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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import "../../utils/TransferHelper.sol";
import "../security/OnlySelf.sol";
import "../interfaces/IFeeManager.sol";
import "../interfaces/ITradingOpen.sol";
import "../interfaces/ITradingChecker.sol";
import "../interfaces/IHookManager.sol";
import {ITradingConfig} from "../interfaces/ITradingConfig.sol";
import "../libraries/LibTrading.sol";

contract TradingOpenFacet is ITradingOpen, OnlySelf {
    using TransferHelper for address;

    function limitOrderDeal(LimitOrderDeal memory order, uint256 marketPrice) external override onlySelf {
        LibTrading.TradingStorage storage ts = LibTrading.tradingStorage();

        LibTrading.increaseOpenTradeAmount(ts, order.tokenIn, order.margin);
        // update fundingFee
        int256 longAccFundingFeePerShare = ITradingCore(address(this))
            .updatePairPositionInfo(order.pairBase, order.entryPrice, marketPrice, order.qty, order.isLong, true);

        bytes32[] storage tradeHashes = ts.userOpenTradeHashes[order.user];
        uint24 broker = IFeeManager(address(this)).chargeOpenFee(order.tokenIn, order.openFee, order.broker);
        OpenTrade memory ot = OpenTrade(
            order.user,
            uint32(tradeHashes.length),
            order.entryPrice,
            order.pairBase,
            order.tokenIn,
            order.margin,
            order.stopLoss,
            order.takeProfit,
            broker,
            order.isLong,
            order.openFee,
            longAccFundingFeePerShare,
            order.executionFee,
            uint40(block.timestamp),
            order.qty,
            IPairsManager(address(this)).getPairHoldingFeeRate(order.pairBase, order.isLong),
            Constants.currentBlockNumber()
        );
        ts.openTrades[order.orderHash] = ot;
        tradeHashes.push(order.orderHash);
        emit OpenMarketTrade(ot.user, order.orderHash, ot);
        IHookManager(address(this)).afterMarketExecuted(order.orderHash, ot);
    }

    function marketTradeCallback(bytes32 tradeHash, uint256 upperPrice, uint256 lowerPrice) external override onlySelf {
        LibTrading.TradingStorage storage ts = LibTrading.tradingStorage();
        ITrading.PendingTrade memory pt = ts.pendingTrades[tradeHash];
        uint256 marketPrice = pt.isLong ? upperPrice : lowerPrice;
        (bool successful, ITradingChecker.Refund refund, bytes memory data) =
            ITradingChecker(address(this)).marketTradeCallbackCheck(pt, marketPrice);
        if (!successful) {
            (address tokenIn, address user, uint256 amountIn) = (pt.tokenIn, pt.user, pt.amountIn);
            // clear pending data
            ts.pendingTradeAmountIns[tokenIn] -= amountIn;
            delete ts.pendingTrades[tradeHash];

            tokenIn.transfer(user, amountIn);
            emit PendingTradeRefund(user, tradeHash, refund);
            IHookManager(address(this)).afterMarketRefund(tradeHash, user, refund);
        } else {
            (uint96 openFee, uint96 executionFee, uint64 entryPrice, uint64 takeProfit) =
                abi.decode(data, (uint96, uint96, uint64, uint64));
            pt.takeProfit = takeProfit;
            _marketTradeDeal(ts, pt, tradeHash, openFee, executionFee, marketPrice, entryPrice);
            // clear pending data
            ts.pendingTradeAmountIns[pt.tokenIn] -= pt.amountIn;
            address tokenIn = pt.tokenIn;
            delete ts.pendingTrades[tradeHash];

            tokenIn.transfer(ITradingConfig(address(this)).executionFeeReceiver(), executionFee);
        }
    }

    function _marketTradeDeal(
        LibTrading.TradingStorage storage ts,
        ITrading.PendingTrade memory pt,
        bytes32 tradeHash,
        uint96 openFee,
        uint96 executionFee,
        uint256 marketPrice,
        uint64 entryPrice
    ) private {
        uint96 margin = uint96(pt.amountIn) - openFee - executionFee;
        LibTrading.increaseOpenTradeAmount(ts, pt.tokenIn, margin);
        // update fundingFee
        int256 longAccFundingFeePerShare = ITradingCore(address(this))
            .updatePairPositionInfo(pt.pairBase, entryPrice, marketPrice, pt.qty, pt.isLong, true);

        uint24 broker = IFeeManager(address(this)).chargeOpenFee(pt.tokenIn, openFee, pt.broker);
        bytes32[] storage tradeHashes = ts.userOpenTradeHashes[pt.user];
        OpenTrade memory ot = OpenTrade(
            pt.user,
            uint32(tradeHashes.length),
            entryPrice,
            pt.pairBase,
            pt.tokenIn,
            margin,
            pt.stopLoss,
            pt.takeProfit,
            broker,
            pt.isLong,
            openFee,
            longAccFundingFeePerShare,
            executionFee,
            uint40(block.timestamp),
            pt.qty,
            IPairsManager(address(this)).getPairHoldingFeeRate(pt.pairBase, pt.isLong),
            Constants.currentBlockNumber()
        );
        ts.openTrades[tradeHash] = ot;
        tradeHashes.push(tradeHash);
        emit OpenMarketTrade(pt.user, tradeHash, ot);
        IHookManager(address(this)).afterMarketExecuted(tradeHash, ot);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import "../dependencies/IWBNB.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

library TransferHelper {
    using Address for address payable;
    using SafeERC20 for IERC20;

    uint256 public constant MONAD = 143;
    address public constant MONAD_WRAPPED = 0x3bd359C1119dA7Da1D913D1C4D2B7c461115433A;

    function transfer(address token, address to, uint256 amount) internal {
        (address wrapped, bool hasWrapped) = _nativeWrappedIfAvailable();
        if (!hasWrapped || token != wrapped || _isContract(to)) {
            IERC20(token).safeTransfer(to, amount);
        } else {
            IWBNB(token).withdraw(amount);
            payable(to).sendValue(amount);
        }
    }

    function transferFrom(address token, address from, uint256 amount) internal {
        (address wrapped, bool hasWrapped) = _nativeWrappedIfAvailable();
        if (!hasWrapped || token != wrapped) {
            IERC20(token).safeTransferFrom(from, address(this), amount);
        } else {
            require(msg.value >= amount, "insufficient transfers");
            IWBNB(token).deposit{value: amount}();
        }
    }

    function nativeWrapped() internal view returns (address) {
        (address wrapped, bool hasWrapped) = _nativeWrappedIfAvailable();
        if (!hasWrapped) {
            revert("unsupported chain id");
        }
        return wrapped;
    }

