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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.12;

import "@eigenlayer/contracts/interfaces/IAVSDirectory.sol";
import "@eigenlayer-middleware/src/ServiceManagerBase.sol";


contract GoPlusServiceManager is ServiceManagerBase {
    address public gatewayAddr;
    string public gatewayURI;

    event GatewayAddressUpdated(address indexed oldAddr, address indexed newAddr);
    event GatewayURIUpdated(string oldURI, string newURI);

    constructor(
        IAVSDirectory _avsDirectory,
        IRegistryCoordinator _registryCoordinator,
        IStakeRegistry _stakeRegistry
    )
        ServiceManagerBase(
            _avsDirectory,
            _registryCoordinator,
            _stakeRegistry
        )
    {
    }

    function initialize(address initialOwner, address _gatewayAddr, string memory _gatewayURI, string memory _metadataURI) public virtual initializer {
        __ServiceManagerBase_init(initialOwner);
        require(_gatewayAddr != address(0), "Gateway address cannot be zero");
        gatewayAddr = _gatewayAddr;
        gatewayURI = _gatewayURI;

        emit GatewayAddressUpdated(address(0), _gatewayAddr);
        emit GatewayURIUpdated("", _gatewayURI);

        _avsDirectory.updateAVSMetadataURI(_metadataURI);

    }

    function updateGatewayAddress(address _gatewayAddr) external onlyOwner {
        require(_gatewayAddr != address(0), "Gateway address cannot be zero");
        address oldAddr = gatewayAddr;
        gatewayAddr = _gatewayAddr;
        emit GatewayAddressUpdated(oldAddr, _gatewayAddr);
    }

    function updateGatewayURI(string memory _gatewayURI) external onlyOwner {
        string memory oldURI = gatewayURI;
        gatewayURI = _gatewayURI;
        emit GatewayURIUpdated(oldURI, _gatewayURI);
    }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.5.0;

import "./ISignatureUtils.sol";

interface IAVSDirectory is ISignatureUtils {
    /// @notice Enum representing the status of an operator's registration with an AVS
    enum OperatorAVSRegistrationStatus {
        UNREGISTERED, // Operator not registered to AVS
        REGISTERED // Operator registered to AVS

    }

    /**
     * @notice Emitted when @param avs indicates that they are updating their MetadataURI string
     * @dev Note that these strings are *never stored in storage* and are instead purely emitted in events for off-chain indexing
     */
    event AVSMetadataURIUpdated(address indexed avs, string metadataURI);

    /// @notice Emitted when an operator's registration status for an AVS is updated
    event OperatorAVSRegistrationStatusUpdated(
        address indexed operator, address indexed avs, OperatorAVSRegistrationStatus status
    );

    /**
     * @notice Called by the AVS's service manager contract to register an operator with the avs.
     * @param operator The address of the operator to register.
     * @param operatorSignature The signature, salt, and expiry of the operator's signature.
     */
    function registerOperatorToAVS(
        address operator,
        ISignatureUtils.SignatureWithSaltAndExpiry memory operatorSignature
    ) external;

    /**
     * @notice Called by an avs to deregister an operator with the avs.
     * @param operator The address of the operator to deregister.
     */
    function deregisterOperatorFromAVS(address operator) external;

    /**
     * @notice Called by an AVS to emit an `AVSMetadataURIUpdated` event indicating the information has updated.
     * @param metadataURI The URI for metadata associated with an AVS
     * @dev Note that the `metadataURI` is *never stored * and is only emitted in the `AVSMetadataURIUpdated` event
     */
    function updateAVSMetadataURI(string calldata metadataURI) external;

    /**
     * @notice Returns whether or not the salt has already been used by the operator.
     * @dev Salts is used in the `registerOperatorToAVS` function.
     */
    function operatorSaltIsSpent(address operator, bytes32 salt) external view returns (bool);

    /**
     * @notice Calculates the digest hash to be signed by an operator to register with an AVS
     * @param operator The account registering as an operator
     * @param avs The address of the service manager contract for the AVS that the operator is registering to
     * @param salt A unique and single use value associated with the approver signature.
     * @param expiry Time after which the approver's signature becomes invalid
     */
    function calculateOperatorAVSRegistrationDigestHash(
        address operator,
        address avs,
        bytes32 salt,
        uint256 expiry
    ) external view returns (bytes32);

    /// @notice The EIP-712 typehash for the Registration struct used by the contract
    function OPERATOR_AVS_REGISTRATION_TYPEHASH() external view returns (bytes32);

    /**
     * @notice Called by an operator to cancel a salt that has been used to register with an AVS.
     * @param salt A unique and single use value associated with the approver signature.
     */
    function cancelSalt(bytes32 salt) external;

    /**
     * @notice Getter function for the current EIP-712 domain separator for this contract.
     *
     * @dev The domain separator will change in the event of a fork that changes the ChainID.
     * @dev By introducing a domain separator the DApp developers are guaranteed that there can be no signature collision.
     * for more detailed information please read EIP-712.
     */
    function domainSeparator() external view returns (bytes32);
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.12;

import {OwnableUpgradeable} from "@openzeppelin-upgrades/contracts/access/OwnableUpgradeable.sol";

import {BitmapUtils} from "./libraries/BitmapUtils.sol"; 
import {ISignatureUtils} from "eigenlayer-contracts/src/contracts/interfaces/ISignatureUtils.sol";
import {IAVSDirectory} from "eigenlayer-contracts/src/contracts/interfaces/IAVSDirectory.sol";

import {IServiceManager} from "./interfaces/IServiceManager.sol";
import {IRegistryCoordinator} from "./interfaces/IRegistryCoordinator.sol";
import {IStakeRegistry} from "./interfaces/IStakeRegistry.sol";

/**
 * @title Minimal implementation of a ServiceManager-type contract.
 * This contract can be inherited from or simply used as a point-of-reference.
 * @author Layr Labs, Inc.
 */
abstract contract ServiceManagerBase is IServiceManager, OwnableUpgradeable {
    using BitmapUtils for *;

    IRegistryCoordinator internal immutable _registryCoordinator;
    IStakeRegistry internal immutable _stakeRegistry;
    IAVSDirectory internal immutable _avsDirectory;

    /// @notice when applied to a function, only allows the RegistryCoordinator to call it
    modifier onlyRegistryCoordinator() {
        require(
            msg.sender == address(_registryCoordinator),
            "ServiceManagerBase.onlyRegistryCoordinator: caller is not the registry coordinator"
        );
        _;
    }

    /// @notice Sets the (immutable) `_registryCoordinator` address
    constructor(
        IAVSDirectory __avsDirectory,
        IRegistryCoordinator __registryCoordinator,
        IStakeRegistry __stakeRegistry
    ) {
        _avsDirectory = __avsDirectory;
        _registryCoordinator = __registryCoordinator;
        _stakeRegistry = __stakeRegistry;
        _disableInitializers();
    }

    function __ServiceManagerBase_init(address initialOwner) internal virtual onlyInitializing {
        _transferOwnership(initialOwner);
    }

    /**
     * @notice Updates the metadata URI for the AVS
     * @param _metadataURI is the metadata URI for the AVS
     * @dev only callable by the owner
     */
    function updateAVSMetadataURI(string memory _metadataURI) public virtual onlyOwner {
        _avsDirectory.updateAVSMetadataURI(_metadataURI);
    }

    /**
     * @notice Forwards a call to EigenLayer's AVSDirectory contract to confirm operator registration with the AVS
     * @param operator The address of the operator to register.
     * @param operatorSignature The signature, salt, and expiry of the operator's signature.
     */
    function registerOperatorToAVS(
        address operator,
        ISignatureUtils.SignatureWithSaltAndExpiry memory operatorSignature
    ) public virtual onlyRegistryCoordinator {
        _avsDirectory.registerOperatorToAVS(operator, operatorSignature);
    }

    /**
     * @notice Forwards a call to EigenLayer's AVSDirectory contract to confirm operator deregistration from the AVS
     * @param operator The address of the operator to deregister.
     */
    function deregisterOperatorFromAVS(address operator) public virtual onlyRegistryCoordinator {
        _avsDirectory.deregisterOperatorFromAVS(operator);
    }

    /**
     * @notice Returns the list of strategies that the AVS supports for restaking
     * @dev This function is intended to be called off-chain
     * @dev No guarantee is made on uniqueness of each element in the returned array. 
     *      The off-chain service should do that validation separately
     */
    function getRestakeableStrategies() external view returns (address[] memory) {
        uint256 quorumCount = _registryCoordinator.quorumCount();

        if (quorumCount == 0) {
            return new address[](0);
        }
        
        uint256 strategyCount;
        for(uint256 i = 0; i < quorumCount; i++) {
            strategyCount += _stakeRegistry.strategyParamsLength(uint8(i));
        }

        address[] memory restakedStrategies = new address[](strategyCount);
        uint256 index = 0;
        for(uint256 i = 0; i < _registryCoordinator.quorumCount(); i++) {
            uint256 strategyParamsLength = _stakeRegistry.strategyParamsLength(uint8(i));
            for (uint256 j = 0; j < strategyParamsLength; j++) {
                restakedStrategies[index] = address(_stakeRegistry.strategyParamsByIndex(uint8(i), j).strategy);
                index++;
            }
        }
        return restakedStrategies;
    }

    /**
     * @notice Returns the list of strategies that the operator has potentially restaked on the AVS
     * @param operator The address of the operator to get restaked strategies for
     * @dev This function is intended to be called off-chain
     * @dev No guarantee is made on whether the operator has shares for a strategy in a quorum or uniqueness 
     *      of each element in the returned array. The off-chain service should do that validation separately
     */
    function getOperatorRestakedStrategies(address operator) external view returns (address[] memory) {
        bytes32 operatorId = _registryCoordinator.getOperatorId(operator);
        uint192 operatorBitmap = _registryCoordinator.getCurrentQuorumBitmap(operatorId);

        if (operatorBitmap == 0 || _registryCoordinator.quorumCount() == 0) {
            return new address[](0);
        }

        // Get number of strategies for each quorum in operator bitmap
        bytes memory operatorRestakedQuorums = BitmapUtils.bitmapToBytesArray(operatorBitmap);
        uint256 strategyCount;
        for(uint256 i = 0; i < operatorRestakedQuorums.length; i++) {
            strategyCount += _stakeRegistry.strategyParamsLength(uint8(operatorRestakedQuorums[i]));
        }

        // Get strategies for each quorum in operator bitmap
        address[] memory restakedStrategies = new address[](strategyCount);
        uint256 index = 0;
        for(uint256 i = 0; i < operatorRestakedQuorums.length; i++) {
            uint8 quorum = uint8(operatorRestakedQuorums[i]);
            uint256 strategyParamsLength = _stakeRegistry.strategyParamsLength(quorum);
            for (uint256 j = 0; j < strategyParamsLength; j++) {
                restakedStrategies[index] = address(_stakeRegistry.strategyParamsByIndex(quorum, j).strategy);
                index++;
            }
        }
        return restakedStrategies;        
    }

    /// @notice Returns the EigenLayer AVSDirectory contract.
    function avsDirectory() external view override returns (address) {
        return address(_avsDirectory);
    }
    
    // storage gap for upgradeability
    // slither-disable-next-line shadowing-state
    uint256[50] private __GAP;
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.5.0;

/**
 * @title The interface for common signature utilities.
 * @author Layr Labs, Inc.
 * @notice Terms of Service: https://docs.eigenlayer.xyz/overview/terms-of-service
 */
interface ISignatureUtils {
    // @notice Struct that bundles together a signature and an expiration time for the signature. Used primarily for stack management.
    struct SignatureWithExpiry {
        // the signature itself, formatted as a single bytes object
        bytes signature;
        // the expiration timestamp (UTC) of the signature
        uint256 expiry;
    }

    // @notice Struct that bundles together a signature, a salt for uniqueness, and an expiration time for the signature. Used primarily for stack management.
    struct SignatureWithSaltAndExpiry {
        // the signature itself, formatted as a single bytes object
        bytes signature;
        // the salt used to generate the signature
        bytes32 salt;
        // the expiration timestamp (UTC) of the signature
        uint256 expiry;
    }
}

