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// SPDX-License-Identifier: MIT
pragma solidity 0.8.12;

import {OwnableUpgradeable} from "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";

import {ILendingPool} from "../../interfaces/ILendingPool.sol";
import {IMultiFeeDistribution} from "../../interfaces/IMultiFeeDistribution.sol";
import {ChefIncentivesController} from "../staking/ChefIncentivesController.sol";
import {IPriceProvider} from "../../interfaces/IPriceProvider.sol";
import {IMiddleFeeDistribution} from "../../interfaces/IMiddleFeeDistribution.sol";
import {LockedBalance, Balances} from "../../interfaces/LockedBalance.sol";

/// @title Eligible Deposit Provider
/// @notice This contract is created to provide eligibility data for the users
/// including Riz.
/// @author Radiant Labs
contract EligibilityDataProvider is OwnableUpgradeable {
	/********************** Common Info ***********************/

	uint256 private constant _PRECISION = 10 ** 18;
	uint256 private constant _DECIMALS_8_PRECISION = 10 ** 8;

	/// @notice RATIO BASE equal to 100%
	uint256 public constant RATIO_DIVISOR = 10000;

	/// @notice Initial required ratio of TVL to get reward; in bips
	uint256 public constant INITIAL_REQUIRED_DEPOSIT_RATIO = 500;

	/// @notice Initial ratio of the required price to still allow without disqualification; in bips
	uint256 public constant INITIAL_PRICE_TOLERANCE_RATIO = 9000;

	/// @notice Minimum required ratio of TVL to get reward; in bips
	uint256 public constant MIN_PRICE_TOLERANCE_RATIO = 8000;

	/// @notice Address of Lending Pool
	ILendingPool public lendingPool;

	/// @notice Address of CIC
	ChefIncentivesController public chef;

	/// @notice Address of Middle fee distribution
	IMiddleFeeDistribution public middleFeeDistribution;

	/// @notice RDNT + LP price provider
	IPriceProvider public priceProvider;

	/// @notice Required ratio of TVL to get reward; in bips
	uint256 public requiredDepositRatio;

	/// @notice Ratio of the required price to still allow without disqualification; in bips
	uint256 public priceToleranceRatio;

	/// @notice RDNT-ETH LP token
	address public lpToken;

	/********************** Eligible info ***********************/

	/// @notice Last eligible status of the user
	mapping(address => bool) public lastEligibleStatus;

	/// @notice Disqualified time of the user
	mapping(address => uint256) public disqualifiedTime;

	/// @notice Legacy Mapping - DO NOT REMOVE!
	mapping(address => uint256) private obsoleteMapping1; // WAS: `eligibleDeposits`
	/// @notice Legacy Mapping - DO NOT REMOVE!
	mapping(address => mapping(address => uint256)) public obsoleteMapping2; // WAS: `userDeposits`

	/// @notice Addresses of lending pool to be considered in `requiredUsdValue(user)` calculation
	ILendingPool[] internal _eligibleRizLendingPools;

	/********************** Events ***********************/

	/// @notice Emitted when CIC is set
	event ChefIncentivesControllerUpdated(ChefIncentivesController indexed _chef);

	/// @notice Emitted when LP token is set
	event LPTokenUpdated(address indexed _lpToken);

	/// @notice Emitted when required TVL ratio is updated
	event RequiredDepositRatioUpdated(uint256 indexed requiredDepositRatio);

	/// @notice Emitted when price tolerance ratio is updated
	event PriceToleranceRatioUpdated(uint256 indexed priceToleranceRatio);

	/// @notice Emitted when DQ time is set
	event DqTimeUpdated(address indexed _user, uint256 _time);

	/// @notice Emitted when eligible lending pools are updated
	event EligibleRizLendingPoolsUpdated(ILendingPool[] eligibleRizLendingPools);

	/********************** Errors ***********************/
	error AddressZero();

	error LPTokenSet();

	error InvalidRatio();

	error OnlyCIC();

	error MissingEligibleLendingPools();

	constructor() {
		_disableInitializers();
	}

	/**
	 * @notice Constructor
	 * @param _lendingPool Address of lending pool.
	 * @param _middleFeeDistribution MiddleFeeDistribution address.
	 * @param _priceProvider PriceProvider address.
	 */
	function initialize(
		ILendingPool _lendingPool,
		IMiddleFeeDistribution _middleFeeDistribution,
		IPriceProvider _priceProvider
	) public initializer {
		if (address(_lendingPool) == address(0)) revert AddressZero();
		if (address(_middleFeeDistribution) == address(0)) revert AddressZero();
		if (address(_priceProvider) == address(0)) revert AddressZero();

		lendingPool = _lendingPool;
		middleFeeDistribution = _middleFeeDistribution;
		priceProvider = _priceProvider;
		requiredDepositRatio = INITIAL_REQUIRED_DEPOSIT_RATIO;
		priceToleranceRatio = INITIAL_PRICE_TOLERANCE_RATIO;
		__Ownable_init();
	}

	/********************** Setters ***********************/

	/**
	 * @notice Set CIC
	 * @param _chef address.
	 */
	function setChefIncentivesController(ChefIncentivesController _chef) external onlyOwner {
		if (address(_chef) == address(0)) revert AddressZero();
		chef = _chef;
		emit ChefIncentivesControllerUpdated(_chef);
	}

	/**
	 * @notice Set LP token
	 */
	function setLPToken(address _lpToken) external onlyOwner {
		if (_lpToken == address(0)) revert AddressZero();
		if (lpToken != address(0)) revert LPTokenSet();
		lpToken = _lpToken;

		emit LPTokenUpdated(_lpToken);
	}

	/**
	 * @notice Sets required tvl ratio. Can only be called by the owner.
	 * @param _requiredDepositRatio Ratio in bips.
	 */
	function setRequiredDepositRatio(uint256 _requiredDepositRatio) external onlyOwner {
		if (_requiredDepositRatio > RATIO_DIVISOR) revert InvalidRatio();
		requiredDepositRatio = _requiredDepositRatio;

		emit RequiredDepositRatioUpdated(_requiredDepositRatio);
	}

	/**
	 * @notice Sets price tolerance ratio. Can only be called by the owner.
	 * @param _priceToleranceRatio Ratio in bips.
	 */
	function setPriceToleranceRatio(uint256 _priceToleranceRatio) external onlyOwner {
		if (_priceToleranceRatio < MIN_PRICE_TOLERANCE_RATIO || _priceToleranceRatio > RATIO_DIVISOR)
			revert InvalidRatio();
		priceToleranceRatio = _priceToleranceRatio;

		emit PriceToleranceRatioUpdated(_priceToleranceRatio);
	}

	/**
	 * @notice Sets DQ time of the user
	 * @dev Only callable by CIC
	 * @param _user's address
	 * @param _time for DQ
	 */
	function setDqTime(address _user, uint256 _time) external {
		if (msg.sender != address(chef)) revert OnlyCIC();
		disqualifiedTime[_user] = _time;

		emit DqTimeUpdated(_user, _time);
	}

	/**
	 * @notice Sets eligible lending pools that should be considered in `requiredUsdValue(user)` calculation
	 * @param pools Array of eligible lending pools
	 */
	function setEligibleRizLendingPools(ILendingPool[] calldata pools) external onlyOwner {
		uint256 len = pools.length;
		if (len == 0) revert MissingEligibleLendingPools();
		for (uint i = 0; i < len; i++) {
			if (address(pools[i]) == address(0)) revert AddressZero();
		}

		delete _eligibleRizLendingPools;

		_eligibleRizLendingPools = pools;
		emit EligibleRizLendingPoolsUpdated(_eligibleRizLendingPools);
	}

	/********************** View functions ***********************/

	/**
	 * @notice Returns eligible lending pools
	 */
	function getEligibleRizLendingPools() external view returns (ILendingPool[] memory) {
		return _eligibleRizLendingPools;
	}

	/**
	 * @notice Returns locked RDNT and LP token value in eth
	 * @param user's address
	 */
	function lockedUsdValue(address user) public view returns (uint256) {
		IMultiFeeDistribution multiFeeDistribution = IMultiFeeDistribution(
			middleFeeDistribution.getMultiFeeDistributionAddress()
		);
		Balances memory _balances = multiFeeDistribution.getBalances(user);
		return _lockedUsdValue(_balances.locked);
	}

	/**
	 * @notice Returns USD value required to be locked
	 * @param user's address
	 * @return required USD value in 8 decimal precision.
	 */
	function requiredUsdValue(address user) public view returns (uint256 required) {
		// Core lending pool associated priceOracle returns USD value in 8 decimals
		(uint256 sumTotalCollateralUSD, , , , , ) = lendingPool.getUserAccountData(user);

		uint256 len = _eligibleRizLendingPools.length;
		if (len > 0) {
			for (uint i = 0; i < len; ) {
				// Riz lending pool associated priceOracle returns USD value in 18 decimals
				(uint256 collateralUSD18Decimals, , , , , ) = _eligibleRizLendingPools[i].getUserAccountData(user);
				uint256 collateralUSD = (collateralUSD18Decimals * _DECIMALS_8_PRECISION) / _PRECISION;
				sumTotalCollateralUSD += collateralUSD;
				unchecked {
					++i;
				}
			}
		}

		required = (sumTotalCollateralUSD * requiredDepositRatio) / RATIO_DIVISOR;
	}

	/**
	 * @notice Returns if the user is eligible to receive rewards
	 * @param _user's address
	 */
	function isEligibleForRewards(address _user) public view returns (bool) {
		uint256 lockedValue = lockedUsdValue(_user);
		uint256 requiredValue = (requiredUsdValue(_user) * priceToleranceRatio) / RATIO_DIVISOR;
		return requiredValue != 0 && lockedValue >= requiredValue;
	}

