Contract Source Code (Solidity Standard Json-Input format)

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pragma solidity ^0.8.21;
pragma experimental ABIEncoderV2;

import {LiquidityCalcs} from "../libraries/liquidityCalcs.sol";
import {LiquiditySlotsLink} from "../libraries/liquiditySlotsLink.sol";

interface IGovernorBravo {
    function _acceptAdmin() external;

    function _setVotingDelay(uint256 newVotingDelay) external;

    function _setVotingPeriod(uint256 newVotingPeriod) external;

    function _acceptAdminOnTimelock() external;

    function _setImplementation(address implementation_) external;

    function propose(
        address[] memory targets,
        uint256[] memory values,
        string[] memory signatures,
        bytes[] memory calldatas,
        string memory description
    ) external returns (uint256);

    function admin() external view returns (address);

    function pendingAdmin() external view returns (address);

    function timelock() external view returns (address);

    function votingDelay() external view returns (uint256);

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

interface ITimelock {
    function acceptAdmin() external;

    function setDelay(uint256 delay_) external;

    function setPendingAdmin(address pendingAdmin_) external;

    function queueTransaction(
        address target,
        uint256 value,
        string memory signature,
        bytes memory data,
        uint256 eta
    ) external returns (bytes32);

    function executeTransaction(
        address target,
        uint256 value,
        string memory signature,
        bytes memory data,
        uint256 eta
    ) external payable returns (bytes memory);

    function pendingAdmin() external view returns (address);

    function admin() external view returns (address);

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

interface AdminModuleStructs {
    struct AddressBool {
        address addr;
        bool value;
    }

    struct AddressUint256 {
        address addr;
        uint256 value;
    }

    struct RateDataV1Params {
        address token;
        uint256 kink;
        uint256 rateAtUtilizationZero;
        uint256 rateAtUtilizationKink;
        uint256 rateAtUtilizationMax;
    }

    struct RateDataV2Params {
        address token;
        uint256 kink1;
        uint256 kink2;
        uint256 rateAtUtilizationZero;
        uint256 rateAtUtilizationKink1;
        uint256 rateAtUtilizationKink2;
        uint256 rateAtUtilizationMax;
    }

    struct TokenConfig {
        address token;
        uint256 fee;
        uint256 threshold;
    }

    struct UserSupplyConfig {
        address user;
        address token;
        uint8 mode;
        uint256 expandPercent;
        uint256 expandDuration;
        uint256 baseWithdrawalLimit;
    }

    struct UserBorrowConfig {
        address user;
        address token;
        uint8 mode;
        uint256 expandPercent;
        uint256 expandDuration;
        uint256 baseDebtCeiling;
        uint256 maxDebtCeiling;
    }
}

interface IFluidLiquidityAdmin {
    /// @notice adds/removes auths. Auths generally could be contracts which can have restricted actions defined on contract.
    ///         auths can be helpful in reducing governance overhead where it's not needed.
    /// @param authsStatus_ array of structs setting allowed status for an address.
    ///                     status true => add auth, false => remove auth
    function updateAuths(
        AdminModuleStructs.AddressBool[] calldata authsStatus_
    ) external;

    /// @notice adds/removes guardians. Only callable by Governance.
    /// @param guardiansStatus_ array of structs setting allowed status for an address.
    ///                         status true => add guardian, false => remove guardian
    function updateGuardians(
        AdminModuleStructs.AddressBool[] calldata guardiansStatus_
    ) external;

    /// @notice changes the revenue collector address (contract that is sent revenue). Only callable by Governance.
    /// @param revenueCollector_  new revenue collector address
    function updateRevenueCollector(address revenueCollector_) external;

    /// @notice changes current status, e.g. for pausing or unpausing all user operations. Only callable by Auths.
    /// @param newStatus_ new status
    ///        status = 2 -> pause, status = 1 -> resume.
    function changeStatus(uint256 newStatus_) external;

    /// @notice                  update tokens rate data version 1. Only callable by Auths.
    /// @param tokensRateData_   array of RateDataV1Params with rate data to set for each token
    function updateRateDataV1s(
        AdminModuleStructs.RateDataV1Params[] calldata tokensRateData_
    ) external;

    /// @notice                  update tokens rate data version 2. Only callable by Auths.
    /// @param tokensRateData_   array of RateDataV2Params with rate data to set for each token
    function updateRateDataV2s(
        AdminModuleStructs.RateDataV2Params[] calldata tokensRateData_
    ) external;

    /// @notice updates token configs: fee charge on borrowers interest & storage update utilization threshold.
    ///         Only callable by Auths.
    /// @param tokenConfigs_ contains token address, fee & utilization threshold
    function updateTokenConfigs(
        AdminModuleStructs.TokenConfig[] calldata tokenConfigs_
    ) external;

    /// @notice updates user classes: 0 is for new protocols, 1 is for established protocols.
    ///         Only callable by Auths.
    /// @param userClasses_ struct array of uint256 value to assign for each user address
    function updateUserClasses(
        AdminModuleStructs.AddressUint256[] calldata userClasses_
    ) external;

    /// @notice sets user supply configs per token basis. Eg: with interest or interest-free and automated limits.
    ///         Only callable by Auths.
    /// @param userSupplyConfigs_ struct array containing user supply config, see `UserSupplyConfig` struct for more info
    function updateUserSupplyConfigs(
        AdminModuleStructs.UserSupplyConfig[] memory userSupplyConfigs_
    ) external;

    /// @notice setting user borrow configs per token basis. Eg: with interest or interest-free and automated limits.
    ///         Only callable by Auths.
    /// @param userBorrowConfigs_ struct array containing user borrow config, see `UserBorrowConfig` struct for more info
    function updateUserBorrowConfigs(
        AdminModuleStructs.UserBorrowConfig[] memory userBorrowConfigs_
    ) external;

    /// @notice pause operations for a particular user in class 0 (class 1 users can't be paused by guardians).
    /// Only callable by Guardians.
    /// @param user_          address of user to pause operations for
    /// @param supplyTokens_  token addresses to pause withdrawals for
    /// @param borrowTokens_  token addresses to pause borrowings for
    function pauseUser(
        address user_,
        address[] calldata supplyTokens_,
        address[] calldata borrowTokens_
    ) external;

    /// @notice unpause operations for a particular user in class 0 (class 1 users can't be paused by guardians).
    /// Only callable by Guardians.
    /// @param user_          address of user to unpause operations for
    /// @param supplyTokens_  token addresses to unpause withdrawals for
    /// @param borrowTokens_  token addresses to unpause borrowings for
    function unpauseUser(
        address user_,
        address[] calldata supplyTokens_,
        address[] calldata borrowTokens_
    ) external;

    /// @notice         collects revenue for tokens to configured revenueCollector address.
    /// @param tokens_  array of tokens to collect revenue for
    /// @dev            Note that this can revert if token balance is < revenueAmount (utilization > 100%)
    function collectRevenue(address[] calldata tokens_) external;

    /// @notice gets the current updated exchange prices for n tokens and updates all prices, rates related data in storage.
    /// @param tokens_ tokens to update exchange prices for
    /// @return supplyExchangePrices_ new supply rates of overall system for each token
    /// @return borrowExchangePrices_ new borrow rates of overall system for each token
    function updateExchangePrices(
        address[] calldata tokens_
    )
        external
        returns (
            uint256[] memory supplyExchangePrices_,
            uint256[] memory borrowExchangePrices_
        );

    function readFromStorage(
        bytes32 slot_
    ) external view returns (uint256 result_);
}

interface FluidVaultFactory {
    /// @notice                         Sets an address as allowed vault deployment logic (`deploymentLogic_`) contract or not.
    ///                                 This function can only be called by the owner.
    /// @param deploymentLogic_         The address of the vault deployment logic contract to be set.
    /// @param allowed_                 A boolean indicating whether the specified address is allowed to deploy new type of vault.
    function setVaultDeploymentLogic(
        address deploymentLogic_,
        bool allowed_
    ) external;

    /// @notice                         Sets an address (`vaultAuth_`) as allowed vault authorization or not for a specific vault (`vault_`).
    ///                                 This function can only be called by the owner.
    /// @param vault_                   The address of the vault for which the authorization is being set.
    /// @param vaultAuth_               The address to be set as vault authorization.
    /// @param allowed_                 A boolean indicating whether the specified address is allowed to update the specific vault config.
    function setVaultAuth(
        address vault_,
        address vaultAuth_,
        bool allowed_
    ) external;

    /// @notice                         Computes the address of a vault based on its given ID (`vaultId_`).
    /// @param vaultId_                 The ID of the vault.
    /// @return vault_                  Returns the computed address of the vault.
    function getVaultAddress(
        uint256 vaultId_
    ) external view returns (address vault_);
}

interface IFluidVaultT1 {
    /// @notice updates the Vault oracle to `newOracle_`. Must implement the FluidOracle interface.
    function updateOracle(address newOracle_) external;

    /// @notice updates the all Vault core settings according to input params.
    /// All input values are expected in 1e2 (1% = 100, 100% = 10_000).
    function updateCoreSettings(
        uint256 supplyRateMagnifier_,
        uint256 borrowRateMagnifier_,
        uint256 collateralFactor_,
        uint256 liquidationThreshold_,
        uint256 liquidationMaxLimit_,
        uint256 withdrawGap_,
        uint256 liquidationPenalty_,
        uint256 borrowFee_
    ) external;

    /// @notice updates the allowed rebalancer to `newRebalancer_`.
    function updateRebalancer(address newRebalancer_) external;

    /// @notice updates the supply rate magnifier to `supplyRateMagnifier_`. Input in 1e2 (1% = 100, 100% = 10_000).
    function updateSupplyRateMagnifier(uint supplyRateMagnifier_) external;

    /// @notice updates the borrow rate magnifier to `borrowRateMagnifier_`. Input in 1e2 (1% = 100, 100% = 10_000).
    function updateBorrowRateMagnifier(uint borrowRateMagnifier_) external;

    /// @notice updates the collateral factor to `collateralFactor_`. Input in 1e2 (1% = 100, 100% = 10_000).
    function updateCollateralFactor(uint collateralFactor_) external;

    /// @notice updates the liquidation threshold to `liquidationThreshold_`. Input in 1e2 (1% = 100, 100% = 10_000).
    function updateLiquidationThreshold(uint liquidationThreshold_) external;

    /// @notice updates the liquidation max limit to `liquidationMaxLimit_`. Input in 1e2 (1% = 100, 100% = 10_000).
    function updateLiquidationMaxLimit(uint liquidationMaxLimit_) external;

    /// @notice updates the withdrawal gap to `withdrawGap_`. Input in 1e2 (1% = 100, 100% = 10_000).
    function updateWithdrawGap(uint withdrawGap_) external;

    /// @notice updates the liquidation penalty to `liquidationPenalty_`. Input in 1e2 (1% = 100, 100% = 10_000).
    function updateLiquidationPenalty(uint liquidationPenalty_) external;

    /// @notice updates the borrow fee to `borrowFee_`. Input in 1e2 (1% = 100, 100% = 10_000).
    function updateBorrowFee(uint borrowFee_) external;
}

interface IFluidReserveContract {
    function isRebalancer(address user) external returns (bool);

    function rebalanceFToken(address protocol_) external;

    function rebalanceVault(address protocol_) external;

    function transferFunds(address token_) external;

    function getProtocolTokens(address protocol_) external;

    function updateAuth(address auth_, bool isAuth_) external;

    function updateRebalancer(address rebalancer_, bool isRebalancer_) external;

    function approve(
        address[] memory protocols_,
        address[] memory tokens_,
        uint256[] memory amounts_
    ) external;

    function revoke(
        address[] memory protocols_,
        address[] memory tokens_
    ) external;
}

interface IFTokenAdmin {
    /// @notice updates the rewards rate model contract.
    ///         Only callable by LendingFactory auths.
    /// @param rewardsRateModel_  the new rewards rate model contract address.
    ///                           can be set to address(0) to set no rewards (to save gas)
    function updateRewards(address rewardsRateModel_) external;