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

pragma solidity ^0.8.0;

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

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    function __Ownable_init() internal onlyInitializing {
        __Ownable_init_unchained();
    }

    function __Ownable_init_unchained() internal onlyInitializing {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }

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

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.12;

/**
 * @title Library for Bitmap utilities such as converting between an array of bytes and a bitmap and finding the number of 1s in a bitmap.
 * @author Layr Labs, Inc.
 */
library BitmapUtils {
    /**
     * @notice Byte arrays are meant to contain unique bytes.
     * If the array length exceeds 256, then it's impossible for all entries to be unique.
     * This constant captures the max allowed array length (inclusive, i.e. 256 is allowed).
     */
    uint256 internal constant MAX_BYTE_ARRAY_LENGTH = 256;

    /**
     * @notice Converts an ordered array of bytes into a bitmap.
     * @param orderedBytesArray The array of bytes to convert/compress into a bitmap. Must be in strictly ascending order.
     * @return The resulting bitmap.
     * @dev Each byte in the input is processed as indicating a single bit to flip in the bitmap.
     * @dev This function will eventually revert in the event that the `orderedBytesArray` is not properly ordered (in ascending order).
     * @dev This function will also revert if the `orderedBytesArray` input contains any duplicate entries (i.e. duplicate bytes).
     */
    function orderedBytesArrayToBitmap(bytes memory orderedBytesArray) internal pure returns (uint256) {
        // sanity-check on input. a too-long input would fail later on due to having duplicate entry(s)
        require(orderedBytesArray.length <= MAX_BYTE_ARRAY_LENGTH,
            "BitmapUtils.orderedBytesArrayToBitmap: orderedBytesArray is too long");

        // return empty bitmap early if length of array is 0
        if (orderedBytesArray.length == 0) {
            return uint256(0);
        }

        // initialize the empty bitmap, to be built inside the loop
        uint256 bitmap;
        // initialize an empty uint256 to be used as a bitmask inside the loop
        uint256 bitMask;

        // perform the 0-th loop iteration with the ordering check *omitted* (since it is unnecessary / will always pass)
        // construct a single-bit mask from the numerical value of the 0th byte of the array, and immediately add it to the bitmap
        bitmap = uint256(1 << uint8(orderedBytesArray[0]));

        // loop through each byte in the array to construct the bitmap
        for (uint256 i = 1; i < orderedBytesArray.length; ++i) {
            // construct a single-bit mask from the numerical value of the next byte of the array
            bitMask = uint256(1 << uint8(orderedBytesArray[i]));
            // check strictly ascending array ordering by comparing the mask to the bitmap so far (revert if mask isn't greater than bitmap)
            require(bitMask > bitmap, "BitmapUtils.orderedBytesArrayToBitmap: orderedBytesArray is not ordered");
            // add the entry to the bitmap
            bitmap = (bitmap | bitMask);
        }
        return bitmap;
    }

    /**
     * @notice Converts an ordered byte array to a bitmap, validating that all bits are less than `bitUpperBound`
     * @param orderedBytesArray The array to convert to a bitmap; must be in strictly ascending order
     * @param bitUpperBound The exclusive largest bit. Each bit must be strictly less than this value.
     * @dev Reverts if bitmap contains a bit greater than or equal to `bitUpperBound`
     */
    function orderedBytesArrayToBitmap(bytes memory orderedBytesArray, uint8 bitUpperBound) internal pure returns (uint256) {
        uint256 bitmap = orderedBytesArrayToBitmap(orderedBytesArray);

        require((1 << bitUpperBound) > bitmap, 
            "BitmapUtils.orderedBytesArrayToBitmap: bitmap exceeds max value"
        );

        return bitmap;
    }

    /**
     * @notice Utility function for checking if a bytes array is strictly ordered, in ascending order.
     * @param bytesArray the bytes array of interest
     * @return Returns 'true' if the array is ordered in strictly ascending order, and 'false' otherwise.
     * @dev This function returns 'true' for the edge case of the `bytesArray` having zero length.
     * It also returns 'false' early for arrays with length in excess of MAX_BYTE_ARRAY_LENGTH (i.e. so long that they cannot be strictly ordered)
     */
    function isArrayStrictlyAscendingOrdered(bytes calldata bytesArray) internal pure returns (bool) {
        // Return early if the array is too long, or has a length of 0
        if (bytesArray.length > MAX_BYTE_ARRAY_LENGTH) {
            return false;
        }

        if (bytesArray.length == 0) {
            return true;
        }

        // Perform the 0-th loop iteration by pulling the 0th byte out of the array
        bytes1 singleByte = bytesArray[0];

        // For each byte, validate that each entry is *strictly greater than* the previous
        // If it isn't, return false as the array is not ordered
        for (uint256 i = 1; i < bytesArray.length; ++i) {
            if (uint256(uint8(bytesArray[i])) <= uint256(uint8(singleByte))) {
                return false;
            }
            
            // Pull the next byte out of the array
            singleByte = bytesArray[i];
        }
        
        return true;
    }

    /**
     * @notice Converts a bitmap into an array of bytes.
     * @param bitmap The bitmap to decompress/convert to an array of bytes.
     * @return bytesArray The resulting bitmap array of bytes.
     * @dev Each byte in the input is processed as indicating a single bit to flip in the bitmap
     */
    function bitmapToBytesArray(uint256 bitmap) internal pure returns (bytes memory /*bytesArray*/) {
        // initialize an empty uint256 to be used as a bitmask inside the loop
        uint256 bitMask;
        // allocate only the needed amount of memory
        bytes memory bytesArray = new bytes(countNumOnes(bitmap));
        // track the array index to assign to
        uint256 arrayIndex = 0;
        /**
         * loop through each index in the bitmap to construct the array,
         * but short-circuit the loop if we reach the number of ones and thus are done
         * assigning to memory
         */
        for (uint256 i = 0; (arrayIndex < bytesArray.length) && (i < 256); ++i) {
            // construct a single-bit mask for the i-th bit
            bitMask = uint256(1 << i);
            // check if the i-th bit is flipped in the bitmap
            if (bitmap & bitMask != 0) {
                // if the i-th bit is flipped, then add a byte encoding the value 'i' to the `bytesArray`
                bytesArray[arrayIndex] = bytes1(uint8(i));
                // increment the bytesArray slot since we've assigned one more byte of memory
                unchecked{ ++arrayIndex; }
            }
        }
        return bytesArray;
    }

    /// @return count number of ones in binary representation of `n`
    function countNumOnes(uint256 n) internal pure returns (uint16) {
        uint16 count = 0;
        while (n > 0) {
            n &= (n - 1); // Clear the least significant bit (turn off the rightmost set bit).
            count++; // Increment the count for each cleared bit (each one encountered).
        }
        return count; // Return the total count of ones in the binary representation of n.
    }

    /// @notice Returns `true` if `bit` is in `bitmap`. Returns `false` otherwise.
    function isSet(uint256 bitmap, uint8 bit) internal pure returns (bool) {
        return 1 == ((bitmap >> bit) & 1);
    }
    
    /**
     * @notice Returns a copy of `bitmap` with `bit` set. 
     * @dev IMPORTANT: we're dealing with stack values here, so this doesn't modify
     * the original bitmap. Using this correctly requires an assignment statement:
     * `bitmap = bitmap.setBit(bit);`
     */
    function setBit(uint256 bitmap, uint8 bit) internal pure returns (uint256) {
        return bitmap | (1 << bit);
    }

    /**
     * @notice Returns true if `bitmap` has no set bits
     */
    function isEmpty(uint256 bitmap) internal pure returns (bool) {
        return bitmap == 0;
    }

    /**
     * @notice Returns true if `a` and `b` have no common set bits
     */
    function noBitsInCommon(uint256 a, uint256 b) internal pure returns (bool) {
        return a & b == 0;
    }

    /**
     * @notice Returns true if `a` is a subset of `b`: ALL of the bits in `a` are also in `b`
     */
    function isSubsetOf(uint256 a, uint256 b) internal pure returns (bool) {
        return a & b == a;
    }

    /**
     * @notice Returns a new bitmap that contains all bits set in either `a` or `b`
     * @dev Result is the union of `a` and `b`
     */
    function plus(uint256 a, uint256 b) internal pure returns (uint256) {
        return a | b;
    }

    /**
     * @notice Returns a new bitmap that clears all set bits of `b` from `a`
     * @dev Negates `b` and returns the intersection of the result with `a`
     */
    function minus(uint256 a, uint256 b) internal pure returns (uint256) {
        return a & ~b;
    }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.5.0;

import {ISignatureUtils} from "eigenlayer-contracts/src/contracts/interfaces/ISignatureUtils.sol";
import {IDelegationManager} from "eigenlayer-contracts/src/contracts/interfaces/IDelegationManager.sol";

/**
 * @title Minimal interface for a ServiceManager-type contract that forms the single point for an AVS to push updates to EigenLayer
 * @author Layr Labs, Inc.
 */
interface IServiceManager {
    /**
     * @notice Updates the metadata URI for the AVS
     * @param _metadataURI is the metadata URI for the AVS
     */
    function updateAVSMetadataURI(string memory _metadataURI) external;

    /**
     * @notice Forwards a call to EigenLayer's DelegationManager contract to confirm operator registration with the AVS
     * @param operator The address of the operator to register.
     * @param operatorSignature The signature, salt, and expiry of the operator's signature.
     */
    function registerOperatorToAVS(
        address operator,
        ISignatureUtils.SignatureWithSaltAndExpiry memory operatorSignature
    ) external;

    /**
     * @notice Forwards a call to EigenLayer's DelegationManager contract to confirm operator deregistration from the AVS
     * @param operator The address of the operator to deregister.
     */
    function deregisterOperatorFromAVS(address operator) external;

    /**
     * @notice Returns the list of strategies that the operator has potentially restaked on the AVS
     * @param operator The address of the operator to get restaked strategies for
     * @dev This function is intended to be called off-chain
     * @dev No guarantee is made on whether the operator has shares for a strategy in a quorum or uniqueness 
     *      of each element in the returned array. The off-chain service should do that validation separately
     */
    function getOperatorRestakedStrategies(address operator) external view returns (address[] memory);

    /**
     * @notice Returns the list of strategies that the AVS supports for restaking
     * @dev This function is intended to be called off-chain
     * @dev No guarantee is made on uniqueness of each element in the returned array. 
     *      The off-chain service should do that validation separately
     */
    function getRestakeableStrategies() external view returns (address[] memory);

    /// @notice Returns the EigenLayer AVSDirectory contract.
    function avsDirectory() external view returns (address);
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.12;

import {IBLSApkRegistry} from "./IBLSApkRegistry.sol";
import {IStakeRegistry} from "./IStakeRegistry.sol";
import {IIndexRegistry} from "./IIndexRegistry.sol";
import {BN254} from "../libraries/BN254.sol";

/**
 * @title Interface for a contract that coordinates between various registries for an AVS.
 * @author Layr Labs, Inc.
 */
interface IRegistryCoordinator {
    // EVENTS

    /// Emits when an operator is registered
    event OperatorRegistered(address indexed operator, bytes32 indexed operatorId);

    /// Emits when an operator is deregistered
    event OperatorDeregistered(address indexed operator, bytes32 indexed operatorId);

    event OperatorSetParamsUpdated(uint8 indexed quorumNumber, OperatorSetParam operatorSetParams);

    event ChurnApproverUpdated(address prevChurnApprover, address newChurnApprover);

    event EjectorUpdated(address prevEjector, address newEjector);

    /// @notice emitted when all the operators for a quorum are updated at once
    event QuorumBlockNumberUpdated(uint8 indexed quorumNumber, uint256 blocknumber);

    // DATA STRUCTURES
    enum OperatorStatus
    {
        // default is NEVER_REGISTERED
        NEVER_REGISTERED,
        REGISTERED,
        DEREGISTERED
    }

    // STRUCTS

    /**
     * @notice Data structure for storing info on operators
     */
    struct OperatorInfo {
        // the id of the operator, which is likely the keccak256 hash of the operator's public key if using BLSRegistry
        bytes32 operatorId;
        // indicates whether the operator is actively registered for serving the middleware or not
        OperatorStatus status;
    }

