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// SPDX-License-Identifier: GPL-2.0-or-later
// Gearbox Protocol. Generalized leverage for DeFi protocols
// (c) Gearbox Foundation, 2025.
pragma solidity ^0.8.23;

import {LPPriceFeed} from "../LPPriceFeed.sol";
import {PriceFeedParams} from "../PriceFeedParams.sol";
import {ICurvePool} from "../../interfaces/curve/ICurvePool.sol";
import {WAD} from "@gearbox-protocol/core-v3/contracts/libraries/Constants.sol";

/// @title Curve stable LP price feed
/// @dev For stableswap pools, aggregate is simply the minimum of underlying tokens prices
/// @dev Older pools may be decoupled from their LP token, so constructor accepts both token and pool
contract CurveStableLPPriceFeed is LPPriceFeed {
    uint256 public constant override version = 3_11;
    bytes32 public constant override contractType = "PRICE_FEED::CURVE_STABLE";

    uint16 public immutable nCoins;

    address public immutable priceFeed0;
    uint32 public immutable stalenessPeriod0;
    bool public immutable skipCheck0;

    address public immutable priceFeed1;
    uint32 public immutable stalenessPeriod1;
    bool public immutable skipCheck1;

    address public immutable priceFeed2;
    uint32 public immutable stalenessPeriod2;
    bool public immutable skipCheck2;

    address public immutable priceFeed3;
    uint32 public immutable stalenessPeriod3;
    bool public immutable skipCheck3;

    constructor(
        address _owner,
        uint256 _lowerBound,
        address _token,
        address _pool,
        PriceFeedParams[4] memory priceFeeds
    )
        LPPriceFeed(_owner, _token, _pool) // U:[CRV-S-1]
        nonZeroAddress(priceFeeds[0].priceFeed) // U:[CRV-S-2]
        nonZeroAddress(priceFeeds[1].priceFeed) // U:[CRV-S-2]
    {
        priceFeed0 = priceFeeds[0].priceFeed;
        priceFeed1 = priceFeeds[1].priceFeed;
        priceFeed2 = priceFeeds[2].priceFeed;
        priceFeed3 = priceFeeds[3].priceFeed;

        stalenessPeriod0 = priceFeeds[0].stalenessPeriod;
        stalenessPeriod1 = priceFeeds[1].stalenessPeriod;
        stalenessPeriod2 = priceFeeds[2].stalenessPeriod;
        stalenessPeriod3 = priceFeeds[3].stalenessPeriod;

        nCoins = priceFeed2 == address(0) ? 2 : (priceFeed3 == address(0) ? 3 : 4); // U:[CRV-S-2]

        skipCheck0 = _validatePriceFeedMetadata(priceFeed0, stalenessPeriod0);
        skipCheck1 = _validatePriceFeedMetadata(priceFeed1, stalenessPeriod1);
        skipCheck2 = nCoins > 2 ? _validatePriceFeedMetadata(priceFeed2, stalenessPeriod2) : false;
        skipCheck3 = nCoins > 3 ? _validatePriceFeedMetadata(priceFeed3, stalenessPeriod3) : false;

        _setLimiter(_lowerBound); // U:[CRV-S-1]
    }

    function getAggregatePriceAndTimestamp() public view override returns (int256 answer, uint256 updatedAt) {
        (answer, updatedAt) = _getValidatedPrice(priceFeed0, stalenessPeriod0, skipCheck0); // U:[CRV-S-2]

        (int256 answer2, uint256 updatedAt2) = _getValidatedPrice(priceFeed1, stalenessPeriod1, skipCheck1);
        (answer, updatedAt) = _agg(answer, updatedAt, answer2, updatedAt2); // U:[CRV-S-2]

        if (nCoins > 2) {
            (answer2, updatedAt2) = _getValidatedPrice(priceFeed2, stalenessPeriod2, skipCheck2);
            (answer, updatedAt) = _agg(answer, updatedAt, answer2, updatedAt2); // U:[CRV-S-2]

            if (nCoins > 3) {
                (answer2, updatedAt2) = _getValidatedPrice(priceFeed3, stalenessPeriod3, skipCheck3);
                (answer, updatedAt) = _agg(answer, updatedAt, answer2, updatedAt2); // U:[CRV-S-2]
            }
        }
    }

    function getLPExchangeRate() public view override returns (uint256) {
        return uint256(ICurvePool(lpContract).get_virtual_price()); // U:[CRV-S-1]
    }

    function getScale() public pure override returns (uint256) {
        return WAD; // U:[CRV-S-1]
    }

    function _agg(int256 answer1, uint256 updatedAt1, int256 answer2, uint256 updatedAt2)
        internal
        view
        returns (int256 answer, uint256 updatedAt)
    {
        return (answer1 < answer2 ? answer1 : answer2, updatedAt1 < updatedAt2 ? updatedAt1 : updatedAt2);
    }
}