	/**
	 * @notice Returns DQ time of the user
	 * @param _user's address
	 */
	function getDqTime(address _user) public view returns (uint256) {
		return disqualifiedTime[_user];
	}

	/**
	 * @notice Returns last eligible time of the user
	 * @dev If user is still eligible, it will return future time
	 *  CAUTION: this function only works perfect when the array
	 *  is ordered by lock time. This is assured when _stake happens.
	 * @param user's address
	 * @return lastEligibleTimestamp of the user. Returns 0 if user is not eligible.
	 */
	function lastEligibleTime(address user) public view returns (uint256 lastEligibleTimestamp) {
		if (!isEligibleForRewards(user)) {
			return 0;
		}

		uint256 requiredValue = requiredUsdValue(user);

		IMultiFeeDistribution multiFeeDistribution = IMultiFeeDistribution(
			middleFeeDistribution.getMultiFeeDistributionAddress()
		);
		LockedBalance[] memory lpLockData = multiFeeDistribution.lockInfo(user);

		uint256 lockedLP;
		for (uint256 i = lpLockData.length; i > 0; ) {
			LockedBalance memory currentLockData = lpLockData[i - 1];
			lockedLP += currentLockData.amount;

			if (_lockedUsdValue(lockedLP) >= requiredValue) {
				return currentLockData.unlockTime;
			}
			unchecked {
				i--;
			}
		}
	}

	/********************** Operate functions ***********************/
	/**
	 * @notice Refresh token amount for eligibility
	 * @param user The address of the user
	 * @return currentEligibility The current eligibility status of the user
	 */
	function refresh(address user) external returns (bool currentEligibility) {
		if (msg.sender != address(chef)) revert OnlyCIC();
		if (user == address(0)) revert AddressZero();

		updatePrice();
		currentEligibility = isEligibleForRewards(user);
		if (currentEligibility && disqualifiedTime[user] != 0) {
			disqualifiedTime[user] = 0;
		}
		lastEligibleStatus[user] = currentEligibility;
	}

	/**
	 * @notice Update token price
	 */
	function updatePrice() public {
		priceProvider.update();
	}

	/********************** Internal functions ***********************/

	/**
	 * @notice Returns locked RDNT and LP token value in USD
	 * @param lockedLP is locked lp amount
	 */
	function _lockedUsdValue(uint256 lockedLP) internal view returns (uint256) {
		uint256 lpPrice = priceProvider.getLpTokenPriceUsd();
		return (lockedLP * lpPrice) / 10 ** 18;
	}
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/ContextUpgradeable.sol";
import "../proxy/utils/Initializable.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 OwnableUpgradeable is Initializable, ContextUpgradeable {
    address private _owner;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    function __Ownable_init() internal onlyInitializing {
        __Ownable_init_unchained();
    }

    function __Ownable_init_unchained() internal onlyInitializing {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

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

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

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

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

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

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;
}

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

pragma solidity ^0.8.2;

import "../../utils/AddressUpgradeable.sol";

/**
 * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
 * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
 * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
 * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
 *
 * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
 * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
 * case an upgrade adds a module that needs to be initialized.
 *
 * For example:
 *
 * [.hljs-theme-light.nopadding]
 * ```solidity
 * contract MyToken is ERC20Upgradeable {
 *     function initialize() initializer public {
 *         __ERC20_init("MyToken", "MTK");
 *     }
 * }
 *
 * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
 *     function initializeV2() reinitializer(2) public {
 *         __ERC20Permit_init("MyToken");
 *     }
 * }
 * ```
 *
 * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
 * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
 *
 * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
 * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
 *
 * [CAUTION]
 * ====
 * Avoid leaving a contract uninitialized.
 *
 * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
 * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
 * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
 *
 * [.hljs-theme-light.nopadding]
 * ```
 * /// @custom:oz-upgrades-unsafe-allow constructor
 * constructor() {
 *     _disableInitializers();
 * }
 * ```
 * ====
 */
abstract contract Initializable {
    /**
     * @dev Indicates that the contract has been initialized.
     * @custom:oz-retyped-from bool
     */
    uint8 private _initialized;

    /**
     * @dev Indicates that the contract is in the process of being initialized.
     */
    bool private _initializing;

    /**
     * @dev Triggered when the contract has been initialized or reinitialized.
     */
    event Initialized(uint8 version);

    /**
     * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
     * `onlyInitializing` functions can be used to initialize parent contracts.
     *
     * Similar to `reinitializer(1)`, except that functions marked with `initializer` can be nested in the context of a
     * constructor.
     *
     * Emits an {Initialized} event.
     */
    modifier initializer() {
        bool isTopLevelCall = !_initializing;
        require(
            (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
            "Initializable: contract is already initialized"
        );
        _initialized = 1;
        if (isTopLevelCall) {
            _initializing = true;
        }
        _;
        if (isTopLevelCall) {
            _initializing = false;
            emit Initialized(1);
        }
    }

    /**
     * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
     * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
     * used to initialize parent contracts.
     *
     * A reinitializer may be used after the original initialization step. This is essential to configure modules that
     * are added through upgrades and that require initialization.
     *
     * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
     * cannot be nested. If one is invoked in the context of another, execution will revert.
     *
     * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
     * a contract, executing them in the right order is up to the developer or operator.
     *
     * WARNING: setting the version to 255 will prevent any future reinitialization.
     *
     * Emits an {Initialized} event.
     */
    modifier reinitializer(uint8 version) {
        require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
        _initialized = version;
        _initializing = true;
        _;
        _initializing = false;
        emit Initialized(version);
    }

    /**
     * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
     * {initializer} and {reinitializer} modifiers, directly or indirectly.
     */
    modifier onlyInitializing() {
        require(_initializing, "Initializable: contract is not initializing");
        _;
    }

    /**
     * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
     * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
     * to any version. It is recommended to use this to lock implementation contracts that are designed to be called
     * through proxies.
     *
     * Emits an {Initialized} event the first time it is successfully executed.
     */
    function _disableInitializers() internal virtual {
        require(!_initializing, "Initializable: contract is initializing");
        if (_initialized != type(uint8).max) {
            _initialized = type(uint8).max;
            emit Initialized(type(uint8).max);
        }
    }

    /**
     * @dev Returns the highest version that has been initialized. See {reinitializer}.
     */
    function _getInitializedVersion() internal view returns (uint8) {
        return _initialized;
    }

    /**
     * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.
     */
    function _isInitializing() internal view returns (bool) {
        return _initializing;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol)

pragma solidity ^0.8.0;

import "../utils/ContextUpgradeable.sol";
import "../proxy/utils/Initializable.sol";

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

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

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    function __Pausable_init() internal onlyInitializing {
        __Pausable_init_unchained();
    }

    function __Pausable_init_unchained() internal onlyInitializing {
        _paused = false;
    }

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

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        _requirePaused();
        _;
    }

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

    /**
     * @dev Throws if the contract is paused.
     */
    function _requireNotPaused() internal view virtual {
        require(!paused(), "Pausable: paused");
    }

    /**
     * @dev Throws if the contract is not paused.
     */
    function _requirePaused() internal view virtual {
        require(paused(), "Pausable: not paused");
    }

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

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

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[49] private __gap;
}

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

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library AddressUpgradeable {
    /**
     * @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
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 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://consensys.net/diligence/blog/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/v0.8.0/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 functionCallWithValue(target, data, 0, "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");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // 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
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

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

pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";

/**
 * @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 ContextUpgradeable is Initializable {
    function __Context_init() internal onlyInitializing {
    }

    function __Context_init_unchained() internal onlyInitializing {
    }
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

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

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[50] private __gap;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

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

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

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

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

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

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

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

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

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/IERC20Permit.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;

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    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));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    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");
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
     * Revert on invalid signature.
     */
    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @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");
        require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
    }

    /**
     * @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).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        // 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 cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

        (bool success, bytes memory returndata) = address(token).call(data);
        return
            success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token));
    }
}

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

pragma solidity ^0.8.1;

/**
 * @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
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 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://consensys.net/diligence/blog/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/v0.8.0/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 functionCallWithValue(target, data, 0, "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");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, 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) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // 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
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.8.12;
pragma experimental ABIEncoderV2;

interface IEligibilityDataProvider {
	function refresh(address user) external returns (bool currentEligibility);

	function updatePrice() external;

	function requiredEthValue(address user) external view returns (uint256 required);

	function isEligibleForRewards(address _user) external view returns (bool isEligible);

	function lastEligibleTime(address user) external view returns (uint256 lastEligibleTimestamp);

	function lockedUsdValue(address user) external view returns (uint256);

	function requiredUsdValue(address user) external view returns (uint256 required);

	function lastEligibleStatus(address user) external view returns (bool);

	function rewardEligibleAmount(address token) external view returns (uint256);

	function setDqTime(address _user, uint256 _time) external;

	function getDqTime(address _user) external view returns (uint256);

	function autoprune() external returns (uint256 processed);

	function requiredDepositRatio() external view returns (uint256);

	function RATIO_DIVISOR() external view returns (uint256);
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.12;

import "./LockedBalance.sol";

interface IFeeDistribution {
	struct RewardData {
		address token;
		uint256 amount;
	}

	function addReward(address rewardsToken) external;

	function removeReward(address _rewardToken) external;
}

// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.8.12;
pragma experimental ABIEncoderV2;

import {ILendingPoolAddressesProvider} from "./ILendingPoolAddressesProvider.sol";
import {DataTypes} from "../lending/libraries/types/DataTypes.sol";

interface ILendingPool {
	/**
	 * @dev Emitted on deposit()
	 * @param reserve The address of the underlying asset of the reserve
	 * @param user The address initiating the deposit
	 * @param onBehalfOf The beneficiary of the deposit, receiving the aTokens
	 * @param amount The amount deposited
	 * @param referral The referral code used
	 **/
	event Deposit(
		address indexed reserve,
		address user,
		address indexed onBehalfOf,
		uint256 amount,
		uint16 indexed referral
	);