    /**
     * @notice Data structure for storing info on quorum bitmap updates where the `quorumBitmap` is the bitmap of the 
     * quorums the operator is registered for starting at (inclusive)`updateBlockNumber` and ending at (exclusive) `nextUpdateBlockNumber`
     * @dev nextUpdateBlockNumber is initialized to 0 for the latest update
     */
    struct QuorumBitmapUpdate {
        uint32 updateBlockNumber;
        uint32 nextUpdateBlockNumber;
        uint192 quorumBitmap;
    }

    /**
     * @notice Data structure for storing operator set params for a given quorum. Specifically the 
     * `maxOperatorCount` is the maximum number of operators that can be registered for the quorum,
     * `kickBIPsOfOperatorStake` is the basis points of a new operator needs to have of an operator they are trying to kick from the quorum,
     * and `kickBIPsOfTotalStake` is the basis points of the total stake of the quorum that an operator needs to be below to be kicked.
     */ 
     struct OperatorSetParam {
        uint32 maxOperatorCount;
        uint16 kickBIPsOfOperatorStake;
        uint16 kickBIPsOfTotalStake;
    }

    /**
     * @notice Data structure for the parameters needed to kick an operator from a quorum with number `quorumNumber`, used during registration churn.
     * `operator` is the address of the operator to kick
     */
    struct OperatorKickParam {
        uint8 quorumNumber;
        address operator;
    }

    /// @notice Returns the operator set params for the given `quorumNumber`
    function getOperatorSetParams(uint8 quorumNumber) external view returns (OperatorSetParam memory);
    /// @notice the Stake registry contract that will keep track of operators' stakes
    function stakeRegistry() external view returns (IStakeRegistry);
    /// @notice the BLS Aggregate Pubkey Registry contract that will keep track of operators' BLS aggregate pubkeys per quorum
    function blsApkRegistry() external view returns (IBLSApkRegistry);
    /// @notice the index Registry contract that will keep track of operators' indexes
    function indexRegistry() external view returns (IIndexRegistry);

    /**
     * @notice Ejects the provided operator from the provided quorums from the AVS
     * @param operator is the operator to eject
     * @param quorumNumbers are the quorum numbers to eject the operator from
     */
    function ejectOperator(
        address operator, 
        bytes calldata quorumNumbers
    ) external;

    /// @notice Returns the number of quorums the registry coordinator has created
    function quorumCount() external view returns (uint8);

    /// @notice Returns the operator struct for the given `operator`
    function getOperator(address operator) external view returns (OperatorInfo memory);

    /// @notice Returns the operatorId for the given `operator`
    function getOperatorId(address operator) external view returns (bytes32);

    /// @notice Returns the operator address for the given `operatorId`
    function getOperatorFromId(bytes32 operatorId) external view returns (address operator);

    /// @notice Returns the status for the given `operator`
    function getOperatorStatus(address operator) external view returns (IRegistryCoordinator.OperatorStatus);

    /// @notice Returns the indices of the quorumBitmaps for the provided `operatorIds` at the given `blockNumber`
    function getQuorumBitmapIndicesAtBlockNumber(uint32 blockNumber, bytes32[] memory operatorIds) external view returns (uint32[] memory);

    /**
     * @notice Returns the quorum bitmap for the given `operatorId` at the given `blockNumber` via the `index`
     * @dev reverts if `index` is incorrect 
     */ 
    function getQuorumBitmapAtBlockNumberByIndex(bytes32 operatorId, uint32 blockNumber, uint256 index) external view returns (uint192);

    /// @notice Returns the `index`th entry in the operator with `operatorId`'s bitmap history
    function getQuorumBitmapUpdateByIndex(bytes32 operatorId, uint256 index) external view returns (QuorumBitmapUpdate memory);

    /// @notice Returns the current quorum bitmap for the given `operatorId`
    function getCurrentQuorumBitmap(bytes32 operatorId) external view returns (uint192);

    /// @notice Returns the length of the quorum bitmap history for the given `operatorId`
    function getQuorumBitmapHistoryLength(bytes32 operatorId) external view returns (uint256);

    /// @notice Returns the registry at the desired index
    function registries(uint256) external view returns (address);

    /// @notice Returns the number of registries
    function numRegistries() external view returns (uint256);

    /**
     * @notice Returns the message hash that an operator must sign to register their BLS public key.
     * @param operator is the address of the operator registering their BLS public key
     */
    function pubkeyRegistrationMessageHash(address operator) external view returns (BN254.G1Point memory);

    /// @notice returns the blocknumber the quorum was last updated all at once for all operators
    function quorumUpdateBlockNumber(uint8 quorumNumber) external view returns (uint256);

    /// @notice The owner of the registry coordinator
    function owner() external view returns (address);
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.12;

import {IDelegationManager} from "eigenlayer-contracts/src/contracts/interfaces/IDelegationManager.sol";
import {IStrategy} from "eigenlayer-contracts/src/contracts/interfaces/IStrategy.sol";

import {IRegistry} from "./IRegistry.sol";

/**
 * @title Interface for a `Registry` that keeps track of stakes of operators for up to 256 quorums.
 * @author Layr Labs, Inc.
 */
interface IStakeRegistry is IRegistry {
    
    // DATA STRUCTURES

    /// @notice struct used to store the stakes of an individual operator or the sum of all operators' stakes, for storage
    struct StakeUpdate {
        // the block number at which the stake amounts were updated and stored
        uint32 updateBlockNumber;
        // the block number at which the *next update* occurred.
        /// @notice This entry has the value **0** until another update takes place.
        uint32 nextUpdateBlockNumber;
        // stake weight for the quorum
        uint96 stake;
    }

    /**
     * @notice In weighing a particular strategy, the amount of underlying asset for that strategy is
     * multiplied by its multiplier, then divided by WEIGHTING_DIVISOR
     */
    struct StrategyParams {
        IStrategy strategy;
        uint96 multiplier;
    }

    // EVENTS

    /// @notice emitted whenever the stake of `operator` is updated
    event OperatorStakeUpdate(
        bytes32 indexed operatorId,
        uint8 quorumNumber,
        uint96 stake
    );
    /// @notice emitted when the minimum stake for a quorum is updated
    event MinimumStakeForQuorumUpdated(uint8 indexed quorumNumber, uint96 minimumStake);
    /// @notice emitted when a new quorum is created
    event QuorumCreated(uint8 indexed quorumNumber);
    /// @notice emitted when `strategy` has been added to the array at `strategyParams[quorumNumber]`
    event StrategyAddedToQuorum(uint8 indexed quorumNumber, IStrategy strategy);
    /// @notice emitted when `strategy` has removed from the array at `strategyParams[quorumNumber]`
    event StrategyRemovedFromQuorum(uint8 indexed quorumNumber, IStrategy strategy);
    /// @notice emitted when `strategy` has its `multiplier` updated in the array at `strategyParams[quorumNumber]`
    event StrategyMultiplierUpdated(uint8 indexed quorumNumber, IStrategy strategy, uint256 multiplier);

    /**
     * @notice Registers the `operator` with `operatorId` for the specified `quorumNumbers`.
     * @param operator The address of the operator to register.
     * @param operatorId The id of the operator to register.
     * @param quorumNumbers The quorum numbers the operator is registering for, where each byte is an 8 bit integer quorumNumber.
     * @return The operator's current stake for each quorum, and the total stake for each quorum
     * @dev access restricted to the RegistryCoordinator
     * @dev Preconditions (these are assumed, not validated in this contract):
     *         1) `quorumNumbers` has no duplicates
     *         2) `quorumNumbers.length` != 0
     *         3) `quorumNumbers` is ordered in ascending order
     *         4) the operator is not already registered
     */
    function registerOperator(
        address operator, 
        bytes32 operatorId, 
        bytes memory quorumNumbers
    ) external returns (uint96[] memory, uint96[] memory);

    /**
     * @notice Deregisters the operator with `operatorId` for the specified `quorumNumbers`.
     * @param operatorId The id of the operator to deregister.
     * @param quorumNumbers The quorum numbers the operator is deregistering from, where each byte is an 8 bit integer quorumNumber.
     * @dev access restricted to the RegistryCoordinator
     * @dev Preconditions (these are assumed, not validated in this contract):
     *         1) `quorumNumbers` has no duplicates
     *         2) `quorumNumbers.length` != 0
     *         3) `quorumNumbers` is ordered in ascending order
     *         4) the operator is not already deregistered
     *         5) `quorumNumbers` is a subset of the quorumNumbers that the operator is registered for
     */
    function deregisterOperator(bytes32 operatorId, bytes memory quorumNumbers) external;

    /**
     * @notice Initialize a new quorum created by the registry coordinator by setting strategies, weights, and minimum stake
     */
    function initializeQuorum(uint8 quorumNumber, uint96 minimumStake, StrategyParams[] memory strategyParams) external;

    /// @notice Adds new strategies and the associated multipliers to the @param quorumNumber.
    function addStrategies(
        uint8 quorumNumber,
        StrategyParams[] memory strategyParams
    ) external;

    /**
     * @notice This function is used for removing strategies and their associated weights from the
     * mapping strategyParams for a specific @param quorumNumber.
     * @dev higher indices should be *first* in the list of @param indicesToRemove, since otherwise
     * the removal of lower index entries will cause a shift in the indices of the other strategiesToRemove
     */
    function removeStrategies(uint8 quorumNumber, uint256[] calldata indicesToRemove) external;

    /**
     * @notice This function is used for modifying the weights of strategies that are already in the
     * mapping strategyParams for a specific
     * @param quorumNumber is the quorum number to change the strategy for
     * @param strategyIndices are the indices of the strategies to change
     * @param newMultipliers are the new multipliers for the strategies
     */
    function modifyStrategyParams(
        uint8 quorumNumber,
        uint256[] calldata strategyIndices,
        uint96[] calldata newMultipliers
    ) external;

    /// @notice Constant used as a divisor in calculating weights.
    function WEIGHTING_DIVISOR() external pure returns (uint256);

    /// @notice Returns the EigenLayer delegation manager contract.
    function delegation() external view returns (IDelegationManager);

    /// @notice In order to register for a quorum i, an operator must have at least `minimumStakeForQuorum[i]`
    function minimumStakeForQuorum(uint8 quorumNumber) external view returns (uint96);

    /// @notice Returns the length of the dynamic array stored in `strategyParams[quorumNumber]`.
    function strategyParamsLength(uint8 quorumNumber) external view returns (uint256);

    /// @notice Returns the strategy and weight multiplier for the `index`'th strategy in the quorum `quorumNumber`
    function strategyParamsByIndex(
        uint8 quorumNumber,
        uint256 index
    ) external view returns (StrategyParams memory);

    /**
     * @notice This function computes the total weight of the @param operator in the quorum @param quorumNumber.
     * @dev reverts in the case that `quorumNumber` is greater than or equal to `quorumCount`
     */
    function weightOfOperatorForQuorum(uint8 quorumNumber, address operator) external view returns (uint96);

    /**
     * @notice Returns the entire `operatorIdToStakeHistory[operatorId][quorumNumber]` array.
     * @param operatorId The id of the operator of interest.
     * @param quorumNumber The quorum number to get the stake for.
     */
    function getStakeHistory(bytes32 operatorId, uint8 quorumNumber) external view returns (StakeUpdate[] memory);

    function getTotalStakeHistoryLength(uint8 quorumNumber) external view returns (uint256);

    /**
     * @notice Returns the `index`-th entry in the dynamic array of total stake, `totalStakeHistory` for quorum `quorumNumber`.
     * @param quorumNumber The quorum number to get the stake for.
     * @param index Array index for lookup, within the dynamic array `totalStakeHistory[quorumNumber]`.
     */
    function getTotalStakeUpdateAtIndex(uint8 quorumNumber, uint256 index) external view returns (StakeUpdate memory);

    /// @notice Returns the indices of the operator stakes for the provided `quorumNumber` at the given `blockNumber`
    function getStakeUpdateIndexAtBlockNumber(bytes32 operatorId, uint8 quorumNumber, uint32 blockNumber)
        external
        view
        returns (uint32);

