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 ^0.8.0;

import './TokenSplitter.sol';
import './FeeSharingSetter.sol';
import './IWETH.sol';
import '@openzeppelin/contracts/access/AccessControl.sol';
import '@openzeppelin/contracts/access/Ownable.sol';
import '@openzeppelin/contracts/security/Pausable.sol';
import '@openzeppelin/contracts/security/ReentrancyGuard.sol';
import '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol';
import '@openzeppelin/contracts/utils/Address.sol';

contract FeeManagement is AccessControl, Pausable, ReentrancyGuard {
    using SafeERC20 for IERC20;
    using SafeERC20 for IWETH;

    bytes32 public constant OPERATOR_ROLE = keccak256('OPERATOR_ROLE');

    TokenSplitter public immutable tokenSplitter;
    FeeSharingSetter public immutable feeSetter;
    IWETH public immutable weth;

    constructor(
        TokenSplitter tokenSplitter_,
        FeeSharingSetter feeSetter_,
        IWETH weth_,
        address operator_,
        address admin_
    ) {
        tokenSplitter = tokenSplitter_;
        feeSetter = feeSetter_;
        weth = weth_;

        if (admin_ == address(0)) {
            admin_ = msg.sender;
        }
        _grantRole(DEFAULT_ADMIN_ROLE, admin_);
        _grantRole(OPERATOR_ROLE, admin_);

        if (operator_ != address(0)) {
            _grantRole(OPERATOR_ROLE, operator_);
        }
    }

    receive() external payable {}

    function pause() external onlyRole(DEFAULT_ADMIN_ROLE) {
        _pause();
    }

    function unpause() external onlyRole(DEFAULT_ADMIN_ROLE) {
        _unpause();
    }

    // withdraw tokens
    function withdraw(address to, IERC20[] calldata tokens)
        external
        nonReentrant
        whenNotPaused
        onlyRole(DEFAULT_ADMIN_ROLE)
    {
        require(to != address(0), 'Withdraw: address(0) cannot be recipient');
        for (uint256 i = 0; i < tokens.length; i++) {
            IERC20 currency = tokens[i];
            if (address(currency) == address(0)) {
                uint256 balance = address(this).balance;
                if (balance > 0) {
                    Address.sendValue(payable(to), balance);
                }
            } else {
                uint256 balance = currency.balanceOf(address(this));
                if (balance > 0) {
                    currency.safeTransfer(to, balance);
                }
            }
        }
    }

    function canRelease() external view returns (bool) {
        return
            block.number >
            feeSetter.rewardDurationInBlocks() + feeSetter.lastRewardDistributionBlock();
    }

    function releaseAndUpdateReward(IERC20[] memory tokens, address[] memory accounts)
        external
        nonReentrant
        whenNotPaused
        onlyRole(OPERATOR_ROLE)
    {
        _release(tokens);

        // release x2y2 to pools, skipped when the balance is less than 1 token (the release can be called by anyone)
        if (tokenSplitter.x2y2Token().balanceOf(address(tokenSplitter)) >= 1 ether) {
            for (uint256 i = 0; i < accounts.length; i++) {
                tokenSplitter.releaseTokens(accounts[i]);
            }
        }

        feeSetter.updateRewards();
    }

    function release(IERC20[] memory tokens)
        external
        nonReentrant
        whenNotPaused
        onlyRole(OPERATOR_ROLE)
    {
        _release(tokens);
    }

    function _release(IERC20[] memory tokens) internal {
        uint256 balance = address(this).balance;
        if (balance > 0) {
            weth.deposit{value: balance}();
        }
        balance = weth.balanceOf(address(this));
        if (balance > 0) {
            weth.safeTransfer(address(feeSetter), balance);
        }

        for (uint256 i = 0; i < tokens.length; i++) {
            IERC20 currency = tokens[i];
            balance = currency.balanceOf(address(this));
            if (balance > 0) {
                currency.safeTransfer(address(feeSetter), balance);
            }
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import {Ownable} from '@openzeppelin/contracts/access/Ownable.sol';
import {ReentrancyGuard} from '@openzeppelin/contracts/security/ReentrancyGuard.sol';
import {IERC20, SafeERC20} from '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol';

/**
 * @title TokenSplitter
 * @notice It splits X2Y2 to team/treasury/trading volume reward accounts based on shares.
 */
contract TokenSplitter is Ownable, ReentrancyGuard {
    using SafeERC20 for IERC20;

    struct AccountInfo {
        uint256 shares;
        uint256 tokensDistributedToAccount;
    }

    uint256 public immutable TOTAL_SHARES;

    IERC20 public immutable x2y2Token;

    // Total tokens distributed across all accounts
    uint256 public totalTokensDistributed;

    mapping(address => AccountInfo) public accountInfo;

    event NewSharesOwner(address indexed oldRecipient, address indexed newRecipient);
    event TokensTransferred(address indexed account, uint256 amount);

    /**
     * @notice Constructor
     * @param _accounts array of accounts addresses
     * @param _shares array of shares per account
     * @param _x2y2Token address of the X2Y2 token
     */
    constructor(
        address[] memory _accounts,
        uint256[] memory _shares,
        address _x2y2Token
    ) {
        require(_accounts.length == _shares.length, 'Splitter: Length differ');
        require(_accounts.length > 0, 'Splitter: Length must be > 0');

        uint256 currentShares;

        for (uint256 i = 0; i < _accounts.length; i++) {
            require(_shares[i] > 0, 'Splitter: Shares are 0');

            currentShares += _shares[i];
            accountInfo[_accounts[i]].shares = _shares[i];
        }

        TOTAL_SHARES = currentShares;
        x2y2Token = IERC20(_x2y2Token);
    }

    /**
     * @notice Release X2Y2 tokens to the account
     * @param account address of the account
     */
    function releaseTokens(address account) external nonReentrant {
        require(accountInfo[account].shares > 0, 'Splitter: Account has no share');

        // Calculate amount to transfer to the account
        uint256 totalTokensReceived = x2y2Token.balanceOf(address(this)) + totalTokensDistributed;
        uint256 pendingRewards = ((totalTokensReceived * accountInfo[account].shares) /
            TOTAL_SHARES) - accountInfo[account].tokensDistributedToAccount;

        // Revert if equal to 0
        require(pendingRewards != 0, 'Splitter: Nothing to transfer');

        accountInfo[account].tokensDistributedToAccount += pendingRewards;
        totalTokensDistributed += pendingRewards;

        // Transfer funds to account
        x2y2Token.safeTransfer(account, pendingRewards);

        emit TokensTransferred(account, pendingRewards);
    }

    /**
     * @notice Update share recipient
     * @param _newRecipient address of the new recipient
     * @param _currentRecipient address of the current recipient
     */
    function updateSharesOwner(address _newRecipient, address _currentRecipient)
        external
        onlyOwner
    {
        require(
            accountInfo[_currentRecipient].shares > 0,
            'Owner: Current recipient has no shares'
        );
        require(accountInfo[_newRecipient].shares == 0, 'Owner: New recipient has existing shares');

        // Copy shares to new recipient
        accountInfo[_newRecipient].shares = accountInfo[_currentRecipient].shares;
        accountInfo[_newRecipient].tokensDistributedToAccount = accountInfo[_currentRecipient]
            .tokensDistributedToAccount;