	/**
	 * @dev Emitted on withdraw()
	 * @param reserve The address of the underlyng asset being withdrawn
	 * @param user The address initiating the withdrawal, owner of aTokens
	 * @param to Address that will receive the underlying
	 * @param amount The amount to be withdrawn
	 **/
	event Withdraw(address indexed reserve, address indexed user, address indexed to, uint256 amount);

	/**
	 * @dev Emitted on borrow() and flashLoan() when debt needs to be opened
	 * @param reserve The address of the underlying asset being borrowed
	 * @param user The address of the user initiating the borrow(), receiving the funds on borrow() or just
	 * initiator of the transaction on flashLoan()
	 * @param onBehalfOf The address that will be getting the debt
	 * @param amount The amount borrowed out
	 * @param borrowRateMode The rate mode: 1 for Stable, 2 for Variable
	 * @param borrowRate The numeric rate at which the user has borrowed
	 * @param referral The referral code used
	 **/
	event Borrow(
		address indexed reserve,
		address user,
		address indexed onBehalfOf,
		uint256 amount,
		uint256 borrowRateMode,
		uint256 borrowRate,
		uint16 indexed referral
	);

	/**
	 * @dev Emitted on repay()
	 * @param reserve The address of the underlying asset of the reserve
	 * @param user The beneficiary of the repayment, getting his debt reduced
	 * @param repayer The address of the user initiating the repay(), providing the funds
	 * @param amount The amount repaid
	 **/
	event Repay(address indexed reserve, address indexed user, address indexed repayer, uint256 amount);

	/**
	 * @dev Emitted on swapBorrowRateMode()
	 * @param reserve The address of the underlying asset of the reserve
	 * @param user The address of the user swapping his rate mode
	 * @param rateMode The rate mode that the user wants to swap to
	 **/
	event Swap(address indexed reserve, address indexed user, uint256 rateMode);

	/**
	 * @dev Emitted on setUserUseReserveAsCollateral()
	 * @param reserve The address of the underlying asset of the reserve
	 * @param user The address of the user enabling the usage as collateral
	 **/
	event ReserveUsedAsCollateralEnabled(address indexed reserve, address indexed user);

	/**
	 * @dev Emitted on setUserUseReserveAsCollateral()
	 * @param reserve The address of the underlying asset of the reserve
	 * @param user The address of the user enabling the usage as collateral
	 **/
	event ReserveUsedAsCollateralDisabled(address indexed reserve, address indexed user);

	/**
	 * @dev Emitted on rebalanceStableBorrowRate()
	 * @param reserve The address of the underlying asset of the reserve
	 * @param user The address of the user for which the rebalance has been executed
	 **/
	event RebalanceStableBorrowRate(address indexed reserve, address indexed user);

	/**
	 * @dev Emitted on flashLoan()
	 * @param target The address of the flash loan receiver contract
	 * @param initiator The address initiating the flash loan
	 * @param asset The address of the asset being flash borrowed
	 * @param amount The amount flash borrowed
	 * @param premium The fee flash borrowed
	 * @param referralCode The referral code used
	 **/
	event FlashLoan(
		address indexed target,
		address indexed initiator,
		address indexed asset,
		uint256 amount,
		uint256 premium,
		uint16 referralCode
	);

	/**
	 * @dev Emitted when the pause is triggered.
	 */
	event Paused();

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

	/**
	 * @dev Emitted when a borrower is liquidated. This event is emitted by the LendingPool via
	 * LendingPoolCollateral manager using a DELEGATECALL
	 * This allows to have the events in the generated ABI for LendingPool.
	 * @param collateralAsset The address of the underlying asset used as collateral, to receive as result of the liquidation
	 * @param debtAsset The address of the underlying borrowed asset to be repaid with the liquidation
	 * @param user The address of the borrower getting liquidated
	 * @param debtToCover The debt amount of borrowed `asset` the liquidator wants to cover
	 * @param liquidatedCollateralAmount The amount of collateral received by the liiquidator
	 * @param liquidator The address of the liquidator
	 * @param receiveAToken `true` if the liquidators wants to receive the collateral aTokens, `false` if he wants
	 * to receive the underlying collateral asset directly
	 **/
	event LiquidationCall(
		address indexed collateralAsset,
		address indexed debtAsset,
		address indexed user,
		uint256 debtToCover,
		uint256 liquidatedCollateralAmount,
		address liquidator,
		bool receiveAToken
	);

	/**
	 * @dev Emitted when the state of a reserve is updated. NOTE: This event is actually declared
	 * in the ReserveLogic library and emitted in the updateInterestRates() function. Since the function is internal,
	 * the event will actually be fired by the LendingPool contract. The event is therefore replicated here so it
	 * gets added to the LendingPool ABI
	 * @param reserve The address of the underlying asset of the reserve
	 * @param liquidityRate The new liquidity rate
	 * @param stableBorrowRate The new stable borrow rate
	 * @param variableBorrowRate The new variable borrow rate
	 * @param liquidityIndex The new liquidity index
	 * @param variableBorrowIndex The new variable borrow index
	 **/
	event ReserveDataUpdated(
		address indexed reserve,
		uint256 liquidityRate,
		uint256 stableBorrowRate,
		uint256 variableBorrowRate,
		uint256 liquidityIndex,
		uint256 variableBorrowIndex
	);

	function initialize(ILendingPoolAddressesProvider provider) external;

	/**
	 * @dev Deposits an `amount` of underlying asset into the reserve, receiving in return overlying aTokens.
	 * - E.g. User deposits 100 USDC and gets in return 100 aUSDC
	 * @param asset The address of the underlying asset to deposit
	 * @param amount The amount to be deposited
	 * @param onBehalfOf The address that will receive the aTokens, same as msg.sender if the user
	 *   wants to receive them on his own wallet, or a different address if the beneficiary of aTokens
	 *   is a different wallet
	 * @param referralCode Code used to register the integrator originating the operation, for potential rewards.
	 *   0 if the action is executed directly by the user, without any middle-man
	 **/
	function deposit(address asset, uint256 amount, address onBehalfOf, uint16 referralCode) external;

	function depositWithAutoDLP(address asset, uint256 amount, address onBehalfOf, uint16 referralCode) external;

	/**
	 * @dev Withdraws an `amount` of underlying asset from the reserve, burning the equivalent aTokens owned
	 * E.g. User has 100 aUSDC, calls withdraw() and receives 100 USDC, burning the 100 aUSDC
	 * @param asset The address of the underlying asset to withdraw
	 * @param amount The underlying amount to be withdrawn
	 *   - Send the value type(uint256).max in order to withdraw the whole aToken balance
	 * @param to Address that will receive the underlying, same as msg.sender if the user
	 *   wants to receive it on his own wallet, or a different address if the beneficiary is a
	 *   different wallet
	 * @return The final amount withdrawn
	 **/
	function withdraw(address asset, uint256 amount, address to) external returns (uint256);

	/**
	 * @dev Allows users to borrow a specific `amount` of the reserve underlying asset, provided that the borrower
	 * already deposited enough collateral, or he was given enough allowance by a credit delegator on the
	 * corresponding debt token (StableDebtToken or VariableDebtToken)
	 * - E.g. User borrows 100 USDC passing as `onBehalfOf` his own address, receiving the 100 USDC in his wallet
	 *   and 100 stable/variable debt tokens, depending on the `interestRateMode`
	 * @param asset The address of the underlying asset to borrow
	 * @param amount The amount to be borrowed
	 * @param interestRateMode The interest rate mode at which the user wants to borrow: 1 for Stable, 2 for Variable
	 * @param referralCode Code used to register the integrator originating the operation, for potential rewards.
	 *   0 if the action is executed directly by the user, without any middle-man
	 * @param onBehalfOf Address of the user who will receive the debt. Should be the address of the borrower itself
	 * calling the function if he wants to borrow against his own collateral, or the address of the credit delegator
	 * if he has been given credit delegation allowance
	 **/
	function borrow(
		address asset,
		uint256 amount,
		uint256 interestRateMode,
		uint16 referralCode,
		address onBehalfOf
	) external;

	/**
	 * @notice Repays a borrowed `amount` on a specific reserve, burning the equivalent debt tokens owned
	 * - E.g. User repays 100 USDC, burning 100 variable/stable debt tokens of the `onBehalfOf` address
	 * @param asset The address of the borrowed underlying asset previously borrowed
	 * @param amount The amount to repay
	 * - Send the value type(uint256).max in order to repay the whole debt for `asset` on the specific `debtMode`
	 * @param rateMode The interest rate mode at of the debt the user wants to repay: 1 for Stable, 2 for Variable
	 * @param onBehalfOf Address of the user who will get his debt reduced/removed. Should be the address of the
	 * user calling the function if he wants to reduce/remove his own debt, or the address of any other
	 * other borrower whose debt should be removed
	 * @return The final amount repaid
	 **/
	function repay(address asset, uint256 amount, uint256 rateMode, address onBehalfOf) external returns (uint256);

	/**
	 * @dev Allows a borrower to swap his debt between stable and variable mode, or viceversa
	 * @param asset The address of the underlying asset borrowed
	 * @param rateMode The rate mode that the user wants to swap to
	 **/
	function swapBorrowRateMode(address asset, uint256 rateMode) external;

	/**
	 * @dev Rebalances the stable interest rate of a user to the current stable rate defined on the reserve.
	 * - Users can be rebalanced if the following conditions are satisfied:
	 *     1. Usage ratio is above 95%
	 *     2. the current deposit APY is below REBALANCE_UP_THRESHOLD * maxVariableBorrowRate, which means that too much has been
	 *        borrowed at a stable rate and depositors are not earning enough
	 * @param asset The address of the underlying asset borrowed
	 * @param user The address of the user to be rebalanced
	 **/
	function rebalanceStableBorrowRate(address asset, address user) external;