    /// @notice Balances out the difference between fToken supply at Liquidity vs totalAssets().
    ///         Deposits underlying from rebalancer address into Liquidity but doesn't mint any shares
    ///         -> thus making deposit available as rewards.
    ///         Only callable by rebalancer.
    /// @return assets_ amount deposited to Liquidity
    function rebalance() external payable returns (uint256 assets_);

    /// @notice gets the liquidity exchange price of the underlying asset, calculates the updated exchange price (with reward rates)
    ///         and writes those values to storage.
    ///         Callable by anyone.
    /// @return tokenExchangePrice_ exchange price of fToken share to underlying asset
    /// @return liquidityExchangePrice_ exchange price at Liquidity for the underlying asset
    function updateRates()
        external
        returns (uint256 tokenExchangePrice_, uint256 liquidityExchangePrice_);

    /// @notice sends any potentially stuck funds to Liquidity contract. Only callable by LendingFactory auths.
    function rescueFunds(address token_) external;

    /// @notice Updates the rebalancer address (ReserveContract). Only callable by LendingFactory auths.
    function updateRebalancer(address rebalancer_) external;
}

interface IERC20 {
    function allowance(
        address spender,
        address caller
    ) external view returns (uint256);

    function balanceOf(address account) external view returns (uint256);
}

interface FluidDexFactory {
    /// @notice                         Computes the address of a dex based on its given ID (`dexId_`).
    /// @param dexId_                   The ID of the dex.
    /// @return dex_                    Returns the computed address of the dex.
    function getDexAddress(uint256 dexId_) external view returns (address dex_);

    function setDexAuth(address dex_, address dexAuth_, bool allowed_) external;

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

interface IFluidDex {
    /// @param upperThresholdPercent_ in 4 decimals, 10000 = 1%
    /// @param lowerThresholdPercent_ in 4 decimals, 10000 = 1%
    /// @param thresholdShiftTime_ in secs, in how much time the threshold percent should take to shift the ranges
    /// @param shiftTime_ in secs, in how much time the upper config changes should be fully done.
    function updateThresholdPercent(
        uint upperThresholdPercent_,
        uint lowerThresholdPercent_,
        uint thresholdShiftTime_,
        uint shiftTime_
    ) external;

    function updateCenterPriceLimits(
        uint maxCenterPrice_,
        uint minCenterPrice_
    ) external;

    function readFromStorage(
        bytes32 slot_
    ) external view returns (uint256 result_);
}

interface IFluidDexResolver {
    struct Configs {
        bool isSmartCollateralEnabled;
        bool isSmartDebtEnabled;
        uint256 fee;
        uint256 revenueCut;
        uint256 upperRange;
        uint256 lowerRange;
        uint256 upperShiftThreshold;
        uint256 lowerShiftThreshold;
        uint256 shiftingTime;
        address centerPriceAddress;
        address hookAddress;
        uint256 maxCenterPrice;
        uint256 minCenterPrice;
        uint256 utilizationLimitToken0;
        uint256 utilizationLimitToken1;
        uint256 maxSupplyShares;
        uint256 maxBorrowShares;
    }

    function getDexConfigs(
        address dex_
    ) external view returns (Configs memory configs_);
}

interface ILendingRewards {
    function start() external;
}

contract PayloadIGP52 {
    uint256 public constant PROPOSAL_ID = 52;

    address public constant PROPOSER =
        0xA45f7bD6A5Ff45D31aaCE6bCD3d426D9328cea01;
    address public constant PROPOSER_AVO_MULTISIG =
        0x059a94a72451c0ae1Cc1cE4bf0Db52421Bbe8210;
    address public constant PROPOSER_AVO_MULTISIG_2 =
        0x9efdE135CA4832AbF0408c44c6f5f370eB0f35e8;
    address public constant PROPOSER_AVO_MULTISIG_3 =
        0x5C43AAC965ff230AC1cF63e924D0153291D78BaD;

    IGovernorBravo public constant GOVERNOR =
        IGovernorBravo(0x0204Cd037B2ec03605CFdFe482D8e257C765fA1B);
    ITimelock public constant TIMELOCK =
        ITimelock(0x2386DC45AdDed673317eF068992F19421B481F4c);

    address public constant TEAM_MULTISIG =
        0x4F6F977aCDD1177DCD81aB83074855EcB9C2D49e;

    address public immutable ADDRESS_THIS;

    IFluidLiquidityAdmin public constant LIQUIDITY =
        IFluidLiquidityAdmin(0x52Aa899454998Be5b000Ad077a46Bbe360F4e497);
    IFluidReserveContract public constant FLUID_RESERVE =
        IFluidReserveContract(0x264786EF916af64a1DB19F513F24a3681734ce92);

    FluidVaultFactory public constant VAULT_FACTORY =
        FluidVaultFactory(0x324c5Dc1fC42c7a4D43d92df1eBA58a54d13Bf2d);
    FluidDexFactory public constant DEX_FACTORY =
        FluidDexFactory(0x91716C4EDA1Fb55e84Bf8b4c7085f84285c19085);

    address internal constant ETH_ADDRESS =
        0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
    address internal constant wstETH_ADDRESS =
        0x7f39C581F595B53c5cb19bD0b3f8dA6c935E2Ca0;
    address internal constant weETH_ADDRESS =
        0xCd5fE23C85820F7B72D0926FC9b05b43E359b7ee;

    address internal constant USDC_ADDRESS =
        0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48;
    address internal constant USDT_ADDRESS =
        0xdAC17F958D2ee523a2206206994597C13D831ec7;
    address internal constant sUSDe_ADDRESS =
        0x9D39A5DE30e57443BfF2A8307A4256c8797A3497;
    address internal constant sUSDs_ADDRESS =
        0xa3931d71877C0E7a3148CB7Eb4463524FEc27fbD;
    address internal constant USDe_ADDRESS =
        0x4c9EDD5852cd905f086C759E8383e09bff1E68B3;

    address internal constant GHO_ADDRESS =
        0x40D16FC0246aD3160Ccc09B8D0D3A2cD28aE6C2f;

    address internal constant WBTC_ADDRESS =
        0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599;
    address internal constant cbBTC_ADDRESS =
        0xcbB7C0000aB88B473b1f5aFd9ef808440eed33Bf;

    address public constant F_USDT = 0x5C20B550819128074FD538Edf79791733ccEdd18;
    address public constant F_USDC = 0x9Fb7b4477576Fe5B32be4C1843aFB1e55F251B33;

    IFluidDexResolver public constant FLUID_DEX_RESOLVER =
        IFluidDexResolver(0x7af0C11F5c787632e567e6418D74e5832d8FFd4c);

    struct Dex {
        address dex;
        address tokenA;
        address tokenB;
        bool smartCollateral;
        bool smartDebt;
        uint256 baseWithdrawalLimitInUSD;
        uint256 baseBorrowLimitInUSD;
        uint256 maxBorrowLimitInUSD;
    }

    enum TYPE {
        TYPE_2,
        TYPE_3,
        TYPE_4
    }

    struct Vault {
        address vault;
        TYPE vaultType;
        address supplyToken;
        address borrowToken;
        uint256 baseWithdrawalLimitInUSD;
        uint256 baseBorrowLimitInUSD;
        uint256 maxBorrowLimitInUSD;
    }

    constructor() {
        ADDRESS_THIS = address(this);
    }

    function propose(string memory description) external {
        require(
            msg.sender == PROPOSER ||
                msg.sender == TEAM_MULTISIG ||
                address(this) == PROPOSER_AVO_MULTISIG ||
                address(this) == PROPOSER_AVO_MULTISIG_2 ||
                address(PROPOSER_AVO_MULTISIG_3) == PROPOSER_AVO_MULTISIG_3,
            "msg.sender-not-allowed"
        );

        uint256 totalActions = 1;
        address[] memory targets = new address[](totalActions);
        uint256[] memory values = new uint256[](totalActions);
        string[] memory signatures = new string[](totalActions);
        bytes[] memory calldatas = new bytes[](totalActions);

        // Action 1: call executePayload on timelock contract to execute payload related to Fluid.
        targets[0] = address(TIMELOCK);
        values[0] = 0;
        signatures[0] = "executePayload(address,string,bytes)";
        calldatas[0] = abi.encode(ADDRESS_THIS, "execute()", abi.encode());

        uint256 proposedId = GOVERNOR.propose(
            targets,
            values,
            signatures,
            calldatas,
            description
        );

        require(proposedId == PROPOSAL_ID, "PROPOSAL_IS_NOT_SAME");
    }

    function execute() external {
        require(address(this) == address(TIMELOCK), "not-valid-caller");

        // Action 1: Add 0.5M Rewards to fUSDC and fUSDT
        action1();

        // Action 2: Set ETH-weETH dex pool and vault initial limits.
        action2();

        // Action 3: Update GHO, USDC and USDT market rate curve on liquidity.
        action3();
    }

    function verifyProposal() external view {}

    /**
     * |
     * |     Proposal Payload Actions      |
     * |__________________________________
     */

    /// @notice Action 1: Add 0.5M Rewards to fUSDC and fUSDT
    function action1() internal {
        address[] memory protocols = new address[](2);
        address[] memory tokens = new address[](2);
        uint256[] memory amounts = new uint256[](2);

        address REWARDS_ADDRESS = address(
            0x19147A180D271d90dC12Da2BFFC636F54Cf7C241
        );

        {
            /// fUSDC
            IFTokenAdmin(F_USDC).updateRewards(REWARDS_ADDRESS);

            uint256 allowance = IERC20(USDC_ADDRESS).allowance(
                address(FLUID_RESERVE),
                F_USDC
            );

            protocols[0] = F_USDC;
            tokens[0] = USDC_ADDRESS;
            amounts[0] = allowance + (300_000 * 1e6);
        }

        {
            /// fUSDT
            IFTokenAdmin(F_USDT).updateRewards(REWARDS_ADDRESS);

            uint256 allowance = IERC20(USDT_ADDRESS).allowance(
                address(FLUID_RESERVE),
                F_USDT
            );

            protocols[1] = F_USDT;
            tokens[1] = USDT_ADDRESS;
            amounts[1] = allowance + (300_000 * 1e6);
        }

        FLUID_RESERVE.approve(protocols, tokens, amounts);

        {
            ILendingRewards(REWARDS_ADDRESS).start();
        }
    }

    /// @notice Action 2: Set ETH-weETH dex pool and vault initial limits.
    function action2() internal {
        {
            // ETH-weETH
            Dex memory DEX_ETH_WEETH = Dex({
                dex: getDexAddress(9),
                tokenA: ETH_ADDRESS,
                tokenB: weETH_ADDRESS,
                smartCollateral: true,
                smartDebt: false,
                baseWithdrawalLimitInUSD: 50_000, // $50k
                baseBorrowLimitInUSD: 0, // $0
                maxBorrowLimitInUSD: 0 // $0
            });
            setDexLimits(DEX_ETH_WEETH); // Smart Collateral & Smart Debt

