slotIndex; selectorIndex < l.selectorCount; slotIndex++) {
            bytes32 slot = l.selectorSlots[slotIndex];

            for (
                uint256 selectorSlotIndex;
                selectorSlotIndex < 8;
                selectorSlotIndex++
            ) {
                selectorIndex++;

                if (selectorIndex > l.selectorCount) {
                    break;
                }

                bytes4 selector = bytes4(slot << (selectorSlotIndex << 5));

                if (facet == address(bytes20(l.facets[selector]))) {
                    selectors[numSelectors] = selector;
                    numSelectors++;
                }
            }
        }

        // set the number of selectors in the array
        assembly {
            mstore(selectors, numSelectors)
        }
    }

    /**
     * @inheritdoc IDiamondReadable
     */
    function facetAddresses()
        external
        view
        returns (address[] memory addresses)
    {
        DiamondBaseStorage.Layout storage l = DiamondBaseStorage.layout();

        addresses = new address[](l.selectorCount);
        uint256 numFacets;
        uint256 selectorIndex;

        for (uint256 slotIndex; selectorIndex < l.selectorCount; slotIndex++) {
            bytes32 slot = l.selectorSlots[slotIndex];

            for (
                uint256 selectorSlotIndex;
                selectorSlotIndex < 8;
                selectorSlotIndex++
            ) {
                selectorIndex++;

                if (selectorIndex > l.selectorCount) {
                    break;
                }

                bytes4 selector = bytes4(slot << (selectorSlotIndex << 5));
                address facet = address(bytes20(l.facets[selector]));

                bool continueLoop;

                for (uint256 facetIndex; facetIndex < numFacets; facetIndex++) {
                    if (facet == addresses[facetIndex]) {
                        continueLoop = true;
                        break;
                    }
                }

                if (continueLoop) {
                    continue;
                }

                addresses[numFacets] = facet;
                numFacets++;
            }
        }

        // set the number of facet addresses in the array
        assembly {
            mstore(addresses, numFacets)
        }
    }

    /**
     * @inheritdoc IDiamondReadable
     */
    function facetAddress(
        bytes4 selector
    ) external view returns (address facet) {
        facet = address(bytes20(DiamondBaseStorage.layout().facets[selector]));
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { OwnableInternal } from '../../../access/ownable/OwnableInternal.sol';
import { IDiamondWritable } from './IDiamondWritable.sol';
import { DiamondWritableInternal } from './DiamondWritableInternal.sol';

/**
 * @title EIP-2535 "Diamond" proxy update contract
 */
abstract contract DiamondWritable is
    IDiamondWritable,
    DiamondWritableInternal,
    OwnableInternal
{
    /**
     * @inheritdoc IDiamondWritable
     */
    function diamondCut(
        FacetCut[] calldata facetCuts,
        address target,
        bytes calldata data
    ) external onlyOwner {
        _diamondCut(facetCuts, target, data);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { AddressUtils } from '../../../utils/AddressUtils.sol';
import { DiamondBaseStorage } from '../base/DiamondBaseStorage.sol';
import { IDiamondWritableInternal } from './IDiamondWritableInternal.sol';

abstract contract DiamondWritableInternal is IDiamondWritableInternal {
    using AddressUtils for address;

    bytes32 private constant CLEAR_ADDRESS_MASK =
        bytes32(uint256(0xffffffffffffffffffffffff));
    bytes32 private constant CLEAR_SELECTOR_MASK =
        bytes32(uint256(0xffffffff << 224));

    /**
     * @notice update functions callable on Diamond proxy
     * @param facetCuts array of structured Diamond facet update data
     * @param target optional recipient of initialization delegatecall
     * @param data optional initialization call data
     */
    function _diamondCut(
        FacetCut[] memory facetCuts,
        address target,
        bytes memory data
    ) internal {
        DiamondBaseStorage.Layout storage l = DiamondBaseStorage.layout();

        unchecked {
            uint256 originalSelectorCount = l.selectorCount;
            uint256 selectorCount = originalSelectorCount;
            bytes32 selectorSlot;

            // Check if last selector slot is not full
            if (selectorCount & 7 > 0) {
                // get last selectorSlot
                selectorSlot = l.selectorSlots[selectorCount >> 3];
            }

            for (uint256 i; i < facetCuts.length; i++) {
                FacetCut memory facetCut = facetCuts[i];
                FacetCutAction action = facetCut.action;

                if (facetCut.selectors.length == 0)
                    revert DiamondWritable__SelectorNotSpecified();

                if (action == FacetCutAction.ADD) {
                    (selectorCount, selectorSlot) = _addFacetSelectors(
                        l,
                        selectorCount,
                        selectorSlot,
                        facetCut
                    );
                } else if (action == FacetCutAction.REPLACE) {
                    _replaceFacetSelectors(l, facetCut);
                } else if (action == FacetCutAction.REMOVE) {
                    (selectorCount, selectorSlot) = _removeFacetSelectors(
                        l,
                        selectorCount,
                        selectorSlot,
                        facetCut
                    );
                }
            }

            if (selectorCount != originalSelectorCount) {
                l.selectorCount = uint16(selectorCount);
            }

            // If last selector slot is not full
            if (selectorCount & 7 > 0) {
                l.selectorSlots[selectorCount >> 3] = selectorSlot;
            }

            emit DiamondCut(facetCuts, target, data);
            _initialize(target, data);
        }
    }

    function _addFacetSelectors(
        DiamondBaseStorage.Layout storage l,
        uint256 selectorCount,
        bytes32 selectorSlot,
        FacetCut memory facetCut
    ) internal returns (uint256, bytes32) {
        unchecked {
            if (
                facetCut.target != address(this) &&
                !facetCut.target.isContract()
            ) revert DiamondWritable__TargetHasNoCode();

            for (uint256 i; i < facetCut.selectors.length; i++) {
                bytes4 selector = facetCut.selectors[i];
                bytes32 oldFacet = l.facets[selector];

                if (address(bytes20(oldFacet)) != address(0))
                    revert DiamondWritable__SelectorAlreadyAdded();

                // add facet for selector
                l.facets[selector] =
                    bytes20(facetCut.target) |
                    bytes32(selectorCount);
                uint256 selectorInSlotPosition = (selectorCount & 7) << 5;

                // clear selector position in slot and add selector
                selectorSlot =
                    (selectorSlot &
                        ~(CLEAR_SELECTOR_MASK >> selectorInSlotPosition)) |
                    (bytes32(selector) >> selectorInSlotPosition);

