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/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

// SPDX-License-Identifier: GPL-3.0-only
pragma solidity 0.8.18;

import "../RocketBase.sol";
import "../../interface/deposit/RocketDepositPoolInterface.sol";
import "../../interface/minipool/RocketMinipoolInterface.sol";
import "../../interface/minipool/RocketMinipoolManagerInterface.sol";
import "../../interface/minipool/RocketMinipoolQueueInterface.sol";
import "../../interface/network/RocketNetworkFeesInterface.sol";
import "../../interface/node/RocketNodeDepositInterface.sol";
import "../../interface/dao/protocol/settings/RocketDAOProtocolSettingsDepositInterface.sol";
import "../../interface/dao/protocol/settings/RocketDAOProtocolSettingsMinipoolInterface.sol";
import "../../interface/dao/protocol/settings/RocketDAOProtocolSettingsNodeInterface.sol";
import "../../interface/dao/protocol/settings/RocketDAOProtocolSettingsNetworkInterface.sol";
import "../../interface/dao/node/RocketDAONodeTrustedInterface.sol";
import "../../interface/dao/node/settings/RocketDAONodeTrustedSettingsMembersInterface.sol";
import "../../types/MinipoolDeposit.sol";
import "../../interface/node/RocketNodeManagerInterface.sol";
import "../../interface/RocketVaultInterface.sol";
import "../../interface/node/RocketNodeStakingInterface.sol";
import "../network/RocketNetworkSnapshots.sol";
import "../../interface/RocketVaultWithdrawerInterface.sol";
import "../../interface/network/RocketNetworkVotingInterface.sol";

/// @notice Handles node deposits and minipool creation
contract RocketNodeDeposit is RocketBase, RocketNodeDepositInterface, RocketVaultWithdrawerInterface {

    // Events
    event DepositReceived(address indexed from, uint256 amount, uint256 time);
    event DepositFor(address indexed nodeAddress, address indexed from, uint256 amount, uint256 time);
    event Withdrawal(address indexed nodeAddress, address indexed to, uint256 amount, uint256 time);

    function receiveVaultWithdrawalETH() external payable {}

    constructor(RocketStorageInterface _rocketStorageAddress) RocketBase(_rocketStorageAddress) {
        version = 4;
    }

    /// @dev Accept incoming ETH from the deposit pool
    receive() external payable onlyLatestContract("rocketDepositPool", msg.sender) {}

    /// @notice Returns a node operator's credit balance in wei
    function getNodeDepositCredit(address _nodeOperator) override public view returns (uint256) {
        return getUint(keccak256(abi.encodePacked("node.deposit.credit.balance", _nodeOperator)));
    }

    /// @notice Returns the current ETH balance for the given node operator
    function getNodeEthBalance(address _nodeAddress) override public view returns (uint256) {
        return getUint(keccak256(abi.encodePacked("node.eth.balance", _nodeAddress)));
    }

    /// @notice Returns the sum of the credit balance of a given node operator and their balance
    function getNodeCreditAndBalance(address _nodeAddress) override external view returns (uint256) {
        return getNodeDepositCredit(_nodeAddress) + getNodeEthBalance(_nodeAddress);
    }

    /// @notice Returns the sum of the amount of ETH credit currently usable by a given node operator and their balance
    function getNodeUsableCreditAndBalance(address _nodeAddress) override external view returns (uint256) {
        return getNodeUsableCredit(_nodeAddress) + getNodeEthBalance(_nodeAddress);
    }

    /// @notice Returns the amount of ETH credit currently usable by a given node operator
    function getNodeUsableCredit(address _nodeAddress) override public view returns (uint256) {
        RocketDepositPoolInterface rocketDepositPool = RocketDepositPoolInterface(getContractAddress("rocketDepositPool"));
        uint256 depositPoolBalance = rocketDepositPool.getBalance();
        uint256 usableCredit = getNodeDepositCredit(_nodeAddress);
        if (usableCredit > depositPoolBalance) {
            usableCredit = depositPoolBalance;
        }
        return usableCredit;
    }

    /// @dev Increases a node operators deposit credit balance
    function increaseDepositCreditBalance(address _nodeAddress, uint256 _amount) override external onlyLatestContract("rocketNodeDeposit", address(this)) onlyRegisteredNode(_nodeAddress) {
        // Accept calls from network contracts or registered minipools
        require(getBool(keccak256(abi.encodePacked("minipool.exists", msg.sender))) ||
            getBool(keccak256(abi.encodePacked("contract.exists", msg.sender))),
            "Invalid or outdated network contract");
        // Increase credit balance
        addUint(keccak256(abi.encodePacked("node.deposit.credit.balance", _nodeAddress)), _amount);
    }

    /// @notice Deposits ETH for the given node operator
    /// @param _nodeAddress The address of the node operator to deposit ETH for
    function depositEthFor(address _nodeAddress) override external payable onlyLatestContract("rocketNodeDeposit", address(this)) onlyRegisteredNode(_nodeAddress) {
        // Sanity check caller is not node itself
        require(msg.sender != _nodeAddress, "Cannot deposit ETH for self");
        // Send the ETH to vault
        uint256 amount = msg.value;
        RocketVaultInterface rocketVault = RocketVaultInterface(getContractAddress("rocketVault"));
        rocketVault.depositEther{value: amount}();
        // Increment balance
        addUint(keccak256(abi.encodePacked("node.eth.balance", _nodeAddress)), amount);
        // Log it
        emit DepositFor(_nodeAddress, msg.sender, amount, block.timestamp);
    }

    /// @notice Withdraws ETH from a node operator's balance. Must be called from withdrawal address.
    /// @param _nodeAddress Address of the node operator to withdraw from
    /// @param _amount Amount of ETH to withdraw
    function withdrawEth(address _nodeAddress, uint256 _amount) external onlyLatestContract("rocketNodeDeposit", address(this)) onlyRegisteredNode(_nodeAddress) {
        // Check valid caller
        address withdrawalAddress = rocketStorage.getNodeWithdrawalAddress(_nodeAddress);
        require(msg.sender == withdrawalAddress, "Only withdrawal address can withdraw ETH");
        // Check balance and update
        uint256 balance = getNodeEthBalance(_nodeAddress);
        require(balance >= _amount, "Insufficient balance");
        setUint(keccak256(abi.encodePacked("node.eth.balance", _nodeAddress)), balance - _amount);
        // Withdraw the funds
        RocketVaultInterface rocketVault = RocketVaultInterface(getContractAddress("rocketVault"));
        rocketVault.withdrawEther(_amount);
        // Send funds to withdrawalAddress
        (bool success, ) = withdrawalAddress.call{value: _amount}("");
        require(success, "Failed to withdraw ETH");
        // Log it
        emit Withdrawal(_nodeAddress, withdrawalAddress, _amount, block.timestamp);
    }

    /// @notice Accept a node deposit and create a new minipool under the node. Only accepts calls from registered nodes
    /// @param _bondAmount The amount of capital the node operator wants to put up as his bond
    /// @param _minimumNodeFee Transaction will revert if network commission rate drops below this amount
    /// @param _validatorPubkey Pubkey of the validator the node operator wishes to migrate
    /// @param _validatorSignature Signature from the validator over the deposit data
    /// @param _depositDataRoot The hash tree root of the deposit data (passed onto the deposit contract on pre stake)
    /// @param _salt Salt used to deterministically construct the minipool's address
    /// @param _expectedMinipoolAddress The expected deterministic minipool address. Will revert if it doesn't match
    function deposit(uint256 _bondAmount, uint256 _minimumNodeFee, bytes calldata _validatorPubkey, bytes calldata _validatorSignature, bytes32 _depositDataRoot, uint256 _salt, address _expectedMinipoolAddress) override external payable onlyLatestContract("rocketNodeDeposit", address(this)) onlyRegisteredNode(msg.sender) {
        // Check amount
        require(msg.value == _bondAmount, "Invalid value");
        // Process the deposit
        _deposit(_bondAmount, _minimumNodeFee, _validatorPubkey, _validatorSignature, _depositDataRoot, _salt, _expectedMinipoolAddress);
    }