            DEX_FACTORY.setDexAuth(getDexAddress(9), TEAM_MULTISIG, true);
        }

        {
            // [TYPE 2] ETH-weETH  | wstETH | Smart collateral & debt
            Vault memory VAULT_wstETH_ETH_AND_wsETH = Vault({
                vault: getVaultAddress(74),
                vaultType: TYPE.TYPE_2,
                supplyToken: address(0),
                borrowToken: wstETH_ADDRESS,
                baseWithdrawalLimitInUSD: 50_000, // $50k
                baseBorrowLimitInUSD: 40_000, // $40k
                maxBorrowLimitInUSD: 50_000 // $50k
            });

            setVaultLimits(VAULT_wstETH_ETH_AND_wsETH); // TYPE_2 => 74

            VAULT_FACTORY.setVaultAuth(
                getVaultAddress(74),
                TEAM_MULTISIG,
                true
            );
        }
    }

    /// @notice Action 3: Update GHO market rate curve on liquidity.
    function action3() internal {
        AdminModuleStructs.RateDataV2Params[]
            memory params_ = new AdminModuleStructs.RateDataV2Params[](1);

        {
            // GHO
            params_[0] = AdminModuleStructs.RateDataV2Params({
                token: GHO_ADDRESS, // GHO
                kink1: 85 * 1e2, // 85%
                kink2: 93 * 1e2, // 93%
                rateAtUtilizationZero: 0, // 0%
                rateAtUtilizationKink1: 8 * 1e2, // 8%
                rateAtUtilizationKink2: 10 * 1e2, // 10%
                rateAtUtilizationMax: 33 * 1e2 // 33%
            });
        }

        LIQUIDITY.updateRateDataV2s(params_);
    }

    /**
     * |
     * |     Proposal Payload Helpers      |
     * |__________________________________
     */
    function getVaultAddress(uint256 vaultId_) public view returns (address) {
        return VAULT_FACTORY.getVaultAddress(vaultId_);
    }

    function getDexAddress(uint256 dexId_) public view returns (address) {
        return DEX_FACTORY.getDexAddress(dexId_);
    }

    struct SupplyProtocolConfig {
        address protocol;
        address supplyToken;
        uint256 expandPercent;
        uint256 expandDuration;
        uint256 baseWithdrawalLimitInUSD;
    }

    struct BorrowProtocolConfig {
        address protocol;
        address borrowToken;
        uint256 expandPercent;
        uint256 expandDuration;
        uint256 baseBorrowLimitInUSD;
        uint256 maxBorrowLimitInUSD;
    }

    function setDexLimits(Dex memory dex_) internal {
        // Smart Collateral
        if (dex_.smartCollateral) {
            SupplyProtocolConfig memory protocolConfigTokenA_ = SupplyProtocolConfig({
                protocol: dex_.dex,
                supplyToken: dex_.tokenA,
                expandPercent: 50 * 1e2, // 50%
                expandDuration: 1 hours, // 1 hour
                baseWithdrawalLimitInUSD: dex_.baseWithdrawalLimitInUSD
            });

            setSupplyProtocolLimits(protocolConfigTokenA_);

            SupplyProtocolConfig memory protocolConfigTokenB_ = SupplyProtocolConfig({
                protocol: dex_.dex,
                supplyToken: dex_.tokenB,
                expandPercent: 50 * 1e2, // 50%
                expandDuration: 1 hours, // 1 hour
                baseWithdrawalLimitInUSD: dex_.baseWithdrawalLimitInUSD
            });

            setSupplyProtocolLimits(protocolConfigTokenB_);
        }

        // Smart Debt
        if (dex_.smartDebt) {
            BorrowProtocolConfig memory protocolConfigTokenA_ = BorrowProtocolConfig({
                protocol: dex_.dex,
                borrowToken: dex_.tokenA,
                expandPercent: 50 * 1e2, // 50%
                expandDuration: 1 hours, // 1 hour
                baseBorrowLimitInUSD: dex_.baseBorrowLimitInUSD,
                maxBorrowLimitInUSD: dex_.maxBorrowLimitInUSD
            });

            setBorrowProtocolLimits(protocolConfigTokenA_);

            BorrowProtocolConfig memory protocolConfigTokenB_ = BorrowProtocolConfig({
                protocol: dex_.dex,
                borrowToken: dex_.tokenB,
                expandPercent: 50 * 1e2, // 50%
                expandDuration: 1 hours, // 1 hour
                baseBorrowLimitInUSD: dex_.baseBorrowLimitInUSD,
                maxBorrowLimitInUSD: dex_.maxBorrowLimitInUSD
            });

            setBorrowProtocolLimits(protocolConfigTokenB_);
        }
    }

    function setSupplyProtocolLimits(
        SupplyProtocolConfig memory protocolConfig_
    ) internal {
        {
            // Supply Limits
            AdminModuleStructs.UserSupplyConfig[]
                memory configs_ = new AdminModuleStructs.UserSupplyConfig[](1);

            configs_[0] = AdminModuleStructs.UserSupplyConfig({
                user: address(protocolConfig_.protocol),
                token: protocolConfig_.supplyToken,
                mode: 1,
                expandPercent: protocolConfig_.expandPercent,
                expandDuration: protocolConfig_.expandDuration,
                baseWithdrawalLimit: getRawAmount(
                    protocolConfig_.supplyToken,
                    0,
                    protocolConfig_.baseWithdrawalLimitInUSD,
                    true
                )
            });

            LIQUIDITY.updateUserSupplyConfigs(configs_);
        }
    }

    function setBorrowProtocolLimits(
        BorrowProtocolConfig memory protocolConfig_
    ) internal {
        {
            // Borrow Limits
            AdminModuleStructs.UserBorrowConfig[]
                memory configs_ = new AdminModuleStructs.UserBorrowConfig[](1);

            configs_[0] = AdminModuleStructs.UserBorrowConfig({
                user: address(protocolConfig_.protocol),
                token: protocolConfig_.borrowToken,
                mode: 1,
                expandPercent: protocolConfig_.expandPercent,
                expandDuration: protocolConfig_.expandDuration,
                baseDebtCeiling: getRawAmount(
                    protocolConfig_.borrowToken,
                    0,
                    protocolConfig_.baseBorrowLimitInUSD,
                    false
                ),
                maxDebtCeiling: getRawAmount(
                    protocolConfig_.borrowToken,
                    0,
                    protocolConfig_.maxBorrowLimitInUSD,
                    false
                )
            });

            LIQUIDITY.updateUserBorrowConfigs(configs_);
        }
    }

    function setVaultLimits(Vault memory vault_) internal {
        if (vault_.vaultType == TYPE.TYPE_3) {
            SupplyProtocolConfig memory protocolConfig_ = SupplyProtocolConfig({
                protocol: vault_.vault,
                supplyToken: vault_.supplyToken,
                expandPercent: 25 * 1e2, // 25%
                expandDuration: 12 hours, // 12 hours
                baseWithdrawalLimitInUSD: vault_.baseWithdrawalLimitInUSD
            });

            setSupplyProtocolLimits(protocolConfig_);
        }

        if (vault_.vaultType == TYPE.TYPE_2) {
            BorrowProtocolConfig memory protocolConfig_ = BorrowProtocolConfig({
                protocol: vault_.vault,
                borrowToken: vault_.borrowToken,
                expandPercent: 20 * 1e2, // 20%
                expandDuration: 12 hours, // 12 hours
                baseBorrowLimitInUSD: vault_.baseBorrowLimitInUSD,
                maxBorrowLimitInUSD: vault_.maxBorrowLimitInUSD
            });

            setBorrowProtocolLimits(protocolConfig_);
        }
    }

    function getRawAmount(
        address token,
        uint256 amount,
        uint256 amountInUSD,
        bool isSupply
    ) public view returns (uint256) {
        if (amount > 0 && amountInUSD > 0) {
            revert("both usd and amount are not zero");
        }
        uint256 exchangePriceAndConfig_ = LIQUIDITY.readFromStorage(
            LiquiditySlotsLink.calculateMappingStorageSlot(
                LiquiditySlotsLink.LIQUIDITY_EXCHANGE_PRICES_MAPPING_SLOT,
                token
            )
        );

        (
            uint256 supplyExchangePrice,
            uint256 borrowExchangePrice
        ) = LiquidityCalcs.calcExchangePrices(exchangePriceAndConfig_);

        uint256 usdPrice = 0;
        uint256 decimals = 18;
        if (token == ETH_ADDRESS) {
            usdPrice = 3_150 * 1e2;
            decimals = 18;
        } else if (token == wstETH_ADDRESS) {
            usdPrice = 3_750 * 1e2;
            decimals = 18;
        } else if (token == weETH_ADDRESS) {
            usdPrice = 3_300 * 1e2;
            decimals = 18;
        } else if (token == cbBTC_ADDRESS || token == WBTC_ADDRESS) {
            usdPrice = 90_000 * 1e2;
            decimals = 8;
        } else if (token == USDC_ADDRESS || token == USDT_ADDRESS) {
            usdPrice = 1 * 1e2;
            decimals = 6;
        } else if (token == sUSDe_ADDRESS) {
            usdPrice = 1.12 * 1e2;
            decimals = 18;
        } else if (token == sUSDs_ADDRESS) {
            usdPrice = 1.12 * 1e2;
            decimals = 18;
        } else if (token == GHO_ADDRESS || token == USDe_ADDRESS) {
            usdPrice = 1 * 1e2;
            decimals = 18;
        } else {
            revert("not-found");
        }

        uint256 exchangePrice = isSupply
            ? supplyExchangePrice
            : borrowExchangePrice;

        if (amount > 0) {
            return (amount * 1e12) / exchangePrice;
        } else {
            return
                (amountInUSD * 1e12 * (10 ** decimals)) /
                ((usdPrice * exchangePrice) / 1e2);
        }
    }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.21;

/// @title library that represents a number in BigNumber(coefficient and exponent) format to store in smaller bits.
/// @notice the number is divided into two parts: a coefficient and an exponent. This comes at a cost of losing some precision
/// at the end of the number because the exponent simply fills it with zeroes. This precision is oftentimes negligible and can
/// result in significant gas cost reduction due to storage space reduction.
/// Also note, a valid big number is as follows: if the exponent is > 0, then coefficient last bits should be occupied to have max precision.
/// @dev roundUp is more like a increase 1, which happens everytime for the same number.
/// roundDown simply sets trailing digits after coefficientSize to zero (floor), only once for the same number.
library BigMathMinified {
    /// @dev constants to use for `roundUp` input param to increase readability
    bool internal constant ROUND_DOWN = false;
    bool internal constant ROUND_UP = true;

