Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

//SPDX-License-Identifier: MIT
pragma solidity 0.8.15;

// Openzeppelin helper
import {SafeERC20} from "openzeppelin/token/ERC20/utils/SafeERC20.sol";
import {IERC20Metadata} from "openzeppelin/token/ERC20/extensions/IERC20Metadata.sol";

// Definition of custom errors
error AmountLessThanStakedAmountOrZero();
error CallerNotGovernance();
error EtherNotAccepted();
error InsufficientFunds();
error NoPendingRewardsToClaim();
error NoStakeFound();
error RewardDistributionPeriodHasExpired();
error RewardPerBlockIsNotSet();
error SameRewardToken();
error ZeroAddress();
error ZeroInput();

/// @title NODE Staking
/// @author @0xhammadghazi
/// @notice Contract for staking NODE to earn rewards
contract NodeStaking {
    using SafeERC20 for IERC20Metadata;

    // Info of each user
    struct UserInfo {
        uint256 lastUpdateRewardToken; // Timestamp of last reward token update - used to reset user reward debt
        uint256 amount; // Amount of NODE tokens staked by the user
        uint256 rewardDebt; // Reward debt
    }

    // To determine transaction type
    enum TxType {
        STAKE,
        UNSTAKE,
        CLAIM,
        EMERGENCY
    }

    // Address of the NODE token
    IERC20Metadata public immutable nodeToken;

    // Address of the reward token
    IERC20Metadata public rewardToken;

    // Address of the governance
    address public governance;

    // Precision factor for multiple calculations
    uint256 public constant ONE = 1e9;

    // Accumulated reward per NODE token
    uint256 public accRewardPerNode;

    // Last update block for rewards
    uint256 public lastUpdateBlock;

    // Total NODE tokens staked
    uint256 public totalNodeStaked;

    // Tracks the total number of unique addresses that have staked in the contract
    uint256 public stakerCount;

    // Reward to distribute per block
    uint256 public currentRewardPerBlock;

    // Current end block for the current reward period
    uint256 public periodEndBlock;

    // Last time reward token was updated
    uint256 public lastUpdateRewardToken;

    // Info of each user that stakes NODE tokens
    mapping(address => UserInfo) public userInfo;

    event StakeOrUnstakeOrClaim(
        address indexed user,
        uint256 amount,
        uint256 pendingReward,
        TxType txType
    );
    event NewRewardPeriod(
        uint256 numberBlocksToDistributeRewards,
        uint256 newRewardPerBlock,
        uint256 rewardToDistribute,
        uint256 rewardExpirationBlock
    );
    event GovernanceChanged(
        address indexed oldGovernance,
        address indexed newGovernance
    );
    event RewardTokenChanged(
        address indexed oldRewardToken,
        address indexed newRewardToken
    );

    event PeriodEndBlockUpdate(
        uint256 numberBlocksToDistributeRewards,
        uint256 rewardExpirationBlock
    );

    /**
     * @notice Constructor
     * @param _governance governance address of NODE staking
     * @param _rewardToken address of the reward token
     * @param _nodeToken address of the NODE token
     */
    constructor(
        address _governance,
        address _rewardToken,
        address _nodeToken
    ) {
        if (
            _governance == address(0) ||
            _rewardToken == address(0) ||
            _nodeToken == address(0)
        ) revert ZeroAddress();

        governance = _governance;
        rewardToken = IERC20Metadata(_rewardToken);
        nodeToken = IERC20Metadata(_nodeToken);
        emit GovernanceChanged(address(0), _governance);
        emit RewardTokenChanged(address(0), _rewardToken);
    }

    /**
     * @dev Throws if ether is received
     */
    receive() external payable {
        revert EtherNotAccepted();
    }

    /**
     * @dev Throws if called by any account other than the governance
     */
    modifier onlyGovernance() {
        if (msg.sender != governance) revert CallerNotGovernance();
        _;
    }

    /**
     * @notice Updates the governance of this contract
     * @param _newGovernance address of the new governance of this contract
     * @dev Only callable by Governance
     */
    function setGovernance(address _newGovernance) external onlyGovernance {
        if (_newGovernance == address(0)) revert ZeroAddress();

        emit GovernanceChanged(governance, _newGovernance);
        governance = _newGovernance;
    }

    /**
     * @notice Updates the reward token.
     * @param _newRewardToken address of the new reward token
     * @dev Only callable by Governance. It also resets reward distribution accounting
     */
    function updateRewardToken(address _newRewardToken)
        external
        onlyGovernance
    {
        if (_newRewardToken == address(rewardToken)) revert SameRewardToken();
        if (_newRewardToken == address(0)) revert ZeroAddress();