    /// @notice Accept a node deposit and create a new minipool under the node. Uses node's credit balance to cover
    ///         shortfall in value provided to cover bond. Only accepts calls from registered nodes
    /// @param _bondAmount The amount of capital the node operator wants to put up as his bond
    /// @param _minimumNodeFee Transaction will revert if network commission rate drops below this amount
    /// @param _validatorPubkey Pubkey of the validator the node operator wishes to migrate
    /// @param _validatorSignature Signature from the validator over the deposit data
    /// @param _depositDataRoot The hash tree root of the deposit data (passed onto the deposit contract on pre stake)
    /// @param _salt Salt used to deterministically construct the minipool's address
    /// @param _expectedMinipoolAddress The expected deterministic minipool address. Will revert if it doesn't match
    function depositWithCredit(uint256 _bondAmount, uint256 _minimumNodeFee, bytes calldata _validatorPubkey, bytes calldata _validatorSignature, bytes32 _depositDataRoot, uint256 _salt, address _expectedMinipoolAddress) override external payable onlyLatestContract("rocketNodeDeposit", address(this)) onlyRegisteredNode(msg.sender) {
        // Sanity check
        require(msg.value <= _bondAmount, "Excessive value for requested bond");
        {
            uint256 balanceToUse = 0;
            uint256 creditToUse = 0;
            uint256 shortFall = _bondAmount - msg.value;
            uint256 credit = getNodeUsableCredit(msg.sender);
            uint256 balance = getNodeEthBalance(msg.sender);
            // Check credit
            require (credit + balance >= shortFall, "Insufficient credit");
            // Calculate amounts to use
            creditToUse = shortFall;
            if (credit < shortFall) {
                balanceToUse = shortFall - credit;
                creditToUse = credit;
            }
            // Update balances
            if (balanceToUse > 0) {
                subUint(keccak256(abi.encodePacked("node.eth.balance", msg.sender)), balanceToUse);
                // Withdraw the funds
                RocketVaultInterface rocketVault = RocketVaultInterface(getContractAddress("rocketVault"));
                rocketVault.withdrawEther(balanceToUse);
            }
            if (creditToUse > 0) {
                subUint(keccak256(abi.encodePacked("node.deposit.credit.balance", msg.sender)), creditToUse);
            }
        }
        // Process the deposit
        _deposit(_bondAmount, _minimumNodeFee, _validatorPubkey, _validatorSignature, _depositDataRoot, _salt, _expectedMinipoolAddress);
    }

    /// @notice Returns true if the given amount is a valid deposit amount
    function isValidDepositAmount(uint256 _amount) override public pure returns (bool) {
        return _amount == 16 ether || _amount == 8 ether;
    }

    /// @notice Returns an array of valid deposit amounts
    function getDepositAmounts() override external pure returns (uint256[] memory) {
        uint256[] memory amounts = new uint256[](2);
        amounts[0] = 16 ether;
        amounts[1] = 8 ether;
        return amounts;
    }

    /// @dev Internal logic to process a deposit
    function _deposit(uint256 _bondAmount, uint256 _minimumNodeFee, bytes calldata _validatorPubkey, bytes calldata _validatorSignature, bytes32 _depositDataRoot, uint256 _salt, address _expectedMinipoolAddress) private {
        // Check pre-conditions
        checkVotingInitialised();
        checkDepositsEnabled();
        checkDistributorInitialised();
        checkNodeFee(_minimumNodeFee);
        require(isValidDepositAmount(_bondAmount), "Invalid deposit amount");
        // Get launch constants
        uint256 launchAmount;
        uint256 preLaunchValue;
        {
            RocketDAOProtocolSettingsMinipoolInterface rocketDAOProtocolSettingsMinipool = RocketDAOProtocolSettingsMinipoolInterface(getContractAddress("rocketDAOProtocolSettingsMinipool"));
            launchAmount = rocketDAOProtocolSettingsMinipool.getLaunchBalance();
            preLaunchValue = rocketDAOProtocolSettingsMinipool.getPreLaunchValue();
        }
        // Emit deposit received event
        emit DepositReceived(msg.sender, msg.value, block.timestamp);
        // Increase ETH matched (used to calculate RPL collateral requirements)
        _increaseEthMatched(msg.sender, launchAmount - _bondAmount);
        // Create the minipool
        RocketMinipoolInterface minipool = createMinipool(_salt, _expectedMinipoolAddress);
        // Process node deposit
        _processNodeDeposit(preLaunchValue, _bondAmount);
        // Perform the pre deposit
        minipool.preDeposit{value: preLaunchValue}(_bondAmount, _validatorPubkey, _validatorSignature, _depositDataRoot);
        // Enqueue the minipool
        enqueueMinipool(address(minipool));
        // Assign deposits if enabled
        assignDeposits();
    }

    /// @dev Processes a node deposit with the deposit pool. If user has not supplied full bond amount with the transaction
    ///      the shortfall will be taken from their credit. Any excess ETH after prelaunch value is sent to minipool is
    //       then deposited into the deposit pool
    /// @param _preLaunchValue The prelaunch value (result of call to `RocketDAOProtocolSettingsMinipool.getPreLaunchValue()`
    /// @param _bondAmount The bond amount for this deposit
    function _processNodeDeposit(uint256 _preLaunchValue, uint256 _bondAmount) private {
        // Get contracts
        RocketDepositPoolInterface rocketDepositPool = RocketDepositPoolInterface(getContractAddress("rocketDepositPool"));
        // Retrieve ETH from deposit pool if required
        uint256 shortFall = 0;
        if (address(this).balance < _preLaunchValue) {
            shortFall = _preLaunchValue - address(this).balance;
            rocketDepositPool.nodeCreditWithdrawal(shortFall);
        }
        uint256 remaining = address(this).balance - _preLaunchValue;
        // Deposit the left over value into the deposit pool
        rocketDepositPool.nodeDeposit{value: remaining}(_bondAmount - _preLaunchValue);
    }

    /// @notice Creates a "vacant" minipool which a node operator can use to migrate a validator with a BLS withdrawal credential
    /// @param _bondAmount The amount of capital the node operator wants to put up as his bond
    /// @param _minimumNodeFee Transaction will revert if network commission rate drops below this amount
    /// @param _validatorPubkey Pubkey of the validator the node operator wishes to migrate
    /// @param _salt Salt used to deterministically construct the minipool's address
    /// @param _expectedMinipoolAddress The expected deterministic minipool address. Will revert if it doesn't match
    /// @param _currentBalance The current balance of the validator on the beaconchain (will be checked by oDAO and scrubbed if not correct)
    function createVacantMinipool(uint256 _bondAmount, uint256 _minimumNodeFee, bytes calldata _validatorPubkey, uint256 _salt, address _expectedMinipoolAddress, uint256 _currentBalance) override external onlyLatestContract("rocketNodeDeposit", address(this)) onlyRegisteredNode(msg.sender) {
        // Check pre-conditions
        checkVacantMinipoolsEnabled();
        checkDistributorInitialised();
        checkNodeFee(_minimumNodeFee);
        require(isValidDepositAmount(_bondAmount), "Invalid deposit amount");
        // Increase ETH matched (used to calculate RPL collateral requirements)
        RocketDAOProtocolSettingsMinipoolInterface rocketDAOProtocolSettingsMinipool = RocketDAOProtocolSettingsMinipoolInterface(getContractAddress("rocketDAOProtocolSettingsMinipool"));
        uint256 launchAmount = rocketDAOProtocolSettingsMinipool.getLaunchBalance();
        _increaseEthMatched(msg.sender, launchAmount - _bondAmount);
        // Create the minipool
        _createVacantMinipool(_salt, _validatorPubkey, _bondAmount, _expectedMinipoolAddress, _currentBalance);
    }

    /// @notice Called by minipools during bond reduction to increase the amount of ETH the node operator has
    /// @param _nodeAddress The node operator's address to increase the ETH matched for
    /// @param _amount The amount to increase the ETH matched
    /// @dev Will revert if the new ETH matched amount exceeds the node operators limit
    function increaseEthMatched(address _nodeAddress, uint256 _amount) override external onlyLatestContract("rocketNodeDeposit", address(this)) onlyLatestNetworkContract() {
        // Try to distribute any existing rewards at the previous collateral rate
        RocketMinipoolManagerInterface rocketMinipoolManager = RocketMinipoolManagerInterface(getContractAddress("rocketMinipoolManager"));
        rocketMinipoolManager.tryDistribute(_nodeAddress);
        // Increase ETH matched
        _increaseEthMatched(_nodeAddress, _amount);
    }

