// File: contracts/demo/StakingUpgrader.sol



// SPDX-License-Identifier: GNU-GPL v3.0 or later

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/access/Ownable.sol";
import "../interfaces/IFNFTHandler.sol";
import "../interfaces/IAddressRegistry.sol";
import "../interfaces/IRevest.sol";
import "../interfaces/IOutputReceiver.sol";
import "../interfaces/IOracleDispatch.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import '@openzeppelin/contracts/utils/introspection/ERC165.sol';
import './Staking.sol';
import '../RewardsHandler.sol';

/**
 * @title
 * @dev
 */
contract StakingUpgrader is Ownable  {

    address public constant MULTISIG = 0x801e08919a483ceA4C345b5f8789E506e2624ccf;
    address public stakingContract;
    address public rewardsHandler;
    address public addressRegistry;
    address internal immutable WETH;

    uint[4] internal interestRates = [4, 13, 27, 56];

    constructor(address _registry, address _stake, address _rewards, address _weth) {
        stakingContract = _stake;
        rewardsHandler = _rewards;
        addressRegistry = _registry;
        WETH = _weth;
    }

    function upgradeStakingPosition(uint fnftId, uint newMaturity) external {
        require(newMaturity == 3 || newMaturity == 6 || newMaturity == 12, 'E055');
        require(IFNFTHandler(getRegistry().getRevestFNFT()).getBalance(_msgSender(), fnftId) == 1, 'E061');
        // This may be unnecessary and constraining
        require(IOutputReceiver(stakingContract).getValue(fnftId) == 0, 'Must claim staking rewards to upgrade');
        Staking stake = Staking(stakingContract);
        RewardsHandler rewards = RewardsHandler(rewardsHandler);
        (uint allocPoints, uint timePeriod) = stake.config(fnftId);
        require(newMaturity > timePeriod, 'Can only upgrade staking maturity');
        // Determine if this is a single-asset or LP position
        bool isBasic;
        {
            // Will be zero if this is an LP stake
            uint wethTokenAlloc = IRewardsHandler(rewardsHandler).getAllocPoint(fnftId, WETH, true);
            isBasic = wethTokenAlloc > 0;
        }
        // Fetch alloc points total and subtract old alloc points from it
        uint pointsToAdjust = (isBasic ? rewards.totalBasicAllocPoint() : rewards.totalLPAllocPoint()) - allocPoints;
        // Adjust alloc points up
        allocPoints = allocPoints * getInterestRate(newMaturity) / getInterestRate(timePeriod);
        // Add new alloc points back to total
        pointsToAdjust += allocPoints;
        uint[] memory ids = new uint[](1);
        uint[] memory allocs = new uint[](1);
        ids[0] = fnftId;
        allocs[0] = allocPoints;
            {
                uint[] memory times = new uint[](1);
                times[0] = newMaturity;
                // Calls will only succeed if this contract owns Staking.sol
                stake.manualMapConfig(ids, allocs, times);
            }
        if(isBasic) {
            // Will implicitly set pending rewards to zero
            // For this reason, rewards must be claimed prior to upgarde
            rewards.manualMapRVSTBasic(ids, allocs);
            rewards.manualMapWethBasic(ids, allocs);
            // Zero argument will cause no change to that value
            rewards.manualSetAllocPoints(pointsToAdjust, 0);
        } else {
            rewards.manualMapRVSTLP(ids, allocs);
            rewards.manualMapWethLP(ids, allocs);
            rewards.manualSetAllocPoints(0, pointsToAdjust);
        }
    }

    /// Calling this function will break upgradeability and return ownership to multisig
    function revertStakingOwnership() external onlyOwner {
        Ownable(stakingContract).transferOwnership(MULTISIG);
    }

    /// Calling this function will break upgradeability and return ownership to multisig
    function revertRewardsOwnership() external onlyOwner {
        Ownable(rewardsHandler).transferOwnership(MULTISIG);
    }

    function setRegistry(address _registry) external onlyOwner() {
        addressRegistry = _registry;
    }

    function getRegistry() public view returns (IAddressRegistry) {
        return IAddressRegistry(addressRegistry);
    }

    function getInterestRate(uint months) public view returns (uint) {
        if (months <= 1) {
            return interestRates[0];
        } else if (months <= 3) {
            return interestRates[1];
        } else if (months <= 6) {
            return interestRates[2];
        } else {
            return interestRates[3];
        }
    }

}
// File: @openzeppelin/contracts/access/Ownable.sol



// SPDX-License-Identifier: MIT

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() {
        _setOwner(_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 {
        _setOwner(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");
        _setOwner(newOwner);
    }

    function _setOwner(address newOwner) private {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// File: contracts/interfaces/IFNFTHandler.sol



// SPDX-License-Identifier: GNU-GPL v3.0 or later

pragma solidity >=0.8.0;


interface IFNFTHandler  {
    function mint(address account, uint id, uint amount, bytes memory data) external;

    function mintBatchRec(address[] memory recipients, uint[] memory quantities, uint id, uint newSupply, bytes memory data) external;

    function mintBatch(address to, uint[] memory ids, uint[] memory amounts, bytes memory data) external;

    function setURI(string memory newuri) external;

    function burn(address account, uint id, uint amount) external;

    function burnBatch(address account, uint[] memory ids, uint[] memory amounts) external;

    function getBalance(address tokenHolder, uint id) external view returns (uint);

    function getSupply(uint fnftId) external view returns (uint);

    function getNextId() external view returns (uint);
}

// File: contracts/interfaces/IAddressRegistry.sol



// SPDX-License-Identifier: GNU-GPL v3.0 or later

pragma solidity >=0.8.0;

/**
 * @title Provider interface for Revest FNFTs
 * @dev
 *
 */
interface IAddressRegistry {

    function initialize(
        address lock_manager_,
        address liquidity_,
        address revest_token_,
        address token_vault_,
        address revest_,
        address fnft_,
        address metadata_,
        address admin_,
        address rewards_
    ) external;

    function getAdmin() external view returns (address);

    function setAdmin(address admin) external;

    function getLockManager() external view returns (address);

    function setLockManager(address manager) external;

    function getTokenVault() external view returns (address);

    function setTokenVault(address vault) external;

    function getRevestFNFT() external view returns (address);

    function setRevestFNFT(address fnft) external;

    function getMetadataHandler() external view returns (address);

    function setMetadataHandler(address metadata) external;

    function getRevest() external view returns (address);

    function setRevest(address revest) external;

    function getDEX(uint index) external view returns (address);

    function setDex(address dex) external;

    function getRevestToken() external view returns (address);

    function setRevestToken(address token) external;

    function getRewardsHandler() external view returns(address);

    function setRewardsHandler(address esc) external;

    function getAddress(bytes32 id) external view returns (address);

    function getLPs() external view returns (address);

    function setLPs(address liquidToken) external;

