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

pragma solidity ^0.8.0;

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

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

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

/**
 * @title Errors library
 * @author Aave
 * @notice Defines the error messages emitted by the different contracts of the Aave protocol
 * @dev Error messages prefix glossary:
 *  - VL = ValidationLogic
 *  - MATH = Math libraries
 *  - CT = Common errors between tokens (AToken, VariableDebtToken and StableDebtToken)
 *  - AT = AToken
 *  - SDT = StableDebtToken
 *  - VDT = VariableDebtToken
 *  - LP = LendingPool
 *  - LPAPR = LendingPoolAddressesProviderRegistry
 *  - LPC = LendingPoolConfiguration
 *  - RL = ReserveLogic
 *  - LPCM = LendingPoolCollateralManager
 *  - P = Pausable
 */
library Errors {
	//common errors
	string public constant CALLER_NOT_POOL_ADMIN = "33"; // 'The caller must be the pool admin'
	string public constant BORROW_ALLOWANCE_NOT_ENOUGH = "59"; // User borrows on behalf, but allowance are too small

	//contract specific errors
	string public constant VL_INVALID_AMOUNT = "1"; // 'Amount must be greater than 0'
	string public constant VL_NO_ACTIVE_RESERVE = "2"; // 'Action requires an active reserve'
	string public constant VL_RESERVE_FROZEN = "3"; // 'Action cannot be performed because the reserve is frozen'
	string public constant VL_CURRENT_AVAILABLE_LIQUIDITY_NOT_ENOUGH = "4"; // 'The current liquidity is not enough'
	string public constant VL_NOT_ENOUGH_AVAILABLE_USER_BALANCE = "5"; // 'User cannot withdraw more than the available balance'
	string public constant VL_TRANSFER_NOT_ALLOWED = "6"; // 'Transfer cannot be allowed.'
	string public constant VL_BORROWING_NOT_ENABLED = "7"; // 'Borrowing is not enabled'
	string public constant VL_INVALID_INTEREST_RATE_MODE_SELECTED = "8"; // 'Invalid interest rate mode selected'
	string public constant VL_COLLATERAL_BALANCE_IS_0 = "9"; // 'The collateral balance is 0'
	string public constant VL_HEALTH_FACTOR_LOWER_THAN_LIQUIDATION_THRESHOLD = "10"; // 'Health factor is lesser than the liquidation threshold'
	string public constant VL_COLLATERAL_CANNOT_COVER_NEW_BORROW = "11"; // 'There is not enough collateral to cover a new borrow'
	string public constant VL_STABLE_BORROWING_NOT_ENABLED = "12"; // stable borrowing not enabled
	string public constant VL_COLLATERAL_SAME_AS_BORROWING_CURRENCY = "13"; // collateral is (mostly) the same currency that is being borrowed
	string public constant VL_AMOUNT_BIGGER_THAN_MAX_LOAN_SIZE_STABLE = "14"; // 'The requested amount is greater than the max loan size in stable rate mode
	string public constant VL_NO_DEBT_OF_SELECTED_TYPE = "15"; // 'for repayment of stable debt, the user needs to have stable debt, otherwise, he needs to have variable debt'
	string public constant VL_NO_EXPLICIT_AMOUNT_TO_REPAY_ON_BEHALF = "16"; // 'To repay on behalf of an user an explicit amount to repay is needed'
	string public constant VL_NO_STABLE_RATE_LOAN_IN_RESERVE = "17"; // 'User does not have a stable rate loan in progress on this reserve'
	string public constant VL_NO_VARIABLE_RATE_LOAN_IN_RESERVE = "18"; // 'User does not have a variable rate loan in progress on this reserve'
	string public constant VL_UNDERLYING_BALANCE_NOT_GREATER_THAN_0 = "19"; // 'The underlying balance needs to be greater than 0'
	string public constant VL_DEPOSIT_ALREADY_IN_USE = "20"; // 'User deposit is already being used as collateral'
	string public constant LP_NOT_ENOUGH_STABLE_BORROW_BALANCE = "21"; // 'User does not have any stable rate loan for this reserve'
	string public constant LP_INTEREST_RATE_REBALANCE_CONDITIONS_NOT_MET = "22"; // 'Interest rate rebalance conditions were not met'
	string public constant LP_LIQUIDATION_CALL_FAILED = "23"; // 'Liquidation call failed'
	string public constant LP_NOT_ENOUGH_LIQUIDITY_TO_BORROW = "24"; // 'There is not enough liquidity available to borrow'
	string public constant LP_REQUESTED_AMOUNT_TOO_SMALL = "25"; // 'The requested amount is too small for a FlashLoan.'
	string public constant LP_INCONSISTENT_PROTOCOL_ACTUAL_BALANCE = "26"; // 'The actual balance of the protocol is inconsistent'
	string public constant LP_CALLER_NOT_LENDING_POOL_CONFIGURATOR = "27"; // 'The caller of the function is not the lending pool configurator'
	string public constant LP_INCONSISTENT_FLASHLOAN_PARAMS = "28";
	string public constant CT_CALLER_MUST_BE_LENDING_POOL = "29"; // 'The caller of this function must be a lending pool'
	string public constant CT_CANNOT_GIVE_ALLOWANCE_TO_HIMSELF = "30"; // 'User cannot give allowance to himself'
	string public constant CT_TRANSFER_AMOUNT_NOT_GT_0 = "31"; // 'Transferred amount needs to be greater than zero'
	string public constant RL_RESERVE_ALREADY_INITIALIZED = "32"; // 'Reserve has already been initialized'
	string public constant LPC_RESERVE_LIQUIDITY_NOT_0 = "34"; // 'The liquidity of the reserve needs to be 0'
	string public constant LPC_INVALID_ATOKEN_POOL_ADDRESS = "35"; // 'The liquidity of the reserve needs to be 0'
	string public constant LPC_INVALID_STABLE_DEBT_TOKEN_POOL_ADDRESS = "36"; // 'The liquidity of the reserve needs to be 0'
	string public constant LPC_INVALID_VARIABLE_DEBT_TOKEN_POOL_ADDRESS = "37"; // 'The liquidity of the reserve needs to be 0'
	string public constant LPC_INVALID_STABLE_DEBT_TOKEN_UNDERLYING_ADDRESS = "38"; // 'The liquidity of the reserve needs to be 0'
	string public constant LPC_INVALID_VARIABLE_DEBT_TOKEN_UNDERLYING_ADDRESS = "39"; // 'The liquidity of the reserve needs to be 0'
	string public constant LPC_INVALID_ADDRESSES_PROVIDER_ID = "40"; // 'The liquidity of the reserve needs to be 0'
	string public constant LPC_INVALID_CONFIGURATION = "75"; // 'Invalid risk parameters for the reserve'
	string public constant LPC_CALLER_NOT_EMERGENCY_ADMIN = "76"; // 'The caller must be the emergency admin'
	string public constant LPAPR_PROVIDER_NOT_REGISTERED = "41"; // 'Provider is not registered'
	string public constant LPCM_HEALTH_FACTOR_NOT_BELOW_THRESHOLD = "42"; // 'Health factor is not below the threshold'
	string public constant LPCM_COLLATERAL_CANNOT_BE_LIQUIDATED = "43"; // 'The collateral chosen cannot be liquidated'
	string public constant LPCM_SPECIFIED_CURRENCY_NOT_BORROWED_BY_USER = "44"; // 'User did not borrow the specified currency'
	string public constant LPCM_NOT_ENOUGH_LIQUIDITY_TO_LIQUIDATE = "45"; // "There isn't enough liquidity available to liquidate"
	string public constant LPCM_NO_ERRORS = "46"; // 'No errors'
	string public constant LP_INVALID_FLASHLOAN_MODE = "47"; //Invalid flashloan mode selected
	string public constant MATH_MULTIPLICATION_OVERFLOW = "48";
	string public constant MATH_ADDITION_OVERFLOW = "49";
	string public constant MATH_DIVISION_BY_ZERO = "50";
	string public constant RL_LIQUIDITY_INDEX_OVERFLOW = "51"; //  Liquidity index overflows uint128
	string public constant RL_VARIABLE_BORROW_INDEX_OVERFLOW = "52"; //  Variable borrow index overflows uint128
	string public constant RL_LIQUIDITY_RATE_OVERFLOW = "53"; //  Liquidity rate overflows uint128
	string public constant RL_VARIABLE_BORROW_RATE_OVERFLOW = "54"; //  Variable borrow rate overflows uint128
	string public constant RL_STABLE_BORROW_RATE_OVERFLOW = "55"; //  Stable borrow rate overflows uint128
	string public constant CT_INVALID_MINT_AMOUNT = "56"; //invalid amount to mint
	string public constant LP_FAILED_REPAY_WITH_COLLATERAL = "57";
	string public constant CT_INVALID_BURN_AMOUNT = "58"; //invalid amount to burn
	string public constant LP_FAILED_COLLATERAL_SWAP = "60";
	string public constant LP_INVALID_EQUAL_ASSETS_TO_SWAP = "61";
	string public constant LP_REENTRANCY_NOT_ALLOWED = "62";
	string public constant LP_CALLER_MUST_BE_AN_ATOKEN = "63";
	string public constant LP_IS_PAUSED = "64"; // 'Pool is paused'
	string public constant LP_NO_MORE_RESERVES_ALLOWED = "65";
	string public constant LP_INVALID_FLASH_LOAN_EXECUTOR_RETURN = "66";
	string public constant RC_INVALID_LTV = "67";
	string public constant RC_INVALID_LIQ_THRESHOLD = "68";
	string public constant RC_INVALID_LIQ_BONUS = "69";
	string public constant RC_INVALID_DECIMALS = "70";
	string public constant RC_INVALID_RESERVE_FACTOR = "71";
	string public constant LPAPR_INVALID_ADDRESSES_PROVIDER_ID = "72";
	string public constant VL_INCONSISTENT_FLASHLOAN_PARAMS = "73";
	string public constant LP_INCONSISTENT_PARAMS_LENGTH = "74";
	string public constant UL_INVALID_INDEX = "77";
	string public constant LP_NOT_CONTRACT = "78";
	string public constant SDT_STABLE_DEBT_OVERFLOW = "79";
	string public constant SDT_BURN_EXCEEDS_BALANCE = "80";