	/**
	 * @dev Allows depositors to enable/disable a specific deposited asset as collateral
	 * @param asset The address of the underlying asset deposited
	 * @param useAsCollateral `true` if the user wants to use the deposit as collateral, `false` otherwise
	 **/
	function setUserUseReserveAsCollateral(address asset, bool useAsCollateral) external;

	/**
	 * @dev Function to liquidate a non-healthy position collateral-wise, with Health Factor below 1
	 * - The caller (liquidator) covers `debtToCover` amount of debt of the user getting liquidated, and receives
	 *   a proportionally amount of the `collateralAsset` plus a bonus to cover market risk
	 * @param collateralAsset The address of the underlying asset used as collateral, to receive as result of the liquidation
	 * @param debtAsset The address of the underlying borrowed asset to be repaid with the liquidation
	 * @param user The address of the borrower getting liquidated
	 * @param debtToCover The debt amount of borrowed `asset` the liquidator wants to cover
	 * @param receiveAToken `true` if the liquidators wants to receive the collateral aTokens, `false` if he wants
	 * to receive the underlying collateral asset directly
	 **/
	function liquidationCall(
		address collateralAsset,
		address debtAsset,
		address user,
		uint256 debtToCover,
		bool receiveAToken
	) external;

	/**
	 * @dev Allows smartcontracts to access the liquidity of the pool within one transaction,
	 * as long as the amount taken plus a fee is returned.
	 * IMPORTANT There are security concerns for developers of flashloan receiver contracts that must be kept into consideration.
	 * For further details please visit https://developers.aave.com
	 * @param receiverAddress The address of the contract receiving the funds, implementing the IFlashLoanReceiver interface
	 * @param assets The addresses of the assets being flash-borrowed
	 * @param amounts The amounts amounts being flash-borrowed
	 * @param modes Types of the debt to open if the flash loan is not returned:
	 *   0 -> Don't open any debt, just revert if funds can't be transferred from the receiver
	 *   1 -> Open debt at stable rate for the value of the amount flash-borrowed to the `onBehalfOf` address
	 *   2 -> Open debt at variable rate for the value of the amount flash-borrowed to the `onBehalfOf` address
	 * @param onBehalfOf The address  that will receive the debt in the case of using on `modes` 1 or 2
	 * @param params Variadic packed params to pass to the receiver as extra information
	 * @param referralCode Code used to register the integrator originating the operation, for potential rewards.
	 *   0 if the action is executed directly by the user, without any middle-man
	 **/
	function flashLoan(
		address receiverAddress,
		address[] calldata assets,
		uint256[] calldata amounts,
		uint256[] calldata modes,
		address onBehalfOf,
		bytes calldata params,
		uint16 referralCode
	) external;

	/**
	 * @dev Returns the user account data across all the reserves
	 * @param user The address of the user
	 * @return totalCollateral the total collateral in USD to 8 decimals of the user
	 * @return totalDebt the total debt in USD to 8 decimals of the user
	 * @return availableBorrows the borrowing power left of the user
	 * @return currentLiquidationThreshold the liquidation threshold of the user
	 * @return ltv the loan to value of the user
	 * @return healthFactor the current health factor of the user
	 **/
	function getUserAccountData(
		address user
	)
		external
		view
		returns (
			uint256 totalCollateral,
			uint256 totalDebt,
			uint256 availableBorrows,
			uint256 currentLiquidationThreshold,
			uint256 ltv,
			uint256 healthFactor
		);

	function initReserve(
		address reserve,
		address aTokenAddress,
		address stableDebtAddress,
		address variableDebtAddress,
		address interestRateStrategyAddress
	) external;

	function setReserveInterestRateStrategyAddress(address reserve, address rateStrategyAddress) external;

	function setConfiguration(address reserve, uint256 configuration) external;

	/**
	 * @dev Returns the configuration of the reserve
	 * @param asset The address of the underlying asset of the reserve
	 * @return The configuration of the reserve
	 **/
	function getConfiguration(address asset) external view returns (DataTypes.ReserveConfigurationMap memory);

	/**
	 * @dev Returns the configuration of the user across all the reserves
	 * @param user The user address
	 * @return The configuration of the user
	 **/
	function getUserConfiguration(address user) external view returns (DataTypes.UserConfigurationMap memory);

	/**
	 * @dev Returns the normalized income normalized income of the reserve
	 * @param asset The address of the underlying asset of the reserve
	 * @return The reserve's normalized income
	 */
	function getReserveNormalizedIncome(address asset) external view returns (uint256);

	/**
	 * @dev Returns the normalized variable debt per unit of asset
	 * @param asset The address of the underlying asset of the reserve
	 * @return The reserve normalized variable debt
	 */
	function getReserveNormalizedVariableDebt(address asset) external view returns (uint256);

	/**
	 * @dev Returns the state and configuration of the reserve
	 * @param asset The address of the underlying asset of the reserve
	 * @return The state of the reserve
	 **/
	function getReserveData(address asset) external view returns (DataTypes.ReserveData memory);

	function finalizeTransfer(
		address asset,
		address from,
		address to,
		uint256 amount,
		uint256 balanceFromAfter,
		uint256 balanceToBefore
	) external;

	function getReservesList() external view returns (address[] memory);

	function getAddressesProvider() external view returns (ILendingPoolAddressesProvider);

	function setPause(bool val) external;

	function paused() external view returns (bool);
}

// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.8.12;

/**
 * @title LendingPoolAddressesProvider contract
 * @dev Main registry of addresses part of or connected to the protocol, including permissioned roles
 * - Acting also as factory of proxies and admin of those, so with right to change its implementations
 * - Owned by the Aave Governance
 * @author Aave
 **/
interface ILendingPoolAddressesProvider {
	event MarketIdSet(string newMarketId);
	event LendingPoolUpdated(address indexed newAddress);
	event ConfigurationAdminUpdated(address indexed newAddress);
	event EmergencyAdminUpdated(address indexed newAddress);
	event LendingPoolConfiguratorUpdated(address indexed newAddress);
	event LendingPoolCollateralManagerUpdated(address indexed newAddress);
	event PriceOracleUpdated(address indexed newAddress);
	event LendingRateOracleUpdated(address indexed newAddress);
	event ProxyCreated(bytes32 id, address indexed newAddress);
	event AddressSet(bytes32 id, address indexed newAddress, bool hasProxy);

	function getMarketId() external view returns (string memory);

	function setMarketId(string calldata marketId) external;

	function setAddress(bytes32 id, address newAddress) external;

	function setAddressAsProxy(bytes32 id, address impl) external;

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

	function getLendingPool() external view returns (address);

	function setLendingPoolImpl(address pool) external;

	function getLendingPoolConfigurator() external view returns (address);

	function setLendingPoolConfiguratorImpl(address configurator) external;

	function getLendingPoolCollateralManager() external view returns (address);

	function setLendingPoolCollateralManager(address manager) external;

	function getPoolAdmin() external view returns (address);

	function setPoolAdmin(address admin) external;

	function getEmergencyAdmin() external view returns (address);

	function setEmergencyAdmin(address admin) external;

	function getPriceOracle() external view returns (address);

	function setPriceOracle(address priceOracle) external;

	function getLendingRateOracle() external view returns (address);

	function setLendingRateOracle(address lendingRateOracle) external;

	function getLiquidationFeeTo() external view returns (address);

	function setLiquidationFeeTo(address liquidationFeeTo) external;
}

// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.8.12;
pragma experimental ABIEncoderV2;

interface ILeverager {
	function wethToZap(address user) external view returns (uint256);

	function zapWETHWithBorrow(uint256 amount, address borrower) external returns (uint256 liquidity);
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.12;

import "./LockedBalance.sol";
import {IFeeDistribution} from "./IMultiFeeDistribution.sol";

interface IMiddleFeeDistribution is IFeeDistribution {
	function forwardReward(address[] memory _rewardTokens) external;

	function getRdntTokenAddress() external view returns (address);

	function getMultiFeeDistributionAddress() external view returns (address);

	function operationExpenseRatio() external view returns (uint256);

	function operationExpenses() external view returns (address);

	function isRewardToken(address) external view returns (bool);
}

// SPDX-License-Identifier: agpl-3.0

pragma solidity 0.8.12;

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

interface IMintableToken is IERC20 {
	function mint(address _receiver, uint256 _amount) external returns (bool);

	function burn(uint256 _amount) external returns (bool);

	function setMinter(address _minter) external returns (bool);
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.12;

import "./LockedBalance.sol";
import "./IFeeDistribution.sol";
import "./IMintableToken.sol";

interface IMultiFeeDistribution is IFeeDistribution {
	function exit(bool claimRewards) external;

	function stake(uint256 amount, address onBehalfOf, uint256 typeIndex) external;

	function rdntToken() external view returns (IMintableToken);

	function getPriceProvider() external view returns (address);

	function lockInfo(address user) external view returns (LockedBalance[] memory);

	function autocompoundDisabled(address user) external view returns (bool);

	function defaultLockIndex(address _user) external view returns (uint256);

	function autoRelockDisabled(address user) external view returns (bool);

	function totalBalance(address user) external view returns (uint256);

	function lockedBalance(address user) external view returns (uint256);

	function lockedBalances(
		address user
	) external view returns (uint256, uint256, uint256, uint256, LockedBalance[] memory);

	function getBalances(address _user) external view returns (Balances memory);

	function zapVestingToLp(address _address) external returns (uint256);

	function claimableRewards(address account) external view returns (IFeeDistribution.RewardData[] memory rewards);

	function setDefaultRelockTypeIndex(uint256 _index) external;

	function daoTreasury() external view returns (address);

	function stakingToken() external view returns (address);

	function userSlippage(address) external view returns (uint256);

	function claimFromConverter(address) external;

	function vestTokens(address user, uint256 amount, bool withPenalty) external;
}

interface IMFDPlus is IMultiFeeDistribution {
	function getLastClaimTime(address _user) external returns (uint256);

	function claimBounty(address _user, bool _execute) external returns (bool issueBaseBounty);

	function claimCompound(address _user, bool _execute, uint256 _slippage) external returns (uint256 bountyAmt);

	function setAutocompound(bool state, uint256 slippage) external;

	function setUserSlippage(uint256 slippage) external;

	function toggleAutocompound() external;
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.12;

interface IOnwardIncentivesController {
	function handleAction(address _token, address _user, uint256 _balance, uint256 _totalSupply) external;
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.12;

interface IPriceProvider {
	function getTokenPrice() external view returns (uint256);

	function getTokenPriceUsd() external view returns (uint256);

	function getLpTokenPrice() external view returns (uint256);

	function getLpTokenPriceUsd() external view returns (uint256);

	function decimals() external view returns (uint256);

	function update() external;