                // if slot is full then write it to storage
                if (selectorInSlotPosition == 224) {
                    l.selectorSlots[selectorCount >> 3] = selectorSlot;
                    selectorSlot = 0;
                }

                selectorCount++;
            }

            return (selectorCount, selectorSlot);
        }
    }

    function _removeFacetSelectors(
        DiamondBaseStorage.Layout storage l,
        uint256 selectorCount,
        bytes32 selectorSlot,
        FacetCut memory facetCut
    ) internal returns (uint256, bytes32) {
        unchecked {
            if (facetCut.target != address(0))
                revert DiamondWritable__RemoveTargetNotZeroAddress();

            uint256 selectorSlotCount = selectorCount >> 3;
            uint256 selectorInSlotIndex = selectorCount & 7;

            for (uint256 i; i < facetCut.selectors.length; i++) {
                bytes4 selector = facetCut.selectors[i];
                bytes32 oldFacet = l.facets[selector];

                if (address(bytes20(oldFacet)) == address(0))
                    revert DiamondWritable__SelectorNotFound();

                if (address(bytes20(oldFacet)) == address(this))
                    revert DiamondWritable__SelectorIsImmutable();

                if (selectorSlot == 0) {
                    selectorSlotCount--;
                    selectorSlot = l.selectorSlots[selectorSlotCount];
                    selectorInSlotIndex = 7;
                } else {
                    selectorInSlotIndex--;
                }

                bytes4 lastSelector;
                uint256 oldSelectorsSlotCount;
                uint256 oldSelectorInSlotPosition;

                // adding a block here prevents stack too deep error
                {
                    // replace selector with last selector in l.facets
                    lastSelector = bytes4(
                        selectorSlot << (selectorInSlotIndex << 5)
                    );

                    if (lastSelector != selector) {
                        // update last selector slot position info
                        l.facets[lastSelector] =
                            (oldFacet & CLEAR_ADDRESS_MASK) |
                            bytes20(l.facets[lastSelector]);
                    }

                    delete l.facets[selector];
                    uint256 oldSelectorCount = uint16(uint256(oldFacet));
                    oldSelectorsSlotCount = oldSelectorCount >> 3;
                    oldSelectorInSlotPosition = (oldSelectorCount & 7) << 5;
                }

                if (oldSelectorsSlotCount != selectorSlotCount) {
                    bytes32 oldSelectorSlot = l.selectorSlots[
                        oldSelectorsSlotCount
                    ];

                    // clears the selector we are deleting and puts the last selector in its place.
                    oldSelectorSlot =
                        (oldSelectorSlot &
                            ~(CLEAR_SELECTOR_MASK >>
                                oldSelectorInSlotPosition)) |
                        (bytes32(lastSelector) >> oldSelectorInSlotPosition);

                    // update storage with the modified slot
                    l.selectorSlots[oldSelectorsSlotCount] = oldSelectorSlot;
                } else {
                    // clears the selector we are deleting and puts the last selector in its place.
                    selectorSlot =
                        (selectorSlot &
                            ~(CLEAR_SELECTOR_MASK >>
                                oldSelectorInSlotPosition)) |
                        (bytes32(lastSelector) >> oldSelectorInSlotPosition);
                }

                if (selectorInSlotIndex == 0) {
                    delete l.selectorSlots[selectorSlotCount];
                    selectorSlot = 0;
                }
            }

            selectorCount = (selectorSlotCount << 3) | selectorInSlotIndex;

            return (selectorCount, selectorSlot);
        }
    }

    function _replaceFacetSelectors(
        DiamondBaseStorage.Layout storage l,
        FacetCut memory facetCut
    ) internal {
        unchecked {
            if (!facetCut.target.isContract())
                revert DiamondWritable__TargetHasNoCode();

            for (uint256 i; i < facetCut.selectors.length; i++) {
                bytes4 selector = facetCut.selectors[i];
                bytes32 oldFacet = l.facets[selector];
                address oldFacetAddress = address(bytes20(oldFacet));

                if (oldFacetAddress == address(0))
                    revert DiamondWritable__SelectorNotFound();
                if (oldFacetAddress == address(this))
                    revert DiamondWritable__SelectorIsImmutable();
                if (oldFacetAddress == facetCut.target)
                    revert DiamondWritable__ReplaceTargetIsIdentical();

                // replace old facet address
                l.facets[selector] =
                    (oldFacet & CLEAR_ADDRESS_MASK) |
                    bytes20(facetCut.target);
            }
        }
    }

    function _initialize(address target, bytes memory data) private {
        if ((target == address(0)) != (data.length == 0))
            revert DiamondWritable__InvalidInitializationParameters();

        if (target != address(0)) {
            if (target != address(this)) {
                if (!target.isContract())
                    revert DiamondWritable__TargetHasNoCode();
            }

            (bool success, ) = target.delegatecall(data);

            if (!success) {
                assembly {
                    returndatacopy(0, 0, returndatasize())
                    revert(0, returndatasize())
                }
            }
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.18;

import { OwnableInternal } from "@solidstate/contracts/access/ownable/OwnableInternal.sol";
import { IDiamondWritable } from "@solidstate/contracts/proxy/diamond/writable/IDiamondWritable.sol";
import { DiamondWritableInternal } from "@solidstate/contracts/proxy/diamond/writable/DiamondWritableInternal.sol";
import { DiamondWritableRevokableStorage } from "./DiamondWritableRevokableStorage.sol";

/**
 * @title EIP-2535 "Diamond" proxy update contract with built in revokability
 */
abstract contract DiamondWritableRevokable is IDiamondWritable, DiamondWritableInternal, OwnableInternal {
    error UpgradeabilityRevoked();

    /**
     * @inheritdoc IDiamondWritable
     * @dev also checks to ensure upgradeability has not been revoked
     */
    function diamondCut(FacetCut[] calldata facetCuts, address target, bytes calldata data) external onlyOwner {
        if (DiamondWritableRevokableStorage.layout().isUpgradeabiltyRevoked) revert UpgradeabilityRevoked();
        _diamondCut(facetCuts, target, data);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.18;

library DiamondWritableRevokableStorage {
    bytes32 internal constant STORAGE_SLOT = keccak256("keepers.contracts.storage.diamond.writable.revokable");

    struct Layout {
        bool isUpgradeabiltyRevoked;
    }

    function layout() internal pure returns (Layout storage l) {
        bytes32 slot = STORAGE_SLOT;
        assembly {
            l.slot := slot
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { IERC165 } from '../../../interfaces/IERC165.sol';
import { IERC165Base } from './IERC165Base.sol';
import { ERC165BaseInternal } from './ERC165BaseInternal.sol';
import { ERC165BaseStorage } from './ERC165BaseStorage.sol';