    /// @notice Returns the indices of the total stakes for the provided `quorumNumbers` at the given `blockNumber`
    function getTotalStakeIndicesAtBlockNumber(uint32 blockNumber, bytes calldata quorumNumbers) external view returns(uint32[] memory) ;

    /**
     * @notice Returns the `index`-th entry in the `operatorIdToStakeHistory[operatorId][quorumNumber]` array.
     * @param quorumNumber The quorum number to get the stake for.
     * @param operatorId The id of the operator of interest.
     * @param index Array index for lookup, within the dynamic array `operatorIdToStakeHistory[operatorId][quorumNumber]`.
     * @dev Function will revert if `index` is out-of-bounds.
     */
    function getStakeUpdateAtIndex(uint8 quorumNumber, bytes32 operatorId, uint256 index)
        external
        view
        returns (StakeUpdate memory);

    /**
     * @notice Returns the most recent stake weight for the `operatorId` for a certain quorum
     * @dev Function returns an StakeUpdate struct with **every entry equal to 0** in the event that the operator has no stake history
     */
    function getLatestStakeUpdate(bytes32 operatorId, uint8 quorumNumber) external view returns (StakeUpdate memory);

    /**
     * @notice Returns the stake weight corresponding to `operatorId` for quorum `quorumNumber`, at the
     * `index`-th entry in the `operatorIdToStakeHistory[operatorId][quorumNumber]` array if the entry 
     * corresponds to the operator's stake at `blockNumber`. Reverts otherwise.
     * @param quorumNumber The quorum number to get the stake for.
     * @param operatorId The id of the operator of interest.
     * @param index Array index for lookup, within the dynamic array `operatorIdToStakeHistory[operatorId][quorumNumber]`.
     * @param blockNumber Block number to make sure the stake is from.
     * @dev Function will revert if `index` is out-of-bounds.
     * @dev used the BLSSignatureChecker to get past stakes of signing operators
     */
    function getStakeAtBlockNumberAndIndex(uint8 quorumNumber, uint32 blockNumber, bytes32 operatorId, uint256 index)
        external
        view
        returns (uint96);

    /**
     * @notice Returns the total stake weight for quorum `quorumNumber`, at the `index`-th entry in the 
     * `totalStakeHistory[quorumNumber]` array if the entry corresponds to the total stake at `blockNumber`. 
     * Reverts otherwise.
     * @param quorumNumber The quorum number to get the stake for.
     * @param index Array index for lookup, within the dynamic array `totalStakeHistory[quorumNumber]`.
     * @param blockNumber Block number to make sure the stake is from.
     * @dev Function will revert if `index` is out-of-bounds.
     * @dev used the BLSSignatureChecker to get past stakes of signing operators
     */
    function getTotalStakeAtBlockNumberFromIndex(uint8 quorumNumber, uint32 blockNumber, uint256 index) external view returns (uint96);

    /**
     * @notice Returns the most recent stake weight for the `operatorId` for quorum `quorumNumber`
     * @dev Function returns weight of **0** in the event that the operator has no stake history
     */
    function getCurrentStake(bytes32 operatorId, uint8 quorumNumber) external view returns (uint96);

    /// @notice Returns the stake of the operator for the provided `quorumNumber` at the given `blockNumber`
    function getStakeAtBlockNumber(bytes32 operatorId, uint8 quorumNumber, uint32 blockNumber)
        external
        view
        returns (uint96);

    /**
     * @notice Returns the stake weight from the latest entry in `_totalStakeHistory` for quorum `quorumNumber`.
     * @dev Will revert if `_totalStakeHistory[quorumNumber]` is empty.
     */
    function getCurrentTotalStake(uint8 quorumNumber) external view returns (uint96);

    /**
     * @notice Called by the registry coordinator to update an operator's stake for one
     * or more quorums.
     *
     * If the operator no longer has the minimum stake required for a quorum, they are
     * added to the
     * @return A bitmap of quorums where the operator no longer meets the minimum stake
     * and should be deregistered.
     */
    function updateOperatorStake(
        address operator, 
        bytes32 operatorId, 
        bytes calldata quorumNumbers
    ) external returns (uint192);
}

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

pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";

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

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

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

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

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

pragma solidity ^0.8.2;

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

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

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

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

    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts. Equivalent to `reinitializer(1)`.
     */
    modifier initializer() {
        bool isTopLevelCall = !_initializing;
        require(
            (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
            "Initializable: contract is already initialized"
        );
        _initialized = 1;
        if (isTopLevelCall) {
            _initializing = true;
        }
        _;
        if (isTopLevelCall) {
            _initializing = false;
            emit Initialized(1);
        }
    }

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

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

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

// SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.5.0;

import "./IStrategy.sol";
import "./ISignatureUtils.sol";

/**
 * @title DelegationManager
 * @author Layr Labs, Inc.
 * @notice Terms of Service: https://docs.eigenlayer.xyz/overview/terms-of-service
 * @notice  This is the contract for delegation in EigenLayer. The main functionalities of this contract are
 * - enabling anyone to register as an operator in EigenLayer
 * - allowing operators to specify parameters related to stakers who delegate to them
 * - enabling any staker to delegate its stake to the operator of its choice (a given staker can only delegate to a single operator at a time)
 * - enabling a staker to undelegate its assets from the operator it is delegated to (performed as part of the withdrawal process, initiated through the StrategyManager)
 */
interface IDelegationManager is ISignatureUtils {
    // @notice Struct used for storing information about a single operator who has registered with EigenLayer
    struct OperatorDetails {
        /// @notice DEPRECATED -- this field is no longer used, payments are handled in PaymentCoordinator.sol
        address __deprecated_earningsReceiver;
        /**
         * @notice Address to verify signatures when a staker wishes to delegate to the operator, as well as controlling "forced undelegations".
         * @dev Signature verification follows these rules:
         * 1) If this address is left as address(0), then any staker will be free to delegate to the operator, i.e. no signature verification will be performed.
         * 2) If this address is an EOA (i.e. it has no code), then we follow standard ECDSA signature verification for delegations to the operator.
         * 3) If this address is a contract (i.e. it has code) then we forward a call to the contract and verify that it returns the correct EIP-1271 "magic value".
         */
        address delegationApprover;
        /**
         * @notice A minimum delay -- measured in blocks -- enforced between:
         * 1) the operator signalling their intent to register for a service, via calling `Slasher.optIntoSlashing`
         * and
         * 2) the operator completing registration for the service, via the service ultimately calling `Slasher.recordFirstStakeUpdate`
         * @dev note that for a specific operator, this value *cannot decrease*, i.e. if the operator wishes to modify their OperatorDetails,
         * then they are only allowed to either increase this value or keep it the same.
         */
        uint32 stakerOptOutWindowBlocks;
    }

    /**
     * @notice Abstract struct used in calculating an EIP712 signature for a staker to approve that they (the staker themselves) delegate to a specific operator.
     * @dev Used in computing the `STAKER_DELEGATION_TYPEHASH` and as a reference in the computation of the stakerDigestHash in the `delegateToBySignature` function.
     */
    struct StakerDelegation {
        // the staker who is delegating
        address staker;
        // the operator being delegated to
        address operator;
        // the staker's nonce
        uint256 nonce;
        // the expiration timestamp (UTC) of the signature
        uint256 expiry;
    }

    /**
     * @notice Abstract struct used in calculating an EIP712 signature for an operator's delegationApprover to approve that a specific staker delegate to the operator.
     * @dev Used in computing the `DELEGATION_APPROVAL_TYPEHASH` and as a reference in the computation of the approverDigestHash in the `_delegate` function.
     */
    struct DelegationApproval {
        // the staker who is delegating
        address staker;
        // the operator being delegated to
        address operator;
        // the operator's provided salt
        bytes32 salt;
        // the expiration timestamp (UTC) of the signature
        uint256 expiry;
    }

    /**
     * Struct type used to specify an existing queued withdrawal. Rather than storing the entire struct, only a hash is stored.
     * In functions that operate on existing queued withdrawals -- e.g. completeQueuedWithdrawal`, the data is resubmitted and the hash of the submitted
     * data is computed by `calculateWithdrawalRoot` and checked against the stored hash in order to confirm the integrity of the submitted data.
     */
    struct Withdrawal {
        // The address that originated the Withdrawal
        address staker;
        // The address that the staker was delegated to at the time that the Withdrawal was created
        address delegatedTo;
        // The address that can complete the Withdrawal + will receive funds when completing the withdrawal
        address withdrawer;
        // Nonce used to guarantee that otherwise identical withdrawals have unique hashes
        uint256 nonce;
        // Block number when the Withdrawal was created
        uint32 startBlock;
        // Array of strategies that the Withdrawal contains
        IStrategy[] strategies;
        // Array containing the amount of shares in each Strategy in the `strategies` array
        uint256[] shares;
    }

    struct QueuedWithdrawalParams {
        // Array of strategies that the QueuedWithdrawal contains
        IStrategy[] strategies;
        // Array containing the amount of shares in each Strategy in the `strategies` array
        uint256[] shares;
        // The address of the withdrawer
        address withdrawer;
    }

    // @notice Emitted when a new operator registers in EigenLayer and provides their OperatorDetails.
    event OperatorRegistered(address indexed operator, OperatorDetails operatorDetails);

    /// @notice Emitted when an operator updates their OperatorDetails to @param newOperatorDetails
    event OperatorDetailsModified(address indexed operator, OperatorDetails newOperatorDetails);

    /**
     * @notice Emitted when @param operator indicates that they are updating their MetadataURI string
     * @dev Note that these strings are *never stored in storage* and are instead purely emitted in events for off-chain indexing
     */
    event OperatorMetadataURIUpdated(address indexed operator, string metadataURI);

    /// @notice Emitted whenever an operator's shares are increased for a given strategy. Note that shares is the delta in the operator's shares.
    event OperatorSharesIncreased(address indexed operator, address staker, IStrategy strategy, uint256 shares);

    /// @notice Emitted whenever an operator's shares are decreased for a given strategy. Note that shares is the delta in the operator's shares.
    event OperatorSharesDecreased(address indexed operator, address staker, IStrategy strategy, uint256 shares);

    /// @notice Emitted when @param staker delegates to @param operator.
    event StakerDelegated(address indexed staker, address indexed operator);

    /// @notice Emitted when @param staker undelegates from @param operator.
    event StakerUndelegated(address indexed staker, address indexed operator);

    /// @notice Emitted when @param staker is undelegated via a call not originating from the staker themself
    event StakerForceUndelegated(address indexed staker, address indexed operator);

    /**
     * @notice Emitted when a new withdrawal is queued.
     * @param withdrawalRoot Is the hash of the `withdrawal`.
     * @param withdrawal Is the withdrawal itself.
     */
    event WithdrawalQueued(bytes32 withdrawalRoot, Withdrawal withdrawal);

    /// @notice Emitted when a queued withdrawal is completed
    event WithdrawalCompleted(bytes32 withdrawalRoot);

    /// @notice Emitted when the `minWithdrawalDelayBlocks` variable is modified from `previousValue` to `newValue`.
    event MinWithdrawalDelayBlocksSet(uint256 previousValue, uint256 newValue);

    /// @notice Emitted when the `strategyWithdrawalDelayBlocks` variable is modified from `previousValue` to `newValue`.
    event StrategyWithdrawalDelayBlocksSet(IStrategy strategy, uint256 previousValue, uint256 newValue);

    /**
     * @notice Registers the caller as an operator in EigenLayer.
     * @param registeringOperatorDetails is the `OperatorDetails` for the operator.
     * @param metadataURI is a URI for the operator's metadata, i.e. a link providing more details on the operator.
     *
     * @dev Once an operator is registered, they cannot 'deregister' as an operator, and they will forever be considered "delegated to themself".
     * @dev This function will revert if the caller is already delegated to an operator.
     * @dev Note that the `metadataURI` is *never stored * and is only emitted in the `OperatorMetadataURIUpdated` event
     */
    function registerAsOperator(
        OperatorDetails calldata registeringOperatorDetails,
        string calldata metadataURI
    ) external;