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

// SPDX-License-Identifier: MIT

pragma solidity 0.8.12;

struct LockedBalance {
	uint256 amount;
	uint256 unlockTime;
	uint256 multiplier;
	uint256 duration;
}

struct EarnedBalance {
	uint256 amount;
	uint256 unlockTime;
	uint256 penalty;
}

struct Reward {
	uint256 periodFinish;
	uint256 rewardPerSecond;
	uint256 lastUpdateTime;
	uint256 rewardPerTokenStored;
	// tracks already-added balances to handle accrued interest in aToken rewards
	// for the stakingToken this value is unused and will always be 0
	uint256 balance;
}

struct Balances {
	uint256 total; // sum of earnings and lockings; no use when LP and RDNT is different
	uint256 unlocked; // RDNT token
	uint256 locked; // LP token or RDNT token
	uint256 lockedWithMultiplier; // Multiplied locked amount
	uint256 earned; // RDNT token
}

// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.8.12;

library DataTypes {
	// refer to the whitepaper, section 1.1 basic concepts for a formal description of these properties.
	struct ReserveData {
		//stores the reserve configuration
		ReserveConfigurationMap configuration;
		//the liquidity index. Expressed in ray
		uint128 liquidityIndex;
		//variable borrow index. Expressed in ray
		uint128 variableBorrowIndex;
		//the current supply rate. Expressed in ray
		uint128 currentLiquidityRate;
		//the current variable borrow rate. Expressed in ray
		uint128 currentVariableBorrowRate;
		//the current stable borrow rate. Expressed in ray
		uint128 currentStableBorrowRate;
		uint40 lastUpdateTimestamp;
		//tokens addresses
		address aTokenAddress;
		address stableDebtTokenAddress;
		address variableDebtTokenAddress;
		//address of the interest rate strategy
		address interestRateStrategyAddress;
		//the id of the reserve. Represents the position in the list of the active reserves
		uint8 id;
	}

	struct ReserveConfigurationMap {
		//bit 0-15: LTV
		//bit 16-31: Liq. threshold
		//bit 32-47: Liq. bonus
		//bit 48-55: Decimals
		//bit 56: Reserve is active
		//bit 57: reserve is frozen
		//bit 58: borrowing is enabled
		//bit 59: stable rate borrowing enabled
		//bit 60-63: reserved
		//bit 64-79: reserve factor
		///@custom:borrow-and-supply-caps
		//bit 80-115 borrow cap in whole tokens, borrowCap == 0 => no cap
		//bit 116-151 supply cap in whole tokens, supplyCap == 0 => no cap
		uint256 data;
	}

	struct UserConfigurationMap {
		uint256 data;
	}

	enum InterestRateMode {
		NONE,
		STABLE,
		VARIABLE
	}
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.12;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

/// @title RecoverERC20 contract
/// @author Radiant Devs
/// @dev All function calls are currently implemented without side effects
contract RecoverERC20 {
	using SafeERC20 for IERC20;

	/// @notice Emitted when ERC20 token is recovered
	event Recovered(address indexed token, uint256 amount);

	/**
	 * @notice Added to support recovering LP Rewards from other systems such as BAL to be distributed to holders
	 */
	function _recoverERC20(address tokenAddress, uint256 tokenAmount) internal {
		IERC20(tokenAddress).safeTransfer(msg.sender, tokenAmount);
		emit Recovered(tokenAddress, tokenAmount);
	}
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.12;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {Initializable} from "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import {OwnableUpgradeable} from "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
import {PausableUpgradeable} from "@openzeppelin/contracts-upgradeable/security/PausableUpgradeable.sol";

import {RecoverERC20} from "../libraries/RecoverERC20.sol";
import {IMultiFeeDistribution} from "../../interfaces/IMultiFeeDistribution.sol";
import {IEligibilityDataProvider} from "../../interfaces/IEligibilityDataProvider.sol";
import {IOnwardIncentivesController} from "../../interfaces/IOnwardIncentivesController.sol";
import {IMiddleFeeDistribution} from "../../interfaces/IMiddleFeeDistribution.sol";
import {ILeverager} from "../../interfaces/ILeverager.sol";

/// @title ChefIncentivesController Contract
/// @author Radiant
/// based on the Sushi MasterChef
///	https://github.com/sushiswap/sushiswap/blob/master/contracts/MasterChef.sol
contract ChefIncentivesController is Initializable, PausableUpgradeable, OwnableUpgradeable, RecoverERC20 {
	using SafeERC20 for IERC20;

	// Info of each user.
	// reward = user.`amount` * pool.`accRewardPerShare` - `rewardDebt`
	struct UserInfo {
		uint256 amount;
		uint256 rewardDebt;
		uint256 enterTime; // legacy value, kept to retain storage structure of userInfo array.
		uint256 lastClaimTime;
	}

	// Info of each pool.
	struct PoolInfo {
		uint256 totalSupply;
		uint256 allocPoint; // How many allocation points assigned to this pool.
		uint256 lastRewardTime; // Last second that reward distribution occurs.
		uint256 accRewardPerShare; // Accumulated rewards per share, times ACC_REWARD_PRECISION. See below.
		IOnwardIncentivesController onwardIncentives;
	}

	// Info about token emissions for a given time period.
	struct EmissionPoint {
		uint128 startTimeOffset;
		uint128 rewardsPerSecond;
	}

	// Info about ending time of reward emissions
	struct EndingTime {
		uint256 estimatedTime;
		uint256 lastUpdatedTime;
		uint256 updateCadence;
	}

	/********************** Events ***********************/
	// Emitted when rewardPerSecond is updated
	event RewardsPerSecondUpdated(uint256 indexed rewardsPerSecond, bool persist);

	event BalanceUpdated(address indexed token, address indexed user, uint256 balance, uint256 totalSupply);

	event EmissionScheduleAppended(uint256[] startTimeOffsets, uint256[] rewardsPerSeconds);

	event ChefReserveLow(uint256 indexed _balance);

	event Disqualified(address indexed user);

	event OnwardIncentivesUpdated(address indexed _token, IOnwardIncentivesController _incentives);

	event BountyManagerUpdated(address indexed _bountyManager);

	event EligibilityEnabledUpdated(bool indexed _newVal);

	event BatchAllocPointsUpdated(address[] _tokens, uint256[] _allocPoints);

	event AuthorizedContractUpdated(address _contract, bool _authorized);

	event EndingTimeUpdateCadence(uint256 indexed _lapse);

	event RewardDeposit(uint256 indexed _amount);

	/********************** Errors ***********************/
	error AddressZero();

	error UnknownPool();

	error PoolExists();

	error AlreadyStarted();

	error NotAllowed();

	error ArrayLengthMismatch();

	error NotAscending();

	error ExceedsMaxInt();

	error InvalidStart();

	error InvalidRToken();

	error InsufficientPermission();

	error AuthorizationAlreadySet();

	error NotMFD();

	error BountyOnly();

	error NotEligible();

	error CadenceTooLong();

	error NotRTokenOrMfd();

	error OutOfRewards();

	error NothingToVest();

	error DuplicateSchedule();

	// multiplier for reward calc
	uint256 private constant ACC_REWARD_PRECISION = 1e12;

	// Data about the future reward rates. emissionSchedule stored in chronological order,
	// whenever the duration since the start timestamp exceeds the next timestamp offset a new
	// reward rate is applied.
	EmissionPoint[] public emissionSchedule;

	// If true, keep this new reward rate indefinitely
	// If false, keep this reward rate until the next scheduled block offset, then return to the schedule.
	bool public persistRewardsPerSecond;

	/********************** Emission Info ***********************/

	// Array of tokens for reward
	address[] public registeredTokens;

	// Current reward per second
	uint256 public rewardsPerSecond;

	// last RPS, used during refill after reserve empty
	uint256 public lastRPS;

	// Index in emission schedule which the last rewardsPerSeconds was used
	// only used for scheduled rewards
	uint256 public emissionScheduleIndex;

	// Info of each pool.
	mapping(address => PoolInfo) public poolInfo;
	mapping(address => bool) private validRTokens;

	// Total allocation points. Must be the sum of all allocation points in all pools.
	uint256 public totalAllocPoint;

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

	// user => base claimable balance
	mapping(address => uint256) public userBaseClaimable;

	// MFD, bounties, AC, middlefee
	mapping(address => bool) public eligibilityExempt;

	// The block number when reward mining starts.
	uint256 public startTime;

	// Option for eligibility
	bool public eligibilityEnabled;

	// Address for PoolConfigurator
	address public poolConfigurator;

	// Amount of deposited rewards
	uint256 public depositedRewards;

	// Amount of accumulated rewards
	uint256 public accountedRewards;

	// Timestamp when all pools updated
	uint256 public lastAllPoolUpdate;

