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// SPDX-License-Identifier: BUSL-1.1
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity 0.8.17;

import "utils.sol/Fixable.sol";
import "utils.sol/NFT.sol";
import "utils.sol/Implementation.sol";
import "utils.sol/types/bool.sol";
import "openzeppelin-contracts/utils/Base64.sol";

import "./lib/LibStringify.sol";
import "./ctypes/ticket_array.sol";
import "./ctypes/cask_array.sol";
import "./interfaces/IvExitQueue.sol";
import "./interfaces/IvPool.sol";
import "./interfaces/IvFactory.sol";

/// @title Exit Queue
/// @author mortimr @ Kiln
/// @notice The exit queue stores exit requests until they are filled and claimable
///
///           ⢀⣀ ⢀⣤⣤⣤⠄⣠⣤⣤⠄⢀⣀⡀
///         ⢀⣾⣿⠏⢰⣿⣿⣿⠃⣰⣿⣿⠁⣴⣿⣿⣿⣷⡀
///         ⣾⣿⡟⢀⣿⣿⣿⡏⢠⣿⣿⡇⢰⣿⣿⣿⣿⣿⣷
///        ⢸⣿⣿⡇⢸⣿⣿⣿⡇⢸⣿⣿ ⢸⣿⣿⣿⣿⣿⣿
///        ⠈⣿⣿⡇⠸⣿⣿⣿⡇⢸⣿⣿⡆⢸⣿⣿⠟⢿⣿⣿
///         ⠘⠛⠛ ⠛⠛⠛⠃⠈⠻⠿⠧⠈⣿⡇ ⢸⣿⠃
///      ⢀⣤⠄⢀⣶⣿⣿⡟⢠⣾⣿⠇⢀⣤⣤⣄⠛⠛⠛⢁ ⣤⣤⣄         ⢀⣤⠄⢀⣶⣿⣿⡟⢠⣾⣿⠇⢀⣤⣤⣄     ⣤⣤⣄
///     ⣴⣿⡏⢠⣿⣿⣿⡟⢠⣿⣿⠃⣰⣿⣿⣿⣿⣧  ⢠⣿⣿⣿⣿⣧      ⣴⣿⡏⢠⣿⣿⣿⡟⢠⣿⣿⠃⣰⣿⣿⣿⣿⣧  ⢠⣿⣿⣿⣿⣧
///    ⢰⣿⣿ ⣾⣿⣿⣿⠁⣼⣿⡏⢠⣿⣿⣿⣿⣿⣿⡄ ⣿⣿⣿⣿⣿⣿⡇    ⢰⣿⣿ ⣾⣿⣿⣿⠁⣼⣿⡏⢠⣿⣿⣿⣿⣿⣿⡄ ⣿⣿⣿⣿⣿⣿⡇
///    ⢸⣿⣿ ⣿⣿⣿⣿ ⣿⣿⡇⢸⣿⣿⣿⣿⣿⣿⡇ ⣿⣿⣿⣿⣿⣿⡇    ⢸⣿⣿ ⣿⣿⣿⣿ ⣿⣿⡇⢸⣿⣿⣿⣿⣿⣿⡇ ⣿⣿⣿⣿⣿⣿⡇
///    ⠘⣿⣿ ⣿⣿⣿⣿⡀⢻⣿⣧⠈⣿⣿⠟⠙⣿⣿⠁ ⢿⣿⡟⠙⢿⣿⠇    ⠘⣿⣿ ⣿⣿⣿⣿⡀⢻⣿⣧⠈⣿⣿⠟⠙⣿⣿⠁ ⢿⣿⡟⠙⢿⣿⠇
///     ⠙⢿⣇⠘⢿⣿⣿⣧⠈⣿⣿⣆⠘⣿⣄⣠⣾⠃⣰⣧⠘⢿⣇⢀⣾⠏      ⠙⢿⣇⠘⢿⣿⣿⣧⠈⣿⣿⣆⠘⣿⣄⣠⣾⠃⣰⣧⠘⢿⣇⢀⣾⠏
///       ⠈⠁⠈⠛⠛⠛⠃⠈⠛⠛⠓ ⠉⠉ ⠐⠛⠛⠓ ⠉⠉⠁          ⠈⠁⠈⠛⠛⠛⠃⠈⠛⠛⠓ ⠉⠉ ⠐⠛⠛⠓ ⠉⠉⠁
///
// slither-disable-next-line naming-convention
contract vExitQueue is NFT, Fixable, Initializable, Implementation, IvExitQueue {
    using LUint256 for types.Uint256;
    using LAddress for types.Address;
    using LBool for types.Bool;
    using LString for types.String;
    using LTicketArray for ctypes.TicketArray;
    using LCaskArray for ctypes.CaskArray;

    /// @dev Address of the associated vPool
    /// @dev Slot: keccak256(bytes("exitQueue.1.pool"))) - 1
    types.Address internal constant $pool = types.Address.wrap(0xdcdd87edea8fcbdc6d50bb4863c8269eed833245e48ec3e4f64dc4cd88a27283);

    /// @dev Total amount of unclaimed funds in the exit queue - 1
    /// @dev Slot: keccak256(bytes("exitQueue.1.unclaimedFunds")))
    types.Uint256 internal constant $unclaimedFunds = types.Uint256.wrap(0x51fae72b3be6f7b8c2f4de519c1a9fb3f8624c4c7d1f85109b6659ae4958c29a);

    /// @dev Flag enabling/disabling transfers
    /// @dev Slot: keccak256(bytes("exitQueue.1.transferEnabled"))) - 1
    types.Bool internal constant $transferEnabled = types.Bool.wrap(0xc1bfc3030aebadb3bfaa3fbc59cf364f7dee6ab92429159a4bfdf02fa88336a0);

    /// @dev Token URI image URL
    /// @dev Slot: keccak256(bytes("exitQueue.1.tokenUriImageUrl"))) - 1
    types.String internal constant $tokenUriImageUrl = types.String.wrap(0x0f0463b3f5083af4c7135d28606a2c0eaa2bd9e3f9f62db1539e47244df8dc49);

    /// @dev Array of tickets
    /// @dev Slot: keccak256(bytes("exitQueue.1.tickets"))) - 1
    ctypes.TicketArray internal constant $tickets =
        ctypes.TicketArray.wrap(0x409fdfd8838fda00128ca5d502af2ba15c034ca4130776e2ed6d3eb7811e3481);

    /// @dev Array of casks
    /// @dev Slot: keccak256(bytes("exitQueue.1.casks"))) - 1
    ctypes.CaskArray internal constant $casks = ctypes.CaskArray.wrap(0x39a5c864ceb6f99a196a385a148476994e3952fd6d71d040a2339a143eaeabe1);

    /// @dev Resolution error code for a ticket that is out of bounds
    int64 internal constant TICKET_ID_OUT_OF_BOUNDS = -1;
    /// @dev Resolution error code for a ticket that has already been claimed
    int64 internal constant TICKET_ALREADY_CLAIMED = -2;
    /// @dev Resolution error code for a ticket that is pending fulfillment
    int64 internal constant TICKET_PENDING = -3;

    /// @notice Prevents calls not coming from the associated vPool
    modifier onlyPool() {
        if (msg.sender != $pool.get()) {
            revert LibErrors.Unauthorized(msg.sender, $pool.get());
        }
        _;
    }

    /// @notice Prevents calls not coming from the vFactory admin
    modifier onlyAdmin() {
        {
            address admin = IvFactory(_castedPool().factory()).admin();
            if (msg.sender != admin) {
                revert LibErrors.Unauthorized(msg.sender, admin);
            }
        }
        _;
    }

    /// @inheritdoc IvExitQueue
    // slither-disable-next-line missing-zero-check
    function initialize(address vpool, string calldata newTokenUriImageUrl) external init(0) {
        _setTokenUriImageUrl(newTokenUriImageUrl);
        LibSanitize.notZeroAddress(vpool);
        $pool.set(vpool);
        emit SetPool(vpool);
    }

    /// @inheritdoc IvExitQueue
    function tokenUriImageUrl() external view returns (string memory) {
        return $tokenUriImageUrl.get();
    }

    /// @notice Get the Exit Queue name from the associated vPool -> Factory.
    /// @dev The name is mutable (can be updated by the Factory admin).
    /// @return The name of the Exit Queue.
    function name() external view override returns (string memory) {
        // slither-disable-next-line unused-return
        (string memory operatorName,,) = IvFactory(_castedPool().factory()).metadata();
        return string(abi.encodePacked(operatorName, " Exit Queue"));
    }

    /// @inheritdoc NFT
    function symbol() external pure override returns (string memory) {
        return "vEQ";
    }

    /// @inheritdoc IERC721Metadata
    function tokenURI(uint256 tokenId) external view override(NFT) returns (string memory) {
        _requireExists(tokenId);
        uint256 tokenIdx = _getTicketIdx(tokenId);
        ctypes.Ticket memory t = $tickets.get()[tokenIdx];
        ctypes.Cask[] storage caskArray = $casks.get();
        uint256 claimable = 0;
        uint256 queueSize = 0;
        {
            ctypes.Cask memory c = caskArray.length > 0 ? caskArray[caskArray.length - 1] : ctypes.Cask({position: 0, size: 0, value: 0});

            //           | CASK |
            // | TICKET |
            if (c.position > t.position + t.size) {
                claimable = t.size;
                //       | CASK |
                // | TICKET |
            } else if (c.position >= t.position) {
                claimable = t.size - (c.position + c.size >= t.position + t.size ? 0 : (t.position + t.size) - (c.position + c.size));
                // | CASK |
                //      | TICKET |
            } else if (c.position < t.position && t.position < c.position + c.size) {
                claimable = (c.position + c.size) - t.position;
            }
            queueSize = c.position + c.size;
        }
        bytes memory fullImageUrl =
            abi.encodePacked($tokenUriImageUrl.get(), "/", Strings.toHexString(address(this)), "/", Strings.toString(tokenId));
        return string(
            abi.encodePacked(
                "data:application/json;base64,",
                Base64.encode(
                    abi.encodePacked(
                        "{",
                        "\"name\":\"Exit Ticket #",
                        Strings.toString(tokenIdx),
                        "\",",
                        "\"description\":\"This exit ticket can be used to claim funds from the exit queue contract once it is fulfilled.\",",
                        _generateAttributes(t, claimable, queueSize),
                        "\"image_url\":\"",
                        fullImageUrl,
                        "\"}"
                    )
                )
            )
        );
    }

    /// @inheritdoc IvExitQueue
    function transferEnabled() external view returns (bool) {
        return $transferEnabled.get();
    }

    /// @inheritdoc IvExitQueue
    function unclaimedFunds() external view returns (uint256) {
        return $unclaimedFunds.get();
    }

    /// @inheritdoc IvExitQueue
    function ticketIdAtIndex(uint32 idx) external view returns (uint256) {
        return _getTicketId(idx, $tickets.get()[idx]);
    }

    /// @inheritdoc IvExitQueue
    function ticket(uint256 id) external view returns (ctypes.Ticket memory) {
        uint256 idx = _getTicketIdx(id);
        ctypes.Ticket[] storage ticketArray = $tickets.get();
        if (idx >= ticketArray.length) {
            revert InvalidTicketId(id);
        }
        return ticketArray[idx];
    }

    /// @inheritdoc IvExitQueue
    function ticketCount() external view returns (uint256) {
        return $tickets.get().length;
    }

    /// @inheritdoc IvExitQueue
    function cask(uint32 id) external view returns (ctypes.Cask memory) {
        ctypes.Cask[] storage caskArray = $casks.get();
        if (id >= caskArray.length) {
            revert InvalidCaskId(id);
        }
        return caskArray[id];
    }

    /// @inheritdoc IvExitQueue
    function caskCount() external view returns (uint256) {
        return $casks.get().length;
    }

    /// @inheritdoc IvExitQueue
    function resolve(uint256[] memory ticketIds) external view returns (int64[] memory caskIdsOrErrors) {
        uint256 ticketIdsLength = ticketIds.length;
        caskIdsOrErrors = new int64[](ticketIdsLength);
        uint256 totalTicketCount = $tickets.get().length;
        uint256 totalCaskCount = $casks.get().length;
        for (uint256 idx = 0; idx < ticketIdsLength;) {
            caskIdsOrErrors[idx] = _resolve(ticketIds[idx], totalTicketCount, totalCaskCount);
            unchecked {
                ++idx;
            }
        }
    }

    /// @inheritdoc IvExitQueue
    function feed(uint256 shares) external payable onlyPool {
        LibSanitize.notNullValue(shares);
        LibSanitize.notNullValue(msg.value);
        ctypes.Cask[] storage caskArray = $casks.get();
        uint256 casksLength = caskArray.length;
        ctypes.Cask memory lastCask = casksLength > 0 ? caskArray[casksLength - 1] : ctypes.Cask({position: 0, size: 0, value: 0});
        ctypes.Cask memory newCask =
            ctypes.Cask({position: lastCask.position + lastCask.size, size: uint128(shares), value: uint128(msg.value)});
        caskArray.push(newCask);
        emit ReceivedCask(uint32(casksLength), newCask);
    }

    /// @inheritdoc IvExitQueue
    function pull(uint256 max) external onlyPool {
        uint256 currentUnclaimedFunds = $unclaimedFunds.get();
        uint256 maxPullable = LibUint256.min(max, currentUnclaimedFunds);
        if (maxPullable > 0) {
            _setUnclaimedFunds(currentUnclaimedFunds - maxPullable);
            emit SuppliedEther(maxPullable);
            _castedPool().injectEther{value: maxPullable}();
        }
    }

    /// @inheritdoc IvPoolSharesReceiver
    //slither-disable-next-line assembly
    function onvPoolSharesReceived(address, address from, uint256 amount, bytes memory data) external override onlyPool returns (bytes4) {
        LibSanitize.notNullValue(amount);
        if (data.length == 20) {
            // If the data appears to be a packed encoded address we print a ticket to that address instead of the sender
            address to;
            assembly {
                // After skipping the length element of data, the first element (20 bytes padded on the right to 32 bytes) is
                // converted to an actual address by right shifting.
                to := shr(96, mload(add(data, 32)))
            }
            _printTicket(uint128(amount), to);
        } else {
            _printTicket(uint128(amount), from);
        }
        return IvPoolSharesReceiver.onvPoolSharesReceived.selector;
    }

    /// @inheritdoc IvExitQueue
    function setTokenUriImageUrl(string calldata newTokenUriImageUrl) external onlyAdmin {
        _setTokenUriImageUrl(newTokenUriImageUrl);
    }

    /// @inheritdoc IvExitQueue
    function setTransferEnabled(bool value) external onlyAdmin {
        _setTransferEnabled(value);
    }

    struct ClaimInternalVariables {
        uint256 ticketIdsLength;
        uint256 totalTicketCount;
        address[] recipients;
        uint256[] payments;
        uint256 usedRecipients;
        ConsumeTicketParameters params;
    }

    /// @inheritdoc IvExitQueue
    // slither-disable-next-line arbitrary-send-eth,calls-loop,reentrancy-events,cyclomatic-complexity
    function claim(uint256[] calldata ticketIds, uint32[] calldata caskIds, uint16 maxClaimDepth)
        external
        returns (ClaimStatus[] memory statuses)
    {
        // slither-disable-next-line uninitialized-local
        ClaimInternalVariables memory __;
        __.ticketIdsLength = ticketIds.length;
        if (__.ticketIdsLength == 0 || __.ticketIdsLength != caskIds.length) {
            revert InvalidLengths();
        }
        __.totalTicketCount = $tickets.get().length;
        __.params.totalCaskCount = $casks.get().length;

        statuses = new ClaimStatus[](ticketIds.length);

        __.recipients = new address[](ticketIds.length);
        __.payments = new uint256[](ticketIds.length);
        __.usedRecipients = 0;

        // slither-disable-next-line uninitialized-local
        for (uint256 idx; idx < __.ticketIdsLength;) {
            __.params.ticketId = ticketIds[idx];
            __.params.ticketIdx = _getTicketIdx(__.params.ticketId);
            __.params.caskId = caskIds[idx];
            __.params.depth = maxClaimDepth;
            __.params.ethToPay = 0;

            // this line reverts if the ticket id doesn't exist
            address owner = ownerOf(ticketIds[idx]);

            __.params.t = $tickets.get()[__.params.ticketIdx];

            if (__.params.t.size == 0) {
                statuses[idx] = ClaimStatus.SKIPPED;
                unchecked {
                    ++idx;
                }
                continue;
            }

            if (__.params.caskId >= __.params.totalCaskCount) {
                revert InvalidCaskId(__.params.caskId);
            }

            __.params.c = $casks.get()[__.params.caskId];

            if (!_matching(__.params.t, __.params.c)) {
                revert TicketNotMatchingCask(__.params.ticketId, __.params.caskId);
            }

            _consumeTicket(__.params);

            if (__.params.t.size > 0) {
                uint256 ticketIdx = _getTicketIdx(ticketIds[idx]);
                _burn(ticketIds[idx]);
                uint256 newTicketId = _getTicketId(ticketIdx, $tickets.get()[ticketIdx]);
                _mint(owner, newTicketId);
                emit TicketIdUpdated(ticketIds[idx], newTicketId, uint32(ticketIdx));
            }
            statuses[idx] = __.params.t.size > 0 ? ClaimStatus.PARTIALLY_CLAIMED : ClaimStatus.CLAIMED;
            if (__.params.ethToPay > 0) {
                int256 ownerIndex = -1;
                for (uint256 recipientIdx = 0; recipientIdx < __.usedRecipients;) {
                    if (__.recipients[recipientIdx] == owner) {
                        ownerIndex = int256(recipientIdx);
                        break;
                    }
                    unchecked {
                        ++recipientIdx;
                    }
                }

                if (ownerIndex == -1) {
                    __.recipients[__.usedRecipients] = owner;
                    __.payments[__.usedRecipients] = __.params.ethToPay;
                    unchecked {
                        ++__.usedRecipients;
                    }
                } else {
                    __.payments[uint256(ownerIndex)] += __.params.ethToPay;
                }
            }

            unchecked {
                ++idx;
            }
        }

        for (uint256 recipientIdx = 0; recipientIdx < __.usedRecipients;) {
            address recipient = __.recipients[recipientIdx];
            uint256 payment = __.payments[recipientIdx];
            // slither-disable-next-line missing-zero-check,low-level-calls
            (bool success, bytes memory reason) = recipient.call{value: payment}("");
            if (!success) {
                revert ClaimTransferFailed(recipient, reason);
            }
            emit Payment(recipient, payment);
            unchecked {
                ++recipientIdx;
            }
        }
    }