    function _nativeWrappedIfAvailable() private view returns (address wrapped, bool hasWrapped) {
        uint256 chainId = block.chainid;
        if (chainId == MONAD) {
            return (MONAD_WRAPPED, true);
        }
        return (address(0), false);
    }

    function _isContract(address account) private view returns (bool) {
        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 0;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

abstract contract OnlySelf {
    // Functions that add the onlySelf modifier can eliminate many basic parameter checks, such as address != address(0), etc.
    modifier onlySelf() {
        require(msg.sender == address(this), "only self call");
        _;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import "../libraries/LibFeeManager.sol";
import "./IPairsManager.sol";
import {CommissionInfo} from "./IBrokerManager.sol";

interface IFeeManager {
    event AddFeeConfig(
        uint16 indexed index, uint16 openFeeP, uint16 closeFeeP, uint24 shareP, uint24 minCloseFeeP, string name
    );
    event RemoveFeeConfig(uint16 indexed index);
    event UpdateFeeConfig(uint16 indexed index, uint16 openFeeP, uint16 closeFeeP, uint24 shareP, uint24 minCloseFeeP);
    event SetDaoRepurchase(address indexed oldDaoRepurchase, address daoRepurchase);
    event SetRevenueAddress(address indexed oldRevenueAddress, address revenueAddress);
    event OpenFee(
        address indexed token,
        uint256 totalFee,
        uint256 daoAmount,
        uint24 brokerId,
        uint256 brokerAmount,
        uint256 alpPoolAmount
    );
    event CloseFee(
        address indexed token,
        uint256 totalFee,
        uint256 daoAmount,
        uint24 brokerId,
        uint256 brokerAmount,
        uint256 alpPoolAmount
    );
    event PredictionOpenFee(
        address indexed token,
        uint256 totalFee,
        uint256 daoAmount,
        uint24 brokerId,
        uint256 brokerAmount,
        uint256 alpPoolAmount
    );
    event PredictionCloseFee(
        address indexed token,
        uint256 totalFee,
        uint256 daoAmount,
        uint24 brokerId,
        uint256 brokerAmount,
        uint256 alpPoolAmount
    );
    event WithdrawRevenue(address indexed token, address indexed operator, uint256 amount);

    struct FeeDetail {
        // total accumulated fees, include DAO/referral fee
        uint256 total;
        // accumulated DAO repurchase funds
        uint256 daoAmount;
        uint256 brokerAmount;
        uint256 alpPoolAmount;
    }

    function addFeeConfig(
        uint16 index,
        string calldata name,
        uint16 openFeeP,
        uint16 closeFeeP,
        uint24 shareP,
        uint24 minCloseFeeP
    ) external;

    function removeFeeConfig(uint16 index) external;

    function updateFeeConfig(uint16 index, uint16 openFeeP, uint16 closeFeeP, uint24 shareP, uint24 minCloseFeeP)
        external;

    function setDaoRepurchase(address daoRepurchase) external;

    function setRevenueAddress(address revenueAddress) external;

    function getFeeConfigByIndex(uint16 index)
        external
        view
        returns (LibFeeManager.FeeConfig memory, IPairsManager.PairSimple[] memory);

    function getFeeDetails(address[] calldata tokens) external view returns (FeeDetail[] memory);

    function feeAddress() external view returns (address daoRepurchase, address revenueAddress);

    function revenues(address[] calldata tokens) external view returns (CommissionInfo[] memory);

    function chargeOpenFee(address token, uint256 openFee, uint24 broker) external returns (uint24);

    function chargePredictionOpenFee(address token, uint256 openFee, uint24 broker) external returns (uint24);

    function chargeCloseFee(address token, uint256 closeFee, uint24 broker) external;

    function chargePredictionCloseFee(address token, uint256 closeFee, uint24 broker) external;

    function withdrawRevenue(address[] calldata tokens) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import "./ITrading.sol";
import "./ITradingChecker.sol";

struct LimitOrderDeal {
    bytes32 orderHash;
    address user;
    uint64 entryPrice;
    address pairBase;
    address tokenIn;
    uint96 margin;
    uint64 stopLoss;
    uint64 takeProfit;
    uint24 broker;
    bool isLong;
    uint96 openFee;
    uint96 executionFee;
    uint80 qty;
}

interface ITradingOpen is ITrading {
    event PendingTradeRefund(address indexed user, bytes32 indexed tradeHash, ITradingChecker.Refund refund);
    event OpenMarketTrade(address indexed user, bytes32 indexed tradeHash, OpenTrade ot);

    function limitOrderDeal(LimitOrderDeal memory, uint256 marketPrice) external;

    function marketTradeCallback(bytes32 tradeHash, uint256 upperPrice, uint256 lowerPrice) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import "./IBook.sol";
import {LimitOrder, ILimitOrder} from "./ILimitOrder.sol";
import "./ITrading.sol";

interface ITradingChecker {
    enum Refund {
        NO,
        SWITCH,
        PAIR_STATUS,
        AMOUNT_IN,
        USER_PRICE,
        MIN_NOTIONAL_USD,
        MAX_NOTIONAL_USD,
        MAX_LEVERAGE,
        TP,
        SL,
        PAIR_OI,
        OPEN_LOST,
        SYSTEM,
        FEED_DELAY,
        PRICE_PROTECTION
    }

    function checkSl(bool isLong, uint256 stopLoss, uint256 entryPrice) external pure returns (bool);

    function openLimitOrderCheck(IBook.OpenDataInput calldata data) external view;

    /// @return successful
    /// @return refund
    /// @return data (uint96 openFee, uint96 executionFee, uint64 takeProfit)
    function executeLimitOrderCheck(LimitOrder calldata order, uint256 marketPrice)
        external
        view
        returns (bool successful, Refund refund, bytes memory data);

    function availableTakeProfit(ITrading.OpenTrade calldata) external view returns (uint64 takeProfit);

    function openMarketTradeCheck(IBook.OpenDataInput calldata data) external view;

