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/**
  *       .
  *      / \
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \|        | |      | |    | ___ \         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
  *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
  * +---------------------------------------------------+
  * |  DECENTRALISED STAKING PROTOCOL FOR ETHEREUM 2.0  |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind ETH2 Proof of Stake protocol, designed to be community owned,
  *  decentralised, trustless and compatible with staking in Ethereum 2.0.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */

pragma solidity 0.7.6;
pragma abicoder v2;

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

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

import "../RocketBase.sol";
import "../../types/MinipoolStatus.sol";
import "../../types/NodeDetails.sol";
import "../../interface/node/RocketNodeManagerInterface.sol";
import "../../interface/dao/protocol/settings/RocketDAOProtocolSettingsNodeInterface.sol";
import "../../interface/util/AddressSetStorageInterface.sol";
import "../../interface/node/RocketNodeDistributorFactoryInterface.sol";
import "../../interface/minipool/RocketMinipoolManagerInterface.sol";
import "../../interface/node/RocketNodeDistributorInterface.sol";
import "../../interface/dao/node/settings/RocketDAONodeTrustedSettingsRewardsInterface.sol";
import "../../interface/dao/protocol/settings/RocketDAOProtocolSettingsRewardsInterface.sol";
import "../../interface/node/RocketNodeStakingInterface.sol";
import "../../interface/node/RocketNodeDepositInterface.sol";
import "../../interface/dao/protocol/settings/RocketDAOProtocolSettingsMinipoolInterface.sol";


// Node registration and management 
contract RocketNodeManager is RocketBase, RocketNodeManagerInterface {

    // Libraries
    using SafeMath for uint256;

    // Events
    event NodeRegistered(address indexed node, uint256 time);
    event NodeTimezoneLocationSet(address indexed node, uint256 time);
    event NodeRewardNetworkChanged(address indexed node, uint256 network);
    event NodeSmoothingPoolStateChanged(address indexed node, bool state);

    // Construct
    constructor(RocketStorageInterface _rocketStorageAddress) RocketBase(_rocketStorageAddress) {
        version = 3;
    }

    // Get the number of nodes in the network
    function getNodeCount() override public view returns (uint256) {
        AddressSetStorageInterface addressSetStorage = AddressSetStorageInterface(getContractAddress("addressSetStorage"));
        return addressSetStorage.getCount(keccak256(abi.encodePacked("nodes.index")));
    }

    // Get a breakdown of the number of nodes per timezone
    function getNodeCountPerTimezone(uint256 _offset, uint256 _limit) override external view returns (TimezoneCount[] memory) {
        // Get contracts
        AddressSetStorageInterface addressSetStorage = AddressSetStorageInterface(getContractAddress("addressSetStorage"));
        // Precompute node key
        bytes32 nodeKey = keccak256(abi.encodePacked("nodes.index"));
        // Calculate range
        uint256 totalNodes = addressSetStorage.getCount(nodeKey);
        uint256 max = _offset.add(_limit);
        if (max > totalNodes || _limit == 0) { max = totalNodes; }
        // Create an array with as many elements as there are potential values to return
        TimezoneCount[] memory counts = new TimezoneCount[](max.sub(_offset));
        uint256 uniqueTimezoneCount = 0;
        // Iterate the minipool range
        for (uint256 i = _offset; i < max; i++) {
            address nodeAddress = addressSetStorage.getItem(nodeKey, i);
            string memory timezone = getString(keccak256(abi.encodePacked("node.timezone.location", nodeAddress)));
            // Find existing entry in our array
            bool existing = false;
            for (uint256 j = 0; j < uniqueTimezoneCount; j++) {
                if (keccak256(bytes(counts[j].timezone)) == keccak256(bytes(timezone))) {
                    existing = true;
                    // Increment the counter
                    counts[j].count++;
                    break;
                }
            }
            // Entry was not found, so create a new one
            if (!existing) {
                counts[uniqueTimezoneCount].timezone = timezone;
                counts[uniqueTimezoneCount].count = 1;
                uniqueTimezoneCount++;
            }
        }
        // Dirty hack to cut unused elements off end of return value
        assembly {
            mstore(counts, uniqueTimezoneCount)
        }
        return counts;
    }

    // Get a node address by index
    function getNodeAt(uint256 _index) override external view returns (address) {
        AddressSetStorageInterface addressSetStorage = AddressSetStorageInterface(getContractAddress("addressSetStorage"));
        return addressSetStorage.getItem(keccak256(abi.encodePacked("nodes.index")), _index);
    }