// SPDX-License-Identifier: GPL-2.0-or-later
// Gearbox Protocol. Generalized leverage for DeFi protocols
// (c) Gearbox Foundation, 2025.
pragma solidity ^0.8.23;

import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";

import {PERCENTAGE_FACTOR} from "@gearbox-protocol/core-v3/contracts/libraries/Constants.sol";
import {PriceFeedValidationTrait} from "../traits/PriceFeedValidationTrait.sol";
import {SanityCheckTrait} from "@gearbox-protocol/core-v3/contracts/traits/SanityCheckTrait.sol";

import {ILPPriceFeed} from "../interfaces/ILPPriceFeed.sol";

/// @dev Window size in bps, used to compute upper bound given lower bound
uint256 constant WINDOW_SIZE = 200;

/// @dev Buffer size in bps, used to compute new lower bound given current exchange rate
uint256 constant BUFFER_SIZE = 100;

/// @title LP price feed
/// @notice Abstract contract for LP token price feeds.
///         It is assumed that the price of an LP token is the product of its exchange rate and some aggregate function
///         of underlying tokens prices. This contract simplifies creation of such price feeds and provides standard
///         validation of the LP token exchange rate that protects against price manipulation.
abstract contract LPPriceFeed is ILPPriceFeed, Ownable, SanityCheckTrait, PriceFeedValidationTrait {
    /// @notice Answer precision (always 8 decimals for USD price feeds)
    uint8 public constant override decimals = 8; // U:[LPPF-2]

    /// @notice Indicates that price oracle can skip checks for this price feed's answers
    bool public constant override skipPriceCheck = true; // U:[LPPF-2]

    /// @notice LP token for which the prices are computed
    address public immutable override lpToken;

    /// @notice LP contract (can be different from LP token)
    address public immutable override lpContract;

    /// @notice Lower bound for the LP token exchange rate
    uint256 public override lowerBound;

    /// @notice Constructor
    /// @param _owner Owner of the price feed that can update exchange rate bounds
    /// @param _lpToken  LP token for which the prices are computed
    /// @param _lpContract LP contract (can be different from LP token)
    /// @dev Derived price feeds must call `_setLimiter` in their constructor after
    ///      initializing all state variables needed for exchange rate calculation
    constructor(address _owner, address _lpToken, address _lpContract)
        nonZeroAddress(_lpToken) // U:[LPPF-1]
        nonZeroAddress(_lpContract) // U:[LPPF-1]
    {
        transferOwnership(_owner); // U:[LPPF-1]
        lpToken = _lpToken; // U:[LPPF-1]
        lpContract = _lpContract; // U:[LPPF-1]
    }

    /// @notice Price feed description
    function description() external view override returns (string memory) {
        return string.concat(ERC20(lpToken).symbol(), " / USD LP price feed"); // U:[LPPF-2]
    }

    /// @notice Serialized price feed parameters
    function serialize() public view virtual override returns (bytes memory) {
        uint256 lb = lowerBound;
        return abi.encode(lpToken, lpContract, lb, _calcUpperBound(lb));
    }

    /// @notice Returns USD price of the LP token with 8 decimals
    function latestRoundData() external view override returns (uint80, int256, uint256, uint256, uint80) {
        uint256 exchangeRate = getLPExchangeRate();
        uint256 lb = lowerBound;
        if (exchangeRate < lb) revert ExchangeRateOutOfBoundsException(); // U:[LPPF-3]

        uint256 ub = _calcUpperBound(lb);
        if (exchangeRate > ub) exchangeRate = ub; // U:[LPPF-3]

        (int256 answer, uint256 updatedAt) = getAggregatePriceAndTimestamp(); // U:[LPPF-3]
        answer = int256((exchangeRate * uint256(answer)) / getScale()); // U:[LPPF-3]
        return (0, answer, 0, updatedAt, 0);
    }

    /// @notice Returns aggregate price of underlying tokens with 8 decimals
    /// @dev Exists for backward compatability
    function getAggregatePrice() external view override returns (int256 answer) {
        (answer,) = getAggregatePriceAndTimestamp();
    }

    /// @notice Upper bound for the LP token exchange rate
    function upperBound() external view returns (uint256) {
        return _calcUpperBound(lowerBound); // U:[LPPF-4]
    }

    /// @notice Returns aggregate price of underlying tokens with 8 decimals
    /// @dev Must be implemented by derived price feeds
    /// @dev `answer` must be positive
    /// @dev `updatedAt` must be the earliest of update timestamps of underlying feeds
    function getAggregatePriceAndTimestamp() public view virtual override returns (int256 answer, uint256 updatedAt);