/**
 * @title ERC165 implementation
 */
abstract contract ERC165Base is IERC165Base, ERC165BaseInternal {
    /**
     * @inheritdoc IERC165
     */
    function supportsInterface(bytes4 interfaceId) public view returns (bool) {
        return _supportsInterface(interfaceId);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { IERC165BaseInternal } from './IERC165BaseInternal.sol';
import { ERC165BaseStorage } from './ERC165BaseStorage.sol';

/**
 * @title ERC165 implementation
 */
abstract contract ERC165BaseInternal is IERC165BaseInternal {
    /**
     * @notice indicates whether an interface is already supported based on the interfaceId
     * @param interfaceId id of interface to check
     * @return bool indicating whether interface is supported
     */
    function _supportsInterface(
        bytes4 interfaceId
    ) internal view virtual returns (bool) {
        return ERC165BaseStorage.layout().supportedInterfaces[interfaceId];
    }

    /**
     * @notice sets status of interface support
     * @param interfaceId id of interface to set status for
     * @param status boolean indicating whether interface will be set as supported
     */
    function _setSupportsInterface(
        bytes4 interfaceId,
        bool status
    ) internal virtual {
        if (interfaceId == 0xffffffff) revert ERC165Base__InvalidInterfaceId();
        ERC165BaseStorage.layout().supportedInterfaces[interfaceId] = status;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

library ERC165BaseStorage {
    struct Layout {
        mapping(bytes4 => bool) supportedInterfaces;
    }

    bytes32 internal constant STORAGE_SLOT =
        keccak256('solidstate.contracts.storage.ERC165Base');

    function layout() internal pure returns (Layout storage l) {
        bytes32 slot = STORAGE_SLOT;
        assembly {
            l.slot := slot
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

library ERC2981Storage {
    struct Layout {
        // token id -> royalty (denominated in basis points)
        mapping(uint256 => uint16) royaltiesBPS;
        uint16 defaultRoyaltyBPS;
        // token id -> receiver address
        mapping(uint256 => address) royaltyReceivers;
        address defaultRoyaltyReceiver;
    }

    bytes32 internal constant STORAGE_SLOT =
        keccak256('solidstate.contracts.storage.ERC2981');

    function layout() internal pure returns (Layout storage l) {
        bytes32 slot = STORAGE_SLOT;
        assembly {
            l.slot := slot
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

library ERC721MetadataStorage {
    bytes32 internal constant STORAGE_SLOT =
        keccak256('solidstate.contracts.storage.ERC721Metadata');

    struct Layout {
        string name;
        string symbol;
        string baseURI;
        mapping(uint256 => string) tokenURIs;
    }

    function layout() internal pure returns (Layout storage l) {
        bytes32 slot = STORAGE_SLOT;
        assembly {
            l.slot := slot
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

/**
 * @title Set implementation with enumeration functions
 * @dev derived from https://github.com/OpenZeppelin/openzeppelin-contracts (MIT license)
 */
library EnumerableSet {
    error EnumerableSet__IndexOutOfBounds();

    struct Set {
        bytes32[] _values;
        // 1-indexed to allow 0 to signify nonexistence
        mapping(bytes32 => uint256) _indexes;
    }

    struct Bytes32Set {
        Set _inner;
    }

    struct AddressSet {
        Set _inner;
    }

    struct UintSet {
        Set _inner;
    }

    function at(
        Bytes32Set storage set,
        uint256 index
    ) internal view returns (bytes32) {
        return _at(set._inner, index);
    }

    function at(
        AddressSet storage set,
        uint256 index
    ) internal view returns (address) {
        return address(uint160(uint256(_at(set._inner, index))));
    }

    function at(
        UintSet storage set,
        uint256 index
    ) internal view returns (uint256) {
        return uint256(_at(set._inner, index));
    }

    function contains(
        Bytes32Set storage set,
        bytes32 value
    ) internal view returns (bool) {
        return _contains(set._inner, value);
    }

    function contains(
        AddressSet storage set,
        address value
    ) internal view returns (bool) {
        return _contains(set._inner, bytes32(uint256(uint160(value))));
    }

    function contains(
        UintSet storage set,
        uint256 value
    ) internal view returns (bool) {
        return _contains(set._inner, bytes32(value));
    }

    function indexOf(
        Bytes32Set storage set,
        bytes32 value
    ) internal view returns (uint256) {
        return _indexOf(set._inner, value);
    }

    function indexOf(
        AddressSet storage set,
        address value
    ) internal view returns (uint256) {
        return _indexOf(set._inner, bytes32(uint256(uint160(value))));
    }

    function indexOf(
        UintSet storage set,
        uint256 value
    ) internal view returns (uint256) {
        return _indexOf(set._inner, bytes32(value));
    }

    function length(Bytes32Set storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    function length(AddressSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    function length(UintSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    function add(
        Bytes32Set storage set,
        bytes32 value
    ) internal returns (bool) {
        return _add(set._inner, value);
    }

    function add(
        AddressSet storage set,
        address value
    ) internal returns (bool) {
        return _add(set._inner, bytes32(uint256(uint160(value))));
    }

    function add(UintSet storage set, uint256 value) internal returns (bool) {
        return _add(set._inner, bytes32(value));
    }

    function remove(
        Bytes32Set storage set,
        bytes32 value
    ) internal returns (bool) {
        return _remove(set._inner, value);
    }

    function remove(
        AddressSet storage set,
        address value
    ) internal returns (bool) {
        return _remove(set._inner, bytes32(uint256(uint160(value))));
    }

    function remove(
        UintSet storage set,
        uint256 value
    ) internal returns (bool) {
        return _remove(set._inner, bytes32(value));
    }

    function toArray(
        Bytes32Set storage set
    ) internal view returns (bytes32[] memory) {
        return set._inner._values;
    }

    function toArray(
        AddressSet storage set
    ) internal view returns (address[] memory) {
        bytes32[] storage values = set._inner._values;
        address[] storage array;

        assembly {
            array.slot := values.slot
        }

        return array;
    }

    function toArray(
        UintSet storage set
    ) internal view returns (uint256[] memory) {
        bytes32[] storage values = set._inner._values;
        uint256[] storage array;