    /**
     * @notice Updates an operator's stored `OperatorDetails`.
     * @param newOperatorDetails is the updated `OperatorDetails` for the operator, to replace their current OperatorDetails`.
     *
     * @dev The caller must have previously registered as an operator in EigenLayer.
     */
    function modifyOperatorDetails(OperatorDetails calldata newOperatorDetails) external;

    /**
     * @notice Called by an operator to emit an `OperatorMetadataURIUpdated` event indicating the information has updated.
     * @param metadataURI The URI for metadata associated with an operator
     * @dev Note that the `metadataURI` is *never stored * and is only emitted in the `OperatorMetadataURIUpdated` event
     */
    function updateOperatorMetadataURI(string calldata metadataURI) external;

    /**
     * @notice Caller delegates their stake to an operator.
     * @param operator The account (`msg.sender`) is delegating its assets to for use in serving applications built on EigenLayer.
     * @param approverSignatureAndExpiry Verifies the operator approves of this delegation
     * @param approverSalt A unique single use value tied to an individual signature.
     * @dev The approverSignatureAndExpiry is used in the event that:
     *          1) the operator's `delegationApprover` address is set to a non-zero value.
     *                  AND
     *          2) neither the operator nor their `delegationApprover` is the `msg.sender`, since in the event that the operator
     *             or their delegationApprover is the `msg.sender`, then approval is assumed.
     * @dev In the event that `approverSignatureAndExpiry` is not checked, its content is ignored entirely; it's recommended to use an empty input
     * in this case to save on complexity + gas costs
     */
    function delegateTo(
        address operator,
        SignatureWithExpiry memory approverSignatureAndExpiry,
        bytes32 approverSalt
    ) external;

    /**
     * @notice Caller delegates a staker's stake to an operator with valid signatures from both parties.
     * @param staker The account delegating stake to an `operator` account
     * @param operator The account (`staker`) is delegating its assets to for use in serving applications built on EigenLayer.
     * @param stakerSignatureAndExpiry Signed data from the staker authorizing delegating stake to an operator
     * @param approverSignatureAndExpiry is a parameter that will be used for verifying that the operator approves of this delegation action in the event that:
     * @param approverSalt Is a salt used to help guarantee signature uniqueness. Each salt can only be used once by a given approver.
     *
     * @dev If `staker` is an EOA, then `stakerSignature` is verified to be a valid ECDSA stakerSignature from `staker`, indicating their intention for this action.
     * @dev If `staker` is a contract, then `stakerSignature` will be checked according to EIP-1271.
     * @dev the operator's `delegationApprover` address is set to a non-zero value.
     * @dev neither the operator nor their `delegationApprover` is the `msg.sender`, since in the event that the operator or their delegationApprover
     * is the `msg.sender`, then approval is assumed.
     * @dev This function will revert if the current `block.timestamp` is equal to or exceeds the expiry
     * @dev In the case that `approverSignatureAndExpiry` is not checked, its content is ignored entirely; it's recommended to use an empty input
     * in this case to save on complexity + gas costs
     */
    function delegateToBySignature(
        address staker,
        address operator,
        SignatureWithExpiry memory stakerSignatureAndExpiry,
        SignatureWithExpiry memory approverSignatureAndExpiry,
        bytes32 approverSalt
    ) external;

    /**
     * @notice Undelegates the staker from the operator who they are delegated to. Puts the staker into the "undelegation limbo" mode of the EigenPodManager
     * and queues a withdrawal of all of the staker's shares in the StrategyManager (to the staker), if necessary.
     * @param staker The account to be undelegated.
     * @return withdrawalRoot The root of the newly queued withdrawal, if a withdrawal was queued. Otherwise just bytes32(0).
     *
     * @dev Reverts if the `staker` is also an operator, since operators are not allowed to undelegate from themselves.
     * @dev Reverts if the caller is not the staker, nor the operator who the staker is delegated to, nor the operator's specified "delegationApprover"
     * @dev Reverts if the `staker` is already undelegated.
     */
    function undelegate(address staker) external returns (bytes32[] memory withdrawalRoot);

    /**
     * Allows a staker to withdraw some shares. Withdrawn shares/strategies are immediately removed
     * from the staker. If the staker is delegated, withdrawn shares/strategies are also removed from
     * their operator.
     *
     * All withdrawn shares/strategies are placed in a queue and can be fully withdrawn after a delay.
     */
    function queueWithdrawals(QueuedWithdrawalParams[] calldata queuedWithdrawalParams)
        external
        returns (bytes32[] memory);

    /**
     * @notice Used to complete the specified `withdrawal`. The caller must match `withdrawal.withdrawer`
     * @param withdrawal The Withdrawal to complete.
     * @param tokens Array in which the i-th entry specifies the `token` input to the 'withdraw' function of the i-th Strategy in the `withdrawal.strategies` array.
     * This input can be provided with zero length if `receiveAsTokens` is set to 'false' (since in that case, this input will be unused)
     * @param middlewareTimesIndex is the index in the operator that the staker who triggered the withdrawal was delegated to's middleware times array
     * @param receiveAsTokens If true, the shares specified in the withdrawal will be withdrawn from the specified strategies themselves
     * and sent to the caller, through calls to `withdrawal.strategies[i].withdraw`. If false, then the shares in the specified strategies
     * will simply be transferred to the caller directly.
     * @dev middlewareTimesIndex is unused, but will be used in the Slasher eventually
     * @dev beaconChainETHStrategy shares are non-transferrable, so if `receiveAsTokens = false` and `withdrawal.withdrawer != withdrawal.staker`, note that
     * any beaconChainETHStrategy shares in the `withdrawal` will be _returned to the staker_, rather than transferred to the withdrawer, unlike shares in
     * any other strategies, which will be transferred to the withdrawer.
     */
    function completeQueuedWithdrawal(
        Withdrawal calldata withdrawal,
        IERC20[] calldata tokens,
        uint256 middlewareTimesIndex,
        bool receiveAsTokens
    ) external;

    /**
     * @notice Array-ified version of `completeQueuedWithdrawal`.
     * Used to complete the specified `withdrawals`. The function caller must match `withdrawals[...].withdrawer`
     * @param withdrawals The Withdrawals to complete.
     * @param tokens Array of tokens for each Withdrawal. See `completeQueuedWithdrawal` for the usage of a single array.
     * @param middlewareTimesIndexes One index to reference per Withdrawal. See `completeQueuedWithdrawal` for the usage of a single index.
     * @param receiveAsTokens Whether or not to complete each withdrawal as tokens. See `completeQueuedWithdrawal` for the usage of a single boolean.
     * @dev See `completeQueuedWithdrawal` for relevant dev tags
     */
    function completeQueuedWithdrawals(
        Withdrawal[] calldata withdrawals,
        IERC20[][] calldata tokens,
        uint256[] calldata middlewareTimesIndexes,
        bool[] calldata receiveAsTokens
    ) external;

    /**
     * @notice Increases a staker's delegated share balance in a strategy.
     * @param staker The address to increase the delegated shares for their operator.
     * @param strategy The strategy in which to increase the delegated shares.
     * @param shares The number of shares to increase.
     *
     * @dev *If the staker is actively delegated*, then increases the `staker`'s delegated shares in `strategy` by `shares`. Otherwise does nothing.
     * @dev Callable only by the StrategyManager or EigenPodManager.
     */
    function increaseDelegatedShares(address staker, IStrategy strategy, uint256 shares) external;

    /**
     * @notice Decreases a staker's delegated share balance in a strategy.
     * @param staker The address to increase the delegated shares for their operator.
     * @param strategy The strategy in which to decrease the delegated shares.
     * @param shares The number of shares to decrease.
     *
     * @dev *If the staker is actively delegated*, then decreases the `staker`'s delegated shares in `strategy` by `shares`. Otherwise does nothing.
     * @dev Callable only by the StrategyManager or EigenPodManager.
     */
    function decreaseDelegatedShares(address staker, IStrategy strategy, uint256 shares) external;

    /**
     * @notice Owner-only function for modifying the value of the `minWithdrawalDelayBlocks` variable.
     * @param newMinWithdrawalDelayBlocks new value of `minWithdrawalDelayBlocks`.
     */
    function setMinWithdrawalDelayBlocks(uint256 newMinWithdrawalDelayBlocks) external; 

    /**
     * @notice Called by owner to set the minimum withdrawal delay blocks for each passed in strategy
     * Note that the min number of blocks to complete a withdrawal of a strategy is
     * MAX(minWithdrawalDelayBlocks, strategyWithdrawalDelayBlocks[strategy])
     * @param strategies The strategies to set the minimum withdrawal delay blocks for
     * @param withdrawalDelayBlocks The minimum withdrawal delay blocks to set for each strategy
     */
    function setStrategyWithdrawalDelayBlocks(IStrategy[] calldata strategies, uint256[] calldata withdrawalDelayBlocks) external;

    /**
     * @notice returns the address of the operator that `staker` is delegated to.
     * @notice Mapping: staker => operator whom the staker is currently delegated to.
     * @dev Note that returning address(0) indicates that the staker is not actively delegated to any operator.
     */
    function delegatedTo(address staker) external view returns (address);

    /**
     * @notice Returns the OperatorDetails struct associated with an `operator`.
     */
    function operatorDetails(address operator) external view returns (OperatorDetails memory);

    /**
     * @notice Returns the delegationApprover account for an operator
     */
    function delegationApprover(address operator) external view returns (address);

    /**
     * @notice Returns the stakerOptOutWindowBlocks for an operator
     */
    function stakerOptOutWindowBlocks(address operator) external view returns (uint256);

    /**
     * @notice Given array of strategies, returns array of shares for the operator
     */
    function getOperatorShares(
        address operator,
        IStrategy[] memory strategies
    ) external view returns (uint256[] memory);

    /**
     * @notice Given a list of strategies, return the minimum number of blocks that must pass to withdraw
     * from all the inputted strategies. Return value is >= minWithdrawalDelayBlocks as this is the global min withdrawal delay.
     * @param strategies The strategies to check withdrawal delays for
     */
    function getWithdrawalDelay(IStrategy[] calldata strategies) external view returns (uint256);

    /**
     * @notice returns the total number of shares in `strategy` that are delegated to `operator`.
     * @notice Mapping: operator => strategy => total number of shares in the strategy delegated to the operator.
     * @dev By design, the following invariant should hold for each Strategy:
     * (operator's shares in delegation manager) = sum (shares above zero of all stakers delegated to operator)
     * = sum (delegateable shares of all stakers delegated to the operator)
     */
    function operatorShares(address operator, IStrategy strategy) external view returns (uint256);


    /**
     * @notice Returns the number of actively-delegatable shares a staker has across all strategies.
     * @dev Returns two empty arrays in the case that the Staker has no actively-delegateable shares.
     */
    function getDelegatableShares(address staker) external view returns (IStrategy[] memory, uint256[] memory);

    /**
     * @notice Returns 'true' if `staker` *is* actively delegated, and 'false' otherwise.
     */
    function isDelegated(address staker) external view returns (bool);

    /**
     * @notice Returns true is an operator has previously registered for delegation.
     */
    function isOperator(address operator) external view returns (bool);

    /// @notice Mapping: staker => number of signed delegation nonces (used in `delegateToBySignature`) from the staker that the contract has already checked
    function stakerNonce(address staker) external view returns (uint256);

    /**
     * @notice Mapping: delegationApprover => 32-byte salt => whether or not the salt has already been used by the delegationApprover.
     * @dev Salts are used in the `delegateTo` and `delegateToBySignature` functions. Note that these functions only process the delegationApprover's
     * signature + the provided salt if the operator being delegated to has specified a nonzero address as their `delegationApprover`.
     */
    function delegationApproverSaltIsSpent(address _delegationApprover, bytes32 salt) external view returns (bool);