}

// File: contracts/interfaces/IRevest.sol



// SPDX-License-Identifier: GNU-GPL v3.0 or later

pragma solidity >=0.8.0;

interface IRevest {
    event FNFTTimeLockMinted(
        address indexed asset,
        address indexed from,
        uint indexed fnftId,
        uint endTime,
        uint[] quantities,
        FNFTConfig fnftConfig
    );

    event FNFTValueLockMinted(
        address indexed primaryAsset,
        address indexed from,
        uint indexed fnftId,
        address compareTo,
        address oracleDispatch,
        uint[] quantities,
        FNFTConfig fnftConfig
    );

    event FNFTAddressLockMinted(
        address indexed asset,
        address indexed from,
        uint indexed fnftId,
        address trigger,
        uint[] quantities,
        FNFTConfig fnftConfig
    );

    event FNFTWithdrawn(
        address indexed from,
        uint indexed fnftId,
        uint indexed quantity
    );

    event FNFTSplit(
        address indexed from,
        uint[] indexed newFNFTId,
        uint[] indexed proportions,
        uint quantity
    );

    event FNFTUnlocked(
        address indexed from,
        uint indexed fnftId
    );

    event FNFTMaturityExtended(
        address indexed from,
        uint indexed fnftId,
        uint indexed newExtendedTime
    );

    event FNFTAddionalDeposited(
        address indexed from,
        uint indexed newFNFTId,
        uint indexed quantity,
        uint amount
    );

    struct FNFTConfig {
        address asset; // The token being stored
        address pipeToContract; // Indicates if FNFT will pipe to another contract
        uint depositAmount; // How many tokens
        uint depositMul; // Deposit multiplier
        uint split; // Number of splits remaining
        uint depositStopTime; //
        bool maturityExtension; // Maturity extensions remaining
        bool isMulti; //
        bool nontransferrable; // False by default (transferrable) //
    }

    // Refers to the global balance for an ERC20, encompassing possibly many FNFTs
    struct TokenTracker {
        uint lastBalance;
        uint lastMul;
    }

    enum LockType {
        DoesNotExist,
        TimeLock,
        ValueLock,
        AddressLock
    }

    struct LockParam {
        address addressLock;
        uint timeLockExpiry;
        LockType lockType;
        ValueLock valueLock;
    }

    struct Lock {
        address addressLock;
        LockType lockType;
        ValueLock valueLock;
        uint timeLockExpiry;
        uint creationTime;
        bool unlocked;
    }

    struct ValueLock {
        address asset;
        address compareTo;
        address oracle;
        uint unlockValue;
        bool unlockRisingEdge;
    }

    function mintTimeLock(
        uint endTime,
        address[] memory recipients,
        uint[] memory quantities,
        IRevest.FNFTConfig memory fnftConfig
    ) external payable returns (uint);

    function mintValueLock(
        address primaryAsset,
        address compareTo,
        uint unlockValue,
        bool unlockRisingEdge,
        address oracleDispatch,
        address[] memory recipients,
        uint[] memory quantities,
        IRevest.FNFTConfig memory fnftConfig
    ) external payable returns (uint);

    function mintAddressLock(
        address trigger,
        bytes memory arguments,
        address[] memory recipients,
        uint[] memory quantities,
        IRevest.FNFTConfig memory fnftConfig
    ) external payable returns (uint);

    function withdrawFNFT(uint tokenUID, uint quantity) external;

    function unlockFNFT(uint tokenUID) external;

    function splitFNFT(
        uint fnftId,
        uint[] memory proportions,
        uint quantity
    ) external returns (uint[] memory newFNFTIds);

    function depositAdditionalToFNFT(
        uint fnftId,
        uint amount,
        uint quantity
    ) external returns (uint);

    function setFlatWeiFee(uint wethFee) external;

    function setERC20Fee(uint erc20) external;

    function getFlatWeiFee() external returns (uint);

    function getERC20Fee() external returns (uint);


}

// File: contracts/interfaces/IOutputReceiver.sol



// SPDX-License-Identifier: GNU-GPL v3.0 or later

pragma solidity >=0.8.0;

import "./IRegistryProvider.sol";
import '@openzeppelin/contracts/utils/introspection/IERC165.sol';


/**
 * @title Provider interface for Revest FNFTs
 */
interface IOutputReceiver is IRegistryProvider, IERC165 {

    function receiveRevestOutput(
        uint fnftId,
        address asset,
        address payable owner,
        uint quantity
    ) external;

    function getCustomMetadata(uint fnftId) external view returns (string memory);

    function getValue(uint fnftId) external view returns (uint);

    function getAsset(uint fnftId) external view returns (address);

    function getOutputDisplayValues(uint fnftId) external view returns (bytes memory);

}

// File: contracts/interfaces/IOracleDispatch.sol



// SPDX-License-Identifier: GNU-GPL v3.0 or later

pragma solidity >=0.8.0;

interface IOracleDispatch {

    // Attempts to update oracle and returns true if successful. Returns true if update unnecessary
    function updateOracle(address asset, address compareTo) external returns (bool);

    // Will return true if oracle does not need to be poked or if poke was successful
    function pokeOracle(address asset, address compareTo) external returns (bool);

    // Will return true if oracle already initialized, if oracle has successfully been initialized by this call,
    // or if oracle does not need to be initialized
    function initializeOracle(address asset, address compareTo) external returns (bool);

    // Gets the value of the asset
    // Oracle = the oracle address in specific. Optional parameter
    // Inverted pair = whether or not this call represents an inversion of typical type (ERC20 underlying, USDC compareTo) to (USDC underlying, ERC20 compareTo)
    // Must take inverse of value in this case to get REAL value
    function getValueOfAsset(
        address asset,
        address compareTo,
        bool risingEdge
    )  external view returns (uint);

    // Does this oracle need to be updated prior to our reading the price?
    // Return false if we are within desired time period
    // Or if this type of oracle does not require updates
    function oracleNeedsUpdates(address asset, address compareTo) external view returns (bool);

    // Does this oracle need to be poked prior to update and withdrawal?
    function oracleNeedsPoking(address asset, address compareTo) external view returns (bool);

    function oracleNeedsInitialization(address asset, address compareTo) external view returns (bool);