        assembly {
            array.slot := values.slot
        }

        return array;
    }

    function _at(
        Set storage set,
        uint256 index
    ) private view returns (bytes32) {
        if (index >= set._values.length)
            revert EnumerableSet__IndexOutOfBounds();
        return set._values[index];
    }

    function _contains(
        Set storage set,
        bytes32 value
    ) private view returns (bool) {
        return set._indexes[value] != 0;
    }

    function _indexOf(
        Set storage set,
        bytes32 value
    ) private view returns (uint256) {
        unchecked {
            return set._indexes[value] - 1;
        }
    }

    function _length(Set storage set) private view returns (uint256) {
        return set._values.length;
    }

    function _add(
        Set storage set,
        bytes32 value
    ) private returns (bool status) {
        if (!_contains(set, value)) {
            set._values.push(value);
            set._indexes[value] = set._values.length;
            status = true;
        }
    }

    function _remove(
        Set storage set,
        bytes32 value
    ) private returns (bool status) {
        uint256 valueIndex = set._indexes[value];

        if (valueIndex != 0) {
            unchecked {
                bytes32 last = set._values[set._values.length - 1];

                // move last value to now-vacant index

                set._values[valueIndex - 1] = last;
                set._indexes[last] = valueIndex;
            }
            // clear last index

            set._values.pop();
            delete set._indexes[value];

            status = true;
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @title Partial AccessControl interface needed by internal functions
 */
interface IAccessControlInternal {
    event RoleAdminChanged(
        bytes32 indexed role,
        bytes32 indexed previousAdminRole,
        bytes32 indexed newAdminRole
    );

    event RoleGranted(
        bytes32 indexed role,
        address indexed account,
        address indexed sender
    );

    event RoleRevoked(
        bytes32 indexed role,
        address indexed account,
        address indexed sender
    );
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

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

interface IDiamondBase is IProxy {}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { IDiamondBase } from '../base/IDiamondBase.sol';

interface IDiamondFallback is IDiamondBase {
    /**
     * @notice query the address of the fallback implementation
     * @return fallbackAddress address of fallback implementation
     */
    function getFallbackAddress()
        external
        view
        returns (address fallbackAddress);

    /**
     * @notice set the address of the fallback implementation
     * @param fallbackAddress address of fallback implementation
     */
    function setFallbackAddress(address fallbackAddress) external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

/**
 * @title Diamond proxy introspection interface
 * @dev see https://eips.ethereum.org/EIPS/eip-2535
 */
interface IDiamondReadable {
    struct Facet {
        address target;
        bytes4[] selectors;
    }

    /**
     * @notice get all facets and their selectors
     * @return diamondFacets array of structured facet data
     */
    function facets() external view returns (Facet[] memory diamondFacets);

    /**
     * @notice get all selectors for given facet address
     * @param facet address of facet to query
     * @return selectors array of function selectors
     */
    function facetFunctionSelectors(
        address facet
    ) external view returns (bytes4[] memory selectors);

    /**
     * @notice get addresses of all facets used by diamond
     * @return addresses array of facet addresses
     */
    function facetAddresses()
        external
        view
        returns (address[] memory addresses);

    /**
     * @notice get the address of the facet associated with given selector
     * @param selector function selector to query
     * @return facet facet address (zero address if not found)
     */
    function facetAddress(
        bytes4 selector
    ) external view returns (address facet);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

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

/**
 * @title Diamond proxy upgrade interface
 * @dev see https://eips.ethereum.org/EIPS/eip-2535
 */
interface IDiamondWritable is IDiamondWritableInternal {
    /**
     * @notice update diamond facets and optionally execute arbitrary initialization function
     * @param facetCuts array of structured Diamond facet update data
     * @param target optional target of initialization delegatecall
     * @param data optional initialization function call data
     */
    function diamondCut(
        FacetCut[] calldata facetCuts,
        address target,
        bytes calldata data
    ) external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

interface IDiamondWritableInternal {
    enum FacetCutAction {
        ADD,
        REPLACE,
        REMOVE
    }

    event DiamondCut(FacetCut[] facetCuts, address target, bytes data);

    error DiamondWritable__InvalidInitializationParameters();
    error DiamondWritable__RemoveTargetNotZeroAddress();
    error DiamondWritable__ReplaceTargetIsIdentical();
    error DiamondWritable__SelectorAlreadyAdded();
    error DiamondWritable__SelectorIsImmutable();
    error DiamondWritable__SelectorNotFound();
    error DiamondWritable__SelectorNotSpecified();
    error DiamondWritable__TargetHasNoCode();

    struct FacetCut {
        address target;
        FacetCutAction action;
        bytes4[] selectors;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { IERC165Internal } from './IERC165Internal.sol';

/**
 * @title ERC165 interface registration interface
 * @dev see https://eips.ethereum.org/EIPS/eip-165
 */
interface IERC165 is IERC165Internal {
    /**
     * @notice query whether contract has registered support for given interface
     * @param interfaceId interface id
     * @return bool whether interface is supported
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { IERC165 } from '../../../interfaces/IERC165.sol';
import { IERC165BaseInternal } from './IERC165BaseInternal.sol';

interface IERC165Base is IERC165, IERC165BaseInternal {}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import { IERC165Internal } from '../../../interfaces/IERC165Internal.sol';

interface IERC165BaseInternal is IERC165Internal {
    error ERC165Base__InvalidInterfaceId();
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

/**
 * @title ERC165 interface registration interface
 */
interface IERC165Internal {

}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { IERC173Internal } from './IERC173Internal.sol';

/**
 * @title Contract ownership standard interface
 * @dev see https://eips.ethereum.org/EIPS/eip-173
 */
interface IERC173 is IERC173Internal {
    /**
     * @notice get the ERC173 contract owner
     * @return contract owner
     */
    function owner() external view returns (address);

    /**
     * @notice transfer contract ownership to new account
     * @param account address of new owner
     */
    function transferOwnership(address account) external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

/**
 * @title Partial ERC173 interface needed by internal functions
 */
interface IERC173Internal {
    event OwnershipTransferred(
        address indexed previousOwner,
        address indexed newOwner
    );
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { IERC165 } from './IERC165.sol';
import { IERC2981Internal } from './IERC2981Internal.sol';

/**
 * @title ERC2981 interface
 * @dev see https://eips.ethereum.org/EIPS/eip-2981
 */
interface IERC2981 is IERC2981Internal, IERC165 {
    /**
     * @notice called with the sale price to determine how much royalty is owed and to whom
     * @param tokenId the ERC721 or ERC1155 token id to query for royalty information
     * @param salePrice the sale price of the given asset
     * @return receiever rightful recipient of royalty
     * @return royaltyAmount amount of royalty owed
     */
    function royaltyInfo(
        uint256 tokenId,
        uint256 salePrice
    ) external view returns (address receiever, uint256 royaltyAmount);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