        // Reset existing shares
        accountInfo[_currentRecipient].shares = 0;
        accountInfo[_currentRecipient].tokensDistributedToAccount = 0;

        emit NewSharesOwner(_currentRecipient, _newRecipient);
    }

    /**
     * @notice Retrieve amount of X2Y2 tokens that can be transferred
     * @param account address of the account
     */
    function calculatePendingRewards(address account) external view returns (uint256) {
        if (accountInfo[account].shares == 0) {
            return 0;
        }

        uint256 totalTokensReceived = x2y2Token.balanceOf(address(this)) + totalTokensDistributed;
        uint256 pendingRewards = ((totalTokensReceived * accountInfo[account].shares) /
            TOTAL_SHARES) - accountInfo[account].tokensDistributedToAccount;

        return pendingRewards;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import {AccessControl} from '@openzeppelin/contracts/access/AccessControl.sol';
import {ReentrancyGuard} from '@openzeppelin/contracts/security/ReentrancyGuard.sol';
import {IERC20, SafeERC20} from '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol';
import {EnumerableSet} from '@openzeppelin/contracts/utils/structs/EnumerableSet.sol';

import {FeeSharingSystem} from './FeeSharingSystem.sol';
import {TokenDistributor} from './TokenDistributor.sol';

import {IRewardConvertor} from './IRewardConvertor.sol';
import {IMintableERC20} from './IMintableERC20.sol';

import {ITokenStaked} from './ITokenStaked.sol';

/**
 * @title FeeSharingSetter
 * @notice It receives exchange fees and owns the FeeSharingSystem contract.
 * It can plug to AMMs for converting all received currencies to WETH.
 */
contract FeeSharingSetter is ReentrancyGuard, AccessControl {
    using EnumerableSet for EnumerableSet.AddressSet;
    using SafeERC20 for IERC20;

    // Operator role
    bytes32 public constant OPERATOR_ROLE = keccak256('OPERATOR_ROLE');

    // Min duration for each fee-sharing period (in blocks)
    uint256 public immutable MIN_REWARD_DURATION_IN_BLOCKS;

    // Max duration for each fee-sharing period (in blocks)
    uint256 public immutable MAX_REWARD_DURATION_IN_BLOCKS;

    IERC20 public immutable x2y2Token;

    IERC20 public immutable rewardToken;

    FeeSharingSystem public feeSharingSystem;

    TokenDistributor public immutable tokenDistributor;

    // Reward convertor (tool to convert other currencies to rewardToken)
    IRewardConvertor public rewardConvertor;

    // Last reward block of distribution
    uint256 public lastRewardDistributionBlock;

    // Next reward duration in blocks
    uint256 public nextRewardDurationInBlocks;

    // Reward duration in blocks
    uint256 public rewardDurationInBlocks;

    // Set of addresses that are staking only the fee sharing
    EnumerableSet.AddressSet private _feeStakingAddresses;
    mapping(address => bool) public feeStakingAddressIStaked;

    event ConversionToRewardToken(
        address indexed token,
        uint256 amountConverted,
        uint256 amountReceived
    );
    event FeeStakingAddressesAdded(address[] feeStakingAddresses);
    event FeeStakingAddressesRemoved(address[] feeStakingAddresses);
    event NewRewardDurationInBlocks(uint256 rewardDurationInBlocks);
    event NewRewardConvertor(address rewardConvertor);

    /**
     * @notice Constructor
     * @param _feeSharingSystem address of the fee sharing system
     * @param _minRewardDurationInBlocks minimum reward duration in blocks
     * @param _maxRewardDurationInBlocks maximum reward duration in blocks
     * @param _rewardDurationInBlocks reward duration between two updates in blocks
     */
    constructor(
        address _feeSharingSystem,
        uint256 _minRewardDurationInBlocks,
        uint256 _maxRewardDurationInBlocks,
        uint256 _rewardDurationInBlocks
    ) {
        require(
            (_rewardDurationInBlocks <= _maxRewardDurationInBlocks) &&
                (_rewardDurationInBlocks >= _minRewardDurationInBlocks),
            'Owner: Reward duration in blocks outside of range'
        );

        MIN_REWARD_DURATION_IN_BLOCKS = _minRewardDurationInBlocks;
        MAX_REWARD_DURATION_IN_BLOCKS = _maxRewardDurationInBlocks;

        feeSharingSystem = FeeSharingSystem(_feeSharingSystem);

        rewardToken = feeSharingSystem.rewardToken();
        x2y2Token = feeSharingSystem.x2y2Token();
        tokenDistributor = feeSharingSystem.tokenDistributor();

        rewardDurationInBlocks = _rewardDurationInBlocks;
        nextRewardDurationInBlocks = _rewardDurationInBlocks;

        _setupRole(DEFAULT_ADMIN_ROLE, msg.sender);
    }

    /**
     * @notice Update the reward per block (in rewardToken)
     * @dev It automatically retrieves the number of pending WETH and adjusts
     * based on the balance of X2Y2 in fee-staking addresses that exist in the set.
     */
    function updateRewards() external onlyRole(OPERATOR_ROLE) {
        if (lastRewardDistributionBlock > 0) {
            require(
                block.number > (rewardDurationInBlocks + lastRewardDistributionBlock),
                'Reward: Too early to add'
            );
        }

        // Adjust for this period
        if (rewardDurationInBlocks != nextRewardDurationInBlocks) {
            rewardDurationInBlocks = nextRewardDurationInBlocks;
        }

        lastRewardDistributionBlock = block.number;

        // Calculate the reward to distribute as the balance held by this address
        uint256 reward = rewardToken.balanceOf(address(this));

        require(reward != 0, 'Reward: Nothing to distribute');

        // Check if there is any address eligible for fee-sharing only
        uint256 numberAddressesForFeeStaking = _feeStakingAddresses.length();

        // If there are eligible addresses for fee-sharing only, calculate their shares
        if (numberAddressesForFeeStaking > 0) {
            uint256[] memory x2y2Balances = new uint256[](numberAddressesForFeeStaking);
            (uint256 totalAmountStaked, ) = tokenDistributor.userInfo(address(feeSharingSystem));

            for (uint256 i = 0; i < numberAddressesForFeeStaking; i++) {
                address a = _feeStakingAddresses.at(i);
                uint256 balance = x2y2Token.balanceOf(a);
                if (feeStakingAddressIStaked[a]) {
                    balance = ITokenStaked(a).getTotalStaked();
                }
                totalAmountStaked += balance;
                x2y2Balances[i] = balance;
            }

            // Only apply the logic if the totalAmountStaked > 0 (to prevent division by 0)
            if (totalAmountStaked > 0) {
                uint256 adjustedReward = reward;

                for (uint256 i = 0; i < numberAddressesForFeeStaking; i++) {
                    uint256 amountToTransfer = (x2y2Balances[i] * reward) / totalAmountStaked;
                    if (amountToTransfer > 0) {
                        adjustedReward -= amountToTransfer;
                        rewardToken.safeTransfer(_feeStakingAddresses.at(i), amountToTransfer);
                    }
                }

                // Adjust reward accordingly
                reward = adjustedReward;
            }
        }