    /// @return successful
    /// @return refund
    /// @return data (uint96 openFee, uint96 executionFee, uint64 entryPrice, uint64 takeProfit)
    function marketTradeCallbackCheck(ITrading.PendingTrade calldata pt, uint256 marketPrice)
        external
        view
        returns (bool successful, Refund refund, bytes memory data);

    function executeLiquidateCheck(ITrading.OpenTrade calldata ot, uint256 marketPrice, uint256 closePrice)
        external
        view
        returns (bool needLiq, int256 pnl, int256 fundingFee, uint256 closeFee, uint256 holdingFee);
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.19;

import "./ITrading.sol";
import {CloseInfo} from "./ITradingClose.sol";
import "./ITradingChecker.sol";

struct PartnerInfo {
    string name;
    string url;
    address protocolAddress;
    address callbackReceiver;
    uint256 gasCost;
}

interface IHookManager {
    event UpdatePartnerName(address indexed protocolAddress, string name);
    event UpdatePartnerUrl(address indexed protocolAddress, string url);
    event UpdatePartnerCallbackReceiver(address indexed protocolAddress, address callbackReceiver);

    function addPartner(string calldata name, string calldata url, address protocolAddress, address callbackReceiver)
        external;

    function updatePartnerName(address protocolAddress, string calldata name) external;

    function updatePartnerUrl(address protocolAddress, string calldata url) external;

    function updatePartnerCallbackReceiver(address protocolAddress, address callbackReceiver) external;

    function getPartnerByAddress(address protocolAddress)
        external
        view
        returns (uint256 blockNumber, PartnerInfo memory);

    function partners(uint256 start, uint8 length) external view returns (uint256 blockNumber, PartnerInfo[] memory);

    function afterMarketExecuted(bytes32 tradeHash, ITrading.OpenTrade memory ot) external;

    function afterMarketRefund(bytes32 tradeHash, address user, ITradingChecker.Refund refund) external;

    function afterClose(bytes32 tradeHash, address user, CloseInfo memory info) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

struct MaxTpRatioForLeverage {
    uint16 leverage;
    uint24 maxTakeProfitP;
}

interface ITradingConfig {
    event SetTradeSwitches(uint16 indexed oldTradeSwitches, uint16 indexed tradeSwitches);
    event SetExecutionFeeUsd(uint256 oldExecutionFeeUsd, uint256 executionFeeUsd);
    event SetMinNotionalUsd(uint256 oldMinNotionalUsd, uint256 minNotionalUsd);
    event SetMaxTakeProfitP(uint24 oldMaxTakeProfitP, uint24 maxTakeProfitP);
    event SetMaxTpRatioForLeverage(address indexed pairBase, MaxTpRatioForLeverage[] maxTpRatios);
    event SetExecutionFeeReceiver(address receiver);

    /*
    |-----------> 8 bit <-----------|
    |---|---|---|---|---|---|---|---|
    | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
    |---|---|---|---|---|---|---|---|
    */
    enum TradingSwitch {
        LIMIT_ORDER,
        EXECUTE_LIMIT_ORDER,
        MARKET_TRADING,
        USER_CLOSE_TRADING,
        TP_SL_CLOSE_TRADING,
        LIQUIDATE_TRADING,
        PREDICTION_BET,
        PREDICTION_SETTLE
    }

    struct TradingConfig {
        uint256 executionFeeUsd;
        uint256 minNotionalUsd;
        uint24 maxTakeProfitP;
        bool limitOrder;
        bool executeLimitOrder;
        bool marketTrading;
        bool userCloseTrading;
        bool tpSlCloseTrading;
        bool liquidateTrading;
    }

    struct PriceConfig {
        address pairBase;
        uint64 upperPrice; // 1e8
        uint64 lowerPrice; // 1e8
    }

    struct PredictionConfig {
        uint256 minBetUsd;
        bool predictionBet;
        bool predictionSettle;
    }

    function getTradingConfig() external view returns (TradingConfig memory);

    function getPredictionConfig() external view returns (PredictionConfig memory);

    function setTradingSwitches(
        bool limitOrder,
        bool executeLimitOrder,
        bool marketTrade,
        bool userCloseTrade,
        bool tpSlCloseTrade,
        bool liquidateTrade,
        bool predictBet,
        bool predictSettle
    ) external;

    function setExecutionFeeUsd(uint256 executionFeeUsd) external;

    function setMinNotionalUsd(uint256 minNotionalUsd) external;

    function setMinBetUsd(uint256 minBetUsd) external;

    function setMaxTakeProfitP(uint24 maxTakeProfitP) external;

    function setMaxTpRatioForLeverage(address pairBase, MaxTpRatioForLeverage[] calldata maxTpRatios) external;

    function setExecutionFeeReceiver(address receiver) external;

    function executionFeeReceiver() external view returns (address);

    function getPairMaxTpRatios(address pairBase) external view returns (MaxTpRatioForLeverage[] memory);

    function getPairMaxTpRatio(address pairBase, uint256 leverage_10000) external view returns (uint24);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import "../../utils/Constants.sol";
import "../interfaces/IVault.sol";
import "../interfaces/ITrading.sol";
import "../interfaces/ITradingCore.sol";
import "../interfaces/IPairsManager.sol";
import "@openzeppelin/contracts/utils/math/Math.sol";
import {ZERO, ONE, UC, uc, into} from "unchecked-counter/src/UC.sol";

library LibTrading {
    using Math for uint256;

    bytes32 constant TRADING_POSITION = keccak256("apollox.trading.storage");

    struct TradingStorage {
        uint256 salt;
        //--------------- pending ---------------
        // tradeHash =>
        mapping(bytes32 => ITrading.PendingTrade) pendingTrades;
        // margin.tokenIn => total amount of all pending trades
        mapping(address => uint256) pendingTradeAmountIns;
        //--------------- open ---------------
        // tradeHash =>
        mapping(bytes32 => ITrading.OpenTrade) openTrades;
        // user => tradeHash[]
        mapping(address => bytes32[]) userOpenTradeHashes;
        // tokenIn =>
        mapping(address => uint256) openTradeAmountIns;
        // tokenIn[]
        address[] openTradeTokenIns;
    }

    function tradingStorage() internal pure returns (TradingStorage storage ts) {
        bytes32 position = TRADING_POSITION;
        assembly {
            ts.slot := position
        }
    }

    function calcFundingFee(ITrading.OpenTrade memory ot, IVault.MarginToken memory mt, uint256 marketPrice)
        internal
        view
        returns (int256 fundingFee)
    {
        int256 longAccFundingFeePerShare = ITradingCore(address(this)).lastLongAccFundingFeePerShare(ot.pairBase);
        return calcFundingFee(ot, mt, marketPrice, longAccFundingFeePerShare);
    }