/**
 * @title ERC2981 interface
 */
interface IERC2981Internal {

}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { IERC165 } from './IERC165.sol';
import { IERC721Internal } from './IERC721Internal.sol';

/**
 * @title ERC721 interface
 * @dev see https://eips.ethereum.org/EIPS/eip-721
 */
interface IERC721 is IERC721Internal, IERC165 {
    /**
     * @notice query the balance of given address
     * @return balance quantity of tokens held
     */
    function balanceOf(address account) external view returns (uint256 balance);

    /**
     * @notice query the owner of given token
     * @param tokenId token to query
     * @return owner token owner
     */
    function ownerOf(uint256 tokenId) external view returns (address owner);

    /**
     * @notice transfer token between given addresses, checking for ERC721Receiver implementation if applicable
     * @param from sender of token
     * @param to receiver of token
     * @param tokenId token id
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external payable;

    /**
     * @notice transfer token between given addresses, checking for ERC721Receiver implementation if applicable
     * @param from sender of token
     * @param to receiver of token
     * @param tokenId token id
     * @param data data payload
     */
    function safeTransferFrom(
        address from,
        address to,
        uint256 tokenId,
        bytes calldata data
    ) external payable;

    /**
     * @notice transfer token between given addresses, without checking for ERC721Receiver implementation if applicable
     * @param from sender of token
     * @param to receiver of token
     * @param tokenId token id
     */
    function transferFrom(
        address from,
        address to,
        uint256 tokenId
    ) external payable;

    /**
     * @notice grant approval to given account to spend token
     * @param operator address to be approved
     * @param tokenId token to approve
     */
    function approve(address operator, uint256 tokenId) external payable;

    /**
     * @notice get approval status for given token
     * @param tokenId token to query
     * @return operator address approved to spend token
     */
    function getApproved(
        uint256 tokenId
    ) external view returns (address operator);

    /**
     * @notice grant approval to or revoke approval from given account to spend all tokens held by sender
     * @param operator address to be approved
     * @param status approval status
     */
    function setApprovalForAll(address operator, bool status) external;

    /**
     * @notice query approval status of given operator with respect to given address
     * @param account address to query for approval granted
     * @param operator address to query for approval received
     * @return status whether operator is approved to spend tokens held by account
     */
    function isApprovedForAll(
        address account,
        address operator
    ) external view returns (bool status);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

interface IERC721Enumerable {
    /**
     * @notice get total token supply
     * @return total supply
     */
    function totalSupply() external view returns (uint256);

    /**
     * @notice get token of given owner at given internal storage index
     * @param owner token holder to query
     * @param index position in owner's token list to query
     * @return tokenId id of retrieved token
     */
    function tokenOfOwnerByIndex(
        address owner,
        uint256 index
    ) external view returns (uint256 tokenId);

    /**
     * @notice get token at given internal storage index
     * @param index position in global token list to query
     * @return tokenId id of retrieved token
     */
    function tokenByIndex(
        uint256 index
    ) external view returns (uint256 tokenId);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

/**
 * @title Partial ERC721 interface needed by internal functions
 */
interface IERC721Internal {
    event Transfer(
        address indexed from,
        address indexed to,
        uint256 indexed tokenId
    );

    event Approval(
        address indexed owner,
        address indexed operator,
        uint256 indexed tokenId
    );

    event ApprovalForAll(
        address indexed owner,
        address indexed operator,
        bool approved
    );
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

interface IOperatorFilterRegistry {
    /**
     * @notice Returns true if operator is not filtered for a given token, either by address or codeHash. Also returns
     *         true if supplied registrant address is not registered.
     */
    function isOperatorAllowed(address registrant, address operator) external view returns (bool);

    /**
     * @notice Registers an address with the registry. May be called by address itself or by EIP-173 owner.
     */
    function register(address registrant) external;

    /**
     * @notice Registers an address with the registry and "subscribes" to another address's filtered operators and codeHashes.
     */
    function registerAndSubscribe(address registrant, address subscription) external;

    /**
     * @notice Registers an address with the registry and copies the filtered operators and codeHashes from another
     *         address without subscribing.
     */
    function registerAndCopyEntries(address registrant, address registrantToCopy) external;

    /**
     * @notice Unregisters an address with the registry and removes its subscription. May be called by address itself or by EIP-173 owner.
     *         Note that this does not remove any filtered addresses or codeHashes.
     *         Also note that any subscriptions to this registrant will still be active and follow the existing filtered addresses and codehashes.
     */
    function unregister(address addr) external;

    /**
     * @notice Update an operator address for a registered address - when filtered is true, the operator is filtered.
     */
    function updateOperator(address registrant, address operator, bool filtered) external;

    /**
     * @notice Update multiple operators for a registered address - when filtered is true, the operators will be filtered. Reverts on duplicates.
     */
    function updateOperators(address registrant, address[] calldata operators, bool filtered) external;

    /**
     * @notice Update a codeHash for a registered address - when filtered is true, the codeHash is filtered.
     */
    function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external;

    /**
     * @notice Update multiple codeHashes for a registered address - when filtered is true, the codeHashes will be filtered. Reverts on duplicates.
     */
    function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external;

    /**
     * @notice Subscribe an address to another registrant's filtered operators and codeHashes. Will remove previous
     *         subscription if present.
     *         Note that accounts with subscriptions may go on to subscribe to other accounts - in this case,
     *         subscriptions will not be forwarded. Instead the former subscription's existing entries will still be
     *         used.
     */
    function subscribe(address registrant, address registrantToSubscribe) external;

    /**
     * @notice Unsubscribe an address from its current subscribed registrant, and optionally copy its filtered operators and codeHashes.
     */
    function unsubscribe(address registrant, bool copyExistingEntries) external;

    /**
     * @notice Get the subscription address of a given registrant, if any.
     */
    function subscriptionOf(address addr) external returns (address registrant);

    /**
     * @notice Get the set of addresses subscribed to a given registrant.
     *         Note that order is not guaranteed as updates are made.
     */
    function subscribers(address registrant) external returns (address[] memory);

    /**
     * @notice Get the subscriber at a given index in the set of addresses subscribed to a given registrant.
     *         Note that order is not guaranteed as updates are made.
     */
    function subscriberAt(address registrant, uint256 index) external returns (address);