        // Transfer tokens to fee sharing system
        rewardToken.safeTransfer(address(feeSharingSystem), reward);

        // Update rewards
        feeSharingSystem.updateRewards(reward, rewardDurationInBlocks);
    }

    /**
     * @notice Convert currencies to reward token
     * @dev Function only usable only for whitelisted currencies (where no potential side effect)
     * @param token address of the token to sell
     * @param additionalData additional data (e.g., slippage)
     */
    function convertCurrencyToRewardToken(address token, bytes calldata additionalData)
        external
        nonReentrant
        onlyRole(OPERATOR_ROLE)
    {
        require(address(rewardConvertor) != address(0), 'Convert: RewardConvertor not set');
        require(token != address(rewardToken), 'Convert: Cannot be reward token');

        uint256 amountToConvert = IERC20(token).balanceOf(address(this));
        require(amountToConvert != 0, 'Convert: Amount to convert must be > 0');

        // Adjust allowance for this transaction only
        IERC20(token).safeIncreaseAllowance(address(rewardConvertor), amountToConvert);

        // Exchange token to reward token
        uint256 amountReceived = rewardConvertor.convert(
            token,
            address(rewardToken),
            amountToConvert,
            additionalData
        );

        emit ConversionToRewardToken(token, amountToConvert, amountReceived);
    }

    /**
     * @notice Add staking addresses
     * @param _stakingAddresses array of addresses eligible for fee-sharing only
     */
    function addFeeStakingAddresses(
        address[] calldata _stakingAddresses,
        bool[] calldata _addressIStaked
    ) external onlyRole(DEFAULT_ADMIN_ROLE) {
        require(_stakingAddresses.length == _addressIStaked.length, 'Owner: param length error');
        for (uint256 i = 0; i < _stakingAddresses.length; i++) {
            require(
                !_feeStakingAddresses.contains(_stakingAddresses[i]),
                'Owner: Address already registered'
            );
            _feeStakingAddresses.add(_stakingAddresses[i]);
            if (_addressIStaked[i]) {
                feeStakingAddressIStaked[_stakingAddresses[i]] = true;
            }
        }

        emit FeeStakingAddressesAdded(_stakingAddresses);
    }

    /**
     * @notice Remove staking addresses
     * @param _stakingAddresses array of addresses eligible for fee-sharing only
     */
    function removeFeeStakingAddresses(address[] calldata _stakingAddresses)
        external
        onlyRole(DEFAULT_ADMIN_ROLE)
    {
        for (uint256 i = 0; i < _stakingAddresses.length; i++) {
            require(
                _feeStakingAddresses.contains(_stakingAddresses[i]),
                'Owner: Address not registered'
            );
            _feeStakingAddresses.remove(_stakingAddresses[i]);
            if (feeStakingAddressIStaked[_stakingAddresses[i]]) {
                delete feeStakingAddressIStaked[_stakingAddresses[i]];
            }
        }

        emit FeeStakingAddressesRemoved(_stakingAddresses);
    }

    /**
     * @notice Set new reward duration in blocks for next update
     * @param _newRewardDurationInBlocks number of blocks for new reward period
     */
    function setNewRewardDurationInBlocks(uint256 _newRewardDurationInBlocks)
        external
        onlyRole(DEFAULT_ADMIN_ROLE)
    {
        require(
            (_newRewardDurationInBlocks <= MAX_REWARD_DURATION_IN_BLOCKS) &&
                (_newRewardDurationInBlocks >= MIN_REWARD_DURATION_IN_BLOCKS),
            'Owner: New reward duration in blocks outside of range'
        );

        nextRewardDurationInBlocks = _newRewardDurationInBlocks;

        emit NewRewardDurationInBlocks(_newRewardDurationInBlocks);
    }

    /**
     * @notice Set reward convertor contract
     * @param _rewardConvertor address of the reward convertor (set to null to deactivate)
     */
    function setRewardConvertor(address _rewardConvertor) external onlyRole(DEFAULT_ADMIN_ROLE) {
        rewardConvertor = IRewardConvertor(_rewardConvertor);

        emit NewRewardConvertor(_rewardConvertor);
    }

    /**
     * @notice See addresses eligible for fee-staking
     */
    function viewFeeStakingAddresses() external view returns (address[] memory) {
        uint256 length = _feeStakingAddresses.length();

        address[] memory feeStakingAddresses = new address[](length);

        for (uint256 i = 0; i < length; i++) {
            feeStakingAddresses[i] = _feeStakingAddresses.at(i);
        }

        return (feeStakingAddresses);
    }
}

// SPDX-License-Identifier: Unlicensed

pragma solidity ^0.8.0;
pragma abicoder v2;

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

interface IWETH is IERC20 {
    function deposit() external payable;

    function withdraw(uint256 wad) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/AccessControl.sol)

pragma solidity ^0.8.0;

import "./IAccessControl.sol";
import "../utils/Context.sol";
import "../utils/Strings.sol";
import "../utils/introspection/ERC165.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it.
 */
abstract contract AccessControl is Context, IAccessControl, ERC165 {
    struct RoleData {
        mapping(address => bool) members;
        bytes32 adminRole;
    }

    mapping(bytes32 => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with a standardized message including the required role.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     *
     * _Available since v4.1._
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role, _msgSender());
        _;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view override returns (bool) {
        return _roles[role].members[account];
    }

    /**
     * @dev Revert with a standard message if `account` is missing `role`.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     */
    function _checkRole(bytes32 role, address account) internal view {
        if (!hasRole(role, account)) {
            revert(
                string(
                    abi.encodePacked(
                        "AccessControl: account ",
                        Strings.toHexString(uint160(account), 20),
                        " is missing role ",
                        Strings.toHexString(uint256(role), 32)
                    )
                )
            );
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view override returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) public virtual override {
        require(account == _msgSender(), "AccessControl: can only renounce roles for self");

        _revokeRole(role, account);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event. Note that unlike {grantRole}, this function doesn't perform any
     * checks on the calling account.
     *
     * [WARNING]
     * ====
     * This function should only be called from the constructor when setting
     * up the initial roles for the system.
     *
     * Using this function in any other way is effectively circumventing the admin
     * system imposed by {AccessControl}.
     * ====
     *
     * NOTE: This function is deprecated in favor of {_grantRole}.
     */
    function _setupRole(bytes32 role, address account) internal virtual {
        _grantRole(role, account);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = getRoleAdmin(role);
        _roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * Internal function without access restriction.
     */
    function _grantRole(bytes32 role, address account) internal virtual {
        if (!hasRole(role, account)) {
            _roles[role].members[account] = true;
            emit RoleGranted(role, account, _msgSender());
        }
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * Internal function without access restriction.
     */
    function _revokeRole(bytes32 role, address account) internal virtual {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

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

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

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

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/Pausable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    constructor() {
        _paused = false;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        require(!paused(), "Pausable: paused");
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        require(paused(), "Pausable: not paused");
        _;
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)

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
// OpenZeppelin Contracts v4.4.1 (utils/Address.sol)

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);
            }
        }
    }
}

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

pragma solidity ^0.8.0;

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/IERC20.sol)