    // Check whether a node exists
    function getNodeExists(address _nodeAddress) override public view returns (bool) {
        return getBool(keccak256(abi.encodePacked("node.exists", _nodeAddress)));
    }

    // Get a node's current withdrawal address
    function getNodeWithdrawalAddress(address _nodeAddress) override public view returns (address) {
        return rocketStorage.getNodeWithdrawalAddress(_nodeAddress);
    }

    // Get a node's pending withdrawal address
    function getNodePendingWithdrawalAddress(address _nodeAddress) override public view returns (address) {
        return rocketStorage.getNodePendingWithdrawalAddress(_nodeAddress);
    }

    // Get a node's timezone location
    function getNodeTimezoneLocation(address _nodeAddress) override public view returns (string memory) {
        return getString(keccak256(abi.encodePacked("node.timezone.location", _nodeAddress)));
    }

    // Register a new node with Rocket Pool
    function registerNode(string calldata _timezoneLocation) override external onlyLatestContract("rocketNodeManager", address(this)) {
        // Load contracts
        RocketDAOProtocolSettingsNodeInterface rocketDAOProtocolSettingsNode = RocketDAOProtocolSettingsNodeInterface(getContractAddress("rocketDAOProtocolSettingsNode"));
        AddressSetStorageInterface addressSetStorage = AddressSetStorageInterface(getContractAddress("addressSetStorage"));
        // Check node settings
        require(rocketDAOProtocolSettingsNode.getRegistrationEnabled(), "Rocket Pool node registrations are currently disabled");
        // Check timezone location
        require(bytes(_timezoneLocation).length >= 4, "The timezone location is invalid");
        // Initialise node data
        setBool(keccak256(abi.encodePacked("node.exists", msg.sender)), true);
        setString(keccak256(abi.encodePacked("node.timezone.location", msg.sender)), _timezoneLocation);
        // Add node to index
        addressSetStorage.addItem(keccak256(abi.encodePacked("nodes.index")), msg.sender);
        // Initialise fee distributor for this node
        _initialiseFeeDistributor(msg.sender);
        // Set node registration time (uses old storage key name for backwards compatibility)
        setUint(keccak256(abi.encodePacked("rewards.pool.claim.contract.registered.time", "rocketClaimNode", msg.sender)), block.timestamp);
        // Emit node registered event
        emit NodeRegistered(msg.sender, block.timestamp);
    }

    // Get's the timestamp of when a node was registered
    function getNodeRegistrationTime(address _nodeAddress) onlyRegisteredNode(_nodeAddress) override public view returns (uint256) {
        return getUint(keccak256(abi.encodePacked("rewards.pool.claim.contract.registered.time", "rocketClaimNode", _nodeAddress)));
    }

    // Set a node's timezone location
    // Only accepts calls from registered nodes
    function setTimezoneLocation(string calldata _timezoneLocation) override external onlyLatestContract("rocketNodeManager", address(this)) onlyRegisteredNode(msg.sender) {
        // Check timezone location
        require(bytes(_timezoneLocation).length >= 4, "The timezone location is invalid");
        // Set timezone location
        setString(keccak256(abi.encodePacked("node.timezone.location", msg.sender)), _timezoneLocation);
        // Emit node timezone location set event
        emit NodeTimezoneLocationSet(msg.sender, block.timestamp);
    }

    // Returns true if node has initialised their fee distributor contract
    function getFeeDistributorInitialised(address _nodeAddress) override public view returns (bool) {
        // Load contracts
        RocketNodeDistributorFactoryInterface rocketNodeDistributorFactory = RocketNodeDistributorFactoryInterface(getContractAddress("rocketNodeDistributorFactory"));
        // Get distributor address
        address contractAddress = rocketNodeDistributorFactory.getProxyAddress(_nodeAddress);
        // Check if contract exists at that address
        uint32 codeSize;
        assembly {
            codeSize := extcodesize(contractAddress)
        }
        return codeSize > 0;
    }