	/**
	 * @dev Custom Radiant codes added +200 to avoid conflicts with the AaveV2/V3 ones
	 * @custom:borrow-and-supply-caps
	 */
	string public constant INVALID_BORROW_CAP = "201"; // Invalid borrow cap value
	string public constant INVALID_SUPPLY_CAP = "202"; // Invalid supply cap value
	string public constant BORROW_CAP_EXCEEDED = "203"; // Borrow cap is exceeded
	string public constant SUPPLY_CAP_EXCEEDED = "204"; // Supply cap is exceeded

	enum CollateralManagerErrors {
		NO_ERROR,
		NO_COLLATERAL_AVAILABLE,
		COLLATERAL_CANNOT_BE_LIQUIDATED,
		CURRRENCY_NOT_BORROWED,
		HEALTH_FACTOR_ABOVE_THRESHOLD,
		NOT_ENOUGH_LIQUIDITY,
		NO_ACTIVE_RESERVE,
		HEALTH_FACTOR_LOWER_THAN_LIQUIDATION_THRESHOLD,
		INVALID_EQUAL_ASSETS_TO_SWAP,
		FROZEN_RESERVE
	}
}

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

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {DataTypes} from "../types/DataTypes.sol";

/**
 * @title Helpers library
 * @author Aave
 */
library Helpers {
	/**
	 * @dev Fetches the user current stable and variable debt balances
	 * @param user The user address
	 * @param reserve The reserve data object
	 * @return The stable and variable debt balance
	 **/
	function getUserCurrentDebt(
		address user,
		DataTypes.ReserveData storage reserve
	) internal view returns (uint256, uint256) {
		return (
			IERC20(reserve.stableDebtTokenAddress).balanceOf(user),
			IERC20(reserve.variableDebtTokenAddress).balanceOf(user)
		);
	}

	function getUserCurrentDebtMemory(
		address user,
		DataTypes.ReserveData memory reserve
	) internal view returns (uint256, uint256) {
		return (
			IERC20(reserve.stableDebtTokenAddress).balanceOf(user),
			IERC20(reserve.variableDebtTokenAddress).balanceOf(user)
		);
	}
}

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

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IScaledBalanceToken} from "./IScaledBalanceToken.sol";
import {IInitializableAToken} from "./IInitializableAToken.sol";
import {IAaveIncentivesController} from "./IAaveIncentivesController.sol";
import {ILendingPool} from "./ILendingPool.sol";

interface IAToken is IERC20, IScaledBalanceToken, IInitializableAToken {
	/**
	 * @dev Emitted after the mint action
	 * @param from The address performing the mint
	 * @param value The amount being
	 * @param index The new liquidity index of the reserve
	 **/
	event Mint(address indexed from, uint256 value, uint256 index);