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
// OpenZeppelin Contracts v4.4.1 (utils/structs/EnumerableSet.sol)

pragma solidity ^0.8.0;

/**
 * @dev Library for managing
 * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
 * types.
 *
 * Sets have the following properties:
 *
 * - Elements are added, removed, and checked for existence in constant time
 * (O(1)).
 * - Elements are enumerated in O(n). No guarantees are made on the ordering.
 *
 * ```
 * contract Example {
 *     // Add the library methods
 *     using EnumerableSet for EnumerableSet.AddressSet;
 *
 *     // Declare a set state variable
 *     EnumerableSet.AddressSet private mySet;
 * }
 * ```
 *
 * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
 * and `uint256` (`UintSet`) are supported.
 */
library EnumerableSet {
    // To implement this library for multiple types with as little code
    // repetition as possible, we write it in terms of a generic Set type with
    // bytes32 values.
    // The Set implementation uses private functions, and user-facing
    // implementations (such as AddressSet) are just wrappers around the
    // underlying Set.
    // This means that we can only create new EnumerableSets for types that fit
    // in bytes32.

    struct Set {
        // Storage of set values
        bytes32[] _values;
        // Position of the value in the `values` array, plus 1 because index 0
        // means a value is not in the set.
        mapping(bytes32 => uint256) _indexes;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function _add(Set storage set, bytes32 value) private returns (bool) {
        if (!_contains(set, value)) {
            set._values.push(value);
            // The value is stored at length-1, but we add 1 to all indexes
            // and use 0 as a sentinel value
            set._indexes[value] = set._values.length;
            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function _remove(Set storage set, bytes32 value) private returns (bool) {
        // We read and store the value's index to prevent multiple reads from the same storage slot
        uint256 valueIndex = set._indexes[value];

        if (valueIndex != 0) {
            // Equivalent to contains(set, value)
            // To delete an element from the _values array in O(1), we swap the element to delete with the last one in
            // the array, and then remove the last element (sometimes called as 'swap and pop').
            // This modifies the order of the array, as noted in {at}.

            uint256 toDeleteIndex = valueIndex - 1;
            uint256 lastIndex = set._values.length - 1;

            if (lastIndex != toDeleteIndex) {
                bytes32 lastvalue = set._values[lastIndex];

                // Move the last value to the index where the value to delete is
                set._values[toDeleteIndex] = lastvalue;
                // Update the index for the moved value
                set._indexes[lastvalue] = valueIndex; // Replace lastvalue's index to valueIndex
            }

            // Delete the slot where the moved value was stored
            set._values.pop();

            // Delete the index for the deleted slot
            delete set._indexes[value];

            return true;
        } else {
            return false;
        }
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function _contains(Set storage set, bytes32 value) private view returns (bool) {
        return set._indexes[value] != 0;
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function _length(Set storage set) private view returns (uint256) {
        return set._values.length;
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function _at(Set storage set, uint256 index) private view returns (bytes32) {
        return set._values[index];
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function _values(Set storage set) private view returns (bytes32[] memory) {
        return set._values;
    }

    // Bytes32Set

    struct Bytes32Set {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _add(set._inner, value);
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
        return _remove(set._inner, value);
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
        return _contains(set._inner, value);
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(Bytes32Set storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
        return _at(set._inner, index);
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(Bytes32Set storage set) internal view returns (bytes32[] memory) {
        return _values(set._inner);
    }

    // AddressSet

    struct AddressSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(AddressSet storage set, address value) internal returns (bool) {
        return _add(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(AddressSet storage set, address value) internal returns (bool) {
        return _remove(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(AddressSet storage set, address value) internal view returns (bool) {
        return _contains(set._inner, bytes32(uint256(uint160(value))));
    }

    /**
     * @dev Returns the number of values in the set. O(1).
     */
    function length(AddressSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(AddressSet storage set, uint256 index) internal view returns (address) {
        return address(uint160(uint256(_at(set._inner, index))));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(AddressSet storage set) internal view returns (address[] memory) {
        bytes32[] memory store = _values(set._inner);
        address[] memory result;

        assembly {
            result := store
        }

        return result;
    }

    // UintSet

    struct UintSet {
        Set _inner;
    }

    /**
     * @dev Add a value to a set. O(1).
     *
     * Returns true if the value was added to the set, that is if it was not
     * already present.
     */
    function add(UintSet storage set, uint256 value) internal returns (bool) {
        return _add(set._inner, bytes32(value));
    }

    /**
     * @dev Removes a value from a set. O(1).
     *
     * Returns true if the value was removed from the set, that is if it was
     * present.
     */
    function remove(UintSet storage set, uint256 value) internal returns (bool) {
        return _remove(set._inner, bytes32(value));
    }

    /**
     * @dev Returns true if the value is in the set. O(1).
     */
    function contains(UintSet storage set, uint256 value) internal view returns (bool) {
        return _contains(set._inner, bytes32(value));
    }

    /**
     * @dev Returns the number of values on the set. O(1).
     */
    function length(UintSet storage set) internal view returns (uint256) {
        return _length(set._inner);
    }

    /**
     * @dev Returns the value stored at position `index` in the set. O(1).
     *
     * Note that there are no guarantees on the ordering of values inside the
     * array, and it may change when more values are added or removed.
     *
     * Requirements:
     *
     * - `index` must be strictly less than {length}.
     */
    function at(UintSet storage set, uint256 index) internal view returns (uint256) {
        return uint256(_at(set._inner, index));
    }

    /**
     * @dev Return the entire set in an array
     *
     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
     * this function has an unbounded cost, and using it as part of a state-changing function may render the function
     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
     */
    function values(UintSet storage set) internal view returns (uint256[] memory) {
        bytes32[] memory store = _values(set._inner);
        uint256[] memory result;

        assembly {
            result := store
        }

        return result;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import {AccessControl} from '@openzeppelin/contracts/access/AccessControl.sol';
import {IERC20, SafeERC20} from '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol';
import {ReentrancyGuard} from '@openzeppelin/contracts/security/ReentrancyGuard.sol';

import {TokenDistributor} from './TokenDistributor.sol';
import {IStakeFor} from './IStakeFor.sol';

/**
 * @title FeeSharingSystem
 * @notice It handles the distribution of fees using
 * WETH along with the auto-compounding of X2Y2.
 */
contract FeeSharingSystem is ReentrancyGuard, AccessControl, IStakeFor {
    using SafeERC20 for IERC20;

    // for `depositFor` call
    bytes32 public constant DEPOSIT_ROLE = keccak256('DEPOSIT_ROLE');

    // for `updateRewards()`
    bytes32 public constant REWARD_UPDATE_ROLE = keccak256('REWARD_UPDATE_ROLE');

    struct UserInfo {
        uint256 shares; // shares of token staked
        uint256 userRewardPerTokenPaid; // user reward per token paid
        uint256 rewards; // pending rewards
    }

    // Precision factor for calculating rewards and exchange rate
    uint256 public constant PRECISION_FACTOR = 10**18;

    IERC20 public immutable x2y2Token;

    IERC20 public immutable rewardToken;

    TokenDistributor public immutable tokenDistributor;

    // Reward rate (block)
    uint256 public currentRewardPerBlock;

    // Last reward adjustment block number
    uint256 public lastRewardAdjustment;