    function calcFundingFee(
        ITrading.OpenTrade memory ot,
        IVault.MarginToken memory mt,
        uint256 marketPrice,
        int256 longAccFundingFeePerShare
    ) internal pure returns (int256 fundingFee) {
        int256 fundingFeeUsd;
        if (ot.isLong) {
            fundingFeeUsd =
                int256(ot.qty * marketPrice) * (longAccFundingFeePerShare - ot.longAccFundingFeePerShare) / 1e18;
        } else {
            fundingFeeUsd =
                int256(ot.qty * marketPrice) * (longAccFundingFeePerShare - ot.longAccFundingFeePerShare) * (-1) / 1e18;
        }
        fundingFee = fundingFeeUsd * int256(10 ** mt.decimals) / int256(1e10 * mt.price);
        return fundingFee;
    }

    function increaseOpenTradeAmount(TradingStorage storage ts, address token, uint256 amount) internal {
        address[] storage tokenIns = ts.openTradeTokenIns;
        bool exists;
        for (UC i = ZERO; i < uc(tokenIns.length); i = i + ONE) {
            if (tokenIns[i.into()] == token) {
                exists = true;
                break;
            }
        }
        if (!exists) {
            tokenIns.push(token);
        }
        ts.openTradeAmountIns[token] += amount;
    }

    function calcHoldingFee(ITrading.OpenTrade storage ot, IVault.MarginToken memory mt)
        internal
        view
        returns (uint256)
    {
        uint256 holdingFee;
        if (ot.holdingFeeRate > 0 && ot.openBlock > 0) {
            // holdingFeeRate 1e12
            holdingFee = uint256(ot.entryPrice) * ot.qty * (Constants.currentBlockNumber() - ot.openBlock)
                * ot.holdingFeeRate * (10 ** mt.decimals) / uint256(1e22 * mt.price);
        }
        return holdingFee;
    }

    function calcCloseFee(
        IPairsManager.FeeConfig memory feeConfig,
        IVault.MarginToken memory mt,
        uint256 closeNotionalUsd,
        int256 pnl
    ) internal pure returns (uint256) {
        if (feeConfig.shareP > 0 && feeConfig.minCloseFeeP > 0) {
            // closeFeeUsd = max(pnlUsd * shareP, minCloseFeeP * notionalUsd)
            uint256 minCloseFeeUsd = closeNotionalUsd * feeConfig.minCloseFeeP;
            if (pnl <= 0) {
                return minCloseFeeUsd * (10 ** mt.decimals) / (1e5 * 1e10 * mt.price);
            } else {
                uint256 closeFeeUsd = uint256(pnl) * mt.price * feeConfig.shareP * 1e10 / (10 ** mt.decimals);
                return closeFeeUsd.max(minCloseFeeUsd) * (10 ** mt.decimals) / (1e5 * 1e10 * mt.price);
            }
        } else {
            return closeNotionalUsd * feeConfig.closeFeeP * (10 ** mt.decimals) / (1e4 * 1e10 * mt.price);
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

interface IWBNB {
    function deposit() external payable;

    function withdraw(uint256) external;
}

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

pragma solidity ^0.8.1;

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

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

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

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

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

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

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

pragma solidity ^0.8.0;

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

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

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

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

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

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

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
        }
    }

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

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

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

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

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

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import "../../utils/Constants.sol";
import "../interfaces/IVault.sol";
import "../interfaces/IFeeManager.sol";
import "./LibBrokerManager.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

library LibFeeManager {
    using SafeERC20 for IERC20;

    bytes32 constant FEE_MANAGER_STORAGE_POSITION = keccak256("apollox.fee.manager.storage");

    struct FeeConfig {
        string name;
        uint16 index;
        uint16 openFeeP; // 1e4
        uint16 closeFeeP; // 1e4
        bool enable;
        uint24 shareP; // 1e5
        uint24 minCloseFeeP; // 1e5
    }

    struct FeeManagerStorage {
        // 0/1/2/3/.../ => FeeConfig
        mapping(uint16 => FeeConfig) feeConfigs;
        // feeConfig index => pair.base[]
        mapping(uint16 => address[]) feeConfigPairs;
        // USDT/BUSD/.../ => FeeDetail
        mapping(address => IFeeManager.FeeDetail) feeDetails;
        address daoRepurchase;
        address revenueAddress;
        // USDT/BUSD/.../ => Commission
        mapping(address token => LibBrokerManager.Commission) revenues;
    }

    function feeManagerStorage() internal pure returns (FeeManagerStorage storage fms) {
        bytes32 position = FEE_MANAGER_STORAGE_POSITION;
        assembly {
            fms.slot := position
        }
    }

    event AddFeeConfig(
        uint16 indexed index, uint16 openFeeP, uint16 closeFeeP, uint24 shareP, uint24 minCloseFeeP, string name
    );
    event RemoveFeeConfig(uint16 indexed index);
    event UpdateFeeConfig(uint16 indexed index, uint16 openFeeP, uint16 closeFeeP, uint24 shareP, uint24 minCloseFeeP);
    event SetDaoRepurchase(address indexed oldDaoRepurchase, address daoRepurchase);
    event SetRevenueAddress(address indexed oldRevenueAddress, address revenueAddress);

    function initialize(address daoRepurchase, address revenueAddress) internal {
        FeeManagerStorage storage fms = feeManagerStorage();
        require(fms.daoRepurchase == address(0), "LibFeeManager: Already initialized");
        setDaoRepurchase(daoRepurchase);
        setRevenueAddress(revenueAddress);
        // default fee config
        fms.feeConfigs[0] = FeeConfig("Default Fee Rate", 0, 8, 8, true, 0, 0);
        emit AddFeeConfig(0, 8, 8, 0, 0, "Default Fee Rate");
    }

    function addFeeConfig(
        uint16 index,
        string calldata name,
        uint16 openFeeP,
        uint16 closeFeeP,
        uint24 shareP,
        uint24 minCloseFeeP
    ) internal {
        FeeManagerStorage storage fms = feeManagerStorage();
        FeeConfig storage config = fms.feeConfigs[index];
        require(!config.enable, "LibFeeManager: Configuration already exists");
        config.index = index;
        config.name = name;
        config.openFeeP = openFeeP;
        config.closeFeeP = closeFeeP;
        config.enable = true;
        config.shareP = shareP;
        config.minCloseFeeP = minCloseFeeP;
        emit AddFeeConfig(index, openFeeP, closeFeeP, shareP, minCloseFeeP, name);
    }

    function removeFeeConfig(uint16 index) internal {
        FeeManagerStorage storage fms = feeManagerStorage();
        FeeConfig storage config = fms.feeConfigs[index];
        require(config.enable, "LibFeeManager: Configuration not enabled");
        require(
            fms.feeConfigPairs[index].length == 0, "LibFeeManager: Cannot remove a configuration that is still in use"
        );
        delete fms.feeConfigs[index];
        emit RemoveFeeConfig(index);
    }