    // Node operators created before the distributor was implemented must call this to setup their distributor contract
    function initialiseFeeDistributor() override external onlyLatestContract("rocketNodeManager", address(this)) onlyRegisteredNode(msg.sender) {
        // Prevent multiple calls
        require(!getFeeDistributorInitialised(msg.sender), "Already initialised");
        // Load contracts
        RocketMinipoolManagerInterface rocketMinipoolManager = RocketMinipoolManagerInterface(getContractAddress("rocketMinipoolManager"));
        // Calculate and set current average fee numerator
        uint256 count = rocketMinipoolManager.getNodeMinipoolCount(msg.sender);
        if (count > 0){
            uint256 numerator = 0;
            // Note: this loop is safe as long as all current node operators at the time of upgrade have few enough minipools
            for (uint256 i = 0; i < count; i++) {
                RocketMinipoolInterface minipool = RocketMinipoolInterface(rocketMinipoolManager.getNodeMinipoolAt(msg.sender, i));
                if (minipool.getStatus() == MinipoolStatus.Staking){
                    numerator = numerator.add(minipool.getNodeFee());
                }
            }
            setUint(keccak256(abi.encodePacked("node.average.fee.numerator", msg.sender)), numerator);
        }
        // Create the distributor contract
        _initialiseFeeDistributor(msg.sender);
    }

    // Deploys the fee distributor contract for a given node
    function _initialiseFeeDistributor(address _nodeAddress) internal {
        // Load contracts
        RocketNodeDistributorFactoryInterface rocketNodeDistributorFactory = RocketNodeDistributorFactoryInterface(getContractAddress("rocketNodeDistributorFactory"));
        // Create the distributor proxy
        rocketNodeDistributorFactory.createProxy(_nodeAddress);
    }

    // Calculates a nodes average node fee
    function getAverageNodeFee(address _nodeAddress) override external view returns (uint256) {
        // Load contracts
        RocketMinipoolManagerInterface rocketMinipoolManager = RocketMinipoolManagerInterface(getContractAddress("rocketMinipoolManager"));
        RocketNodeDepositInterface rocketNodeDeposit = RocketNodeDepositInterface(getContractAddress("rocketNodeDeposit"));
        RocketDAOProtocolSettingsMinipoolInterface rocketDAOProtocolSettingsMinipool = RocketDAOProtocolSettingsMinipoolInterface(getContractAddress("rocketDAOProtocolSettingsMinipool"));
        // Get valid deposit amounts
        uint256[] memory depositSizes = rocketNodeDeposit.getDepositAmounts();
        // Setup memory for calculations
        uint256[] memory depositWeights = new uint256[](depositSizes.length);
        uint256[] memory depositCounts = new uint256[](depositSizes.length);
        uint256 depositWeightTotal;
        uint256 totalCount;
        uint256 launchAmount = rocketDAOProtocolSettingsMinipool.getLaunchBalance();
        // Retrieve the number of staking minipools per deposit size
        for (uint256 i = 0; i < depositSizes.length; i++) {
            depositCounts[i] = rocketMinipoolManager.getNodeStakingMinipoolCountBySize(_nodeAddress, depositSizes[i]);
            totalCount = totalCount.add(depositCounts[i]);
        }
        if (totalCount == 0) {
            return 0;
        }
        // Calculate the weights of each deposit size
        for (uint256 i = 0; i < depositSizes.length; i++) {
            depositWeights[i] = launchAmount.sub(depositSizes[i]).mul(depositCounts[i]);
            depositWeightTotal = depositWeightTotal.add(depositWeights[i]);
        }
        for (uint256 i = 0; i < depositSizes.length; i++) {
            depositWeights[i] = depositWeights[i].mul(calcBase).div(depositWeightTotal);
        }
        // Calculate the weighted average
        uint256 weightedAverage = 0;
        for (uint256 i = 0; i < depositSizes.length; i++) {
            if (depositCounts[i] > 0) {
                bytes32 numeratorKey;
                if (depositSizes[i] == 16 ether) {
                    numeratorKey = keccak256(abi.encodePacked("node.average.fee.numerator", _nodeAddress));
                } else {
                    numeratorKey = keccak256(abi.encodePacked("node.average.fee.numerator", _nodeAddress, depositSizes[i]));
                }
                uint256 numerator = getUint(numeratorKey);
                weightedAverage = weightedAverage.add(numerator.mul(depositWeights[i]).div(depositCounts[i]));
            }
        }
        return weightedAverage.div(calcBase);
    }

    // Designates which network a node would like their rewards relayed to
    function setRewardNetwork(address _nodeAddress, uint256 _network) override external onlyLatestContract("rocketNodeManager", address(this)) {
        // Confirm the transaction is from the node's current withdrawal address
        address withdrawalAddress = rocketStorage.getNodeWithdrawalAddress(_nodeAddress);
        require(withdrawalAddress == msg.sender, "Only a tx from a node's withdrawal address can change reward network");
        // Check network is enabled
        RocketDAONodeTrustedSettingsRewardsInterface rocketDAONodeTrustedSettingsRewards = RocketDAONodeTrustedSettingsRewardsInterface(getContractAddress("rocketDAONodeTrustedSettingsRewards"));
        require(rocketDAONodeTrustedSettingsRewards.getNetworkEnabled(_network), "Network is not enabled");
        // Set the network
        setUint(keccak256(abi.encodePacked("node.reward.network", _nodeAddress)), _network);
        // Emit event
        emit NodeRewardNetworkChanged(_nodeAddress, _network);
    }