	/**
	 * @dev Mints `amount` aTokens to `user`
	 * @param user The address receiving the minted tokens
	 * @param amount The amount of tokens getting minted
	 * @param index The new liquidity index of the reserve
	 * @return `true` if the the previous balance of the user was 0
	 */
	function mint(address user, uint256 amount, uint256 index) external returns (bool);

	/**
	 * @dev Emitted after aTokens are burned
	 * @param from The owner of the aTokens, getting them burned
	 * @param target The address that will receive the underlying
	 * @param value The amount being burned
	 * @param index The new liquidity index of the reserve
	 **/
	event Burn(address indexed from, address indexed target, uint256 value, uint256 index);

	/**
	 * @dev Emitted during the transfer action
	 * @param from The user whose tokens are being transferred
	 * @param to The recipient
	 * @param value The amount being transferred
	 * @param index The new liquidity index of the reserve
	 **/
	event BalanceTransfer(address indexed from, address indexed to, uint256 value, uint256 index);

	/**
	 * @dev Burns aTokens from `user` and sends the equivalent amount of underlying to `receiverOfUnderlying`
	 * @param user The owner of the aTokens, getting them burned
	 * @param receiverOfUnderlying The address that will receive the underlying
	 * @param amount The amount being burned
	 * @param index The new liquidity index of the reserve
	 **/
	function burn(address user, address receiverOfUnderlying, uint256 amount, uint256 index) external;

	/**
	 * @dev Mints aTokens to the reserve treasury
	 * @param amount The amount of tokens getting minted
	 * @param index The new liquidity index of the reserve
	 */
	function mintToTreasury(uint256 amount, uint256 index) external;

	/**
	 * @dev Transfers aTokens in the event of a borrow being liquidated, in case the liquidators reclaims the aToken
	 * @param from The address getting liquidated, current owner of the aTokens
	 * @param to The recipient
	 * @param value The amount of tokens getting transferred
	 **/
	function transferOnLiquidation(address from, address to, uint256 value) external;

	/**
	 * @dev Transfers the underlying asset to `target`. Used by the LendingPool to transfer
	 * assets in borrow(), withdraw() and flashLoan()
	 * @param user The recipient of the underlying
	 * @param amount The amount getting transferred
	 * @return The amount transferred
	 **/
	function transferUnderlyingTo(address user, uint256 amount) external returns (uint256);

	/**
	 * @dev Invoked to execute actions on the aToken side after a repayment.
	 * @param user The user executing the repayment
	 * @param amount The amount getting repaid
	 **/
	function handleRepayment(address user, uint256 amount) external;

	/**
	 * @dev Updates the treasury address
	 * @param treasury The new treasury address
	 */
	function setTreasuryAddress(address treasury) external;

	/**
	 * @dev Returns the address of the incentives controller contract
	 **/
	function getIncentivesController() external view returns (IAaveIncentivesController);

	/**
	 * @dev Returns the address of the underlying asset of this aToken (E.g. WETH for aWETH)
	 **/
	function UNDERLYING_ASSET_ADDRESS() external view returns (address);

	/**
	 * @dev Returns the address of the lending pool where this aToken is used
	 **/
	function POOL() external view returns (ILendingPool);
}

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

interface IAaveIncentivesController {
	event RewardsAccrued(address indexed user, uint256 amount);

	event RewardsClaimed(address indexed user, address indexed to, uint256 amount);

	event RewardsClaimed(address indexed user, address indexed to, address indexed claimer, uint256 amount);

	event ClaimerSet(address indexed user, address indexed claimer);

	/*
	 * @dev Returns the configuration of the distribution for a certain asset
	 * @param asset The address of the reference asset of the distribution
	 * @return The asset index, the emission per second and the last updated timestamp
	 **/
	function getAssetData(address asset) external view returns (uint256, uint256, uint256);

	/**
	 * @dev Whitelists an address to claim the rewards on behalf of another address
	 * @param user The address of the user
	 * @param claimer The address of the claimer
	 */
	function setClaimer(address user, address claimer) external;

	/**
	 * @dev Returns the whitelisted claimer for a certain address (0x0 if not set)
	 * @param user The address of the user
	 * @return The claimer address
	 */
	function getClaimer(address user) external view returns (address);

	/**
	 * @dev Configure assets for a certain rewards emission
	 * @param assets The assets to incentivize
	 * @param emissionsPerSecond The emission for each asset
	 */
	function configureAssets(address[] calldata assets, uint256[] calldata emissionsPerSecond) external;

	/**
	 * @dev Called by the corresponding asset on any update that affects the rewards distribution
	 * @param user The address of the user
	 **/
	function handleActionBefore(address user) external;

	/**
	 * @dev Called by the corresponding asset on any update that affects the rewards distribution
	 * @param user The address of the user
	 * @param userBalance The balance of the user of the asset in the lending pool
	 * @param totalSupply The total supply of the asset in the lending pool
	 **/
	function handleActionAfter(address user, uint256 userBalance, uint256 totalSupply) external;

	/**
	 * @dev Returns the total of rewards of an user, already accrued + not yet accrued
	 * @param user The address of the user
	 * @return The rewards
	 **/
	function getRewardsBalance(address[] calldata assets, address user) external view returns (uint256);

	/**
	 * @dev Claims reward for an user, on all the assets of the lending pool, accumulating the pending rewards
	 * @param amount Amount of rewards to claim
	 * @param to Address that will be receiving the rewards
	 * @return Rewards claimed
	 **/
	function claimRewards(address[] calldata assets, uint256 amount, address to) external returns (uint256);

	/**
	 * @dev Claims reward for an user on behalf, on all the assets of the lending pool, accumulating the pending rewards. The caller must
	 * be whitelisted via "allowClaimOnBehalf" function by the RewardsAdmin role manager
	 * @param amount Amount of rewards to claim
	 * @param user Address to check and claim rewards
	 * @param to Address that will be receiving the rewards
	 * @return Rewards claimed
	 **/
	function claimRewardsOnBehalf(
		address[] calldata assets,
		uint256 amount,
		address user,
		address to
	) external returns (uint256);

	/**
	 * @dev returns the unclaimed rewards of the user
	 * @param user the address of the user
	 * @return the unclaimed user rewards
	 */
	function getUserUnclaimedRewards(address user) external view returns (uint256);

	/**
	 * @dev returns the unclaimed rewards of the user
	 * @param user the address of the user
	 * @param asset The asset to incentivize
	 * @return the user index for the asset
	 */
	function getUserAssetData(address user, address asset) external view returns (uint256);