    /// @notice Returns LP token exchange rate
    /// @dev Must be implemented by derived price feeds
    function getLPExchangeRate() public view virtual override returns (uint256 exchangeRate);

    /// @notice Returns LP token exchange rate scale
    /// @dev Must be implemented by derived price feeds
    function getScale() public view virtual override returns (uint256 scale);

    // ------------- //
    // CONFIGURATION //
    // ------------- //

    /// @notice Sets new lower and upper bounds for the LP token exchange rate
    /// @param newLowerBound New lower bound value
    function setLimiter(uint256 newLowerBound)
        external
        override
        onlyOwner // U:[LPPF-6]
    {
        _setLimiter(newLowerBound); // U:[LPPF-6]
    }

    // --------- //
    // INTERNALS //
    // --------- //

    /// @dev `setLimiter` implementation: sets new bounds, ensures that current value is within them, emits event
    function _setLimiter(uint256 lower) internal {
        if (lower == 0) revert LowerBoundCantBeZeroException(); // U:[LPPF-6]
        uint256 upper = _ensureValueInBounds(getLPExchangeRate(), lower); // U:[LPPF-6]
        lowerBound = lower; // U:[LPPF-6]
        emit SetBounds(lower, upper); // U:[LPPF-6]
    }

    /// @dev Computes upper bound as `_lowerBound * (1 + WINDOW_SIZE)`
    function _calcUpperBound(uint256 _lowerBound) internal pure returns (uint256) {
        return _lowerBound * (PERCENTAGE_FACTOR + WINDOW_SIZE) / PERCENTAGE_FACTOR; // U:[LPPF-4]
    }

    /// @dev Computes lower bound as `exchangeRate * (1 - BUFFER_SIZE)`
    function _calcLowerBound(uint256 exchangeRate) internal pure returns (uint256) {
        return exchangeRate * (PERCENTAGE_FACTOR - BUFFER_SIZE) / PERCENTAGE_FACTOR; // U:[LPPF-6]
    }

    /// @dev Ensures that value is in bounds, returns upper bound computed from lower bound
    function _ensureValueInBounds(uint256 value, uint256 lower) internal pure returns (uint256 upper) {
        if (value < lower) revert ExchangeRateOutOfBoundsException();
        upper = _calcUpperBound(lower);
        if (value > upper) revert ExchangeRateOutOfBoundsException();
    }
}

// SPDX-License-Identifier: MIT
// Gearbox Protocol. Generalized leverage for DeFi protocols
// (c) Gearbox Foundation, 2025.
pragma solidity ^0.8.23;

import {IPriceFeed} from "@gearbox-protocol/core-v3/contracts/interfaces/base/IPriceFeed.sol";

/// @title LP price feed interface
interface ILPPriceFeed is IPriceFeed {
    // ------ //
    // EVENTS //
    // ------ //

    /// @notice Emitted when new LP token exchange rate bounds are set
    event SetBounds(uint256 lowerBound, uint256 upperBound);

    // ------ //
    // ERRORS //
    // ------ //

    /// @notice Thrown when trying to set exchange rate lower bound to zero
    error LowerBoundCantBeZeroException();

    /// @notice Thrown when exchange rate falls below lower bound during price calculation
    ///         or new boudns don't contain exchange rate during bounds update
    error ExchangeRateOutOfBoundsException();

    // ------- //
    // GETTERS //
    // ------- //

    function lpToken() external view returns (address);
    function lpContract() external view returns (address);

    function lowerBound() external view returns (uint256);
    function upperBound() external view returns (uint256);

    function getAggregatePriceAndTimestamp() external view returns (int256 answer, uint256 updatedAt);
    function getAggregatePrice() external view returns (int256 answer);
    function getLPExchangeRate() external view returns (uint256 exchangeRate);
    function getScale() external view returns (uint256 scale);

    // ------------- //
    // CONFIGURATION //
    // ------------- //

    function setLimiter(uint256 newLowerBound) external;
}

// SPDX-License-Identifier: GPL-2.0-or-later
// Gearbox Protocol. Generalized leverage for DeFi protocols
// (c) Gearbox Foundation, 2025.
pragma solidity ^0.8.23;

struct PriceFeedParams {
    address priceFeed;
    uint32 stalenessPeriod;
}

// SPDX-License-Identifier: MIT
// Gearbox Protocol. Generalized leverage for DeFi protocols
// (c) Gearbox Foundation, 2025.
pragma solidity ^0.8.23;

interface ICurvePool {
    function get_virtual_price() external view returns (uint256);

    function price_oracle() external view returns (uint256);

    function price_oracle(uint256 index) external view returns (uint256);
}

// SPDX-License-Identifier: GPL-2.0-or-later
// Gearbox Protocol. Generalized leverage for DeFi protocols
// (c) Gearbox Foundation, 2025.
pragma solidity ^0.8.23;

import {
    AddressIsNotContractException,
    IncorrectParameterException,
    IncorrectPriceException,
    IncorrectPriceFeedException,
    StalePriceException
} from "@gearbox-protocol/core-v3/contracts/interfaces/IExceptions.sol";
import {IPriceFeed} from "@gearbox-protocol/core-v3/contracts/interfaces/base/IPriceFeed.sol";
import {OptionalCall} from "@gearbox-protocol/core-v3/contracts/libraries/OptionalCall.sol";