    /**
     * @notice Minimum delay enforced by this contract for completing queued withdrawals. Measured in blocks, and adjustable by this contract's owner,
     * up to a maximum of `MAX_WITHDRAWAL_DELAY_BLOCKS`. Minimum value is 0 (i.e. no delay enforced).
     * Note that strategies each have a separate withdrawal delay, which can be greater than this value. So the minimum number of blocks that must pass
     * to withdraw a strategy is MAX(minWithdrawalDelayBlocks, strategyWithdrawalDelayBlocks[strategy])
     */
    function minWithdrawalDelayBlocks() external view returns (uint256);

    /**
     * @notice Minimum delay enforced by this contract per Strategy for completing queued withdrawals. Measured in blocks, and adjustable by this contract's owner,
     * up to a maximum of `MAX_WITHDRAWAL_DELAY_BLOCKS`. Minimum value is 0 (i.e. no delay enforced).
     */
    function strategyWithdrawalDelayBlocks(IStrategy strategy) external view returns (uint256);

    /// @notice return address of the beaconChainETHStrategy
    function beaconChainETHStrategy() external view returns (IStrategy);

    /**
     * @notice Calculates the digestHash for a `staker` to sign to delegate to an `operator`
     * @param staker The signing staker
     * @param operator The operator who is being delegated to
     * @param expiry The desired expiry time of the staker's signature
     */
    function calculateCurrentStakerDelegationDigestHash(
        address staker,
        address operator,
        uint256 expiry
    ) external view returns (bytes32);

    /**
     * @notice Calculates the digest hash to be signed and used in the `delegateToBySignature` function
     * @param staker The signing staker
     * @param _stakerNonce The nonce of the staker. In practice we use the staker's current nonce, stored at `stakerNonce[staker]`
     * @param operator The operator who is being delegated to
     * @param expiry The desired expiry time of the staker's signature
     */
    function calculateStakerDelegationDigestHash(
        address staker,
        uint256 _stakerNonce,
        address operator,
        uint256 expiry
    ) external view returns (bytes32);

    /**
     * @notice Calculates the digest hash to be signed by the operator's delegationApprove and used in the `delegateTo` and `delegateToBySignature` functions.
     * @param staker The account delegating their stake
     * @param operator The account receiving delegated stake
     * @param _delegationApprover the operator's `delegationApprover` who will be signing the delegationHash (in general)
     * @param approverSalt A unique and single use value associated with the approver signature.
     * @param expiry Time after which the approver's signature becomes invalid
     */
    function calculateDelegationApprovalDigestHash(
        address staker,
        address operator,
        address _delegationApprover,
        bytes32 approverSalt,
        uint256 expiry
    ) external view returns (bytes32);

    /// @notice The EIP-712 typehash for the contract's domain
    function DOMAIN_TYPEHASH() external view returns (bytes32);

    /// @notice The EIP-712 typehash for the StakerDelegation struct used by the contract
    function STAKER_DELEGATION_TYPEHASH() external view returns (bytes32);

    /// @notice The EIP-712 typehash for the DelegationApproval struct used by the contract
    function DELEGATION_APPROVAL_TYPEHASH() external view returns (bytes32);

    /**
     * @notice Getter function for the current EIP-712 domain separator for this contract.
     *
     * @dev The domain separator will change in the event of a fork that changes the ChainID.
     * @dev By introducing a domain separator the DApp developers are guaranteed that there can be no signature collision.
     * for more detailed information please read EIP-712.
     */
    function domainSeparator() external view returns (bytes32);

    /// @notice Mapping: staker => cumulative number of queued withdrawals they have ever initiated.
    /// @dev This only increments (doesn't decrement), and is used to help ensure that otherwise identical withdrawals have unique hashes.
    function cumulativeWithdrawalsQueued(address staker) external view returns (uint256);

    /// @notice Returns the keccak256 hash of `withdrawal`.
    function calculateWithdrawalRoot(Withdrawal memory withdrawal) external pure returns (bytes32);
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.12;

import {IRegistry} from "./IRegistry.sol";

import {BN254} from "../libraries/BN254.sol";

/**
 * @title Minimal interface for a registry that keeps track of aggregate operator public keys across many quorums.
 * @author Layr Labs, Inc.
 */
interface IBLSApkRegistry is IRegistry {
    // STRUCTS
    /// @notice Data structure used to track the history of the Aggregate Public Key of all operators
    struct ApkUpdate {
        // first 24 bytes of keccak256(apk_x0, apk_x1, apk_y0, apk_y1)
        bytes24 apkHash;
        // block number at which the update occurred
        uint32 updateBlockNumber;
        // block number at which the next update occurred
        uint32 nextUpdateBlockNumber;
    }

    /**
     * @notice Struct used when registering a new public key
     * @param pubkeyRegistrationSignature is the registration message signed by the private key of the operator
     * @param pubkeyG1 is the corresponding G1 public key of the operator 
     * @param pubkeyG2 is the corresponding G2 public key of the operator
     */     
    struct PubkeyRegistrationParams {
        BN254.G1Point pubkeyRegistrationSignature;
        BN254.G1Point pubkeyG1;
        BN254.G2Point pubkeyG2;
    }

    // EVENTS
    /// @notice Emitted when `operator` registers with the public keys `pubkeyG1` and `pubkeyG2`.
    event NewPubkeyRegistration(address indexed operator, BN254.G1Point pubkeyG1, BN254.G2Point pubkeyG2);

    // @notice Emitted when a new operator pubkey is registered for a set of quorums
    event OperatorAddedToQuorums(
        address operator,
        bytes32 operatorId,
        bytes quorumNumbers
    );

    // @notice Emitted when an operator pubkey is removed from a set of quorums
    event OperatorRemovedFromQuorums(
        address operator, 
        bytes32 operatorId,
        bytes quorumNumbers
    );

    /**
     * @notice Registers the `operator`'s pubkey for the specified `quorumNumbers`.
     * @param operator The address of the operator to register.
     * @param quorumNumbers The quorum numbers the operator is registering for, where each byte is an 8 bit integer quorumNumber.
     * @dev access restricted to the RegistryCoordinator
     * @dev Preconditions (these are assumed, not validated in this contract):
     *         1) `quorumNumbers` has no duplicates
     *         2) `quorumNumbers.length` != 0
     *         3) `quorumNumbers` is ordered in ascending order
     *         4) the operator is not already registered
     */
    function registerOperator(address operator, bytes calldata quorumNumbers) external;

    /**
     * @notice Deregisters the `operator`'s pubkey for the specified `quorumNumbers`.
     * @param operator The address of the operator to deregister.
     * @param quorumNumbers The quorum numbers the operator is deregistering from, where each byte is an 8 bit integer quorumNumber.
     * @dev access restricted to the RegistryCoordinator
     * @dev Preconditions (these are assumed, not validated in this contract):
     *         1) `quorumNumbers` has no duplicates
     *         2) `quorumNumbers.length` != 0
     *         3) `quorumNumbers` is ordered in ascending order
     *         4) the operator is not already deregistered
     *         5) `quorumNumbers` is a subset of the quorumNumbers that the operator is registered for
     */ 
    function deregisterOperator(address operator, bytes calldata quorumNumbers) external;
    
    /**
     * @notice Initializes a new quorum by pushing its first apk update
     * @param quorumNumber The number of the new quorum
     */
    function initializeQuorum(uint8 quorumNumber) external;

    /**
     * @notice mapping from operator address to pubkey hash.
     * Returns *zero* if the `operator` has never registered, and otherwise returns the hash of the public key of the operator.
     */
    function operatorToPubkeyHash(address operator) external view returns (bytes32);

    /**
     * @notice mapping from pubkey hash to operator address.
     * Returns *zero* if no operator has ever registered the public key corresponding to `pubkeyHash`,
     * and otherwise returns the (unique) registered operator who owns the BLS public key that is the preimage of `pubkeyHash`.
     */
    function pubkeyHashToOperator(bytes32 pubkeyHash) external view returns (address);

    /**
     * @notice Called by the RegistryCoordinator register an operator as the owner of a BLS public key.
     * @param operator is the operator for whom the key is being registered
     * @param params contains the G1 & G2 public keys of the operator, and a signature proving their ownership
     * @param pubkeyRegistrationMessageHash is a hash that the operator must sign to prove key ownership
     */
    function registerBLSPublicKey(
        address operator,
        PubkeyRegistrationParams calldata params,
        BN254.G1Point calldata pubkeyRegistrationMessageHash
    ) external returns (bytes32 operatorId);

    /**
     * @notice Returns the pubkey and pubkey hash of an operator
     * @dev Reverts if the operator has not registered a valid pubkey
     */
    function getRegisteredPubkey(address operator) external view returns (BN254.G1Point memory, bytes32);

    /// @notice Returns the current APK for the provided `quorumNumber `
    function getApk(uint8 quorumNumber) external view returns (BN254.G1Point memory);

    /// @notice Returns the index of the quorumApk index at `blockNumber` for the provided `quorumNumber`
    function getApkIndicesAtBlockNumber(bytes calldata quorumNumbers, uint256 blockNumber) external view returns(uint32[] memory);

    /// @notice Returns the `ApkUpdate` struct at `index` in the list of APK updates for the `quorumNumber`
    function getApkUpdateAtIndex(uint8 quorumNumber, uint256 index) external view returns (ApkUpdate memory);

    /// @notice Returns the operator address for the given `pubkeyHash`
    function getOperatorFromPubkeyHash(bytes32 pubkeyHash) external view returns (address);

    /**
     * @notice get 24 byte hash of the apk of `quorumNumber` at `blockNumber` using the provided `index`;
     * called by checkSignatures in BLSSignatureChecker.sol.
     * @param quorumNumber is the quorum whose ApkHash is being retrieved
     * @param blockNumber is the number of the block for which the latest ApkHash will be retrieved
     * @param index is the index of the apkUpdate being retrieved from the list of quorum apkUpdates in storage
     */
    function getApkHashAtBlockNumberAndIndex(uint8 quorumNumber, uint32 blockNumber, uint256 index) external view returns (bytes24);

    /// @notice returns the ID used to identify the `operator` within this AVS.
    /// @dev Returns zero in the event that the `operator` has never registered for the AVS
    function getOperatorId(address operator) external view returns (bytes32);
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.12;

import {IRegistry} from "./IRegistry.sol";

/**
 * @title Interface for a `Registry`-type contract that keeps track of an ordered list of operators for up to 256 quorums.
 * @author Layr Labs, Inc.
 */
interface IIndexRegistry is IRegistry {
    // EVENTS
    
    // emitted when an operator's index in the ordered operator list for the quorum with number `quorumNumber` is updated
    event QuorumIndexUpdate(bytes32 indexed operatorId, uint8 quorumNumber, uint32 newOperatorIndex);

    // DATA STRUCTURES

    // struct used to give definitive ordering to operators at each blockNumber. 
    struct OperatorUpdate {
        // blockNumber number from which `operatorIndex` was the operators index
        // the operator's index is the first entry such that `blockNumber >= entry.fromBlockNumber`
        uint32 fromBlockNumber;
        // the operator at this index
        bytes32 operatorId;
    }

    // struct used to denote the number of operators in a quorum at a given blockNumber
    struct QuorumUpdate {
        // The total number of operators at a `blockNumber` is the first entry such that `blockNumber >= entry.fromBlockNumber`
        uint32 fromBlockNumber;
        // The number of operators at `fromBlockNumber`
        uint32 numOperators;
    }

    /**
     * @notice Registers the operator with the specified `operatorId` for the quorums specified by `quorumNumbers`.
     * @param operatorId is the id of the operator that is being registered
     * @param quorumNumbers is the quorum numbers the operator is registered for
     * @return numOperatorsPerQuorum is a list of the number of operators (including the registering operator) in each of the quorums the operator is registered for
     * @dev access restricted to the RegistryCoordinator
     * @dev Preconditions (these are assumed, not validated in this contract):
     *         1) `quorumNumbers` has no duplicates
     *         2) `quorumNumbers.length` != 0
     *         3) `quorumNumbers` is ordered in ascending order
     *         4) the operator is not already registered
     */
    function registerOperator(bytes32 operatorId, bytes calldata quorumNumbers) external returns(uint32[] memory);