	/**
	 * @dev for backward compatibility with previous implementation of the Incentives controller
	 */
	function REWARD_TOKEN() external view returns (address);

	/**
	 * @dev for backward compatibility with previous implementation of the Incentives controller
	 */
	function PRECISION() external view returns (uint8);

	/**
	 * @dev Gets the distribution end timestamp of the emissions
	 */
	function DISTRIBUTION_END() external view returns (uint256);
}

// 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: agpl-3.0
pragma solidity 0.8.12;

import {ILendingPool} from "./ILendingPool.sol";
import {IAaveIncentivesController} from "./IAaveIncentivesController.sol";

/**
 * @title IInitializableAToken
 * @notice Interface for the initialize function on AToken
 * @author Aave
 **/
interface IInitializableAToken {
	/**
	 * @dev Emitted when an aToken is initialized
	 * @param underlyingAsset The address of the underlying asset
	 * @param pool The address of the associated lending pool
	 * @param treasury The address of the treasury
	 * @param incentivesController The address of the incentives controller for this aToken
	 * @param aTokenDecimals the decimals of the underlying
	 * @param aTokenName the name of the aToken
	 * @param aTokenSymbol the symbol of the aToken
	 * @param params A set of encoded parameters for additional initialization
	 **/
	event Initialized(
		address indexed underlyingAsset,
		address indexed pool,
		address treasury,
		address incentivesController,
		uint8 aTokenDecimals,
		string aTokenName,
		string aTokenSymbol,
		bytes params
	);

	/**
	 * @dev Initializes the aToken
	 * @param pool The address of the lending pool where this aToken will be used
	 * @param treasury The address of the Aave treasury, receiving the fees on this aToken
	 * @param underlyingAsset The address of the underlying asset of this aToken (E.g. WETH for aWETH)
	 * @param incentivesController The smart contract managing potential incentives distribution
	 * @param aTokenDecimals The decimals of the aToken, same as the underlying asset's
	 * @param aTokenName The name of the aToken
	 * @param aTokenSymbol The symbol of the aToken
	 */
	function initialize(
		ILendingPool pool,
		address treasury,
		address underlyingAsset,
		IAaveIncentivesController incentivesController,
		uint8 aTokenDecimals,
		string calldata aTokenName,
		string calldata aTokenSymbol,
		bytes calldata params
	) 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;

interface IScaledBalanceToken {
	/**
	 * @dev Returns the scaled balance of the user. The scaled balance is the sum of all the
	 * updated stored balance divided by the reserve's liquidity index at the moment of the update
	 * @param user The user whose balance is calculated
	 * @return The scaled balance of the user
	 **/
	function scaledBalanceOf(address user) external view returns (uint256);

	/**
	 * @dev Returns the scaled balance of the user and the scaled total supply.
	 * @param user The address of the user
	 * @return The scaled balance of the user
	 * @return The scaled balance and the scaled total supply
	 **/
	function getScaledUserBalanceAndSupply(address user) external view returns (uint256, uint256);

	/**
	 * @dev Returns the scaled total supply of the variable debt token. Represents sum(debt/index)
	 * @return The scaled total supply
	 **/
	function scaledTotalSupply() external view returns (uint256);
}

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

interface IWETH {
	function balanceOf(address) external returns (uint256);

	function deposit() external payable;

	function withdraw(uint256) external;

	function approve(address guy, uint256 wad) external returns (bool);

	function transferFrom(address src, address dst, uint256 wad) external returns (bool);

	function transfer(address to, uint256 value) external returns (bool);

	function allowance(address owner, address spender) external returns (uint256);
}

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

interface IWETHGateway {
	function depositETH(address lendingPool, address onBehalfOf, uint16 referralCode) external payable;

	function withdrawETH(address lendingPool, uint256 amount, address onBehalfOf) external;

	function repayETH(address lendingPool, uint256 amount, uint256 rateMode, address onBehalfOf) external payable;

	function borrowETH(address lendingPool, uint256 amount, uint256 interesRateMode, uint16 referralCode) external;
}

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

pragma solidity ^0.8.0;

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

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

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

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

    /**
     * @dev 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);
    }
}

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

import {Errors} from "../helpers/Errors.sol";
import {DataTypes} from "../types/DataTypes.sol";

/**
 * @title ReserveConfiguration library
 * @author Aave
 * @notice Implements the bitmap logic to handle the reserve configuration
 */
library ReserveConfiguration {
	uint256 constant LTV_MASK =                   0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0000; // prettier-ignore
	uint256 constant LIQUIDATION_THRESHOLD_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0000FFFF; // prettier-ignore
	uint256 constant LIQUIDATION_BONUS_MASK =     0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0000FFFFFFFF; // prettier-ignore
	uint256 constant DECIMALS_MASK =              0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00FFFFFFFFFFFF; // prettier-ignore
	uint256 constant ACTIVE_MASK =                0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFFFFFFFFFF; // prettier-ignore
	uint256 constant FROZEN_MASK =                0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFDFFFFFFFFFFFFFF; // prettier-ignore
	uint256 constant BORROWING_MASK =             0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFBFFFFFFFFFFFFFF; // prettier-ignore
	uint256 constant STABLE_BORROWING_MASK =      0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF7FFFFFFFFFFFFFF; // prettier-ignore
	uint256 constant RESERVE_FACTOR_MASK =        0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0000FFFFFFFFFFFFFFFF; // prettier-ignore

	///@custom:borrow-and-supply-caps
	uint256 internal constant BORROW_CAP_MASK =   0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF000000000FFFFFFFFFFFFFFFFFFFF; // prettier-ignore
	uint256 internal constant SUPPLY_CAP_MASK =   0xFFFFFFFFFFFFFFFFFFFFFFFFFF000000000FFFFFFFFFFFFFFFFFFFFFFFFFFFFF; // prettier-ignore

	/// @dev For the LTV, the start bit is 0 (up to 15), hence no bitshifting is needed
	uint256 constant LIQUIDATION_THRESHOLD_START_BIT_POSITION = 16;
	uint256 constant LIQUIDATION_BONUS_START_BIT_POSITION = 32;
	uint256 constant RESERVE_DECIMALS_START_BIT_POSITION = 48;
	uint256 constant IS_ACTIVE_START_BIT_POSITION = 56;
	uint256 constant IS_FROZEN_START_BIT_POSITION = 57;
	uint256 constant BORROWING_ENABLED_START_BIT_POSITION = 58;
	uint256 constant STABLE_BORROWING_ENABLED_START_BIT_POSITION = 59;
	uint256 constant RESERVE_FACTOR_START_BIT_POSITION = 64;