/// @title Price feed validation trait
abstract contract PriceFeedValidationTrait {
    /// @dev Ensures that price feed's answer is positive and not stale.
    ///      If `skipCheck` is true, only checks that price is non-negative to allow zero price feed to be used.
    function _checkAnswer(int256 price, uint256 updatedAt, uint32 stalenessPeriod, bool skipCheck) internal view {
        if (price < 0 || !skipCheck && price == 0) revert IncorrectPriceException();
        if (!skipCheck && block.timestamp >= updatedAt + stalenessPeriod) revert StalePriceException();
    }

    /// @dev Validates that `priceFeed` is a contract that adheres to Chainlink interface
    /// @dev Reverts if `priceFeed` does not have exactly 8 decimals
    /// @dev Reverts if `stalenessPeriod` is inconsistent with `priceFeed`'s `skipPriceCheck()` flag
    ///      (which is considered to be false if `priceFeed` does not have this function)
    function _validatePriceFeedMetadata(address priceFeed, uint32 stalenessPeriod)
        internal
        view
        returns (bool skipCheck)
    {
        if (priceFeed.code.length == 0) revert AddressIsNotContractException(priceFeed);

        try IPriceFeed(priceFeed).decimals() returns (uint8 _decimals) {
            if (_decimals != 8) revert IncorrectPriceFeedException();
        } catch {
            revert IncorrectPriceFeedException();
        }

        // NOTE: Some external price feeds without `skipPriceCheck` may have a fallback function that changes state,
        // which can cause a `THROW` that burns all gas, or does not change state and instead returns empty data.
        // To handle these cases, we use a special call construction with a strict gas limit.
        (bool success, bytes memory returnData) = OptionalCall.staticCallOptionalSafe({
            target: priceFeed,
            data: abi.encodeWithSelector(IPriceFeed.skipPriceCheck.selector),
            gasAllowance: 10_000
        });
        if (success) skipCheck = abi.decode(returnData, (bool));
        if (skipCheck && stalenessPeriod != 0 || !skipCheck && stalenessPeriod == 0) {
            revert IncorrectParameterException();
        }
    }

    /// @dev Returns answer from a price feed with optional sanity and staleness checks
    function _getValidatedPrice(address priceFeed, uint32 stalenessPeriod, bool skipCheck)
        internal
        view
        returns (int256 answer, uint256 updatedAt)
    {
        (, answer,, updatedAt,) = IPriceFeed(priceFeed).latestRoundData();
        _checkAnswer(answer, updatedAt, stalenessPeriod, skipCheck);
    }
}

// SPDX-License-Identifier: BUSL-1.1
// Gearbox Protocol. Generalized leverage for DeFi protocols
// (c) Gearbox Foundation, 2024.
pragma solidity ^0.8.17;

bytes32 constant AP_GEAR_TOKEN = "GLOBAL::GEAR_TOKEN";
bytes32 constant AP_INSTANCE_MANAGER_PROXY = "INSTANCE_MANAGER_PROXY";
bytes32 constant AP_CROSS_CHAIN_GOVERNANCE_PROXY = "CROSS_CHAIN_GOVERNANCE_PROXY";
bytes32 constant AP_PRICE_FEED_STORE = "PRICE_FEED_STORE";
uint256 constant NO_VERSION_CONTROL = 0;

uint256 constant WAD = 1e18;
uint256 constant RAY = 1e27;
uint16 constant PERCENTAGE_FACTOR = 1e4;

uint256 constant SECONDS_PER_YEAR = 365 days;
uint256 constant EPOCH_LENGTH = 7 days;
uint256 constant FIRST_EPOCH_TIMESTAMP = 1702900800;
uint256 constant EPOCHS_TO_WITHDRAW = 4;

uint8 constant MAX_SANE_ENABLED_TOKENS = 20;
uint256 constant MAX_SANE_EPOCH_LENGTH = 28 days;
uint256 constant MAX_SANE_ACTIVE_BOTS = 5;

uint8 constant MAX_WITHDRAW_FEE = 100;

uint8 constant DEFAULT_LIMIT_PER_BLOCK_MULTIPLIER = 2;

uint8 constant BOT_PERMISSIONS_SET_FLAG = 1;

uint256 constant UNDERLYING_TOKEN_MASK = 1;

address constant INACTIVE_CREDIT_ACCOUNT_ADDRESS = address(1);

