// File: contracts/BuyerV2.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8;
pragma experimental ABIEncoderV2;

import "./interfaces/dydx/DydxFlashloanBase.sol";
import "./interfaces/dydx/ICallee.sol";
import "./interfaces/IWETH.sol";

contract BuyerV2 is ICallee, DydxFlashloanBase {
    address public constant SEAPORT =
        0x00000000006c3852cbEf3e08E8dF289169EdE581;
    address public constant OPENSEA_CONDUIT =
        0x1E0049783F008A0085193E00003D00cd54003c71;
    address private constant SOLO = 0x1E0447b19BB6EcFdAe1e4AE1694b0C3659614e4e;
    IWETH weth;

    // JUST FOR TESTING - ITS OKAY TO REMOVE ALL OF THESE VARS
    address public seller;
    bytes openseaTransactionData;

    event Log(string message, uint256 val);

    struct MyCustomData {
        address token;
        uint256 repayAmount;
        uint256 amount;
    }

    constructor(IWETH weth_) {
        weth = weth_;
        weth.approve(OPENSEA_CONDUIT, 10e10 ether);
    }

    function initiateFlashLoan(
        address seller_,
        bytes calldata openseaTransactionData_,
        uint256 _amount
    ) external {
        ISoloMargin solo = ISoloMargin(SOLO);
        seller = seller_;
        openseaTransactionData = openseaTransactionData_;

        // Get marketId from token address
        /*
    0	WETH
    1	SAI
    2	USDC
    3	DAI
    */
        uint256 marketId = _getMarketIdFromTokenAddress(SOLO, address(weth));

        // Calculate repay amount (_amount + (2 wei))
        uint256 repayAmount = _getRepaymentAmountInternal(_amount);
        weth.approve(SOLO, repayAmount);

        /*
    1. Withdraw
    2. Call callFunction()
    3. Deposit back
    */

        Actions.ActionArgs[] memory operations = new Actions.ActionArgs[](3);

        operations[0] = _getWithdrawAction(marketId, _amount);
        operations[1] = _getCallAction(
            abi.encode(
                MyCustomData({
                    token: address(weth),
                    repayAmount: repayAmount,
                    amount: _amount
                })
            )
        );
        operations[2] = _getDepositAction(marketId, repayAmount);

        Account.Info[] memory accountInfos = new Account.Info[](1);
        accountInfos[0] = _getAccountInfo();

        solo.operate(accountInfos, operations);
    }

    function callFunction(
        address sender,
        Account.Info memory account,
        bytes memory data
    ) public override {
        require(msg.sender == SOLO, "!solo");
        require(sender == address(this), "!this contract");

        MyCustomData memory mcd = abi.decode(data, (MyCustomData));
        uint256 repayAmount = mcd.repayAmount;
        uint256 amount = mcd.amount;

        uint256 openseaFees = (amount * 250) / 10000;
        uint256 bal = IERC20(mcd.token).balanceOf(address(this));
        require(bal + openseaFees >= repayAmount, "bal < repay");

        // More code here...
        (bool success, ) = SEAPORT.call(openseaTransactionData);
        require(success, "opensea transaction failed");

        // after buying the nft from opensea get the amount from the seller using pre approved manner
        weth.transferFrom(seller, address(this), amount - openseaFees);
    }
}

// File: contracts/interfaces/dydx/DydxFlashloanBase.sol



// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8;
pragma experimental ABIEncoderV2;

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

import "./ISoloMargin.sol";

contract DydxFlashloanBase {
    using SafeMath for uint256;

    // -- Internal Helper functions -- //

    function _getMarketIdFromTokenAddress(address _solo, address token)
        internal
        view
        returns (uint256)
    {
        ISoloMargin solo = ISoloMargin(_solo);

        uint256 numMarkets = solo.getNumMarkets();

        address curToken;
        for (uint256 i = 0; i < numMarkets; i++) {
            curToken = solo.getMarketTokenAddress(i);

            if (curToken == token) {
                return i;
            }
        }

        revert("No marketId found for provided token");
    }

    function _getRepaymentAmountInternal(uint256 amount)
        internal
        pure
        returns (uint256)
    {
        // Needs to be overcollateralize
        // Needs to provide +2 wei to be safe
        return amount.add(2);
    }

    function _getAccountInfo() internal view returns (Account.Info memory) {
        return Account.Info({owner: address(this), number: 1});
    }