	// Middle Fee Distribution contract
	IMiddleFeeDistribution public rewardMinter;

	// Eligiblity Data Provider contract
	IEligibilityDataProvider public eligibleDataProvider;

	// Bounty Manager contract
	address public bountyManager;

	// Info of reward emission end time
	EndingTime public endingTime;

	// Contracts that are authorized to handle r/vdToken actions without triggering elgiibility checks
	mapping(address => bool) public authorizedContracts;

	/**
	 * @notice Initializer
	 * @param _poolConfigurator Pool configurator address
	 * @param _eligibleDataProvider Eligibility Data provider address
	 * @param _rewardMinter Middle fee distribution contract
	 * @param _rewardsPerSecond RPS
	 */
	function initialize(
		address _poolConfigurator,
		IEligibilityDataProvider _eligibleDataProvider,
		IMiddleFeeDistribution _rewardMinter,
		uint256 _rewardsPerSecond
	) public initializer {
		if (_poolConfigurator == address(0)) revert AddressZero();
		if (address(_eligibleDataProvider) == address(0)) revert AddressZero();
		if (address(_rewardMinter) == address(0)) revert AddressZero();

		__Ownable_init();
		__Pausable_init();

		poolConfigurator = _poolConfigurator;
		eligibleDataProvider = _eligibleDataProvider;
		rewardMinter = _rewardMinter;
		rewardsPerSecond = _rewardsPerSecond;
		persistRewardsPerSecond = true;

		eligibilityEnabled = true;
	}

	/**
	 * @dev Returns length of reward pools.
	 */
	function poolLength() public view returns (uint256) {
		return registeredTokens.length;
	}

	/**
	 * @dev Returns address of MFD.
	 * @return mfd contract address
	 */
	function _getMfd() internal view returns (IMultiFeeDistribution mfd) {
		address multiFeeDistribution = rewardMinter.getMultiFeeDistributionAddress();
		mfd = IMultiFeeDistribution(multiFeeDistribution);
	}

	/**
	 * @notice Sets incentive controllers for custom token.
	 * @param _token for reward pool
	 * @param _incentives incentives contract address
	 */
	function setOnwardIncentives(address _token, IOnwardIncentivesController _incentives) external onlyOwner {
		PoolInfo storage pool = poolInfo[_token];
		if (pool.lastRewardTime == 0) revert UnknownPool();
		pool.onwardIncentives = _incentives;
		emit OnwardIncentivesUpdated(_token, _incentives);
	}

	/**
	 * @dev Updates bounty manager contract.
	 * @param _bountyManager Bounty Manager contract.
	 */
	function setBountyManager(address _bountyManager) external onlyOwner {
		bountyManager = _bountyManager;
		emit BountyManagerUpdated(_bountyManager);
	}

	/**
	 * @dev Enable/Disable eligibility
	 * @param _newVal New value.
	 */
	function setEligibilityEnabled(bool _newVal) external onlyOwner {
		eligibilityEnabled = _newVal;
		emit EligibilityEnabledUpdated(_newVal);
	}

	/********************** Pool Setup + Admin ***********************/

	/**
	 * @dev Starts RDNT emission.
	 */
	function start() public onlyOwner {
		if (startTime != 0) revert AlreadyStarted();
		startTime = block.timestamp;
	}

	/**
	 * @dev Add a new lp to the pool. Can only be called by the poolConfigurator.
	 * @param _token for reward pool
	 * @param _allocPoint allocation point of the pool
	 */
	function addPool(address _token, uint256 _allocPoint) external {
		if (msg.sender != poolConfigurator && msg.sender != owner()) revert NotAllowed();
		if (poolInfo[_token].lastRewardTime != 0) revert PoolExists();
		_updateEmissions();
		totalAllocPoint = totalAllocPoint + _allocPoint;
		registeredTokens.push(_token);
		PoolInfo storage pool = poolInfo[_token];
		pool.allocPoint = _allocPoint;
		pool.lastRewardTime = block.timestamp;
		pool.onwardIncentives = IOnwardIncentivesController(address(0));
		validRTokens[_token] = true;
	}

	/**
	 * @dev Update the given pool's allocation point. Can only be called by the owner.
	 * @param _tokens for reward pools
	 * @param _allocPoints allocation points of the pools
	 */
	function batchUpdateAllocPoint(address[] calldata _tokens, uint256[] calldata _allocPoints) external onlyOwner {
		if (_tokens.length != _allocPoints.length) revert ArrayLengthMismatch();
		_massUpdatePools();
		uint256 _totalAllocPoint = totalAllocPoint;
		uint256 length = _tokens.length;
		for (uint256 i; i < length; ) {
			PoolInfo storage pool = poolInfo[_tokens[i]];
			if (pool.lastRewardTime == 0) revert UnknownPool();
			_totalAllocPoint = _totalAllocPoint - pool.allocPoint + _allocPoints[i];
			pool.allocPoint = _allocPoints[i];
			unchecked {
				i++;
			}
		}
		totalAllocPoint = _totalAllocPoint;
		emit BatchAllocPointsUpdated(_tokens, _allocPoints);
	}

	/**
	 * @notice Sets the reward per second to be distributed. Can only be called by the owner.
	 * @dev Its decimals count is ACC_REWARD_PRECISION
	 * @param _rewardsPerSecond The amount of reward to be distributed per second.
	 * @param _persist true if RPS is fixed, otherwise RPS is by emission schedule.
	 */
	function setRewardsPerSecond(uint256 _rewardsPerSecond, bool _persist) external onlyOwner {
		_massUpdatePools();
		rewardsPerSecond = _rewardsPerSecond;
		persistRewardsPerSecond = _persist;
		emit RewardsPerSecondUpdated(_rewardsPerSecond, _persist);
	}

	/**
	 * @dev Updates RPS.
	 */
	function setScheduledRewardsPerSecond() internal {
		if (!persistRewardsPerSecond) {
			uint256 length = emissionSchedule.length;
			uint256 i = emissionScheduleIndex;
			uint128 offset = uint128(block.timestamp - startTime);
			for (; i < length && offset >= emissionSchedule[i].startTimeOffset; ) {
				unchecked {
					i++;
				}
			}
			if (i > emissionScheduleIndex) {
				emissionScheduleIndex = i;
				_massUpdatePools();
				rewardsPerSecond = uint256(emissionSchedule[i - 1].rewardsPerSecond);
			}
		}
	}

	/**
	 * @notice Ensure that the specified time offset hasn't been registered already.
	 * @param _startTimeOffset time offset
	 * @return true if the specified time offset is already registered
	 */
	function _checkDuplicateSchedule(uint256 _startTimeOffset) internal view returns (bool) {
		uint256 length = emissionSchedule.length;
		for (uint256 i = 0; i < length; ) {
			if (emissionSchedule[i].startTimeOffset == _startTimeOffset) {
				return true;
			}
			unchecked {
				i++;
			}
		}
		return false;
	}

	/**
	 * @notice Updates RDNT emission schedule.
	 * @dev This appends the new offsets and RPS.
	 * @param _startTimeOffsets Offsets array.
	 * @param _rewardsPerSecond RPS array.
	 */
	function setEmissionSchedule(
		uint256[] calldata _startTimeOffsets,
		uint256[] calldata _rewardsPerSecond
	) external onlyOwner {
		uint256 length = _startTimeOffsets.length;
		if (length <= 0 || length != _rewardsPerSecond.length) revert ArrayLengthMismatch();

		for (uint256 i = 0; i < length; ) {
			if (i > 0) {
				if (_startTimeOffsets[i - 1] > _startTimeOffsets[i]) revert NotAscending();
			}
			if (_startTimeOffsets[i] > type(uint128).max) revert ExceedsMaxInt();
			if (_rewardsPerSecond[i] > type(uint128).max) revert ExceedsMaxInt();
			if (_checkDuplicateSchedule(_startTimeOffsets[i])) revert DuplicateSchedule();

			if (startTime > 0) {
				if (_startTimeOffsets[i] < block.timestamp - startTime) revert InvalidStart();
			}
			emissionSchedule.push(
				EmissionPoint({
					startTimeOffset: uint128(_startTimeOffsets[i]),
					rewardsPerSecond: uint128(_rewardsPerSecond[i])
				})
			);
			unchecked {
				i++;
			}
		}
		emit EmissionScheduleAppended(_startTimeOffsets, _rewardsPerSecond);
	}

	/**
	 * @notice Recover tokens in this contract. Callable by owner.
	 * @param tokenAddress Token address for recover
	 * @param tokenAmount Amount to recover
	 */
	function recoverERC20(address tokenAddress, uint256 tokenAmount) external onlyOwner {
		_recoverERC20(tokenAddress, tokenAmount);
	}

	/********************** Pool State Changers ***********************/

	/**
	 * @dev Update emission params of CIC.
	 */
	function _updateEmissions() internal {
		if (block.timestamp > endRewardTime()) {
			_massUpdatePools();
			lastRPS = rewardsPerSecond;
			rewardsPerSecond = 0;
			return;
		}
		setScheduledRewardsPerSecond();
	}

	/**
	 * @dev Update reward variables for all pools.
	 */
	function _massUpdatePools() internal {
		uint256 totalAP = totalAllocPoint;
		uint256 length = poolLength();
		for (uint256 i; i < length; ) {
			_updatePool(poolInfo[registeredTokens[i]], totalAP);
			unchecked {
				i++;
			}
		}
		lastAllPoolUpdate = block.timestamp;
	}

	/**
	 * @dev Update reward variables of the given pool to be up-to-date.
	 * @param pool pool info
	 * @param _totalAllocPoint allocation point of the pool
	 */
	function _updatePool(PoolInfo storage pool, uint256 _totalAllocPoint) internal {
		uint256 timestamp = block.timestamp;
		uint256 endReward = endRewardTime();
		if (endReward <= timestamp) {
			timestamp = endReward;
		}
		if (timestamp <= pool.lastRewardTime) {
			return;
		}