    // Last update block for rewards
    uint256 public lastUpdateBlock;

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

    // Reward per token stored
    uint256 public rewardPerTokenStored;

    // Total existing shares
    uint256 public totalShares;

    mapping(address => UserInfo) public userInfo;

    event Deposit(address indexed user, uint256 amount, uint256 harvestedAmount);
    event Harvest(address indexed user, uint256 harvestedAmount);
    event NewRewardPeriod(uint256 numberBlocks, uint256 rewardPerBlock, uint256 reward);
    event Withdraw(address indexed user, uint256 amount, uint256 harvestedAmount);

    /**
     * @notice Constructor
     * @param _x2y2Token address of the token staked
     * @param _rewardToken address of the reward token
     * @param _tokenDistributor address of the token distributor contract
     */
    constructor(
        address _x2y2Token,
        address _rewardToken,
        address _tokenDistributor
    ) {
        rewardToken = IERC20(_rewardToken);
        x2y2Token = IERC20(_x2y2Token);
        tokenDistributor = TokenDistributor(_tokenDistributor);
        _grantRole(DEFAULT_ADMIN_ROLE, msg.sender);
    }

    /**
     * @notice deposit on behalf of `user`, must be called on fresh deposit only
     * @param user deposit user
     * @param amount amount to deposit
     */
    function depositFor(address user, uint256 amount)
        external
        override
        nonReentrant
        onlyRole(DEPOSIT_ROLE)
        returns (bool)
    {
        require(amount >= PRECISION_FACTOR, 'Deposit: Amount must be >= 1 X2Y2');

        // Auto compounds for everyone
        tokenDistributor.harvestAndCompound();

        // Update reward for user
        _updateReward(user);

        // Retrieve total amount staked by this contract
        (uint256 totalAmountStaked, ) = tokenDistributor.userInfo(address(this));

        // transfer stakingToken from **sender**
        x2y2Token.safeTransferFrom(msg.sender, address(this), amount);

        uint256 currentShares;

        // Calculate the number of shares to issue for the user
        if (totalShares != 0) {
            currentShares = (amount * totalShares) / totalAmountStaked;
            // This is a sanity check to prevent deposit for 0 shares
            require(currentShares != 0, 'Deposit: Fail');
        } else {
            currentShares = amount;
        }

        // Adjust internal shares
        userInfo[user].shares += currentShares;
        totalShares += currentShares;

        // Verify X2Y2 token allowance and adjust if necessary
        _checkAndAdjustX2Y2TokenAllowanceIfRequired(amount, address(tokenDistributor));

        // Deposit user amount in the token distributor contract
        tokenDistributor.deposit(amount);

        emit Deposit(user, amount, 0);

        return true;
    }

    /**
     * @notice Deposit staked tokens (and collect reward tokens if requested)
     * @param amount amount to deposit (in X2Y2)
     * @param claimRewardToken whether to claim reward tokens
     * @dev There is a limit of 1 X2Y2 per deposit to prevent potential manipulation of current shares
     */
    function deposit(uint256 amount, bool claimRewardToken) external nonReentrant {
        require(amount >= PRECISION_FACTOR, 'Deposit: Amount must be >= 1 X2Y2');

        // Auto compounds for everyone
        tokenDistributor.harvestAndCompound();

        // Update reward for user
        _updateReward(msg.sender);

        // Retrieve total amount staked by this contract
        (uint256 totalAmountStaked, ) = tokenDistributor.userInfo(address(this));

        // Transfer X2Y2 tokens to this address
        x2y2Token.safeTransferFrom(msg.sender, address(this), amount);

        uint256 currentShares;

        // Calculate the number of shares to issue for the user
        if (totalShares != 0) {
            currentShares = (amount * totalShares) / totalAmountStaked;
            // This is a sanity check to prevent deposit for 0 shares
            require(currentShares != 0, 'Deposit: Fail');
        } else {
            currentShares = amount;
        }

        // Adjust internal shares
        userInfo[msg.sender].shares += currentShares;
        totalShares += currentShares;

        uint256 pendingRewards;

        if (claimRewardToken) {
            // Fetch pending rewards
            pendingRewards = userInfo[msg.sender].rewards;

            if (pendingRewards > 0) {
                userInfo[msg.sender].rewards = 0;
                rewardToken.safeTransfer(msg.sender, pendingRewards);
            }
        }

        // Verify X2Y2 token allowance and adjust if necessary
        _checkAndAdjustX2Y2TokenAllowanceIfRequired(amount, address(tokenDistributor));

        // Deposit user amount in the token distributor contract
        tokenDistributor.deposit(amount);

        emit Deposit(msg.sender, amount, pendingRewards);
    }

    /**
     * @notice Harvest reward tokens that are pending
     */
    function harvest() external nonReentrant {
        // Auto compounds for everyone
        tokenDistributor.harvestAndCompound();

        // Update reward for user
        _updateReward(msg.sender);

        // Retrieve pending rewards
        uint256 pendingRewards = userInfo[msg.sender].rewards;

        // If pending rewards are null, revert
        require(pendingRewards > 0, 'Harvest: Pending rewards must be > 0');

        // Adjust user rewards and transfer
        userInfo[msg.sender].rewards = 0;

        // Transfer reward token to sender
        rewardToken.safeTransfer(msg.sender, pendingRewards);

        emit Harvest(msg.sender, pendingRewards);
    }

    /**
     * @notice Withdraw staked tokens (and collect reward tokens if requested)
     * @param shares shares to withdraw
     * @param claimRewardToken whether to claim reward tokens
     */
    function withdraw(uint256 shares, bool claimRewardToken) external nonReentrant {
        require(
            (shares > 0) && (shares <= userInfo[msg.sender].shares),
            'Withdraw: Shares equal to 0 or larger than user shares'
        );

        _withdraw(shares, claimRewardToken);
    }

    /**
     * @notice Withdraw all staked tokens (and collect reward tokens if requested)
     * @param claimRewardToken whether to claim reward tokens
     */
    function withdrawAll(bool claimRewardToken) external nonReentrant {
        _withdraw(userInfo[msg.sender].shares, claimRewardToken);
    }

    /**
     * @notice Update the reward per block (in rewardToken)
     * @dev Only callable by owner. Owner is meant to be another smart contract.
     */
    function updateRewards(uint256 reward, uint256 rewardDurationInBlocks)
        external
        onlyRole(REWARD_UPDATE_ROLE)
    {
        // Adjust the current reward per block
        if (block.number >= periodEndBlock) {
            currentRewardPerBlock = reward / rewardDurationInBlocks;
        } else {
            currentRewardPerBlock =
                (reward + ((periodEndBlock - block.number) * currentRewardPerBlock)) /
                rewardDurationInBlocks;
        }

        lastUpdateBlock = block.number;
        periodEndBlock = block.number + rewardDurationInBlocks;

        emit NewRewardPeriod(rewardDurationInBlocks, currentRewardPerBlock, reward);
    }

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

    /**
     * @notice Calculate value of X2Y2 for a user given a number of shares owned
     * @param user address of the user
     */
    function calculateSharesValueInX2Y2(address user) external view returns (uint256) {
        // Retrieve amount staked
        (uint256 totalAmountStaked, ) = tokenDistributor.userInfo(address(this));