    /// @dev Increases the amount of ETH that has been matched against a node operators bond. Reverts if it exceeds the
    ///      collateralisation requirements of the network
    function _increaseEthMatched(address _nodeAddress, uint256 _amount) private {
        // Check amount doesn't exceed limits
        RocketNodeStakingInterface rocketNodeStaking = RocketNodeStakingInterface(getContractAddress("rocketNodeStaking"));
        RocketNetworkSnapshots rocketNetworkSnapshots = RocketNetworkSnapshots(getContractAddress("rocketNetworkSnapshots"));
        uint256 ethMatched = rocketNodeStaking.getNodeETHMatched(_nodeAddress) + _amount;
        require(
            ethMatched <= rocketNodeStaking.getNodeETHMatchedLimit(_nodeAddress),
            "ETH matched after deposit exceeds limit based on node RPL stake"
        );
        // Push the change to snapshot manager
        bytes32 key = keccak256(abi.encodePacked("eth.matched.node.amount", _nodeAddress));
        rocketNetworkSnapshots.push(key, uint224(ethMatched));
    }

    /// @dev Adds a minipool to the queue
    function enqueueMinipool(address _minipoolAddress) private {
        // Add minipool to queue
        RocketMinipoolQueueInterface(getContractAddress("rocketMinipoolQueue")).enqueueMinipool(_minipoolAddress);
    }

    /// @dev Initialises node's voting power if not already done
    function checkVotingInitialised() private {
        // Ensure voting has been initialised for this node
        RocketNetworkVotingInterface rocketNetworkVoting = RocketNetworkVotingInterface(getContractAddress("rocketNetworkVoting"));
        rocketNetworkVoting.initialiseVotingFor(msg.sender);
    }

    /// @dev Reverts if node operator has not initialised their fee distributor
    function checkDistributorInitialised() private view {
        // Check node has initialised their fee distributor
        RocketNodeManagerInterface rocketNodeManager = RocketNodeManagerInterface(getContractAddress("rocketNodeManager"));
        require(rocketNodeManager.getFeeDistributorInitialised(msg.sender), "Fee distributor not initialised");
    }

    /// @dev Creates a minipool and returns an instance of it
    /// @param _salt The salt used to determine the minipools address
    /// @param _expectedMinipoolAddress The expected minipool address. Reverts if not correct
    function createMinipool(uint256 _salt, address _expectedMinipoolAddress) private returns (RocketMinipoolInterface) {
        // Load contracts
        RocketMinipoolManagerInterface rocketMinipoolManager = RocketMinipoolManagerInterface(getContractAddress("rocketMinipoolManager"));
        // Check minipool doesn't exist or previously exist
        require(!rocketMinipoolManager.getMinipoolExists(_expectedMinipoolAddress) && !rocketMinipoolManager.getMinipoolDestroyed(_expectedMinipoolAddress), "Minipool already exists or was previously destroyed");
        // Create minipool
        RocketMinipoolInterface minipool = rocketMinipoolManager.createMinipool(msg.sender, _salt);
        // Ensure minipool address matches expected
        require(address(minipool) == _expectedMinipoolAddress, "Unexpected minipool address");
        // Return
        return minipool;
    }

    /// @dev Creates a vacant minipool and returns an instance of it
    /// @param _salt The salt used to determine the minipools address
    /// @param _validatorPubkey Pubkey of the validator owning this minipool
    /// @param _bondAmount ETH value the node operator is putting up as capital for this minipool
    /// @param _expectedMinipoolAddress The expected minipool address. Reverts if not correct
    /// @param _currentBalance The current balance of the validator on the beaconchain (will be checked by oDAO and scrubbed if not correct)
    function _createVacantMinipool(uint256 _salt, bytes calldata _validatorPubkey, uint256 _bondAmount, address _expectedMinipoolAddress, uint256 _currentBalance) private returns (RocketMinipoolInterface) {
        // Load contracts
        RocketMinipoolManagerInterface rocketMinipoolManager = RocketMinipoolManagerInterface(getContractAddress("rocketMinipoolManager"));
        // Check minipool doesn't exist or previously exist
        require(!rocketMinipoolManager.getMinipoolExists(_expectedMinipoolAddress) && !rocketMinipoolManager.getMinipoolDestroyed(_expectedMinipoolAddress), "Minipool already exists or was previously destroyed");
        // Create minipool
        RocketMinipoolInterface minipool = rocketMinipoolManager.createVacantMinipool(msg.sender, _salt, _validatorPubkey, _bondAmount, _currentBalance);
        // Ensure minipool address matches expected
        require(address(minipool) == _expectedMinipoolAddress, "Unexpected minipool address");
        // Return
        return minipool;
    }

    /// @dev Reverts if network node fee is below a minimum
    /// @param _minimumNodeFee The minimum node fee required to not revert
    function checkNodeFee(uint256 _minimumNodeFee) private view {
        // Load contracts
        RocketNetworkFeesInterface rocketNetworkFees = RocketNetworkFeesInterface(getContractAddress("rocketNetworkFees"));
        // Check current node fee
        uint256 nodeFee = rocketNetworkFees.getNodeFee();
        require(nodeFee >= _minimumNodeFee, "Minimum node fee exceeds current network node fee");
    }

    /// @dev Reverts if deposits are not enabled
    function checkDepositsEnabled() private view {
        // Get contracts
        RocketDAOProtocolSettingsNodeInterface rocketDAOProtocolSettingsNode = RocketDAOProtocolSettingsNodeInterface(getContractAddress("rocketDAOProtocolSettingsNode"));
        // Check node settings
        require(rocketDAOProtocolSettingsNode.getDepositEnabled(), "Node deposits are currently disabled");
    }

    /// @dev Reverts if vacant minipools are not enabled
    function checkVacantMinipoolsEnabled() private view {
        // Get contracts
        RocketDAOProtocolSettingsNodeInterface rocketDAOProtocolSettingsNode = RocketDAOProtocolSettingsNodeInterface(getContractAddress("rocketDAOProtocolSettingsNode"));
        // Check node settings
        require(rocketDAOProtocolSettingsNode.getVacantMinipoolsEnabled(), "Vacant minipools are currently disabled");
    }

    /// @dev Executes an assignDeposits call on the deposit pool
    function assignDeposits() private {
        RocketDepositPoolInterface rocketDepositPool = RocketDepositPoolInterface(getContractAddress("rocketDepositPool"));
        rocketDepositPool.maybeAssignDeposits();
    }
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

pragma solidity >0.5.0 <0.9.0;

// SPDX-License-Identifier: GPL-3.0-only

interface RocketStorageInterface {

    // Deploy status
    function getDeployedStatus() external view returns (bool);

    // Guardian
    function getGuardian() external view returns(address);
    function setGuardian(address _newAddress) external;
    function confirmGuardian() external;

    // Getters
    function getAddress(bytes32 _key) external view returns (address);
    function getUint(bytes32 _key) external view returns (uint);
    function getString(bytes32 _key) external view returns (string memory);
    function getBytes(bytes32 _key) external view returns (bytes memory);
    function getBool(bytes32 _key) external view returns (bool);
    function getInt(bytes32 _key) external view returns (int);
    function getBytes32(bytes32 _key) external view returns (bytes32);

    // Setters
    function setAddress(bytes32 _key, address _value) external;
    function setUint(bytes32 _key, uint _value) external;
    function setString(bytes32 _key, string calldata _value) external;
    function setBytes(bytes32 _key, bytes calldata _value) external;
    function setBool(bytes32 _key, bool _value) external;
    function setInt(bytes32 _key, int _value) external;
    function setBytes32(bytes32 _key, bytes32 _value) external;

    // Deleters
    function deleteAddress(bytes32 _key) external;
    function deleteUint(bytes32 _key) external;
    function deleteString(bytes32 _key) external;
    function deleteBytes(bytes32 _key) external;
    function deleteBool(bytes32 _key) external;
    function deleteInt(bytes32 _key) external;
    function deleteBytes32(bytes32 _key) external;

    // Arithmetic
    function addUint(bytes32 _key, uint256 _amount) external;
    function subUint(bytes32 _key, uint256 _amount) external;

    // Protected storage
    function getNodeWithdrawalAddress(address _nodeAddress) external view returns (address);
    function getNodePendingWithdrawalAddress(address _nodeAddress) external view returns (address);
    function setWithdrawalAddress(address _nodeAddress, address _newWithdrawalAddress, bool _confirm) external;
    function confirmWithdrawalAddress(address _nodeAddress) external;
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

pragma solidity >0.5.0 <0.9.0;

// SPDX-License-Identifier: GPL-3.0-only

import "../interface/RocketStorageInterface.sol";