    // Returns which network a node has designated as their desired reward network
    function getRewardNetwork(address _nodeAddress) override public view onlyLatestContract("rocketNodeManager", address(this)) returns (uint256) {
        return getUint(keccak256(abi.encodePacked("node.reward.network", _nodeAddress)));
    }

    // Allows a node to register or deregister from the smoothing pool
    function setSmoothingPoolRegistrationState(bool _state) override external onlyLatestContract("rocketNodeManager", address(this)) onlyRegisteredNode(msg.sender) {
        // Ensure registration is enabled
        RocketDAOProtocolSettingsNodeInterface daoSettingsNode = RocketDAOProtocolSettingsNodeInterface(getContractAddress("rocketDAOProtocolSettingsNode"));
        require(daoSettingsNode.getSmoothingPoolRegistrationEnabled(), "Smoothing pool registrations are not active");
        // Precompute storage keys
        bytes32 changeKey = keccak256(abi.encodePacked("node.smoothing.pool.changed.time", msg.sender));
        bytes32 stateKey = keccak256(abi.encodePacked("node.smoothing.pool.state", msg.sender));
        // Get from the DAO settings
        RocketDAOProtocolSettingsRewardsInterface daoSettingsRewards = RocketDAOProtocolSettingsRewardsInterface(getContractAddress("rocketDAOProtocolSettingsRewards"));
        uint256 rewardInterval = daoSettingsRewards.getRewardsClaimIntervalTime();
        // Ensure node operator has waited the required time
        uint256 lastChange = getUint(changeKey);
        require(block.timestamp >= lastChange.add(rewardInterval), "Not enough time has passed since changing state");
        // Ensure state is actually changing
        require(getBool(stateKey) != _state, "Invalid state change");
        // Update registration state
        setUint(changeKey, block.timestamp);
        setBool(stateKey, _state);
        // Emit state change event
        emit NodeSmoothingPoolStateChanged(msg.sender, _state);
    }

    // Returns whether a node is registered or not from the smoothing pool
    function getSmoothingPoolRegistrationState(address _nodeAddress) override public view returns (bool) {
        return getBool(keccak256(abi.encodePacked("node.smoothing.pool.state", _nodeAddress)));
    }

    // Returns the timestamp of when the node last changed their smoothing pool registration state
    function getSmoothingPoolRegistrationChanged(address _nodeAddress) override external view returns (uint256) {
        return getUint(keccak256(abi.encodePacked("node.smoothing.pool.changed.time", _nodeAddress)));
    }

    // Returns the sum of nodes that are registered for the smoothing pool between _offset and (_offset + _limit)
    function getSmoothingPoolRegisteredNodeCount(uint256 _offset, uint256 _limit) override external view returns (uint256) {
        // Get contracts
        AddressSetStorageInterface addressSetStorage = AddressSetStorageInterface(getContractAddress("addressSetStorage"));
        // Precompute node key
        bytes32 nodeKey = keccak256(abi.encodePacked("nodes.index"));
        // Iterate over the requested minipool range
        uint256 totalNodes = getNodeCount();
        uint256 max = _offset.add(_limit);
        if (max > totalNodes || _limit == 0) { max = totalNodes; }
        uint256 count = 0;
        for (uint256 i = _offset; i < max; i++) {
            address nodeAddress = addressSetStorage.getItem(nodeKey, i);
            if (getSmoothingPoolRegistrationState(nodeAddress)) {
                count++;
            }
        }
        return count;
    }