    function updateFeeConfig(uint16 index, uint16 openFeeP, uint16 closeFeeP, uint24 shareP, uint24 minCloseFeeP)
        internal
    {
        FeeManagerStorage storage fms = feeManagerStorage();
        FeeConfig storage config = fms.feeConfigs[index];
        require(config.enable, "LibFeeManager: Configuration not enabled");
        config.openFeeP = openFeeP;
        config.closeFeeP = closeFeeP;
        config.shareP = shareP;
        config.minCloseFeeP = minCloseFeeP;
        emit UpdateFeeConfig(index, openFeeP, closeFeeP, shareP, minCloseFeeP);
    }

    function setDaoRepurchase(address daoRepurchase) internal {
        require(daoRepurchase != address(0), "LibFeeManager: daoRepurchase cannot be 0 address");
        FeeManagerStorage storage fms = feeManagerStorage();
        address oldDaoRepurchase = fms.daoRepurchase;
        fms.daoRepurchase = daoRepurchase;
        emit SetDaoRepurchase(oldDaoRepurchase, daoRepurchase);
    }

    function setRevenueAddress(address revenueAddress) internal {
        require(revenueAddress != address(0), "LibFeeManager: revenueAddress cannot be 0 address");
        FeeManagerStorage storage fms = feeManagerStorage();
        address oldRevenueAddress = fms.revenueAddress;
        fms.revenueAddress = revenueAddress;
        emit SetRevenueAddress(oldRevenueAddress, revenueAddress);
    }

    function getFeeConfigByIndex(uint16 index) internal view returns (FeeConfig memory, address[] storage) {
        FeeManagerStorage storage fms = feeManagerStorage();
        return (fms.feeConfigs[index], fms.feeConfigPairs[index]);
    }

    function chargeFee(address token, uint256 feeAmount, uint24 broker)
        internal
        returns (uint24 brokerId, uint256 brokerAmount, uint256 daoAmount, uint256 alpPoolAmount)
    {
        FeeManagerStorage storage fms = feeManagerStorage();
        IFeeManager.FeeDetail storage detail = fms.feeDetails[token];
        detail.total += feeAmount;

        (brokerAmount, brokerId, daoAmount, alpPoolAmount) =
            LibBrokerManager.updateBrokerCommission(token, feeAmount, broker);
        detail.brokerAmount += brokerAmount;

        if (daoAmount > 0) {
            // The buyback address prefers to receive wrapped tokens since LPs are composed of wrapped tokens, for example: WBNB-APX LP.
            IERC20(token).safeTransfer(fms.daoRepurchase, daoAmount);
            detail.daoAmount += daoAmount;
        }

        if (alpPoolAmount > 0) {
            IVault(address(this)).increase(token, alpPoolAmount);
            detail.alpPoolAmount += alpPoolAmount;
        }

        uint256 revenue = feeAmount - brokerAmount - daoAmount - alpPoolAmount;
        if (revenue > 0) {
            LibBrokerManager.Commission storage c = fms.revenues[token];
            c.total += revenue;
            c.pending += revenue;
        }
        return (brokerId, brokerAmount, daoAmount, alpPoolAmount);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import "./IFeeManager.sol";
import {SlippageConfigView} from "./ISlippageManager.sol";
import "../libraries/LibPairsManager.sol";

struct PairMaxOiAndFundingFeeConfig {
    uint256 maxLongOiUsd;
    uint256 maxShortOiUsd;
    uint256 fundingFeePerBlockP;
    uint256 minFundingFeeR;
    uint256 maxFundingFeeR;
}

interface IPairsManager {
    enum PairType {
        CRYPTO,
        STOCKS,
        FOREX,
        INDICES,
        COMMODITIES,
        ALPHA
    }
    enum PairStatus {
        AVAILABLE,
        REDUCE_ONLY,
        CLOSE
    }

    struct PairSimple {
        // BTC/USD
        string name;
        // BTC address
        address base;
        PairType pairType;
        PairStatus status;
    }

    struct PairView {
        // BTC/USD
        string name;
        // BTC address
        address base;
        uint16 basePosition;
        PairType pairType;
        PairStatus status;
        uint256 maxLongOiUsd;
        uint256 maxShortOiUsd;
        uint256 fundingFeePerBlockP; // 1e18
        uint256 minFundingFeeR; // 1e18
        uint256 maxFundingFeeR; // 1e18

        LibPairsManager.LeverageMargin[] leverageMargins;

        uint16 slippageConfigIndex;
        uint16 slippagePosition;
        LibPairsManager.SlippageConfig slippageConfig;

        uint16 feeConfigIndex;
        uint16 feePosition;
        LibFeeManager.FeeConfig feeConfig;

        uint40 longHoldingFeeRate; // 1e12
        uint40 shortHoldingFeeRate; // 1e12
    }

    struct LeverageMargin {
        uint256 notionalUsd;
        uint16 maxLeverage;
        uint16 initialLostP; // 1e4
        uint16 liqLostP; // 1e4
    }

    struct FeeConfig {
        uint16 openFeeP; // 1e4
        uint16 closeFeeP; // 1e4
        uint24 shareP; // 1e5
        uint24 minCloseFeeP; // 1e5
    }

    struct TradingPair {
        // BTC address
        address base;
        string name;
        PairType pairType;
        PairStatus status;
        PairMaxOiAndFundingFeeConfig pairConfig;
        LeverageMargin[] leverageMargins;
        SlippageConfigView slippageConfig;
        FeeConfig feeConfig;
    }

    struct UpdatePairMaxOiParam {
        address base;
        uint256 maxLongOiUsd;
        uint256 maxShortOiUsd;
    }

    struct UpdatePairFundingFeeConfigParam {
        address base;
        uint256 fundingFeePerBlockP;
        uint256 minFundingFeeR;
        uint256 maxFundingFeeR;
    }

    struct UpdateLeverageParam {
        address base;
        LibPairsManager.LeverageMargin[] leverageMargins;
    }

    function addPair(
        address base,
        string calldata name,
        PairType pairType,
        PairStatus status,
        PairMaxOiAndFundingFeeConfig calldata pairConfig,
        uint16 slippageConfigIndex,
        uint16 feeConfigIndex,
        LibPairsManager.LeverageMargin[] calldata leverageMargins,
        uint40 longHoldingFeeRate,
        uint40 shortHoldingFeeRate
    ) external;

    function updatePairMaxOi(address base, uint256 maxLongOiUsd, uint256 maxShortOiUsd) external;

    function batchUpdatePairMaxOi(UpdatePairMaxOiParam[] calldata params) external;