    /// @dev Internal utility function to retrieve the string status of a ticket
    /// @param t The ticket to get the status of
    /// @param claimable The amount of the ticket that is claimable
    /// @return The status of the ticket
    function _getStatusString(ctypes.Ticket memory t, uint256 claimable) internal pure returns (string memory) {
        if (claimable == 0) {
            return "Not yet claimable";
        } else if (claimable < t.size) {
            return "Partially claimable";
        }
        return "Fully claimable";
    }

    /// @dev Internal utility function to generate the attributes of a ticket
    /// @param t The ticket to get the attributes of
    /// @param claimable The amount of the ticket that is claimable
    /// @return The attributes of the ticket
    function _generateAttributes(ctypes.Ticket memory t, uint256 claimable, uint256 queueSize) internal pure returns (bytes memory) {
        return abi.encodePacked(
            "\"attributes\":[{\"trait_type\":\"Queue position\",\"value\":",
            LibStringify.uintToDecimalString(t.position, 18, 3),
            ",\"display_type\":\"number\",\"max_value\":",
            LibStringify.uintToDecimalString(queueSize, 18, 3),
            "},{\"trait_type\":\"Claimable amount\",\"value\":",
            LibStringify.uintToDecimalString(claimable, 18, 3),
            ",\"display_type\":\"number\",\"max_value\":",
            LibStringify.uintToDecimalString(t.size, 18, 3),
            "},{\"trait_type\":\"Status\",\"value\":\"",
            _getStatusString(t, claimable),
            "\"}],"
        );
    }

    /// @dev Internal hook happening at each transfer.
    ///      To override.
    function _onTransfer(address, address, uint256) internal view override {
        if (!$transferEnabled.get()) {
            revert TransferDisabled();
        }
    }

    /// @dev Internal hook happening at each mint.
    ///      To override.
    /// @param to The address receiving the token
    /// @param tokenId The token id
    function _onMint(address to, uint256 tokenId) internal override {}

    /// @dev Internal hook happening at each burn.
    ///      To override.
    /// @param tokenId The token id
    function _onBurn(uint256 tokenId) internal override {}

    /// @dev Internal utility to retrieve the vPool address casted to the vPool interface
    /// @return The vPool address casted to the vPool interface
    function _castedPool() internal view returns (IvPool) {
        return IvPool($pool.get());
    }

    /// @dev Internal utility to check if a ticket is claimable on a cask
    /// @param t The ticket to check
    /// @param p The cask to check
    /// @return True if the ticket is claimable on the cask
    function _matching(ctypes.Ticket memory t, ctypes.Cask memory p) internal pure returns (bool) {
        return (t.position < p.position + p.size && t.position >= p.position);
    }

    /// @dev Internal utility to perform a dichotomy search to find the cask matching a ticket
    /// @param ticketIdx The index of the ticket to find the cask for
    /// @return caskId The cask id matching the ticket
    function _searchCaskForTicket(uint256 ticketIdx) internal view returns (uint32 caskId) {
        ctypes.Cask[] storage caskArray = $casks.get();
        uint32 right = uint32(caskArray.length - 1);

        ctypes.Ticket memory t = $tickets.get()[ticketIdx];

        if (_matching(t, caskArray[right])) {
            return right;
        }

        uint32 left = 0;

        if (_matching(t, caskArray[left])) {
            return left;
        }

        while (left != right) {
            uint32 middle = (left + right) >> 1;

            ctypes.Cask memory middleC = caskArray[middle];
            if (_matching(t, middleC)) {
                return middle;
            }

            if (t.position < middleC.position) {
                right = middle;
            } else {
                left = middle;
            }
        }
        return left;
    }

    /// @dev Internal utility to resolve a ticket
    /// @param ticketId The ticket to resolve
    /// @param totalTicketCount The total number of tickets
    /// @param totalCaskCount The total number of casks
    /// @return caskIdOrError The cask id matching the ticket or an error code
    function _resolve(uint256 ticketId, uint256 totalTicketCount, uint256 totalCaskCount) internal view returns (int64 caskIdOrError) {
        uint256 ticketIdx = _getTicketIdx(ticketId);
        if (ticketIdx >= totalTicketCount) {
            return TICKET_ID_OUT_OF_BOUNDS;
        }
        ctypes.Ticket memory t = $tickets.get()[ticketIdx];
        if (t.size == 0) {
            return TICKET_ALREADY_CLAIMED;
        }
        if (totalCaskCount == 0 || $casks.get()[totalCaskCount - 1].position + $casks.get()[totalCaskCount - 1].size <= t.position) {
            return TICKET_PENDING;
        }
        return int64(uint64(_searchCaskForTicket(ticketIdx)));
    }

    /// @dev Retrieves the ticket id from its index and size.
    ///      The ticket id is dynamic, every time someone performs a partial claim of the ticket, its id changes.
    ///      If the claim is complete, the ticket is burned. This would lower secondary market attack vectors that
    ///      include claiming before selling.
    /// @param ticketIndex The index of the ticket
    /// @param t The ticket
    /// @return The ticket id
    function _getTicketId(uint256 ticketIndex, ctypes.Ticket memory t) internal pure returns (uint256) {
        return ticketIndex << 128 | uint256(t.size);
    }

    /// @dev Retrieves the ticket index from its id
    /// @param ticketId The ticket id
    /// @return The ticket index
    function _getTicketIdx(uint256 ticketId) internal pure returns (uint256) {
        return ticketId >> 128;
    }

    /// @dev Internal utility to create a new ticket
    /// @param amount The amount of shares in the ticket
    /// @param owner The owner of the ticket
    function _printTicket(uint128 amount, address owner) internal {
        IvPool pool = _castedPool();
        uint256 totalUnderlyingSupply = pool.totalUnderlyingSupply();
        uint256 totalSupply = pool.totalSupply();
        ctypes.Ticket[] storage ticketArray = $tickets.get();
        uint256 ticketsLength = ticketArray.length;
        ctypes.Ticket memory lastTicket =
            ticketArray.length > 0 ? ticketArray[ticketsLength - 1] : ctypes.Ticket({position: 0, size: 0, maxExitable: 0});
        ctypes.Ticket memory newTicket = ctypes.Ticket({
            position: lastTicket.position + lastTicket.size,
            size: amount,
            maxExitable: uint128(LibUint256.mulDiv(amount, totalUnderlyingSupply, totalSupply))
        });
        uint256 ticketId = _getTicketId(ticketsLength, newTicket);
        ticketArray.push(newTicket);
        _mint(owner, ticketId);
        emit PrintedTicket(owner, uint32(ticketsLength), ticketId, newTicket);
    }

    /// @notice The parameters of the consume call
    /// @param ticketId The ticket id
    /// @param ticketIdx The index of the ticket
    /// @param t The ticket itself
    /// @param caskId The cask id
    /// @param c The cask itself
    /// @param totalCaskCount The total number of casks
    /// @param depth The initial depth of the consume call
    /// @param ethToPay The resulting eth to pay the user
    struct ConsumeTicketParameters {
        uint256 ticketId;
        uint256 ticketIdx;
        ctypes.Ticket t;
        uint32 caskId;
        ctypes.Cask c;
        uint256 totalCaskCount;
        uint16 depth;
        uint256 ethToPay;
    }

    /// @dev Internal utility to consume a ticket.
    ///      Will call itself recursively to consume the ticket on all the casks it overlaps.
    ///      Recursive calls are limited to the initial depth.
    /// @param params The parameters of the consume call
    function _consumeTicket(ConsumeTicketParameters memory params) internal {
        // we compute the end position of the cask
        uint256 caskEnd = params.c.position + params.c.size;

        // we compute the amount of shares and eth that overlap between the ticket and the cask
        uint128 overlappingAmount = uint128(LibUint256.min(params.t.size, caskEnd - params.t.position));
        uint128 overlappingEthAmount = uint128(LibUint256.mulDiv(overlappingAmount, params.c.value, params.c.size));
        uint128 maxRedeemableEthAmount = uint128(LibUint256.mulDiv(overlappingAmount, params.t.maxExitable, params.t.size));

        // we initialize the unclaimable amount to 0 before checking if the ticket is exceeding the capped ticket rate
        uint256 unclaimableAmount = 0;

        // then we check if the overlapping amount is not exceeding the capped ticket rate
        // and if it's the case we adjust the amount of eth we can pay
        if (maxRedeemableEthAmount < overlappingEthAmount) {
            unclaimableAmount = overlappingEthAmount - maxRedeemableEthAmount;
            overlappingEthAmount = maxRedeemableEthAmount;
            _setUnclaimedFunds($unclaimedFunds.get() + unclaimableAmount);
        }

        // we update the ticket in memory
        params.t.position += overlappingAmount;
        params.t.size -= overlappingAmount;
        params.t.maxExitable -= overlappingEthAmount;

        // we update the total to pay for this ticket
        params.ethToPay += overlappingEthAmount;

        // we log the step
        emit FilledTicket(params.ticketId, params.caskId, uint128(overlappingAmount), overlappingEthAmount, unclaimableAmount);

        // if
        // - the ticket is not empty
        // - there are more casks to consume
        // - we are not at the maximum depth
        // then we call this method recursively with the next cask
        // otherwise we update the ticket in storage and burn it if it's empty
        if (params.t.size > 0 && params.caskId + 1 < params.totalCaskCount && params.depth > 0) {
            params.caskId += 1;
            params.c = $casks.get()[params.caskId];
            params.depth -= 1;
            _consumeTicket(params);
        } else {
            if (params.t.size == 0) {
                _burn(params.ticketId);
            }
            ctypes.Ticket[] storage ticketArray = $tickets.get();
            ticketArray[params.ticketIdx] = params.t;
        }
    }

    /// @dev Internal utility to set the unclaimed funds buffer
    /// @param newUnclaimedFunds The new unclaimed funds buffer
    function _setUnclaimedFunds(uint256 newUnclaimedFunds) internal {
        $unclaimedFunds.set(newUnclaimedFunds);
        emit SetUnclaimedFunds(newUnclaimedFunds);
    }

    /// @dev Internal utility to set the transfer enabled flag
    /// @param value The new transfer enabled flag
    function _setTransferEnabled(bool value) internal {
        $transferEnabled.set(value);
        emit SetTransferEnabled(value);
    }

    /// @dev Internal utility to set the token URI image URL
    /// @param newTokenUriImageUrl The new token URI image URL
    function _setTokenUriImageUrl(string calldata newTokenUriImageUrl) internal {
        LibSanitize.notEmptyString(newTokenUriImageUrl);
        $tokenUriImageUrl.set(newTokenUriImageUrl);
        emit SetTokenUriImageUrl($tokenUriImageUrl.get());
    }
}

// SPDX-License-Identifier: BUSL-1.1
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity >=0.8.17;

import "./interfaces/IFixable.sol";

/// @title Fixable
/// @author mortimr @ Kiln
/// @dev Unstructured Storage Friendly
/// @notice The Fixable contract can be used on cubs to expose a safe noop to force a fix.
abstract contract Fixable is IFixable {
    /// @inheritdoc IFixable
    function fix() external {}
}

// SPDX-License-Identifier: UNLICENSED
pragma solidity 0.8.17;

import "openzeppelin-contracts/token/ERC721/IERC721Receiver.sol";

import "./types/address.sol";
import "./types/string.sol";
import "./types/mapping.sol";
import "./libs/LibSanitize.sol";
import "./Initializable.sol";
import "./interfaces/INFT.sol";

import "./uctypes/operator_approvals.sol";

/// @title NFT
/// @author mortimr @ Kiln
/// @notice NFT contract using utils.sol storage format.
// slither-disable-next-line unimplemented-functions
abstract contract NFT is INFT {
    using LString for types.String;
    using LUint256 for types.Uint256;
    using LMapping for types.Mapping;
    using LOperatorApprovalsMapping for uctypes.OperatorApprovalsMapping;

    using CUint256 for uint256;
    using CAddress for address;

    /// @dev ERC721 name of the contract.
    /// @dev Slot: keccak256(bytes("nft.1.name")) - 1
    types.String internal constant $name =
        types.String.wrap(0x8be0d77374e3002afd46fd09ae2c8e3afc7315322504f7f1a09d189f4925e72f);
    /// @dev ERC721 symbol of the contract.
    /// @dev Slot: keccak256(bytes("nft.1.symbol")) - 1
    types.String internal constant $symbol =
        types.String.wrap(0xddad2df2277e0186b34991db0b7ceafa36b49b76d0a1e87f6e4d44b6b17a207f);
    /// @dev Internal ID counter to keep track of minted tokens.
    /// @dev Slot: keccak256(bytes("nft.1.mintCounter")) - 1
    types.Uint256 internal constant $mintCounter =
        types.Uint256.wrap(0x3d706fc25ad0e96a2c3fb1b58cdd70ba377f331d59f761caecaf2f3a236d99a1);
    /// @dev Internal burn counter used to keep track of the total supply.
    /// @dev Slot: keccak256(bytes("nft.1.burnCounter")) - 1
    types.Uint256 internal constant $burnCounter =
        types.Uint256.wrap(0x0644144c18bf2aa8e15d5433cc3f6e2273ab9ccd122cd4f430275a2997cc0dc2);
    /// @dev Internal mapping that holds the links between owners and NFT IDs.
    /// @dev Type: mapping (uint256 => address)
    /// @dev Slot: keccak256(bytes("nft.1.owners")) - 1
    types.Mapping internal constant $owners =
        types.Mapping.wrap(0xc1f66d46ebf7070ef20209d66f741219b00fb896714319503d158a28b0d103d3);
    /// @dev Internal mapping that holds the balances of every owner (how many NFTs they own).
    /// @dev Type: mapping (address => uint256)
    /// @dev Slot: keccak256(bytes("nft.1.balances")) - 1
    types.Mapping internal constant $balances =
        types.Mapping.wrap(0xf9245bc1df90ea86e77b9f2423fe9cc12aa083c8ab9a55e727b285192b30d98a);
    /// @dev Internal mapping that holds the token approval data.
    /// @dev Type: mapping (uint256 => address)
    /// @dev Slot: keccak256(bytes("nft.1.tokenApprovals")) - 1
    types.Mapping internal constant $tokenApprovals =
        types.Mapping.wrap(0x3790264503275ecd52e8f0b419eb5ce016ca8a1f0fbac5a9ede429d0c1732004);
    /// @dev Internal mapping of operator approvals.
    /// @dev Type: mapping (address => mapping (address => bool))
    /// @dev Slot: keccak256(bytes("nft.1.operatorApprovals")) - 1
    uctypes.OperatorApprovalsMapping internal constant $operatorApprovals =
        uctypes.OperatorApprovalsMapping.wrap(0x6c716a91f6b5f5a0aa2affaf44bd88ea94ec69e363cf1fe9251e00a0fcc6c34e);

    /// @dev Internal initializer to call when first deploying the contract.
    // slither-disable-next-line dead-code
    function initializeNFT(string memory name_, string memory symbol_) internal {
        _setName(name_);
        _setSymbol(symbol_);
    }

    /// @notice Returns the token uri for the given token id.
    /// @dev To override
    /// @param tokenId The token id to query
    function tokenURI(uint256 tokenId) external view virtual returns (string memory);

    /// @notice Internal hook happening at each transfer. Not called during mint or burn. Use _onMint and _onBurn instead.
    ///         The hook is called before state transitions are made.
    /// @dev To override
    /// @param from The address sending the token
    /// @param to The address receiving the token
    /// @param tokenId The token id
    function _onTransfer(address from, address to, uint256 tokenId) internal virtual;

    /// @notice Internal hook happening at each mint.
    ///         The hook is called before state transitions are made.
    /// @dev To override
    /// @param to The address receiving the token
    /// @param tokenId The token id
    function _onMint(address to, uint256 tokenId) internal virtual;

    /// @notice Internal hook happening at each burn.
    ///         The hook is called before state transitions are made.
    /// @dev To override
    /// @param tokenId The token id
    function _onBurn(uint256 tokenId) internal virtual;

    /// @inheritdoc INFT
    function totalSupply() external view returns (uint256) {
        return $mintCounter.get() - $burnCounter.get();
    }

    /// @inheritdoc IERC721
    function balanceOf(address owner) public view virtual override returns (uint256) {
        LibSanitize.notZeroAddress(owner);
        return $balances.get()[owner.k()];
    }

    /// @inheritdoc IERC721
    function ownerOf(uint256 tokenId) public view virtual override returns (address) {
        address owner = _ownerOf(tokenId);
        if (owner == address(0)) {
            revert InvalidTokenId(tokenId);
        }
        return owner;
    }

    /// @inheritdoc IERC721Metadata
    function name() external view virtual returns (string memory) {
        return string(abi.encodePacked($name.get()));
    }

    /// @inheritdoc IERC721Metadata
    function symbol() external view virtual returns (string memory) {
        return string(abi.encodePacked($symbol.get()));
    }

    /// @inheritdoc IERC165
    function supportsInterface(bytes4 interfaceId) external pure returns (bool) {
        return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId;
    }

    /// @inheritdoc IERC721
    function approve(address to, uint256 tokenId) public virtual override {
        address owner = _ownerOf(tokenId);
        if (to == owner) {
            revert ApprovalToOwner(owner);
        }

        if (msg.sender != owner && !isApprovedForAll(owner, msg.sender)) {
            revert LibErrors.Unauthorized(msg.sender, owner);
        }

        _approve(to, owner, tokenId);
    }

    /// @inheritdoc IERC721
    function getApproved(uint256 tokenId) public view virtual override returns (address) {
        _requireExists(tokenId);

        return $tokenApprovals.get()[tokenId].toAddress();
    }

    /// @inheritdoc IERC721
    function setApprovalForAll(address operator, bool approved) public virtual override {
        _setApprovalForAll(msg.sender, operator, approved);
    }

    /// @inheritdoc IERC721
    function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
        return $operatorApprovals.get()[owner][operator];
    }

    /// @inheritdoc IERC721
    function transferFrom(address from, address to, uint256 tokenId) public virtual override {
        if (!_isApprovedOrOwner(msg.sender, tokenId)) {
            revert LibErrors.Unauthorized(msg.sender, _ownerOf(tokenId));
        }
        _transfer(from, to, tokenId);
    }

    /// @inheritdoc IERC721
    function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override {
        safeTransferFrom(from, to, tokenId, "");
    }