    //Only ever called if oracle needs initialization
    function canOracleBeCreatedForRoute(address asset, address compareTo) external view returns (bool);

    // How long to wait after poking the oracle before you can update it again and withdraw
    function getTimePeriodAfterPoke(address asset, address compareTo) external view returns (uint);

    // Returns a direct reference to the address that the specific contract for this pair is registered at
    function getOracleForPair(address asset, address compareTo) external view returns (address);

    // Returns a boolean if this oracle can provide data for the requested pair, used during FNFT creation
    function getPairHasOracle(address asset, address compareTo) external view returns (bool);

    //Returns the instantaneous price of asset and the decimals for that price
    function getInstantPrice(address asset, address compareTo) external view returns (uint);
}

// File: @openzeppelin/contracts/token/ERC20/IERC20.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

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

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

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

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

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

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

// File: @openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

// File: @openzeppelin/contracts/utils/introspection/ERC165.sol



// SPDX-License-Identifier: MIT

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;
    }
}

// File: contracts/demo/Staking.sol



// SPDX-License-Identifier: GNU-GPL v3.0 or later

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/access/Ownable.sol";
import "../interfaces/IOutputReceiver.sol";
import "../interfaces/IRevest.sol";
import "../interfaces/IAddressRegistry.sol";
import "../interfaces/IRewardsHandler.sol";
import "../interfaces/IFNFTHandler.sol";
import "../interfaces/IAddressLock.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import '@openzeppelin/contracts/utils/introspection/ERC165.sol';

contract Staking is Ownable, IOutputReceiver, ERC165, IAddressLock {
    using SafeERC20 for IERC20;

    address private revestAddress;
    address public lpAddress;
    address public rewardsHandlerAddress;
    address public addressRegistry;

    uint private constant ONE_DAY = 86400;

    uint private constant WINDOW_ONE = ONE_DAY;
    uint private constant WINDOW_THREE = ONE_DAY*5;
    uint private constant WINDOW_SIX = ONE_DAY*9;
    uint private constant WINDOW_TWELVE = ONE_DAY*14;

    address internal immutable WETH;

    uint[4] internal interestRates = [4, 13, 27, 56];
    string public customMetadataUrl = "https://revest.mypinata.cloud/ipfs/QmeSaVihizntuDQL5BgsujK2nK6bkkwXXzHATGGjM2uyRr";
    string public addressMetadataUrl = "https://revest.mypinata.cloud/ipfs/QmY3KUBToJBthPLvN1Knd7Y51Zxx7FenFhXYV8tPEMVAP3";

    event StakedRevest(uint indexed timePeriod, bool indexed isBasic, uint indexed amount, uint fnftId);

    struct StakingConfig {
        uint allocPoints;
        uint timePeriod;
    }

    // fnftId -> allocPoints
    mapping(uint => StakingConfig) public config;

    constructor(
        address revestAddress_,
        address rewardsHandlerAddress_,
        address addressRegistry_,
        address wrappedEth_
    ) {
        revestAddress = revestAddress_;
        addressRegistry = addressRegistry_;
        rewardsHandlerAddress = rewardsHandlerAddress_;
        WETH = wrappedEth_;
    }

    function supportsInterface(bytes4 interfaceId) public view override (ERC165, IERC165) returns (bool) {
        return (
            interfaceId == type(IOutputReceiver).interfaceId
            || interfaceId == type(IAddressLock).interfaceId
            || super.supportsInterface(interfaceId)
        );
    }

    function stakeBasicTokens(uint amount, uint monthsMaturity) public returns (uint) {
        require(monthsMaturity == 1 || monthsMaturity == 3 || monthsMaturity == 6 || monthsMaturity == 12, 'E055');
        IERC20(revestAddress).safeTransferFrom(msg.sender, address(this), amount * 1);
        IERC20(revestAddress).approve(address(getRevest()), amount * 1);

        IRevest.FNFTConfig memory fnftConfig;
        fnftConfig.asset = revestAddress;
        fnftConfig.depositAmount = amount;

        fnftConfig.pipeToContract = address(this);

        address[] memory recipients = new address[](1);
        recipients[0] = _msgSender();

        uint[] memory quantities = new uint[](1);
        // FNFT quantity will always be singular
        quantities[0] = 1;

        uint fnftId = getRevest().mintAddressLock(address(this), '', recipients, quantities, fnftConfig);

        uint interestRate = getInterestRate(monthsMaturity);
        uint allocPoint = amount * interestRate;
        uint currentShares = IRewardsHandler(rewardsHandlerAddress).getAllocPoint(fnftId, revestAddress, true);
        uint newAllocPoint = currentShares + allocPoint;

        StakingConfig memory stakeConfig = StakingConfig(allocPoint, monthsMaturity);
        config[fnftId] = stakeConfig;

        IRewardsHandler(rewardsHandlerAddress).updateBasicShares(fnftId, newAllocPoint);
        emit StakedRevest(monthsMaturity, true, amount, fnftId);
        return fnftId;
    }

    function stakeLPTokens(uint amount, uint monthsMaturity) public returns (uint) {
        require(lpAddress != address(0x0), "E071");
        require(monthsMaturity == 1 || monthsMaturity == 3 || monthsMaturity == 6 || monthsMaturity == 12, 'E055');
        IERC20(lpAddress).safeTransferFrom(msg.sender, address(this), amount * 1);
        IERC20(lpAddress).approve(address(getRevest()), amount * 1);

        IRevest.FNFTConfig memory fnftConfig;
        fnftConfig.asset = lpAddress;
        fnftConfig.depositAmount = amount;

        fnftConfig.pipeToContract = address(this);

        address[] memory recipients = new address[](1);
        recipients[0] = _msgSender();

        uint[] memory quantities = new uint[](1);
        quantities[0] = 1;

        uint fnftId = getRevest().mintAddressLock(address(this), '', recipients, quantities, fnftConfig);

        uint interestRate = getInterestRate(monthsMaturity);
        uint allocPoint = amount * interestRate;
        uint currentShares = IRewardsHandler(rewardsHandlerAddress).getAllocPoint(fnftId, revestAddress, true);
        uint newAllocPoint = currentShares + allocPoint;


        StakingConfig memory stakeConfig = StakingConfig(allocPoint, monthsMaturity);
        config[fnftId] = stakeConfig;