    /// @dev converts `normal` number to BigNumber with `exponent` and `coefficient` (or precision).
    /// e.g.:
    /// 5035703444687813576399599 (normal) = (coefficient[32bits], exponent[8bits])[40bits]
    /// 5035703444687813576399599 (decimal) => 10000101010010110100000011111011110010100110100000000011100101001101001101011101111 (binary)
    ///                                     => 10000101010010110100000011111011000000000000000000000000000000000000000000000000000
    ///                                                                        ^-------------------- 51(exponent) -------------- ^
    /// coefficient = 1000,0101,0100,1011,0100,0000,1111,1011               (2236301563)
    /// exponent =                                            0011,0011     (51)
    /// bigNumber =   1000,0101,0100,1011,0100,0000,1111,1011,0011,0011     (572493200179)
    ///
    /// @param normal number which needs to be converted into Big Number
    /// @param coefficientSize at max how many bits of precision there should be (64 = uint64 (64 bits precision))
    /// @param exponentSize at max how many bits of exponent there should be (8 = uint8 (8 bits exponent))
    /// @param roundUp signals if result should be rounded down or up
    /// @return bigNumber converted bigNumber (coefficient << exponent)
    function toBigNumber(
        uint256 normal,
        uint256 coefficientSize,
        uint256 exponentSize,
        bool roundUp
    ) internal pure returns (uint256 bigNumber) {
        assembly {
            let lastBit_
            let number_ := normal
            if gt(number_, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) {
                number_ := shr(0x80, number_)
                lastBit_ := 0x80
            }
            if gt(number_, 0xFFFFFFFFFFFFFFFF) {
                number_ := shr(0x40, number_)
                lastBit_ := add(lastBit_, 0x40)
            }
            if gt(number_, 0xFFFFFFFF) {
                number_ := shr(0x20, number_)
                lastBit_ := add(lastBit_, 0x20)
            }
            if gt(number_, 0xFFFF) {
                number_ := shr(0x10, number_)
                lastBit_ := add(lastBit_, 0x10)
            }
            if gt(number_, 0xFF) {
                number_ := shr(0x8, number_)
                lastBit_ := add(lastBit_, 0x8)
            }
            if gt(number_, 0xF) {
                number_ := shr(0x4, number_)
                lastBit_ := add(lastBit_, 0x4)
            }
            if gt(number_, 0x3) {
                number_ := shr(0x2, number_)
                lastBit_ := add(lastBit_, 0x2)
            }
            if gt(number_, 0x1) {
                lastBit_ := add(lastBit_, 1)
            }
            if gt(number_, 0) {
                lastBit_ := add(lastBit_, 1)
            }
            if lt(lastBit_, coefficientSize) {
                // for throw exception
                lastBit_ := coefficientSize
            }
            let exponent := sub(lastBit_, coefficientSize)
            let coefficient := shr(exponent, normal)
            if and(roundUp, gt(exponent, 0)) {
                // rounding up is only needed if exponent is > 0, as otherwise the coefficient fully holds the original number
                coefficient := add(coefficient, 1)
                if eq(shl(coefficientSize, 1), coefficient) {
                    // case were coefficient was e.g. 111, with adding 1 it became 1000 (in binary) and coefficientSize 3 bits
                    // final coefficient would exceed it's size. -> reduce coefficent to 100 and increase exponent by 1.
                    coefficient := shl(sub(coefficientSize, 1), 1)
                    exponent := add(exponent, 1)
                }
            }
            if iszero(lt(exponent, shl(exponentSize, 1))) {
                // if exponent is >= exponentSize, the normal number is too big to fit within
                // BigNumber with too small sizes for coefficient and exponent
                revert(0, 0)
            }
            bigNumber := shl(exponentSize, coefficient)
            bigNumber := add(bigNumber, exponent)
        }
    }

    /// @dev get `normal` number from `bigNumber`, `exponentSize` and `exponentMask`
    function fromBigNumber(
        uint256 bigNumber,
        uint256 exponentSize,
        uint256 exponentMask
    ) internal pure returns (uint256 normal) {
        assembly {
            let coefficient := shr(exponentSize, bigNumber)
            let exponent := and(bigNumber, exponentMask)
            normal := shl(exponent, coefficient)
        }
    }

    /// @dev gets the most significant bit `lastBit` of a `normal` number (length of given number of binary format).
    /// e.g.
    /// 5035703444687813576399599 = 10000101010010110100000011111011110010100110100000000011100101001101001101011101111
    /// lastBit =                   ^---------------------------------   83   ----------------------------------------^
    function mostSignificantBit(uint256 normal) internal pure returns (uint lastBit) {
        assembly {
            let number_ := normal
            if gt(normal, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF) {
                number_ := shr(0x80, number_)
                lastBit := 0x80
            }
            if gt(number_, 0xFFFFFFFFFFFFFFFF) {
                number_ := shr(0x40, number_)
                lastBit := add(lastBit, 0x40)
            }
            if gt(number_, 0xFFFFFFFF) {
                number_ := shr(0x20, number_)
                lastBit := add(lastBit, 0x20)
            }
            if gt(number_, 0xFFFF) {
                number_ := shr(0x10, number_)
                lastBit := add(lastBit, 0x10)
            }
            if gt(number_, 0xFF) {
                number_ := shr(0x8, number_)
                lastBit := add(lastBit, 0x8)
            }
            if gt(number_, 0xF) {
                number_ := shr(0x4, number_)
                lastBit := add(lastBit, 0x4)
            }
            if gt(number_, 0x3) {
                number_ := shr(0x2, number_)
                lastBit := add(lastBit, 0x2)
            }
            if gt(number_, 0x1) {
                lastBit := add(lastBit, 1)
            }
            if gt(number_, 0) {
                lastBit := add(lastBit, 1)
            }
        }
    }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.21;

library LibsErrorTypes {
    /***********************************|
    |         LiquidityCalcs            | 
    |__________________________________*/

    /// @notice thrown when supply or borrow exchange price is zero at calc token data (token not configured yet)
    uint256 internal constant LiquidityCalcs__ExchangePriceZero = 70001;

    /// @notice thrown when rate data is set to a version that is not implemented
    uint256 internal constant LiquidityCalcs__UnsupportedRateVersion = 70002;

    /// @notice thrown when the calculated borrow rate turns negative. This should never happen.
    uint256 internal constant LiquidityCalcs__BorrowRateNegative = 70003;

    /***********************************|
    |           SafeTransfer            | 
    |__________________________________*/

    /// @notice thrown when safe transfer from for an ERC20 fails
    uint256 internal constant SafeTransfer__TransferFromFailed = 71001;

    /// @notice thrown when safe transfer for an ERC20 fails
    uint256 internal constant SafeTransfer__TransferFailed = 71002;
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.21;

import { LibsErrorTypes as ErrorTypes } from "./errorTypes.sol";
import { LiquiditySlotsLink } from "./liquiditySlotsLink.sol";
import { BigMathMinified } from "./bigMathMinified.sol";

/// @notice implements calculation methods used for Fluid liquidity such as updated exchange prices,
/// borrow rate, withdrawal / borrow limits, revenue amount.
library LiquidityCalcs {
    error FluidLiquidityCalcsError(uint256 errorId_);

    /// @notice emitted if the calculated borrow rate surpassed max borrow rate (16 bits) and was capped at maximum value 65535
    event BorrowRateMaxCap();

    /// @dev constants as from Liquidity variables.sol
    uint256 internal constant EXCHANGE_PRICES_PRECISION = 1e12;

    /// @dev Ignoring leap years
    uint256 internal constant SECONDS_PER_YEAR = 365 days;
    // constants used for BigMath conversion from and to storage
    uint256 internal constant DEFAULT_EXPONENT_SIZE = 8;
    uint256 internal constant DEFAULT_EXPONENT_MASK = 0xFF;

    uint256 internal constant FOUR_DECIMALS = 1e4;
    uint256 internal constant TWELVE_DECIMALS = 1e12;
    uint256 internal constant X14 = 0x3fff;
    uint256 internal constant X15 = 0x7fff;
    uint256 internal constant X16 = 0xffff;
    uint256 internal constant X18 = 0x3ffff;
    uint256 internal constant X24 = 0xffffff;
    uint256 internal constant X33 = 0x1ffffffff;
    uint256 internal constant X64 = 0xffffffffffffffff;

    ///////////////////////////////////////////////////////////////////////////
    //////////                  CALC EXCHANGE PRICES                  /////////
    ///////////////////////////////////////////////////////////////////////////

    /// @dev calculates interest (exchange prices) for a token given its' exchangePricesAndConfig from storage.
    /// @param exchangePricesAndConfig_ exchange prices and config packed uint256 read from storage
    /// @return supplyExchangePrice_ updated supplyExchangePrice
    /// @return borrowExchangePrice_ updated borrowExchangePrice
    function calcExchangePrices(
        uint256 exchangePricesAndConfig_
    ) internal view returns (uint256 supplyExchangePrice_, uint256 borrowExchangePrice_) {
        // Extracting exchange prices
        supplyExchangePrice_ =
            (exchangePricesAndConfig_ >> LiquiditySlotsLink.BITS_EXCHANGE_PRICES_SUPPLY_EXCHANGE_PRICE) &
            X64;
        borrowExchangePrice_ =
            (exchangePricesAndConfig_ >> LiquiditySlotsLink.BITS_EXCHANGE_PRICES_BORROW_EXCHANGE_PRICE) &
            X64;

        if (supplyExchangePrice_ == 0 || borrowExchangePrice_ == 0) {
            revert FluidLiquidityCalcsError(ErrorTypes.LiquidityCalcs__ExchangePriceZero);
        }

        uint256 temp_ = exchangePricesAndConfig_ & X16; // temp_ = borrowRate

        unchecked {
            // last timestamp can not be > current timestamp
            uint256 secondsSinceLastUpdate_ = block.timestamp -
                ((exchangePricesAndConfig_ >> LiquiditySlotsLink.BITS_EXCHANGE_PRICES_LAST_TIMESTAMP) & X33);

            uint256 borrowRatio_ = (exchangePricesAndConfig_ >> LiquiditySlotsLink.BITS_EXCHANGE_PRICES_BORROW_RATIO) &
                X15;
            if (secondsSinceLastUpdate_ == 0 || temp_ == 0 || borrowRatio_ == 1) {
                // if no time passed, borrow rate is 0, or no raw borrowings: no exchange price update needed
                // (if borrowRatio_ == 1 means there is only borrowInterestFree, as first bit is 1 and rest is 0)
                return (supplyExchangePrice_, borrowExchangePrice_);
            }

            // calculate new borrow exchange price.
            // formula borrowExchangePriceIncrease: previous price * borrow rate * secondsSinceLastUpdate_.
            // nominator is max uint112 (uint64 * uint16 * uint32). Divisor can not be 0.
            borrowExchangePrice_ +=
                (borrowExchangePrice_ * temp_ * secondsSinceLastUpdate_) /
                (SECONDS_PER_YEAR * FOUR_DECIMALS);

            // FOR SUPPLY EXCHANGE PRICE:
            // all yield paid by borrowers (in mode with interest) goes to suppliers in mode with interest.
            // formula: previous price * supply rate * secondsSinceLastUpdate_.
            // where supply rate = (borrow rate  - revenueFee%) * ratioSupplyYield. And
            // ratioSupplyYield = utilization * supplyRatio * borrowRatio
            //
            // Example:
            // supplyRawInterest is 80, supplyInterestFree is 20. totalSupply is 100. BorrowedRawInterest is 50.
            // BorrowInterestFree is 10. TotalBorrow is 60. borrow rate 40%, revenueFee 10%.
            // yield is 10 (so half a year must have passed).
            // supplyRawInterest must become worth 89. totalSupply must become 109. BorrowedRawInterest must become 60.
            // borrowInterestFree must still be 10. supplyInterestFree still 20. totalBorrow 70.
            // supplyExchangePrice would have to go from 1 to 1,125 (+ 0.125). borrowExchangePrice from 1 to 1,2 (+0.2).
            // utilization is 60%. supplyRatio = 20 / 80 = 25% (only 80% of lenders receiving yield).
            // borrowRatio = 10 / 50 = 20% (only 83,333% of borrowers paying yield):
            // x of borrowers paying yield = 100% - (20 / (100 + 20)) = 100% - 16.6666666% = 83,333%.
            // ratioSupplyYield = 60% * 83,33333% * (100% + 20%) = 62,5%
            // supplyRate = (40% * (100% - 10%)) * = 36% * 62,5% = 22.5%
            // increase in supplyExchangePrice, assuming 100 as previous price.
            // 100 * 22,5% * 1/2 (half a year) = 0,1125.
            // cross-check supplyRawInterest worth = 80 * 1.1125 = 89. totalSupply worth = 89 + 20.