        // Adjust for pending rewards
        totalAmountStaked += tokenDistributor.calculatePendingRewards(address(this));

        // Return user pro-rata of total shares
        return
            userInfo[user].shares == 0
                ? 0
                : (totalAmountStaked * userInfo[user].shares) / totalShares;
    }

    /**
     * @notice Calculate price of one share (in X2Y2 token)
     * Share price is expressed times 1e18
     */
    function calculateSharePriceInX2Y2() external view returns (uint256) {
        (uint256 totalAmountStaked, ) = tokenDistributor.userInfo(address(this));

        // Adjust for pending rewards
        totalAmountStaked += tokenDistributor.calculatePendingRewards(address(this));

        return
            totalShares == 0
                ? PRECISION_FACTOR
                : (totalAmountStaked * PRECISION_FACTOR) / (totalShares);
    }

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

    /**
     * @notice Calculate pending rewards for a user
     * @param user address of the user
     */
    function _calculatePendingRewards(address user) internal view returns (uint256) {
        return
            ((userInfo[user].shares *
                (_rewardPerToken() - (userInfo[user].userRewardPerTokenPaid))) / PRECISION_FACTOR) +
            userInfo[user].rewards;
    }

    /**
     * @notice Check current allowance and adjust if necessary
     * @param _amount amount to transfer
     * @param _to token to transfer
     */
    function _checkAndAdjustX2Y2TokenAllowanceIfRequired(uint256 _amount, address _to) internal {
        if (x2y2Token.allowance(address(this), _to) < _amount) {
            x2y2Token.approve(_to, type(uint256).max);
        }
    }

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

    /**
     * @notice Return reward per token
     */
    function _rewardPerToken() internal view returns (uint256) {
        if (totalShares == 0) {
            return rewardPerTokenStored;
        }

        return
            rewardPerTokenStored +
            ((_lastRewardBlock() - lastUpdateBlock) * (currentRewardPerBlock * PRECISION_FACTOR)) /
            totalShares;
    }

    /**
     * @notice Update reward for a user account
     * @param _user address of the user
     */
    function _updateReward(address _user) internal {
        if (block.number != lastUpdateBlock) {
            rewardPerTokenStored = _rewardPerToken();
            lastUpdateBlock = _lastRewardBlock();
        }

        userInfo[_user].rewards = _calculatePendingRewards(_user);
        userInfo[_user].userRewardPerTokenPaid = rewardPerTokenStored;
    }

    /**
     * @notice Withdraw staked tokens (and collect reward tokens if requested)
     * @param shares shares to withdraw
     * @param claimRewardToken whether to claim reward tokens
     */
    function _withdraw(uint256 shares, bool claimRewardToken) internal {
        // Auto compounds for everyone
        tokenDistributor.harvestAndCompound();

        // Update reward for user
        _updateReward(msg.sender);

        // Retrieve total amount staked and calculated current amount (in X2Y2)
        (uint256 totalAmountStaked, ) = tokenDistributor.userInfo(address(this));
        uint256 currentAmount = (totalAmountStaked * shares) / totalShares;

        userInfo[msg.sender].shares -= shares;
        totalShares -= shares;

        // Withdraw amount equivalent in shares
        tokenDistributor.withdraw(currentAmount);

        uint256 pendingRewards;

        if (claimRewardToken) {
            // Fetch pending rewards
            pendingRewards = userInfo[msg.sender].rewards;

            if (pendingRewards > 0) {
                userInfo[msg.sender].rewards = 0;
                rewardToken.safeTransfer(msg.sender, pendingRewards);
            }
        }

        // Transfer X2Y2 tokens to sender
        x2y2Token.safeTransfer(msg.sender, currentAmount);

        emit Withdraw(msg.sender, currentAmount, pendingRewards);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import {ReentrancyGuard} from '@openzeppelin/contracts/security/ReentrancyGuard.sol';
import {IERC20, SafeERC20} from '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol';

import {IMintableERC20} from './IMintableERC20.sol';

/**
 * @title TokenDistributor
 * @notice It handles the distribution of X2Y2 token.
 * It auto-adjusts block rewards over a set number of periods.
 */
contract TokenDistributor is ReentrancyGuard {
    using SafeERC20 for IERC20;
    using SafeERC20 for IMintableERC20;

    struct StakingPeriod {
        uint256 rewardPerBlockForStaking;
        uint256 rewardPerBlockForOthers;
        uint256 periodLengthInBlock;
    }

    struct UserInfo {
        uint256 amount; // Amount of staked tokens provided by user
        uint256 rewardDebt; // Reward debt
    }

    // Precision factor for calculating rewards
    uint256 public constant PRECISION_FACTOR = 10**12;

    IMintableERC20 public immutable x2y2Token;

    address public immutable tokenSplitter;

    // Number of reward periods
    uint256 public immutable NUMBER_PERIODS;

    // Block number when rewards start
    uint256 public immutable START_BLOCK;

    // Accumulated tokens per share
    uint256 public accTokenPerShare;

    // Current phase for rewards
    uint256 public currentPhase;

    // Block number when rewards end
    uint256 public endBlock;

    // Block number of the last update
    uint256 public lastRewardBlock;

    // Tokens distributed per block for other purposes (team + treasury + trading rewards)
    uint256 public rewardPerBlockForOthers;

    // Tokens distributed per block for staking
    uint256 public rewardPerBlockForStaking;

    // Total amount staked
    uint256 public totalAmountStaked;

    mapping(uint256 => StakingPeriod) public stakingPeriod;

    mapping(address => UserInfo) public userInfo;

    event Compound(address indexed user, uint256 harvestedAmount);
    event Deposit(address indexed user, uint256 amount, uint256 harvestedAmount);
    event NewRewardsPerBlock(
        uint256 indexed currentPhase,
        uint256 startBlock,
        uint256 rewardPerBlockForStaking,
        uint256 rewardPerBlockForOthers
    );
    event Withdraw(address indexed user, uint256 amount, uint256 harvestedAmount);

    /**
     * @notice Constructor
     * @param _x2y2Token token address
     * @param _tokenSplitter token splitter contract address (for team and trading rewards)
     * @param _startBlock start block for reward program
     * @param _rewardsPerBlockForStaking array of rewards per block for staking
     * @param _rewardsPerBlockForOthers array of rewards per block for other purposes (team + treasury + trading rewards)
     * @param _periodLengthesInBlocks array of period lengthes
     * @param _numberPeriods number of periods with different rewards/lengthes (e.g., if 3 changes --> 4 periods)
     */
    constructor(
        address _x2y2Token,
        address _tokenSplitter,
        uint256 _startBlock,
        uint256[] memory _rewardsPerBlockForStaking,
        uint256[] memory _rewardsPerBlockForOthers,
        uint256[] memory _periodLengthesInBlocks,
        uint256 _numberPeriods
    ) {
        require(
            (_periodLengthesInBlocks.length == _numberPeriods) &&
                (_rewardsPerBlockForStaking.length == _numberPeriods) &&
                (_rewardsPerBlockForStaking.length == _numberPeriods),
            'Distributor: Lengthes must match numberPeriods'
        );