        IRewardsHandler(rewardsHandlerAddress).updateLPShares(fnftId, newAllocPoint);
        emit StakedRevest(monthsMaturity, false, amount, fnftId);
        return fnftId;
    }

    function getInterestRate(uint months) public view returns (uint) {
        if (months <= 1) {
            return interestRates[0];
        } else if (months <= 3) {
            return interestRates[1];
        } else if (months <= 6) {
            return interestRates[2];
        } else {
            return interestRates[3];
        }
    }

    function updateInterestRates(uint[4] memory newRates) external onlyOwner {
        interestRates = newRates;
    }

    function receiveRevestOutput(
        uint fnftId,
        address asset,
        address payable owner,
        uint quantity
    ) external override {
        require(_msgSender() == getRegistry().getTokenVault(), "E016");
        uint totalQuantity = quantity * ITokenVault(getRegistry().getTokenVault()).getFNFT(fnftId).depositAmount;
        if (asset == revestAddress) {
            unstakeBasicTokens(fnftId, owner);
        } else if (asset == lpAddress) {
            unstakeLPTokens(fnftId, owner);
        } else {
            require(false, "E072");
        }
        IERC20(asset).safeTransfer(owner, totalQuantity);
    }

    function claimRewards(uint fnftId) external {
        // Check to make sure user owns the fnftId
        require(IFNFTHandler(getRegistry().getRevestFNFT()).getBalance(_msgSender(), fnftId) == 1, 'E061');
        // Receive rewards
        IRewardsHandler(rewardsHandlerAddress).claimRewards(fnftId, _msgSender());
    }

    function unstakeBasicTokens(uint fnftId, address user) internal {
        // Receive rewards
        IRewardsHandler(rewardsHandlerAddress).claimRewards(fnftId, user);

        // Remove allocation points
        uint allocPoint = config[fnftId].allocPoints;
        uint currentShares = IRewardsHandler(rewardsHandlerAddress).getAllocPoint(fnftId, revestAddress, true);
        uint newAllocPoint = currentShares - allocPoint;
        IRewardsHandler(rewardsHandlerAddress).updateBasicShares(fnftId, newAllocPoint);
    }

    function unstakeLPTokens(uint fnftId, address user) internal {
        IRewardsHandler(rewardsHandlerAddress).claimRewards(fnftId, user);

        // Remove allocation points
        uint allocPoint = config[fnftId].allocPoints;
        uint currentShares = IRewardsHandler(rewardsHandlerAddress).getAllocPoint(fnftId, lpAddress, true);
        uint newAllocPoint = currentShares - allocPoint;
        IRewardsHandler(rewardsHandlerAddress).updateLPShares(fnftId, newAllocPoint);
    }

    function updateLock(uint fnftId, uint lockId, bytes memory arguments) external override {
        require(IFNFTHandler(getRegistry().getRevestFNFT()).getBalance(_msgSender(), fnftId) == 1, 'E061');
        // Receive rewards
        IRewardsHandler(rewardsHandlerAddress).claimRewards(fnftId, _msgSender());
    }

    function needsUpdate() external pure override returns (bool) {
        return true;
    }

    function setCustomMetadata(string memory _customMetadataUrl) external onlyOwner {
        customMetadataUrl = _customMetadataUrl;
    }

    function getCustomMetadata(uint fnftId) external view override returns (string memory) {
        return customMetadataUrl;
    }

    function getOutputDisplayValues(uint fnftId) external view override returns (bytes memory) {
        bool isRevestToken;
        {
            // Will be zero if this is an LP stake
            uint revestTokenAlloc = IRewardsHandler(rewardsHandlerAddress).getAllocPoint(fnftId, revestAddress, true);
            uint wethTokenAlloc = IRewardsHandler(rewardsHandlerAddress).getAllocPoint(fnftId, WETH, true);
            isRevestToken = revestTokenAlloc > 0 || wethTokenAlloc > 0;
        }
        uint revestRewards = IRewardsHandler(rewardsHandlerAddress).getRewards(fnftId, revestAddress);
        uint wethRewards = IRewardsHandler(rewardsHandlerAddress).getRewards(fnftId, WETH);
        return abi.encode(revestRewards, wethRewards, config[fnftId].timePeriod, isRevestToken ? revestAddress : lpAddress);
    }

    function setLPAddress(address lpAddress_) external onlyOwner {
        lpAddress = lpAddress_;
    }

    function setAddressRegistry(address addressRegistry_) external override onlyOwner {
        addressRegistry = addressRegistry_;
    }

    function getAddressRegistry() external view override returns (address) {
        return addressRegistry;
    }

    function getRevest() private view returns (IRevest) {
        return IRevest(getRegistry().getRevest());
    }

    function getRegistry() public view returns (IAddressRegistry) {
        return IAddressRegistry(addressRegistry);
    }

    function getValue(uint fnftId) external view override returns (uint) {
        uint revestStake = IRewardsHandler(rewardsHandlerAddress).getRewards(fnftId, revestAddress);
        return revestStake > 0 ? revestStake : IRewardsHandler(rewardsHandlerAddress).getRewards(fnftId, WETH);
    }

    function getAsset(uint fnftId) external view override returns (address) {
        uint revestStake = IRewardsHandler(rewardsHandlerAddress).getRewards(fnftId, revestAddress);
        return revestStake > 0 ? revestAddress : WETH;
    }

    function setMetadata(string memory _addressMetadataUrl) external onlyOwner {
        addressMetadataUrl = _addressMetadataUrl;
    }

    function setRewardsHandler(address _handler) external onlyOwner {
        rewardsHandlerAddress = _handler;
    }

    function getMetadata() external view override returns (string memory) {
        return addressMetadataUrl;
    }

    function getDisplayValues(uint fnftId, uint lockId) external view override returns (bytes memory) {
        StakingConfig memory lockDetails = config[fnftId];
        return abi.encode(lockDetails.allocPoints, lockDetails.timePeriod);
    }

    function createLock(uint fnftId, uint lockID, bytes memory arguments) external pure override {
        return;
    }

    function isUnlockable(uint fnftId, uint lockId) external view override returns (bool) {
        uint window = getWindow(config[fnftId].timePeriod);
        uint depositTime = ILockManager(getRegistry().getLockManager()).fnftIdToLock(fnftId).creationTime;
        bool mature = block.timestamp - depositTime > window;
        bool window_open = (block.timestamp - depositTime) % (config[fnftId].timePeriod * 30 * ONE_DAY) < window;
        return mature && window_open;
    }

    function getWindow(uint timePeriod) private pure returns (uint) {
        if(timePeriod == 1) {
            return WINDOW_ONE;
        }
        if(timePeriod == 3) {
            return WINDOW_THREE;
        }
        if(timePeriod == 6) {
            return WINDOW_SIX;
        }
        if(timePeriod == 12) {
            return WINDOW_TWELVE;
        }
        // If none of these are true, bad call
        require(false, "Invalid time window");
    }