    function updatePairHoldingFeeRate(address base, uint40 longHoldingFeeRate, uint40 shortHoldingFeeRate) external;

    function updatePairFundingFeeConfig(
        address base,
        uint256 fundingFeePerBlockP,
        uint256 minFundingFeeR,
        uint256 maxFundingFeeR
    ) external;

    function batchUpdatePairFundingFeeConfig(UpdatePairFundingFeeConfigParam[] calldata params) external;

    function removePair(address base) external;

    function updatePairStatus(address base, PairStatus status) external;

    function updatePairType(address base, PairType pairType) external;

    function batchUpdatePairStatus(PairType pairType, PairStatus status) external;

    function updatePairSlippage(address base, uint16 slippageConfigIndex) external;

    function updatePairFee(address base, uint16 feeConfigIndex) external;

    function updatePairLeverageMargin(address base, LibPairsManager.LeverageMargin[] calldata leverageMargins) external;

    function safeMode(bool openSafeMode, address[] calldata bases, UpdateLeverageParam[] calldata updateLeverages)
        external;

    function pairsV4() external view returns (PairView[] memory);

    function getPairByBaseV4(address base) external view returns (PairView memory);

    function getPairForTrading(address base) external view returns (TradingPair memory);

    function getPairConfig(address base) external view returns (PairMaxOiAndFundingFeeConfig memory);

    function getPairFeeConfig(address base) external view returns (FeeConfig memory);

    function getPairHoldingFeeRate(address base, bool isLong) external view returns (uint40 holdingFeeRate);

    function getPairSlippageConfig(address base) external view returns (SlippageConfigView memory);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

struct CommissionInfo {
    address token;
    uint256 total;
    uint256 pending;
}

interface IBrokerManager {
    struct BrokerInfo {
        string name;
        string url;
        address receiver;
        uint24 id;
        uint16 commissionP;
        uint16 daoShareP;
        uint16 alpPoolP;
        CommissionInfo[] commissions;
    }

    function addBroker(
        uint24 id,
        uint16 commissionP,
        uint16 daoShareP,
        uint16 alpPoolP,
        address receiver,
        string calldata name,
        string calldata url
    ) external;

    function removeBroker(uint24 id) external;

    function updateBrokerCommissionP(uint24 id, uint16 commissionP, uint16 daoShareP, uint16 alpPoolP) external;

    function updateBrokerReceiver(uint24 id, address receiver) external;

    function updateBrokerName(uint24 id, string calldata name) external;

    function updateBrokerUrl(uint24 id, string calldata url) external;

    function getBrokerById(uint24 id) external view returns (BrokerInfo memory);

    function brokers(uint256 start, uint8 length) external view returns (BrokerInfo[] memory);

    function withdrawCommission(uint24 id) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

interface ITrading {
    struct PendingTrade {
        address user;
        uint24 broker;
        bool isLong;
        uint64 price; // 1e8
        address pairBase;
        uint96 amountIn; // tokenIn decimals
        address tokenIn;
        uint80 qty; // 1e10
        uint64 stopLoss; // 1e8
        uint64 takeProfit; // 1e8
        uint128 blockNumber;
    }

    struct OpenTrade {
        address user;
        uint32 userOpenTradeIndex;
        uint64 entryPrice; // 1e8
        address pairBase;
        address tokenIn;
        uint96 margin; // tokenIn decimals
        uint64 stopLoss; // 1e8
        uint64 takeProfit; // 1e8
        uint24 broker;
        bool isLong;
        uint96 openFee; // tokenIn decimals
        int256 longAccFundingFeePerShare; // 1e18
        uint96 executionFee; // tokenIn decimals
        uint40 timestamp;
        uint80 qty; // 1e10

        uint40 holdingFeeRate; // 1e12
        uint256 openBlock;
    }

    struct MarginBalance {
        address token;
        uint256 price;
        uint8 decimals;
        uint256 balanceUsd;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

interface IBook {
    struct OpenDataInput {
        // Pair.base
        address pairBase;
        bool isLong;
        // BUSD/USDT address
        address tokenIn;
        uint96 amountIn; // tokenIn decimals
        uint80 qty; // 1e10
        // Limit Order: limit price
        // Market Trade: worst price acceptable
        uint64 price; // 1e8
        uint64 stopLoss; // 1e8
        uint64 takeProfit; // 1e8
        uint24 broker;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import "./IBook.sol";
import "./ITradingChecker.sol";

struct LimitOrder {
    address user;
    uint32 userOpenOrderIndex;
    uint64 limitPrice; // 1e8
    // pair.base
    address pairBase;
    uint96 amountIn; // tokenIn decimals
    address tokenIn;
    bool isLong;
    uint24 broker;
    uint64 stopLoss; // 1e8
    uint80 qty; // 1e10
    uint64 takeProfit; // 1e8
    uint40 timestamp;
}

interface ILimitOrder is IBook {
    event OpenLimitOrder(address indexed user, bytes32 indexed orderHash, OpenDataInput data);
    event UpdateOrderTp(address indexed user, bytes32 indexed orderHash, uint256 oldTp, uint256 tp);
    event UpdateOrderSl(address indexed user, bytes32 indexed orderHash, uint256 oldSl, uint256 sl);
    event ExecuteLimitOrderRejected(address indexed user, bytes32 indexed orderHash, ITradingChecker.Refund refund);
    event LimitOrderRefund(address indexed user, bytes32 indexed orderHash, ITradingChecker.Refund refund);
    event CancelLimitOrder(address indexed user, bytes32 indexed orderHash);
    event ExecuteLimitOrderSuccessful(address indexed user, bytes32 indexed orderHash);

    struct LimitOrderView {
        bytes32 orderHash;
        string pair;
        address pairBase;
        bool isLong;
        address tokenIn;
        uint96 amountIn; // tokenIn decimals
        uint80 qty; // 1e10
        uint64 limitPrice; // 1e8
        uint64 stopLoss; // 1e8
        uint64 takeProfit; // 1e8
        uint24 broker;
        uint40 timestamp;
    }

    struct KeeperExecution {
        bytes32 hash;
        uint64 price;
    }

    struct KeeperExecutionWithPyth {
        bytes32 hash;
        bytes32 priceId;
        bytes priceUpdateData;
    }

    function openLimitOrder(OpenDataInput memory openData) external returns (bytes32 orderHash);

    function openLimitOrderBNB(OpenDataInput memory openData) external payable returns (bytes32 orderHash);

    function updateOrderTp(bytes32 orderHash, uint64 takeProfit) external;

    function updateOrderSl(bytes32 orderHash, uint64 stopLoss) external;