    /// @inheritdoc IERC721
    function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data) public virtual override {
        if (!_isApprovedOrOwner(msg.sender, tokenId)) {
            revert LibErrors.Unauthorized(msg.sender, _ownerOf(tokenId));
        }
        _safeTransfer(from, to, tokenId, data);
    }

    /// @dev Internal utility to set the ERC721 name value.
    /// @param newName The new name to set
    // slither-disable-next-line dead-code
    function _setName(string memory newName) internal {
        LibSanitize.notEmptyString(newName);
        $name.set(newName);
        emit SetName(newName);
    }

    /// @dev Internal utility to set the ERC721 symbol value.
    /// @param newSymbol The new symbol to set
    // slither-disable-next-line dead-code
    function _setSymbol(string memory newSymbol) internal {
        LibSanitize.notEmptyString(newSymbol);
        $symbol.set(newSymbol);
        emit SetSymbol(newSymbol);
    }

    /// @dev Internal utility to perform a safe transfer (transfer + extra checks on contracts).
    /// @param from The address sending the token
    /// @param to The address receiving the token
    /// @param tokenId The ID of the token
    /// @param data The extra data provided to contract callback calls
    function _safeTransfer(address from, address to, uint256 tokenId, bytes memory data) internal virtual {
        _transfer(from, to, tokenId);
        if (!_checkOnERC721Received(from, to, tokenId, data)) {
            revert NonERC721ReceiverTransfer(from, to, tokenId, data);
        }
    }

    /// @dev Internal utility to retrieve the owner of the specified token id.
    /// @param tokenId The token id to lookup
    /// @return The address of the token owner
    function _ownerOf(uint256 tokenId) internal view virtual returns (address) {
        return $owners.get()[tokenId].toAddress();
    }

    /// @dev Internal utility to verify if a token id exists.
    /// @param tokenId The token id to verify
    /// @return True if exists
    function _exists(uint256 tokenId) internal view virtual returns (bool) {
        return _ownerOf(tokenId) != address(0);
    }

    /// @dev Internal utility to check if the specified address is either approved by the owner or the owner for the given token id.
    /// @param spender The address to verify
    /// @param tokenId The token id to verify
    /// @return True if approved or owner
    function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
        address owner = _ownerOf(tokenId);
        return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);
    }

    /// @dev Internal utility to perform a safe mint operation (mint + extra checks on contracts).
    /// @param to The address receiving the token
    /// @param tokenId The token id to create
    /// @param data The xtra data provided to contract callback calls
    // slither-disable-next-line dead-code
    function _safeMint(address to, uint256 tokenId, bytes memory data) internal virtual {
        _mint(to, tokenId);
        if (!_checkOnERC721Received(address(0), to, tokenId, data)) {
            revert NonERC721ReceiverTransfer(address(0), to, tokenId, data);
        }
    }

    /// @dev Internal utility to mint the desired token id.
    /// @param to The address that receives the token id
    /// @param tokenId The token id to create
    // slither-disable-next-line dead-code
    function _mint(address to, uint256 tokenId) internal virtual {
        if (to == address(0)) {
            revert IllegalMintToZero();
        }

        if (_exists(tokenId)) {
            revert TokenAlreadyMinted(tokenId);
        }

        _onMint(to, tokenId);

        if (_exists(tokenId)) {
            revert TokenAlreadyMinted(tokenId);
        }

        unchecked {
            // increase owner balance
            $balances.get()[to.k()] += 1;
            // increase global mint counter
            $mintCounter.set($mintCounter.get() + 1);
        }

        // set owner
        $owners.get()[tokenId] = to.v();

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

    /// @dev Internal utility to burn the desired token id.
    /// @param tokenId The token id to burn
    // slither-disable-next-line dead-code
    function _burn(uint256 tokenId) internal virtual {
        _requireExists(tokenId);
        _onBurn(tokenId);
        _requireExists(tokenId);

        address from = $owners.get()[tokenId].toAddress();

        unchecked {
            // decrease owner balance
            $balances.get()[from.k()] -= 1;
            // increase global burn counter
            $burnCounter.set($burnCounter.get() + 1);
        }

        // clear owner and approvals
        delete $tokenApprovals.get()[tokenId];
        delete $owners.get()[tokenId];

        emit Transfer(from, address(0), tokenId);
    }

    /// @dev Internal utility to perform a regular transfer of a token.
    /// @param from The address sending the token
    /// @param to The address receiving the token
    /// @param tokenId The tokenId to transfer
    function _transfer(address from, address to, uint256 tokenId) internal virtual {
        if (to == address(0)) {
            revert IllegalTransferToZero();
        }

        if (_ownerOf(tokenId) != from) {
            revert LibErrors.Unauthorized(_ownerOf(tokenId), from);
        }

        _onTransfer(from, to, tokenId);

        if (_ownerOf(tokenId) != from) {
            revert LibErrors.Unauthorized(_ownerOf(tokenId), from);
        }

        // Clear approvals from the previous owner
        delete $tokenApprovals.get()[tokenId];

        unchecked {
            $balances.get()[from.k()] -= 1;
            $balances.get()[to.k()] += 1;
        }
        $owners.get()[tokenId] = to.v();

        emit Transfer(from, to, tokenId);
    }

    /// @dev Internal utility to approve an account for a token id.
    /// @param to The address receiving the approval
    /// @param owner The owner of the token id
    /// @param tokenId The token id
    function _approve(address to, address owner, uint256 tokenId) internal virtual {
        $tokenApprovals.get()[tokenId] = to.v();
        emit Approval(owner, to, tokenId);
    }

    /// @dev Internal utility to approve an account for all tokens of another account.
    /// @param owner The address owning the tokens
    /// @param operator The address receiving the approval
    /// @param approved True if approved, false otherwise
    function _setApprovalForAll(address owner, address operator, bool approved) internal virtual {
        if (owner == operator) {
            revert ApprovalToOwner(owner);
        }
        $operatorApprovals.get()[owner][operator] = approved;
        emit ApprovalForAll(owner, operator, approved);
    }

    /// @dev Internal utility to check and revert if a token doesn't exists.
    /// @param tokenId The token id to verify
    function _requireExists(uint256 tokenId) internal view virtual {
        if (!_exists(tokenId)) {
            revert InvalidTokenId(tokenId);
        }
    }

    /// @dev Internal utility to perform checks upon transfer in the case of sending to a contract.
    /// @param from The address sending the token
    /// @param to The address receiving the token
    /// @param data The extra data to provide in the case where to is a contract
    /// @return True if all checks are good
    // slither-disable-next-line variable-scope,calls-loop,unused-return
    function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory data)
        private
        returns (bool)
    {
        if (to.code.length > 0) {
            try IERC721Receiver(to).onERC721Received(msg.sender, from, tokenId, data) returns (bytes4 retval) {
                return retval == IERC721Receiver.onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert NonERC721ReceiverTransfer(from, to, tokenId, data);
                } else {
                    // slither-disable-next-line assembly
                    assembly {
                        revert(add(32, reason), mload(reason))
                    }
                }
            }
        } else {
            return true;
        }
    }
}

// SPDX-License-Identifier: BUSL-1.1
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity >=0.8.17;

import "./types/uint256.sol";

/// @title Implementation
/// @author mortimr @ Kiln
/// @dev Unstructured Storage Friendly
/// @notice This contracts must be used on all implementation contracts. It ensures that the initializers are only callable through the proxy.
///         This will brick the implementation and make it unusable directly without using delegatecalls.
abstract contract Implementation {
    using LUint256 for types.Uint256;

    /// @dev The version number in storage in the initializable contract.
    /// @dev Slot: keccak256(bytes("initializable.version"))) - 1
    types.Uint256 internal constant $initializableVersion =
        types.Uint256.wrap(0xc4c7f1ccb588f39a9aa57be6cfd798d73912e27b44cfa18e1a5eba7b34e81a76);

    constructor() {
        $initializableVersion.set(type(uint256).max);
    }
}

// SPDX-License-Identifier: BUSL-1.1
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity >=0.8.17;

import "./types.sol";

library LBool {
    // slither-disable-next-line dead-code
    function get(types.Bool position) internal view returns (bool data) {
        // slither-disable-next-line assembly
        assembly {
            data := sload(position)
        }
    }

    // slither-disable-next-line dead-code
    function set(types.Bool position, bool data) internal {
        // slither-disable-next-line assembly
        assembly {
            sstore(position, data)
        }
    }

    // slither-disable-next-line dead-code
    function del(types.Bool position) internal {
        // slither-disable-next-line assembly
        assembly {
            sstore(position, 0)
        }
    }
}

library CBool {
    // slither-disable-next-line dead-code
    function toBytes32(bool val) internal pure returns (bytes32) {
        return bytes32(toUint256(val));
    }

    // slither-disable-next-line dead-code
    function toAddress(bool val) internal pure returns (address) {
        return address(uint160(toUint256(val)));
    }

    // slither-disable-next-line dead-code
    function toUint256(bool val) internal pure returns (uint256 converted) {
        // slither-disable-next-line assembly
        assembly {
            converted := iszero(iszero(val))
        }
    }

    /// @dev This method should be used to convert a bool to a uint256 when used as a key in a mapping.
    // slither-disable-next-line dead-code
    function k(bool val) internal pure returns (uint256) {
        return toUint256(val);
    }

    /// @dev This method should be used to convert a bool to a uint256 when used as a value in a mapping.
    // slither-disable-next-line dead-code
    function v(bool val) internal pure returns (uint256) {
        return toUint256(val);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides a set of functions to operate with Base64 strings.
 *
 * _Available since v4.5._
 */
library Base64 {
    /**
     * @dev Base64 Encoding/Decoding Table
     */
    string internal constant _TABLE = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

    /**
     * @dev Converts a `bytes` to its Bytes64 `string` representation.
     */
    function encode(bytes memory data) internal pure returns (string memory) {
        /**
         * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence
         * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol
         */
        if (data.length == 0) return "";

        // Loads the table into memory
        string memory table = _TABLE;

        // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter
        // and split into 4 numbers of 6 bits.
        // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up
        // - `data.length + 2`  -> Round up
        // - `/ 3`              -> Number of 3-bytes chunks
        // - `4 *`              -> 4 characters for each chunk
        string memory result = new string(4 * ((data.length + 2) / 3));

        /// @solidity memory-safe-assembly
        assembly {
            // Prepare the lookup table (skip the first "length" byte)
            let tablePtr := add(table, 1)

            // Prepare result pointer, jump over length
            let resultPtr := add(result, 32)

            // Run over the input, 3 bytes at a time
            for {
                let dataPtr := data
                let endPtr := add(data, mload(data))
            } lt(dataPtr, endPtr) {

            } {
                // Advance 3 bytes
                dataPtr := add(dataPtr, 3)
                let input := mload(dataPtr)

                // To write each character, shift the 3 bytes (18 bits) chunk
                // 4 times in blocks of 6 bits for each character (18, 12, 6, 0)
                // and apply logical AND with 0x3F which is the number of
                // the previous character in the ASCII table prior to the Base64 Table
                // The result is then added to the table to get the character to write,
                // and finally write it in the result pointer but with a left shift
                // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits

                mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))
                resultPtr := add(resultPtr, 1) // Advance

                mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))
                resultPtr := add(resultPtr, 1) // Advance

                mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))
                resultPtr := add(resultPtr, 1) // Advance

                mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))
                resultPtr := add(resultPtr, 1) // Advance
            }

            // When data `bytes` is not exactly 3 bytes long
            // it is padded with `=` characters at the end
            switch mod(mload(data), 3)
            case 1 {
                mstore8(sub(resultPtr, 1), 0x3d)
                mstore8(sub(resultPtr, 2), 0x3d)
            }
            case 2 {
                mstore8(sub(resultPtr, 1), 0x3d)
            }
        }

        return result;
    }
}

// SPDX-License-Identifier: BUSL-1.1
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity 0.8.17;

import "utils.sol/libs/LibUint256.sol";
import "utils.sol/libs/LibBytes.sol";
import "openzeppelin-contracts/utils/Strings.sol";

/// @title Stringify Library  - A library for converting numbers to strings with decimal support
library LibStringify {
    /// @dev Generates a string in memory with the requested count of zeroes
    /// @param count The number of zeroes to generate
    /// @return The generated string
    function generateZeroes(uint256 count) internal pure returns (string memory) {
        bytes memory zeroes = new bytes(count);
        for (uint256 idx = 0; idx < count;) {
            zeroes[idx] = "0";
            unchecked {
                ++idx;
            }
        }
        return string(zeroes);
    }

    /// @dev Converts a uint256 to a string with the requested number of decimals
    /// @param value The value to convert
    /// @param decimals The number of decimals to include
    /// @param maxIncludedDecimals The maximum number of decimals to include
    /// @return The generated string
    function uintToDecimalString(uint256 value, uint8 decimals, uint8 maxIncludedDecimals) internal pure returns (string memory) {
        if (value == 0) {
            return "0";
        }
        bytes memory uintToString = bytes(Strings.toString(value));
        if (decimals == 0) {
            return string(uintToString);
        }
        uint256 len = uintToString.length;
        if (len > decimals) {
            if (maxIncludedDecimals == 0) {
                return string(LibBytes.slice(bytes(uintToString), 0, len - decimals));
            }
            uintToString = abi.encodePacked(
                LibBytes.slice(bytes(uintToString), 0, len - decimals),
                ".",
                LibBytes.slice(bytes(uintToString), len - decimals, LibUint256.min(decimals, maxIncludedDecimals))
            );
        } else {
            if (maxIncludedDecimals <= decimals - len) {
                return "0";
            }
            uintToString = abi.encodePacked(
                "0.",
                LibBytes.slice(
                    abi.encodePacked(generateZeroes(decimals - len), uintToString), 0, LibUint256.min(decimals, maxIncludedDecimals)
                )
            );
        }

        return string(uintToString);
    }
}

// SPDX-License-Identifier: BUSL-1.1
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity 0.8.17;

import "./ctypes.sol";

/// @title Ticket Array Custom Type
library LTicketArray {
    function get(ctypes.TicketArray position) internal pure returns (ctypes.Ticket[] storage data) {
        // slither-disable-next-line assembly
        assembly {
            data.slot := position
        }
    }
}

// SPDX-License-Identifier: BUSL-1.1
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity 0.8.17;

import "./ctypes.sol";

/// @title Cask Array Custom Type
library LCaskArray {
    function get(ctypes.CaskArray position) internal pure returns (ctypes.Cask[] storage data) {
        // slither-disable-next-line assembly
        assembly {
            data.slot := position
        }
    }
}

// SPDX-License-Identifier: MIT
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity 0.8.17;

import "utils.sol/interfaces/IFixable.sol";

import "./IvPoolSharesReceiver.sol";
import "../ctypes/ctypes.sol";

/// @title Exit Queue Interface
/// @author mortimr @ Kiln
/// @notice The exit queue stores exit requests until they are filled and claimable
interface IvExitQueue is IFixable, IvPoolSharesReceiver {
    /// @notice Emitted when the stored Pool address is changed
    /// @param pool The new pool address
    event SetPool(address pool);

    /// @notice Emitted when the stored token uri image url is changed
    /// @param tokenUriImageUrl The new token uri image url
    event SetTokenUriImageUrl(string tokenUriImageUrl);

    /// @notice Emitted when the transfer enabled status is changed
    /// @param enabled The new transfer enabled status
    event SetTransferEnabled(bool enabled);

    /// @notice Emitted when the unclaimed funds buffer is changed
    /// @param unclaimedFunds The new unclaimed funds buffer
    event SetUnclaimedFunds(uint256 unclaimedFunds);

    /// @notice Emitted when ether was supplied to the vPool
    /// @param amount The amount of ETH supplied
    event SuppliedEther(uint256 amount);

    /// @notice Emitted when a ticket is created
    /// @param owner The address of the ticket owner
    /// @param idx The index of the ticket
    /// @param id The ID of the ticket
    /// @param ticket The ticket details
    event PrintedTicket(address indexed owner, uint32 idx, uint256 id, ctypes.Ticket ticket);

    /// @notice Emitted when a cask is created
    /// @param id The ID of the cask
    /// @param cask The cask details
    event ReceivedCask(uint32 id, ctypes.Cask cask);

    /// @notice Emitted when a ticket is claimed against a cask, can happen several times for the same ticket but different casks
    /// @param ticketId The ID of the ticket
    /// @param caskId The ID of the cask
    /// @param amountFilled The amount of shares filled
    /// @param amountEthFilled The amount of ETH filled
    /// @param unclaimedEth The amount of ETH that is added to the unclaimed buffer
    event FilledTicket(
        uint256 indexed ticketId, uint32 indexed caskId, uint128 amountFilled, uint256 amountEthFilled, uint256 unclaimedEth
    );

    /// @notice Emitted when a ticket is "reminted" and its external id is modified
    /// @param oldTicketId The old ID of the ticket
    /// @param newTicketId The new ID of the ticket
    /// @param ticketIndex The index of the ticket
    event TicketIdUpdated(uint256 indexed oldTicketId, uint256 indexed newTicketId, uint32 indexed ticketIndex);

    /// @notice Emitted when a payment is made after a user performed a claim
    /// @param recipient The address of the recipient
    /// @param amount The amount of ETH paid
    event Payment(address indexed recipient, uint256 amount);

    /// @notice Transfer of tickets is disabled
    error TransferDisabled();

    /// @notice The provided ticket ID is invalid
    /// @param id The ID of the ticket
    error InvalidTicketId(uint256 id);

    /// @notice The provided cask ID is invalid
    /// @param id The ID of the cask
    error InvalidCaskId(uint32 id);

    /// @notice The provided ticket IDs and cask IDs are not the same length
    error InvalidLengths();

    /// @notice The ticket and cask are not associated
    /// @param ticketId The ID of the ticket
    /// @param caskId The ID of the cask
    error TicketNotMatchingCask(uint256 ticketId, uint32 caskId);

    /// @notice The claim transfer failed
    /// @param recipient The address of the recipient
    /// @param rdata The revert data
    error ClaimTransferFailed(address recipient, bytes rdata);

    enum ClaimStatus {
        CLAIMED,
        PARTIALLY_CLAIMED,
        SKIPPED
    }

    /// @notice Initializes the ExitQueue (proxy pattern)
    /// @param vpool The address of the associated vPool
    /// @param newTokenUriImageUrl The token uri image url
    function initialize(address vpool, string calldata newTokenUriImageUrl) external;

    /// @notice Returns the token uri image url
    /// @return The token uri image url
    function tokenUriImageUrl() external view returns (string memory);