    /**
     * @notice Deregisters the operator with the specified `operatorId` for the quorums specified by `quorumNumbers`.
     * @param operatorId is the id of the operator that is being deregistered
     * @param quorumNumbers is the quorum numbers the operator is deregistered for
     * @dev access restricted to the RegistryCoordinator
     * @dev Preconditions (these are assumed, not validated in this contract):
     *         1) `quorumNumbers` has no duplicates
     *         2) `quorumNumbers.length` != 0
     *         3) `quorumNumbers` is ordered in ascending order
     *         4) the operator is not already deregistered
     *         5) `quorumNumbers` is a subset of the quorumNumbers that the operator is registered for
     */
    function deregisterOperator(bytes32 operatorId, bytes calldata quorumNumbers) external;

    /**
     * @notice Initialize a quorum by pushing its first quorum update
     * @param quorumNumber The number of the new quorum
     */
    function initializeQuorum(uint8 quorumNumber) external;

    /// @notice Returns the OperatorUpdate entry for the specified `operatorIndex` and `quorumNumber` at the specified `arrayIndex`
    function getOperatorUpdateAtIndex(
        uint8 quorumNumber,
        uint32 operatorIndex,
        uint32 arrayIndex
    ) external view returns (OperatorUpdate memory);

    /// @notice Returns the QuorumUpdate entry for the specified `quorumNumber` at the specified `quorumIndex`
    function getQuorumUpdateAtIndex(uint8 quorumNumber, uint32 quorumIndex) external view returns (QuorumUpdate memory);

    /// @notice Returns the most recent OperatorUpdate entry for the specified quorumNumber and operatorIndex
    function getLatestOperatorUpdate(uint8 quorumNumber, uint32 operatorIndex) external view returns (OperatorUpdate memory);

    /// @notice Returns the most recent QuorumUpdate entry for the specified quorumNumber
    function getLatestQuorumUpdate(uint8 quorumNumber) external view returns (QuorumUpdate memory);

    /// @notice Returns the current number of operators of this service for `quorumNumber`.
    function totalOperatorsForQuorum(uint8 quorumNumber) external view returns (uint32);

    /// @notice Returns an ordered list of operators of the services for the given `quorumNumber` at the given `blockNumber`
    function getOperatorListAtBlockNumber(uint8 quorumNumber, uint32 blockNumber) external view returns (bytes32[] memory);
}

// SPDX-License-Identifier: MIT
// several functions are taken or adapted from https://github.com/HarryR/solcrypto/blob/master/contracts/altbn128.sol (MIT license):
// Copyright 2017 Christian Reitwiessner
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.

// The remainder of the code in this library is written by LayrLabs Inc. and is also under an MIT license

pragma solidity ^0.8.12;

/**
 * @title Library for operations on the BN254 elliptic curve.
 * @author Layr Labs, Inc.
 * @notice Terms of Service: https://docs.eigenlayer.xyz/overview/terms-of-service
 * @notice Contains BN254 parameters, common operations (addition, scalar mul, pairing), and BLS signature functionality.
 */
library BN254 {
    // modulus for the underlying field F_p of the elliptic curve
    uint256 internal constant FP_MODULUS =
        21888242871839275222246405745257275088696311157297823662689037894645226208583;
    // modulus for the underlying field F_r of the elliptic curve
    uint256 internal constant FR_MODULUS =
        21888242871839275222246405745257275088548364400416034343698204186575808495617;

    struct G1Point {
        uint256 X;
        uint256 Y;
    }

    // Encoding of field elements is: X[1] * i + X[0]
    struct G2Point {
        uint256[2] X;
        uint256[2] Y;
    }

    function generatorG1() internal pure returns (G1Point memory) {
        return G1Point(1, 2);
    }

    // generator of group G2
    /// @dev Generator point in F_q2 is of the form: (x0 + ix1, y0 + iy1).
    uint256 internal constant G2x1 = 11559732032986387107991004021392285783925812861821192530917403151452391805634;
    uint256 internal constant G2x0 = 10857046999023057135944570762232829481370756359578518086990519993285655852781;
    uint256 internal constant G2y1 = 4082367875863433681332203403145435568316851327593401208105741076214120093531;
    uint256 internal constant G2y0 = 8495653923123431417604973247489272438418190587263600148770280649306958101930;

    /// @notice returns the G2 generator
    /// @dev mind the ordering of the 1s and 0s!
    ///      this is because of the (unknown to us) convention used in the bn254 pairing precompile contract
    ///      "Elements a * i + b of F_p^2 are encoded as two elements of F_p, (a, b)."
    ///      https://github.com/ethereum/EIPs/blob/master/EIPS/eip-197.md#encoding
    function generatorG2() internal pure returns (G2Point memory) {
        return G2Point([G2x1, G2x0], [G2y1, G2y0]);
    }

    // negation of the generator of group G2
    /// @dev Generator point in F_q2 is of the form: (x0 + ix1, y0 + iy1).
    uint256 internal constant nG2x1 = 11559732032986387107991004021392285783925812861821192530917403151452391805634;
    uint256 internal constant nG2x0 = 10857046999023057135944570762232829481370756359578518086990519993285655852781;
    uint256 internal constant nG2y1 = 17805874995975841540914202342111839520379459829704422454583296818431106115052;
    uint256 internal constant nG2y0 = 13392588948715843804641432497768002650278120570034223513918757245338268106653;

    function negGeneratorG2() internal pure returns (G2Point memory) {
        return G2Point([nG2x1, nG2x0], [nG2y1, nG2y0]);
    }

    bytes32 internal constant powersOfTauMerkleRoot =
        0x22c998e49752bbb1918ba87d6d59dd0e83620a311ba91dd4b2cc84990b31b56f;

    /**
     * @param p Some point in G1.
     * @return The negation of `p`, i.e. p.plus(p.negate()) should be zero.
     */
    function negate(G1Point memory p) internal pure returns (G1Point memory) {
        // The prime q in the base field F_q for G1
        if (p.X == 0 && p.Y == 0) {
            return G1Point(0, 0);
        } else {
            return G1Point(p.X, FP_MODULUS - (p.Y % FP_MODULUS));
        }
    }

    /**
     * @return r the sum of two points of G1
     */
    function plus(G1Point memory p1, G1Point memory p2) internal view returns (G1Point memory r) {
        uint256[4] memory input;
        input[0] = p1.X;
        input[1] = p1.Y;
        input[2] = p2.X;
        input[3] = p2.Y;
        bool success;

        // solium-disable-next-line security/no-inline-assembly
        assembly {
            success := staticcall(sub(gas(), 2000), 6, input, 0x80, r, 0x40)
            // Use "invalid" to make gas estimation work
            switch success
            case 0 {
                invalid()
            }
        }

        require(success, "ec-add-failed");
    }

    /**
     * @notice an optimized ecMul implementation that takes O(log_2(s)) ecAdds
     * @param p the point to multiply
     * @param s the scalar to multiply by
     * @dev this function is only safe to use if the scalar is 9 bits or less
     */ 
    function scalar_mul_tiny(BN254.G1Point memory p, uint16 s) internal view returns (BN254.G1Point memory) {
        require(s < 2**9, "scalar-too-large");

        // if s is 1 return p
        if(s == 1) {
            return p;
        }

        // the accumulated product to return
        BN254.G1Point memory acc = BN254.G1Point(0, 0);
        // the 2^n*p to add to the accumulated product in each iteration
        BN254.G1Point memory p2n = p;
        // value of most significant bit
        uint16 m = 1;
        // index of most significant bit
        uint8 i = 0;

        //loop until we reach the most significant bit
        while(s >= m){
            unchecked {
                // if the  current bit is 1, add the 2^n*p to the accumulated product
                if ((s >> i) & 1 == 1) {
                    acc = plus(acc, p2n);
                }
                // double the 2^n*p for the next iteration
                p2n = plus(p2n, p2n);

                // increment the index and double the value of the most significant bit
                m <<= 1;
                ++i;
            }
        }
        
        // return the accumulated product
        return acc;
    }

    /**
     * @return r the product of a point on G1 and a scalar, i.e.
     *         p == p.scalar_mul(1) and p.plus(p) == p.scalar_mul(2) for all
     *         points p.
     */
    function scalar_mul(G1Point memory p, uint256 s) internal view returns (G1Point memory r) {
        uint256[3] memory input;
        input[0] = p.X;
        input[1] = p.Y;
        input[2] = s;
        bool success;
        // solium-disable-next-line security/no-inline-assembly
        assembly {
            success := staticcall(sub(gas(), 2000), 7, input, 0x60, r, 0x40)
            // Use "invalid" to make gas estimation work
            switch success
            case 0 {
                invalid()
            }
        }
        require(success, "ec-mul-failed");
    }

    /**
     *  @return The result of computing the pairing check
     *         e(p1[0], p2[0]) *  .... * e(p1[n], p2[n]) == 1
     *         For example,
     *         pairing([P1(), P1().negate()], [P2(), P2()]) should return true.
     */
    function pairing(
        G1Point memory a1,
        G2Point memory a2,
        G1Point memory b1,
        G2Point memory b2
    ) internal view returns (bool) {
        G1Point[2] memory p1 = [a1, b1];
        G2Point[2] memory p2 = [a2, b2];

        uint256[12] memory input;

        for (uint256 i = 0; i < 2; i++) {
            uint256 j = i * 6;
            input[j + 0] = p1[i].X;
            input[j + 1] = p1[i].Y;
            input[j + 2] = p2[i].X[0];
            input[j + 3] = p2[i].X[1];
            input[j + 4] = p2[i].Y[0];
            input[j + 5] = p2[i].Y[1];
        }

        uint256[1] memory out;
        bool success;

        // solium-disable-next-line security/no-inline-assembly
        assembly {
            success := staticcall(sub(gas(), 2000), 8, input, mul(12, 0x20), out, 0x20)
            // Use "invalid" to make gas estimation work
            switch success
            case 0 {
                invalid()
            }
        }

        require(success, "pairing-opcode-failed");

        return out[0] != 0;
    }

    /**
     * @notice This function is functionally the same as pairing(), however it specifies a gas limit
     *         the user can set, as a precompile may use the entire gas budget if it reverts.
     */
    function safePairing(
        G1Point memory a1,
        G2Point memory a2,
        G1Point memory b1,
        G2Point memory b2,
        uint256 pairingGas
    ) internal view returns (bool, bool) {
        G1Point[2] memory p1 = [a1, b1];
        G2Point[2] memory p2 = [a2, b2];

        uint256[12] memory input;

        for (uint256 i = 0; i < 2; i++) {
            uint256 j = i * 6;
            input[j + 0] = p1[i].X;
            input[j + 1] = p1[i].Y;
            input[j + 2] = p2[i].X[0];
            input[j + 3] = p2[i].X[1];
            input[j + 4] = p2[i].Y[0];
            input[j + 5] = p2[i].Y[1];
        }

        uint256[1] memory out;
        bool success;

        // solium-disable-next-line security/no-inline-assembly
        assembly {
            success := staticcall(pairingGas, 8, input, mul(12, 0x20), out, 0x20)
        }

        //Out is the output of the pairing precompile, either 0 or 1 based on whether the two pairings are equal.
        //Success is true if the precompile actually goes through (aka all inputs are valid)

        return (success, out[0] != 0);
    }

    /// @return hashedG1 the keccak256 hash of the G1 Point
    /// @dev used for BLS signatures
    function hashG1Point(BN254.G1Point memory pk) internal pure returns (bytes32 hashedG1) {
        assembly {
            mstore(0, mload(pk))
            mstore(0x20, mload(add(0x20, pk)))
            hashedG1 := keccak256(0, 0x40)
        }
    }

    /// @return the keccak256 hash of the G2 Point
    /// @dev used for BLS signatures
    function hashG2Point(
        BN254.G2Point memory pk
    ) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked(pk.X[0], pk.X[1], pk.Y[0], pk.Y[1]));
    }

    /**
     * @notice adapted from https://github.com/HarryR/solcrypto/blob/master/contracts/altbn128.sol
     */
    function hashToG1(bytes32 _x) internal view returns (G1Point memory) {
        uint256 beta = 0;
        uint256 y = 0;

        uint256 x = uint256(_x) % FP_MODULUS;

        while (true) {
            (beta, y) = findYFromX(x);