    // stopLoss is allowed to be equal to 0, which means the sl setting is removed.
    // takeProfit must be greater than 0
    function updateOrderTpAndSl(bytes32 orderHash, uint64 takeProfit, uint64 stopLoss) external;

    function executeLimitOrder(KeeperExecution[] calldata) external;

    function executeLimitOrder(KeeperExecutionWithPyth[] calldata) external payable;

    function cancelLimitOrder(bytes32 orderHash) external;

    function getLimitOrderByHash(bytes32 orderHash) external view returns (LimitOrderView memory);

    function getLimitOrders(address user, address pairBase) external view returns (LimitOrderView[] memory);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import "./ITrading.sol";

struct CloseInfo {
    uint64 closePrice; // 1e8
    int96 fundingFee; // tokenIn decimals
    uint96 closeFee; // tokenIn decimals
    int96 pnl; // tokenIn decimals
    uint96 holdingFee; // tokenIn decimals
}

interface ITradingClose is ITrading {
    event CloseTradeSuccessful(address indexed user, bytes32 indexed tradeHash, CloseInfo closeInfo);
    event ExecuteCloseSuccessful(
        address indexed user, bytes32 indexed tradeHash, ExecutionType executionType, CloseInfo closeInfo
    );
    event CloseTradeReceived(address indexed user, bytes32 indexed tradeHash, address indexed token, uint256 amount);
    event CloseTradeAddLiquidity(address indexed token, uint256 amount);
    event ExecuteCloseRejected(
        address indexed user,
        bytes32 indexed tradeHash,
        ExecutionType executionType,
        uint64 execPrice,
        uint64 marketPrice
    );

    enum ExecutionType {
        TP,
        SL,
        LIQ
    }

    struct TpSlOrLiq {
        bytes32 tradeHash;
        uint64 price;
        ExecutionType executionType;
    }

    struct TpSlOrLiqWithPyth {
        bytes32 tradeHash;
        ExecutionType executionType;
        bytes32 priceId;
        bytes priceUpdateData;
    }

    struct SettleToken {
        address token;
        uint256 amount;
        uint8 decimals;
    }

    function closeTradeCallback(bytes32 tradeHash, uint256 upperPrice, uint256 lowerPrice) external;

    function executeTpSlOrLiq(TpSlOrLiq[] calldata) external;

    function executeTpSlOrLiq(TpSlOrLiqWithPyth[] calldata) external payable;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;
import "../dependencies/ArbSys.sol";

type Price8 is uint64;
type Qty10 is uint80;
type Usd18 is uint96;

library Constants {
    ArbSys public constant arbSys = ArbSys(address(100));

    function currentBlockNumber() internal view returns (uint256) {
        if (address(arbSys).code.length > 0) {
            return arbSys.arbBlockNumber();
        }
        return block.number;
    }

    /*-------------------------------- Role --------------------------------*/
    // 0x0000000000000000000000000000000000000000000000000000000000000000
    bytes32 constant DEFAULT_ADMIN_ROLE = 0x00;
    // 0xa49807205ce4d355092ef5a8a18f56e8913cf4a201fbe287825b095693c21775
    bytes32 constant ADMIN_ROLE = keccak256("ADMIN_ROLE");
    // 0xfc425f2263d0df187444b70e47283d622c70181c5baebb1306a01edba1ce184c
    bytes32 constant DEPLOYER_ROLE = keccak256("DEPLOYER_ROLE");
    // 0x62150a51582c26f4255242a3c4ca35fb04250e7315069523d650676aed01a56a
    bytes32 constant TOKEN_OPERATOR_ROLE = keccak256("TOKEN_OPERATOR_ROLE");
    // 0xa6fbd0d4ef0ac50b4de984ab8f303863596293cce6d67dd6111979bcf56abe74
    bytes32 constant STAKE_OPERATOR_ROLE = keccak256("STAKE_OPERATOR_ROLE");
    // 0xc24d2c87036c9189cc45e221d5dff8eaffb4966ee49ea36b4ffc88a2d85bf890
    bytes32 constant PRICE_FEED_OPERATOR_ROLE = keccak256("PRICE_FEED_OPERATOR_ROLE");
    // 0x04fcf77d802b9769438bfcbfc6eae4865484c9853501897657f1d28c3f3c603e
    bytes32 constant PAIR_OPERATOR_ROLE = keccak256("PAIR_OPERATOR_ROLE");
    // 0xfc8737ab85eb45125971625a9ebdb75cc78e01d5c1fa80c4c6e5203f47bc4fab
    bytes32 constant KEEPER_ROLE = keccak256("KEEPER_ROLE");
    // 0x4e89f34ce8e0125b1b19130806ace319a8a06b7e1b4d6ef98c0eac043b6f119a
    bytes32 constant PREDICTION_KEEPER_ROLE = keccak256("PREDICTION_KEEPER_ROLE");
    // 0x7d867aa9d791a9a4be418f90a2f248aa2c5f1348317792a6f6412f94df9819f7
    bytes32 constant PRICE_FEEDER_ROLE = keccak256("PRICE_FEEDER_ROLE");
    // 0x8227712ef8ad39d0f26f06731ef0df8665eb7ada7f41b1ee089adf3c238862a2
    bytes32 constant MONITOR_ROLE = keccak256("MONITOR_ROLE");
    // 0x35435f8e4f6e13c77fa1de984cb59ae76523c1b3d64ad415287dcd1b0a4cdc14
    bytes32 constant PYTH_PRICE_FEEDER_ROLE = keccak256("PYTH_PRICE_FEEDER_ROLE");

    /*-------------------------------- Decimals --------------------------------*/
    uint8 public constant PRICE_DECIMALS = 8;
    uint8 public constant QTY_DECIMALS = 10;
    uint8 public constant USD_DECIMALS = 18;

    uint16 public constant BASIS_POINTS_DIVISOR = 1e4;
    uint16 public constant MAX_LEVERAGE = 1e3;
    int256 public constant FUNDING_FEE_RATE_DIVISOR = 1e18;
    uint8 public constant FEED_DELAY_BLOCK = 200;
    uint8 public constant MAX_REQUESTS_PER_PAIR_IN_BLOCK = 100;
    uint256 public constant TIME_LOCK_DELAY = 24 hours;
    uint256 public constant TIME_LOCK_GRACE_PERIOD = 48 hours;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import "./ITradingPortal.sol";
import "./ITradingClose.sol";