            // -------------- 1. calculate ratioSupplyYield --------------------------------
            // step1: utilization * supplyRatio (or actually part of lenders receiving yield)

            // temp_ => supplyRatio (in 1e2: 100% = 10_000; 1% = 100 -> max value 16_383)
            // if first bit 0 then ratio is supplyInterestFree / supplyWithInterest (supplyWithInterest is bigger)
            // else ratio is supplyWithInterest / supplyInterestFree (supplyInterestFree is bigger)
            temp_ = (exchangePricesAndConfig_ >> LiquiditySlotsLink.BITS_EXCHANGE_PRICES_SUPPLY_RATIO) & X15;

            if (temp_ == 1) {
                // if no raw supply: no exchange price update needed
                // (if supplyRatio_ == 1 means there is only supplyInterestFree, as first bit is 1 and rest is 0)
                return (supplyExchangePrice_, borrowExchangePrice_);
            }

            // ratioSupplyYield precision is 1e27 as 100% for increased precision when supplyInterestFree > supplyWithInterest
            if (temp_ & 1 == 1) {
                // ratio is supplyWithInterest / supplyInterestFree (supplyInterestFree is bigger)
                temp_ = temp_ >> 1;

                // Note: case where temp_ == 0 (only supplyInterestFree, no yield) already covered by early return
                // in the if statement a little above.

                // based on above example but supplyRawInterest is 20, supplyInterestFree is 80. no fee.
                // supplyRawInterest must become worth 30. totalSupply must become 110.
                // supplyExchangePrice would have to go from 1 to 1,5. borrowExchangePrice from 1 to 1,2.
                // so ratioSupplyYield must come out as 2.5 (250%).
                // supplyRatio would be (20 * 10_000 / 80) = 2500. but must be inverted.
                temp_ = (1e27 * FOUR_DECIMALS) / temp_; // e.g. 1e31 / 2500 = 4e27. (* 1e27 for precision)
                // e.g. 5_000 * (1e27 + 4e27) / 1e27 = 25_000 (=250%).
                temp_ =
                    // utilization * (100% + 100% / supplyRatio)
                    (((exchangePricesAndConfig_ >> LiquiditySlotsLink.BITS_EXCHANGE_PRICES_UTILIZATION) & X14) *
                        (1e27 + temp_)) / // extract utilization (max 16_383 so there is no way this can overflow).
                    (FOUR_DECIMALS);
                // max possible value of temp_ here is 16383 * (1e27 + 1e31) / 1e4 = ~1.64e31
            } else {
                // ratio is supplyInterestFree / supplyWithInterest (supplyWithInterest is bigger)
                temp_ = temp_ >> 1;
                // if temp_ == 0 then only supplyWithInterest => full yield. temp_ is already 0

                // e.g. 5_000 * 10_000 + (20 * 10_000 / 80) / 10_000 = 5000 * 12500 / 10000 = 6250 (=62.5%).
                temp_ =
                    // 1e27 * utilization * (100% + supplyRatio) / 100%
                    (1e27 *
                        ((exchangePricesAndConfig_ >> LiquiditySlotsLink.BITS_EXCHANGE_PRICES_UTILIZATION) & X14) * // extract utilization (max 16_383 so there is no way this can overflow).
                        (FOUR_DECIMALS + temp_)) /
                    (FOUR_DECIMALS * FOUR_DECIMALS);
                // max possible temp_ value: 1e27 * 16383 * 2e4 / 1e8 = 3.2766e27
            }
            // from here temp_ => ratioSupplyYield (utilization * supplyRatio part) scaled by 1e27. max possible value ~1.64e31

            // step2 of ratioSupplyYield: add borrowRatio (only x% of borrowers paying yield)
            if (borrowRatio_ & 1 == 1) {
                // ratio is borrowWithInterest / borrowInterestFree (borrowInterestFree is bigger)
                borrowRatio_ = borrowRatio_ >> 1;
                // borrowRatio_ => x of total bororwers paying yield. scale to 1e27.

                // Note: case where borrowRatio_ == 0 (only borrowInterestFree, no yield) already covered
                // at the beginning of the method by early return if `borrowRatio_ == 1`.

                // based on above example but borrowRawInterest is 10, borrowInterestFree is 50. no fee. borrowRatio = 20%.
                // so only 16.66% of borrowers are paying yield. so the 100% - part of the formula is not needed.
                // x of borrowers paying yield = (borrowRatio / (100 + borrowRatio)) = 16.6666666%
                // borrowRatio_ => x of total bororwers paying yield. scale to 1e27.
                borrowRatio_ = (borrowRatio_ * 1e27) / (FOUR_DECIMALS + borrowRatio_);
                // max value here for borrowRatio_ is (1e31 / (1e4 + 1e4))= 5e26 (= 50% of borrowers paying yield).
            } else {
                // ratio is borrowInterestFree / borrowWithInterest (borrowWithInterest is bigger)
                borrowRatio_ = borrowRatio_ >> 1;

                // borrowRatio_ => x of total bororwers paying yield. scale to 1e27.
                // x of borrowers paying yield = 100% - (borrowRatio / (100 + borrowRatio)) = 100% - 16.6666666% = 83,333%.
                borrowRatio_ = (1e27 - ((borrowRatio_ * 1e27) / (FOUR_DECIMALS + borrowRatio_)));
                // borrowRatio can never be > 100%. so max subtraction can be 100% - 100% / 200%.
                // or if borrowRatio_ is 0 -> 100% - 0. or if borrowRatio_ is 1 -> 100% - 1 / 101.
                // max value here for borrowRatio_ is 1e27 - 0 = 1e27 (= 100% of borrowers paying yield).
            }

            // temp_ => ratioSupplyYield. scaled down from 1e25 = 1% each to normal percent precision 1e2 = 1%.
            // max nominator value is ~1.64e31 * 1e27 = 1.64e58. max result = 1.64e8
            temp_ = (FOUR_DECIMALS * temp_ * borrowRatio_) / 1e54;

            // 2. calculate supply rate
            // temp_ => supply rate (borrow rate  - revenueFee%) * ratioSupplyYield.
            // division part is done in next step to increase precision. (divided by 2x FOUR_DECIMALS, fee + borrowRate)
            // Note that all calculation divisions for supplyExchangePrice are rounded down.
            // Note supply rate can be bigger than the borrowRate, e.g. if there are only few lenders with interest
            // but more suppliers not earning interest.
            temp_ = ((exchangePricesAndConfig_ & X16) * // borrow rate
                temp_ * // ratioSupplyYield
                (FOUR_DECIMALS - ((exchangePricesAndConfig_ >> LiquiditySlotsLink.BITS_EXCHANGE_PRICES_FEE) & X14))); // revenueFee
            // fee can not be > 100%. max possible = 65535 * ~1.64e8 * 1e4 =~1.074774e17.

            // 3. calculate increase in supply exchange price
            supplyExchangePrice_ += ((supplyExchangePrice_ * temp_ * secondsSinceLastUpdate_) /
                (SECONDS_PER_YEAR * FOUR_DECIMALS * FOUR_DECIMALS * FOUR_DECIMALS));
            // max possible nominator = max uint 64 * 1.074774e17 * max uint32 = ~8.52e45. Denominator can not be 0.
        }
    }

    ///////////////////////////////////////////////////////////////////////////
    //////////                     CALC REVENUE                       /////////
    ///////////////////////////////////////////////////////////////////////////

    /// @dev gets the `revenueAmount_` for a token given its' totalAmounts and exchangePricesAndConfig from storage
    /// and the current balance of the Fluid liquidity contract for the token.
    /// @param totalAmounts_ total amounts packed uint256 read from storage
    /// @param exchangePricesAndConfig_ exchange prices and config packed uint256 read from storage
    /// @param liquidityTokenBalance_   current balance of Liquidity contract (IERC20(token_).balanceOf(address(this)))
    /// @return revenueAmount_ collectable revenue amount
    function calcRevenue(
        uint256 totalAmounts_,
        uint256 exchangePricesAndConfig_,
        uint256 liquidityTokenBalance_
    ) internal view returns (uint256 revenueAmount_) {
        // @dev no need to super-optimize this method as it is only used by admin

        // calculate the new exchange prices based on earned interest
        (uint256 supplyExchangePrice_, uint256 borrowExchangePrice_) = calcExchangePrices(exchangePricesAndConfig_);

        // total supply = interest free + with interest converted from raw
        uint256 totalSupply_ = getTotalSupply(totalAmounts_, supplyExchangePrice_);

        if (totalSupply_ > 0) {
            // available revenue: balanceOf(token) + totalBorrowings - totalLendings.
            revenueAmount_ = liquidityTokenBalance_ + getTotalBorrow(totalAmounts_, borrowExchangePrice_);
            // ensure there is no possible case because of rounding etc. where this would revert,
            // explicitly check if >
            revenueAmount_ = revenueAmount_ > totalSupply_ ? revenueAmount_ - totalSupply_ : 0;
            // Note: if utilization > 100% (totalSupply < totalBorrow), then all the amount above 100% utilization
            // can only be revenue.
        } else {
            // if supply is 0, then rest of balance can be withdrawn as revenue so that no amounts get stuck
            revenueAmount_ = liquidityTokenBalance_;
        }
    }

    ///////////////////////////////////////////////////////////////////////////
    //////////                      CALC LIMITS                       /////////
    ///////////////////////////////////////////////////////////////////////////

    /// @dev calculates withdrawal limit before an operate execution:
    /// amount of user supply that must stay supplied (not amount that can be withdrawn).
    /// i.e. if user has supplied 100m and can withdraw 5M, this method returns the 95M, not the withdrawable amount 5M
    /// @param userSupplyData_ user supply data packed uint256 from storage
    /// @param userSupply_ current user supply amount already extracted from `userSupplyData_` and converted from BigMath
    /// @return currentWithdrawalLimit_ current withdrawal limit updated for expansion since last interaction.
    ///         returned value is in raw for with interest mode, normal amount for interest free mode!
    function calcWithdrawalLimitBeforeOperate(
        uint256 userSupplyData_,
        uint256 userSupply_
    ) internal view returns (uint256 currentWithdrawalLimit_) {
        // @dev must support handling the case where timestamp is 0 (config is set but no interactions yet).
        // first tx where timestamp is 0 will enter `if (lastWithdrawalLimit_ == 0)` because lastWithdrawalLimit_ is not set yet.
        // returning max withdrawal allowed, which is not exactly right but doesn't matter because the first interaction must be
        // a deposit anyway. Important is that it would not revert.

        // Note the first time a deposit brings the user supply amount to above the base withdrawal limit, the active limit
        // is the fully expanded limit immediately.

        // extract last set withdrawal limit
        uint256 lastWithdrawalLimit_ = (userSupplyData_ >>
            LiquiditySlotsLink.BITS_USER_SUPPLY_PREVIOUS_WITHDRAWAL_LIMIT) & X64;
        lastWithdrawalLimit_ =
            (lastWithdrawalLimit_ >> DEFAULT_EXPONENT_SIZE) <<
            (lastWithdrawalLimit_ & DEFAULT_EXPONENT_MASK);
        if (lastWithdrawalLimit_ == 0) {
            // withdrawal limit is not activated. Max withdrawal allowed
            return 0;
        }

        uint256 maxWithdrawableLimit_;
        uint256 temp_;
        unchecked {
            // extract max withdrawable percent of user supply and
            // calculate maximum withdrawable amount expandPercentage of user supply at full expansion duration elapsed
            // e.g.: if 10% expandPercentage, meaning 10% is withdrawable after full expandDuration has elapsed.