// SPDX-License-Identifier: MIT
// Gearbox Protocol. Generalized leverage for DeFi protocols
// (c) Gearbox Foundation, 2024.
pragma solidity ^0.8.17;

// ------- //
// GENERAL //
// ------- //

/// @notice Thrown on attempting to set an important address to zero address
error ZeroAddressException();

/// @notice Thrown when attempting to pass a zero amount to a funding-related operation
error AmountCantBeZeroException();

/// @notice Thrown on incorrect input parameter
error IncorrectParameterException();

/// @notice Thrown when balance is insufficient to perform an operation
error InsufficientBalanceException();

/// @notice Thrown if parameter is out of range
error ValueOutOfRangeException();

/// @notice Thrown when trying to send ETH to a contract that is not allowed to receive ETH directly
error ReceiveIsNotAllowedException();

/// @notice Thrown on attempting to set an EOA as an important contract in the system
error AddressIsNotContractException(address);

/// @notice Thrown on attempting to receive a token that is not a collateral token or was forbidden
error TokenNotAllowedException();

/// @notice Thrown on attempting to add a token that is already in a collateral list
error TokenAlreadyAddedException();

/// @notice Thrown when attempting to use quota-related logic for a token that is not quoted in quota keeper
error TokenIsNotQuotedException();

/// @notice Thrown on attempting to interact with an address that is not a valid target contract
error TargetContractNotAllowedException();

/// @notice Thrown if function is not implemented
error NotImplementedException();

// ------------------ //
// CONTRACTS REGISTER //
// ------------------ //

/// @notice Thrown when an address is expected to be a registered credit manager, but is not
error RegisteredCreditManagerOnlyException();

/// @notice Thrown when an address is expected to be a registered pool, but is not
error RegisteredPoolOnlyException();

// ---------------- //
// ADDRESS PROVIDER //
// ---------------- //

/// @notice Reverts if address key isn't found in address provider
error AddressNotFoundException();

// ----------------- //
// POOL, PQK, GAUGES //
// ----------------- //

/// @notice Thrown by pool-adjacent contracts when a credit manager being connected has a wrong pool address
error IncompatibleCreditManagerException();

/// @notice Thrown when attempting to set an incompatible successor staking contract
error IncompatibleSuccessorException();

/// @notice Thrown when attempting to vote in a non-approved contract
error VotingContractNotAllowedException();

/// @notice Thrown when attempting to unvote more votes than there are
error InsufficientVotesException();

/// @notice Thrown when attempting to borrow more than the second point on a two-point curve
error BorrowingMoreThanU2ForbiddenException();

/// @notice Thrown when a credit manager attempts to borrow more than its limit in the current block, or in general
error CreditManagerCantBorrowException();

/// @notice Thrown when attempting to connect a quota keeper to an incompatible pool
error IncompatiblePoolQuotaKeeperException();

/// @notice Thrown when attempting to connect a gauge to an incompatible pool quota keeper
error IncompatibleGaugeException();

/// @notice Thrown when the quota is outside of min/max bounds
error QuotaIsOutOfBoundsException();

// -------------- //
// CREDIT MANAGER //
// -------------- //

/// @notice Thrown on failing a full collateral check after multicall
error NotEnoughCollateralException();

/// @notice Thrown if an attempt to approve a collateral token to adapter's target contract fails
error AllowanceFailedException();

/// @notice Thrown on attempting to perform an action for a credit account that does not exist
error CreditAccountDoesNotExistException();

/// @notice Thrown on configurator attempting to add more than 255 collateral tokens
error TooManyTokensException();

/// @notice Thrown if more than the maximum number of tokens were enabled on a credit account
error TooManyEnabledTokensException();

/// @notice Thrown when attempting to execute a protocol interaction without active credit account set
error ActiveCreditAccountNotSetException();

/// @notice Thrown when trying to update credit account's debt more than once in the same block
error DebtUpdatedTwiceInOneBlockException();

/// @notice Thrown when trying to repay all debt while having active quotas
error DebtToZeroWithActiveQuotasException();

/// @notice Thrown when a zero-debt account attempts to update quota
error UpdateQuotaOnZeroDebtAccountException();

/// @notice Thrown when attempting to close an account with non-zero debt
error CloseAccountWithNonZeroDebtException();

/// @notice Thrown when value of funds remaining on the account after liquidation is insufficient
error InsufficientRemainingFundsException();

/// @notice Thrown when Credit Facade tries to write over a non-zero active Credit Account
error ActiveCreditAccountOverridenException();