    // Admin functions

    function manualMapConfig(
        uint[] memory fnftIds,
        uint[] memory allocPoints,
        uint[] memory timePeriod
    ) external onlyOwner {
        for(uint i = 0; i < fnftIds.length; i++) {
            config[fnftIds[i]].allocPoints = allocPoints[i];
            config[fnftIds[i]].timePeriod = timePeriod[i];
        }
    }

}

// File: contracts/RewardsHandler.sol



// SPDX-License-Identifier: GNU-GPL v3.0 or later

pragma solidity ^0.8.0;

import "./interfaces/IRewardsHandler.sol";
import "./utils/RevestAccessControl.sol";
import "@openzeppelin/contracts/access/AccessControlEnumerable.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

contract RewardsHandler is RevestAccessControl, IRewardsHandler {
    using SafeERC20 for IERC20;

    address internal immutable WETH;
    address internal immutable RVST;
    address public STAKING;
    uint public constant PRECISION = 10**27;

    uint public erc20Fee; // out of 1000
    uint constant public erc20multiplierPrecision = 1000;

    /**
     allocPoints is the same for all reward tokens (WETH vs RVST)
     lastMul is different for staking types (LP vs basic)
     */

    mapping(uint => UserBalance) public wethBasicBalances;
    mapping(uint => UserBalance) public wethLPBalances;
    mapping(uint => UserBalance) public rvstBasicBalances;
    mapping(uint => UserBalance) public rvstLPBalances;

    uint public wethBasicGlobalMul = PRECISION;
    uint public wethLPGlobalMul = PRECISION;
    uint public rvstBasicGlobalMul = PRECISION;
    uint public rvstLPGlobalMul = PRECISION;
    uint public totalLPAllocPoint = 1; // Total allocation points. Must be the sum of all allocation points. We start at 1 to avoid divide-by-zero
    uint public totalBasicAllocPoint = 1;

    constructor(address provider, address weth, address rvst) RevestAccessControl(provider) {
        WETH = weth;
        RVST = rvst;
    }

    /**
     * When receiving new allocPoint, you have to adjust the multiplier accordingly. Claim rewards as part of this
     * `allocPoint` will always be the same for WETH and RVST, but we need to update them both
     */
    function updateLPShares(uint fnftId, uint newAllocPoint) external override onlyStakingContract {
        // allocPoint is the same for wethBasic and rvstBasic
        totalLPAllocPoint = totalLPAllocPoint + newAllocPoint - wethLPBalances[fnftId].allocPoint;

        wethLPBalances[fnftId].allocPoint = newAllocPoint;
        wethLPBalances[fnftId].lastMul = wethLPGlobalMul;
        rvstLPBalances[fnftId].allocPoint = newAllocPoint;
        rvstLPBalances[fnftId].lastMul = rvstLPGlobalMul;
    }

    function updateBasicShares(uint fnftId, uint newAllocPoint) external override onlyStakingContract {
        // allocPoint is the same for wethBasic and rvstBasic
        totalBasicAllocPoint = totalBasicAllocPoint + newAllocPoint - wethBasicBalances[fnftId].allocPoint;

        wethBasicBalances[fnftId].allocPoint = newAllocPoint;
        wethBasicBalances[fnftId].lastMul = wethBasicGlobalMul;
        rvstBasicBalances[fnftId].allocPoint = newAllocPoint;
        rvstBasicBalances[fnftId].lastMul = rvstBasicGlobalMul;
    }

    /**
     * We require claiming all rewards simultaneously for simplicity
     * 0 = has neither, 1 = WETH, 2 = RVST, 3 = BOTH
     * Implicit assumption that user is authenticated to this FNFT prior to claiming
     */
    function claimRewards(uint fnftId, address caller) external override onlyStakingContract returns (uint) {
        bool hasWeth = claimRewardsForToken(fnftId, WETH, caller);
        bool hasRVST = claimRewardsForToken(fnftId, RVST, caller);
        if(hasWeth) {
            if(hasRVST) {
                return 3;
            } else {
                return 1;
            }
        }
        return hasRVST ? 2 : 0;
    }

    function claimRewardsForToken(uint fnftId, address token, address user) internal returns (bool) {
        (UserBalance storage lpBalance, UserBalance storage basicBalance) = getBalances(fnftId, token);
        uint amount = rewardsOwed(token, lpBalance, basicBalance);
        lpBalance.lastMul = getLPGlobalMul(token);
        basicBalance.lastMul = getBasicGlobalMul(token);

        IERC20(token).safeTransfer(user, amount);
        return amount > 0;
    }

    function getRewards(uint fnftId, address token) external view override returns (uint) {
        (UserBalance memory lpBalance, UserBalance memory basicBalance) = getBalances(fnftId, token);
        uint rewards = rewardsOwed(token, lpBalance, basicBalance);
        return rewards;
    }

    /**
     * Precondition: fee is already approved by msg sender
     * This simple function increments the multiplier for everyone with existing positions
     * Hence it covers the case where someone enters later, they start with a higher multiplier.
     * We increment totalAllocPoint with new depositors, and increment curMul with new income.
     */
    function receiveFee(address token, uint amount) external override {
        require(token == WETH || token == RVST, "Only WETH and RVST supported");
        IERC20(token).safeTransferFrom(msg.sender, address(this), amount);
        if(totalLPAllocPoint + totalBasicAllocPoint > 0) {
            uint basicMulInc = (amount * PRECISION / 2) / totalBasicAllocPoint;
            uint lpMulInc = (amount * PRECISION / 2) / totalLPAllocPoint;
            setBasicGlobalMul(token, getBasicGlobalMul(token) + basicMulInc);
            setLPGlobalMul(token, getLPGlobalMul(token) + lpMulInc);
        }
    }

    function getAllocPoint(uint fnftId, address token, bool isBasic) external view override returns (uint) {
        if (token == WETH) {
            return isBasic ? wethBasicBalances[fnftId].allocPoint : wethLPBalances[fnftId].allocPoint;
        } else {
            return isBasic ? rvstBasicBalances[fnftId].allocPoint : rvstLPBalances[fnftId].allocPoint;
        }
    }

    function setStakingContract(address stake) external override onlyOwner {
        STAKING = stake;
    }