		(uint256 reward, uint256 newAccRewardPerShare) = _newRewards(pool, _totalAllocPoint);
		accountedRewards = accountedRewards + reward;
		pool.accRewardPerShare = pool.accRewardPerShare + newAccRewardPerShare;
		pool.lastRewardTime = timestamp;
	}

	/********************** Emission Calc + Transfer ***********************/

	/**
	 * @notice Pending rewards of a user.
	 * @param _user address for claim
	 * @param _tokens array of reward-bearing tokens
	 * @return claimable rewards array
	 */
	function pendingRewards(address _user, address[] memory _tokens) public view returns (uint256[] memory) {
		uint256[] memory claimable = new uint256[](_tokens.length);
		uint256 length = _tokens.length;
		for (uint256 i; i < length; ) {
			address token = _tokens[i];
			PoolInfo storage pool = poolInfo[token];
			UserInfo storage user = userInfo[token][_user];
			uint256 accRewardPerShare = pool.accRewardPerShare;
			if (block.timestamp > pool.lastRewardTime) {
				(, uint256 newAccRewardPerShare) = _newRewards(pool, totalAllocPoint);
				accRewardPerShare = accRewardPerShare + newAccRewardPerShare;
			}
			claimable[i] = (user.amount * accRewardPerShare) / ACC_REWARD_PRECISION - user.rewardDebt;
			unchecked {
				i++;
			}
		}
		return claimable;
	}

	/**
	 * @notice Claim rewards. They are vested into MFD.
	 * @param _user address for claim
	 * @param _tokens array of reward-bearing tokens
	 */
	function claim(address _user, address[] memory _tokens) public whenNotPaused {
		if (eligibilityEnabled) {
			checkAndProcessEligibility(_user, true, true);
		}

		_updateEmissions();

		uint256 currentTimestamp = block.timestamp;

		uint256 pending = userBaseClaimable[_user];
		userBaseClaimable[_user] = 0;
		uint256 _totalAllocPoint = totalAllocPoint;
		uint256 length = _tokens.length;
		for (uint256 i; i < length; ) {
			if (!validRTokens[_tokens[i]]) revert InvalidRToken();
			PoolInfo storage pool = poolInfo[_tokens[i]];
			if (pool.lastRewardTime == 0) revert UnknownPool();
			_updatePool(pool, _totalAllocPoint);
			UserInfo storage user = userInfo[_tokens[i]][_user];
			uint256 rewardDebt = (user.amount * pool.accRewardPerShare) / ACC_REWARD_PRECISION;
			pending = pending + rewardDebt - user.rewardDebt;
			user.rewardDebt = rewardDebt;
			user.lastClaimTime = currentTimestamp;
			unchecked {
				i++;
			}
		}

		_vestTokens(_user, pending);

		eligibleDataProvider.updatePrice();

		if (endRewardTime() < currentTimestamp + 5 days) {
			address rdntToken = rewardMinter.getRdntTokenAddress();
			emit ChefReserveLow(IERC20(rdntToken).balanceOf(address(this)));
		}
	}

	/**
	 * @notice Vest tokens to MFD.
	 * @param _user address to receive
	 * @param _amount to vest
	 */
	function _vestTokens(address _user, uint256 _amount) internal {
		if (_amount == 0) revert NothingToVest();
		IMultiFeeDistribution mfd = _getMfd();
		_sendRadiant(address(mfd), _amount);
		mfd.vestTokens(_user, _amount, true);
	}

	/**
	 * @notice Exempt a contract from eligibility check.
	 * @dev Can be called by owner or authorized contracts
	 * @param _contract address to exempt
	 * @param _value flag for exempt
	 */
	function setEligibilityExempt(address _contract, bool _value) public {
		if (msg.sender != owner() && !authorizedContracts[msg.sender]) revert InsufficientPermission();
		eligibilityExempt[_contract] = _value;
	}

	/**
	 * @notice Updates whether the provided address is authorized to call setEligibilityExempt(), only callable by owner.
	 * @param _address address of the user or contract whose authorization level is being changed
	 */
	function setContractAuthorization(address _address, bool _authorize) external onlyOwner {
		if (authorizedContracts[_address] == _authorize) revert AuthorizationAlreadySet();
		authorizedContracts[_address] = _authorize;
		emit AuthorizedContractUpdated(_address, _authorize);
	}

	/********************** Eligibility + Disqualification ***********************/

	/**
	 * @notice `after` Hook for deposit and borrow update.
	 * @dev important! eligible status can be updated here
	 * @param _user address
	 * @param _balance balance of token
	 * @param _totalSupply total supply of the token
	 */
	function handleActionAfter(address _user, uint256 _balance, uint256 _totalSupply) external {
		if (!validRTokens[msg.sender] && msg.sender != address(_getMfd())) revert NotRTokenOrMfd();

		if (_user == address(rewardMinter) || _user == address(_getMfd()) || eligibilityExempt[_user]) {
			return;
		}
		if (eligibilityEnabled) {
			bool lastEligibleStatus = eligibleDataProvider.lastEligibleStatus(_user);
			bool isCurrentlyEligible = eligibleDataProvider.refresh(_user);
			if (isCurrentlyEligible) {
				if (lastEligibleStatus) {
					_handleActionAfterForToken(msg.sender, _user, _balance, _totalSupply);
				} else {
					_updateRegisteredBalance(_user);
				}
			} else {
				_processEligibility(_user, isCurrentlyEligible, true);
			}
		} else {
			_handleActionAfterForToken(msg.sender, _user, _balance, _totalSupply);
		}
	}

	/**
	 * @notice `after` Hook for deposit and borrow update.
	 * @dev important! eligible status can be updated here
	 * @param _token address
	 * @param _user address
	 * @param _balance new amount
	 * @param _totalSupply total supply of the token
	 */
	function _handleActionAfterForToken(
		address _token,
		address _user,
		uint256 _balance,
		uint256 _totalSupply
	) internal {
		PoolInfo storage pool = poolInfo[_token];
		if (pool.lastRewardTime == 0) revert UnknownPool();
		// Although we would want the pools to be as up to date as possible when users
		// transfer rTokens or dTokens, updating all pools on every r-/d-Token interaction would be too gas intensive.
		// _updateEmissions();
		_updatePool(pool, totalAllocPoint);
		UserInfo storage user = userInfo[_token][_user];
		uint256 amount = user.amount;
		uint256 accRewardPerShare = pool.accRewardPerShare;
		if (amount != 0) {
			uint256 pending = (amount * accRewardPerShare) / ACC_REWARD_PRECISION - user.rewardDebt;
			if (pending != 0) {
				userBaseClaimable[_user] = userBaseClaimable[_user] + pending;
			}
		}
		pool.totalSupply = pool.totalSupply - user.amount;
		user.amount = _balance;
		user.rewardDebt = (_balance * accRewardPerShare) / ACC_REWARD_PRECISION;
		pool.totalSupply = pool.totalSupply + _balance;
		if (pool.onwardIncentives != IOnwardIncentivesController(address(0))) {
			pool.onwardIncentives.handleAction(_token, _user, _balance, _totalSupply);
		}

		emit BalanceUpdated(_token, _user, _balance, _totalSupply);
	}

	/**
	 * @notice `before` Hook for deposit and borrow update.
	 * @param _user address
	 */
	function handleActionBefore(address _user) external {}

	/**
	 * @notice Hook for lock update.
	 * @dev Called by the locking contracts before locking or unlocking happens
	 * @param _user address
	 */
	function beforeLockUpdate(address _user) external {}

	/**
	 * @notice Hook for lock update.
	 * @dev Called by the locking contracts after locking or unlocking happens
	 * @param _user address
	 */
	function afterLockUpdate(address _user) external {
		if (msg.sender != address(_getMfd())) revert NotMFD();
		if (eligibilityEnabled) {
			bool isCurrentlyEligible = eligibleDataProvider.refresh(_user);
			if (isCurrentlyEligible) {
				_updateRegisteredBalance(_user);
			} else {
				_processEligibility(_user, isCurrentlyEligible, true);
			}
		}
	}

	/**
	 * @notice Update balance if there are any unregistered.
	 * @param _user address of the user whose balances will be updated
	 */
	function _updateRegisteredBalance(address _user) internal {
		uint256 length = poolLength();
		for (uint256 i; i < length; ) {
			uint256 newBal = IERC20(registeredTokens[i]).balanceOf(_user);
			uint256 registeredBal = userInfo[registeredTokens[i]][_user].amount;
			if (newBal != 0 && newBal != registeredBal) {
				_handleActionAfterForToken(
					registeredTokens[i],
					_user,
					newBal,
					poolInfo[registeredTokens[i]].totalSupply + newBal - registeredBal
				);
			}
			unchecked {
				i++;
			}
		}
	}

	/********************** Eligibility + Disqualification ***********************/

	/**
	 * @dev Returns true if `_user` has some reward eligible tokens.
	 * @param _user address of recipient
	 */
	function hasEligibleDeposits(address _user) internal view returns (bool hasDeposits) {
		uint256 length = poolLength();
		for (uint256 i; i < length; ) {
			if (userInfo[registeredTokens[i]][_user].amount != 0) {
				hasDeposits = true;
				break;
			}
			unchecked {
				i++;
			}
		}
	}

	/**
	 * @dev Stop emissions if there's any new DQ.
	 * @param _user address of recipient
	 * @param _isEligible user's eligible status
	 * @param _execute true if it's actual execution
	 * @return issueBaseBounty true for base bounty
	 */
	function _processEligibility(
		address _user,
		bool _isEligible,
		bool _execute
	) internal returns (bool issueBaseBounty) {
		bool hasEligDeposits = hasEligibleDeposits(_user);
		uint256 lastDqTime = eligibleDataProvider.getDqTime(_user);
		bool alreadyDqd = lastDqTime != 0;

		if (!_isEligible && hasEligDeposits && !alreadyDqd) {
			issueBaseBounty = true;
		}
		if (_execute && issueBaseBounty) {
			stopEmissionsFor(_user);
			emit Disqualified(_user);
		}
	}