    /**
     * @notice Copy filtered operators and codeHashes from a different registrantToCopy to addr.
     */
    function copyEntriesOf(address registrant, address registrantToCopy) external;

    /**
     * @notice Returns true if operator is filtered by a given address or its subscription.
     */
    function isOperatorFiltered(address registrant, address operator) external returns (bool);

    /**
     * @notice Returns true if the hash of an address's code is filtered by a given address or its subscription.
     */
    function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool);

    /**
     * @notice Returns true if a codeHash is filtered by a given address or its subscription.
     */
    function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool);

    /**
     * @notice Returns a list of filtered operators for a given address or its subscription.
     */
    function filteredOperators(address addr) external returns (address[] memory);

    /**
     * @notice Returns the set of filtered codeHashes for a given address or its subscription.
     *         Note that order is not guaranteed as updates are made.
     */
    function filteredCodeHashes(address addr) external returns (bytes32[] memory);

    /**
     * @notice Returns the filtered operator at the given index of the set of filtered operators for a given address or
     *         its subscription.
     *         Note that order is not guaranteed as updates are made.
     */
    function filteredOperatorAt(address registrant, uint256 index) external returns (address);

    /**
     * @notice Returns the filtered codeHash at the given index of the list of filtered codeHashes for a given address or
     *         its subscription.
     *         Note that order is not guaranteed as updates are made.
     */
    function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32);

    /**
     * @notice Returns true if an address has registered
     */
    function isRegistered(address addr) external returns (bool);

    /**
     * @dev Convenience method to compute the code hash of an arbitrary contract
     */
    function codeHashOf(address addr) external returns (bytes32);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { IERC173 } from '../../interfaces/IERC173.sol';
import { IOwnableInternal } from './IOwnableInternal.sol';

interface IOwnable is IOwnableInternal, IERC173 {}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { IERC173Internal } from '../../interfaces/IERC173Internal.sol';

interface IOwnableInternal is IERC173Internal {
    error Ownable__NotOwner();
    error Ownable__NotTransitiveOwner();
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

interface IProxy {
    error Proxy__ImplementationIsNotContract();

    fallback() external payable;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { IOwnable } from './IOwnable.sol';
import { ISafeOwnableInternal } from './ISafeOwnableInternal.sol';

interface ISafeOwnable is ISafeOwnableInternal, IOwnable {
    /**
     * @notice get the nominated owner who has permission to call acceptOwnership
     */
    function nomineeOwner() external view returns (address);

    /**
     * @notice accept transfer of contract ownership
     */
    function acceptOwnership() external;
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

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

interface ISafeOwnableInternal is IOwnableInternal {
    error SafeOwnable__NotNomineeOwner();
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { ISafeOwnable } from '../../access/ownable/ISafeOwnable.sol';
import { IERC165 } from '../../interfaces/IERC165.sol';
import { IDiamondBase } from './base/IDiamondBase.sol';
import { IDiamondFallback } from './fallback/IDiamondFallback.sol';
import { IDiamondReadable } from './readable/IDiamondReadable.sol';
import { IDiamondWritable } from './writable/IDiamondWritable.sol';

interface ISolidStateDiamond is
    IDiamondBase,
    IDiamondFallback,
    IDiamondReadable,
    IDiamondWritable,
    ISafeOwnable,
    IERC165
{
    receive() external payable;
}

// SPDX-License-Identifier: MIT

/*                                                                                                                                                                                                                                                                            
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                                    ................                                                                                                                                                                       
*/

pragma solidity 0.8.18;

import { SolidStateDiamondRevokableUpgradability } from "./SolidStateDiamondRevokableUpgradability.sol";
import { AccessControlInternal } from "@solidstate/contracts/access/access_control/AccessControlInternal.sol";
import { IERC721 } from "@solidstate/contracts/interfaces/IERC721.sol";
import { IERC165 } from "@solidstate/contracts/interfaces/IERC165.sol";
import { IERC2981 } from "@solidstate/contracts/interfaces/IERC2981.sol";
import { IERC721Enumerable } from "@solidstate/contracts/token/ERC721/enumerable/IERC721Enumerable.sol";
import { ERC2981Storage } from "@solidstate/contracts/token/common/ERC2981/ERC2981Storage.sol";
import { KeepersERC721Storage } from "./facets/KeepersERC721/KeepersERC721Storage.sol";
import { ERC721MetadataStorage } from "@solidstate/contracts/token/ERC721/metadata/ERC721MetadataStorage.sol";
import { TermsStorage } from "./facets/Terms/TermsStorage.sol";
import { ConstantsLib } from "./library/ConstantsLib.sol";
import { DiamondWritableInternal } from "@solidstate/contracts/proxy/diamond/writable/DiamondWritableInternal.sol";
import { CANONICAL_CORI_SUBSCRIPTION } from "operator-filter-registry/src/lib/Constants.sol";
import { DiamondOperatorFilter } from "./DiamondOperatorFilter.sol";
import "@openzeppelin/contracts/utils/Counters.sol";

/**
 * @title KeepersDiamond "Diamond" proxy implementation based on SolidState Diamond Reference
 */
contract KeepersDiamond is SolidStateDiamondRevokableUpgradability, AccessControlInternal, DiamondOperatorFilter {
    using Counters for Counters.Counter;

    constructor(string memory name_, string memory symbol_, string memory baseURI_) {
        // ERC165 - note: other interfaces are set in SolidStateDiamondRevokableUpgradability
        _setSupportsInterface(type(IERC721).interfaceId, true);
        _setSupportsInterface(type(IERC721Enumerable).interfaceId, true);
        _setSupportsInterface(type(IERC2981).interfaceId, true);

        // AccessControl
        _grantRole(ConstantsLib.KEEPERS_TERMS_OPERATOR, msg.sender);
        _grantRole(ConstantsLib.KEEPERS_LICENSE_OPERATOR, msg.sender);

        // ERC2981
        ERC2981Storage.layout().defaultRoyaltyBPS = 700; // 7%
        ERC2981Storage.layout().defaultRoyaltyReceiver = msg.sender;

        // mint parameters
        KeepersERC721Storage.layout().maxPerAddress = 10;
        KeepersERC721Storage.layout().numAvailableTokens = uint16(ConstantsLib.MAX_TICKETS);

        // Metadata
        ERC721MetadataStorage.layout().name = name_;
        ERC721MetadataStorage.layout().symbol = symbol_;
        ERC721MetadataStorage.layout().baseURI = baseURI_;