// ------------------- //
// CREDIT CONFIGURATOR //
// ------------------- //

/// @notice Thrown on attempting to use a non-ERC20 contract or an EOA as a token
error IncorrectTokenContractException();

/// @notice Thrown if the newly set LT if zero or greater than the underlying's LT
error IncorrectLiquidationThresholdException();

/// @notice Thrown if borrowing limits are incorrect: minLimit > maxLimit or maxLimit > blockLimit
error IncorrectLimitsException();

/// @notice Thrown if the new expiration date is less than the current expiration date or current timestamp
error IncorrectExpirationDateException();

/// @notice Thrown if a contract returns a wrong credit manager or reverts when trying to retrieve it
error IncompatibleContractException();

/// @notice Thrown if attempting to forbid an adapter that is not registered in the credit manager
error AdapterIsNotRegisteredException();

/// @notice Thrown if new credit configurator's set of allowed adapters differs from the current one
error IncorrectAdaptersSetException();

/// @notice Thrown if attempting to schedule a token's LT ramping that is too short in duration
error RampDurationTooShortException();

/// @notice Thrown if attempting to set liquidation fees such that the sum of premium and fee changes
error InconsistentLiquidationFeesException();

/// @notice Thrown if attempting to set expired liquidation fees such that the sum of premium and fee changes
error InconsistentExpiredLiquidationFeesException();

// ------------- //
// CREDIT FACADE //
// ------------- //

/// @notice Thrown when attempting to perform an action that is forbidden in whitelisted mode
error ForbiddenInWhitelistedModeException();

/// @notice Thrown if credit facade is not expirable, and attempted aciton requires expirability
error NotAllowedWhenNotExpirableException();

/// @notice Thrown if a selector that doesn't match any allowed function is passed to the credit facade in a multicall
error UnknownMethodException(bytes4 selector);

/// @notice Thrown if a liquidator tries to liquidate an account with a health factor above 1
error CreditAccountNotLiquidatableException();

/// @notice Thrown if a liquidator tries to liquidate an account with loss but violates the loss policy
error CreditAccountNotLiquidatableWithLossException();

/// @notice Thrown if too much new debt was taken within a single block
error BorrowedBlockLimitException();

/// @notice Thrown if the new debt principal for a credit account falls outside of borrowing limits
error BorrowAmountOutOfLimitsException();

/// @notice Thrown if a user attempts to open an account via an expired credit facade
error NotAllowedAfterExpirationException();

/// @notice Thrown if expected balances are attempted to be set twice without performing a slippage check
error ExpectedBalancesAlreadySetException();

/// @notice Thrown if attempting to perform a slippage check when excepted balances are not set
error ExpectedBalancesNotSetException();

/// @notice Thrown if balance of at least one token is less than expected during a slippage check
error BalanceLessThanExpectedException(address token);

/// @notice Thrown when trying to perform an action that is forbidden when credit account has enabled forbidden tokens
error ForbiddenTokensException(uint256 forbiddenTokensMask);

/// @notice Thrown when forbidden token quota is increased during the multicall
error ForbiddenTokenQuotaIncreasedException(address token);

/// @notice Thrown when enabled forbidden token balance is increased during the multicall
error ForbiddenTokenBalanceIncreasedException(address token);

/// @notice Thrown when the remaining token balance is increased during the liquidation
error RemainingTokenBalanceIncreasedException(address token);

/// @notice Thrown if `botMulticall` is called by an address that is not approved by account owner or is forbidden
error NotApprovedBotException(address bot);

/// @notice Thrown when attempting to perform a multicall action with no permission for it
error NoPermissionException(uint256 permission);

/// @notice Thrown when attempting to give a bot unexpected permissions
error UnexpectedPermissionsException(uint256 permissions);

/// @notice Thrown when a custom HF parameter lower than 10000 is passed into the full collateral check
error CustomHealthFactorTooLowException();

/// @notice Thrown when submitted collateral hint is not a valid token mask
error InvalidCollateralHintException(uint256 mask);

/// @notice Thrown when trying to seize underlying token during partial liquidation
error UnderlyingIsNotLiquidatableException();

/// @notice Thrown when amount of collateral seized during partial liquidation is less than required
error SeizedLessThanRequiredException(uint256 seizedAmount);

// ------ //
// ACCESS //
// ------ //

/// @notice Thrown on attempting to call an access restricted function not as credit account owner
error CallerNotCreditAccountOwnerException();

/// @notice Thrown on attempting to call an access restricted function not as configurator
error CallerNotConfiguratorException();

/// @notice Thrown on attempting to call an access-restructed function not as account factory
error CallerNotAccountFactoryException();

/// @notice Thrown on attempting to call an access restricted function not as credit manager
error CallerNotCreditManagerException();

/// @notice Thrown on attempting to call an access restricted function not as credit facade
error CallerNotCreditFacadeException();