	///@custom:borrow-and-supply-caps
	uint256 internal constant BORROW_CAP_START_BIT_POSITION = 80;
	uint256 internal constant SUPPLY_CAP_START_BIT_POSITION = 116;

	uint256 constant MAX_VALID_LTV = 65535;
	uint256 constant MAX_VALID_LIQUIDATION_THRESHOLD = 65535;
	uint256 constant MAX_VALID_LIQUIDATION_BONUS = 65535;
	uint256 constant MAX_VALID_DECIMALS = 255;
	uint256 constant MAX_VALID_RESERVE_FACTOR = 65535;

	///@custom:borrow-and-supply-caps
	uint256 internal constant MAX_VALID_BORROW_CAP = 68719476735;
	uint256 internal constant MAX_VALID_SUPPLY_CAP = 68719476735;

	/**
	 * @dev Sets the Loan to Value of the reserve
	 * @param self The reserve configuration
	 * @param ltv the new ltv
	 **/
	function setLtv(DataTypes.ReserveConfigurationMap memory self, uint256 ltv) internal pure {
		require(ltv <= MAX_VALID_LTV, Errors.RC_INVALID_LTV);

		self.data = (self.data & LTV_MASK) | ltv;
	}

	/**
	 * @dev Gets the Loan to Value of the reserve
	 * @param self The reserve configuration
	 * @return The loan to value
	 **/
	function getLtv(DataTypes.ReserveConfigurationMap storage self) internal view returns (uint256) {
		return self.data & ~LTV_MASK;
	}

	/**
	 * @dev Sets the liquidation threshold of the reserve
	 * @param self The reserve configuration
	 * @param threshold The new liquidation threshold
	 **/
	function setLiquidationThreshold(DataTypes.ReserveConfigurationMap memory self, uint256 threshold) internal pure {
		require(threshold <= MAX_VALID_LIQUIDATION_THRESHOLD, Errors.RC_INVALID_LIQ_THRESHOLD);

		self.data = (self.data & LIQUIDATION_THRESHOLD_MASK) | (threshold << LIQUIDATION_THRESHOLD_START_BIT_POSITION);
	}

	/**
	 * @dev Gets the liquidation threshold of the reserve
	 * @param self The reserve configuration
	 * @return The liquidation threshold
	 **/
	function getLiquidationThreshold(DataTypes.ReserveConfigurationMap storage self) internal view returns (uint256) {
		return (self.data & ~LIQUIDATION_THRESHOLD_MASK) >> LIQUIDATION_THRESHOLD_START_BIT_POSITION;
	}

	/**
	 * @dev Sets the liquidation bonus of the reserve
	 * @param self The reserve configuration
	 * @param bonus The new liquidation bonus
	 **/
	function setLiquidationBonus(DataTypes.ReserveConfigurationMap memory self, uint256 bonus) internal pure {
		require(bonus <= MAX_VALID_LIQUIDATION_BONUS, Errors.RC_INVALID_LIQ_BONUS);

		self.data = (self.data & LIQUIDATION_BONUS_MASK) | (bonus << LIQUIDATION_BONUS_START_BIT_POSITION);
	}

	/**
	 * @dev Gets the liquidation bonus of the reserve
	 * @param self The reserve configuration
	 * @return The liquidation bonus
	 **/
	function getLiquidationBonus(DataTypes.ReserveConfigurationMap storage self) internal view returns (uint256) {
		return (self.data & ~LIQUIDATION_BONUS_MASK) >> LIQUIDATION_BONUS_START_BIT_POSITION;
	}

	/**
	 * @dev Sets the decimals of the underlying asset of the reserve
	 * @param self The reserve configuration
	 * @param decimals The decimals
	 **/
	function setDecimals(DataTypes.ReserveConfigurationMap memory self, uint256 decimals) internal pure {
		require(decimals <= MAX_VALID_DECIMALS, Errors.RC_INVALID_DECIMALS);

		self.data = (self.data & DECIMALS_MASK) | (decimals << RESERVE_DECIMALS_START_BIT_POSITION);
	}

	/**
	 * @dev Gets the decimals of the underlying asset of the reserve
	 * @param self The reserve configuration
	 * @return The decimals of the asset
	 **/
	function getDecimals(DataTypes.ReserveConfigurationMap storage self) internal view returns (uint256) {
		return (self.data & ~DECIMALS_MASK) >> RESERVE_DECIMALS_START_BIT_POSITION;
	}

	/**
	 * @dev Sets the active state of the reserve
	 * @param self The reserve configuration
	 * @param active The active state
	 **/
	function setActive(DataTypes.ReserveConfigurationMap memory self, bool active) internal pure {
		self.data = (self.data & ACTIVE_MASK) | (uint256(active ? 1 : 0) << IS_ACTIVE_START_BIT_POSITION);
	}

	/**
	 * @dev Gets the active state of the reserve
	 * @param self The reserve configuration
	 * @return The active state
	 **/
	function getActive(DataTypes.ReserveConfigurationMap storage self) internal view returns (bool) {
		return (self.data & ~ACTIVE_MASK) != 0;
	}

	/**
	 * @dev Sets the frozen state of the reserve
	 * @param self The reserve configuration
	 * @param frozen The frozen state
	 **/
	function setFrozen(DataTypes.ReserveConfigurationMap memory self, bool frozen) internal pure {
		self.data = (self.data & FROZEN_MASK) | (uint256(frozen ? 1 : 0) << IS_FROZEN_START_BIT_POSITION);
	}

	/**
	 * @dev Gets the frozen state of the reserve
	 * @param self The reserve configuration
	 * @return The frozen state
	 **/
	function getFrozen(DataTypes.ReserveConfigurationMap storage self) internal view returns (bool) {
		return (self.data & ~FROZEN_MASK) != 0;
	}

	/**
	 * @dev Enables or disables borrowing on the reserve
	 * @param self The reserve configuration
	 * @param enabled True if the borrowing needs to be enabled, false otherwise
	 **/
	function setBorrowingEnabled(DataTypes.ReserveConfigurationMap memory self, bool enabled) internal pure {
		self.data = (self.data & BORROWING_MASK) | (uint256(enabled ? 1 : 0) << BORROWING_ENABLED_START_BIT_POSITION);
	}

	/**
	 * @dev Gets the borrowing state of the reserve
	 * @param self The reserve configuration
	 * @return The borrowing state
	 **/
	function getBorrowingEnabled(DataTypes.ReserveConfigurationMap storage self) internal view returns (bool) {
		return (self.data & ~BORROWING_MASK) != 0;
	}