        // Resetting reward distribution accounting
        accRewardPerNode = 0;
        lastUpdateBlock = _lastRewardBlock();

        // Setting reward token update time
        lastUpdateRewardToken = block.timestamp;

        emit RewardTokenChanged(address(rewardToken), _newRewardToken);

        // Updating reward token address
        rewardToken = IERC20Metadata(_newRewardToken);
    }

    /**
     * @notice Updates the reward per block
     * @param _reward total reward to distribute.
     * @param _rewardDurationInBlocks total number of blocks in which the '_reward' should be distributed
     * @dev Only callable by Governance.
     */
    function updateRewards(uint256 _reward, uint256 _rewardDurationInBlocks)
        external
        onlyGovernance
    {
        if (_rewardDurationInBlocks == 0) revert ZeroInput();

        // Update reward distribution accounting
        _updateRewardPerNodeAndLastBlock();

        // Adjust the current reward per block
        // If reward distribution duration is expired
        if (block.number >= periodEndBlock) {
            if (_reward == 0) revert ZeroInput();

            currentRewardPerBlock = _reward / _rewardDurationInBlocks;
        }
        // Otherwise, reward distribution duration isn't expired
        else {
            currentRewardPerBlock =
                (_reward +
                    ((periodEndBlock - block.number) * currentRewardPerBlock)) /
                _rewardDurationInBlocks;
        }

        lastUpdateBlock = block.number;

        // Setting rewards expiration block
        periodEndBlock = block.number + _rewardDurationInBlocks;

        emit NewRewardPeriod(
            _rewardDurationInBlocks,
            currentRewardPerBlock,
            _reward,
            periodEndBlock
        );
    }

    /**
     * @notice Updates the reward distribution duration end block
     * @param _expireDurationInBlocks number of blocks after which reward distribution should be halted
     * @dev Only callable by Governance
     */
    function updateRewardEndBlock(uint256 _expireDurationInBlocks)
        external
        onlyGovernance
    {
        // Update reward distribution accounting
        _updateRewardPerNodeAndLastBlock();
        lastUpdateBlock = block.number;

        // Setting rewards expiration block
        periodEndBlock = block.number + _expireDurationInBlocks;
        emit PeriodEndBlockUpdate(_expireDurationInBlocks, periodEndBlock);
    }

   

    /**
     * @notice Stake NODE tokens. Also triggers a claim.
     * @param _to staking reward receiver address
     * @param _amount amount of NODE tokens to stake
     */
    function stake(address _to,uint256 _amount) external {
        if (_amount == 0) revert ZeroInput();
        
        if (_to == address(0)) revert ZeroAddress();

        if (currentRewardPerBlock == 0) revert RewardPerBlockIsNotSet();

        if (block.number >= periodEndBlock)
            revert RewardDistributionPeriodHasExpired();

        if (rewardToken.balanceOf(address(this)) == 0)
            revert InsufficientFunds();

        _stakeOrUnstakeOrClaim( _to,_amount, TxType.STAKE);
    }

    /**
     * @notice Unstake NODE tokens. Also triggers a reward claim.
     * @param _amount amount of NODE tokens to unstake
     */
    function unstake(uint256 _amount) external {
        if ((_amount > userInfo[msg.sender].amount) || _amount == 0)
            revert AmountLessThanStakedAmountOrZero();

        _stakeOrUnstakeOrClaim(msg.sender, _amount, TxType.UNSTAKE);
    }

    /**
     * @notice Unstake all staked NODE tokens without caring about rewards, EMERGENCY ONLY
     */
    function emergencyUnstake() external {
        if (userInfo[msg.sender].amount > 0) {
            _stakeOrUnstakeOrClaim(
                msg.sender,
                userInfo[msg.sender].amount,
                TxType.EMERGENCY
            );
        } else revert NoStakeFound();
    }

    /**
     * @notice Claim pending rewards.
     */
    function claim() external {
        _stakeOrUnstakeOrClaim(
            msg.sender,
            userInfo[msg.sender].amount,
            TxType.CLAIM
        );
    }