/// @title Base settings / modifiers for each contract in Rocket Pool
/// @author David Rugendyke

abstract contract RocketBase {

    // Calculate using this as the base
    uint256 constant calcBase = 1 ether;

    // Version of the contract
    uint8 public version;

    // The main storage contract where primary persistant storage is maintained
    RocketStorageInterface rocketStorage = RocketStorageInterface(address(0));


    /*** Modifiers **********************************************************/

    /**
    * @dev Throws if called by any sender that doesn't match a Rocket Pool network contract
    */
    modifier onlyLatestNetworkContract() {
        require(getBool(keccak256(abi.encodePacked("contract.exists", msg.sender))), "Invalid or outdated network contract");
        _;
    }

    /**
    * @dev Throws if called by any sender that doesn't match one of the supplied contract or is the latest version of that contract
    */
    modifier onlyLatestContract(string memory _contractName, address _contractAddress) {
        require(_contractAddress == getAddress(keccak256(abi.encodePacked("contract.address", _contractName))), "Invalid or outdated contract");
        _;
    }

    /**
    * @dev Throws if called by any sender that isn't a registered node
    */
    modifier onlyRegisteredNode(address _nodeAddress) {
        require(getBool(keccak256(abi.encodePacked("node.exists", _nodeAddress))), "Invalid node");
        _;
    }

    /**
    * @dev Throws if called by any sender that isn't a trusted node DAO member
    */
    modifier onlyTrustedNode(address _nodeAddress) {
        require(getBool(keccak256(abi.encodePacked("dao.trustednodes.", "member", _nodeAddress))), "Invalid trusted node");
        _;
    }

    /**
    * @dev Throws if called by any sender that isn't a registered minipool
    */
    modifier onlyRegisteredMinipool(address _minipoolAddress) {
        require(getBool(keccak256(abi.encodePacked("minipool.exists", _minipoolAddress))), "Invalid minipool");
        _;
    }
    

    /**
    * @dev Throws if called by any account other than a guardian account (temporary account allowed access to settings before DAO is fully enabled)
    */
    modifier onlyGuardian() {
        require(msg.sender == rocketStorage.getGuardian(), "Account is not a temporary guardian");
        _;
    }




    /*** Methods **********************************************************/

    /// @dev Set the main Rocket Storage address
    constructor(RocketStorageInterface _rocketStorageAddress) {
        // Update the contract address
        rocketStorage = RocketStorageInterface(_rocketStorageAddress);
    }


    /// @dev Get the address of a network contract by name
    function getContractAddress(string memory _contractName) internal view returns (address) {
        // Get the current contract address
        address contractAddress = getAddress(keccak256(abi.encodePacked("contract.address", _contractName)));
        // Check it
        require(contractAddress != address(0x0), "Contract not found");
        // Return
        return contractAddress;
    }


    /// @dev Get the address of a network contract by name (returns address(0x0) instead of reverting if contract does not exist)
    function getContractAddressUnsafe(string memory _contractName) internal view returns (address) {
        // Get the current contract address
        address contractAddress = getAddress(keccak256(abi.encodePacked("contract.address", _contractName)));
        // Return
        return contractAddress;
    }


    /// @dev Get the name of a network contract by address
    function getContractName(address _contractAddress) internal view returns (string memory) {
        // Get the contract name
        string memory contractName = getString(keccak256(abi.encodePacked("contract.name", _contractAddress)));
        // Check it
        require(bytes(contractName).length > 0, "Contract not found");
        // Return
        return contractName;
    }

    /// @dev Get revert error message from a .call method
    function getRevertMsg(bytes memory _returnData) internal pure returns (string memory) {
        // If the _res length is less than 68, then the transaction failed silently (without a revert message)
        if (_returnData.length < 68) return "Transaction reverted silently";
        assembly {
            // Slice the sighash.
            _returnData := add(_returnData, 0x04)
        }
        return abi.decode(_returnData, (string)); // All that remains is the revert string
    }



    /*** Rocket Storage Methods ****************************************/

    // Note: Unused helpers have been removed to keep contract sizes down

    /// @dev Storage get methods
    function getAddress(bytes32 _key) internal view returns (address) { return rocketStorage.getAddress(_key); }
    function getUint(bytes32 _key) internal view returns (uint) { return rocketStorage.getUint(_key); }
    function getString(bytes32 _key) internal view returns (string memory) { return rocketStorage.getString(_key); }
    function getBytes(bytes32 _key) internal view returns (bytes memory) { return rocketStorage.getBytes(_key); }
    function getBool(bytes32 _key) internal view returns (bool) { return rocketStorage.getBool(_key); }
    function getInt(bytes32 _key) internal view returns (int) { return rocketStorage.getInt(_key); }
    function getBytes32(bytes32 _key) internal view returns (bytes32) { return rocketStorage.getBytes32(_key); }

    /// @dev Storage set methods
    function setAddress(bytes32 _key, address _value) internal { rocketStorage.setAddress(_key, _value); }
    function setUint(bytes32 _key, uint _value) internal { rocketStorage.setUint(_key, _value); }
    function setString(bytes32 _key, string memory _value) internal { rocketStorage.setString(_key, _value); }
    function setBytes(bytes32 _key, bytes memory _value) internal { rocketStorage.setBytes(_key, _value); }
    function setBool(bytes32 _key, bool _value) internal { rocketStorage.setBool(_key, _value); }
    function setInt(bytes32 _key, int _value) internal { rocketStorage.setInt(_key, _value); }
    function setBytes32(bytes32 _key, bytes32 _value) internal { rocketStorage.setBytes32(_key, _value); }

    /// @dev Storage delete methods
    function deleteAddress(bytes32 _key) internal { rocketStorage.deleteAddress(_key); }
    function deleteUint(bytes32 _key) internal { rocketStorage.deleteUint(_key); }
    function deleteString(bytes32 _key) internal { rocketStorage.deleteString(_key); }
    function deleteBytes(bytes32 _key) internal { rocketStorage.deleteBytes(_key); }
    function deleteBool(bytes32 _key) internal { rocketStorage.deleteBool(_key); }
    function deleteInt(bytes32 _key) internal { rocketStorage.deleteInt(_key); }
    function deleteBytes32(bytes32 _key) internal { rocketStorage.deleteBytes32(_key); }

    /// @dev Storage arithmetic methods
    function addUint(bytes32 _key, uint256 _amount) internal { rocketStorage.addUint(_key, _amount); }
    function subUint(bytes32 _key, uint256 _amount) internal { rocketStorage.subUint(_key, _amount); }
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

pragma solidity >0.5.0 <0.9.0;

// SPDX-License-Identifier: GPL-3.0-only

interface RocketDepositPoolInterface {
    function getBalance() external view returns (uint256);
    function getNodeBalance() external view returns (uint256);
    function getUserBalance() external view returns (int256);
    function getExcessBalance() external view returns (uint256);
    function deposit() external payable;
    function getMaximumDepositAmount() external view returns (uint256);
    function nodeDeposit(uint256 _totalAmount) external payable;
    function nodeCreditWithdrawal(uint256 _amount) external;
    function recycleDissolvedDeposit() external payable;
    function recycleExcessCollateral() external payable;
    function recycleLiquidatedStake() external payable;
    function assignDeposits() external;
    function maybeAssignDeposits() external returns (bool);
    function withdrawExcessBalance(uint256 _amount) external;
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

pragma solidity >0.5.0 <0.9.0;

// SPDX-License-Identifier: GPL-3.0-only

// Represents the type of deposits required by a minipool

enum MinipoolDeposit {
    None,       // Marks an invalid deposit type
    Full,       // The minipool requires 32 ETH from the node operator, 16 ETH of which will be refinanced from user deposits
    Half,       // The minipool required 16 ETH from the node operator to be matched with 16 ETH from user deposits
    Empty,      // The minipool requires 0 ETH from the node operator to be matched with 32 ETH from user deposits (trusted nodes only)
    Variable    // Indicates this minipool is of the new generation that supports a variable deposit amount
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

pragma solidity >0.5.0 <0.9.0;

// SPDX-License-Identifier: GPL-3.0-only

// Represents a minipool's status within the network

enum MinipoolStatus {
    Initialised,    // The minipool has been initialised and is awaiting a deposit of user ETH
    Prelaunch,      // The minipool has enough ETH to begin staking and is awaiting launch by the node operator
    Staking,        // The minipool is currently staking
    Withdrawable,   // NO LONGER USED
    Dissolved       // The minipool has been dissolved and its user deposited ETH has been returned to the deposit pool
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

pragma solidity >0.5.0 <0.9.0;