    /// @notice Returns the transfer enabled status
    /// @return True if transfers are enabled
    function transferEnabled() external view returns (bool);

    /// @notice Returns the unclaimed funds buffer
    /// @return The unclaimed funds buffer
    function unclaimedFunds() external view returns (uint256);

    /// @notice Returns the id of the ticket based on the index
    /// @param idx The index of the ticket
    function ticketIdAtIndex(uint32 idx) external view returns (uint256);

    /// @notice Returns the details about the ticket with the provided ID
    /// @param id The ID of the ticket
    /// @return The ticket details
    function ticket(uint256 id) external view returns (ctypes.Ticket memory);

    /// @notice Returns the number of tickets
    /// @return The number of tickets
    function ticketCount() external view returns (uint256);

    /// @notice Returns the details about the cask with the provided ID
    /// @param id The ID of the cask
    /// @return The cask details
    function cask(uint32 id) external view returns (ctypes.Cask memory);

    /// @notice Returns the number of casks
    /// @return The number of casks
    function caskCount() external view returns (uint256);

    /// @notice Resolves the provided tickets to their associated casks or provide resolution error codes
    /// @dev TICKET_ID_OUT_OF_BOUNDS = -1;
    ///      TICKET_ALREADY_CLAIMED = -2;
    ///      TICKET_PENDING = -3;
    /// @param ticketIds The IDs of the tickets to resolve
    /// @return caskIdsOrErrors The IDs of the casks or error codes
    function resolve(uint256[] memory ticketIds) external view returns (int64[] memory caskIdsOrErrors);

    /// @notice Adds eth and creates a new cask
    /// @dev only callbacle by the vPool
    /// @param shares The amount of shares to cover with the provided eth
    function feed(uint256 shares) external payable;

    /// @notice Pulls eth from the unclaimed eth buffer
    /// @dev Only callable by the vPool
    /// @param max The maximum amount of eth to pull
    function pull(uint256 max) external;

    /// @notice Claims the provided tickets against their associated casks
    /// @dev To retrieve the list of casks, an off-chain resolve call should be performed
    /// @param ticketIds The IDs of the tickets to claim
    /// @param caskIds The IDs of the casks to claim against
    /// @param maxClaimDepth The maxiumum recursion depth for the claim, 0 for unlimited
    function claim(uint256[] calldata ticketIds, uint32[] calldata caskIds, uint16 maxClaimDepth)
        external
        returns (ClaimStatus[] memory statuses);

    /// @notice Sets the token uri image inside the returned token uri
    /// @param newTokenUriImageUrl The new token uri image url
    function setTokenUriImageUrl(string calldata newTokenUriImageUrl) external;

    /// @notice Enables or disables transfers of the tickets
    /// @param value True to allow transfers
    function setTransferEnabled(bool value) external;
}

// SPDX-License-Identifier: MIT
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity 0.8.17;

import "utils.sol/interfaces/IFixable.sol";

import "../ctypes/ctypes.sol";

/// @title Pool Interface
/// @author mortimr @ Kiln
/// @notice The vPool contract is in charge of pool funds and fund validators from the vFactory
interface IvPool is IFixable {
    /// @notice Emitted at construction time when all contract addresses are set
    /// @param factory The address of the vFactory contract
    /// @param withdrawalRecipient The address of the withdrawal recipient contract
    /// @param execLayerRecipient The address of the execution layer recipient contract
    /// @param coverageRecipient The address of the coverage recipient contract
    /// @param oracleAggregator The address of the oracle aggregator contract
    /// @param exitQueue The address of the exit queue contract
    event SetContractLinks(
        address factory,
        address withdrawalRecipient,
        address execLayerRecipient,
        address coverageRecipient,
        address oracleAggregator,
        address exitQueue
    );

    /// @notice Emitted when the global validator extra data is changed
    /// @param extraData New extra data used on validator purchase
    event SetValidatorGlobalExtraData(string extraData);

    /// @notice Emitted when a depositor authorization changed
    /// @param depositor The address of the depositor
    /// @param allowed True if allowed to deposit
    event ApproveDepositor(address depositor, bool allowed);

    /// @notice Emitted when a depositor performs a deposit
    /// @param sender The transaction sender
    /// @param amount The deposit amount
    /// @param mintedShares The amount of shares created
    event Deposit(address indexed sender, uint256 amount, uint256 mintedShares);

    /// @notice Emitted when the vPool purchases validators to the vFactory
    /// @param validators The list of IDs (not BLS Public keys)
    event PurchasedValidators(uint256[] validators);

    /// @notice Emitted when new shares are created
    /// @param account The account receiving the new shares
    /// @param amount The amount of shares created
    /// @param totalSupply The new totalSupply value
    event Mint(address indexed account, uint256 amount, uint256 totalSupply);

    /// @notice Emitted when shares are burned
    /// @param burner The account burning shares
    /// @param amount The amount of burned shares
    /// @param totalSupply The new totalSupply value
    event Burn(address burner, uint256 amount, uint256 totalSupply);

    /// @notice Emitted when shares are transfered
    /// @param from The account sending the shares
    /// @param to The account receiving the shares
    /// @param value The value transfered
    event Transfer(address indexed from, address indexed to, uint256 value);

    /// @notice Emitted when shares are approved for a spender
    /// @param owner The account approving the shares
    /// @param spender The account receiving the spending rights
    /// @param value The value of the approval. Max uint256 means infinite (will never decrease)
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /// @notice Emitted when shares are voided (action of burning without redeeming anything on purpose)
    /// @param voider The account voiding the shares
    /// @param amount The amount of voided shares
    event VoidedShares(address voider, uint256 amount);

    /// @notice Emitted when ether is injected into the system (outside of the deposit flow)
    /// @param injecter The account injecting the ETH
    /// @param amount The amount of injected ETH
    event InjectedEther(address injecter, uint256 amount);

    /// @notice Emitted when the report processing is finished
    /// @param epoch The epoch number
    /// @param report The received report structure
    /// @param traces Internal traces with key figures
    event ProcessedReport(uint256 indexed epoch, ctypes.ValidatorsReport report, ReportTraces traces);

    /// @notice Emitted when rewards are distributed to the node operator
    /// @param operatorTreasury The address receiving the rewards
    /// @param sharesCount The amount of shares created to pay the rewards
    /// @param sharesValue The value in ETH of the newly minted shares
    /// @param totalSupply The updated totalSupply value
    /// @param totalUnderlyingSupply The updated totalUnderlyingSupply value
    event DistributedOperatorRewards(
        address indexed operatorTreasury, uint256 sharesCount, uint256 sharesValue, uint256 totalSupply, uint256 totalUnderlyingSupply
    );

    /// @notice Emitted when the report bounds are updated
    /// @param maxAPRUpperBound The maximum APR allowed during oracle reports
    /// @param maxAPRUpperCoverageBoost The APR boost allowed only for coverage funds
    /// @param maxRelativeLowerBound The max relative delta in underlying supply authorized during losses of funds
    event SetReportBounds(uint64 maxAPRUpperBound, uint64 maxAPRUpperCoverageBoost, uint64 maxRelativeLowerBound);

    /// @notice Emitted when the epochs per frame value is updated
    /// @param epochsPerFrame The new epochs per frame value
    event SetEpochsPerFrame(uint256 epochsPerFrame);

    /// @notice Emitted when the consensus layer spec is updated
    /// @param consensusLayerSpec The new consensus layer spec
    event SetConsensusLayerSpec(ctypes.ConsensusLayerSpec consensusLayerSpec);

    /// @notice Emitted when the operator fee is updated
    /// @param operatorFeeBps The new operator fee value
    event SetOperatorFee(uint256 operatorFeeBps);

    /// @notice Emitted when the deposited ether buffer is updated
    /// @param depositedEthers The new deposited ethers value
    event SetDepositedEthers(uint256 depositedEthers);

    /// @notice Emitted when the committed ether buffer is updated
    /// @param committedEthers The new committed ethers value
    event SetCommittedEthers(uint256 committedEthers);

    /// @notice Emitted when the requested exits is updated
    /// @param newRequestedExits The new requested exits count
    event SetRequestedExits(uint32 newRequestedExits);

    /// @notice The balance was too low for the requested operation
    /// @param account The account trying to perform the operation
    /// @param currentBalance The current account balance
    /// @param requiredAmount The amount that was required to perform the operation
    error BalanceTooLow(address account, uint256 currentBalance, uint256 requiredAmount);

    /// @notice The allowance was too low for the requested operation
    /// @param account The account trying to perform the operation
    /// @param operator The account triggering the operation on behalf of the account
    /// @param currentApproval The current account approval towards the operator
    /// @param requiredAmount The amount that was required to perform the operation
    error AllowanceTooLow(address account, address operator, uint256 currentApproval, uint256 requiredAmount);

    /// @notice Thrown when approval for an account and spender is already zero.
    /// @param account The account for which approval was attempted to be set to zero.
    /// @param spender The spender for which approval was attempted to be set to zero.
    error ApprovalAlreadyZero(address account, address spender);

    /// @notice Thrown when there is an error with a share receiver.
    /// @param err The error message.
    error ShareReceiverError(string err);

    /// @notice Thrown when there is no validator available to purchase.
    error NoValidatorToPurchase();

    /// @notice Thrown when the epoch of a report is too old.
    /// @param epoch The epoch of the report.
    /// @param expectEpoch The expected epoch for the operation.
    error EpochTooOld(uint256 epoch, uint256 expectEpoch);

    /// @notice Thrown when an epoch is not the first epoch of a frame.
    /// @param epoch The epoch that was not the first epoch of a frame.
    error EpochNotFrameFirst(uint256 epoch);

    /// @notice Thrown when an epoch is not final.
    /// @param epoch The epoch that was not final.
    /// @param currentTimestamp The current timestamp.
    /// @param finalTimestamp The final timestamp of the frame.
    error EpochNotFinal(uint256 epoch, uint256 currentTimestamp, uint256 finalTimestamp);

    /// @notice Thrown when the validator count is decreasing.
    /// @param previousValidatorCount The previous validator count.
    /// @param validatorCount The current validator count.
    error DecreasingValidatorCount(uint256 previousValidatorCount, uint256 validatorCount);

    /// @notice Thrown when the stopped validator count is decreasing.
    /// @param previousStoppedValidatorCount The previous stopped validator count.
    /// @param stoppedValidatorCount The current stopped validator count.
    error DecreasingStoppedValidatorCount(uint256 previousStoppedValidatorCount, uint256 stoppedValidatorCount);

    /// @notice Thrown when the slashed balance sum is decreasing.
    /// @param reportedSlashedBalanceSum The reported slashed balance sum.
    /// @param lastReportedSlashedBalanceSum The last reported slashed balance sum.
    error DecreasingSlashedBalanceSum(uint256 reportedSlashedBalanceSum, uint256 lastReportedSlashedBalanceSum);

    /// @notice Thrown when the exited balance sum is decreasing.
    /// @param reportedExitedBalanceSum The reported exited balance sum.
    /// @param lastReportedExitedBalanceSum The last reported exited balance sum.
    error DecreasingExitedBalanceSum(uint256 reportedExitedBalanceSum, uint256 lastReportedExitedBalanceSum);

    /// @notice Thrown when the skimmed balance sum is decreasing.
    /// @param reportedSkimmedBalanceSum The reported skimmed balance sum.
    /// @param lastReportedSkimmedBalanceSum The last reported skimmed balance sum.
    error DecreasingSkimmedBalanceSum(uint256 reportedSkimmedBalanceSum, uint256 lastReportedSkimmedBalanceSum);

    /// @notice Thrown when the reported validator count is higher than the total activated validators
    /// @param stoppedValidatorsCount The reported stopped validator count.
    /// @param maxStoppedValidatorsCount The maximum allowed stopped validator count.
    error StoppedValidatorCountTooHigh(uint256 stoppedValidatorsCount, uint256 maxStoppedValidatorsCount);

    /// @notice Thrown when the reported exiting balance exceeds the total validator balance on the cl
    /// @param exiting The reported exiting balance.
    /// @param balance The total validator balance on the cl.
    error ExitingBalanceTooHigh(uint256 exiting, uint256 balance);

    /// @notice Thrown when the reported validator count is higher than the deposited validator count.
    /// @param reportedValidatorCount The reported validator count.
    /// @param depositedValidatorCount The deposited validator count.
    error ValidatorCountTooHigh(uint256 reportedValidatorCount, uint256 depositedValidatorCount);

    /// @notice Thrown when the coverage is higher than the loss.
    /// @param coverage The coverage.
    /// @param loss The loss.
    error CoverageHigherThanLoss(uint256 coverage, uint256 loss);

    /// @notice Thrown when the balance increase exceeds the maximum allowed balance increase.
    /// @param balanceIncrease The balance increase.
    /// @param maximumAllowedBalanceIncrease The maximum allowed balance increase.
    error UpperBoundCrossed(uint256 balanceIncrease, uint256 maximumAllowedBalanceIncrease);

    /// @notice Thrown when the balance increase exceeds the maximum allowed balance increase or maximum allowed coverage.
    /// @param balanceIncrease The balance increase.
    /// @param maximumAllowedBalanceIncrease The maximum allowed balance increase.
    /// @param maximumAllowedCoverage The maximum allowed coverage.
    error BoostedBoundCrossed(uint256 balanceIncrease, uint256 maximumAllowedBalanceIncrease, uint256 maximumAllowedCoverage);

    /// @notice Thrown when the balance decrease exceeds the maximum allowed balance decrease.
    /// @param balanceDecrease The balance decrease.
    /// @param maximumAllowedBalanceDecrease The maximum allowed balance decrease.
    error LowerBoundCrossed(uint256 balanceDecrease, uint256 maximumAllowedBalanceDecrease);

    /// @notice Thrown when the amount of shares to mint is computed to 0
    error InvalidNullMint();

    /// @notice Traces emitted at the end of the reporting process.
    /// @param preUnderlyingSupply The pre-reporting underlying supply.
    /// @param postUnderlyingSupply The post-reporting underlying supply.
    /// @param preSupply The pre-reporting supply.
    /// @param postSupply The post-reporting supply.
    /// @param newExitedEthers The new exited ethers.
    /// @param newSkimmedEthers The new skimmed ethers.
    /// @param exitBoostEthers The exit boost ethers.
    /// @param exitFedEthers The exit fed ethers.
    /// @param exitBurnedShares The exit burned shares.
    /// @param exitingProjection The exiting projection.
    /// @param baseFulfillableDemand The base fulfillable demand.
    /// @param extraFulfillableDemand The extra fulfillable demand.
    /// @param rewards The rewards. Can be negative when there is a loss, but cannot include coverage funds.
    /// @param delta The delta. Can be negative when there is a loss and include all pulled funds.
    /// @param increaseLimit The increase limit.
    /// @param coverageIncreaseLimit The coverage increase limit.
    /// @param decreaseLimit The decrease limit.
    /// @param consensusLayerDelta The consensus layer delta.
    /// @param pulledCoverageFunds The pulled coverage funds.
    /// @param pulledExecutionLayerRewards The pulled execution layer rewards.
    /// @param pulledExitQueueUnclaimedFunds The pulled exit queue unclaimed funds.
    struct ReportTraces {
        // supplied
        uint128 preUnderlyingSupply;
        uint128 postUnderlyingSupply;
        uint128 preSupply;
        uint128 postSupply;
        // new consensus layer funds
        uint128 newExitedEthers;
        uint128 newSkimmedEthers;
        // exit related funds
        uint128 exitBoostEthers;
        uint128 exitFedEthers;
        uint128 exitBurnedShares;
        uint128 exitingProjection;
        uint128 baseFulfillableDemand;
        uint128 extraFulfillableDemand;
        // rewards
        int128 rewards;
        // delta and details about sources of funds
        int128 delta;
        uint128 increaseLimit;
        uint128 coverageIncreaseLimit;
        uint128 decreaseLimit;
        int128 consensusLayerDelta;
        uint128 pulledCoverageFunds;
        uint128 pulledExecutionLayerRewards;
        uint128 pulledExitQueueUnclaimedFunds;
    }

    /// @notice Initializes the contract with the given parameters.
    /// @param addrs The addresses of the dependencies (factory, withdrawal recipient, exec layer recipient,
    ///              coverage recipient, oracle aggregator, exit queue).
    /// @param epochsPerFrame_ The number of epochs per frame.
    /// @param consensusLayerSpec_ The consensus layer spec.
    /// @param bounds_ The bounds for reporting.
    /// @param operatorFeeBps_ The operator fee in basis points.
    /// @param extraData_ The initial extra data that will be provided on each deposit
    function initialize(
        address[6] calldata addrs,
        uint256 epochsPerFrame_,
        ctypes.ConsensusLayerSpec calldata consensusLayerSpec_,
        uint64[3] calldata bounds_,
        uint256 operatorFeeBps_,
        string calldata extraData_
    ) external;

    /// @notice Returns the address of the factory contract.
    /// @return The address of the factory contract.
    function factory() external view returns (address);

    /// @notice Returns the address of the execution layer recipient contract.
    /// @return The address of the execution layer recipient contract.
    function execLayerRecipient() external view returns (address);

    /// @notice Returns the address of the coverage recipient contract.
    /// @return The address of the coverage recipient contract.
    function coverageRecipient() external view returns (address);

    /// @notice Returns the address of the withdrawal recipient contract.
    /// @return The address of the withdrawal recipient contract.
    function withdrawalRecipient() external view returns (address);

    /// @notice Returns the address of the oracle aggregator contract.
    /// @return The address of the oracle aggregator contract.
    function oracleAggregator() external view returns (address);

    /// @notice Returns the address of the exit queue contract
    /// @return The address of the exit queue contract
    function exitQueue() external view returns (address);

    /// @notice Returns the current validator global extra data
    /// @return The validator global extra data value
    function validatorGlobalExtraData() external view returns (string memory);

    /// @notice Returns whether the given address is a depositor.
    /// @param depositorAddress The address to check.
    /// @return Whether the given address is a depositor.
    function depositors(address depositorAddress) external view returns (bool);

    /// @notice Returns the total supply of tokens.
    /// @return The total supply of tokens.
    function totalSupply() external view returns (uint256);

    /// @notice Returns the name of the vPool
    /// @return The name of the vPool
    function name() external view returns (string memory);

    /// @notice Returns the symbol of the vPool
    /// @return The symbol of the vPool
    function symbol() external view returns (string memory);

    /// @notice Returns the decimals of the vPool shares
    /// @return The decimal count
    function decimals() external pure returns (uint8);