    /// @notice Convenience function to return all on-chain details about a given node
    /// @param _nodeAddress Address of the node to query details for
    function getNodeDetails(address _nodeAddress) override public view returns (NodeDetails memory nodeDetails) {
        // Get contracts
        RocketNodeStakingInterface rocketNodeStaking = RocketNodeStakingInterface(getContractAddress("rocketNodeStaking"));
        RocketNodeDepositInterface rocketNodeDeposit = RocketNodeDepositInterface(getContractAddress("rocketNodeDeposit"));
        RocketNodeDistributorFactoryInterface rocketNodeDistributorFactory = RocketNodeDistributorFactoryInterface(getContractAddress("rocketNodeDistributorFactory"));
        RocketMinipoolManagerInterface rocketMinipoolManager = RocketMinipoolManagerInterface(getContractAddress("rocketMinipoolManager"));
        IERC20 rocketTokenRETH = IERC20(getContractAddress("rocketTokenRETH"));
        IERC20 rocketTokenRPL = IERC20(getContractAddress("rocketTokenRPL"));
        IERC20 rocketTokenRPLFixedSupply = IERC20(getContractAddress("rocketTokenRPLFixedSupply"));
        // Node details
        nodeDetails.nodeAddress = _nodeAddress;
        nodeDetails.withdrawalAddress = rocketStorage.getNodeWithdrawalAddress(_nodeAddress);
        nodeDetails.pendingWithdrawalAddress = rocketStorage.getNodePendingWithdrawalAddress(_nodeAddress);
        nodeDetails.exists = getNodeExists(_nodeAddress);
        nodeDetails.registrationTime = getNodeRegistrationTime(_nodeAddress);
        nodeDetails.timezoneLocation = getNodeTimezoneLocation(_nodeAddress);
        nodeDetails.feeDistributorInitialised = getFeeDistributorInitialised(_nodeAddress);
        nodeDetails.rewardNetwork = getRewardNetwork(_nodeAddress);
        // Staking details
        nodeDetails.rplStake = rocketNodeStaking.getNodeRPLStake(_nodeAddress);
        nodeDetails.effectiveRPLStake = rocketNodeStaking.getNodeEffectiveRPLStake(_nodeAddress);
        nodeDetails.minimumRPLStake = rocketNodeStaking.getNodeMinimumRPLStake(_nodeAddress);
        nodeDetails.maximumRPLStake = rocketNodeStaking.getNodeMaximumRPLStake(_nodeAddress);
        nodeDetails.ethMatched = rocketNodeStaking.getNodeETHMatched(_nodeAddress);
        nodeDetails.ethMatchedLimit = rocketNodeStaking.getNodeETHMatchedLimit(_nodeAddress);
        // Distributor details
        nodeDetails.feeDistributorAddress = rocketNodeDistributorFactory.getProxyAddress(_nodeAddress);
        uint256 distributorBalance = nodeDetails.feeDistributorAddress.balance;
        RocketNodeDistributorInterface distributor = RocketNodeDistributorInterface(nodeDetails.feeDistributorAddress);
        nodeDetails.distributorBalanceNodeETH = distributor.getNodeShare();
        nodeDetails.distributorBalanceUserETH = distributorBalance.sub(nodeDetails.distributorBalanceNodeETH);
        // Minipool details
        nodeDetails.minipoolCount = rocketMinipoolManager.getNodeMinipoolCount(_nodeAddress);
        // Balance details
        nodeDetails.balanceETH = _nodeAddress.balance;
        nodeDetails.balanceRETH = rocketTokenRETH.balanceOf(_nodeAddress);
        nodeDetails.balanceRPL = rocketTokenRPL.balanceOf(_nodeAddress);
        nodeDetails.balanceOldRPL = rocketTokenRPLFixedSupply.balanceOf(_nodeAddress);
        nodeDetails.depositCreditBalance = rocketNodeDeposit.getNodeDepositCredit(_nodeAddress);
        // Return
        return nodeDetails;
    }

    /// @notice Returns a slice of the node operator address set
    /// @param _offset The starting point into the slice
    /// @param _limit The maximum number of results to return
    function getNodeAddresses(uint256 _offset, uint256 _limit) override external view returns (address[] memory) {
        // Get contracts
        AddressSetStorageInterface addressSetStorage = AddressSetStorageInterface(getContractAddress("addressSetStorage"));
        // Precompute node key
        bytes32 nodeKey = keccak256(abi.encodePacked("nodes.index"));
        // Iterate over the requested minipool range
        uint256 totalNodes = getNodeCount();
        uint256 max = _offset.add(_limit);
        if (max > totalNodes || _limit == 0) { max = totalNodes; }
        // Create array big enough for every minipool
        address[] memory nodes = new address[](max.sub(_offset));
        uint256 total = 0;
        for (uint256 i = _offset; i < max; i++) {
            nodes[total] = addressSetStorage.getItem(nodeKey, i);
            total++;
        }
        // Dirty hack to cut unused elements off end of return value
        assembly {
            mstore(nodes, total)
        }
        return nodes;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b > a) return (false, 0);
        return (true, a - b);
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) return (true, 0);
        uint256 c = a * b;
        if (c / a != b) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a / b);
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a % b);
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a, "SafeMath: subtraction overflow");
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) return 0;
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: division by zero");
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: modulo by zero");
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        return a - b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a % b;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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 `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, 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 `sender` to `recipient` 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 sender, address recipient, uint256 amount) external returns (bool);