// SPDX-License-Identifier: GPL-3.0-only

import "../../types/MinipoolDeposit.sol";
import "../../types/MinipoolStatus.sol";
import "../RocketStorageInterface.sol";

interface RocketMinipoolInterface {
    function version() external view returns (uint8);
    function initialise(address _nodeAddress) external;
    function getStatus() external view returns (MinipoolStatus);
    function getFinalised() external view returns (bool);
    function getStatusBlock() external view returns (uint256);
    function getStatusTime() external view returns (uint256);
    function getScrubVoted(address _member) external view returns (bool);
    function getDepositType() external view returns (MinipoolDeposit);
    function getNodeAddress() external view returns (address);
    function getNodeFee() external view returns (uint256);
    function getNodeDepositBalance() external view returns (uint256);
    function getNodeRefundBalance() external view returns (uint256);
    function getNodeDepositAssigned() external view returns (bool);
    function getPreLaunchValue() external view returns (uint256);
    function getNodeTopUpValue() external view returns (uint256);
    function getVacant() external view returns (bool);
    function getPreMigrationBalance() external view returns (uint256);
    function getUserDistributed() external view returns (bool);
    function getUserDepositBalance() external view returns (uint256);
    function getUserDepositAssigned() external view returns (bool);
    function getUserDepositAssignedTime() external view returns (uint256);
    function getTotalScrubVotes() external view returns (uint256);
    function calculateNodeShare(uint256 _balance) external view returns (uint256);
    function calculateUserShare(uint256 _balance) external view returns (uint256);
    function preDeposit(uint256 _bondingValue, bytes calldata _validatorPubkey, bytes calldata _validatorSignature, bytes32 _depositDataRoot) external payable;
    function deposit() external payable;
    function userDeposit() external payable;
    function distributeBalance(bool _rewardsOnly) external;
    function beginUserDistribute() external;
    function userDistributeAllowed() external view returns (bool);
    function refund() external;
    function slash() external;
    function finalise() external;
    function canStake() external view returns (bool);
    function canPromote() external view returns (bool);
    function stake(bytes calldata _validatorSignature, bytes32 _depositDataRoot) external;
    function prepareVacancy(uint256 _bondAmount, uint256 _currentBalance) external;
    function promote() external;
    function dissolve() external;
    function close() external;
    function voteScrub() external;
    function reduceBondAmount() external;
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

pragma solidity >0.5.0 <0.9.0;

// SPDX-License-Identifier: GPL-3.0-only

import "./MinipoolDeposit.sol";
import "./MinipoolStatus.sol";

// A struct containing all the information on-chain about a specific minipool

struct MinipoolDetails {
    bool exists;
    address minipoolAddress;
    bytes pubkey;
    MinipoolStatus status;
    uint256 statusBlock;
    uint256 statusTime;
    bool finalised;
    MinipoolDeposit depositType;
    uint256 nodeFee;
    uint256 nodeDepositBalance;
    bool nodeDepositAssigned;
    uint256 userDepositBalance;
    bool userDepositAssigned;
    uint256 userDepositAssignedTime;
    bool useLatestDelegate;
    address delegate;
    address previousDelegate;
    address effectiveDelegate;
    uint256 penaltyCount;
    uint256 penaltyRate;
    address nodeAddress;
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

pragma solidity >0.5.0 <0.9.0;
pragma abicoder v2;

// SPDX-License-Identifier: GPL-3.0-only

import "../../types/MinipoolDeposit.sol";
import "../../types/MinipoolDetails.sol";
import "./RocketMinipoolInterface.sol";

interface RocketMinipoolManagerInterface {
    function getMinipoolCount() external view returns (uint256);
    function getStakingMinipoolCount() external view returns (uint256);
    function getFinalisedMinipoolCount() external view returns (uint256);
    function getActiveMinipoolCount() external view returns (uint256);
    function getMinipoolRPLSlashed(address _minipoolAddress) external view returns (bool);
    function getMinipoolCountPerStatus(uint256 offset, uint256 limit) external view returns (uint256, uint256, uint256, uint256, uint256);
    function getPrelaunchMinipools(uint256 offset, uint256 limit) external view returns (address[] memory);
    function getMinipoolAt(uint256 _index) external view returns (address);
    function getNodeMinipoolCount(address _nodeAddress) external view returns (uint256);
    function getNodeActiveMinipoolCount(address _nodeAddress) external view returns (uint256);
    function getNodeFinalisedMinipoolCount(address _nodeAddress) external view returns (uint256);
    function getNodeStakingMinipoolCount(address _nodeAddress) external view returns (uint256);
    function getNodeStakingMinipoolCountBySize(address _nodeAddress, uint256 _depositSize) external view returns (uint256);
    function getNodeMinipoolAt(address _nodeAddress, uint256 _index) external view returns (address);
    function getNodeValidatingMinipoolCount(address _nodeAddress) external view returns (uint256);
    function getNodeValidatingMinipoolAt(address _nodeAddress, uint256 _index) external view returns (address);
    function getMinipoolByPubkey(bytes calldata _pubkey) external view returns (address);
    function getMinipoolExists(address _minipoolAddress) external view returns (bool);
    function getMinipoolDestroyed(address _minipoolAddress) external view returns (bool);
    function getMinipoolPubkey(address _minipoolAddress) external view returns (bytes memory);
    function updateNodeStakingMinipoolCount(uint256 _previousBond, uint256 _newBond, uint256 _previousFee, uint256 _newFee) external;
    function getMinipoolWithdrawalCredentials(address _minipoolAddress) external pure returns (bytes memory);
    function createMinipool(address _nodeAddress, uint256 _salt) external returns (RocketMinipoolInterface);
    function createVacantMinipool(address _nodeAddress, uint256 _salt, bytes calldata _validatorPubkey, uint256 _bondAmount, uint256 _currentBalance) external returns (RocketMinipoolInterface);
    function removeVacantMinipool() external;
    function getVacantMinipoolCount() external view returns (uint256);
    function getVacantMinipoolAt(uint256 _index) external view returns (address);
    function destroyMinipool() external;
    function incrementNodeStakingMinipoolCount(address _nodeAddress) external;
    function decrementNodeStakingMinipoolCount(address _nodeAddress) external;
    function tryDistribute(address _nodeAddress) external;
    function incrementNodeFinalisedMinipoolCount(address _nodeAddress) external;
    function setMinipoolPubkey(bytes calldata _pubkey) external;
    function getMinipoolDepositType(address _minipoolAddress) external view returns (MinipoolDeposit);
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

pragma solidity >0.5.0 <0.9.0;

// SPDX-License-Identifier: GPL-3.0-only

import "../../types/MinipoolDeposit.sol";

interface RocketMinipoolQueueInterface {
    function getTotalLength() external view returns (uint256);
    function getContainsLegacy() external view returns (bool);
    function getLengthLegacy(MinipoolDeposit _depositType) external view returns (uint256);
    function getLength() external view returns (uint256);
    function getTotalCapacity() external view returns (uint256);
    function getEffectiveCapacity() external view returns (uint256);
    function getNextCapacityLegacy() external view returns (uint256);
    function getNextDepositLegacy() external view returns (MinipoolDeposit, uint256);
    function enqueueMinipool(address _minipool) external;
    function dequeueMinipoolByDepositLegacy(MinipoolDeposit _depositType) external returns (address minipoolAddress);
    function dequeueMinipools(uint256 _maxToDequeue) external returns (address[] memory minipoolAddress);
    function removeMinipool(MinipoolDeposit _depositType) external;
    function getMinipoolAt(uint256 _index) external view returns(address);
    function getMinipoolPosition(address _minipool) external view returns (int256);
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

pragma solidity >0.5.0 <0.9.0;

// SPDX-License-Identifier: GPL-3.0-only

interface RocketNetworkFeesInterface {
    function getNodeDemand() external view returns (int256);
    function getNodeFee() external view returns (uint256);
    function getNodeFeeByDemand(int256 _nodeDemand) external view returns (uint256);
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

pragma solidity >0.5.0 <0.9.0;