	/**
	 * @dev Enables or disables stable rate borrowing on the reserve
	 * @param self The reserve configuration
	 * @param enabled True if the stable rate borrowing needs to be enabled, false otherwise
	 **/
	function setStableRateBorrowingEnabled(DataTypes.ReserveConfigurationMap memory self, bool enabled) internal pure {
		self.data =
			(self.data & STABLE_BORROWING_MASK) |
			(uint256(enabled ? 1 : 0) << STABLE_BORROWING_ENABLED_START_BIT_POSITION);
	}

	/**
	 * @dev Gets the stable rate borrowing state of the reserve
	 * @param self The reserve configuration
	 * @return The stable rate borrowing state
	 **/
	function getStableRateBorrowingEnabled(
		DataTypes.ReserveConfigurationMap storage self
	) internal view returns (bool) {
		return (self.data & ~STABLE_BORROWING_MASK) != 0;
	}

	/**
	 * @dev Sets the reserve factor of the reserve
	 * @param self The reserve configuration
	 * @param reserveFactor The reserve factor
	 **/
	function setReserveFactor(DataTypes.ReserveConfigurationMap memory self, uint256 reserveFactor) internal pure {
		require(reserveFactor <= MAX_VALID_RESERVE_FACTOR, Errors.RC_INVALID_RESERVE_FACTOR);

		self.data = (self.data & RESERVE_FACTOR_MASK) | (reserveFactor << RESERVE_FACTOR_START_BIT_POSITION);
	}

	/**
	 * @dev Gets the reserve factor of the reserve
	 * @param self The reserve configuration
	 * @return The reserve factor
	 **/
	function getReserveFactor(DataTypes.ReserveConfigurationMap storage self) internal view returns (uint256) {
		return (self.data & ~RESERVE_FACTOR_MASK) >> RESERVE_FACTOR_START_BIT_POSITION;
	}

	/**
	 * @notice Sets the borrow cap of the reserve
	 * @param self The reserve configuration
	 * @param borrowCap The borrow cap
	 * @custom:borrow-and-supply-caps
	 */
	function setBorrowCap(DataTypes.ReserveConfigurationMap memory self, uint256 borrowCap) internal pure {
		require(borrowCap <= MAX_VALID_BORROW_CAP, Errors.INVALID_BORROW_CAP);

		self.data = (self.data & BORROW_CAP_MASK) | (borrowCap << BORROW_CAP_START_BIT_POSITION);
	}

	/**
	 * @notice Gets the borrow cap of the reserve
	 * @param self The reserve configuration
	 * @return The borrow cap
	 * @custom:borrow-and-supply-caps
	 */
	function getBorrowCap(DataTypes.ReserveConfigurationMap memory self) internal pure returns (uint256) {
		return (self.data & ~BORROW_CAP_MASK) >> BORROW_CAP_START_BIT_POSITION;
	}

	/**
	 * @notice Sets the supply cap of the reserve
	 * @param self The reserve configuration
	 * @param supplyCap The supply cap
	 * @custom:borrow-and-supply-caps
	 */
	function setSupplyCap(DataTypes.ReserveConfigurationMap memory self, uint256 supplyCap) internal pure {
		require(supplyCap <= MAX_VALID_SUPPLY_CAP, Errors.INVALID_SUPPLY_CAP);

		self.data = (self.data & SUPPLY_CAP_MASK) | (supplyCap << SUPPLY_CAP_START_BIT_POSITION);
	}

	/**
	 * @notice Gets the supply cap of the reserve
	 * @param self The reserve configuration
	 * @return The supply cap
	 * @custom:borrow-and-supply-caps
	 */
	function getSupplyCap(DataTypes.ReserveConfigurationMap memory self) internal pure returns (uint256) {
		return (self.data & ~SUPPLY_CAP_MASK) >> SUPPLY_CAP_START_BIT_POSITION;
	}

	/**
	 * @dev Gets the configuration flags of the reserve
	 * @param self The reserve configuration
	 * @return The state flags representing active, frozen, borrowing enabled, stableRateBorrowing enabled
	 **/
	function getFlags(DataTypes.ReserveConfigurationMap storage self) internal view returns (bool, bool, bool, bool) {
		uint256 dataLocal = self.data;

		return (
			(dataLocal & ~ACTIVE_MASK) != 0,
			(dataLocal & ~FROZEN_MASK) != 0,
			(dataLocal & ~BORROWING_MASK) != 0,
			(dataLocal & ~STABLE_BORROWING_MASK) != 0
		);
	}

	/**
	 * @dev Gets the configuration paramters of the reserve
	 * @param self The reserve configuration
	 * @return The state params representing ltv, liquidation threshold, liquidation bonus, the reserve decimals
	 **/
	function getParams(
		DataTypes.ReserveConfigurationMap storage self
	) internal view returns (uint256, uint256, uint256, uint256, uint256) {
		uint256 dataLocal = self.data;

		return (
			dataLocal & ~LTV_MASK,
			(dataLocal & ~LIQUIDATION_THRESHOLD_MASK) >> LIQUIDATION_THRESHOLD_START_BIT_POSITION,
			(dataLocal & ~LIQUIDATION_BONUS_MASK) >> LIQUIDATION_BONUS_START_BIT_POSITION,
			(dataLocal & ~DECIMALS_MASK) >> RESERVE_DECIMALS_START_BIT_POSITION,
			(dataLocal & ~RESERVE_FACTOR_MASK) >> RESERVE_FACTOR_START_BIT_POSITION
		);
	}

	/**
	 * @dev Gets the configuration paramters of the reserve from a memory object
	 * @param self The reserve configuration
	 * @return The state params representing ltv, liquidation threshold, liquidation bonus, the reserve decimals
	 **/
	function getParamsMemory(
		DataTypes.ReserveConfigurationMap memory self
	) internal pure returns (uint256, uint256, uint256, uint256, uint256) {
		return (
			self.data & ~LTV_MASK,
			(self.data & ~LIQUIDATION_THRESHOLD_MASK) >> LIQUIDATION_THRESHOLD_START_BIT_POSITION,
			(self.data & ~LIQUIDATION_BONUS_MASK) >> LIQUIDATION_BONUS_START_BIT_POSITION,
			(self.data & ~DECIMALS_MASK) >> RESERVE_DECIMALS_START_BIT_POSITION,
			(self.data & ~RESERVE_FACTOR_MASK) >> RESERVE_FACTOR_START_BIT_POSITION
		);
	}