            // userSupply_ needs to be atleast 1e73 to overflow max limit of ~1e77 in uint256 (no token in existence where this is possible).
            maxWithdrawableLimit_ =
                (((userSupplyData_ >> LiquiditySlotsLink.BITS_USER_SUPPLY_EXPAND_PERCENT) & X14) * userSupply_) /
                FOUR_DECIMALS;

            // time elapsed since last withdrawal limit was set (in seconds)
            // @dev last process timestamp is guaranteed to exist for withdrawal, as a supply must have happened before.
            // last timestamp can not be > current timestamp
            temp_ =
                block.timestamp -
                ((userSupplyData_ >> LiquiditySlotsLink.BITS_USER_SUPPLY_LAST_UPDATE_TIMESTAMP) & X33);
        }
        // calculate withdrawable amount of expandPercent that is elapsed of expandDuration.
        // e.g. if 60% of expandDuration has elapsed, then user should be able to withdraw 6% of user supply, down to 94%.
        // Note: no explicit check for this needed, it is covered by setting minWithdrawalLimit_ if needed.
        temp_ =
            (maxWithdrawableLimit_ * temp_) /
            // extract expand duration: After this, decrement won't happen (user can withdraw 100% of withdraw limit)
            ((userSupplyData_ >> LiquiditySlotsLink.BITS_USER_SUPPLY_EXPAND_DURATION) & X24); // expand duration can never be 0
        // calculate expanded withdrawal limit: last withdrawal limit - withdrawable amount.
        // Note: withdrawable amount here can grow bigger than userSupply if timeElapsed is a lot bigger than expandDuration,
        // which would cause the subtraction `lastWithdrawalLimit_ - withdrawableAmount_` to revert. In that case, set 0
        // which will cause minimum (fully expanded) withdrawal limit to be set in lines below.
        unchecked {
            // underflow explicitly checked & handled
            currentWithdrawalLimit_ = lastWithdrawalLimit_ > temp_ ? lastWithdrawalLimit_ - temp_ : 0;
            // calculate minimum withdrawal limit: minimum amount of user supply that must stay supplied at full expansion.
            // subtraction can not underflow as maxWithdrawableLimit_ is a percentage amount (<=100%) of userSupply_
            temp_ = userSupply_ - maxWithdrawableLimit_;
        }
        // if withdrawal limit is decreased below minimum then set minimum
        // (e.g. when more than expandDuration time has elapsed)
        if (temp_ > currentWithdrawalLimit_) {
            currentWithdrawalLimit_ = temp_;
        }
    }

    /// @dev calculates withdrawal limit after an operate execution:
    /// amount of user supply that must stay supplied (not amount that can be withdrawn).
    /// i.e. if user has supplied 100m and can withdraw 5M, this method returns the 95M, not the withdrawable amount 5M
    /// @param userSupplyData_ user supply data packed uint256 from storage
    /// @param userSupply_ current user supply amount already extracted from `userSupplyData_` and added / subtracted with the executed operate amount
    /// @param newWithdrawalLimit_ current withdrawal limit updated for expansion since last interaction, result from `calcWithdrawalLimitBeforeOperate`
    /// @return withdrawalLimit_ updated withdrawal limit that should be written to storage. returned value is in
    ///                          raw for with interest mode, normal amount for interest free mode!
    function calcWithdrawalLimitAfterOperate(
        uint256 userSupplyData_,
        uint256 userSupply_,
        uint256 newWithdrawalLimit_
    ) internal pure returns (uint256) {
        // temp_ => base withdrawal limit. below this, maximum withdrawals are allowed
        uint256 temp_ = (userSupplyData_ >> LiquiditySlotsLink.BITS_USER_SUPPLY_BASE_WITHDRAWAL_LIMIT) & X18;
        temp_ = (temp_ >> DEFAULT_EXPONENT_SIZE) << (temp_ & DEFAULT_EXPONENT_MASK);

        // if user supply is below base limit then max withdrawals are allowed
        if (userSupply_ < temp_) {
            return 0;
        }
        // temp_ => withdrawal limit expandPercent (is in 1e2 decimals)
        temp_ = (userSupplyData_ >> LiquiditySlotsLink.BITS_USER_SUPPLY_EXPAND_PERCENT) & X14;
        unchecked {
            // temp_ => minimum withdrawal limit: userSupply - max withdrawable limit (userSupply * expandPercent))
            // userSupply_ needs to be atleast 1e73 to overflow max limit of ~1e77 in uint256 (no token in existence where this is possible).
            // subtraction can not underflow as maxWithdrawableLimit_ is a percentage amount (<=100%) of userSupply_
            temp_ = userSupply_ - ((userSupply_ * temp_) / FOUR_DECIMALS);
        }
        // if new (before operation) withdrawal limit is less than minimum limit then set minimum limit.
        // e.g. can happen on new deposits. withdrawal limit is instantly fully expanded in a scenario where
        // increased deposit amount outpaces withrawals.
        if (temp_ > newWithdrawalLimit_) {
            return temp_;
        }
        return newWithdrawalLimit_;
    }

    /// @dev calculates borrow limit before an operate execution:
    /// total amount user borrow can reach (not borrowable amount in current operation).
    /// i.e. if user has borrowed 50M and can still borrow 5M, this method returns the total 55M, not the borrowable amount 5M
    /// @param userBorrowData_ user borrow data packed uint256 from storage
    /// @param userBorrow_ current user borrow amount already extracted from `userBorrowData_`
    /// @return currentBorrowLimit_ current borrow limit updated for expansion since last interaction. returned value is in
    ///                             raw for with interest mode, normal amount for interest free mode!
    function calcBorrowLimitBeforeOperate(
        uint256 userBorrowData_,
        uint256 userBorrow_
    ) internal view returns (uint256 currentBorrowLimit_) {
        // @dev must support handling the case where timestamp is 0 (config is set but no interactions yet) -> base limit.
        // first tx where timestamp is 0 will enter `if (maxExpandedBorrowLimit_ < baseBorrowLimit_)` because `userBorrow_` and thus
        // `maxExpansionLimit_` and thus `maxExpandedBorrowLimit_` is 0 and `baseBorrowLimit_` can not be 0.

        // temp_ = extract borrow expand percent (is in 1e2 decimals)
        uint256 temp_ = (userBorrowData_ >> LiquiditySlotsLink.BITS_USER_BORROW_EXPAND_PERCENT) & X14;

        uint256 maxExpansionLimit_;
        uint256 maxExpandedBorrowLimit_;
        unchecked {
            // calculate max expansion limit: Max amount limit can expand to since last interaction
            // userBorrow_ needs to be atleast 1e73 to overflow max limit of ~1e77 in uint256 (no token in existence where this is possible).
            maxExpansionLimit_ = ((userBorrow_ * temp_) / FOUR_DECIMALS);

            // calculate max borrow limit: Max point limit can increase to since last interaction
            maxExpandedBorrowLimit_ = userBorrow_ + maxExpansionLimit_;
        }

        // currentBorrowLimit_ = extract base borrow limit
        currentBorrowLimit_ = (userBorrowData_ >> LiquiditySlotsLink.BITS_USER_BORROW_BASE_BORROW_LIMIT) & X18;
        currentBorrowLimit_ =
            (currentBorrowLimit_ >> DEFAULT_EXPONENT_SIZE) <<
            (currentBorrowLimit_ & DEFAULT_EXPONENT_MASK);

        if (maxExpandedBorrowLimit_ < currentBorrowLimit_) {
            return currentBorrowLimit_;
        }
        // time elapsed since last borrow limit was set (in seconds)
        unchecked {
            // temp_ = timeElapsed_ (last timestamp can not be > current timestamp)
            temp_ =
                block.timestamp -
                ((userBorrowData_ >> LiquiditySlotsLink.BITS_USER_BORROW_LAST_UPDATE_TIMESTAMP) & X33); // extract last update timestamp
        }

        // currentBorrowLimit_ = expandedBorrowableAmount + extract last set borrow limit
        currentBorrowLimit_ =
            // calculate borrow limit expansion since last interaction for `expandPercent` that is elapsed of `expandDuration`.
            // divisor is extract expand duration (after this, full expansion to expandPercentage happened).
            ((maxExpansionLimit_ * temp_) /
                ((userBorrowData_ >> LiquiditySlotsLink.BITS_USER_BORROW_EXPAND_DURATION) & X24)) + // expand duration can never be 0
            //  extract last set borrow limit
            BigMathMinified.fromBigNumber(
                (userBorrowData_ >> LiquiditySlotsLink.BITS_USER_BORROW_PREVIOUS_BORROW_LIMIT) & X64,
                DEFAULT_EXPONENT_SIZE,
                DEFAULT_EXPONENT_MASK
            );

        // if timeElapsed is bigger than expandDuration, new borrow limit would be > max expansion,
        // so set to `maxExpandedBorrowLimit_` in that case.
        // also covers the case where last process timestamp = 0 (timeElapsed would simply be very big)
        if (currentBorrowLimit_ > maxExpandedBorrowLimit_) {
            currentBorrowLimit_ = maxExpandedBorrowLimit_;
        }
        // temp_ = extract hard max borrow limit. Above this user can never borrow (not expandable above)
        temp_ = (userBorrowData_ >> LiquiditySlotsLink.BITS_USER_BORROW_MAX_BORROW_LIMIT) & X18;
        temp_ = (temp_ >> DEFAULT_EXPONENT_SIZE) << (temp_ & DEFAULT_EXPONENT_MASK);

        if (currentBorrowLimit_ > temp_) {
            currentBorrowLimit_ = temp_;
        }
    }

    /// @dev calculates borrow limit after an operate execution:
    /// total amount user borrow can reach (not borrowable amount in current operation).
    /// i.e. if user has borrowed 50M and can still borrow 5M, this method returns the total 55M, not the borrowable amount 5M
    /// @param userBorrowData_ user borrow data packed uint256 from storage
    /// @param userBorrow_ current user borrow amount already extracted from `userBorrowData_` and added / subtracted with the executed operate amount
    /// @param newBorrowLimit_ current borrow limit updated for expansion since last interaction, result from `calcBorrowLimitBeforeOperate`
    /// @return borrowLimit_ updated borrow limit that should be written to storage.
    ///                      returned value is in raw for with interest mode, normal amount for interest free mode!
    function calcBorrowLimitAfterOperate(
        uint256 userBorrowData_,
        uint256 userBorrow_,
        uint256 newBorrowLimit_
    ) internal pure returns (uint256 borrowLimit_) {
        // temp_ = extract borrow expand percent
        uint256 temp_ = (userBorrowData_ >> LiquiditySlotsLink.BITS_USER_BORROW_EXPAND_PERCENT) & X14; // (is in 1e2 decimals)

        unchecked {
            // borrowLimit_ = calculate maximum borrow limit at full expansion.
            // userBorrow_ needs to be at least 1e73 to overflow max limit of ~1e77 in uint256 (no token in existence where this is possible).
            borrowLimit_ = userBorrow_ + ((userBorrow_ * temp_) / FOUR_DECIMALS);
        }

        // temp_ = extract base borrow limit
        temp_ = (userBorrowData_ >> LiquiditySlotsLink.BITS_USER_BORROW_BASE_BORROW_LIMIT) & X18;
        temp_ = (temp_ >> DEFAULT_EXPONENT_SIZE) << (temp_ & DEFAULT_EXPONENT_MASK);

        if (borrowLimit_ < temp_) {
            // below base limit, borrow limit is always base limit
            return temp_;
        }
        // temp_ = extract hard max borrow limit. Above this user can never borrow (not expandable above)
        temp_ = (userBorrowData_ >> LiquiditySlotsLink.BITS_USER_BORROW_MAX_BORROW_LIMIT) & X18;
        temp_ = (temp_ >> DEFAULT_EXPONENT_SIZE) << (temp_ & DEFAULT_EXPONENT_MASK);