// SPDX-License-Identifier: GPL-3.0-only

import "../../types/MinipoolDeposit.sol";

interface RocketNodeDepositInterface {
    function getNodeDepositCredit(address _nodeAddress) external view returns (uint256);
    function getNodeEthBalance(address _nodeAddress) external view returns (uint256);
    function getNodeCreditAndBalance(address _nodeAddress) external view returns (uint256);
    function getNodeUsableCreditAndBalance(address _nodeAddress) external view returns (uint256);
    function getNodeUsableCredit(address _nodeAddress) external view returns (uint256);
    function increaseDepositCreditBalance(address _nodeOperator, uint256 _amount) external;
    function depositEthFor(address _nodeAddress) external payable;
    function withdrawEth(address _nodeAddress, uint256 _amount) external;
    function deposit(uint256 _depositAmount, uint256 _minimumNodeFee, bytes calldata _validatorPubkey, bytes calldata _validatorSignature, bytes32 _depositDataRoot, uint256 _salt, address _expectedMinipoolAddress) external payable;
    function depositWithCredit(uint256 _depositAmount, uint256 _minimumNodeFee, bytes calldata _validatorPubkey, bytes calldata _validatorSignature, bytes32 _depositDataRoot, uint256 _salt, address _expectedMinipoolAddress) external payable;
    function isValidDepositAmount(uint256 _amount) external pure returns (bool);
    function getDepositAmounts() external pure returns (uint256[] memory);
    function createVacantMinipool(uint256 _bondAmount, uint256 _minimumNodeFee, bytes calldata _validatorPubkey, uint256 _salt, address _expectedMinipoolAddress, uint256 _currentBalance) external;
    function increaseEthMatched(address _nodeAddress, uint256 _amount) external;
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

pragma solidity >0.5.0 <0.9.0;

// SPDX-License-Identifier: GPL-3.0-only

interface RocketDAOProtocolSettingsDepositInterface {
    function getDepositEnabled() external view returns (bool);
    function getAssignDepositsEnabled() external view returns (bool);
    function getMinimumDeposit() external view returns (uint256);
    function getMaximumDepositPoolSize() external view returns (uint256);
    function getMaximumDepositAssignments() external view returns (uint256);
    function getMaximumDepositSocialisedAssignments() external view returns (uint256);
    function getDepositFee() external view returns (uint256);
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

pragma solidity >0.5.0 <0.9.0;

// SPDX-License-Identifier: GPL-3.0-only

import "../../../../types/MinipoolDeposit.sol";

interface RocketDAOProtocolSettingsMinipoolInterface {
    function getLaunchBalance() external view returns (uint256);
    function getPreLaunchValue() external pure returns (uint256);
    function getDepositUserAmount(MinipoolDeposit _depositType) external view returns (uint256);
    function getFullDepositUserAmount() external view returns (uint256);
    function getHalfDepositUserAmount() external view returns (uint256);
    function getVariableDepositAmount() external view returns (uint256);
    function getSubmitWithdrawableEnabled() external view returns (bool);
    function getBondReductionEnabled() external view returns (bool);
    function getLaunchTimeout() external view returns (uint256);
    function getMaximumCount() external view returns (uint256);
    function isWithinUserDistributeWindow(uint256 _time) external view returns (bool);
    function hasUserDistributeWindowPassed(uint256 _time) external view returns (bool);
    function getUserDistributeWindowStart() external view returns (uint256);
    function getUserDistributeWindowLength() external view returns (uint256);
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

pragma solidity >0.5.0 <0.9.0;

// SPDX-License-Identifier: GPL-3.0-only

interface RocketDAOProtocolSettingsNodeInterface {
    function getRegistrationEnabled() external view returns (bool);
    function getSmoothingPoolRegistrationEnabled() external view returns (bool);
    function getDepositEnabled() external view returns (bool);
    function getVacantMinipoolsEnabled() external view returns (bool);
    function getMinimumPerMinipoolStake() external view returns (uint256);
    function getMaximumPerMinipoolStake() external view returns (uint256);
    function getMaximumStakeForVotingPower() external view returns (uint256);
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

pragma solidity >0.5.0 <0.9.0;

// SPDX-License-Identifier: GPL-3.0-only

interface RocketDAOProtocolSettingsNetworkInterface {
    function getNodeConsensusThreshold() external view returns (uint256);
    function getNodePenaltyThreshold() external view returns (uint256);
    function getPerPenaltyRate() external view returns (uint256);
    function getSubmitBalancesEnabled() external view returns (bool);
    function getSubmitBalancesFrequency() external view returns (uint256);
    function getSubmitPricesEnabled() external view returns (bool);
    function getSubmitPricesFrequency() external view returns (uint256);
    function getMinimumNodeFee() external view returns (uint256);
    function getTargetNodeFee() external view returns (uint256);
    function getMaximumNodeFee() external view returns (uint256);
    function getNodeFeeDemandRange() external view returns (uint256);
    function getTargetRethCollateralRate() external view returns (uint256);
    function getRethDepositDelay() external view returns (uint256);
    function getSubmitRewardsEnabled() external view returns (bool);
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

pragma solidity >0.5.0 <0.9.0;

// SPDX-License-Identifier: GPL-3.0-only

interface RocketDAONodeTrustedInterface {
    function getBootstrapModeDisabled() external view returns (bool);
    function getMemberQuorumVotesRequired() external view returns (uint256);
    function getMemberAt(uint256 _index) external view returns (address);
    function getMemberCount() external view returns (uint256);
    function getMemberMinRequired() external view returns (uint256);
    function getMemberIsValid(address _nodeAddress) external view returns (bool);
    function getMemberLastProposalTime(address _nodeAddress) external view returns (uint256);
    function getMemberID(address _nodeAddress) external view returns (string memory);
    function getMemberUrl(address _nodeAddress) external view returns (string memory);
    function getMemberJoinedTime(address _nodeAddress) external view returns (uint256);
    function getMemberProposalExecutedTime(string memory _proposalType, address _nodeAddress) external view returns (uint256);
    function getMemberRPLBondAmount(address _nodeAddress) external view returns (uint256);
    function getMemberIsChallenged(address _nodeAddress) external view returns (bool);
    function getMemberUnbondedValidatorCount(address _nodeAddress) external view returns (uint256);
    function incrementMemberUnbondedValidatorCount(address _nodeAddress) external;
    function decrementMemberUnbondedValidatorCount(address _nodeAddress) external;
    function bootstrapMember(string memory _id, string memory _url, address _nodeAddress) external;
    function bootstrapSettingUint(string memory _settingContractName, string memory _settingPath, uint256 _value) external;
    function bootstrapSettingBool(string memory _settingContractName, string memory _settingPath, bool _value) external;
    function bootstrapUpgrade(string memory _type, string memory _name, string memory _contractAbi, address _contractAddress) external;
    function bootstrapDisable(bool _confirmDisableBootstrapMode) external;
    function memberJoinRequired(string memory _id, string memory _url) external;
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

pragma solidity >0.5.0 <0.9.0;

// SPDX-License-Identifier: GPL-3.0-only

interface RocketDAONodeTrustedSettingsMembersInterface {
    function getQuorum() external view returns (uint256);
    function getRPLBond() external view returns(uint256);
    function getMinipoolUnbondedMax() external view returns(uint256);
    function getMinipoolUnbondedMinFee() external view returns(uint256);
    function getChallengeCooldown() external view returns(uint256);
    function getChallengeWindow() external view returns(uint256);
    function getChallengeCost() external view returns(uint256);
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

pragma solidity >0.5.0 <0.9.0;

// SPDX-License-Identifier: GPL-3.0-only

// A struct containing all the information on-chain about a specific node

struct NodeDetails {
    bool exists;
    uint256 registrationTime;
    string timezoneLocation;
    bool feeDistributorInitialised;
    address feeDistributorAddress;
    uint256 rewardNetwork;
    uint256 rplStake;
    uint256 effectiveRPLStake;
    uint256 minimumRPLStake;
    uint256 maximumRPLStake;
    uint256 ethMatched;
    uint256 ethMatchedLimit;
    uint256 minipoolCount;
    uint256 balanceETH;
    uint256 balanceRETH;
    uint256 balanceRPL;
    uint256 balanceOldRPL;
    uint256 depositCreditBalance;
    uint256 distributorBalanceUserETH;
    uint256 distributorBalanceNodeETH;
    address withdrawalAddress;
    address pendingWithdrawalAddress;
    bool smoothingPoolRegistrationState;
    uint256 smoothingPoolRegistrationChanged;
    address nodeAddress;
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