    /**
     * @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);
}

/**
  *       .
  *      / \
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \|        | |      | |    | ___ \         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
  *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
  * +---------------------------------------------------+
  * |  DECENTRALISED STAKING PROTOCOL FOR ETHEREUM 2.0  |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind ETH2 Proof of Stake protocol, designed to be community owned,
  *  decentralised, trustless and compatible with staking in Ethereum 2.0.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */

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 2.0  |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind ETH2 Proof of Stake protocol, designed to be community owned,
  *  decentralised, trustless and compatible with staking in Ethereum 2.0.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */

pragma solidity 0.7.6;

// 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(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 2.0  |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind ETH2 Proof of Stake protocol, designed to be community owned,
  *  decentralised, trustless and compatible with staking in Ethereum 2.0.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */

pragma solidity 0.7.6;

// 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 2.0  |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind ETH2 Proof of Stake protocol, designed to be community owned,
  *  decentralised, trustless and compatible with staking in Ethereum 2.0.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */

pragma solidity 0.7.6;

// 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 2.0  |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind ETH2 Proof of Stake protocol, designed to be community owned,
  *  decentralised, trustless and compatible with staking in Ethereum 2.0.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */

pragma solidity >0.5.0 <0.9.0;
pragma abicoder v2;

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

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 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 2.0  |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind ETH2 Proof of Stake protocol, designed to be community owned,
  *  decentralised, trustless and compatible with staking in Ethereum 2.0.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */

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);
}

/**
  *       .
  *      / \
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \|        | |      | |    | ___ \         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
  *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
  * +---------------------------------------------------+
  * |  DECENTRALISED STAKING PROTOCOL FOR ETHEREUM 2.0  |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind ETH2 Proof of Stake protocol, designed to be community owned,
  *  decentralised, trustless and compatible with staking in Ethereum 2.0.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */

pragma solidity >0.5.0 <0.9.0;

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

interface AddressSetStorageInterface {
    function getCount(bytes32 _key) external view returns (uint);
    function getItem(bytes32 _key, uint _index) external view returns (address);
    function getIndexOf(bytes32 _key, address _value) external view returns (int);
    function addItem(bytes32 _key, address _value) external;
    function removeItem(bytes32 _key, address _value) external;
}

/**
  *       .
  *      / \
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \|        | |      | |    | ___ \         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
  *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
  * +---------------------------------------------------+
  * |  DECENTRALISED STAKING PROTOCOL FOR ETHEREUM 2.0  |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind ETH2 Proof of Stake protocol, designed to be community owned,
  *  decentralised, trustless and compatible with staking in Ethereum 2.0.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */

pragma solidity 0.7.6;

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

interface RocketNodeDistributorFactoryInterface {
    function getProxyBytecode() external pure returns (bytes memory);
    function getProxyAddress(address _nodeAddress) external view returns(address);
    function createProxy(address _nodeAddress) external;
}

/**
  *       .
  *      / \
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \|        | |      | |    | ___ \         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
  *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
  * +---------------------------------------------------+
  * |  DECENTRALISED STAKING PROTOCOL FOR ETHEREUM 2.0  |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind ETH2 Proof of Stake protocol, designed to be community owned,
  *  decentralised, trustless and compatible with staking in Ethereum 2.0.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */

pragma solidity 0.7.6;

// 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 2.0  |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind ETH2 Proof of Stake protocol, designed to be community owned,
  *  decentralised, trustless and compatible with staking in Ethereum 2.0.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */

pragma solidity 0.7.6;

// 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 2.0  |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind ETH2 Proof of Stake protocol, designed to be community owned,
  *  decentralised, trustless and compatible with staking in Ethereum 2.0.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */

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 2.0  |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind ETH2 Proof of Stake protocol, designed to be community owned,
  *  decentralised, trustless and compatible with staking in Ethereum 2.0.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */

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 incrementNodeFinalisedMinipoolCount(address _nodeAddress) external;
    function setMinipoolPubkey(bytes calldata _pubkey) external;
    function getMinipoolDepositType(address _minipoolAddress) external view returns (MinipoolDeposit);
}

/**
  *       .
  *      / \
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \|        | |      | |    | ___ \         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
  *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
  * +---------------------------------------------------+
  * |  DECENTRALISED STAKING PROTOCOL FOR ETHEREUM 2.0  |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind ETH2 Proof of Stake protocol, designed to be community owned,
  *  decentralised, trustless and compatible with staking in Ethereum 2.0.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */

pragma solidity 0.7.6;