        // make sure fully expanded borrow limit is not above hard max borrow limit
        if (borrowLimit_ > temp_) {
            borrowLimit_ = temp_;
        }
        // if new borrow limit (from before operate) is > max borrow limit, set max borrow limit.
        // (e.g. on a repay shrinking instantly to fully expanded borrow limit from new borrow amount. shrinking is instant)
        if (newBorrowLimit_ > borrowLimit_) {
            return borrowLimit_;
        }
        return newBorrowLimit_;
    }

    ///////////////////////////////////////////////////////////////////////////
    //////////                      CALC RATES                        /////////
    ///////////////////////////////////////////////////////////////////////////

    /// @dev Calculates new borrow rate from utilization for a token
    /// @param rateData_ rate data packed uint256 from storage for the token
    /// @param utilization_ totalBorrow / totalSupply. 1e4 = 100% utilization
    /// @return rate_ rate for that particular token in 1e2 precision (e.g. 5% rate = 500)
    function calcBorrowRateFromUtilization(uint256 rateData_, uint256 utilization_) internal returns (uint256 rate_) {
        // extract rate version: 4 bits (0xF) starting from bit 0
        uint256 rateVersion_ = (rateData_ & 0xF);

        if (rateVersion_ == 1) {
            rate_ = calcRateV1(rateData_, utilization_);
        } else if (rateVersion_ == 2) {
            rate_ = calcRateV2(rateData_, utilization_);
        } else {
            revert FluidLiquidityCalcsError(ErrorTypes.LiquidityCalcs__UnsupportedRateVersion);
        }

        if (rate_ > X16) {
            // hard cap for borrow rate at maximum value 16 bits (65535) to make sure it does not overflow storage space.
            // this is unlikely to ever happen if configs stay within expected levels.
            rate_ = X16;
            // emit event to more easily become aware
            emit BorrowRateMaxCap();
        }
    }

    /// @dev calculates the borrow rate based on utilization for rate data version 1 (with one kink) in 1e2 precision
    /// @param rateData_ rate data packed uint256 from storage for the token
    /// @param utilization_  in 1e2 (100% = 1e4)
    /// @return rate_ rate in 1e2 precision
    function calcRateV1(uint256 rateData_, uint256 utilization_) internal pure returns (uint256 rate_) {
        /// For rate v1 (one kink) ------------------------------------------------------
        /// Next 16  bits =>  4 - 19 => Rate at utilization 0% (in 1e2: 100% = 10_000; 1% = 100 -> max value 65535)
        /// Next 16  bits =>  20- 35 => Utilization at kink1 (in 1e2: 100% = 10_000; 1% = 100 -> max value 65535)
        /// Next 16  bits =>  36- 51 => Rate at utilization kink1 (in 1e2: 100% = 10_000; 1% = 100 -> max value 65535)
        /// Next 16  bits =>  52- 67 => Rate at utilization 100% (in 1e2: 100% = 10_000; 1% = 100 -> max value 65535)
        /// Last 188 bits =>  68-255 => blank, might come in use in future

        // y = mx + c.
        // y is borrow rate
        // x is utilization
        // m = slope (m can also be negative for declining rates)
        // c is constant (c can be negative)

        uint256 y1_;
        uint256 y2_;
        uint256 x1_;
        uint256 x2_;

        // extract kink1: 16 bits (0xFFFF) starting from bit 20
        // kink is in 1e2, same as utilization, so no conversion needed for direct comparison of the two
        uint256 kink1_ = (rateData_ >> LiquiditySlotsLink.BITS_RATE_DATA_V1_UTILIZATION_AT_KINK) & X16;
        if (utilization_ < kink1_) {
            // if utilization is less than kink
            y1_ = (rateData_ >> LiquiditySlotsLink.BITS_RATE_DATA_V1_RATE_AT_UTILIZATION_ZERO) & X16;
            y2_ = (rateData_ >> LiquiditySlotsLink.BITS_RATE_DATA_V1_RATE_AT_UTILIZATION_KINK) & X16;
            x1_ = 0; // 0%
            x2_ = kink1_;
        } else {
            // else utilization is greater than kink
            y1_ = (rateData_ >> LiquiditySlotsLink.BITS_RATE_DATA_V1_RATE_AT_UTILIZATION_KINK) & X16;
            y2_ = (rateData_ >> LiquiditySlotsLink.BITS_RATE_DATA_V1_RATE_AT_UTILIZATION_MAX) & X16;
            x1_ = kink1_;
            x2_ = FOUR_DECIMALS; // 100%
        }

        int256 constant_;
        int256 slope_;
        unchecked {
            // calculating slope with twelve decimal precision. m = (y2 - y1) / (x2 - x1).
            // utilization of x2 can not be <= utilization of x1 (so no underflow or 0 divisor)
            // y is in 1e2 so can not overflow when multiplied with TWELVE_DECIMALS
            slope_ = (int256(y2_ - y1_) * int256(TWELVE_DECIMALS)) / int256((x2_ - x1_));

            // calculating constant at 12 decimal precision. slope is already in 12 decimal hence only multiple with y1. c = y - mx.
            // maximum y1_ value is 65535. 65535 * 1e12 can not overflow int256
            // maximum slope is 65535 - 0 * TWELVE_DECIMALS / 1 = 65535 * 1e12;
            // maximum x1_ is 100% (9_999 actually) => slope_ * x1_ can not overflow int256
            // subtraction most extreme case would be  0 - max value slope_ * x1_ => can not underflow int256
            constant_ = int256(y1_ * TWELVE_DECIMALS) - (slope_ * int256(x1_));

            // calculating new borrow rate
            // - slope_ max value is 65535 * 1e12,
            // - utilization max value is let's say 500% (extreme case where borrow rate increases borrow amount without new supply)
            // - constant max value is 65535 * 1e12
            // so max values are 65535 * 1e12 * 50_000 + 65535 * 1e12 -> 3.2768*10^21, which easily fits int256
            // divisor TWELVE_DECIMALS can not be 0
            slope_ = (slope_ * int256(utilization_)) + constant_; // reusing `slope_` as variable for gas savings
            if (slope_ < 0) {
                revert FluidLiquidityCalcsError(ErrorTypes.LiquidityCalcs__BorrowRateNegative);
            }
            rate_ = uint256(slope_) / TWELVE_DECIMALS;
        }
    }

    /// @dev calculates the borrow rate based on utilization for rate data version 2 (with two kinks) in 1e4 precision
    /// @param rateData_ rate data packed uint256 from storage for the token
    /// @param utilization_  in 1e2 (100% = 1e4)
    /// @return rate_ rate in 1e4 precision
    function calcRateV2(uint256 rateData_, uint256 utilization_) internal pure returns (uint256 rate_) {
        /// For rate v2 (two kinks) -----------------------------------------------------
        /// Next 16  bits =>  4 - 19 => Rate at utilization 0% (in 1e2: 100% = 10_000; 1% = 100 -> max value 65535)
        /// Next 16  bits =>  20- 35 => Utilization at kink1 (in 1e2: 100% = 10_000; 1% = 100 -> max value 65535)
        /// Next 16  bits =>  36- 51 => Rate at utilization kink1 (in 1e2: 100% = 10_000; 1% = 100 -> max value 65535)
        /// Next 16  bits =>  52- 67 => Utilization at kink2 (in 1e2: 100% = 10_000; 1% = 100 -> max value 65535)
        /// Next 16  bits =>  68- 83 => Rate at utilization kink2 (in 1e2: 100% = 10_000; 1% = 100 -> max value 65535)
        /// Next 16  bits =>  84- 99 => Rate at utilization 100% (in 1e2: 100% = 10_000; 1% = 100 -> max value 65535)
        /// Last 156 bits => 100-255 => blank, might come in use in future

        // y = mx + c.
        // y is borrow rate
        // x is utilization
        // m = slope (m can also be negative for declining rates)
        // c is constant (c can be negative)

        uint256 y1_;
        uint256 y2_;
        uint256 x1_;
        uint256 x2_;

        // extract kink1: 16 bits (0xFFFF) starting from bit 20
        // kink is in 1e2, same as utilization, so no conversion needed for direct comparison of the two
        uint256 kink1_ = (rateData_ >> LiquiditySlotsLink.BITS_RATE_DATA_V2_UTILIZATION_AT_KINK1) & X16;
        if (utilization_ < kink1_) {
            // if utilization is less than kink1
            y1_ = (rateData_ >> LiquiditySlotsLink.BITS_RATE_DATA_V2_RATE_AT_UTILIZATION_ZERO) & X16;
            y2_ = (rateData_ >> LiquiditySlotsLink.BITS_RATE_DATA_V2_RATE_AT_UTILIZATION_KINK1) & X16;
            x1_ = 0; // 0%
            x2_ = kink1_;
        } else {
            // extract kink2: 16 bits (0xFFFF) starting from bit 52
            uint256 kink2_ = (rateData_ >> LiquiditySlotsLink.BITS_RATE_DATA_V2_UTILIZATION_AT_KINK2) & X16;
            if (utilization_ < kink2_) {
                // if utilization is less than kink2
                y1_ = (rateData_ >> LiquiditySlotsLink.BITS_RATE_DATA_V2_RATE_AT_UTILIZATION_KINK1) & X16;
                y2_ = (rateData_ >> LiquiditySlotsLink.BITS_RATE_DATA_V2_RATE_AT_UTILIZATION_KINK2) & X16;
                x1_ = kink1_;
                x2_ = kink2_;
            } else {
                // else utilization is greater than kink2
                y1_ = (rateData_ >> LiquiditySlotsLink.BITS_RATE_DATA_V2_RATE_AT_UTILIZATION_KINK2) & X16;
                y2_ = (rateData_ >> LiquiditySlotsLink.BITS_RATE_DATA_V2_RATE_AT_UTILIZATION_MAX) & X16;
                x1_ = kink2_;
                x2_ = FOUR_DECIMALS;
            }
        }

        int256 constant_;
        int256 slope_;
        unchecked {
            // calculating slope with twelve decimal precision. m = (y2 - y1) / (x2 - x1).
            // utilization of x2 can not be <= utilization of x1 (so no underflow or 0 divisor)
            // y is in 1e2 so can not overflow when multiplied with TWELVE_DECIMALS
            slope_ = (int256(y2_ - y1_) * int256(TWELVE_DECIMALS)) / int256((x2_ - x1_));

            // calculating constant at 12 decimal precision. slope is already in 12 decimal hence only multiple with y1. c = y - mx.
            // maximum y1_ value is 65535. 65535 * 1e12 can not overflow int256
            // maximum slope is 65535 - 0 * TWELVE_DECIMALS / 1 = 65535 * 1e12;
            // maximum x1_ is 100% (9_999 actually) => slope_ * x1_ can not overflow int256
            // subtraction most extreme case would be  0 - max value slope_ * x1_ => can not underflow int256
            constant_ = int256(y1_ * TWELVE_DECIMALS) - (slope_ * int256(x1_));