    /// @notice Returns the total underlying supply of tokens.
    /// @return The total underlying supply of tokens.
    function totalUnderlyingSupply() external view returns (uint256);

    /// @notice Returns the current ETH/SHARES rate based on the total underlying supply and total supply.
    /// @return The current rate
    function rate() external view returns (uint256);

    /// @notice Returns the current requested exit count
    /// @return The current requested exit count
    function requestedExits() external view returns (uint32);

    /// @notice Returns the balance of the given account.
    /// @param account The address of the account to check.
    /// @return The balance of the given account.
    function balanceOf(address account) external view returns (uint256);

    /// @notice Returns the allowance of the given spender for the given owner.
    /// @param owner The owner of the allowance.
    /// @param spender The spender of the allowance.
    /// @return The allowance of the given spender for the given owner.
    function allowance(address owner, address spender) external view returns (uint256);

    /// @notice Returns the details about the held ethers
    /// @return The structure of ethers inside the contract
    function ethers() external view returns (ctypes.Ethers memory);

    /// @notice Returns an array of the IDs of purchased validators.
    /// @return An array of the IDs of purchased validators.
    function purchasedValidators() external view returns (uint256[] memory);

    /// @notice Returns the ID of the purchased validator at the given index.
    /// @param idx The index of the validator.
    /// @return The ID of the purchased validator at the given index.
    function purchasedValidatorAtIndex(uint256 idx) external view returns (uint256);

    /// @notice Returns the total number of purchased validators.
    /// @return The total number of purchased validators.
    function purchasedValidatorCount() external view returns (uint256);

    /// @notice Returns the last epoch.
    /// @return The last epoch.
    function lastEpoch() external view returns (uint256);

    /// @notice Returns the last validator report that was processed
    /// @return The last report structure.
    function lastReport() external view returns (ctypes.ValidatorsReport memory);

    /// @notice Returns the total amount in ETH covered by the contract.
    /// @return The total amount in ETH covered by the contract.
    function totalCovered() external view returns (uint256);

    /// @notice Returns the number of epochs per frame.
    /// @return  The number of epochs per frame.
    function epochsPerFrame() external view returns (uint256);

    /// @notice Returns the consensus layer spec.
    /// @return The consensus layer spec.
    function consensusLayerSpec() external pure returns (ctypes.ConsensusLayerSpec memory);

    /// @notice Returns the report bounds.
    /// @return maxAPRUpperBound The maximum APR for the upper bound.
    /// @return maxAPRUpperCoverageBoost The maximum APR for the upper bound with coverage boost.
    /// @return maxRelativeLowerBound The maximum relative lower bound.
    function reportBounds()
        external
        view
        returns (uint64 maxAPRUpperBound, uint64 maxAPRUpperCoverageBoost, uint64 maxRelativeLowerBound);

    /// @notice Returns the operator fee.
    /// @return  The operator fee.
    function operatorFee() external view returns (uint256);

    /// @notice Returns whether the given epoch is valid.
    /// @param epoch The epoch to check.
    /// @return Whether the given epoch is valid.
    function isValidEpoch(uint256 epoch) external view returns (bool);

    /// @notice Reverts if given epoch is invalid, with an explicit custom error based on the issue
    /// @param epoch The epoch to check.
    function onlyValidEpoch(uint256 epoch) external view;

    /// @notice Allows or disallows the given depositor to deposit.
    /// @param depositorAddress The address of the depositor.
    /// @param allowed Whether the depositor is allowed to deposit.
    function allowDepositor(address depositorAddress, bool allowed) external;

    /// @notice Transfers the given amount of shares to the given address.
    /// @param to The address to transfer the shares to.
    /// @param amount The amount of shares to transfer.
    /// @param data Additional data for the transfer.
    /// @return Whether the transfer was successful.
    function transferShares(address to, uint256 amount, bytes calldata data) external returns (bool);

    /// @notice Increases the allowance for the given spender by the given amount.
    /// @param spender The spender to increase the allowance for.
    /// @param amount The amount to increase the allowance by.
    /// @return Whether the increase was successful.
    function increaseAllowance(address spender, uint256 amount) external returns (bool);

    /// @notice Decreases the allowance of a spender by the given amount.
    /// @param spender The address of the spender.
    /// @param amount The amount to decrease the allowance by.
    /// @return Whether the allowance was successfully decreased.
    function decreaseAllowance(address spender, uint256 amount) external returns (bool);

    /// @notice Voids the allowance of a spender.
    /// @param spender The address of the spender.
    /// @return Whether the allowance was successfully voided.
    function voidAllowance(address spender) external returns (bool);

    /// @notice Transfers shares from one account to another.
    /// @param from The address of the account to transfer shares from.
    /// @param to The address of the account to transfer shares to.
    /// @param amount The amount of shares to transfer.
    /// @param data Optional data to include with the transaction.
    /// @return  Whether the transfer was successful.
    function transferSharesFrom(address from, address to, uint256 amount, bytes calldata data) external returns (bool);

    /// @notice Deposits ether into the contract.
    /// @return  The number of shares minted on deposit
    function deposit() external payable returns (uint256);

    /// @notice Purchases the maximum number of validators allowed.
    /// @param max The maximum number of validators to purchase.
    function purchaseValidators(uint256 max) external;

    /// @notice Sets the operator fee.
    /// @param operatorFeeBps The new operator fee, in basis points.
    function setOperatorFee(uint256 operatorFeeBps) external;

    /// @notice Sets the number of epochs per frame.
    /// @param newEpochsPerFrame The new number of epochs per frame.
    function setEpochsPerFrame(uint256 newEpochsPerFrame) external;

    /// @notice Sets the consensus layer spec.
    /// @param consensusLayerSpec_ The new consensus layer spec.
    function setConsensusLayerSpec(ctypes.ConsensusLayerSpec calldata consensusLayerSpec_) external;

    /// @notice Sets the global validator extra data
    /// @param extraData The new extra data to use
    function setValidatorGlobalExtraData(string calldata extraData) external;

    /// @notice Sets the bounds for reporting.
    /// @param maxAPRUpperBound The maximum APR for the upper bound.
    /// @param maxAPRUpperCoverageBoost The maximum APR for the upper coverage boost.
    /// @param maxRelativeLowerBound The maximum relative value for the lower bound.
    function setReportBounds(uint64 maxAPRUpperBound, uint64 maxAPRUpperCoverageBoost, uint64 maxRelativeLowerBound) external;

    /// @notice Injects ether into the contract.
    function injectEther() external payable;

    /// @notice Voids the given amount of shares.
    /// @param amount The amount of shares to void.
    function voidShares(uint256 amount) external;

    /// @notice Reports the validator data for the given epoch.
    /// @param rprt The consensus layer report to process
    function report(ctypes.ValidatorsReport calldata rprt) external;
}

// SPDX-License-Identifier: MIT
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity 0.8.17;

import "utils.sol/interfaces/IAdministrable.sol";
import "utils.sol/interfaces/IDepositor.sol";
import "utils.sol/interfaces/IFixable.sol";

/// @title Factory Interface
/// @author mortimr @ Kiln
/// @notice The vFactory contract is in charge of depositing validators to the consensus layer
interface IvFactory is IAdministrable, IDepositor, IFixable {
    /// @notice The provided array is empty
    error EmptyArray();

    /// @notice The provided arrays do not have matching lengths
    error InvalidArrayLengths();

    /// @notice The withdrawal attempt was made on a validator that collected no funds
    error EmptyWithdrawalRecipient();

    /// @notice The provided key concatenation is empty
    /// @param index The index of the invalid key concatenation in the calldata parameters
    error EmptyKeyPayload(uint256 index);

    /// @notice The provided validator id is invalid
    /// @param id The invalid id
    error InvalidValidatorId(uint256 id);

    /// @notice The provided key concatenation is invalid
    /// @param index The index of the invalid key concatenation in the calldata parameters
    error InvalidKeyPayload(uint256 index);

    /// @notice The provided indexes array if empty
    /// @param index The index of the invalid index array in the calldata parameters
    error EmptyIndexesArray(uint256 index);

    /// @notice The provided indexes array is unsorted
    /// @param index The index of the invalid index array in the calldata parameters
    error UnsortedIndexArray(uint256 index);

    /// @notice The withdrawal call performed on the minimal recipient reverted
    /// @param rdata The resulting error return data
    error MinimalRecipientExecutionError(bytes rdata);

    /// @notice The provided withdrawal channel is invalid
    /// @param withdrawalChannel The invalid withdrawal channel
    error InvalidWithdrawalChannel(bytes32 withdrawalChannel);

    /// @notice The provided message value in ether is invalid
    /// @param received The provided amount
    /// @param expected The expected amount
    error InvalidMessageValue(uint256 received, uint256 expected);

    /// @notice The requested validator count is too high
    /// @param requested The count of validators requested
    /// @param available The count of available validators
    error NotEnoughValidators(uint256 requested, uint256 available);

    /// @notice The provided validator index is out of bounds
    /// @param index The indexes array index in the calldata
    /// @param validatorIndex The invalid validator index
    error ValidatorIndexOutOfBounds(uint256 index, uint256 validatorIndex);

    /// @notice A funded validator removal was attempted
    /// @param index The indexes array index in the calldata
    /// @param validatorIndex The funded validator index
    error FundedValidatorRemovalAttempt(uint256 index, uint256 validatorIndex);

    /// @notice Error raised when the requested total exits on a custom channel is higher than the total funded count
    /// @param withdrawalChannel The withdrawal channel
    /// @param requestedTotal The total requested exits
    /// @param maxFundedCount The count of funded validators on the channel
    error ExitTotalTooHigh(bytes32 withdrawalChannel, uint32 requestedTotal, uint32 maxFundedCount);

    /// @notice Error raised when the requested limit on a withdrawal channel is higher than the validators count.
    /// @param withdrawalChannel The withdrawal channel
    /// @param limit The limit requested
    /// @param validatorCount The count of validators on the channel
    error LimitExceededValidatorCount(bytes32 withdrawalChannel, uint256 limit, uint256 validatorCount);

    /// @notice Emitted when the minimal recipient implementation is set
    /// @param minimalRecipientImplementation The address of the implementation
    event SetMinimalRecipientImplementation(address minimalRecipientImplementation);

    /// @notice Emitted when hatcher registry is set
    /// @param hatcherRegistry The address of the hatcher registry
    event SetHatcherRegistry(address hatcherRegistry);

    /// @notice Emitted when the operator changed
    /// @param operator The new operator address
    event ChangedOperator(address operator);

    /// @notice Emitted when the treasury changed
    /// @param treasury The new treasury address
    event ChangedTreasury(address treasury);

    /// @notice Emitted when an exit request was made
    /// @param withdrawalChannel The withdrawal channel that received the exit request
    /// @param publicKey The public key of the validator that requested the exit
    /// @param id The id of the validator that requested the exit
    event ExitValidator(bytes32 indexed withdrawalChannel, bytes publicKey, uint256 id);

    /// @notice Emitted when the owner of a validator is changed
    /// @param id The id of the validator
    /// @param owner The new owner address
    event SetValidatorOwner(uint256 indexed id, address owner);

    /// @notice Emitted when the metadata of the vFactory is changed
    /// @param name The operator name
    /// @param url The operator shared url
    /// @param iconUrl The operator icon
    event SetMetadata(string name, string url, string iconUrl);

    /// @notice Emitted when a depositor authorization changed
    /// @param depositor The address of the depositor
    /// @param wc The withdrawal channel
    /// @param allowed True if allowed to deposit
    event ApproveDepositor(address indexed depositor, bytes32 indexed wc, bool allowed);

    /// @notice Emitted when new keys are added to a withdrawal channel
    /// @param withdrawalChannel The withdrawal channel that received new keys
    /// @param keys The keys that were added
    event AddedValidators(bytes32 indexed withdrawalChannel, bytes keys);

    /// @notice Emitted when the staking limit has been changed for a withdrawal channel
    /// @param withdrawalChannel The withdrawal channel that had its limit updated
    /// @param limit The new staking limit of the withdrawal channel
    event UpdatedLimit(bytes32 indexed withdrawalChannel, uint256 limit);

    /// @notice Emitted when funds have been withdrawn from a validator withdrawal recipient
    /// @param id The id of the validator
    /// @param recipient The address receiving the funds
    /// @param value The value that was withdrawn
    event Withdraw(uint256 indexed id, address recipient, uint256 value);

    /// @notice Emitted when a validator extra data is changed
    /// @param id The id of the validator
    /// @param extraData The new extra data value
    event SetValidatorExtraData(uint256 indexed id, string extraData);

    /// @notice Emitted when a validator fee recipient is changed
    /// @param id The id of the validator
    /// @param feeRecipient The new fee recipient address
    event SetValidatorFeeRecipient(uint256 indexed id, address feeRecipient);

    /// @notice Emitted when keys are requested on a withdrawal channel
    /// @param withdrawalChannel The withdrawal channel where keys have been requested
    /// @param total The expect total key count of the channel
    event ValidatorRequest(bytes32 indexed withdrawalChannel, uint256 total);

    /// @notice Emitted when a channel exit request is above the funded count
    /// @param funded The count of funded validators on the channel
    /// @param requestedTotal The total requested exits
    event ExitRequestAboveFunded(uint32 funded, uint32 requestedTotal);

    /// @notice Emitted when a validator key has been removed from a withdrawal channel
    /// @param withdrawalChannel The withdrawal channel where the key has been removed
    /// @param publicKey The public key that has been removed
    /// @param validatorIndex The index of the removed validator key
    event RemovedValidator(bytes32 indexed withdrawalChannel, bytes publicKey, uint256 validatorIndex);

    /// @notice Emitted when a validator key is funded
    /// @param withdrawalChannel The withdrawal channel where the validator got funded
    /// @param depositor The address of the depositor bringing the funds for the validator
    /// @param withdrawalAddress The address of the withdrawal recipient
    /// @param publicKey The BLS Public key of the funded validator
    /// @param id The unique id of the validator
    /// @param validatorIndex The index of the funded validator in the withdrawal channel
    event FundedValidator(
        bytes32 indexed withdrawalChannel,
        address indexed depositor,
        address indexed withdrawalAddress,
        bytes publicKey,
        uint256 id,
        uint256 validatorIndex
    );

    /// @notice Emitted when the total exit for a custom withdrawal channel is changed
    /// @param withdrawalChannel The withdrawal channel where the exit count is changed
    /// @param totalExited The new total exited value
    event SetExitTotal(bytes32 indexed withdrawalChannel, uint32 totalExited);

    /// @notice Emitted when the last edit is after the snapshot (when editing the limit). The snapshot limit is staled.
    /// @param withdrawalChannel The withdrawal channel
    /// @param limit The limit requested
    event LastEditAfterSnapshot(bytes32 indexed withdrawalChannel, uint256 limit);

    /// @notice Initializes the vFactory
    /// @dev Can only be called once
    /// @param depositContract Address of the deposit contract to use
    /// @param admin Address of the contract admin
    /// @param operator_ Address of the contract operator
    /// @param treasury_ Address of the treasury
    /// @param minimalRecipientImplementation Address used by the clones as implementation for the withdrawal recipients
    /// @param hatcherRegistry Contract holding the hatcher registry
    function initialize(
        string memory name,
        address depositContract,
        address admin,
        address operator_,
        address treasury_,
        address minimalRecipientImplementation,
        address hatcherRegistry
    ) external;

    /// @notice Retrieve the current operator address
    /// @return The operator address
    function operator() external view returns (address);

    /// @notice Retrieve the current treasury address
    /// @return The treasury address
    function treasury() external view returns (address);

    /// @notice Retrieve the depositor status
    /// @param depositor Address to verify
    /// @param wc Withdrawal channel to verify
    /// @return Status of the depositor
    function depositors(address depositor, bytes32 wc) external view returns (bool);

    /// @notice Retrieve the details of a validator by its unique id
    /// @param id ID of the validator
    /// @return found True if the ID matches a validator
    /// @return funded True if the validator is funded
    /// @return wc The withdrawal channel of the validator
    /// @return index The index of the validator in the withdrawal channel
    /// @return publicKey The BLS public key of the validator
    /// @return signature The BLS signature of the validator
    /// @return owner The address owning the validator
    /// @return withdrawalRecipient The address where the withdrawal rewards will go to
    /// @return feeRecipient The address where the execution layer fees are expected to go to
    function validator(uint256 id)
        external
        view
        returns (
            bool found,
            bool funded,
            bytes32 wc,
            uint256 index,
            bytes memory publicKey,
            bytes memory signature,
            address owner,
            address withdrawalRecipient,
            address feeRecipient
        );

    /// @notice Retrieve the details of a validator by its unique id
    /// @param ids IDs of the validators
    /// @return  Public keys of the provided IDs
    function publicKeys(uint256[] calldata ids) external view returns (bytes[] memory);

    /// @notice Retrieve the details of a key in a withdrawalChannel
    /// @param wc The withdrawal channel the key is stored in
    /// @param index The index of the key in the withdrawal channel
    /// @return found True if there's a key at the given index in the withdrawal channel
    /// @return publicKey The BLS public key of the validator
    /// @return signature The BLS signature of the validator
    /// @return withdrawalRecipient The address where the withdrawal rewards will go to
    function key(bytes32 wc, uint256 index)
        external
        view
        returns (bool found, bytes memory publicKey, bytes memory signature, address withdrawalRecipient);

    /// @notice Retrieve the number of validators owned by an account in a specific withdrawal channel
    /// @param wc The withdrawal channel to inspect
    /// @param owner The account owning the validators
    /// @return The number of owned validators in the withdrawal channel
    function balance(bytes32 wc, address owner) external view returns (uint256);

    /// @notice Retrieve the key details of the withdrawal channel
    /// @param wc The withdrawal channel to inspect
    /// @return total The total count of deposited keys
    /// @return limit The staking limit of the channel
    /// @return funded The count of funded validators
    function withdrawalChannel(bytes32 wc) external view returns (uint32 total, uint32 limit, uint32 funded);

    /// @notice Retrieve the operator public metadata
    /// @return name The operator name. Cannot be empty.
    /// @return url The operator shared url. Can be empty.
    /// @return iconUrl The operator icon url
    function metadata() external view returns (string memory name, string memory url, string memory iconUrl);

    /// @notice Retrieve the withdrawal address for the specified public key
    /// @dev This is only useful on the null withdrawal channel where the vFactory spawns
    ///      minimal clones deterministically as the withdrawal recipients of each validator.
    /// @param publicKey The BLS Public Key of the validator
    /// @return The address where the minimal clone will be deployed to retrieve the consensus layer rewards
    function withdrawalAddress(bytes calldata publicKey) external view returns (address);