        // 1. Operational checks for supply
        uint256 nonCirculatingSupply = IMintableERC20(_x2y2Token).SUPPLY_CAP() -
            IMintableERC20(_x2y2Token).totalSupply();

        uint256 amountTokensToBeMinted;

        for (uint256 i = 0; i < _numberPeriods; i++) {
            amountTokensToBeMinted +=
                (_rewardsPerBlockForStaking[i] * _periodLengthesInBlocks[i]) +
                (_rewardsPerBlockForOthers[i] * _periodLengthesInBlocks[i]);

            stakingPeriod[i] = StakingPeriod({
                rewardPerBlockForStaking: _rewardsPerBlockForStaking[i],
                rewardPerBlockForOthers: _rewardsPerBlockForOthers[i],
                periodLengthInBlock: _periodLengthesInBlocks[i]
            });
        }

        require(
            amountTokensToBeMinted == nonCirculatingSupply,
            'Distributor: Wrong reward parameters'
        );

        // 2. Store values
        x2y2Token = IMintableERC20(_x2y2Token);
        tokenSplitter = _tokenSplitter;
        rewardPerBlockForStaking = _rewardsPerBlockForStaking[0];
        rewardPerBlockForOthers = _rewardsPerBlockForOthers[0];

        START_BLOCK = _startBlock;
        endBlock = _startBlock + _periodLengthesInBlocks[0];

        NUMBER_PERIODS = _numberPeriods;

        // Set the lastRewardBlock as the startBlock
        lastRewardBlock = _startBlock;
    }

    /**
     * @notice Deposit staked tokens and compounds pending rewards
     * @param amount amount to deposit (in X2Y2)
     */
    function deposit(uint256 amount) external nonReentrant {
        require(amount > 0, 'Deposit: Amount must be > 0');
        require(block.number >= START_BLOCK, 'Deposit: Not started yet');

        // Update pool information
        _updatePool();

        // Transfer X2Y2 tokens to this contract
        x2y2Token.safeTransferFrom(msg.sender, address(this), amount);

        uint256 pendingRewards;

        // If not new deposit, calculate pending rewards (for auto-compounding)
        if (userInfo[msg.sender].amount > 0) {
            pendingRewards =
                ((userInfo[msg.sender].amount * accTokenPerShare) / PRECISION_FACTOR) -
                userInfo[msg.sender].rewardDebt;
        }

        // Adjust user information
        userInfo[msg.sender].amount += (amount + pendingRewards);
        userInfo[msg.sender].rewardDebt =
            (userInfo[msg.sender].amount * accTokenPerShare) /
            PRECISION_FACTOR;

        // Increase totalAmountStaked
        totalAmountStaked += (amount + pendingRewards);

        emit Deposit(msg.sender, amount, pendingRewards);
    }

    /**
     * @notice Compound based on pending rewards
     */
    function harvestAndCompound() external nonReentrant {
        // Update pool information
        _updatePool();

        // Calculate pending rewards
        uint256 pendingRewards = ((userInfo[msg.sender].amount * accTokenPerShare) /
            PRECISION_FACTOR) - userInfo[msg.sender].rewardDebt;

        // Return if no pending rewards
        if (pendingRewards == 0) {
            // It doesn't throw revertion (to help with the fee-sharing auto-compounding contract)
            return;
        }

        // Adjust user amount for pending rewards
        userInfo[msg.sender].amount += pendingRewards;

        // Adjust totalAmountStaked
        totalAmountStaked += pendingRewards;

        // Recalculate reward debt based on new user amount
        userInfo[msg.sender].rewardDebt =
            (userInfo[msg.sender].amount * accTokenPerShare) /
            PRECISION_FACTOR;

        emit Compound(msg.sender, pendingRewards);
    }

    /**
     * @notice Update pool rewards
     */
    function updatePool() external nonReentrant {
        _updatePool();
    }

    /**
     * @notice Withdraw staked tokens and compound pending rewards
     * @param amount amount to withdraw
     */
    function withdraw(uint256 amount) external nonReentrant {
        require(
            (userInfo[msg.sender].amount >= amount) && (amount > 0),
            'Withdraw: Amount must be > 0 or lower than user balance'
        );

        // Update pool
        _updatePool();

        // Calculate pending rewards
        uint256 pendingRewards = ((userInfo[msg.sender].amount * accTokenPerShare) /
            PRECISION_FACTOR) - userInfo[msg.sender].rewardDebt;

        // Adjust user information
        userInfo[msg.sender].amount = userInfo[msg.sender].amount + pendingRewards - amount;
        userInfo[msg.sender].rewardDebt =
            (userInfo[msg.sender].amount * accTokenPerShare) /
            PRECISION_FACTOR;

        // Adjust total amount staked
        totalAmountStaked = totalAmountStaked + pendingRewards - amount;

        // Transfer X2Y2 tokens to the sender
        x2y2Token.safeTransfer(msg.sender, amount);

        emit Withdraw(msg.sender, amount, pendingRewards);
    }

    /**
     * @notice Withdraw all staked tokens and collect tokens
     */
    function withdrawAll() external nonReentrant {
        require(userInfo[msg.sender].amount > 0, 'Withdraw: Amount must be > 0');

        // Update pool
        _updatePool();

        // Calculate pending rewards and amount to transfer (to the sender)
        uint256 pendingRewards = ((userInfo[msg.sender].amount * accTokenPerShare) /
            PRECISION_FACTOR) - userInfo[msg.sender].rewardDebt;

        uint256 amountToTransfer = userInfo[msg.sender].amount + pendingRewards;

        // Adjust total amount staked
        totalAmountStaked = totalAmountStaked - userInfo[msg.sender].amount;

        // Adjust user information
        userInfo[msg.sender].amount = 0;
        userInfo[msg.sender].rewardDebt = 0;

        // Transfer X2Y2 tokens to the sender
        x2y2Token.safeTransfer(msg.sender, amountToTransfer);

        emit Withdraw(msg.sender, amountToTransfer, pendingRewards);
    }

    /**
     * @notice Calculate pending rewards for a user
     * @param user address of the user
     * @return Pending rewards
     */
    function calculatePendingRewards(address user) external view returns (uint256) {
        if ((block.number > lastRewardBlock) && (totalAmountStaked != 0)) {
            uint256 multiplier = _getMultiplier(lastRewardBlock, block.number);

            uint256 tokenRewardForStaking = multiplier * rewardPerBlockForStaking;

            uint256 adjustedEndBlock = endBlock;
            uint256 adjustedCurrentPhase = currentPhase;

            // Check whether to adjust multipliers and reward per block
            while (
                (block.number > adjustedEndBlock) && (adjustedCurrentPhase < (NUMBER_PERIODS - 1))
            ) {
                // Update current phase
                adjustedCurrentPhase++;

                // Update rewards per block
                uint256 adjustedRewardPerBlockForStaking = stakingPeriod[adjustedCurrentPhase]
                    .rewardPerBlockForStaking;

                // Calculate adjusted block number
                uint256 previousEndBlock = adjustedEndBlock;

                // Update end block
                adjustedEndBlock =
                    previousEndBlock +
                    stakingPeriod[adjustedCurrentPhase].periodLengthInBlock;