	/**
	 * @notice Check eligibility of the user
	 * @dev Stop emissions if there's any DQ.
	 * @param _user address of recipient
	 * @param _execute true if it's actual execution
	 * @param _refresh true if needs to refresh user's eligible status
	 * @return issueBaseBounty true for base bounty
	 */
	function checkAndProcessEligibility(
		address _user,
		bool _execute,
		bool _refresh
	) internal returns (bool issueBaseBounty) {
		bool isEligible;
		if (_refresh && _execute) {
			isEligible = eligibleDataProvider.refresh(_user);
		} else {
			isEligible = eligibleDataProvider.isEligibleForRewards(_user);
		}
		issueBaseBounty = _processEligibility(_user, isEligible, _execute);
	}

	/**
	 * @notice Claim bounty
	 * @param _user address of recipient
	 * @param _execute true if it's actual execution
	 * @return issueBaseBounty true for base bounty
	 */
	function claimBounty(address _user, bool _execute) public returns (bool issueBaseBounty) {
		if (msg.sender != address(bountyManager)) revert BountyOnly();
		issueBaseBounty = checkAndProcessEligibility(_user, _execute, true);
	}

	/**
	 * @dev Stop RDNT emissions for specific users
	 * @param _user address of recipient
	 */
	function stopEmissionsFor(address _user) internal {
		if (!eligibilityEnabled) revert NotEligible();
		// lastEligibleStatus will be fresh from refresh before this call
		uint256 length = poolLength();
		for (uint256 i; i < length; ) {
			address token = registeredTokens[i];
			PoolInfo storage pool = poolInfo[token];
			UserInfo storage user = userInfo[token][_user];

			if (user.amount != 0) {
				_handleActionAfterForToken(token, _user, 0, pool.totalSupply - user.amount);
			}
			unchecked {
				i++;
			}
		}
		eligibleDataProvider.setDqTime(_user, block.timestamp);
	}

	/**
	 * @dev Send RNDT rewards to user.
	 * @param _user address of recipient
	 * @param _amount of RDNT
	 */
	function _sendRadiant(address _user, uint256 _amount) internal {
		if (_amount == 0) {
			return;
		}

		address rdntToken = rewardMinter.getRdntTokenAddress();
		uint256 chefReserve = IERC20(rdntToken).balanceOf(address(this));
		if (_amount > chefReserve) {
			revert OutOfRewards();
		} else {
			IERC20(rdntToken).safeTransfer(_user, _amount);
		}
	}

	/********************** RDNT Reserve Management ***********************/

	/**
	 * @notice Ending reward distribution time.
	 */
	function endRewardTime() public returns (uint256) {
		uint256 unclaimedRewards = availableRewards();
		uint256 extra = 0;
		uint256 length = poolLength();
		for (uint256 i; i < length; ) {
			PoolInfo storage pool = poolInfo[registeredTokens[i]];

			if (pool.lastRewardTime > lastAllPoolUpdate) {
				extra +=
					((pool.lastRewardTime - lastAllPoolUpdate) * pool.allocPoint * rewardsPerSecond) /
					totalAllocPoint;
			}
			unchecked {
				i++;
			}
		}
		endingTime.lastUpdatedTime = block.timestamp;

		if (rewardsPerSecond == 0) {
			endingTime.estimatedTime = type(uint256).max;
		} else {
			endingTime.estimatedTime = (unclaimedRewards + extra) / rewardsPerSecond + lastAllPoolUpdate;
		}
		return endingTime.estimatedTime;
	}

	/**
	 * @notice Updates cadence duration of ending time.
	 * @dev Only callable by owner.
	 * @param _lapse new cadence
	 */
	function setEndingTimeUpdateCadence(uint256 _lapse) external onlyOwner {
		if (_lapse > 1 weeks) revert CadenceTooLong();
		endingTime.updateCadence = _lapse;
		emit EndingTimeUpdateCadence(_lapse);
	}

	/**
	 * @notice Add new rewards.
	 * @dev Only callable by owner.
	 * @param _amount new deposit amount
	 */
	function registerRewardDeposit(uint256 _amount) external onlyOwner {
		depositedRewards = depositedRewards + _amount;
		_massUpdatePools();
		if (rewardsPerSecond == 0 && lastRPS > 0) {
			rewardsPerSecond = lastRPS;
		}
		emit RewardDeposit(_amount);
	}

	/**
	 * @notice Available reward amount for future distribution.
	 * @dev This value is equal to `depositedRewards` - `accountedRewards`.
	 * @return amount available
	 */
	function availableRewards() internal view returns (uint256 amount) {
		return depositedRewards - accountedRewards;
	}

	/**
	 * @notice Claim rewards entitled to all registered tokens.
	 * @param _user address of the user
	 */
	function claimAll(address _user) external {
		claim(_user, registeredTokens);
	}

	/**
	 * @notice Sum of all pending RDNT rewards.
	 * @param _user address of the user
	 * @return pending reward amount
	 */
	function allPendingRewards(address _user) public view returns (uint256 pending) {
		pending = userBaseClaimable[_user];
		uint256[] memory claimable = pendingRewards(_user, registeredTokens);
		uint256 length = claimable.length;
		for (uint256 i; i < length; ) {
			pending += claimable[i];
			unchecked {
				i++;
			}
		}
	}

	/**
	 * @notice Pause the claim operations.
	 */
	function pause() external onlyOwner {
		_pause();
	}

	/**
	 * @notice Unpause the claim operations.
	 */
	function unpause() external onlyOwner {
		_unpause();
	}

	/**
	 * @dev Returns new rewards since last reward time.
	 * @param pool pool info
	 * @param _totalAllocPoint allocation point of the pool
	 */
	function _newRewards(
		PoolInfo memory pool,
		uint256 _totalAllocPoint
	) internal view returns (uint256 newReward, uint256 newAccRewardPerShare) {
		uint256 lpSupply = pool.totalSupply;
		if (lpSupply > 0) {
			uint256 duration = block.timestamp - pool.lastRewardTime;
			uint256 rawReward = duration * rewardsPerSecond;

			uint256 rewards = availableRewards();
			if (rewards < rawReward) {
				rawReward = rewards;
			}
			newReward = (rawReward * pool.allocPoint) / _totalAllocPoint;
			newAccRewardPerShare = (newReward * ACC_REWARD_PRECISION) / lpSupply;
		}
	}
}

{
  "optimizer": {
    "enabled": true,
    "runs": 999999,
    "details": {
      "yul": true
    }
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"AddressZero","type":"error"},{"inputs":[],"name":"InvalidRatio","type":"error"},{"inputs":[],"name":"LPTokenSet","type":"error"},{"inputs":[],"name":"MissingEligibleLendingPools","type":"error"},{"inputs":[],"name":"OnlyCIC","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"contract ChefIncentivesController","name":"_chef","type":"address"}],"name":"ChefIncentivesControllerUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_user","type":"address"},{"indexed":false,"internalType":"uint256","name":"_time","type":"uint256"}],"name":"DqTimeUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"contract ILendingPool[]","name":"eligibleRizLendingPools","type":"address[]"}],"name":"EligibleRizLendingPoolsUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"version","type":"uint8"}],"name":"Initialized","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_lpToken","type":"address"}],"name":"LPTokenUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"priceToleranceRatio","type":"uint256"}],"name":"PriceToleranceRatioUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"requiredDepositRatio","type":"uint256"}],"name":"RequiredDepositRatioUpdated","type":"event"},{"inputs":[],"name":"INITIAL_PRICE_TOLERANCE_RATIO","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"INITIAL_REQUIRED_DEPOSIT_RATIO","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MIN_PRICE_TOLERANCE_RATIO","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"RATIO_DIVISOR","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"chef","outputs":[{"internalType":"contract ChefIncentivesController","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"disqualifiedTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_user","type":"address"}],"name":"getDqTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getEligibleRizLendingPools","outputs":[{"internalType":"contract ILendingPool[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract ILendingPool","name":"_lendingPool","type":"address"},{"internalType":"contract IMiddleFeeDistribution","name":"_middleFeeDistribution","type":"address"},{"internalType":"contract IPriceProvider","name":"_priceProvider","type":"address"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_user","type":"address"}],"name":"isEligibleForRewards","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"lastEligibleStatus","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"lastEligibleTime","outputs":[{"internalType":"uint256","name":"lastEligibleTimestamp","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lendingPool","outputs":[{"internalType":"contract ILendingPool","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"lockedUsdValue","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lpToken","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"middleFeeDistribution","outputs":[{"internalType":"contract IMiddleFeeDistribution","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"obsoleteMapping2","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"priceProvider","outputs":[{"internalType":"contract IPriceProvider","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"priceToleranceRatio","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"refresh","outputs":[{"internalType":"bool","name":"currentEligibility","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"requiredDepositRatio","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"requiredUsdValue","outputs":[{"internalType":"uint256","name":"required","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract ChefIncentivesController","name":"_chef","type":"address"}],"name":"setChefIncentivesController","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_user","type":"address"},{"internalType":"uint256","name":"_time","type":"uint256"}],"name":"setDqTime","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract ILendingPool[]","name":"pools","type":"address[]"}],"name":"setEligibleRizLendingPools","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_lpToken","type":"address"}],"name":"setLPToken","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_priceToleranceRatio","type":"uint256"}],"name":"setPriceToleranceRatio","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_requiredDepositRatio","type":"uint256"}],"name":"setRequiredDepositRatio","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"updatePrice","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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