	/**
	 * @dev Gets the configuration flags of the reserve from a memory object
	 * @param self The reserve configuration
	 * @return The state flags representing active, frozen, borrowing enabled, stableRateBorrowing enabled
	 **/
	function getFlagsMemory(
		DataTypes.ReserveConfigurationMap memory self
	) internal pure returns (bool, bool, bool, bool) {
		return (
			(self.data & ~ACTIVE_MASK) != 0,
			(self.data & ~FROZEN_MASK) != 0,
			(self.data & ~BORROWING_MASK) != 0,
			(self.data & ~STABLE_BORROWING_MASK) != 0
		);
	}
}

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

import {Errors} from "../helpers/Errors.sol";
import {DataTypes} from "../types/DataTypes.sol";

/**
 * @title UserConfiguration library
 * @author Aave
 * @notice Implements the bitmap logic to handle the user configuration
 */
library UserConfiguration {
	uint256 internal constant BORROWING_MASK = 0x5555555555555555555555555555555555555555555555555555555555555555;

	/**
	 * @dev Sets if the user is borrowing the reserve identified by reserveIndex
	 * @param self The configuration object
	 * @param reserveIndex The index of the reserve in the bitmap
	 * @param borrowing True if the user is borrowing the reserve, false otherwise
	 **/
	function setBorrowing(DataTypes.UserConfigurationMap storage self, uint256 reserveIndex, bool borrowing) internal {
		require(reserveIndex < 128, Errors.UL_INVALID_INDEX);
		self.data = (self.data & ~(1 << (reserveIndex * 2))) | (uint256(borrowing ? 1 : 0) << (reserveIndex * 2));
	}

	/**
	 * @dev Sets if the user is using as collateral the reserve identified by reserveIndex
	 * @param self The configuration object
	 * @param reserveIndex The index of the reserve in the bitmap
	 * @param usingAsCollateral True if the user is usin the reserve as collateral, false otherwise
	 **/
	function setUsingAsCollateral(
		DataTypes.UserConfigurationMap storage self,
		uint256 reserveIndex,
		bool usingAsCollateral
	) internal {
		require(reserveIndex < 128, Errors.UL_INVALID_INDEX);
		self.data =
			(self.data & ~(1 << (reserveIndex * 2 + 1))) |
			(uint256(usingAsCollateral ? 1 : 0) << (reserveIndex * 2 + 1));
	}

	/**
	 * @dev Used to validate if a user has been using the reserve for borrowing or as collateral
	 * @param self The configuration object
	 * @param reserveIndex The index of the reserve in the bitmap
	 * @return True if the user has been using a reserve for borrowing or as collateral, false otherwise
	 **/
	function isUsingAsCollateralOrBorrowing(
		DataTypes.UserConfigurationMap memory self,
		uint256 reserveIndex
	) internal pure returns (bool) {
		require(reserveIndex < 128, Errors.UL_INVALID_INDEX);
		return (self.data >> (reserveIndex * 2)) & 3 != 0;
	}

	/**
	 * @dev Used to validate if a user has been using the reserve for borrowing
	 * @param self The configuration object
	 * @param reserveIndex The index of the reserve in the bitmap
	 * @return True if the user has been using a reserve for borrowing, false otherwise
	 **/
	function isBorrowing(
		DataTypes.UserConfigurationMap memory self,
		uint256 reserveIndex
	) internal pure returns (bool) {
		require(reserveIndex < 128, Errors.UL_INVALID_INDEX);
		return (self.data >> (reserveIndex * 2)) & 1 != 0;
	}

	/**
	 * @dev Used to validate if a user has been using the reserve as collateral
	 * @param self The configuration object
	 * @param reserveIndex The index of the reserve in the bitmap
	 * @return True if the user has been using a reserve as collateral, false otherwise
	 **/
	function isUsingAsCollateral(
		DataTypes.UserConfigurationMap memory self,
		uint256 reserveIndex
	) internal pure returns (bool) {
		require(reserveIndex < 128, Errors.UL_INVALID_INDEX);
		return (self.data >> (reserveIndex * 2 + 1)) & 1 != 0;
	}

	/**
	 * @dev Used to validate if a user has been borrowing from any reserve
	 * @param self The configuration object
	 * @return True if the user has been borrowing any reserve, false otherwise
	 **/
	function isBorrowingAny(DataTypes.UserConfigurationMap memory self) internal pure returns (bool) {
		return self.data & BORROWING_MASK != 0;
	}

	/**
	 * @dev Used to validate if a user has not been using any reserve
	 * @param self The configuration object
	 * @return True if the user has been borrowing any reserve, false otherwise
	 **/
	function isEmpty(DataTypes.UserConfigurationMap memory self) internal pure returns (bool) {
		return self.data == 0;
	}
}

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

import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IWETH} from "../interfaces/IWETH.sol";
import {IWETHGateway} from "../interfaces/IWETHGateway.sol";
import {ILendingPool} from "../interfaces/ILendingPool.sol";
import {IAToken} from "../interfaces/IAToken.sol";
import {ReserveConfiguration} from "./libraries/configuration/ReserveConfiguration.sol";
import {UserConfiguration} from "./libraries/configuration/UserConfiguration.sol";
import {Helpers} from "./libraries/helpers/Helpers.sol";
import {DataTypes} from "./libraries/types/DataTypes.sol";

contract WETHGateway is IWETHGateway, Ownable {
	using ReserveConfiguration for DataTypes.ReserveConfigurationMap;
	using UserConfiguration for DataTypes.UserConfigurationMap;

	IWETH internal immutable WETH;

	mapping(address => bool) public authorizedLendingPools;

	error NotAuthorized();

	event LendingPoolAuthorized(address indexed lendingPool);
	event LendingPoolRevoked(address indexed lendingPool);

	modifier onlyAuthorizedLendingPools(address lendingPool) {
		if (!authorizedLendingPools[lendingPool]) {
			revert NotAuthorized();
		}
		_;
	}

	/**
	 * @dev Sets the WETH address and the LendingPoolAddressesProvider address. Infinite approves lending pool.
	 * @param weth Address of the Wrapped Ether contract
	 **/
	constructor(address weth) {
		WETH = IWETH(weth);
	}

	/**
	 * @dev Authorizes a lending pool to interact with the WETH contract.
	 * @param lendingPool address of the lending pool to authorize

	 */
	function authorizeLendingPool(address lendingPool) external onlyOwner {
		authorizedLendingPools[lendingPool] = true;
		WETH.approve(lendingPool, type(uint256).max);
		emit LendingPoolAuthorized(lendingPool);
	}