    /// @notice Retrieve the count of fundable validators on a withdrawal channel
    /// @param wc The withdrawal channel to inspect
    /// @return The count of fundable validators
    function availableValidators(bytes32 wc) external view returns (uint256);

    /// @notice Changes the operator address
    /// @dev Only callable by the admin
    /// @param newOperator New operator address
    function setOperator(address newOperator) external;

    /// @notice Changes the operator public metadata
    /// @param name The operator name. Cannot be empty.
    /// @param url The operator shared url. Can be empty.
    /// @param iconUrl The operator icon url
    function setMetadata(string calldata name, string calldata url, string calldata iconUrl) external;

    /// @notice Add or remove depositor
    /// @dev Callable by the admin of the factory or the nexus
    /// @param depositor The address to add or remove
    /// @param wc The withdrawal channel to add or remove the depositor from
    /// @param allowed True to allow as depositor
    function allowDepositor(address depositor, bytes32 wc, bool allowed) external;

    /// @notice Emits an event signaling a request in keys on a specific withdrawal channel
    /// @param wc The withdrawal channel to perform the request on
    /// @param amount The amount of keys that should be added to the channel
    function request(bytes32 wc, uint256 amount) external;

    /// @notice Adds keys to several withdrawal channels
    /// @dev It's expected that the provided withdrawalChannels and _keys have the same length.
    ///      For each withdrawalChannel, a concatenation of [S1,P1,S2,P2...,SN,PN] is expected.
    ///      S = BLS Signature and P = BLS Public Key. Signature should come first in each pair.
    /// @param withdrawalChannels The list of withdrawal channels to add keys on
    /// @param keys The list of key concatenations to add to the withdrawal channels
    function addValidators(bytes32[] calldata withdrawalChannels, bytes[] calldata keys) external;

    /// @notice Removes keys from several withdrawal channels
    /// @dev It's expected that the provided withdrawalChannels and _indexes have the same length.
    ///      For each withdrawalChannel, an array of indexes is expected. These indexes should be sorted in descending order.
    ///      Each array should not contain any duplicate index.
    /// @param withdrawalChannels The list of withdrawal channels to add keys on
    /// @param indexes The list of lists of indexes to remove from the withdrawal channels
    function removeValidators(bytes32[] calldata withdrawalChannels, uint256[][] calldata indexes) external;

    /// @notice Modifies the staking limits of several withdrawal channels
    /// @dev It's expected that the provided withdrawalChannels, _limits and _snapshots have the same length
    ///      For each withdrawalChannel, a new limit is provided alongside a snapshot block number.
    ///      If the new limit value decreases the current one, no extra check if performed and the limit is decreased.
    ///      If the new limit value increases the current one, we check that no key modifictions have been done after
    ///      the provided snapshot block. If it's the case, we don't update the limit and we don't revert, we simply
    ///      emit an event alerting that the last key edition happened after the snapshot. Otherwise the limit is increased.
    /// @param withdrawalChannels The list of withdrawal channels to update the limits
    /// @param limits The list of new staking limits values
    /// @param snapshots The list of block snapshots to respect if the limit is increased
    function approve(bytes32[] calldata withdrawalChannels, uint256[] calldata limits, uint256[] calldata snapshots) external;

    /// @notice Deposits _count validators on the provided withdrawal channel
    /// @dev This call reverts if the count of available keys is too low on the withdrawal channel
    /// @param wc The withdrawal channel to fund keys on
    /// @param count The amount of keys to fund
    /// @param feeRecipient The fee recipient to set all the funded keys on
    /// @param owner The address owning the validators
    /// @param extradata The extra data to transmit to the node operator
    /// @return An array of unique IDs identifying the funded validators
    function deposit(bytes32 wc, uint256 count, address feeRecipient, address owner, string calldata extradata)
        external
        payable
        returns (uint256[] memory);

    /// @notice Changes the fee recipient of several validators
    /// @dev Only callable by the owner of the validators
    /// @param ids The list of validator IDs
    /// @param newFeeRecipient The new fee recipient address
    function setFeeRecipient(uint256[] calldata ids, address newFeeRecipient) external;

    /// @notice Changes the owner of several validators
    /// @dev Only callable by the owner of the validators
    /// @param ids The list of validator IDs
    /// @param newOwner The new owner address
    function setOwner(uint256[] calldata ids, address newOwner) external;

    /// @notice Changes the extradata of several validators
    /// @dev Only callable by the owner of the validators
    /// @param ids The list of validator IDs
    /// @param newExtradata The new validator extra data
    function setExtraData(uint256[] calldata ids, string calldata newExtradata) external;

    /// @notice Emits an exit request event for several validators
    /// @dev Only callable by the owner of the validators
    /// @param ids The list of validator IDs
    function exit(uint256[] calldata ids) external;

    /// @notice Perform a consensus layer withdrawal on several validators
    /// @dev Only callable by the owner of the validators and on funded validators from the null withdrawal channel
    /// @param ids The list of validator IDs
    /// @param recipient The address that should receive the funds, that implements the WithdrawRecipientLike interface
    function withdraw(uint256[] calldata ids, address recipient) external;

    /// @notice Requests a new total exited validator count for the withdrawal recipient calling the method
    /// @dev This endpoint is callable by any address, it's up to the operator to properly filter the calls
    ///      based on existing withdrawal channels only.
    /// @param totalExited The new total exited validator count for the withdrawal channel
    /// @return The new total exited validator count for the withdrawal channel
    function exitTotal(uint32 totalExited) external returns (uint32);
}

// SPDX-License-Identifier: MIT
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity >=0.8.17;

/// @title Fixable Interface
/// @author mortimr @ Kiln
/// @dev Unstructured Storage Friendly
/// @notice The Fixable contract can be used on cubs to expose a safe noop to force a fix.
interface IFixable {
    /// @notice Noop method to force a global fix to be applied.
    function fix() external;
}

// 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: BUSL-1.1
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity >=0.8.17;

import "./types.sol";

/// @notice Library Address - Address slot utilities.
library LAddress {
    // slither-disable-next-line dead-code, assembly
    function get(types.Address position) internal view returns (address data) {
        // slither-disable-next-line assembly
        assembly {
            data := sload(position)
        }
    }

    // slither-disable-next-line dead-code
    function set(types.Address position, address data) internal {
        // slither-disable-next-line assembly
        assembly {
            sstore(position, data)
        }
    }

    // slither-disable-next-line dead-code
    function del(types.Address position) internal {
        // slither-disable-next-line assembly
        assembly {
            sstore(position, 0)
        }
    }
}

library CAddress {
    // slither-disable-next-line dead-code
    function toUint256(address val) internal pure returns (uint256) {
        return uint256(uint160(val));
    }

    // slither-disable-next-line dead-code
    function toBytes32(address val) internal pure returns (bytes32) {
        return bytes32(uint256(uint160(val)));
    }

    // slither-disable-next-line dead-code
    function toBool(address val) internal pure returns (bool converted) {
        // slither-disable-next-line assembly
        assembly {
            converted := gt(val, 0)
        }
    }

    /// @notice This method should be used to convert an address to a uint256 when used as a key in a mapping.
    // slither-disable-next-line dead-code
    function k(address val) internal pure returns (uint256) {
        return toUint256(val);
    }

    /// @notice This method should be used to convert an address to a uint256 when used as a value in a mapping.
    // slither-disable-next-line dead-code
    function v(address val) internal pure returns (uint256) {
        return toUint256(val);
    }
}

// SPDX-License-Identifier: BUSL-1.1
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity >=0.8.17;

import "./types.sol";

library LString {
    struct StringStorage {
        string value;
    }

    // slither-disable-next-line dead-code
    function get(types.String position) internal view returns (string memory) {
        StringStorage storage ss;

        // slither-disable-next-line assembly
        assembly {
            ss.slot := position
        }

        return ss.value;
    }

    // slither-disable-next-line dead-code
    function set(types.String position, string memory value) internal {
        StringStorage storage ss;

        // slither-disable-next-line assembly
        assembly {
            ss.slot := position
        }

        ss.value = value;
    }
}

// SPDX-License-Identifier: BUSL-1.1
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity >=0.8.17;

import "./types.sol";

library LMapping {
    // slither-disable-next-line dead-code
    function get(types.Mapping position) internal pure returns (mapping(uint256 => uint256) storage data) {
        // slither-disable-next-line assembly
        assembly {
            data.slot := position
        }
    }
}

// SPDX-License-Identifier: BUSL-1.1
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity >=0.8.17;

import "./LibErrors.sol";
import "./LibConstant.sol";

/// @title Lib Sanitize
/// @dev This library helps sanitizing inputs.
library LibSanitize {
    /// @dev Internal utility to sanitize an address and ensure its value is not 0.
    /// @param addressValue The address to verify
    // slither-disable-next-line dead-code
    function notZeroAddress(address addressValue) internal pure {
        if (addressValue == address(0)) {
            revert LibErrors.InvalidZeroAddress();
        }
    }

    /// @dev Internal utility to sanitize an uint256 value and ensure its value is not 0.
    /// @param value The value to verify
    // slither-disable-next-line dead-code
    function notNullValue(uint256 value) internal pure {
        if (value == 0) {
            revert LibErrors.InvalidNullValue();
        }
    }

    /// @dev Internal utility to sanitize a bps value and ensure it's <= 100%.
    /// @param value The bps value to verify
    // slither-disable-next-line dead-code
    function notInvalidBps(uint256 value) internal pure {
        if (value > LibConstant.BASIS_POINTS_MAX) {
            revert LibErrors.InvalidBPSValue();
        }
    }

    /// @dev Internal utility to sanitize a string value and ensure it's not empty.
    /// @param stringValue The string value to verify
    // slither-disable-next-line dead-code
    function notEmptyString(string memory stringValue) internal pure {
        if (bytes(stringValue).length == 0) {
            revert LibErrors.InvalidEmptyString();
        }
    }
}

// SPDX-License-Identifier: BUSL-1.1
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity >=0.8.17;

import "./types/uint256.sol";

/// @title Initializable
/// @author mortimr @ Kiln
/// @dev Unstructured Storage Friendly
/// @notice This contracts helps upgradeable contracts handle an internal
///         version value to prevent initializer replays.
abstract contract Initializable {
    using LUint256 for types.Uint256;

    /// @notice The version has been initialized.
    /// @param version The version number initialized
    /// @param cdata The calldata used for the call
    event Initialized(uint256 version, bytes cdata);

    /// @notice The init modifier has already been called on the given version number.
    /// @param version The provided version number
    /// @param currentVersion The stored version number
    error AlreadyInitialized(uint256 version, uint256 currentVersion);

    /// @dev The version number in storage.
    /// @dev Slot: keccak256(bytes("initializable.version"))) - 1
    types.Uint256 internal constant $version =
        types.Uint256.wrap(0xc4c7f1ccb588f39a9aa57be6cfd798d73912e27b44cfa18e1a5eba7b34e81a76);

    /// @dev The modifier to use on initializers.
    /// @dev Do not provide _version dynamically, make sure the value is hard-coded each
    ///      time the modifier is used.
    /// @param _version The version to initialize
    // slither-disable-next-line incorrect-modifier
    modifier init(uint256 _version) {
        if (_version == $version.get()) {
            $version.set(_version + 1);
            emit Initialized(_version, msg.data);
            _;
        } else {
            revert AlreadyInitialized(_version, $version.get());
        }
    }
}

// SPDX-License-Identifier: UNLICENSED
pragma solidity 0.8.17;

import "openzeppelin-contracts/token/ERC721/extensions/IERC721Metadata.sol";

/// @title NFT
/// @author mortimr @ Kiln
/// @notice NFT contract using utils.sol storage format.
interface INFT is IERC721Metadata {
    /// @notice Emitted when name is changed.
    /// @param name The new ERC721 contract name
    event SetName(string name);

    /// @notice Emitted when symbol is changed.
    /// @param symbol The new ERC721 contract symbol
    event SetSymbol(string symbol);

    /// @notice Thrown when the token is already minted when it shouldn't.
    /// @param tokenId The id of the already existing token
    error TokenAlreadyMinted(uint256 tokenId);

    /// @notice Thrown when a mint operation to address zero is attempted.
    error IllegalMintToZero();

    /// @notice Thrown when a transfer operation to address zero is attempted.
    error IllegalTransferToZero();

    /// @notice Thrown when approval to self is made.
    /// @param owner Address attempting approval to self
    error ApprovalToOwner(address owner);

    /// @notice Thrown when provided token id is invalid.
    /// @param tokenId The invalid token id
    error InvalidTokenId(uint256 tokenId);

    /// @notice Thrown when the receiving contract is not able to receive the token.
    /// @param from The address sending the token
    /// @param to The address (contract) receiving the token and failing to properly receive it
    /// @param tokenId The token id
    /// @param data The extra data provided to the call
    error NonERC721ReceiverTransfer(address from, address to, uint256 tokenId, bytes data);

    /// @notice Throw when an nft transfer was attempted while the nft is frozen.
    ///         NFTs get frozen for ever once the exit request is made.
    ///         NFTs get frozen for 6 hours when a withdrawal is made.
    /// @param tokenId The frozen token id
    /// @param currentTimestamp The timestamp where the transfer was attempted
    /// @param freezeTimestamp The timestamp until which the token is frozen
    error IllegalTransferWhileFrozen(uint256 tokenId, uint256 currentTimestamp, uint256 freezeTimestamp);

    /// @notice Retrieve the total count of validator created with this contract.
    /// @return The total count of NFT validators of this contract
    function totalSupply() external view returns (uint256);
}

//SPDX-License-Identifier: UNLICENSED
pragma solidity 0.8.17;

import "./uctypes.sol";

/// @title Operator Approvals Custom Type
library LOperatorApprovalsMapping {
    function get(uctypes.OperatorApprovalsMapping position)
        internal
        pure
        returns (mapping(address => mapping(address => bool)) storage data)
    {
        // slither-disable-next-line assembly
        assembly {
            data.slot := position
        }
    }
}

// SPDX-License-Identifier: BUSL-1.1
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity >=0.8.17;

import "./types.sol";

library LUint256 {
    // slither-disable-next-line dead-code
    function get(types.Uint256 position) internal view returns (uint256 data) {
        // slither-disable-next-line assembly
        assembly {
            data := sload(position)
        }
    }

    // slither-disable-next-line dead-code
    function set(types.Uint256 position, uint256 data) internal {
        // slither-disable-next-line assembly
        assembly {
            sstore(position, data)
        }
    }

    // slither-disable-next-line dead-code
    function del(types.Uint256 position) internal {
        // slither-disable-next-line assembly
        assembly {
            sstore(position, 0)
        }
    }
}

library CUint256 {
    // slither-disable-next-line dead-code
    function toBytes32(uint256 val) internal pure returns (bytes32) {
        return bytes32(val);
    }

    // slither-disable-next-line dead-code
    function toAddress(uint256 val) internal pure returns (address) {
        return address(uint160(val));
    }

    // slither-disable-next-line dead-code
    function toBool(uint256 val) internal pure returns (bool) {
        return (val & 1) == 1;
    }
}

// SPDX-License-Identifier: BUSL-1.1
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity >=0.8.17;

/// @dev Library holding bytes32 custom types
// slither-disable-next-line naming-convention
library types {
    type Uint256 is bytes32;
    type Address is bytes32;
    type Bytes32 is bytes32;
    type Bool is bytes32;
    type String is bytes32;
    type Mapping is bytes32;
    type Array is bytes32;
}

// SPDX-License-Identifier: BUSL-1.1
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity >=0.8.17;

import "prb-math/PRBMath.sol";

library LibUint256 {
    // slither-disable-next-line dead-code
    function min(uint256 x, uint256 y) internal pure returns (uint256 z) {
        /// @solidity memory-safe-assembly
        // slither-disable-next-line assembly
        assembly {
            z := xor(x, mul(xor(x, y), lt(y, x)))
        }
    }

    /// @custom:author Vectorized/solady#58681e79de23082fd3881a76022e0842f5c08db8
    // slither-disable-next-line dead-code
    function max(uint256 x, uint256 y) internal pure returns (uint256 z) {
        /// @solidity memory-safe-assembly
        // slither-disable-next-line assembly
        assembly {
            z := xor(x, mul(xor(x, y), gt(y, x)))
        }
    }

    // slither-disable-next-line dead-code
    function mulDiv(uint256 a, uint256 b, uint256 c) internal pure returns (uint256) {
        return PRBMath.mulDiv(a, b, c);
    }

    // slither-disable-next-line dead-code
    function ceil(uint256 num, uint256 den) internal pure returns (uint256) {
        return (num / den) + (num % den > 0 ? 1 : 0);
    }
}

// SPDX-License-Identifier: BUSL-1.1
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity >=0.8.17;

/// @title Lib Bytes
/// @dev This library helps manipulating bytes.
library LibBytes {
    /// @dev The length overflows an uint.
    error SliceOverflow();

    /// @dev The slice is outside of the initial bytes bounds.
    error SliceOutOfBounds();

    /// @dev Slices the provided bytes.
    /// @param bytes_ Bytes to slice
    /// @param start The starting index of the slice
    /// @param length The length of the slice
    /// @return The slice of _bytes starting at _start of length _length
    // slither-disable-next-line dead-code
    function slice(bytes memory bytes_, uint256 start, uint256 length) internal pure returns (bytes memory) {
        unchecked {
            if (length + 31 < length) {
                revert SliceOverflow();
            }
        }
        if (bytes_.length < start + length) {
            revert SliceOutOfBounds();
        }

        bytes memory tempBytes;

        // slither-disable-next-line assembly
        assembly {
            switch iszero(length)
            case 0 {
                // Get a location of some free memory and store it in tempBytes as
                // Solidity does for memory variables.
                tempBytes := mload(0x40)

                // The first word of the slice result is potentially a partial
                // word read from the original array. To read it, we calculate
                // the length of that partial word and start copying that many
                // bytes into the array. The first word we copy will start with
                // data we don't care about, but the last `lengthmod` bytes will
                // land at the beginning of the contents of the new array. When
                // we're done copying, we overwrite the full first word with
                // the actual length of the slice.
                let lengthmod := and(length, 31)