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

interface RocketNodeDistributorInterface {
    function getNodeShare() external view returns (uint256);
    function getUserShare() external view returns (uint256);
    function distribute() external;
}

/**
  *       .
  *      / \
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \|        | |      | |    | ___ \         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
  *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
  * +---------------------------------------------------+
  * |  DECENTRALISED STAKING PROTOCOL FOR ETHEREUM 2.0  |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind ETH2 Proof of Stake protocol, designed to be community owned,
  *  decentralised, trustless and compatible with staking in Ethereum 2.0.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */

pragma solidity 0.7.6;

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

interface RocketDAONodeTrustedSettingsRewardsInterface {
    function getNetworkEnabled(uint256 _network) external view returns (bool);
}

/**
  *       .
  *      / \
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \|        | |      | |    | ___ \         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
  *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
  * +---------------------------------------------------+
  * |  DECENTRALISED STAKING PROTOCOL FOR ETHEREUM 2.0  |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind ETH2 Proof of Stake protocol, designed to be community owned,
  *  decentralised, trustless and compatible with staking in Ethereum 2.0.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */

pragma solidity >0.5.0 <0.9.0;

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

interface RocketDAOProtocolSettingsRewardsInterface {
    function setSettingRewardsClaimer(string memory _contractName, uint256 _perc) external;
    function getRewardsClaimerPerc(string memory _contractName) external view returns (uint256);
    function getRewardsClaimerPercTimeUpdated(string memory _contractName) external view returns (uint256);
    function getRewardsClaimersPercTotal() external view returns (uint256);
    function getRewardsClaimIntervalTime() external view returns (uint256);
}

/**
  *       .
  *      / \
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \|        | |      | |    | ___ \         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
  *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
  * +---------------------------------------------------+
  * |  DECENTRALISED STAKING PROTOCOL FOR ETHEREUM 2.0  |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind ETH2 Proof of Stake protocol, designed to be community owned,
  *  decentralised, trustless and compatible with staking in Ethereum 2.0.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */

pragma solidity >0.5.0 <0.9.0;

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

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 stakeRPL(uint256 _amount) external;
    function stakeRPLFor(address _nodeAddress, uint256 _amount) external;
    function setStakeRPLForAllowed(address _caller, bool _allowed) external;
    function withdrawRPL(uint256 _amount) external;
    function slashRPL(address _nodeAddress, uint256 _ethSlashAmount) external;
}

/**
  *       .
  *      / \
  *     |.'.|
  *     |'.'|
  *   ,'|   |`.
  *  |,-'-|-'-.|
  *   __|_| |         _        _      _____           _
  *  | ___ \|        | |      | |    | ___ \         | |
  *  | |_/ /|__   ___| | _____| |_   | |_/ /__   ___ | |
  *  |    // _ \ / __| |/ / _ \ __|  |  __/ _ \ / _ \| |
  *  | |\ \ (_) | (__|   <  __/ |_   | | | (_) | (_) | |
  *  \_| \_\___/ \___|_|\_\___|\__|  \_|  \___/ \___/|_|
  * +---------------------------------------------------+
  * |  DECENTRALISED STAKING PROTOCOL FOR ETHEREUM 2.0  |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind ETH2 Proof of Stake protocol, designed to be community owned,
  *  decentralised, trustless and compatible with staking in Ethereum 2.0.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */

pragma solidity >0.5.0 <0.9.0;

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

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

interface RocketNodeDepositInterface {
    function getNodeDepositCredit(address _nodeOperator) external view returns (uint256);
    function increaseDepositCreditBalance(address _nodeOperator, 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 2.0  |
  * +---------------------------------------------------+
  *
  *  Rocket Pool is a first-of-its-kind ETH2 Proof of Stake protocol, designed to be community owned,
  *  decentralised, trustless and compatible with staking in Ethereum 2.0.
  *
  *  For more information about Rocket Pool, visit https://rocketpool.net
  *
  *  Authors: David Rugendyke, Jake Pospischil, Kane Wallmann, Darren Langley, Joe Clapis, Nick Doherty
  *
  */