    /**
     * @notice Calculate pending rewards for a user
     * @param _user address of the user
     * @return pending rewards of the user
     */
    function calculatePendingRewards(address _user)
        external
        view
        returns (uint256)
    {
        uint256 newAccRewardPerNode;

        if (totalNodeStaked != 0) {
            newAccRewardPerNode =
                accRewardPerNode +
                (((_lastRewardBlock() - lastUpdateBlock) *
                    (currentRewardPerBlock * ONE)) / totalNodeStaked);
            // If checking user pending rewards in the block in which reward token is updated
            if (newAccRewardPerNode == 0) return 0;
        } else return 0;

        uint256 rewardDebt = userInfo[_user].rewardDebt;

        // Reset debt if user is checking rewards after reward token has changed
        if (userInfo[_user].lastUpdateRewardToken < lastUpdateRewardToken)
            rewardDebt = 0;

        uint256 pendingRewards = ((userInfo[_user].amount *
            newAccRewardPerNode) / ONE) - rewardDebt;

        return pendingRewards;
    }

    /**
     * @notice Return last block where trading rewards were distributed
     */
    function lastRewardBlock() external view returns (uint256) {
        return _lastRewardBlock();
    }

    /**
     * @notice Stake/ Unstake NODE tokens and also distributes reward
     * @param _to staking reward receiver address
     * @param _amount amount of NODE tokens to stake or unstake. 0 if claim tx.
     * @param _txType type of the transaction
     */
    function _stakeOrUnstakeOrClaim(
        address _to,
        uint256 _amount,
        TxType _txType
    ) private {
        // Update reward distribution accounting
        _updateRewardPerNodeAndLastBlock();

        // Reset debt if reward token has changed
        _resetDebtIfNewRewardToken(_to);

        UserInfo storage user = userInfo[_to];

        uint256 pendingRewards;

        // Distribute rewards if not emergency unstake
        if (TxType.EMERGENCY != _txType) {
            // Distribute rewards if not new stake
            if (user.amount > 0) {
                // Calculate pending rewards
                pendingRewards = _calculatePendingRewards(_to);

                // If there are rewards to distribute
                if (pendingRewards > 0) {
                    if (pendingRewards > rewardToken.balanceOf(address(this)))
                        revert InsufficientFunds();

                    // Transferring rewards to the user
                    rewardToken.safeTransfer(_to, pendingRewards);
                }
                // If there are no pending rewards and tx is of claim then revert
                else if (TxType.CLAIM == _txType)
                    revert NoPendingRewardsToClaim();
            }
            // Claiming rewards without any stake
            else if (TxType.CLAIM == _txType) revert NoPendingRewardsToClaim();
        }

        if (TxType.STAKE == _txType) {
            // Transfer NODE tokens from the caller to this contract
            nodeToken.safeTransferFrom(msg.sender, address(this), _amount);

            // Increment the staker count if the user is staking for the first time (previously had no stake)
            if (user.amount == 0) stakerCount++;

            // Increase user NODE staked amount
            user.amount += _amount;

            // Increase total NODE staked amount
            totalNodeStaked += _amount;
        } else if (TxType.UNSTAKE == _txType || TxType.EMERGENCY == _txType) {
            // Decrease user NODE staked amount
            user.amount -= _amount;

            // Decrease total NODE staked amount
            totalNodeStaked -= _amount;

            // Transfer NODE tokens back to the sender
            nodeToken.safeTransfer(_to, _amount);

            // Decrease the staker count if the user has no staked amount remaining
            if (user.amount == 0) stakerCount--;
        }

        // Adjust user debt
        user.rewardDebt = (user.amount * accRewardPerNode) / ONE;

        emit StakeOrUnstakeOrClaim(_to, _amount, pendingRewards, _txType);
    }

    /**
     * @notice Resets user reward debt if reward token has changed
     * @param _to reward debt reset address
     */
    function _resetDebtIfNewRewardToken(address _to) private {
        // Reset debt if user last update reward token time is less than the time of last reward token update
        if (userInfo[_to].lastUpdateRewardToken < lastUpdateRewardToken) {
            userInfo[_to].rewardDebt = 0;
            userInfo[_to].lastUpdateRewardToken = lastUpdateRewardToken;
        }
    }

    /**
     * @notice Updates accumulated reward to distribute per NODE token. Also updates the last block in which rewards are distributed
     */
    function _updateRewardPerNodeAndLastBlock() private {
        if (totalNodeStaked == 0) {
            lastUpdateBlock = block.number;
            return;
        }

        accRewardPerNode +=
            ((_lastRewardBlock() - lastUpdateBlock) *
                (currentRewardPerBlock * ONE)) /
            totalNodeStaked;

        if (block.number != lastUpdateBlock)
            lastUpdateBlock = _lastRewardBlock();
    }