            // calculating new borrow rate
            // - slope_ max value is 65535 * 1e12,
            // - utilization max value is let's say 500% (extreme case where borrow rate increases borrow amount without new supply)
            // - constant max value is 65535 * 1e12
            // so max values are 65535 * 1e12 * 50_000 + 65535 * 1e12 -> 3.2768*10^21, which easily fits int256
            // divisor TWELVE_DECIMALS can not be 0
            slope_ = (slope_ * int256(utilization_)) + constant_; // reusing `slope_` as variable for gas savings
            if (slope_ < 0) {
                revert FluidLiquidityCalcsError(ErrorTypes.LiquidityCalcs__BorrowRateNegative);
            }
            rate_ = uint256(slope_) / TWELVE_DECIMALS;
        }
    }

    /// @dev reads the total supply out of Liquidity packed storage `totalAmounts_` for `supplyExchangePrice_`
    function getTotalSupply(
        uint256 totalAmounts_,
        uint256 supplyExchangePrice_
    ) internal pure returns (uint256 totalSupply_) {
        // totalSupply_ => supplyInterestFree
        totalSupply_ = (totalAmounts_ >> LiquiditySlotsLink.BITS_TOTAL_AMOUNTS_SUPPLY_INTEREST_FREE) & X64;
        totalSupply_ = (totalSupply_ >> DEFAULT_EXPONENT_SIZE) << (totalSupply_ & DEFAULT_EXPONENT_MASK);

        uint256 totalSupplyRaw_ = totalAmounts_ & X64; // no shifting as supplyRaw is first 64 bits
        totalSupplyRaw_ = (totalSupplyRaw_ >> DEFAULT_EXPONENT_SIZE) << (totalSupplyRaw_ & DEFAULT_EXPONENT_MASK);

        // totalSupply = supplyInterestFree + supplyRawInterest normalized from raw
        totalSupply_ += ((totalSupplyRaw_ * supplyExchangePrice_) / EXCHANGE_PRICES_PRECISION);
    }

    /// @dev reads the total borrow out of Liquidity packed storage `totalAmounts_` for `borrowExchangePrice_`
    function getTotalBorrow(
        uint256 totalAmounts_,
        uint256 borrowExchangePrice_
    ) internal pure returns (uint256 totalBorrow_) {
        // totalBorrow_ => borrowInterestFree
        // no & mask needed for borrow interest free as it occupies the last bits in the storage slot
        totalBorrow_ = (totalAmounts_ >> LiquiditySlotsLink.BITS_TOTAL_AMOUNTS_BORROW_INTEREST_FREE);
        totalBorrow_ = (totalBorrow_ >> DEFAULT_EXPONENT_SIZE) << (totalBorrow_ & DEFAULT_EXPONENT_MASK);

        uint256 totalBorrowRaw_ = (totalAmounts_ >> LiquiditySlotsLink.BITS_TOTAL_AMOUNTS_BORROW_WITH_INTEREST) & X64;
        totalBorrowRaw_ = (totalBorrowRaw_ >> DEFAULT_EXPONENT_SIZE) << (totalBorrowRaw_ & DEFAULT_EXPONENT_MASK);

        // totalBorrow = borrowInterestFree + borrowRawInterest normalized from raw
        totalBorrow_ += ((totalBorrowRaw_ * borrowExchangePrice_) / EXCHANGE_PRICES_PRECISION);
    }
}

// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.8.21;

/// @notice library that helps in reading / working with storage slot data of Fluid Liquidity.
/// @dev as all data for Fluid Liquidity is internal, any data must be fetched directly through manual
/// slot reading through this library or, if gas usage is less important, through the FluidLiquidityResolver.
library LiquiditySlotsLink {
    /// @dev storage slot for status at Liquidity
    uint256 internal constant LIQUIDITY_STATUS_SLOT = 1;
    /// @dev storage slot for auths mapping at Liquidity
    uint256 internal constant LIQUIDITY_AUTHS_MAPPING_SLOT = 2;
    /// @dev storage slot for guardians mapping at Liquidity
    uint256 internal constant LIQUIDITY_GUARDIANS_MAPPING_SLOT = 3;
    /// @dev storage slot for user class mapping at Liquidity
    uint256 internal constant LIQUIDITY_USER_CLASS_MAPPING_SLOT = 4;
    /// @dev storage slot for exchangePricesAndConfig mapping at Liquidity
    uint256 internal constant LIQUIDITY_EXCHANGE_PRICES_MAPPING_SLOT = 5;
    /// @dev storage slot for rateData mapping at Liquidity
    uint256 internal constant LIQUIDITY_RATE_DATA_MAPPING_SLOT = 6;
    /// @dev storage slot for totalAmounts mapping at Liquidity
    uint256 internal constant LIQUIDITY_TOTAL_AMOUNTS_MAPPING_SLOT = 7;
    /// @dev storage slot for user supply double mapping at Liquidity
    uint256 internal constant LIQUIDITY_USER_SUPPLY_DOUBLE_MAPPING_SLOT = 8;
    /// @dev storage slot for user borrow double mapping at Liquidity
    uint256 internal constant LIQUIDITY_USER_BORROW_DOUBLE_MAPPING_SLOT = 9;
    /// @dev storage slot for listed tokens array at Liquidity
    uint256 internal constant LIQUIDITY_LISTED_TOKENS_ARRAY_SLOT = 10;

    // --------------------------------
    // @dev stacked uint256 storage slots bits position data for each:

    // ExchangePricesAndConfig
    uint256 internal constant BITS_EXCHANGE_PRICES_BORROW_RATE = 0;
    uint256 internal constant BITS_EXCHANGE_PRICES_FEE = 16;
    uint256 internal constant BITS_EXCHANGE_PRICES_UTILIZATION = 30;
    uint256 internal constant BITS_EXCHANGE_PRICES_UPDATE_THRESHOLD = 44;
    uint256 internal constant BITS_EXCHANGE_PRICES_LAST_TIMESTAMP = 58;
    uint256 internal constant BITS_EXCHANGE_PRICES_SUPPLY_EXCHANGE_PRICE = 91;
    uint256 internal constant BITS_EXCHANGE_PRICES_BORROW_EXCHANGE_PRICE = 155;
    uint256 internal constant BITS_EXCHANGE_PRICES_SUPPLY_RATIO = 219;
    uint256 internal constant BITS_EXCHANGE_PRICES_BORROW_RATIO = 234;

    // RateData:
    uint256 internal constant BITS_RATE_DATA_VERSION = 0;
    // RateData: V1
    uint256 internal constant BITS_RATE_DATA_V1_RATE_AT_UTILIZATION_ZERO = 4;
    uint256 internal constant BITS_RATE_DATA_V1_UTILIZATION_AT_KINK = 20;
    uint256 internal constant BITS_RATE_DATA_V1_RATE_AT_UTILIZATION_KINK = 36;
    uint256 internal constant BITS_RATE_DATA_V1_RATE_AT_UTILIZATION_MAX = 52;
    // RateData: V2
    uint256 internal constant BITS_RATE_DATA_V2_RATE_AT_UTILIZATION_ZERO = 4;
    uint256 internal constant BITS_RATE_DATA_V2_UTILIZATION_AT_KINK1 = 20;
    uint256 internal constant BITS_RATE_DATA_V2_RATE_AT_UTILIZATION_KINK1 = 36;
    uint256 internal constant BITS_RATE_DATA_V2_UTILIZATION_AT_KINK2 = 52;
    uint256 internal constant BITS_RATE_DATA_V2_RATE_AT_UTILIZATION_KINK2 = 68;
    uint256 internal constant BITS_RATE_DATA_V2_RATE_AT_UTILIZATION_MAX = 84;

    // TotalAmounts
    uint256 internal constant BITS_TOTAL_AMOUNTS_SUPPLY_WITH_INTEREST = 0;
    uint256 internal constant BITS_TOTAL_AMOUNTS_SUPPLY_INTEREST_FREE = 64;
    uint256 internal constant BITS_TOTAL_AMOUNTS_BORROW_WITH_INTEREST = 128;
    uint256 internal constant BITS_TOTAL_AMOUNTS_BORROW_INTEREST_FREE = 192;

    // UserSupplyData
    uint256 internal constant BITS_USER_SUPPLY_MODE = 0;
    uint256 internal constant BITS_USER_SUPPLY_AMOUNT = 1;
    uint256 internal constant BITS_USER_SUPPLY_PREVIOUS_WITHDRAWAL_LIMIT = 65;
    uint256 internal constant BITS_USER_SUPPLY_LAST_UPDATE_TIMESTAMP = 129;
    uint256 internal constant BITS_USER_SUPPLY_EXPAND_PERCENT = 162;
    uint256 internal constant BITS_USER_SUPPLY_EXPAND_DURATION = 176;
    uint256 internal constant BITS_USER_SUPPLY_BASE_WITHDRAWAL_LIMIT = 200;
    uint256 internal constant BITS_USER_SUPPLY_IS_PAUSED = 255;

    // UserBorrowData
    uint256 internal constant BITS_USER_BORROW_MODE = 0;
    uint256 internal constant BITS_USER_BORROW_AMOUNT = 1;
    uint256 internal constant BITS_USER_BORROW_PREVIOUS_BORROW_LIMIT = 65;
    uint256 internal constant BITS_USER_BORROW_LAST_UPDATE_TIMESTAMP = 129;
    uint256 internal constant BITS_USER_BORROW_EXPAND_PERCENT = 162;
    uint256 internal constant BITS_USER_BORROW_EXPAND_DURATION = 176;
    uint256 internal constant BITS_USER_BORROW_BASE_BORROW_LIMIT = 200;
    uint256 internal constant BITS_USER_BORROW_MAX_BORROW_LIMIT = 218;
    uint256 internal constant BITS_USER_BORROW_IS_PAUSED = 255;

    // --------------------------------

    /// @notice Calculating the slot ID for Liquidity contract for single mapping at `slot_` for `key_`
    function calculateMappingStorageSlot(uint256 slot_, address key_) internal pure returns (bytes32) {
        return keccak256(abi.encode(key_, slot_));
    }

    /// @notice Calculating the slot ID for Liquidity contract for double mapping at `slot_` for `key1_` and `key2_`
    function calculateDoubleMappingStorageSlot(
        uint256 slot_,
        address key1_,
        address key2_
    ) internal pure returns (bytes32) {
        bytes32 intermediateSlot_ = keccak256(abi.encode(key1_, slot_));
        return keccak256(abi.encode(key2_, intermediateSlot_));
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"uint256","name":"errorId_","type":"uint256"}],"name":"FluidLiquidityCalcsError","type":"error"},{"inputs":[],"name":"ADDRESS_THIS","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"DEX_FACTORY","outputs":[{"internalType":"contract FluidDexFactory","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"FLUID_DEX_RESOLVER","outputs":[{"internalType":"contract IFluidDexResolver","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"FLUID_RESERVE","outputs":[{"internalType":"contract IFluidReserveContract","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"F_USDC","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"F_USDT","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"GOVERNOR","outputs":[{"internalType":"contract IGovernorBravo","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"LIQUIDITY","outputs":[{"internalType":"contract IFluidLiquidityAdmin","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"PROPOSAL_ID","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"PROPOSER","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"PROPOSER_AVO_MULTISIG","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"PROPOSER_AVO_MULTISIG_2","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"PROPOSER_AVO_MULTISIG_3","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"TEAM_MULTISIG","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"TIMELOCK","outputs":[{"internalType":"contract ITimelock","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"VAULT_FACTORY","outputs":[{"internalType":"contract FluidVaultFactory","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"execute","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"dexId_","type":"uint256"}],"name":"getDexAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"amountInUSD","type":"uint256"},{"internalType":"bool","name":"isSupply","type":"bool"}],"name":"getRawAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"vaultId_","type":"uint256"}],"name":"getVaultAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"description","type":"string"}],"name":"propose","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"verifyProposal","outputs":[],"stateMutability":"view","type":"function"}]

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