/// @notice Thrown on attempting to pause a contract without pausable admin rights
error CallerNotPausableAdminException();

/// @notice Thrown on attempting to unpause a contract without unpausable admin rights
error CallerNotUnpausableAdminException();

/// @notice Thrown on attempting to call an access restricted function not as gauge
error CallerNotGaugeException();

/// @notice Thrown on attempting to call an access restricted function not as quota keeper
error CallerNotPoolQuotaKeeperException();

/// @notice Thrown on attempting to call an access restricted function not as voter
error CallerNotVoterException();

/// @notice Thrown on attempting to call an access restricted function not as allowed adapter
error CallerNotAdapterException();

/// @notice Thrown on attempting to call an access restricted function not as migrator
error CallerNotMigratorException();

/// @notice Thrown when an address that is not the designated executor attempts to execute a transaction
error CallerNotExecutorException();

/// @notice Thrown on attempting to call an access restricted function not as veto admin
error CallerNotVetoAdminException();

// -------- //
// BOT LIST //
// -------- //

/// @notice Thrown when attempting to set non-zero permissions for a forbidden bot
error InvalidBotException();

/// @notice Thrown when attempting to set permissions for a bot that don't meet its requirements
error IncorrectBotPermissionsException();

/// @notice Thrown when attempting to set non-zero permissions for too many bots
error TooManyActiveBotsException();

// --------------- //
// ACCOUNT FACTORY //
// --------------- //

/// @notice Thrown when trying to deploy second master credit account for a credit manager
error MasterCreditAccountAlreadyDeployedException();

/// @notice Thrown when trying to rescue funds from a credit account that is currently in use
error CreditAccountIsInUseException();

// ------------ //
// PRICE ORACLE //
// ------------ //

/// @notice Thrown on attempting to set a token price feed to an address that is not a correct price feed
error IncorrectPriceFeedException();

/// @notice Thrown on attempting to interact with a price feed for a token not added to the price oracle
error PriceFeedDoesNotExistException();

/// @notice Thrown when trying to apply an on-demand price update to a non-updatable price feed
error PriceFeedIsNotUpdatableException();

/// @notice Thrown when price feed returns incorrect price for a token
error IncorrectPriceException();

/// @notice Thrown when token's price feed becomes stale
error StalePriceException();

// SPDX-License-Identifier: BUSL-1.1
// Gearbox Protocol. Generalized leverage for DeFi protocols
// (c) Gearbox Foundation, 2024.
pragma solidity ^0.8.17;

/// @title Optional call library
/// @notice Implements a function that calls a contract that may not have an expected selector.
///         Handles the case where the contract has a fallback function that may or may not change state.
library OptionalCall {
    function staticCallOptionalSafe(address target, bytes memory data, uint256 gasAllowance)
        internal
        view
        returns (bool, bytes memory)
    {
        (bool success, bytes memory returnData) = target.staticcall{gas: gasAllowance}(data);
        return returnData.length > 0 ? (success, returnData) : (false, returnData);
    }
}

// SPDX-License-Identifier: BUSL-1.1
// Gearbox Protocol. Generalized leverage for DeFi protocols
// (c) Gearbox Foundation, 2024.
pragma solidity ^0.8.17;

import {ZeroAddressException} from "../interfaces/IExceptions.sol";

/// @title Sanity check trait
abstract contract SanityCheckTrait {
    /// @dev Ensures that passed address is non-zero
    modifier nonZeroAddress(address addr) {
        _revertIfZeroAddress(addr);
        _;
    }

    /// @dev Reverts if address is zero
    function _revertIfZeroAddress(address addr) private pure {
        if (addr == address(0)) revert ZeroAddressException();
    }
}

// SPDX-License-Identifier: MIT
// Gearbox Protocol. Generalized leverage for DeFi protocols
// (c) Gearbox Foundation, 2024.
pragma solidity ^0.8.17;

/// @title Version interface
/// @notice Defines contract version and type
interface IVersion {
    /// @notice Contract version
    function version() external view returns (uint256);

    /// @notice Contract type
    function contractType() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// Gearbox Protocol. Generalized leverage for DeFi protocols
// (c) Gearbox Foundation, 2024.
pragma solidity ^0.8.17;

import {IVersion} from "./IVersion.sol";
import {IStateSerializer} from "./IStateSerializer.sol";

/// @title Price feed interface
/// @notice Interface for Chainlink-like price feeds that can be plugged into Gearbox's price oracle
/// @dev Price feeds must have type `PRICE_FEED::{POSTFIX}`
interface IPriceFeed is IVersion, IStateSerializer {
    /// @notice Whether price feed implements its own staleness and sanity checks
    function skipPriceCheck() external view returns (bool);