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);
}

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

[{"inputs":[{"internalType":"contract RocketStorageInterface","name":"_rocketStorageAddress","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"node","type":"address"},{"indexed":false,"internalType":"uint256","name":"time","type":"uint256"}],"name":"NodeRegistered","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"node","type":"address"},{"indexed":false,"internalType":"uint256","name":"network","type":"uint256"}],"name":"NodeRewardNetworkChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"node","type":"address"},{"indexed":false,"internalType":"bool","name":"state","type":"bool"}],"name":"NodeSmoothingPoolStateChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"node","type":"address"},{"indexed":false,"internalType":"uint256","name":"time","type":"uint256"}],"name":"NodeTimezoneLocationSet","type":"event"},{"inputs":[{"internalType":"address","name":"_nodeAddress","type":"address"}],"name":"getAverageNodeFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_nodeAddress","type":"address"}],"name":"getFeeDistributorInitialised","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_offset","type":"uint256"},{"internalType":"uint256","name":"_limit","type":"uint256"}],"name":"getNodeAddresses","outputs":[{"internalType":"address[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_index","type":"uint256"}],"name":"getNodeAt","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getNodeCount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_offset","type":"uint256"},{"internalType":"uint256","name":"_limit","type":"uint256"}],"name":"getNodeCountPerTimezone","outputs":[{"components":[{"internalType":"string","name":"timezone","type":"string"},{"internalType":"uint256","name":"count","type":"uint256"}],"internalType":"struct RocketNodeManagerInterface.TimezoneCount[]","name":"","type":"tuple[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_nodeAddress","type":"address"}],"name":"getNodeDetails","outputs":[{"components":[{"internalType":"bool","name":"exists","type":"bool"},{"internalType":"uint256","name":"registrationTime","type":"uint256"},{"internalType":"string","name":"timezoneLocation","type":"string"},{"internalType":"bool","name":"feeDistributorInitialised","type":"bool"},{"internalType":"address","name":"feeDistributorAddress","type":"address"},{"internalType":"uint256","name":"rewardNetwork","type":"uint256"},{"internalType":"uint256","name":"rplStake","type":"uint256"},{"internalType":"uint256","name":"effectiveRPLStake","type":"uint256"},{"internalType":"uint256","name":"minimumRPLStake","type":"uint256"},{"internalType":"uint256","name":"maximumRPLStake","type":"uint256"},{"internalType":"uint256","name":"ethMatched","type":"uint256"},{"internalType":"uint256","name":"ethMatchedLimit","type":"uint256"},{"internalType":"uint256","name":"minipoolCount","type":"uint256"},{"internalType":"uint256","name":"balanceETH","type":"uint256"},{"internalType":"uint256","name":"balanceRETH","type":"uint256"},{"internalType":"uint256","name":"balanceRPL","type":"uint256"},{"internalType":"uint256","name":"balanceOldRPL","type":"uint256"},{"internalType":"uint256","name":"depositCreditBalance","type":"uint256"},{"internalType":"uint256","name":"distributorBalanceUserETH","type":"uint256"},{"internalType":"uint256","name":"distributorBalanceNodeETH","type":"uint256"},{"internalType":"address","name":"withdrawalAddress","type":"address"},{"internalType":"address","name":"pendingWithdrawalAddress","type":"address"},{"internalType":"bool","name":"smoothingPoolRegistrationState","type":"bool"},{"internalType":"uint256","name":"smoothingPoolRegistrationChanged","type":"uint256"},{"internalType":"address","name":"nodeAddress","type":"address"}],"internalType":"struct NodeDetails","name":"nodeDetails","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_nodeAddress","type":"address"}],"name":"getNodeExists","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_nodeAddress","type":"address"}],"name":"getNodePendingWithdrawalAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_nodeAddress","type":"address"}],"name":"getNodeRegistrationTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_nodeAddress","type":"address"}],"name":"getNodeTimezoneLocation","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_nodeAddress","type":"address"}],"name":"getNodeWithdrawalAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_nodeAddress","type":"address"}],"name":"getRewardNetwork","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_offset","type":"uint256"},{"internalType":"uint256","name":"_limit","type":"uint256"}],"name":"getSmoothingPoolRegisteredNodeCount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_nodeAddress","type":"address"}],"name":"getSmoothingPoolRegistrationChanged","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_nodeAddress","type":"address"}],"name":"getSmoothingPoolRegistrationState","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"initialiseFeeDistributor","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"_timezoneLocation","type":"string"}],"name":"registerNode","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_nodeAddress","type":"address"},{"internalType":"uint256","name":"_network","type":"uint256"}],"name":"setRewardNetwork","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_state","type":"bool"}],"name":"setSmoothingPoolRegistrationState","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"_timezoneLocation","type":"string"}],"name":"setTimezoneLocation","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"version","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"}]

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