// SPDX-License-Identifier: GPL-3.0-only
pragma solidity >0.5.0 <0.9.0;
pragma abicoder v2;

import "../../types/NodeDetails.sol";

interface RocketNodeManagerInterface {

    // Structs
    struct TimezoneCount {
        string timezone;
        uint256 count;
    }

    function getNodeCount() external view returns (uint256);
    function getNodeCountPerTimezone(uint256 offset, uint256 limit) external view returns (TimezoneCount[] memory);
    function getNodeAt(uint256 _index) external view returns (address);
    function getNodeExists(address _nodeAddress) external view returns (bool);
    function getNodeWithdrawalAddress(address _nodeAddress) external view returns (address);
    function getNodePendingWithdrawalAddress(address _nodeAddress) external view returns (address);
    function getNodeRPLWithdrawalAddress(address _nodeAddress) external view returns (address);
    function getNodeRPLWithdrawalAddressIsSet(address _nodeAddress) external view returns (bool);
    function unsetRPLWithdrawalAddress(address _nodeAddress) external;
    function setRPLWithdrawalAddress(address _nodeAddress, address _newRPLWithdrawalAddress, bool _confirm) external;
    function confirmRPLWithdrawalAddress(address _nodeAddress) external;
    function getNodePendingRPLWithdrawalAddress(address _nodeAddress) external view returns (address);
    function getNodeTimezoneLocation(address _nodeAddress) external view returns (string memory);
    function registerNode(string calldata _timezoneLocation) external;
    function getNodeRegistrationTime(address _nodeAddress) external view returns (uint256);
    function setTimezoneLocation(string calldata _timezoneLocation) external;
    function setRewardNetwork(address _nodeAddress, uint256 network) external;
    function getRewardNetwork(address _nodeAddress) external view returns (uint256);
    function getFeeDistributorInitialised(address _nodeAddress) external view returns (bool);
    function initialiseFeeDistributor() external;
    function getAverageNodeFee(address _nodeAddress) external view returns (uint256);
    function setSmoothingPoolRegistrationState(bool _state) external;
    function getSmoothingPoolRegistrationState(address _nodeAddress) external returns (bool);
    function getSmoothingPoolRegistrationChanged(address _nodeAddress) external returns (uint256);
    function getSmoothingPoolRegisteredNodeCount(uint256 _offset, uint256 _limit) external view returns (uint256);
    function getNodeDetails(address _nodeAddress) external view returns (NodeDetails memory);
    function getNodeAddresses(uint256 _offset, uint256 _limit) external view returns (address[] memory);
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity >0.5.0 <0.9.0;

/**
 * @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);
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

import "./IERC20.sol";

pragma solidity >0.5.0 <0.9.0;

interface IERC20Burnable is IERC20 {
    function burn(uint256 amount) external;
    function burnFrom(address account, uint256 amount) external;
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

pragma solidity >0.5.0 <0.9.0;

// SPDX-License-Identifier: GPL-3.0-only
import "./util/IERC20Burnable.sol";

interface RocketVaultInterface {
    function balanceOf(string memory _networkContractName) external view returns (uint256);
    function depositEther() external payable;
    function withdrawEther(uint256 _amount) external;
    function depositToken(string memory _networkContractName, IERC20 _tokenAddress, uint256 _amount) external;
    function withdrawToken(address _withdrawalAddress, IERC20 _tokenAddress, uint256 _amount) external;
    function balanceOfToken(string memory _networkContractName, IERC20 _tokenAddress) external view returns (uint256);
    function transferToken(string memory _networkContractName, IERC20 _tokenAddress, uint256 _amount) external;
    function burnToken(IERC20Burnable _tokenAddress, uint256 _amount) external;
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

// SPDX-License-Identifier: GPL-3.0-only
pragma solidity >0.5.0 <0.9.0;

interface RocketNodeStakingInterface {
    function getTotalRPLStake() external view returns (uint256);
    function getNodeRPLStake(address _nodeAddress) external view returns (uint256);
    function getNodeETHMatched(address _nodeAddress) external view returns (uint256);
    function getNodeETHProvided(address _nodeAddress) external view returns (uint256);
    function getNodeETHCollateralisationRatio(address _nodeAddress) external view returns (uint256);
    function getNodeRPLStakedTime(address _nodeAddress) external view returns (uint256);
    function getNodeEffectiveRPLStake(address _nodeAddress) external view returns (uint256);
    function getNodeMinimumRPLStake(address _nodeAddress) external view returns (uint256);
    function getNodeMaximumRPLStake(address _nodeAddress) external view returns (uint256);
    function getNodeETHMatchedLimit(address _nodeAddress) external view returns (uint256);
    function getRPLLockingAllowed(address _nodeAddress) external view returns (bool);
    function stakeRPL(uint256 _amount) external;
    function stakeRPLFor(address _nodeAddress, uint256 _amount) external;
    function setRPLLockingAllowed(address _nodeAddress, bool _allowed) external;
    function setStakeRPLForAllowed(address _caller, bool _allowed) external;
    function setStakeRPLForAllowed(address _nodeAddress, address _caller, bool _allowed) external;
    function getNodeRPLLocked(address _nodeAddress) external view returns (uint256);
    function lockRPL(address _nodeAddress, uint256 _amount) external;
    function unlockRPL(address _nodeAddress, uint256 _amount) external;
    function transferRPL(address _from, address _to, uint256 _amount) external;
    function burnRPL(address _from, uint256 _amount) external;
    function withdrawRPL(uint256 _amount) external;
    function withdrawRPL(address _nodeAddress, uint256 _amount) external;
    function slashRPL(address _nodeAddress, uint256 _ethSlashAmount) external;
}

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

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

// SPDX-License-Identifier: GPL-3.0-only
pragma solidity >0.5.0 <0.9.0;

struct Checkpoint224 {
    uint32 _block;
    uint224 _value;
}

/// @notice Accounting for snapshotting of values based on block numbers
interface RocketNetworkSnapshotsInterface {
    function push(bytes32 _key, uint224 _value) external;
    function length(bytes32 _key) external view returns (uint256);
    function latest(bytes32 _key) external view returns (bool, uint32, uint224);
    function latestBlock(bytes32 _key) external view returns (uint32);
    function latestValue(bytes32 _key) external view returns (uint224);
    function lookup(bytes32 _key, uint32 _block) external view returns (uint224);
    function lookupRecent(bytes32 _key, uint32 _block, uint256 _recency) external view returns (uint224);
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

// SPDX-License-Identifier: MIT
// Copyright (c) 2016-2023 zOS Global Limited and contributors
// Adapted from OpenZeppelin `Checkpoints` contract
pragma solidity 0.8.18;

import "@openzeppelin4/contracts/utils/math/Math.sol";

import "../RocketBase.sol";
import "../../interface/network/RocketNetworkSnapshotsInterface.sol";

/// @notice Accounting for snapshotting of values based on block numbers
contract RocketNetworkSnapshots is RocketBase, RocketNetworkSnapshotsInterface {

    constructor(RocketStorageInterface _rocketStorageAddress) RocketBase(_rocketStorageAddress) {
        // Set contract version
        version = 1;

        // Setup for if this contract is being deployed as part of a new instance deployment
        if (!rocketStorage.getDeployedStatus()) {
            _insert(keccak256("network.prices.rpl"), 0.01 ether);
            _insert(keccak256("node.voting.power.stake.maximum"), 1.5 ether);
        }
    }

    function push(bytes32 _key, uint224 _value) onlyLatestContract("rocketNetworkSnapshots", address(this)) onlyLatestNetworkContract external {
        _insert(_key, _value);
    }

    function length(bytes32 _key) public view returns (uint256) {
        return rocketStorage.getUint(keccak256(abi.encodePacked("snapshot.length", _key)));
    }

    function latest(bytes32 _key) external view returns (bool, uint32, uint224) {
        uint256 len = length(_key);
        if (len == 0) {
            return (false, 0, 0);
        }
        Checkpoint224 memory checkpoint = _load(_key, len - 1);
        return (true, checkpoint._block, checkpoint._value);
    }

    function latestBlock(bytes32 _key) external view returns (uint32) {
        uint256 len = length(_key);
        return len == 0 ? 0 : _blockAt(_key, len - 1);
    }

    function latestValue(bytes32 _key) external view returns (uint224) {
        uint256 len = length(_key);
        return len == 0 ? 0 : _valueAt(_key, len - 1);
    }

    function lookup(bytes32 _key, uint32 _block) external view returns (uint224) {
        uint256 len = length(_key);
        uint256 pos = _binaryLookup(_key, _block, 0, len);
        return pos == 0 ? 0 : _valueAt(_key, pos - 1);
    }

    function lookupRecent(bytes32 _key, uint32 _block, uint256 _recency) external view returns (uint224) {
        uint256 len = length(_key);

        uint256 low = 0;
        uint256 high = len;

        if (len > 5 && len > _recency) {
            uint256 mid = len - _recency;
            if (_block < _blockAt(_key, mid)) {
                high = mid;
            } else {
                low = mid + 1;
            }
        }

        uint256 pos = _binaryLookup(_key, _block, low, high);

        return pos == 0 ? 0 : _valueAt(_key, pos - 1);
    }

    function _insert(bytes32 _key, uint224 _value) private {
        uint32 blockNumber = uint32(block.number);
        uint256 pos = length(_key);

        if (pos > 0) {
            Checkpoint224 memory last = _load(_key, pos - 1);