                // Calculate new multiplier
                uint256 newMultiplier = (block.number <= adjustedEndBlock)
                    ? (block.number - previousEndBlock)
                    : stakingPeriod[adjustedCurrentPhase].periodLengthInBlock;

                // Adjust token rewards for staking
                tokenRewardForStaking += (newMultiplier * adjustedRewardPerBlockForStaking);
            }

            uint256 adjustedTokenPerShare = accTokenPerShare +
                (tokenRewardForStaking * PRECISION_FACTOR) /
                totalAmountStaked;

            return
                (userInfo[user].amount * adjustedTokenPerShare) /
                PRECISION_FACTOR -
                userInfo[user].rewardDebt;
        } else {
            return
                (userInfo[user].amount * accTokenPerShare) /
                PRECISION_FACTOR -
                userInfo[user].rewardDebt;
        }
    }

    /**
     * @notice Update reward variables of the pool
     */
    function _updatePool() internal {
        if (block.number <= lastRewardBlock) {
            return;
        }

        if (totalAmountStaked == 0) {
            lastRewardBlock = block.number;
            return;
        }

        // Calculate multiplier
        uint256 multiplier = _getMultiplier(lastRewardBlock, block.number);

        // Calculate rewards for staking and others
        uint256 tokenRewardForStaking = multiplier * rewardPerBlockForStaking;
        uint256 tokenRewardForOthers = multiplier * rewardPerBlockForOthers;

        // Check whether to adjust multipliers and reward per block
        while ((block.number > endBlock) && (currentPhase < (NUMBER_PERIODS - 1))) {
            // Update rewards per block
            _updateRewardsPerBlock(endBlock);

            uint256 previousEndBlock = endBlock;

            // Adjust the end block
            endBlock += stakingPeriod[currentPhase].periodLengthInBlock;

            // Adjust multiplier to cover the missing periods with other lower inflation schedule
            uint256 newMultiplier = _getMultiplier(previousEndBlock, block.number);

            // Adjust token rewards
            tokenRewardForStaking += (newMultiplier * rewardPerBlockForStaking);
            tokenRewardForOthers += (newMultiplier * rewardPerBlockForOthers);
        }

        // Mint tokens only if token rewards for staking are not null
        if (tokenRewardForStaking > 0) {
            // It allows protection against potential issues to prevent funds from being locked
            bool mintStatus = x2y2Token.mint(address(this), tokenRewardForStaking);
            if (mintStatus) {
                accTokenPerShare =
                    accTokenPerShare +
                    ((tokenRewardForStaking * PRECISION_FACTOR) / totalAmountStaked);
            }

            x2y2Token.mint(tokenSplitter, tokenRewardForOthers);
        }

        // Update last reward block only if it wasn't updated after or at the end block
        if (lastRewardBlock <= endBlock) {
            lastRewardBlock = block.number;
        }
    }

    /**
     * @notice Update rewards per block
     * @dev Rewards are halved by 2 (for staking + others)
     */
    function _updateRewardsPerBlock(uint256 _newStartBlock) internal {
        // Update current phase
        currentPhase++;

        // Update rewards per block
        rewardPerBlockForStaking = stakingPeriod[currentPhase].rewardPerBlockForStaking;
        rewardPerBlockForOthers = stakingPeriod[currentPhase].rewardPerBlockForOthers;

        emit NewRewardsPerBlock(
            currentPhase,
            _newStartBlock,
            rewardPerBlockForStaking,
            rewardPerBlockForOthers
        );
    }

    /**
     * @notice Return reward multiplier over the given "from" to "to" block.
     * @param from block to start calculating reward
     * @param to block to finish calculating reward
     * @return the multiplier for the period
     */
    function _getMultiplier(uint256 from, uint256 to) internal view returns (uint256) {
        if (to <= endBlock) {
            return to - from;
        } else if (from >= endBlock) {
            return 0;
        } else {
            return endBlock - from;
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface IRewardConvertor {
    function convert(
        address tokenToSell,
        address tokenToBuy,
        uint256 amount,
        bytes calldata additionalData
    ) external returns (uint256);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import {IERC20} from '@openzeppelin/contracts/token/ERC20/IERC20.sol';

interface IMintableERC20 is IERC20 {
    function SUPPLY_CAP() external view returns (uint256);

    function mint(address account, uint256 amount) external returns (bool);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface ITokenStaked {
    function getTotalStaked() external view returns (uint256);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)

pragma solidity ^0.8.0;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     *
     * _Available since v3.1._
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {AccessControl-_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) external;
}

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

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        // Inspired by OraclizeAPI's implementation - MIT licence
        // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol

        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0x00";
        }
        uint256 temp = value;
        uint256 length = 0;
        while (temp != 0) {
            length++;
            temp >>= 8;
        }
        return toHexString(value, length);
    }

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface IStakeFor {
    function depositFor(address user, uint256 amount) external returns (bool);
}

{
  "optimizer": {
    "enabled": true,
    "runs": 100
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"contract TokenSplitter","name":"tokenSplitter_","type":"address"},{"internalType":"contract FeeSharingSetter","name":"feeSetter_","type":"address"},{"internalType":"contract IWETH","name":"weth_","type":"address"},{"internalType":"address","name":"operator_","type":"address"},{"internalType":"address","name":"admin_","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"previousAdminRole","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"newAdminRole","type":"bytes32"}],"name":"RoleAdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleGranted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleRevoked","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"inputs":[],"name":"DEFAULT_ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"OPERATOR_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"canRelease","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"feeSetter","outputs":[{"internalType":"contract FeeSharingSetter","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleAdmin","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"grantRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IERC20[]","name":"tokens","type":"address[]"}],"name":"release","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IERC20[]","name":"tokens","type":"address[]"},{"internalType":"address[]","name":"accounts","type":"address[]"}],"name":"releaseAndUpdateReward","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tokenSplitter","outputs":[{"internalType":"contract TokenSplitter","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"weth","outputs":[{"internalType":"contract IWETH","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"contract IERC20[]","name":"tokens","type":"address[]"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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

000000000000000000000000e7643ff46c6f88ed812b3e7198c2fa2522d630cc000000000000000000000000f704353b5c98577d3b4274614e62fc79676d33bd000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc200000000000000000000000000000000000000000000000000000000000000000000000000000000000000005d7cca9fb832bbd99c8bd720ebda39b028648301

-----Decoded View---------------
Arg [0] : tokenSplitter_ (address): 0xe7643Ff46C6f88ED812b3E7198c2fA2522d630CC
Arg [1] : feeSetter_ (address): 0xF704353B5C98577d3B4274614e62Fc79676D33bD
Arg [2] : weth_ (address): 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2
Arg [3] : operator_ (address): 0x0000000000000000000000000000000000000000
Arg [4] : admin_ (address): 0x5D7CcA9Fb832BBD99C8bD720EbdA39B028648301

-----Encoded View---------------
5 Constructor Arguments found :
Arg [0] : 000000000000000000000000e7643ff46c6f88ed812b3e7198c2fa2522d630cc
Arg [1] : 000000000000000000000000f704353b5c98577d3b4274614e62fc79676d33bd
Arg [2] : 000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [4] : 0000000000000000000000005d7cca9fb832bbd99c8bd720ebda39b028648301