    /**
     * @notice Calculate pending rewards for a user
     * @param _user address of the user
     */
    function _calculatePendingRewards(address _user)
        private
        view
        returns (uint256)
    {
        return
            ((userInfo[_user].amount * accRewardPerNode) / ONE) -
            userInfo[_user].rewardDebt;
    }

    /**
     * @notice Return last block where rewards must be distributed
     */
    function _lastRewardBlock() private view returns (uint256) {
        return block.number < periodEndBlock ? block.number : periodEndBlock;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: MIT

pragma solidity ^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);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 0;
    }

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

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

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

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

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

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

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

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

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

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

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

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

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

                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

{
  "remappings": [
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "forge-std/=lib/forge-std/src/",
    "openzeppelin/=lib/openzeppelin-contracts/contracts/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 10000
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs"
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "london",
  "viaIR": false,
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_governance","type":"address"},{"internalType":"address","name":"_rewardToken","type":"address"},{"internalType":"address","name":"_nodeToken","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"AmountLessThanStakedAmountOrZero","type":"error"},{"inputs":[],"name":"CallerNotGovernance","type":"error"},{"inputs":[],"name":"EtherNotAccepted","type":"error"},{"inputs":[],"name":"InsufficientFunds","type":"error"},{"inputs":[],"name":"NoPendingRewardsToClaim","type":"error"},{"inputs":[],"name":"NoStakeFound","type":"error"},{"inputs":[],"name":"RewardDistributionPeriodHasExpired","type":"error"},{"inputs":[],"name":"RewardPerBlockIsNotSet","type":"error"},{"inputs":[],"name":"SameRewardToken","type":"error"},{"inputs":[],"name":"ZeroAddress","type":"error"},{"inputs":[],"name":"ZeroInput","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"oldGovernance","type":"address"},{"indexed":true,"internalType":"address","name":"newGovernance","type":"address"}],"name":"GovernanceChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"numberBlocksToDistributeRewards","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"newRewardPerBlock","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"rewardToDistribute","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"rewardExpirationBlock","type":"uint256"}],"name":"NewRewardPeriod","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"numberBlocksToDistributeRewards","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"rewardExpirationBlock","type":"uint256"}],"name":"PeriodEndBlockUpdate","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"oldRewardToken","type":"address"},{"indexed":true,"internalType":"address","name":"newRewardToken","type":"address"}],"name":"RewardTokenChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"pendingReward","type":"uint256"},{"indexed":false,"internalType":"enum NodeStaking.TxType","name":"txType","type":"uint8"}],"name":"StakeOrUnstakeOrClaim","type":"event"},{"inputs":[],"name":"ONE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"accRewardPerNode","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_user","type":"address"}],"name":"calculatePendingRewards","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"claim","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"currentRewardPerBlock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"emergencyUnstake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"governance","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lastRewardBlock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lastUpdateBlock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lastUpdateRewardToken","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"nodeToken","outputs":[{"internalType":"contract IERC20Metadata","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"periodEndBlock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"rewardToken","outputs":[{"internalType":"contract IERC20Metadata","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_newGovernance","type":"address"}],"name":"setGovernance","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"stake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"stakerCount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalNodeStaked","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"unstake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_expireDurationInBlocks","type":"uint256"}],"name":"updateRewardEndBlock","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newRewardToken","type":"address"}],"name":"updateRewardToken","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_reward","type":"uint256"},{"internalType":"uint256","name":"_rewardDurationInBlocks","type":"uint256"}],"name":"updateRewards","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"userInfo","outputs":[{"internalType":"uint256","name":"lastUpdateRewardToken","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"rewardDebt","type":"uint256"}],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]

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

000000000000000000000000187422fe07cd7e874bb362d850a4c1f6bc65a834000000000000000000000000ff284f2e8cce4cd2f4537d8a9369482b545908fb000000000000000000000000ff284f2e8cce4cd2f4537d8a9369482b545908fb

-----Decoded View---------------
Arg [0] : _governance (address): 0x187422fE07CD7e874bB362D850a4C1f6bc65A834
Arg [1] : _rewardToken (address): 0xFF284f2E8CcE4CD2f4537d8a9369482B545908FB
Arg [2] : _nodeToken (address): 0xFF284f2E8CcE4CD2f4537d8a9369482B545908FB

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000187422fe07cd7e874bb362d850a4c1f6bc65a834
Arg [1] : 000000000000000000000000ff284f2e8cce4cd2f4537d8a9369482b545908fb
Arg [2] : 000000000000000000000000ff284f2e8cce4cd2f4537d8a9369482b545908fb