    function _getWithdrawAction(uint256 marketId, uint256 amount)
        internal
        view
        returns (Actions.ActionArgs memory)
    {
        return
            Actions.ActionArgs({
                actionType: Actions.ActionType.Withdraw,
                accountId: 0,
                amount: Types.AssetAmount({
                    sign: false,
                    denomination: Types.AssetDenomination.Wei,
                    ref: Types.AssetReference.Delta,
                    value: amount
                }),
                primaryMarketId: marketId,
                secondaryMarketId: 0,
                otherAddress: address(this),
                otherAccountId: 0,
                data: ""
            });
    }

    function _getCallAction(bytes memory data)
        internal
        view
        returns (Actions.ActionArgs memory)
    {
        return
            Actions.ActionArgs({
                actionType: Actions.ActionType.Call,
                accountId: 0,
                amount: Types.AssetAmount({
                    sign: false,
                    denomination: Types.AssetDenomination.Wei,
                    ref: Types.AssetReference.Delta,
                    value: 0
                }),
                primaryMarketId: 0,
                secondaryMarketId: 0,
                otherAddress: address(this),
                otherAccountId: 0,
                data: data
            });
    }

    function _getDepositAction(uint256 marketId, uint256 amount)
        internal
        view
        returns (Actions.ActionArgs memory)
    {
        return
            Actions.ActionArgs({
                actionType: Actions.ActionType.Deposit,
                accountId: 0,
                amount: Types.AssetAmount({
                    sign: true,
                    denomination: Types.AssetDenomination.Wei,
                    ref: Types.AssetReference.Delta,
                    value: amount
                }),
                primaryMarketId: marketId,
                secondaryMarketId: 0,
                otherAddress: address(this),
                otherAccountId: 0,
                data: ""
            });
    }
}

// File: contracts/interfaces/dydx/ICallee.sol



// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8;
pragma experimental ABIEncoderV2;

import {Account} from "./ISoloMargin.sol";

/**
 * @title ICallee
 * @author dYdX
 *
 * Interface that Callees for Solo must implement in order to ingest data.
 */
interface ICallee {
    // ============ Public Functions ============

    /**
     * Allows users to send this contract arbitrary data.
     *
     * @param  sender       The msg.sender to Solo
     * @param  accountInfo  The account from which the data is being sent
     * @param  data         Arbitrary data given by the sender
     */
    function callFunction(
        address sender,
        Account.Info calldata accountInfo,
        bytes calldata data
    ) external;
}

// File: contracts/interfaces/IWETH.sol



// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

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

interface IWETH is IERC20 {
    function deposit() external payable;

    function withdraw(uint256 amount) external;
}

// File: @openzeppelin/contracts/utils/math/SafeMath.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (utils/math/SafeMath.sol)

pragma solidity ^0.8.0;

// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.

/**
 * @dev Wrappers over Solidity's arithmetic operations.
 *
 * NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler
 * now has built in overflow checking.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
            // benefit is lost if 'b' is also tested.
            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        return a + b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        return a * b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator.
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

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



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

// File: contracts/interfaces/dydx/ISoloMargin.sol



// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8;
pragma experimental ABIEncoderV2;

library Account {
    enum Status {
        Normal,
        Liquid,
        Vapor
    }
    struct Info {
        address owner; // The address that owns the account
        uint256 number; // A nonce that allows a single address to control many accounts
    }
    struct accStorage {
        mapping(uint256 => Types.Par) balances; // Mapping from marketId to principal
        Status status;
    }
}

library Actions {
    enum ActionType {
        Deposit, // supply tokens
        Withdraw, // borrow tokens
        Transfer, // transfer balance between accounts
        Buy, // buy an amount of some token (publicly)
        Sell, // sell an amount of some token (publicly)
        Trade, // trade tokens against another account
        Liquidate, // liquidate an undercollateralized or expiring account
        Vaporize, // use excess tokens to zero-out a completely negative account
        Call // send arbitrary data to an address
    }

    enum AccountLayout {
        OnePrimary,
        TwoPrimary,
        PrimaryAndSecondary
    }

    enum MarketLayout {
        ZeroMarkets,
        OneMarket,
        TwoMarkets
    }

    struct ActionArgs {
        ActionType actionType;
        uint256 accountId;
        Types.AssetAmount amount;
        uint256 primaryMarketId;
        uint256 secondaryMarketId;
        address otherAddress;
        uint256 otherAccountId;
        bytes data;
    }

    struct DepositArgs {
        Types.AssetAmount amount;
        Account.Info account;
        uint256 market;
        address from;
    }

    struct WithdrawArgs {
        Types.AssetAmount amount;
        Account.Info account;
        uint256 market;
        address to;
    }