    // INTERNAL FUNCTIONS

    /**
     * View-only function. Does not update any balances.
     */
    function rewardsOwed(address token, UserBalance memory lpBalance, UserBalance memory basicBalance) internal view returns (uint) {
        uint globalBalance = IERC20(token).balanceOf(address(this));
        uint lpRewards = (getLPGlobalMul(token) - lpBalance.lastMul) * lpBalance.allocPoint;
        uint basicRewards = (getBasicGlobalMul(token) - basicBalance.lastMul) * basicBalance.allocPoint;
        uint tokenAmount = (lpRewards + basicRewards) / PRECISION;
        return tokenAmount;
    }

    function getBalances(uint fnftId, address token) internal view returns (UserBalance storage, UserBalance storage) {
        return token == WETH ? (wethLPBalances[fnftId], wethBasicBalances[fnftId]) : (rvstLPBalances[fnftId], rvstBasicBalances[fnftId]);
    }

    function getLPGlobalMul(address token) internal view returns (uint) {
        return token == WETH ? wethLPGlobalMul : rvstLPGlobalMul;
    }

    function setLPGlobalMul(address token, uint newMul) internal {
        if (token == WETH) {
            wethLPGlobalMul = newMul;
        } else {
            rvstLPGlobalMul = newMul;
        }
    }

    function getBasicGlobalMul(address token) internal view returns (uint) {
        return token == WETH ? wethBasicGlobalMul : rvstBasicGlobalMul;
    }

    function setBasicGlobalMul(address token, uint newMul) internal {
        if (token == WETH) {
            wethBasicGlobalMul = newMul;
        } else {
            rvstBasicGlobalMul = newMul;
        }
    }

    // Admin functions for migration

    function manualMapRVSTBasic(
        uint[] memory fnfts,
        uint[] memory allocPoints
    ) external onlyOwner {
        for(uint i = 0; i < fnfts.length; i++) {
            UserBalance storage userBal = rvstBasicBalances[fnfts[i]];
            userBal.allocPoint = allocPoints[i];
            userBal.lastMul = rvstBasicGlobalMul;
        }
    }

    function manualMapRVSTLP(
        uint[] memory fnfts,
        uint[] memory allocPoints
    ) external onlyOwner {
        for(uint i = 0; i < fnfts.length; i++) {
            UserBalance storage userBal = rvstLPBalances[fnfts[i]];
            userBal.allocPoint = allocPoints[i];
            userBal.lastMul = rvstLPGlobalMul;
        }
    }

    function manualMapWethBasic(
        uint[] memory fnfts,
        uint[] memory allocPoints
    ) external onlyOwner {
        for(uint i = 0; i < fnfts.length; i++) {
            UserBalance storage userBal = wethBasicBalances[fnfts[i]];
            userBal.allocPoint = allocPoints[i];
            userBal.lastMul = wethBasicGlobalMul;
        }
    }

    function manualMapWethLP(
        uint[] memory fnfts,
        uint[] memory allocPoints
    ) external onlyOwner {
        for(uint i = 0; i < fnfts.length; i++) {
            UserBalance storage userBal = wethLPBalances[fnfts[i]];
            userBal.allocPoint = allocPoints[i];
            userBal.lastMul = wethLPGlobalMul;
        }
    }

    function manualSetAllocPoints(uint _totalBasic, uint _totalLP) external onlyOwner {
        if (_totalBasic > 0) {
            totalBasicAllocPoint = _totalBasic;
        }
        if (_totalLP > 0) {
            totalLPAllocPoint = _totalLP;
        }
    }

    modifier onlyStakingContract() {
        require(_msgSender() != address(0), "E004");
        require(_msgSender() == STAKING, "E060");
        _;
    }



}

// File: @openzeppelin/contracts/utils/Context.sol



// SPDX-License-Identifier: MIT

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;
    }
}

// File: contracts/interfaces/IRegistryProvider.sol



// SPDX-License-Identifier: GNU-GPL v3.0 or later

pragma solidity ^0.8.0;

import "../interfaces/IAddressRegistry.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "../interfaces/ILockManager.sol";
import "../interfaces/ITokenVault.sol";
import "../lib/uniswap/IUniswapV2Factory.sol";

interface IRegistryProvider {
    function setAddressRegistry(address revest) external;

    function getAddressRegistry() external view returns (address);
}

// File: @openzeppelin/contracts/utils/introspection/IERC165.sol



// SPDX-License-Identifier: MIT

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);
}

// File: contracts/interfaces/ILockManager.sol



// SPDX-License-Identifier: GNU-GPL v3.0 or later

pragma solidity >=0.8.0;

import "./IRevest.sol";

interface ILockManager {

    function createLock(uint fnftId, IRevest.LockParam memory lock) external returns (uint);

    function getLock(uint lockId) external view returns (IRevest.Lock memory);

    function fnftIdToLockId(uint fnftId) external view returns (uint);

    function fnftIdToLock(uint fnftId) external view returns (IRevest.Lock memory);

    function pointFNFTToLock(uint fnftId, uint lockId) external;

    function lockTypes(uint tokenId) external view returns (IRevest.LockType);

    function unlockFNFT(uint fnftId, address sender) external returns (bool);

    function getLockMaturity(uint fnftId) external view returns (bool);
}

// File: contracts/interfaces/ITokenVault.sol



// SPDX-License-Identifier: GNU-GPL v3.0 or later

pragma solidity >=0.8.0;

import "./IRevest.sol";

interface ITokenVault {

    function createFNFT(
        uint fnftId,
        IRevest.FNFTConfig memory fnftConfig,
        uint quantity,
        address from
    ) external;

    function withdrawToken(
        uint fnftId,
        uint quantity,
        address user
    ) external;

    function depositToken(
        uint fnftId,
        uint amount,
        uint quantity
    ) external;

    function cloneFNFTConfig(IRevest.FNFTConfig memory old) external returns (IRevest.FNFTConfig memory);

    function mapFNFTToToken(
        uint fnftId,
        IRevest.FNFTConfig memory fnftConfig
    ) external;

    function handleMultipleDeposits(
        uint fnftId,
        uint newFNFTId,
        uint amount
    ) external;

    function splitFNFT(
        uint fnftId,
        uint[] memory newFNFTIds,
        uint[] memory proportions,
        uint quantity
    ) external;

    function getFNFT(uint fnftId) external view returns (IRevest.FNFTConfig memory);
    function getFNFTCurrentValue(uint fnftId) external view returns (uint);
    function getNontransferable(uint fnftId) external view returns (bool);
    function getSplitsRemaining(uint fnftId) external view returns (uint);
}