	/**
	 * @dev Revokes a lending pool to interact with the WETH contract.
	 * @param lendingPool address of the lending pool to revoke
	 */
	function revokeLendingPool(address lendingPool) external onlyOwner {
		authorizedLendingPools[lendingPool] = false;
		WETH.approve(lendingPool, 0);
		emit LendingPoolRevoked(lendingPool);
	}

	/**
	 * @dev deposits WETH into the reserve, using native ETH. A corresponding amount of the overlying asset (aTokens)
	 * is minted.
	 * @param lendingPool address of the targeted underlying lending pool
	 * @param onBehalfOf address of the user who will receive the aTokens representing the deposit
	 * @param referralCode integrators are assigned a referral code and can potentially receive rewards.
	 **/
	function depositETH(
		address lendingPool,
		address onBehalfOf,
		uint16 referralCode
	) external payable onlyAuthorizedLendingPools(lendingPool) {
		WETH.deposit{value: msg.value}();
		ILendingPool(lendingPool).deposit(address(WETH), msg.value, onBehalfOf, referralCode);
	}

	function depositETHWithAutoDLP(
		address lendingPool,
		address onBehalfOf,
		uint16 referralCode
	) external payable onlyAuthorizedLendingPools(lendingPool) {
		WETH.deposit{value: msg.value}();
		ILendingPool(lendingPool).depositWithAutoDLP(address(WETH), msg.value, onBehalfOf, referralCode);
	}

	/**
	 * @dev withdraws the WETH _reserves of msg.sender.
	 * @param lendingPool address of the targeted underlying lending pool
	 * @param amount amount of aWETH to withdraw and receive native ETH
	 * @param to address of the user who will receive native ETH
	 */
	function withdrawETH(
		address lendingPool,
		uint256 amount,
		address to
	) external onlyAuthorizedLendingPools(lendingPool) {
		IAToken aWETH = IAToken(ILendingPool(lendingPool).getReserveData(address(WETH)).aTokenAddress);
		uint256 userBalance = aWETH.balanceOf(msg.sender);
		uint256 amountToWithdraw = amount;

		// if amount is equal to uint256(-1), the user wants to redeem everything
		if (amount == type(uint256).max) {
			amountToWithdraw = userBalance;
		}
		aWETH.transferFrom(msg.sender, address(this), amountToWithdraw);
		ILendingPool(lendingPool).withdraw(address(WETH), amountToWithdraw, address(this));
		WETH.withdraw(amountToWithdraw);
		_safeTransferETH(to, amountToWithdraw);
	}

	/**
	 * @dev repays a borrow on the WETH reserve, for the specified amount (or for the whole amount, if uint256(-1) is specified).
	 * @param lendingPool address of the targeted underlying lending pool
	 * @param amount the amount to repay, or uint256(-1) if the user wants to repay everything
	 * @param rateMode the rate mode to repay
	 * @param onBehalfOf the address for which msg.sender is repaying
	 */
	function repayETH(
		address lendingPool,
		uint256 amount,
		uint256 rateMode,
		address onBehalfOf
	) external payable onlyAuthorizedLendingPools(lendingPool) {
		(uint256 stableDebt, uint256 variableDebt) = Helpers.getUserCurrentDebtMemory(
			onBehalfOf,
			ILendingPool(lendingPool).getReserveData(address(WETH))
		);

		uint256 paybackAmount = DataTypes.InterestRateMode(rateMode) == DataTypes.InterestRateMode.STABLE
			? stableDebt
			: variableDebt;

		if (amount < paybackAmount) {
			paybackAmount = amount;
		}
		require(msg.value >= paybackAmount, "msg.value is less than repayment amount");
		WETH.deposit{value: paybackAmount}();
		ILendingPool(lendingPool).repay(address(WETH), paybackAmount, rateMode, onBehalfOf);

		// refund remaining dust eth
		if (msg.value > paybackAmount) _safeTransferETH(msg.sender, msg.value - paybackAmount);
	}

	/**
	 * @dev borrow WETH, unwraps to ETH and send both the ETH and DebtTokens to msg.sender, via `approveDelegation` and onBehalf argument in `LendingPool.borrow`.
	 * @param lendingPool address of the targeted underlying lending pool
	 * @param amount the amount of ETH to borrow
	 * @param interesRateMode the interest rate mode
	 * @param referralCode integrators are assigned a referral code and can potentially receive rewards
	 */
	function borrowETH(
		address lendingPool,
		uint256 amount,
		uint256 interesRateMode,
		uint16 referralCode
	) external onlyAuthorizedLendingPools(lendingPool) {
		ILendingPool(lendingPool).borrow(address(WETH), amount, interesRateMode, referralCode, msg.sender);
		WETH.withdraw(amount);
		_safeTransferETH(msg.sender, amount);
	}

	/**
	 * @dev transfer ETH to an address, revert if it fails.
	 * @param to recipient of the transfer
	 * @param value the amount to send
	 */
	function _safeTransferETH(address to, uint256 value) internal {
		(bool success, ) = to.call{value: value}(new bytes(0));
		require(success, "ETH_TRANSFER_FAILED");
	}

	/**
	 * @dev transfer ERC20 from the utility contract, for ERC20 recovery in case of stuck tokens due
	 * direct transfers to the contract address.
	 * @param token token to transfer
	 * @param to recipient of the transfer
	 * @param amount amount to send
	 */
	function emergencyTokenTransfer(address token, address to, uint256 amount) external onlyOwner {
		IERC20(token).transfer(to, amount);
	}

	/**
	 * @dev transfer native Ether from the utility contract, for native Ether recovery in case of stuck Ether
	 * due selfdestructs or transfer ether to pre-computated contract address before deployment.
	 * @param to recipient of the transfer
	 * @param amount amount to send
	 */
	function emergencyEtherTransfer(address to, uint256 amount) external onlyOwner {
		_safeTransferETH(to, amount);
	}

	/**
	 * @dev Get WETH address used by WETHGateway
	 */
	function getWETHAddress() external view returns (address) {
		return address(WETH);
	}

	/**
	 * @dev Only WETH contract is allowed to transfer ETH here. Prevent other addresses to send Ether to this contract.
	 */
	receive() external payable {
		require(msg.sender == address(WETH), "Receive not allowed");
	}

	/**
	 * @dev Revert fallback calls
	 */
	fallback() external payable {
		revert("Fallback not allowed");
	}
}

{
  "compilationTarget": {
    "contracts/mainnet/lending/WETHGateway.sol": "WETHGateway"
  },
  "evmVersion": "london",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs",
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 999999
  },
  "remappings": []
}