        // Terms version
        TermsStorage.layout().termsVersion.increment(); // Set terms to V1 by default

        // Set up Operator Filter Registry
        __OperatorFilterer_init(CANONICAL_CORI_SUBSCRIPTION);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.18;

library KeepersERC721Storage {
    bytes32 internal constant STORAGE_SLOT = keccak256("keepers.contracts.storage.keepers.erc721.storage");

    // @dev struct which describes a commit
    // @dev use uint128 for tight variable packing
    struct MintCommit {
        uint128 numNFTs;
        uint128 commitBlock;
    }

    struct Layout {
        // @dev keeps track of available tokens for fisher yates shuffle
        mapping(uint256 => uint256) availableTokens;
        // @dev a mapping of user address to their pending commit
        mapping(address => MintCommit) pendingCommits;
        // Mint parameters
        mapping(address => uint256) mintCountPerAddress;
        // the following variables will be tightly packed
        uint16 numAvailableTokens;
        uint16 maxPerAddress;
        uint32 saleStartTimestamp; // max val in 2106
        uint32 saleCompleteTimestamp;
        uint160 numPendingCommitNFTs;
        address withdrawAddress;
        address vaultAddress;
        uint256 maxMintsForSalesTier; // when kept at 0 it is ignored
    }

    function layout() internal pure returns (Layout storage l) {
        bytes32 slot = STORAGE_SLOT;
        assembly {
            l.slot := slot
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { IERC173 } from '../../interfaces/IERC173.sol';
import { IOwnable } from './IOwnable.sol';
import { OwnableInternal } from './OwnableInternal.sol';

/**
 * @title Ownership access control based on ERC173
 */
abstract contract Ownable is IOwnable, OwnableInternal {
    /**
     * @inheritdoc IERC173
     */
    function owner() public view virtual returns (address) {
        return _owner();
    }

    /**
     * @inheritdoc IERC173
     */
    function transferOwnership(address account) public virtual onlyOwner {
        _transferOwnership(account);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { IERC173 } from '../../interfaces/IERC173.sol';
import { AddressUtils } from '../../utils/AddressUtils.sol';
import { IOwnableInternal } from './IOwnableInternal.sol';
import { OwnableStorage } from './OwnableStorage.sol';

abstract contract OwnableInternal is IOwnableInternal {
    using AddressUtils for address;

    modifier onlyOwner() {
        if (msg.sender != _owner()) revert Ownable__NotOwner();
        _;
    }

    modifier onlyTransitiveOwner() {
        if (msg.sender != _transitiveOwner())
            revert Ownable__NotTransitiveOwner();
        _;
    }

    function _owner() internal view virtual returns (address) {
        return OwnableStorage.layout().owner;
    }

    function _transitiveOwner() internal view virtual returns (address owner) {
        owner = _owner();

        while (owner.isContract()) {
            try IERC173(owner).owner() returns (address transitiveOwner) {
                owner = transitiveOwner;
            } catch {
                break;
            }
        }
    }

    function _transferOwnership(address account) internal virtual {
        _setOwner(account);
    }

    function _setOwner(address account) internal virtual {
        OwnableStorage.Layout storage l = OwnableStorage.layout();
        emit OwnershipTransferred(l.owner, account);
        l.owner = account;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

library OwnableStorage {
    struct Layout {
        address owner;
    }

    bytes32 internal constant STORAGE_SLOT =
        keccak256('solidstate.contracts.storage.Ownable');

    function layout() internal pure returns (Layout storage l) {
        bytes32 slot = STORAGE_SLOT;
        assembly {
            l.slot := slot
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { AddressUtils } from '../utils/AddressUtils.sol';
import { IProxy } from './IProxy.sol';

/**
 * @title Base proxy contract
 */
abstract contract Proxy is IProxy {
    using AddressUtils for address;

    /**
     * @notice delegate all calls to implementation contract
     * @dev reverts if implementation address contains no code, for compatibility with metamorphic contracts
     * @dev memory location in use by assembly may be unsafe in other contexts
     */
    fallback() external payable virtual {
        address implementation = _getImplementation();

        if (!implementation.isContract())
            revert Proxy__ImplementationIsNotContract();

        assembly {
            calldatacopy(0, 0, calldatasize())
            let result := delegatecall(
                gas(),
                implementation,
                0,
                calldatasize(),
                0,
                0
            )
            returndatacopy(0, 0, returndatasize())

            switch result
            case 0 {
                revert(0, returndatasize())
            }
            default {
                return(0, returndatasize())
            }
        }
    }

    /**
     * @notice get logic implementation address
     * @return implementation address
     */
    function _getImplementation() internal virtual returns (address);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { Ownable } from './Ownable.sol';
import { ISafeOwnable } from './ISafeOwnable.sol';
import { OwnableInternal } from './OwnableInternal.sol';
import { SafeOwnableInternal } from './SafeOwnableInternal.sol';

/**
 * @title Ownership access control based on ERC173 with ownership transfer safety check
 */
abstract contract SafeOwnable is ISafeOwnable, Ownable, SafeOwnableInternal {
    /**
     * @inheritdoc ISafeOwnable
     */
    function nomineeOwner() public view virtual returns (address) {
        return _nomineeOwner();
    }

    /**
     * @inheritdoc ISafeOwnable
     */
    function acceptOwnership() public virtual onlyNomineeOwner {
        _acceptOwnership();
    }

    function _transferOwnership(
        address account
    ) internal virtual override(OwnableInternal, SafeOwnableInternal) {
        super._transferOwnership(account);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

import { ISafeOwnableInternal } from './ISafeOwnableInternal.sol';
import { OwnableInternal } from './OwnableInternal.sol';
import { SafeOwnableStorage } from './SafeOwnableStorage.sol';

abstract contract SafeOwnableInternal is ISafeOwnableInternal, OwnableInternal {
    modifier onlyNomineeOwner() {
        if (msg.sender != _nomineeOwner())
            revert SafeOwnable__NotNomineeOwner();
        _;
    }

    /**
     * @notice get the nominated owner who has permission to call acceptOwnership
     */
    function _nomineeOwner() internal view virtual returns (address) {
        return SafeOwnableStorage.layout().nomineeOwner;
    }

    /**
     * @notice accept transfer of contract ownership
     */
    function _acceptOwnership() internal virtual {
        _setOwner(msg.sender);
        delete SafeOwnableStorage.layout().nomineeOwner;
    }