// File: contracts/lib/uniswap/IUniswapV2Factory.sol



// SPDX-License-Identifier: UNLICENSED

pragma solidity ^0.8.0;

interface IUniswapV2Factory {
    event PairCreated(address indexed token0, address indexed token1, address pair, uint);

    function feeTo() external view returns (address);

    function feeToSetter() external view returns (address);

    function getPair(address tokenA, address tokenB) external view returns (address pair);

    function allPairs(uint) external view returns (address pair);

    function allPairsLength() external view returns (uint);

    function createPair(address tokenA, address tokenB) external returns (address pair);

    function setFeeTo(address) external;

    function setFeeToSetter(address) external;
}

// File: @openzeppelin/contracts/utils/Address.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    function _verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) private 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);
            }
        }
    }
}

// File: contracts/interfaces/IRewardsHandler.sol



// SPDX-License-Identifier: GNU-GPL v3.0 or later

pragma solidity >=0.8.0;

interface IRewardsHandler {

    struct UserBalance {
        uint allocPoint; // Allocation points
        uint lastMul;
    }

    function receiveFee(address token, uint amount) external;

    function updateLPShares(uint fnftId, uint newShares) external;

    function updateBasicShares(uint fnftId, uint newShares) external;

    function getAllocPoint(uint fnftId, address token, bool isBasic) external view returns (uint);

    function claimRewards(uint fnftId, address caller) external returns (uint);

    function setStakingContract(address stake) external;

    function getRewards(uint fnftId, address token) external view returns (uint);
}

// File: contracts/interfaces/IAddressLock.sol



// SPDX-License-Identifier: GNU-GPL v3.0 or later

pragma solidity >=0.8.0;

import "./IRegistryProvider.sol";
import '@openzeppelin/contracts/utils/introspection/IERC165.sol';

/**
 * @title Provider interface for Revest FNFTs
 * @dev Address locks MUST be non-upgradeable to be considered for trusted status
 * @author Revest
 */
interface IAddressLock is IRegistryProvider, IERC165{

    /// Creates a lock to the specified lockID
    /// @param fnftId the fnftId to map this lock to. Not recommended for typical locks, as it will break on splitting
    /// @param lockId the lockId to map this lock to. Recommended uint for storing references to lock configurations
    /// @param arguments an abi.encode() bytes array. Allows frontend to encode and pass in an arbitrary set of parameters
    /// @dev creates a lock for the specified lockId. Will be called during the creation process for address locks when the address
    ///      of a contract implementing this interface is passed in as the "trigger" address for minting an address lock. The bytes
    ///      representing any parameters this lock requires are passed through to this method, where abi.decode must be call on them
    function createLock(uint fnftId, uint lockId, bytes memory arguments) external;

    /// Updates a lock at the specified lockId
    /// @param fnftId the fnftId that can map to a lock config stored in implementing contracts. Not recommended, as it will break on splitting
    /// @param lockId the lockId that maps to the lock config which should be updated. Recommended for retrieving references to lock configurations
    /// @param arguments an abi.encode() bytes array. Allows frontend to encode and pass in an arbitrary set of parameters
    /// @dev updates a lock for the specified lockId. Will be called by the frontend from the information section if an update is requested
    ///      can further accept and decode parameters to use in modifying the lock's config or triggering other actions
    ///      such as triggering an on-chain oracle to update
    function updateLock(uint fnftId, uint lockId, bytes memory arguments) external;

    /// Whether or not the lock can be unlocked
    /// @param fnftId the fnftId that can map to a lock config stored in implementing contracts. Not recommended, as it will break on splitting
    /// @param lockId the lockId that maps to the lock config which should be updated. Recommended for retrieving references to lock configurations
    /// @dev this method is called during the unlocking and withdrawal processes by the Revest contract - it is also used by the frontend
    ///      if this method is returning true and someone attempts to unlock or withdraw from an FNFT attached to the requested lock, the request will succeed
    /// @return whether or not this lock may be unlocked
    function isUnlockable(uint fnftId, uint lockId) external view returns (bool);

    /// Provides an encoded bytes arary that represents values this lock wants to display on the info screen
    /// Info to decode these values is provided in the metadata file
    /// @param fnftId the fnftId that can map to a lock config stored in implementing contracts. Not recommended, as it will break on splitting
    /// @param lockId the lockId that maps to the lock config which should be updated. Recommended for retrieving references to lock configurations
    /// @dev used by the frontend to fetch on-chain data on the state of any given lock
    /// @return a bytes array that represents the result of calling abi.encode on values which the developer wants to appear on the frontend
    function getDisplayValues(uint fnftId, uint lockId) external view returns (bytes memory);

    /// Maps to a URL, typically IPFS-based, that contains information on how to encode and decode paramters sent to and from this lock
    /// Please see additional documentation for JSON config info
    /// @dev this method will be called by the frontend only but is crucial to properly implement for proper minting and information workflows
    /// @return a URL to the JSON file containing this lock's metadata schema
    function getMetadata() external view returns (string memory);

    /// Whether or not this lock will need updates and should display the option for them
    /// @dev this will be called by the frontend to determine if update inputs and buttons should be displayed
    /// @return whether or not the locks created by this contract will need updates
    function needsUpdate() external view returns (bool);
}

// File: contracts/utils/RevestAccessControl.sol



// SPDX-License-Identifier: GNU-GPL v3.0 or later

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/access/Ownable.sol";
import "../interfaces/IAddressRegistry.sol";
import "../interfaces/ILockManager.sol";
import "../interfaces/IRewardsHandler.sol";
import "../interfaces/ITokenVault.sol";
import "../interfaces/IRevestToken.sol";
import "../interfaces/IFNFTHandler.sol";
import "../lib/uniswap/IUniswapV2Factory.sol";
import "../interfaces/IInterestHandler.sol";


contract RevestAccessControl is Ownable {
    IAddressRegistry internal addressesProvider;
    address addressProvider;

    constructor(address provider) Ownable() {
        addressesProvider = IAddressRegistry(provider);
        addressProvider = provider;
    }

    modifier onlyRevest() {
        require(_msgSender() != address(0), "E004");
        require(
                _msgSender() == addressesProvider.getLockManager() ||
                _msgSender() == addressesProvider.getRewardsHandler() ||
                _msgSender() == addressesProvider.getTokenVault() ||
                _msgSender() == addressesProvider.getRevest() ||
                _msgSender() == addressesProvider.getRevestToken(),
            "E016"
        );
        _;
    }