    /// @notice Scale decimals of price feed answers
    function decimals() external view returns (uint8);

    /// @notice Price feed description
    function description() external view returns (string memory);

    /// @notice Price feed answer in standard Chainlink format, only `answer` and `updatedAt` fields are used
    function latestRoundData() external view returns (uint80, int256 answer, uint256, uint256 updatedAt, uint80);
}

/// @title Updatable price feed interface
/// @notice Extended version of `IPriceFeed` for pull oracles that allow on-demand updates
interface IUpdatablePriceFeed is IPriceFeed {
    /// @notice Emitted when price is updated
    event UpdatePrice(uint256 price);

    /// @notice Whether price feed is updatable
    function updatable() external view returns (bool);

    /// @notice Performs on-demand price update
    function updatePrice(bytes calldata data) external;
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (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;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

// SPDX-License-Identifier: MIT
// Gearbox Protocol. Generalized leverage for DeFi protocols
// (c) Gearbox Foundation, 2024.
pragma solidity ^0.8.17;

/// @title State serializer interface
/// @notice Generic interface for a contract that can serialize its state into a bytes array
interface IStateSerializer {
    /// @notice Serializes the state of the contract into a bytes array `serializedData`
    function serialize() external view returns (bytes memory serializedData);
}

// 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: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.0;

import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * The default value of {decimals} is 18. To change this, you should override
 * this function so it returns a different value.
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the default value returned by this function, unless
     * it's overridden.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `amount`.
     */
    function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     */
    function _transfer(address from, address to, uint256 amount) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(from, to, amount);

        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
            // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
            // decrementing then incrementing.
            _balances[to] += amount;
        }

        emit Transfer(from, to, amount);

        _afterTokenTransfer(from, to, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        unchecked {
            // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
            _balances[account] += amount;
        }
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
            // Overflow not possible: amount <= accountBalance <= totalSupply.
            _totalSupply -= amount;
        }

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(address owner, address spender, uint256 amount) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `amount`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {}
}

// 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 v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";

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

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

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

{
  "remappings": [
    "@1inch/=lib/@gearbox-protocol/core-v3/lib/@1inch/",
    "@gearbox-protocol/=lib/@gearbox-protocol/",
    "@openzeppelin/=lib/@gearbox-protocol/core-v3/lib/@openzeppelin/",
    "@redstone-finance/=node_modules/@redstone-finance/",
    "@solady/=lib/@solady/src/",
    "ds-test/=lib/@gearbox-protocol/sdk-gov/lib/forge-std/lib/ds-test/src/",
    "erc4626-tests/=lib/@gearbox-protocol/core-v3/lib/@openzeppelin/lib/erc4626-tests/",
    "forge-std/=lib/@gearbox-protocol/core-v3/lib/forge-std/src/"
  ],
  "optimizer": {
    "runs": 1000,
    "enabled": true
  },
  "metadata": {
    "bytecodeHash": "none",
    "useLiteralContent": true
  },
  "evmVersion": "shanghai",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

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-----Decoded View---------------
Arg [0] : _owner (address): 0x74A868AC479EE145029bB80827BB77F7B7c441cB
Arg [1] : _lowerBound (uint256): 1058110142163836797
Arg [2] : _token (address): 0x942644106B073E30D72c2C5D7529D5C296ea91ab
Arg [3] : _pool (address): 0x942644106B073E30D72c2C5D7529D5C296ea91ab
Arg [4] : priceFeeds (tuple[4]): System.Collections.Generic.List`1[Nethereum.ABI.FunctionEncoding.ParameterOutput],System.Collections.Generic.List`1[Nethereum.ABI.FunctionEncoding.ParameterOutput],System.Collections.Generic.List`1[Nethereum.ABI.FunctionEncoding.ParameterOutput],System.Collections.Generic.List`1[Nethereum.ABI.FunctionEncoding.ParameterOutput]

-----Encoded View---------------
12 Constructor Arguments found :
Arg [0] : 00000000000000000000000074a868ac479ee145029bb80827bb77f7b7c441cb
Arg [1] : 0000000000000000000000000000000000000000000000000eaf299174e9df7d
Arg [2] : 000000000000000000000000942644106b073e30d72c2c5d7529d5c296ea91ab
Arg [3] : 000000000000000000000000942644106b073e30d72c2c5d7529d5c296ea91ab
Arg [4] : 0000000000000000000000004ec6a3222fa6fa8c671db3060fdbdbcab94f7bc4
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [6] : 000000000000000000000000e5980273ea70aa2f7982aabc90f607185fbad50f
Arg [7] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [8] : 000000000000000000000000ed861082c8d5f9c469c08e549390457102ddca4a
Arg [9] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [10] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [11] : 0000000000000000000000000000000000000000000000000000000000000000