            // y^2 == beta
            if( beta == mulmod(y, y, FP_MODULUS) ) {
                return G1Point(x, y);
            }

            x = addmod(x, 1, FP_MODULUS);
        }
        return G1Point(0, 0);
    }

    /**
     * Given X, find Y
     *
     *   where y = sqrt(x^3 + b)
     *
     * Returns: (x^3 + b), y
     */
    function findYFromX(uint256 x) internal view returns (uint256, uint256) {
        // beta = (x^3 + b) % p
        uint256 beta = addmod(mulmod(mulmod(x, x, FP_MODULUS), x, FP_MODULUS), 3, FP_MODULUS);

        // y^2 = x^3 + b
        // this acts like: y = sqrt(beta) = beta^((p+1) / 4)
        uint256 y = expMod(beta, 0xc19139cb84c680a6e14116da060561765e05aa45a1c72a34f082305b61f3f52, FP_MODULUS);

        return (beta, y);
    }

    function expMod(uint256 _base, uint256 _exponent, uint256 _modulus) internal view returns (uint256 retval) {
        bool success;
        uint256[1] memory output;
        uint[6] memory input;
        input[0] = 0x20; // baseLen = new(big.Int).SetBytes(getData(input, 0, 32))
        input[1] = 0x20; // expLen  = new(big.Int).SetBytes(getData(input, 32, 32))
        input[2] = 0x20; // modLen  = new(big.Int).SetBytes(getData(input, 64, 32))
        input[3] = _base;
        input[4] = _exponent;
        input[5] = _modulus;
        assembly {
            success := staticcall(sub(gas(), 2000), 5, input, 0xc0, output, 0x20)
            // Use "invalid" to make gas estimation work
            switch success
            case 0 {
                invalid()
            }
        }
        require(success, "BN254.expMod: call failure");
        return output[0];
    }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.5.0;

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

/**
 * @title Minimal interface for an `Strategy` contract.
 * @author Layr Labs, Inc.
 * @notice Terms of Service: https://docs.eigenlayer.xyz/overview/terms-of-service
 * @notice Custom `Strategy` implementations may expand extensively on this interface.
 */
interface IStrategy {
    /**
     * @notice Used to emit an event for the exchange rate between 1 share and underlying token in a strategy contract
     * @param rate is the exchange rate in wad 18 decimals
     * @dev Tokens that do not have 18 decimals must have offchain services scale the exchange rate by the proper magnitude
     */
    event ExchangeRateEmitted(uint256 rate);

    /**
     * Used to emit the underlying token and its decimals on strategy creation
     * @notice token
     * @param token is the ERC20 token of the strategy
     * @param decimals are the decimals of the ERC20 token in the strategy
     */
    event StrategyTokenSet(IERC20 token, uint8 decimals);

    /**
     * @notice Used to deposit tokens into this Strategy
     * @param token is the ERC20 token being deposited
     * @param amount is the amount of token being deposited
     * @dev This function is only callable by the strategyManager contract. It is invoked inside of the strategyManager's
     * `depositIntoStrategy` function, and individual share balances are recorded in the strategyManager as well.
     * @return newShares is the number of new shares issued at the current exchange ratio.
     */
    function deposit(IERC20 token, uint256 amount) external returns (uint256);

    /**
     * @notice Used to withdraw tokens from this Strategy, to the `recipient`'s address
     * @param recipient is the address to receive the withdrawn funds
     * @param token is the ERC20 token being transferred out
     * @param amountShares is the amount of shares being withdrawn
     * @dev This function is only callable by the strategyManager contract. It is invoked inside of the strategyManager's
     * other functions, and individual share balances are recorded in the strategyManager as well.
     */
    function withdraw(address recipient, IERC20 token, uint256 amountShares) external;

    /**
     * @notice Used to convert a number of shares to the equivalent amount of underlying tokens for this strategy.
     * @notice In contrast to `sharesToUnderlyingView`, this function **may** make state modifications
     * @param amountShares is the amount of shares to calculate its conversion into the underlying token
     * @return The amount of underlying tokens corresponding to the input `amountShares`
     * @dev Implementation for these functions in particular may vary significantly for different strategies
     */
    function sharesToUnderlying(uint256 amountShares) external returns (uint256);

    /**
     * @notice Used to convert an amount of underlying tokens to the equivalent amount of shares in this strategy.
     * @notice In contrast to `underlyingToSharesView`, this function **may** make state modifications
     * @param amountUnderlying is the amount of `underlyingToken` to calculate its conversion into strategy shares
     * @return The amount of underlying tokens corresponding to the input `amountShares`
     * @dev Implementation for these functions in particular may vary significantly for different strategies
     */
    function underlyingToShares(uint256 amountUnderlying) external returns (uint256);

    /**
     * @notice convenience function for fetching the current underlying value of all of the `user`'s shares in
     * this strategy. In contrast to `userUnderlyingView`, this function **may** make state modifications
     */
    function userUnderlying(address user) external returns (uint256);

    /**
     * @notice convenience function for fetching the current total shares of `user` in this strategy, by
     * querying the `strategyManager` contract
     */
    function shares(address user) external view returns (uint256);

    /**
     * @notice Used to convert a number of shares to the equivalent amount of underlying tokens for this strategy.
     * @notice In contrast to `sharesToUnderlying`, this function guarantees no state modifications
     * @param amountShares is the amount of shares to calculate its conversion into the underlying token
     * @return The amount of shares corresponding to the input `amountUnderlying`
     * @dev Implementation for these functions in particular may vary significantly for different strategies
     */
    function sharesToUnderlyingView(uint256 amountShares) external view returns (uint256);

    /**
     * @notice Used to convert an amount of underlying tokens to the equivalent amount of shares in this strategy.
     * @notice In contrast to `underlyingToShares`, this function guarantees no state modifications
     * @param amountUnderlying is the amount of `underlyingToken` to calculate its conversion into strategy shares
     * @return The amount of shares corresponding to the input `amountUnderlying`
     * @dev Implementation for these functions in particular may vary significantly for different strategies
     */
    function underlyingToSharesView(uint256 amountUnderlying) external view returns (uint256);

    /**
     * @notice convenience function for fetching the current underlying value of all of the `user`'s shares in
     * this strategy. In contrast to `userUnderlying`, this function guarantees no state modifications
     */
    function userUnderlyingView(address user) external view returns (uint256);

    /// @notice The underlying token for shares in this Strategy
    function underlyingToken() external view returns (IERC20);

    /// @notice The total number of extant shares in this Strategy
    function totalShares() external view returns (uint256);

    /// @notice Returns either a brief string explaining the strategy's goal & purpose, or a link to metadata that explains in more detail.
    function explanation() external view returns (string memory);
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity >=0.5.0;

/**
 * @title Minimal interface for a `Registry`-type contract.
 * @author Layr Labs, Inc.
 * @notice Terms of Service: https://docs.eigenlayer.xyz/overview/terms-of-service
 * @notice Functions related to the registration process itself have been intentionally excluded
 * because their function signatures may vary significantly.
 */
interface IRegistry {
    function registryCoordinator() external view returns (address);
}

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

pragma solidity ^0.8.1;

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

        return account.code.length > 0;
    }

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

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

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

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

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

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly
                /// @solidity memory-safe-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

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

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

{
  "remappings": [
    "@eigenlayer/=eigenlayer-middleware/lib/eigenlayer-contracts/src/",
    "@eigenlayer-scripts/=eigenlayer-middleware/lib/eigenlayer-contracts/script/",
    "@eigenlayer-middleware/=eigenlayer-middleware/",
    "@openzeppelin/=eigenlayer-middleware/lib/eigenlayer-contracts/lib/openzeppelin-contracts/",
    "@openzeppelin-upgrades/=eigenlayer-middleware/lib/eigenlayer-contracts/lib/openzeppelin-contracts-upgradeable/",
    "forge-std/=eigenlayer-middleware/lib/forge-std/src/",
    "ds-test/=eigenlayer-middleware/lib/forge-std/lib/ds-test/src/",
    "@openzeppelin-upgrades-v4.9.0/=eigenlayer-middleware/lib/eigenlayer-contracts/lib/openzeppelin-contracts-upgradeable-v4.9.0/",
    "@openzeppelin-v4.9.0/=eigenlayer-middleware/lib/eigenlayer-contracts/lib/openzeppelin-contracts-v4.9.0/",
    "eigenlayer-contracts/=eigenlayer-middleware/lib/eigenlayer-contracts/",
    "erc4626-tests/=eigenlayer-middleware/lib/eigenlayer-contracts/lib/openzeppelin-contracts-upgradeable-v4.9.0/lib/erc4626-tests/",
    "openzeppelin-contracts-upgradeable-v4.9.0/=eigenlayer-middleware/lib/eigenlayer-contracts/lib/openzeppelin-contracts-upgradeable-v4.9.0/",
    "openzeppelin-contracts-upgradeable/=eigenlayer-middleware/lib/openzeppelin-contracts-upgradeable/",
    "openzeppelin-contracts-v4.9.0/=eigenlayer-middleware/lib/eigenlayer-contracts/lib/openzeppelin-contracts-v4.9.0/",
    "openzeppelin-contracts/=eigenlayer-middleware/lib/openzeppelin-contracts/",
    "openzeppelin/=eigenlayer-middleware/lib/eigenlayer-contracts/lib/openzeppelin-contracts-upgradeable-v4.9.0/contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs"
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "london",
  "viaIR": false,
  "libraries": {}
}

[{"inputs":[{"internalType":"contract IAVSDirectory","name":"_avsDirectory","type":"address"},{"internalType":"contract IRegistryCoordinator","name":"_registryCoordinator","type":"address"},{"internalType":"contract IStakeRegistry","name":"_stakeRegistry","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"oldAddr","type":"address"},{"indexed":true,"internalType":"address","name":"newAddr","type":"address"}],"name":"GatewayAddressUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"string","name":"oldURI","type":"string"},{"indexed":false,"internalType":"string","name":"newURI","type":"string"}],"name":"GatewayURIUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"version","type":"uint8"}],"name":"Initialized","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[],"name":"avsDirectory","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"}],"name":"deregisterOperatorFromAVS","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"gatewayAddr","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"gatewayURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"}],"name":"getOperatorRestakedStrategies","outputs":[{"internalType":"address[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getRestakeableStrategies","outputs":[{"internalType":"address[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"initialOwner","type":"address"},{"internalType":"address","name":"_gatewayAddr","type":"address"},{"internalType":"string","name":"_gatewayURI","type":"string"},{"internalType":"string","name":"_metadataURI","type":"string"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"components":[{"internalType":"bytes","name":"signature","type":"bytes"},{"internalType":"bytes32","name":"salt","type":"bytes32"},{"internalType":"uint256","name":"expiry","type":"uint256"}],"internalType":"struct ISignatureUtils.SignatureWithSaltAndExpiry","name":"operatorSignature","type":"tuple"}],"name":"registerOperatorToAVS","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"_metadataURI","type":"string"}],"name":"updateAVSMetadataURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_gatewayAddr","type":"address"}],"name":"updateGatewayAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"_gatewayURI","type":"string"}],"name":"updateGatewayURI","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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000000000000000000000000055733000064333caddbc92763c58bf0192ffebf00000000000000000000000061aa80e5891dbfcebd0b78a704f3de996e449fde000000000000000000000000cb20b2b4e69fd545f40b7676f7d6f069a0ad9d24

-----Decoded View---------------
Arg [0] : _avsDirectory (address): 0x055733000064333CaDDbC92763c58BF0192fFeBf
Arg [1] : _registryCoordinator (address): 0x61AA80e5891DbfCebD0B78a704F3de996E449FdE
Arg [2] : _stakeRegistry (address): 0xCB20b2b4e69FD545f40b7676F7d6f069a0Ad9d24

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000055733000064333caddbc92763c58bf0192ffebf
Arg [1] : 00000000000000000000000061aa80e5891dbfcebd0b78a704f3de996e449fde
Arg [2] : 000000000000000000000000cb20b2b4e69fd545f40b7676f7d6f069a0ad9d24