                // The multiplication in the next line is necessary
                // because when slicing multiples of 32 bytes (lengthmod == 0)
                // the following copy loop was copying the origin's length
                // and then ending prematurely not copying everything it should.
                let mc := add(add(tempBytes, lengthmod), mul(0x20, iszero(lengthmod)))
                let end := add(mc, length)

                for {
                    // The multiplication in the next line has the same exact purpose
                    // as the one above.
                    let cc := add(add(add(bytes_, lengthmod), mul(0x20, iszero(lengthmod))), start)
                } lt(mc, end) {
                    mc := add(mc, 0x20)
                    cc := add(cc, 0x20)
                } { mstore(mc, mload(cc)) }

                mstore(tempBytes, length)

                //update free-memory pointer
                //allocating the array padded to 32 bytes like the compiler does now
                mstore(0x40, and(add(mc, 31), not(31)))
            }
            //if we want a zero-length slice let's just return a zero-length array
            default {
                tempBytes := mload(0x40)
                //zero out the 32 bytes slice we are about to return
                //we need to do it because Solidity does not garbage collect
                mstore(tempBytes, 0)

                mstore(0x40, add(tempBytes, 0x20))
            }
        }

        return tempBytes;
    }
}

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

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: BUSL-1.1
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity 0.8.17;

import "utils.sol/libs/LibPublicKey.sol";
import "utils.sol/libs/LibSignature.sol";

/// @title Custom Types
// slither-disable-next-line naming-convention
library ctypes {
    /// @notice Structure representing a validator in the factory
    /// @param publicKey The public key of the validator
    /// @param signature The signature used for the deposit
    /// @param feeRecipient The address receiving the exec layer fees
    struct Validator {
        LibPublicKey.PublicKey publicKey;
        LibSignature.Signature signature;
        address feeRecipient;
    }

    /// @notice Structure representing a withdrawal channel in the factory
    /// @param validators The validators in the channel
    /// @param lastEdit The last time the channel was edited (in blocks)
    /// @param limit The staking limit of the channel. Always <= validators.length
    /// @param funded The amount of funded validators in the channel
    struct WithdrawalChannel {
        Validator[] validators;
        uint256 lastEdit;
        uint32 limit;
        uint32 funded;
    }

    /// @notice Structure representing a deposit in the factory
    /// @param index The index of the deposit in the withdrawal channel
    /// @param withdrawalChannel The withdrawal channel of the validator
    /// @param owner The owner of the deposited validator
    struct Deposit {
        uint256 index;
        bytes32 withdrawalChannel;
        address owner;
    }

    /// @notice Structure representing the operator metadata in the factory
    /// @param name The name of the operator
    /// @param url The url of the operator
    /// @param iconUrl The icon url of the operator
    struct Metadata {
        string name;
        string url;
        string iconUrl;
    }

    /// @notice Structure representing the global consensus layer spec held in the global consensus layer spec holder
    /// @param genesisTimestamp The timestamp of the genesis of the consensus layer (slot 0 timestamp)
    /// @param epochsUntilFinal The number of epochs until a block is considered final by the vsuite
    /// @param slotsPerEpoch The number of slots per epoch (32 on mainnet)
    /// @param secondsPerSlot The number of seconds per slot (12 on mainnet)
    struct ConsensusLayerSpec {
        uint64 genesisTimestamp;
        uint64 epochsUntilFinal;
        uint64 slotsPerEpoch;
        uint64 secondsPerSlot;
    }

    /// @notice Structure representing the report bounds held in the pools
    /// @param maxAPRUpperBound The maximum APR upper bound, representing the maximum increase in underlying balance checked at each oracle report
    /// @param maxAPRUpperCoverageBoost The maximum APR upper coverage boost, representing the additional increase allowed when pulling coverage funds
    /// @param maxRelativeLowerBound The maximum relative lower bound, representing the maximum decrease in underlying balance checked at each oracle report
    struct ReportBounds {
        uint64 maxAPRUpperBound;
        uint64 maxAPRUpperCoverageBoost;
        uint64 maxRelativeLowerBound;
    }

    /// @notice Structure representing the consensus layer report submitted by oracle members
    /// @param balanceSum sum of all the balances of all validators that have been activated by the vPool
    ///        this means that as long as the validator was activated, no matter its current status, its balance is taken
    ///        into account
    /// @param exitedSum sum of all the ether that has been exited by the validators that have been activated by the vPool
    ///        to compute this value, we look for withdrawal events inside the block bodies that have happened at an epoch
    ///        that is greater or equal to the withdrawable epoch of a validator purchased by the pool
    ///        when we detect any, we take min(amount,32 eth) into account as exited balance
    /// @param skimmedSum sum of all the ether that has been skimmed by the validators that have been activated by the vPool
    ///        similar to the exitedSum, we look for withdrawal events. If the epochs is lower than the withdrawable epoch
    ///        we take into account the full withdrawal amount, otherwise we take amount - min(amount, 32 eth) into account
    /// @param slashedSum sum of all the ether that has been slashed by the validators that have been activated by the vPool
    ///        to compute this value, we look for validators that are of have been in the slashed state
    ///        then we take the balance of the validator at the epoch prior to its slashing event
    ///        we then add the delta between this old balance and the current balance (or balance just before withdrawal)
    /// @param exiting amount of currently exiting eth, that will soon hit the withdrawal recipient
    ///        this value is computed by taking the balance of any validator in the exit or slashed state or after
    /// @param maxExitable maximum amount that can get requested for exits during report processing
    ///        this value is determined by the oracle. its calculation logic can be updated but all members need to agree and reach
    ///        consensus on the new calculation logic. Its role is to control the rate at which exit requests are performed
    /// @param maxCommittable maximum amount that can get committed for deposits during report processing
    ///        positive value means commit happens before possible exit boosts, negative after
    ///        similar to the mexExitable, this value is determined by the oracle. its calculation logic can be updated but all
    ///        members need to agree and reach consensus on the new calculation logic. Its role is to control the rate at which
    ///        deposit are made. Committed funds are funds that are always a multiple of 32 eth and that cannot be used for
    ///        anything else than purchasing validator, as opposed to the deposited funds that can still be used to fuel the
    ///        exit queue in some cases.
    ///  @param epoch epoch at which the report was crafter
    ///  @param activatedCount current count of validators that have been activated by the vPool
    ///         no matter the current state of the validator, if it has been activated, it has to be accounted inside this value
    ///  @param stoppedCount current count of validators that have been stopped (being in the exit queue, exited or slashed)
    struct ValidatorsReport {
        uint128 balanceSum;
        uint128 exitedSum;
        uint128 skimmedSum;
        uint128 slashedSum;
        uint128 exiting;
        uint128 maxExitable;
        int256 maxCommittable;
        uint64 epoch;
        uint32 activatedCount;
        uint32 stoppedCount;
    }

    /// @notice Structure representing the ethers held in the pools
    /// @param deposited The amount of deposited ethers, that can either be used to boost exits or get committed
    /// @param committed The amount of committed ethers, that can only be used to purchase validators
    struct Ethers {
        uint128 deposited;
        uint128 committed;
    }

    /// @notice Structure representing a ticket in the exit queue
    /// @param position The position of the ticket in the exit queue (equal to the position + size of the previous ticket)
    /// @param size The size of the ticket in the exit queue (in pool shares)
    /// @param maxExitable The maximum amount of ethers that can be exited by the ticket owner (no more rewards in the exit queue, losses are still mutualized)
    struct Ticket {
        uint128 position;
        uint128 size;
        uint128 maxExitable;
    }

    /// @notice Structure representing a cask in the exit queue. This entity is created by the pool upon oracle reports, when exit liquidity is available to feed the exit queue
    /// @param position The position of the cask in the exit queue (equal to the position + size of the previous cask)
    /// @param size The size of the cask in the exit queue (in pool shares)
    /// @param value The value of the cask in the exit queue (in ethers)
    struct Cask {
        uint128 position;
        uint128 size;
        uint128 value;
    }

    type DepositMapping is bytes32;
    type WithdrawalChannelMapping is bytes32;
    type BalanceMapping is bytes32;
    type MetadataStruct is bytes32;
    type ConsensusLayerSpecStruct is bytes32;
    type ReportBoundsStruct is bytes32;
    type ApprovalsMapping is bytes32;
    type ValidatorsReportStruct is bytes32;
    type EthersStruct is bytes32;
    type TicketArray is bytes32;
    type CaskArray is bytes32;
    type FactoryDepositorMapping is bytes32;
}

// SPDX-License-Identifier: MIT
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity 0.8.17;

/// @title Pool Shares Receiver Interface
/// @author mortimr @ Kiln
/// @notice Interface that needs to be implemented for a contract to be able to receive shares
interface IvPoolSharesReceiver {
    /// @notice Callback used by the vPool to notify contracts of shares being transfered
    /// @param operator The address of the operator of the transfer
    /// @param from The address sending the funds
    /// @param amount The amount of shares received
    /// @param data The attached data
    /// @return selector Should return its own selector if everything went well
    function onvPoolSharesReceived(address operator, address from, uint256 amount, bytes memory data) external returns (bytes4 selector);
}

// SPDX-License-Identifier: MIT
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity >=0.8.17;

/// @title Administrable Interface
/// @author mortimr @ Kiln
/// @dev Unstructured Storage Friendly
/// @notice This contract provides all the utilities to handle the administration and its transfer.
interface IAdministrable {
    /// @notice The admin address has been changed.
    /// @param admin The new admin address
    event SetAdmin(address admin);

    /// @notice The pending admin address has been changed.
    /// @param pendingAdmin The pending admin has been changed
    event SetPendingAdmin(address pendingAdmin);

    /// @notice Retrieve the admin address.
    /// @return adminAddress The admin address
    function admin() external view returns (address adminAddress);

    /// @notice Retrieve the pending admin address.
    /// @return pendingAdminAddress The pending admin address
    function pendingAdmin() external view returns (address pendingAdminAddress);

    /// @notice Propose a new admin.
    /// @dev Only callable by the admin
    /// @param _newAdmin The new admin to propose
    function transferAdmin(address _newAdmin) external;

    /// @notice Accept an admin transfer.
    /// @dev Only callable by the pending admin
    function acceptAdmin() external;
}

// SPDX-License-Identifier: MIT
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity >=0.8.17;

/// @title Depositor Interface
/// @author mortimr @ Kiln
/// @dev Unstructured Storage Friendly
/// @notice The Depositor contract adds deposit capabilities to easily fund
///         validators and activate them on the Consensus Layer.
interface IDepositor {
    /// @notice The provided public key is not 48 bytes long.
    error InvalidPublicKeyLength();

    /// @notice The provided signature is not 96 bytes long.
    error InvalidSignatureLength();

    /// @notice The balance is too low for the deposit.
    error InvalidDepositSize();

    /// @notice An error occured during the deposit.
    error DepositError();

    /// @notice The deposit contract address has been updated.
    /// @param depositContract The new deposit contract address
    event SetDepositContract(address depositContract);

    /// @notice Retrieve the deposit contract address.
    /// @return depositContractAddress The deposit contract address
    function depositContract() external view returns (address depositContractAddress);
}

// SPDX-License-Identifier: BUSL-1.1
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity >=0.8.17;

library LibErrors {
    error Unauthorized(address account, address expected);
    error InvalidZeroAddress();
    error InvalidNullValue();
    error InvalidBPSValue();
    error InvalidEmptyString();
}

// SPDX-License-Identifier: BUSL-1.1
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity >=0.8.17;

library LibConstant {
    /// @dev The basis points value representing 100%.
    uint256 internal constant BASIS_POINTS_MAX = 10_000;
    /// @dev The size of a deposit to activate a validator.
    uint256 internal constant DEPOSIT_SIZE = 32 ether;
    /// @dev The minimum freeze timeout before freeze is active.
    uint256 internal constant MINIMUM_FREEZE_TIMEOUT = 100 days;
    /// @dev Address used to represent ETH when an address is required to identify an asset.
    address internal constant ETHER = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
}

// 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: UNLICENSED
pragma solidity 0.8.17;

/// @title Uitls Custom Types
// slither-disable-next-line naming-convention
library uctypes {
    type OperatorApprovalsMapping is bytes32;
}

// SPDX-License-Identifier: Unlicense
pragma solidity >=0.8.4;

/// @notice Emitted when the result overflows uint256.
error PRBMath__MulDivFixedPointOverflow(uint256 prod1);

/// @notice Emitted when the result overflows uint256.
error PRBMath__MulDivOverflow(uint256 prod1, uint256 denominator);

/// @notice Emitted when one of the inputs is type(int256).min.
error PRBMath__MulDivSignedInputTooSmall();

/// @notice Emitted when the intermediary absolute result overflows int256.
error PRBMath__MulDivSignedOverflow(uint256 rAbs);

/// @notice Emitted when the input is MIN_SD59x18.
error PRBMathSD59x18__AbsInputTooSmall();

/// @notice Emitted when ceiling a number overflows SD59x18.
error PRBMathSD59x18__CeilOverflow(int256 x);

/// @notice Emitted when one of the inputs is MIN_SD59x18.
error PRBMathSD59x18__DivInputTooSmall();

/// @notice Emitted when one of the intermediary unsigned results overflows SD59x18.
error PRBMathSD59x18__DivOverflow(uint256 rAbs);

/// @notice Emitted when the input is greater than 133.084258667509499441.
error PRBMathSD59x18__ExpInputTooBig(int256 x);

/// @notice Emitted when the input is greater than 192.
error PRBMathSD59x18__Exp2InputTooBig(int256 x);

/// @notice Emitted when flooring a number underflows SD59x18.
error PRBMathSD59x18__FloorUnderflow(int256 x);

/// @notice Emitted when converting a basic integer to the fixed-point format overflows SD59x18.
error PRBMathSD59x18__FromIntOverflow(int256 x);

/// @notice Emitted when converting a basic integer to the fixed-point format underflows SD59x18.
error PRBMathSD59x18__FromIntUnderflow(int256 x);

/// @notice Emitted when the product of the inputs is negative.
error PRBMathSD59x18__GmNegativeProduct(int256 x, int256 y);

/// @notice Emitted when multiplying the inputs overflows SD59x18.
error PRBMathSD59x18__GmOverflow(int256 x, int256 y);

/// @notice Emitted when the input is less than or equal to zero.
error PRBMathSD59x18__LogInputTooSmall(int256 x);

/// @notice Emitted when one of the inputs is MIN_SD59x18.
error PRBMathSD59x18__MulInputTooSmall();

/// @notice Emitted when the intermediary absolute result overflows SD59x18.
error PRBMathSD59x18__MulOverflow(uint256 rAbs);

/// @notice Emitted when the intermediary absolute result overflows SD59x18.
error PRBMathSD59x18__PowuOverflow(uint256 rAbs);

/// @notice Emitted when the input is negative.
error PRBMathSD59x18__SqrtNegativeInput(int256 x);

/// @notice Emitted when the calculating the square root overflows SD59x18.
error PRBMathSD59x18__SqrtOverflow(int256 x);

/// @notice Emitted when addition overflows UD60x18.
error PRBMathUD60x18__AddOverflow(uint256 x, uint256 y);

/// @notice Emitted when ceiling a number overflows UD60x18.
error PRBMathUD60x18__CeilOverflow(uint256 x);

/// @notice Emitted when the input is greater than 133.084258667509499441.
error PRBMathUD60x18__ExpInputTooBig(uint256 x);

/// @notice Emitted when the input is greater than 192.
error PRBMathUD60x18__Exp2InputTooBig(uint256 x);

/// @notice Emitted when converting a basic integer to the fixed-point format format overflows UD60x18.
error PRBMathUD60x18__FromUintOverflow(uint256 x);

/// @notice Emitted when multiplying the inputs overflows UD60x18.
error PRBMathUD60x18__GmOverflow(uint256 x, uint256 y);

/// @notice Emitted when the input is less than 1.
error PRBMathUD60x18__LogInputTooSmall(uint256 x);

/// @notice Emitted when the calculating the square root overflows UD60x18.
error PRBMathUD60x18__SqrtOverflow(uint256 x);

/// @notice Emitted when subtraction underflows UD60x18.
error PRBMathUD60x18__SubUnderflow(uint256 x, uint256 y);

/// @dev Common mathematical functions used in both PRBMathSD59x18 and PRBMathUD60x18. Note that this shared library
/// does not always assume the signed 59.18-decimal fixed-point or the unsigned 60.18-decimal fixed-point
/// representation. When it does not, it is explicitly mentioned in the NatSpec documentation.
library PRBMath {
    /// STRUCTS ///

    struct SD59x18 {
        int256 value;
    }

    struct UD60x18 {
        uint256 value;
    }

    /// STORAGE ///

    /// @dev How many trailing decimals can be represented.
    uint256 internal constant SCALE = 1e18;

    /// @dev Largest power of two divisor of SCALE.
    uint256 internal constant SCALE_LPOTD = 262144;

    /// @dev SCALE inverted mod 2^256.
    uint256 internal constant SCALE_INVERSE =
        78156646155174841979727994598816262306175212592076161876661_508869554232690281;

    /// FUNCTIONS ///

    /// @notice Calculates the binary exponent of x using the binary fraction method.
    /// @dev Has to use 192.64-bit fixed-point numbers.
    /// See https://ethereum.stackexchange.com/a/96594/24693.
    /// @param x The exponent as an unsigned 192.64-bit fixed-point number.
    /// @return result The result as an unsigned 60.18-decimal fixed-point number.
    function exp2(uint256 x) internal pure returns (uint256 result) {
        unchecked {
            // Start from 0.5 in the 192.64-bit fixed-point format.
            result = 0x800000000000000000000000000000000000000000000000;