    modifier onlyRevestController() {
        require(_msgSender() != address(0), "E004");
        require(_msgSender() == addressesProvider.getRevest(), "E017");
        _;
    }

    modifier onlyTokenVault() {
        require(_msgSender() != address(0), "E004");
        require(_msgSender() == addressesProvider.getTokenVault(), "E017");
        _;
    }

    function setAddressRegistry(address registry) external onlyOwner {
        addressesProvider = IAddressRegistry(registry);
    }

    function getAdmin() internal view returns (address) {
        return addressesProvider.getAdmin();
    }

    function getRevest() internal view returns (IRevest) {
        return IRevest(addressesProvider.getRevest());
    }

    function getRevestToken() internal view returns (IRevestToken) {
        return IRevestToken(addressesProvider.getRevestToken());
    }

    function getLockManager() internal view returns (ILockManager) {
        return ILockManager(addressesProvider.getLockManager());
    }

    function getTokenVault() internal view returns (ITokenVault) {
        return ITokenVault(addressesProvider.getTokenVault());
    }

    function getUniswapV2() internal view returns (IUniswapV2Factory) {
        return IUniswapV2Factory(addressesProvider.getDEX(0));
    }

    function getFNFTHandler() internal view returns (IFNFTHandler) {
        return IFNFTHandler(addressesProvider.getRevestFNFT());
    }

    function getRewardsHandler() internal view returns (IRewardsHandler) {
        return IRewardsHandler(addressesProvider.getRewardsHandler());
    }
}

// File: @openzeppelin/contracts/access/AccessControlEnumerable.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./AccessControl.sol";
import "../utils/structs/EnumerableSet.sol";

/**
 * @dev External interface of AccessControlEnumerable declared to support ERC165 detection.
 */
interface IAccessControlEnumerable {
    function getRoleMember(bytes32 role, uint256 index) external view returns (address);

    function getRoleMemberCount(bytes32 role) external view returns (uint256);
}

/**
 * @dev Extension of {AccessControl} that allows enumerating the members of each role.
 */
abstract contract AccessControlEnumerable is IAccessControlEnumerable, AccessControl {
    using EnumerableSet for EnumerableSet.AddressSet;

    mapping(bytes32 => EnumerableSet.AddressSet) private _roleMembers;

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

    /**
     * @dev Returns one of the accounts that have `role`. `index` must be a
     * value between 0 and {getRoleMemberCount}, non-inclusive.
     *
     * Role bearers are not sorted in any particular way, and their ordering may
     * change at any point.
     *
     * WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
     * you perform all queries on the same block. See the following
     * https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
     * for more information.
     */
    function getRoleMember(bytes32 role, uint256 index) public view override returns (address) {
        return _roleMembers[role].at(index);
    }

    /**
     * @dev Returns the number of accounts that have `role`. Can be used
     * together with {getRoleMember} to enumerate all bearers of a role.
     */
    function getRoleMemberCount(bytes32 role) public view override returns (uint256) {
        return _roleMembers[role].length();
    }

    /**
     * @dev Overload {grantRole} to track enumerable memberships
     */
    function grantRole(bytes32 role, address account) public virtual override {
        super.grantRole(role, account);
        _roleMembers[role].add(account);
    }

    /**
     * @dev Overload {revokeRole} to track enumerable memberships
     */
    function revokeRole(bytes32 role, address account) public virtual override {
        super.revokeRole(role, account);
        _roleMembers[role].remove(account);
    }

    /**
     * @dev Overload {renounceRole} to track enumerable memberships
     */
    function renounceRole(bytes32 role, address account) public virtual override {
        super.renounceRole(role, account);
        _roleMembers[role].remove(account);
    }

    /**
     * @dev Overload {_setupRole} to track enumerable memberships
     */
    function _setupRole(bytes32 role, address account) internal virtual override {
        super._setupRole(role, account);
        _roleMembers[role].add(account);
    }
}

// File: @openzeppelin/contracts/security/ReentrancyGuard.sol



// SPDX-License-Identifier: MIT

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 make 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;
    }
}

// File: contracts/interfaces/IRevestToken.sol



// SPDX-License-Identifier: GNU-GPL v3.0 or later

pragma solidity >=0.8.0;

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

interface IRevestToken is IERC20 {

}

// File: contracts/interfaces/IInterestHandler.sol



// SPDX-License-Identifier: GNU-GPL v3.0 or later

pragma solidity ^0.8.0;

interface IInterestHandler  {

    function registerDeposit(uint fnftId) external;

    function getPrincipal(uint fnftId) external view returns (uint);

    function getInterest(uint fnftId) external view returns (uint);

    function getAmountToWithdraw(uint fnftId) external view returns (uint);

    function getUnderlyingToken(uint fnftId) external view returns (address);

    function getUnderlyingValue(uint fnftId) external view returns (uint);

    //These methods exist for external operations
    function getPrincipalDetail(uint historic, uint amount, address asset) external view returns (uint);

    function getInterestDetail(uint historic, uint amount, address asset) external view returns (uint);

    function getUnderlyingTokenDetail(address asset) external view returns (address);

    function getInterestRate(address asset) external view returns (uint);

}

// File: @openzeppelin/contracts/access/AccessControl.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

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

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
    function hasRole(bytes32 role, address account) external view returns (bool);

    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    function grantRole(bytes32 role, address account) external;

    function revokeRole(bytes32 role, address account) external;

    function renounceRole(bytes32 role, address account) external;
}

/**
 * @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 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 {_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 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]{20}) is missing role (0x[0-9a-f]{32})$/
     *
     * _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]{20}) is missing role (0x[0-9a-f]{32})$/
     */
    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 granted `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}.
     * ====
     */
    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 {
        emit RoleAdminChanged(role, getRoleAdmin(role), adminRole);
        _roles[role].adminRole = adminRole;
    }

    function _grantRole(bytes32 role, address account) private {
        if (!hasRole(role, account)) {
            _roles[role].members[account] = true;
            emit RoleGranted(role, account, _msgSender());
        }
    }

    function _revokeRole(bytes32 role, address account) private {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }
}

// File: @openzeppelin/contracts/utils/structs/EnumerableSet.sol



// SPDX-License-Identifier: MIT

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];
    }

    // 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);
    }

    // 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))));
    }

    // 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));
    }
}

// File: @openzeppelin/contracts/utils/Strings.sol



// SPDX-License-Identifier: MIT

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);
    }
}