            // Checkpoint keys must be non-decreasing.
            require (last._block <= blockNumber, "Unordered snapshot insertion");

            // Update or push new checkpoint
            if (last._block == blockNumber) {
                last._value = _value;
                _set(_key, pos - 1, last);
            } else {
                _push(_key, Checkpoint224({_block: blockNumber, _value: _value}));
            }
        } else {
            _push(_key, Checkpoint224({_block: blockNumber, _value: _value}));
        }
    }

    function _binaryLookup(
        bytes32 _key,
        uint32 _block,
        uint256 _low,
        uint256 _high
    ) private view returns (uint256) {
        while (_low < _high) {
            uint256 mid = Math.average(_low, _high);
            if (_blockAt(_key, mid) > _block) {
                _high = mid;
            } else {
                _low = mid + 1;
            }
        }
        return _high;
    }

    function _load(bytes32 _key, uint256 _pos) private view returns (Checkpoint224 memory) {
        bytes32 key = bytes32(uint256(_key) + _pos);
        bytes32 raw = rocketStorage.getBytes32(key);
        Checkpoint224 memory result;
        result._block = uint32(uint256(raw) >> 224);
        result._value = uint224(uint256(raw));
        return result;
    }

    function _blockAt(bytes32 _key, uint256 _pos) private view returns (uint32) {
        bytes32 key = bytes32(uint256(_key) + _pos);
        bytes32 raw = rocketStorage.getBytes32(key);
        return uint32(uint256(raw) >> 224);
    }

    function _valueAt(bytes32 _key, uint256 _pos) private view returns (uint224) {
        bytes32 key = bytes32(uint256(_key) + _pos);
        bytes32 raw = rocketStorage.getBytes32(key);
        return uint224(uint256(raw));
    }

    function _push(bytes32 _key, Checkpoint224 memory _item) private {
        bytes32 lengthKey = keccak256(abi.encodePacked("snapshot.length", _key));
        uint256 snapshotLength = rocketStorage.getUint(lengthKey);
        bytes32 key = bytes32(uint256(_key) + snapshotLength);
        rocketStorage.setUint(lengthKey, snapshotLength + 1);
        rocketStorage.setBytes32(key, _encode(_item));
    }

    function _set(bytes32 _key, uint256 _pos, Checkpoint224 memory _item) private {
        bytes32 key = bytes32(uint256(_key) + _pos);
        rocketStorage.setBytes32(key, _encode(_item));
    }

    function _encode(Checkpoint224 memory _item) private pure returns (bytes32) {
        return bytes32(
            uint256(_item._block) << 224 | uint256(_item._value)
        );
    }
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

pragma solidity >0.5.0 <0.9.0;

// SPDX-License-Identifier: GPL-3.0-only

interface RocketVaultWithdrawerInterface {
    function receiveVaultWithdrawalETH() external payable; 
}

/**
   *       .
   *      / \
   *     |.'.|
   *     |'.'|
   *   ,'|   |'.
   *  |,-'-|-'-.|
   *   __|_| |         _        _      _____           _
   *  | ___ \|        | |      | |    | ___ \         | |
   *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
   *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
   *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
   *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
   * +---------------------------------------------------+
   * |    DECENTRALISED STAKING PROTOCOL FOR ETHEREUM    |
   * +---------------------------------------------------+
   *
   *  Rocket Pool is a first-of-its-kind Ethereum staking pool protocol, designed to
   *  be community-owned, decentralised, permissionless, & trustless.
   *
   *  For more information about Rocket Pool, visit https://rocketpool.net
   *
   *  Authored by the Rocket Pool Core Team
   *  Contributors: https://github.com/rocket-pool/rocketpool/graphs/contributors
   *  A special thanks to the Rocket Pool community for all their contributions.
   *
   */

// SPDX-License-Identifier: GPL-3.0-only
pragma solidity >0.5.0 <0.9.0;

interface RocketNetworkVotingInterface {
    function initialiseVotingFor(address _nodeAddress) external;
    function initialiseVoting() external;
    function initialiseVotingWithDelegate(address _delegate) external;
    function getVotingInitialised(address _nodeAddress) external view returns (bool);
    function getNodeCount(uint32 _block) external view returns (uint256);
    function getVotingPower(address _nodeAddress, uint32 _block) external view returns (uint256);
    function setDelegate(address _newDelegate) external;
    function getDelegate(address _nodeAddress, uint32 _block) external view returns (address);
    function getCurrentDelegate(address _nodeAddress) external view returns (address);
}

{
  "optimizer": {
    "enabled": true,
    "runs": 15000
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"contract RocketStorageInterface","name":"_rocketStorageAddress","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"nodeAddress","type":"address"},{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"time","type":"uint256"}],"name":"DepositFor","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"time","type":"uint256"}],"name":"DepositReceived","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"nodeAddress","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"time","type":"uint256"}],"name":"Withdrawal","type":"event"},{"inputs":[{"internalType":"uint256","name":"_bondAmount","type":"uint256"},{"internalType":"uint256","name":"_minimumNodeFee","type":"uint256"},{"internalType":"bytes","name":"_validatorPubkey","type":"bytes"},{"internalType":"uint256","name":"_salt","type":"uint256"},{"internalType":"address","name":"_expectedMinipoolAddress","type":"address"},{"internalType":"uint256","name":"_currentBalance","type":"uint256"}],"name":"createVacantMinipool","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_bondAmount","type":"uint256"},{"internalType":"uint256","name":"_minimumNodeFee","type":"uint256"},{"internalType":"bytes","name":"_validatorPubkey","type":"bytes"},{"internalType":"bytes","name":"_validatorSignature","type":"bytes"},{"internalType":"bytes32","name":"_depositDataRoot","type":"bytes32"},{"internalType":"uint256","name":"_salt","type":"uint256"},{"internalType":"address","name":"_expectedMinipoolAddress","type":"address"}],"name":"deposit","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"_nodeAddress","type":"address"}],"name":"depositEthFor","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_bondAmount","type":"uint256"},{"internalType":"uint256","name":"_minimumNodeFee","type":"uint256"},{"internalType":"bytes","name":"_validatorPubkey","type":"bytes"},{"internalType":"bytes","name":"_validatorSignature","type":"bytes"},{"internalType":"bytes32","name":"_depositDataRoot","type":"bytes32"},{"internalType":"uint256","name":"_salt","type":"uint256"},{"internalType":"address","name":"_expectedMinipoolAddress","type":"address"}],"name":"depositWithCredit","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"getDepositAmounts","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"_nodeAddress","type":"address"}],"name":"getNodeCreditAndBalance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_nodeOperator","type":"address"}],"name":"getNodeDepositCredit","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_nodeAddress","type":"address"}],"name":"getNodeEthBalance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_nodeAddress","type":"address"}],"name":"getNodeUsableCredit","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_nodeAddress","type":"address"}],"name":"getNodeUsableCreditAndBalance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_nodeAddress","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"increaseDepositCreditBalance","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_nodeAddress","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"increaseEthMatched","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"isValidDepositAmount","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"receiveVaultWithdrawalETH","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"version","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_nodeAddress","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"withdrawEth","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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0000000000000000000000001d8f8f00cfa6758d7bE78336684788Fb0ee0Fa46

-----Decoded View---------------
Arg [0] : _rocketStorageAddress (address): 0x1d8f8f00cfa6758d7bE78336684788Fb0ee0Fa46

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000001d8f8f00cfa6758d7bE78336684788Fb0ee0Fa46