            // Multiply the result by root(2, 2^-i) when the bit at position i is 1. None of the intermediary results overflows
            // because the initial result is 2^191 and all magic factors are less than 2^65.
            if (x & 0x8000000000000000 > 0) {
                result = (result * 0x16A09E667F3BCC909) >> 64;
            }
            if (x & 0x4000000000000000 > 0) {
                result = (result * 0x1306FE0A31B7152DF) >> 64;
            }
            if (x & 0x2000000000000000 > 0) {
                result = (result * 0x1172B83C7D517ADCE) >> 64;
            }
            if (x & 0x1000000000000000 > 0) {
                result = (result * 0x10B5586CF9890F62A) >> 64;
            }
            if (x & 0x800000000000000 > 0) {
                result = (result * 0x1059B0D31585743AE) >> 64;
            }
            if (x & 0x400000000000000 > 0) {
                result = (result * 0x102C9A3E778060EE7) >> 64;
            }
            if (x & 0x200000000000000 > 0) {
                result = (result * 0x10163DA9FB33356D8) >> 64;
            }
            if (x & 0x100000000000000 > 0) {
                result = (result * 0x100B1AFA5ABCBED61) >> 64;
            }
            if (x & 0x80000000000000 > 0) {
                result = (result * 0x10058C86DA1C09EA2) >> 64;
            }
            if (x & 0x40000000000000 > 0) {
                result = (result * 0x1002C605E2E8CEC50) >> 64;
            }
            if (x & 0x20000000000000 > 0) {
                result = (result * 0x100162F3904051FA1) >> 64;
            }
            if (x & 0x10000000000000 > 0) {
                result = (result * 0x1000B175EFFDC76BA) >> 64;
            }
            if (x & 0x8000000000000 > 0) {
                result = (result * 0x100058BA01FB9F96D) >> 64;
            }
            if (x & 0x4000000000000 > 0) {
                result = (result * 0x10002C5CC37DA9492) >> 64;
            }
            if (x & 0x2000000000000 > 0) {
                result = (result * 0x1000162E525EE0547) >> 64;
            }
            if (x & 0x1000000000000 > 0) {
                result = (result * 0x10000B17255775C04) >> 64;
            }
            if (x & 0x800000000000 > 0) {
                result = (result * 0x1000058B91B5BC9AE) >> 64;
            }
            if (x & 0x400000000000 > 0) {
                result = (result * 0x100002C5C89D5EC6D) >> 64;
            }
            if (x & 0x200000000000 > 0) {
                result = (result * 0x10000162E43F4F831) >> 64;
            }
            if (x & 0x100000000000 > 0) {
                result = (result * 0x100000B1721BCFC9A) >> 64;
            }
            if (x & 0x80000000000 > 0) {
                result = (result * 0x10000058B90CF1E6E) >> 64;
            }
            if (x & 0x40000000000 > 0) {
                result = (result * 0x1000002C5C863B73F) >> 64;
            }
            if (x & 0x20000000000 > 0) {
                result = (result * 0x100000162E430E5A2) >> 64;
            }
            if (x & 0x10000000000 > 0) {
                result = (result * 0x1000000B172183551) >> 64;
            }
            if (x & 0x8000000000 > 0) {
                result = (result * 0x100000058B90C0B49) >> 64;
            }
            if (x & 0x4000000000 > 0) {
                result = (result * 0x10000002C5C8601CC) >> 64;
            }
            if (x & 0x2000000000 > 0) {
                result = (result * 0x1000000162E42FFF0) >> 64;
            }
            if (x & 0x1000000000 > 0) {
                result = (result * 0x10000000B17217FBB) >> 64;
            }
            if (x & 0x800000000 > 0) {
                result = (result * 0x1000000058B90BFCE) >> 64;
            }
            if (x & 0x400000000 > 0) {
                result = (result * 0x100000002C5C85FE3) >> 64;
            }
            if (x & 0x200000000 > 0) {
                result = (result * 0x10000000162E42FF1) >> 64;
            }
            if (x & 0x100000000 > 0) {
                result = (result * 0x100000000B17217F8) >> 64;
            }
            if (x & 0x80000000 > 0) {
                result = (result * 0x10000000058B90BFC) >> 64;
            }
            if (x & 0x40000000 > 0) {
                result = (result * 0x1000000002C5C85FE) >> 64;
            }
            if (x & 0x20000000 > 0) {
                result = (result * 0x100000000162E42FF) >> 64;
            }
            if (x & 0x10000000 > 0) {
                result = (result * 0x1000000000B17217F) >> 64;
            }
            if (x & 0x8000000 > 0) {
                result = (result * 0x100000000058B90C0) >> 64;
            }
            if (x & 0x4000000 > 0) {
                result = (result * 0x10000000002C5C860) >> 64;
            }
            if (x & 0x2000000 > 0) {
                result = (result * 0x1000000000162E430) >> 64;
            }
            if (x & 0x1000000 > 0) {
                result = (result * 0x10000000000B17218) >> 64;
            }
            if (x & 0x800000 > 0) {
                result = (result * 0x1000000000058B90C) >> 64;
            }
            if (x & 0x400000 > 0) {
                result = (result * 0x100000000002C5C86) >> 64;
            }
            if (x & 0x200000 > 0) {
                result = (result * 0x10000000000162E43) >> 64;
            }
            if (x & 0x100000 > 0) {
                result = (result * 0x100000000000B1721) >> 64;
            }
            if (x & 0x80000 > 0) {
                result = (result * 0x10000000000058B91) >> 64;
            }
            if (x & 0x40000 > 0) {
                result = (result * 0x1000000000002C5C8) >> 64;
            }
            if (x & 0x20000 > 0) {
                result = (result * 0x100000000000162E4) >> 64;
            }
            if (x & 0x10000 > 0) {
                result = (result * 0x1000000000000B172) >> 64;
            }
            if (x & 0x8000 > 0) {
                result = (result * 0x100000000000058B9) >> 64;
            }
            if (x & 0x4000 > 0) {
                result = (result * 0x10000000000002C5D) >> 64;
            }
            if (x & 0x2000 > 0) {
                result = (result * 0x1000000000000162E) >> 64;
            }
            if (x & 0x1000 > 0) {
                result = (result * 0x10000000000000B17) >> 64;
            }
            if (x & 0x800 > 0) {
                result = (result * 0x1000000000000058C) >> 64;
            }
            if (x & 0x400 > 0) {
                result = (result * 0x100000000000002C6) >> 64;
            }
            if (x & 0x200 > 0) {
                result = (result * 0x10000000000000163) >> 64;
            }
            if (x & 0x100 > 0) {
                result = (result * 0x100000000000000B1) >> 64;
            }
            if (x & 0x80 > 0) {
                result = (result * 0x10000000000000059) >> 64;
            }
            if (x & 0x40 > 0) {
                result = (result * 0x1000000000000002C) >> 64;
            }
            if (x & 0x20 > 0) {
                result = (result * 0x10000000000000016) >> 64;
            }
            if (x & 0x10 > 0) {
                result = (result * 0x1000000000000000B) >> 64;
            }
            if (x & 0x8 > 0) {
                result = (result * 0x10000000000000006) >> 64;
            }
            if (x & 0x4 > 0) {
                result = (result * 0x10000000000000003) >> 64;
            }
            if (x & 0x2 > 0) {
                result = (result * 0x10000000000000001) >> 64;
            }
            if (x & 0x1 > 0) {
                result = (result * 0x10000000000000001) >> 64;
            }

            // We're doing two things at the same time:
            //
            //   1. Multiply the result by 2^n + 1, where "2^n" is the integer part and the one is added to account for
            //      the fact that we initially set the result to 0.5. This is accomplished by subtracting from 191
            //      rather than 192.
            //   2. Convert the result to the unsigned 60.18-decimal fixed-point format.
            //
            // This works because 2^(191-ip) = 2^ip / 2^191, where "ip" is the integer part "2^n".
            result *= SCALE;
            result >>= (191 - (x >> 64));
        }
    }

    /// @notice Finds the zero-based index of the first one in the binary representation of x.
    /// @dev See the note on msb in the "Find First Set" Wikipedia article https://en.wikipedia.org/wiki/Find_first_set
    /// @param x The uint256 number for which to find the index of the most significant bit.
    /// @return msb The index of the most significant bit as an uint256.
    function mostSignificantBit(uint256 x) internal pure returns (uint256 msb) {
        if (x >= 2**128) {
            x >>= 128;
            msb += 128;
        }
        if (x >= 2**64) {
            x >>= 64;
            msb += 64;
        }
        if (x >= 2**32) {
            x >>= 32;
            msb += 32;
        }
        if (x >= 2**16) {
            x >>= 16;
            msb += 16;
        }
        if (x >= 2**8) {
            x >>= 8;
            msb += 8;
        }
        if (x >= 2**4) {
            x >>= 4;
            msb += 4;
        }
        if (x >= 2**2) {
            x >>= 2;
            msb += 2;
        }
        if (x >= 2**1) {
            // No need to shift x any more.
            msb += 1;
        }
    }

    /// @notice Calculates floor(x*y÷denominator) with full precision.
    ///
    /// @dev Credit to Remco Bloemen under MIT license https://xn--2-umb.com/21/muldiv.
    ///
    /// Requirements:
    /// - The denominator cannot be zero.
    /// - The result must fit within uint256.
    ///
    /// Caveats:
    /// - This function does not work with fixed-point numbers.
    ///
    /// @param x The multiplicand as an uint256.
    /// @param y The multiplier as an uint256.
    /// @param denominator The divisor as an uint256.
    /// @return result The result as an uint256.
    function mulDiv(
        uint256 x,
        uint256 y,
        uint256 denominator
    ) internal pure returns (uint256 result) {
        // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
        // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
        // variables such that product = prod1 * 2^256 + prod0.
        uint256 prod0; // Least significant 256 bits of the product
        uint256 prod1; // Most significant 256 bits of the product
        assembly {
            let mm := mulmod(x, y, not(0))
            prod0 := mul(x, y)
            prod1 := sub(sub(mm, prod0), lt(mm, prod0))
        }

        // Handle non-overflow cases, 256 by 256 division.
        if (prod1 == 0) {
            unchecked {
                result = prod0 / denominator;
            }
            return result;
        }

        // Make sure the result is less than 2^256. Also prevents denominator == 0.
        if (prod1 >= denominator) {
            revert PRBMath__MulDivOverflow(prod1, denominator);
        }

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

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

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

        // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
        // See https://cs.stackexchange.com/q/138556/92363.
        unchecked {
            // Does not overflow because the denominator cannot be zero at this stage in the function.
            uint256 lpotdod = denominator & (~denominator + 1);
            assembly {
                // Divide denominator by lpotdod.
                denominator := div(denominator, lpotdod)

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

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

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

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

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

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

    /// @notice Calculates floor(x*y÷1e18) with full precision.
    ///
    /// @dev Variant of "mulDiv" with constant folding, i.e. in which the denominator is always 1e18. Before returning the
    /// final result, we add 1 if (x * y) % SCALE >= HALF_SCALE. Without this, 6.6e-19 would be truncated to 0 instead of
    /// being rounded to 1e-18.  See "Listing 6" and text above it at https://accu.org/index.php/journals/1717.
    ///
    /// Requirements:
    /// - The result must fit within uint256.
    ///
    /// Caveats:
    /// - The body is purposely left uncommented; see the NatSpec comments in "PRBMath.mulDiv" to understand how this works.
    /// - It is assumed that the result can never be type(uint256).max when x and y solve the following two equations:
    ///     1. x * y = type(uint256).max * SCALE
    ///     2. (x * y) % SCALE >= SCALE / 2
    ///
    /// @param x The multiplicand as an unsigned 60.18-decimal fixed-point number.
    /// @param y The multiplier as an unsigned 60.18-decimal fixed-point number.
    /// @return result The result as an unsigned 60.18-decimal fixed-point number.
    function mulDivFixedPoint(uint256 x, uint256 y) internal pure returns (uint256 result) {
        uint256 prod0;
        uint256 prod1;
        assembly {
            let mm := mulmod(x, y, not(0))
            prod0 := mul(x, y)
            prod1 := sub(sub(mm, prod0), lt(mm, prod0))
        }

        if (prod1 >= SCALE) {
            revert PRBMath__MulDivFixedPointOverflow(prod1);
        }

        uint256 remainder;
        uint256 roundUpUnit;
        assembly {
            remainder := mulmod(x, y, SCALE)
            roundUpUnit := gt(remainder, 499999999999999999)
        }

        if (prod1 == 0) {
            unchecked {
                result = (prod0 / SCALE) + roundUpUnit;
                return result;
            }
        }

        assembly {
            result := add(
                mul(
                    or(
                        div(sub(prod0, remainder), SCALE_LPOTD),
                        mul(sub(prod1, gt(remainder, prod0)), add(div(sub(0, SCALE_LPOTD), SCALE_LPOTD), 1))
                    ),
                    SCALE_INVERSE
                ),
                roundUpUnit
            )
        }
    }

    /// @notice Calculates floor(x*y÷denominator) with full precision.
    ///
    /// @dev An extension of "mulDiv" for signed numbers. Works by computing the signs and the absolute values separately.
    ///
    /// Requirements:
    /// - None of the inputs can be type(int256).min.
    /// - The result must fit within int256.
    ///
    /// @param x The multiplicand as an int256.
    /// @param y The multiplier as an int256.
    /// @param denominator The divisor as an int256.
    /// @return result The result as an int256.
    function mulDivSigned(
        int256 x,
        int256 y,
        int256 denominator
    ) internal pure returns (int256 result) {
        if (x == type(int256).min || y == type(int256).min || denominator == type(int256).min) {
            revert PRBMath__MulDivSignedInputTooSmall();
        }

        // Get hold of the absolute values of x, y and the denominator.
        uint256 ax;
        uint256 ay;
        uint256 ad;
        unchecked {
            ax = x < 0 ? uint256(-x) : uint256(x);
            ay = y < 0 ? uint256(-y) : uint256(y);
            ad = denominator < 0 ? uint256(-denominator) : uint256(denominator);
        }

        // Compute the absolute value of (x*y)÷denominator. The result must fit within int256.
        uint256 rAbs = mulDiv(ax, ay, ad);
        if (rAbs > uint256(type(int256).max)) {
            revert PRBMath__MulDivSignedOverflow(rAbs);
        }

        // Get the signs of x, y and the denominator.
        uint256 sx;
        uint256 sy;
        uint256 sd;
        assembly {
            sx := sgt(x, sub(0, 1))
            sy := sgt(y, sub(0, 1))
            sd := sgt(denominator, sub(0, 1))
        }

        // XOR over sx, sy and sd. This is checking whether there are one or three negative signs in the inputs.
        // If yes, the result should be negative.
        result = sx ^ sy ^ sd == 0 ? -int256(rAbs) : int256(rAbs);
    }

    /// @notice Calculates the square root of x, rounding down.
    /// @dev Uses the Babylonian method https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method.
    ///
    /// Caveats:
    /// - This function does not work with fixed-point numbers.
    ///
    /// @param x The uint256 number for which to calculate the square root.
    /// @return result The result as an uint256.
    function sqrt(uint256 x) internal pure returns (uint256 result) {
        if (x == 0) {
            return 0;
        }

        // Set the initial guess to the least power of two that is greater than or equal to sqrt(x).
        uint256 xAux = uint256(x);
        result = 1;
        if (xAux >= 0x100000000000000000000000000000000) {
            xAux >>= 128;
            result <<= 64;
        }
        if (xAux >= 0x10000000000000000) {
            xAux >>= 64;
            result <<= 32;
        }
        if (xAux >= 0x100000000) {
            xAux >>= 32;
            result <<= 16;
        }
        if (xAux >= 0x10000) {
            xAux >>= 16;
            result <<= 8;
        }
        if (xAux >= 0x100) {
            xAux >>= 8;
            result <<= 4;
        }
        if (xAux >= 0x10) {
            xAux >>= 4;
            result <<= 2;
        }
        if (xAux >= 0x8) {
            result <<= 1;
        }

        // The operations can never overflow because the result is max 2^127 when it enters this block.
        unchecked {
            result = (result + x / result) >> 1;
            result = (result + x / result) >> 1;
            result = (result + x / result) >> 1;
            result = (result + x / result) >> 1;
            result = (result + x / result) >> 1;
            result = (result + x / result) >> 1;
            result = (result + x / result) >> 1; // Seven iterations should be enough
            uint256 roundedDownResult = x / result;
            return result >= roundedDownResult ? roundedDownResult : result;
        }
    }
}

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

pragma solidity ^0.8.0;

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

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

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

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

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

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

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                return prod0 / denominator;
            }

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

pragma solidity ^0.8.0;

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

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

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

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

// SPDX-License-Identifier: BUSL-1.1
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity >=0.8.17;

library LibPublicKey {
    // slither-disable-next-line unused-state
    uint256 constant PUBLIC_KEY_LENGTH = 48;

    // slither-disable-next-line unused-state
    bytes constant PADDING = hex"00000000000000000000000000000000";

    struct PublicKey {
        bytes32 A;
        bytes16 B;
    }

    // slither-disable-next-line dead-code
    function toBytes(PublicKey memory publicKey) internal pure returns (bytes memory) {
        return abi.encodePacked(publicKey.A, publicKey.B);
    }

    // slither-disable-next-line dead-code
    function fromBytes(bytes memory publicKey) internal pure returns (PublicKey memory ret) {
        publicKey = bytes.concat(publicKey, PADDING);
        (bytes32 A, bytes32 B_prime) = abi.decode(publicKey, (bytes32, bytes32));
        bytes16 B = bytes16(uint128(uint256(B_prime) >> 128));
        ret.A = A;
        ret.B = B;
    }
}

// SPDX-License-Identifier: BUSL-1.1
// SPDX-FileCopyrightText: 2023 Kiln <[email protected]>
//
// ██╗  ██╗██╗██╗     ███╗   ██╗
// ██║ ██╔╝██║██║     ████╗  ██║
// █████╔╝ ██║██║     ██╔██╗ ██║
// ██╔═██╗ ██║██║     ██║╚██╗██║
// ██║  ██╗██║███████╗██║ ╚████║
// ╚═╝  ╚═╝╚═╝╚══════╝╚═╝  ╚═══╝
//
pragma solidity >=0.8.17;

library LibSignature {
    // slither-disable-next-line unused-state
    uint256 constant SIGNATURE_LENGTH = 96;

    struct Signature {
        bytes32 A;
        bytes32 B;
        bytes32 C;
    }

    // slither-disable-next-line dead-code
    function toBytes(Signature memory signature) internal pure returns (bytes memory) {
        return abi.encodePacked(signature.A, signature.B, signature.C);
    }

    // slither-disable-next-line dead-code
    function fromBytes(bytes memory signature) internal pure returns (Signature memory ret) {
        (ret) = abi.decode(signature, (Signature));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/IERC721.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts 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);
}

{
  "remappings": [
    "deploy.sol/=lib/deploy.sol/src/",
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "forge-gas-snapshot/=lib/forge-gas-snapshot/src/",
    "forge-std/=lib/forge-std/src/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/contracts/",
    "prb-math/=lib/utils.sol/lib/prb-math/contracts/",
    "solmate/=lib/deploy.sol/lib/solmate/src/",
    "utils.sol.test/=lib/utils.sol/test/",
    "utils.sol/=lib/utils.sol/src/",
    "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
    "vulcan/=lib/vulcan/src/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs"
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "london",
  "viaIR": false,
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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