    struct TransferArgs {
        Types.AssetAmount amount;
        Account.Info accountOne;
        Account.Info accountTwo;
        uint256 market;
    }

    struct BuyArgs {
        Types.AssetAmount amount;
        Account.Info account;
        uint256 makerMarket;
        uint256 takerMarket;
        address exchangeWrapper;
        bytes orderData;
    }

    struct SellArgs {
        Types.AssetAmount amount;
        Account.Info account;
        uint256 takerMarket;
        uint256 makerMarket;
        address exchangeWrapper;
        bytes orderData;
    }

    struct TradeArgs {
        Types.AssetAmount amount;
        Account.Info takerAccount;
        Account.Info makerAccount;
        uint256 inputMarket;
        uint256 outputMarket;
        address autoTrader;
        bytes tradeData;
    }

    struct LiquidateArgs {
        Types.AssetAmount amount;
        Account.Info solidAccount;
        Account.Info liquidAccount;
        uint256 owedMarket;
        uint256 heldMarket;
    }

    struct VaporizeArgs {
        Types.AssetAmount amount;
        Account.Info solidAccount;
        Account.Info vaporAccount;
        uint256 owedMarket;
        uint256 heldMarket;
    }

    struct CallArgs {
        Account.Info account;
        address callee;
        bytes data;
    }
}

library Decimal {
    struct D256 {
        uint256 value;
    }
}

library Interest {
    struct Rate {
        uint256 value;
    }

    struct Index {
        uint96 borrow;
        uint96 supply;
        uint32 lastUpdate;
    }
}

library Monetary {
    struct Price {
        uint256 value;
    }
    struct Value {
        uint256 value;
    }
}

library Storage {
    // All information necessary for tracking a market
    struct Market {
        // Contract address of the associated ERC20 token
        address token;
        // Total aggregated supply and borrow amount of the entire market
        Types.TotalPar totalPar;
        // Interest index of the market
        Interest.Index index;
        // Contract address of the price oracle for this market
        address priceOracle;
        // Contract address of the interest setter for this market
        address interestSetter;
        // Multiplier on the marginRatio for this market
        Decimal.D256 marginPremium;
        // Multiplier on the liquidationSpread for this market
        Decimal.D256 spreadPremium;
        // Whether additional borrows are allowed for this market
        bool isClosing;
    }

    // The global risk parameters that govern the health and security of the system
    struct RiskParams {
        // Required ratio of over-collateralization
        Decimal.D256 marginRatio;
        // Percentage penalty incurred by liquidated accounts
        Decimal.D256 liquidationSpread;
        // Percentage of the borrower's interest fee that gets passed to the suppliers
        Decimal.D256 earningsRate;
        // The minimum absolute borrow value of an account
        // There must be sufficient incentivize to liquidate undercollateralized accounts
        Monetary.Value minBorrowedValue;
    }

    // The maximum RiskParam values that can be set
    struct RiskLimits {
        uint64 marginRatioMax;
        uint64 liquidationSpreadMax;
        uint64 earningsRateMax;
        uint64 marginPremiumMax;
        uint64 spreadPremiumMax;
        uint128 minBorrowedValueMax;
    }

    // The entire storage state of Solo
    struct State {
        // number of markets
        uint256 numMarkets;
        // marketId => Market
        mapping(uint256 => Market) markets;
        // owner => account number => Account
        mapping(address => mapping(uint256 => Account.accStorage)) accounts;
        // Addresses that can control other users accounts
        mapping(address => mapping(address => bool)) operators;
        // Addresses that can control all users accounts
        mapping(address => bool) globalOperators;
        // mutable risk parameters of the system
        RiskParams riskParams;
        // immutable risk limits of the system
        RiskLimits riskLimits;
    }
}

library Types {
    enum AssetDenomination {
        Wei, // the amount is denominated in wei
        Par // the amount is denominated in par
    }

    enum AssetReference {
        Delta, // the amount is given as a delta from the current value
        Target // the amount is given as an exact number to end up at
    }

    struct AssetAmount {
        bool sign; // true if positive
        AssetDenomination denomination;
        AssetReference ref;
        uint256 value;
    }

    struct TotalPar {
        uint128 borrow;
        uint128 supply;
    }

    struct Par {
        bool sign; // true if positive
        uint128 value;
    }

    struct Wei {
        bool sign; // true if positive
        uint256 value;
    }
}

interface ISoloMargin {
    struct OperatorArg {
        address operator;
        bool trusted;
    }

    function ownerSetSpreadPremium(
        uint256 marketId,
        Decimal.D256 calldata spreadPremium
    ) external;