    /**
     * @notice grant permission to given address to claim contract ownership
     */
    function _transferOwnership(address account) internal virtual override {
        _setNomineeOwner(account);
    }

    /**
     * @notice set nominee owner
     */
    function _setNomineeOwner(address account) internal virtual {
        SafeOwnableStorage.layout().nomineeOwner = account;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

library SafeOwnableStorage {
    struct Layout {
        address nomineeOwner;
    }

    bytes32 internal constant STORAGE_SLOT =
        keccak256('solidstate.contracts.storage.SafeOwnable');

    function layout() internal pure returns (Layout storage l) {
        bytes32 slot = STORAGE_SLOT;
        assembly {
            l.slot := slot
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.18;

import { IOwnable, Ownable, OwnableInternal } from "@solidstate/contracts/access/ownable/Ownable.sol";
import { ISafeOwnable, SafeOwnable } from "@solidstate/contracts/access/ownable/SafeOwnable.sol";
import { IERC165 } from "@solidstate/contracts/interfaces/IERC165.sol";
import { IERC173 } from "@solidstate/contracts/interfaces/IERC173.sol";
import { ERC165Base, ERC165BaseStorage } from "@solidstate/contracts/introspection/ERC165/base/ERC165Base.sol";
import { DiamondBase } from "@solidstate/contracts/proxy/diamond/base/DiamondBase.sol";
import { DiamondFallback, IDiamondFallback } from "@solidstate/contracts/proxy/diamond/fallback/DiamondFallback.sol";
import { DiamondReadable, IDiamondReadable } from "@solidstate/contracts/proxy/diamond/readable/DiamondReadable.sol";
import { IDiamondWritable } from "@solidstate/contracts/proxy/diamond/writable/DiamondWritable.sol";
import { DiamondWritableRevokable } from "./facets/DiamondWritableRevokable/DiamondWritableRevokable.sol";
import { ISolidStateDiamond } from "@solidstate/contracts/proxy/diamond/ISolidStateDiamond.sol";

/**
 * @title SolidState "Diamond" proxy reference implementation with DiamondWritableRevokable
 */
abstract contract SolidStateDiamondRevokableUpgradability is
    ISolidStateDiamond,
    DiamondBase,
    DiamondFallback,
    DiamondReadable,
    DiamondWritableRevokable,
    SafeOwnable,
    ERC165Base
{
    constructor() {
        bytes4[] memory selectors = new bytes4[](12);
        uint256 selectorIndex;

        // register DiamondFallback

        selectors[selectorIndex++] = IDiamondFallback.getFallbackAddress.selector;
        selectors[selectorIndex++] = IDiamondFallback.setFallbackAddress.selector;

        _setSupportsInterface(type(IDiamondFallback).interfaceId, true);

        // register DiamondWritable

        selectors[selectorIndex++] = IDiamondWritable.diamondCut.selector;

        _setSupportsInterface(type(IDiamondWritable).interfaceId, true);

        // register DiamondReadable

        selectors[selectorIndex++] = IDiamondReadable.facets.selector;
        selectors[selectorIndex++] = IDiamondReadable.facetFunctionSelectors.selector;
        selectors[selectorIndex++] = IDiamondReadable.facetAddresses.selector;
        selectors[selectorIndex++] = IDiamondReadable.facetAddress.selector;

        _setSupportsInterface(type(IDiamondReadable).interfaceId, true);

        // register ERC165

        selectors[selectorIndex++] = IERC165.supportsInterface.selector;

        _setSupportsInterface(type(IERC165).interfaceId, true);

        // register SafeOwnable
        selectors[selectorIndex++] = Ownable.owner.selector;
        selectors[selectorIndex++] = SafeOwnable.nomineeOwner.selector;
        selectors[selectorIndex++] = Ownable.transferOwnership.selector;
        selectors[selectorIndex++] = SafeOwnable.acceptOwnership.selector;

        _setSupportsInterface(type(IERC173).interfaceId, true);

        // diamond cut

        FacetCut[] memory facetCuts = new FacetCut[](1);

        facetCuts[0] = FacetCut({ target: address(this), action: FacetCutAction.ADD, selectors: selectors });

        _diamondCut(facetCuts, address(0), "");

        // set owner

        _setOwner(msg.sender);
    }

    receive() external payable {}

    function _transferOwnership(address account) internal virtual override(OwnableInternal, SafeOwnable) {
        super._transferOwnership(account);
    }

    /**
     * @inheritdoc DiamondFallback
     */
    function _getImplementation()
        internal
        view
        override(DiamondBase, DiamondFallback)
        returns (address implementation)
    {
        implementation = super._getImplementation();
    }
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.18;

import "@openzeppelin/contracts/utils/Counters.sol";

library TermsStorage {
    using Counters for Counters.Counter;

    bytes32 internal constant STORAGE_SLOT = keccak256("keepers.contracts.storage.terms");

    struct Layout {
        mapping(uint256 => string) termsParts; // mapping of term part number to term part string
        Counters.Counter termsVersion;
    }

    function layout() internal pure returns (Layout storage l) {
        bytes32 slot = STORAGE_SLOT;
        assembly {
            l.slot := slot
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.8;

/**
 * @title utility functions for uint256 operations
 * @dev derived from https://github.com/OpenZeppelin/openzeppelin-contracts/ (MIT license)
 */
library UintUtils {
    error UintUtils__InsufficientHexLength();

    bytes16 private constant HEX_SYMBOLS = '0123456789abcdef';

    function add(uint256 a, int256 b) internal pure returns (uint256) {
        return b < 0 ? sub(a, -b) : a + uint256(b);
    }

    function sub(uint256 a, int256 b) internal pure returns (uint256) {
        return b < 0 ? add(a, -b) : a - uint256(b);
    }

    function toString(uint256 value) internal pure returns (string memory) {
        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);
    }

    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return '0x00';
        }

        uint256 length = 0;

        for (uint256 temp = value; temp != 0; temp >>= 8) {
            unchecked {
                length++;
            }
        }

        return toHexString(value, 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';

        unchecked {
            for (uint256 i = 2 * length + 1; i > 1; --i) {
                buffer[i] = HEX_SYMBOLS[value & 0xf];
                value >>= 4;
            }
        }

        if (value != 0) revert UintUtils__InsufficientHexLength();

        return string(buffer);
    }
}

{
  "compilationTarget": {
    "contracts/KeepersDiamond.sol": "KeepersDiamond"
  },
  "evmVersion": "paris",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "none"
  },
  "optimizer": {
    "enabled": true,
    "runs": 800
  },
  "remappings": []
}