    function getIsGlobalOperator(address operator) external view returns (bool);

    function getMarketTokenAddress(uint256 marketId)
        external
        view
        returns (address);

    function ownerSetInterestSetter(uint256 marketId, address interestSetter)
        external;

    function getAccountValues(Account.Info calldata account)
        external
        view
        returns (Monetary.Value memory, Monetary.Value memory);

    function getMarketPriceOracle(uint256 marketId)
        external
        view
        returns (address);

    function getMarketInterestSetter(uint256 marketId)
        external
        view
        returns (address);

    function getMarketSpreadPremium(uint256 marketId)
        external
        view
        returns (Decimal.D256 memory);

    function getNumMarkets() external view returns (uint256);

    function ownerWithdrawUnsupportedTokens(address token, address recipient)
        external
        returns (uint256);

    function ownerSetMinBorrowedValue(Monetary.Value calldata minBorrowedValue)
        external;

    function ownerSetLiquidationSpread(Decimal.D256 calldata spread) external;

    function ownerSetEarningsRate(Decimal.D256 calldata earningsRate) external;

    function getIsLocalOperator(address _owner, address operator)
        external
        view
        returns (bool);

    function getAccountPar(Account.Info calldata account, uint256 marketId)
        external
        view
        returns (Types.Par memory);

    function ownerSetMarginPremium(
        uint256 marketId,
        Decimal.D256 calldata marginPremium
    ) external;

    function getMarginRatio() external view returns (Decimal.D256 memory);

    function getMarketCurrentIndex(uint256 marketId)
        external
        view
        returns (Interest.Index memory);

    function getMarketIsClosing(uint256 marketId) external view returns (bool);

    function getRiskParams() external view returns (Storage.RiskParams memory);

    function getAccountBalances(Account.Info calldata account)
        external
        view
        returns (
            address[] memory,
            Types.Par[] memory,
            Types.Wei[] memory
        );

    function renounceOwnership() external;

    function getMinBorrowedValue()
        external
        view
        returns (Monetary.Value memory);

    function setOperators(OperatorArg[] calldata args) external;

    function getMarketPrice(uint256 marketId) external view returns (address);

    function owner() external view returns (address);

    function isOwner() external view returns (bool);

    function ownerWithdrawExcessTokens(uint256 marketId, address recipient)
        external
        returns (uint256);

    function ownerAddMarket(
        address token,
        address priceOracle,
        address interestSetter,
        Decimal.D256 calldata marginPremium,
        Decimal.D256 calldata spreadPremium
    ) external;

    function operate(
        Account.Info[] calldata accounts,
        Actions.ActionArgs[] calldata actions
    ) external;

    function getMarketWithInfo(uint256 marketId)
        external
        view
        returns (
            Storage.Market memory,
            Interest.Index memory,
            Monetary.Price memory,
            Interest.Rate memory
        );

    function ownerSetMarginRatio(Decimal.D256 calldata ratio) external;

    function getLiquidationSpread() external view returns (Decimal.D256 memory);

    function getAccountWei(Account.Info calldata account, uint256 marketId)
        external
        view
        returns (Types.Wei memory);

    function getMarketTotalPar(uint256 marketId)
        external
        view
        returns (Types.TotalPar memory);

    function getLiquidationSpreadForPair(
        uint256 heldMarketId,
        uint256 owedMarketId
    ) external view returns (Decimal.D256 memory);

    function getNumExcessTokens(uint256 marketId)
        external
        view
        returns (Types.Wei memory);

    function getMarketCachedIndex(uint256 marketId)
        external
        view
        returns (Interest.Index memory);

    function getAccountStatus(Account.Info calldata account)
        external
        view
        returns (uint8);

    function getEarningsRate() external view returns (Decimal.D256 memory);

    function ownerSetPriceOracle(uint256 marketId, address priceOracle)
        external;

    function getRiskLimits() external view returns (Storage.RiskLimits memory);

    function getMarket(uint256 marketId)
        external
        view
        returns (Storage.Market memory);

    function ownerSetIsClosing(uint256 marketId, bool isClosing) external;

    function ownerSetGlobalOperator(address operator, bool approved) external;

    function transferOwnership(address newOwner) external;

    function getAdjustedAccountValues(Account.Info calldata account)
        external
        view
        returns (Monetary.Value memory, Monetary.Value memory);

    function getMarketMarginPremium(uint256 marketId)
        external
        view
        returns (Decimal.D256 memory);

    function getMarketInterestRate(uint256 marketId)
        external
        view
        returns (Interest.Rate memory);
}