/*
|-----------> 8 bit <-----------|
|---|---|---|---|---|---|---|---|
|   |   |   |   |   |   | 1 | 0 |
|---|---|---|---|---|---|---|---|
*/
enum FeatureSwitches {
    AS_MARGIN,
    AS_BET
}

struct LpItem {
    address tokenAddress;
    int256 value;
    uint8 decimals;
    int256 valueUsd; // decimals = 18
    uint16 targetWeight;
    uint16 feeBasisPoints;
    uint16 taxBasisPoints;
    bool dynamicFee;
}

interface IVault {
    event CloseTradeRemoveLiquidity(address indexed token, uint256 amount);

    struct Token {
        address tokenAddress;
        uint16 weight;
        uint16 feeBasisPoints;
        uint16 taxBasisPoints;
        bool stable;
        bool dynamicFee;
        bool asMargin;
        bool asBet;
    }

    struct MarginToken {
        address token;
        bool switchOn;
        uint8 decimals;
        uint256 price;
    }

    function addToken(
        address tokenAddress,
        uint16 feeBasisPoints,
        uint16 taxBasisPoints,
        bool stable,
        bool dynamicFee,
        bool asMargin,
        bool asBet,
        uint16[] calldata weights
    ) external;

    function removeToken(address tokenAddress, uint16[] calldata weights) external;

    function updateToken(address tokenAddress, uint16 feeBasisPoints, uint16 taxBasisPoints, bool dynamicFee) external;

    function updateTokenFeature(address tokenAddress, bool asMargin, bool asBet) external;

    function changeWeight(uint16[] calldata weights) external;

    function tokensV3() external view returns (Token[] memory);

    function getTokenByAddress(address tokenAddress) external view returns (Token memory);

    function getTokenForTrading(address tokenAddress) external view returns (MarginToken memory);

    function getTokenForPrediction(address tokenAddress) external view returns (MarginToken memory);

    function itemValue(address token) external view returns (LpItem memory lpItem);

    function totalValue() external view returns (LpItem[] memory lpItems);

    function getTotalValueUsd() external view returns (int256);

    function increase(address token, uint256 amounts) external;

    function decreaseByCloseTrade(address token, uint256 amount) external returns (ITradingClose.SettleToken[] memory);

    function decrease(address token, uint256 amount) external;

    function maxWithdrawAbleUsd() external view returns (int256);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import {SlippageType, SlippageConfigView} from "./ISlippageManager.sol";

interface ITradingCore {
    event UpdatePairPositionInfo(
        address indexed pairBase,
        uint256 lastBlock,
        uint256 longQty,
        uint256 shortQty,
        int256 longAccFundingFeePerShare,
        uint64 lpLongAvgPrice,
        uint64 lpShortAvgPrice
    );
    event UpdatePairAccFundingFeePerShare(
        address indexed pairBase, uint256 lastBlock, int256 longAccFundingFeePerShare, uint256 marketPrice
    );
    event AddMarginPoolBalance(address indexed funder, address indexed token, uint256 amount);

    struct PairQty {
        uint256 longQty;
        uint256 shortQty;
    }

    struct PairPositionInfo {
        uint256 lastFundingFeeBlock;
        uint256 longQty; // 1e10
        uint256 shortQty; // 1e10
        // shortAcc = longAcc * -1
        int256 longAccFundingFeePerShare; // 1e18
        uint64 lpLongAvgPrice; // 1e8
        address pairBase;
        uint16 pairIndex;
        uint64 lpShortAvgPrice;
    }

    struct LpMarginTokenUnPnl {
        address token;
        int256 unPnlUsd;
    }

    struct MarginPct {
        address token;
        uint256 pct; // 1e4
    }

    function updatePairPositionInfo(
        address pairBase,
        uint256 userPrice,
        uint256 marketPrice,
        uint256 qty,
        bool isLong,
        bool isOpen
    ) external returns (int256 longAccFundingFeePerShare);

    function updatePairPositionInfo(address pairBase) external;

    function addMarginPoolBalance(address token, uint256 amount) external payable;

    function getPairQty(address pairBase) external view returns (PairQty memory);

    function slippagePrice(address pairBase, uint256 marketPrice, uint256 qty, bool isLong)
        external
        view
        returns (uint256);

    function slippagePrice(
        PairQty memory pairQty,
        SlippageConfigView memory sc,
        uint256 marketPrice,
        uint256 qty,
        bool isLong
    ) external pure returns (uint256);

    function triggerPrice(address pairBase, uint256 limitPrice, uint256 qty, bool isLong)
        external
        view
        returns (uint256);

    function triggerPrice(
        PairQty memory pairQty,
        SlippageConfigView memory sc,
        uint256 limitPrice,
        uint256 qty,
        bool isLong
    ) external pure returns (uint256);

    function lastLongAccFundingFeePerShare(address pairBase) external view returns (int256);

    function lpUnrealizedPnlTotalUsd() external view returns (int256 totalUsd);

    function lpUnrealizedPnlUsd() external view returns (int256 totalUsd, LpMarginTokenUnPnl[] memory);

    function lpUnrealizedPnlUsd(address targetToken) external view returns (int256 totalUsd, int256 tokenUsd);

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

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

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    enum Rounding {
        Down, // Toward negative infinity
        Up, // Toward infinity
        Zero // Toward zero
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds up instead
     * of rounding down.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
     * with further edits by Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod0 := mul(x, y)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1, "Math: mulDiv overflow");

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
            // See https://cs.stackexchange.com/q/138556/92363.

            // Does not overflow because the denominator cannot be zero at this stage in the function.
            uint256 twos = denominator & (~denominator + 1);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
            // in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256, rounded down, of a positive value.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

/*//////////////////////////////////////////////////////////////////////////
                                TYPE DEFINITION
//////////////////////////////////////////////////////////////////////////*/

/// @notice Counter type that bypasses checked arithmetic, designed to be used in for loops.
/// @dev Here's an example:
///
/// ```
/// for (UC i = ZERO; i < uc(100); i = i + ONE) {
///   i.into(); // or `i.unwrap()`
/// }
/// ```
type UC is uint256;

/*//////////////////////////////////////////////////////////////////////////
                                    CONSTANTS
//////////////////////////////////////////////////////////////////////////*/

// Exports 1 as a typed constant.
UC constant ONE = UC.wrap(1);

// Exports 0 as a typed constant.
UC constant ZERO = UC.wrap(0);

/*//////////////////////////////////////////////////////////////////////////
                                LOGIC FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/

using { add as +, lt as <, lte as <= } for UC global;

/// @notice Sums up `x` and `y` without checked arithmetic.
function add(UC x, UC y) pure returns (UC) {
    unchecked {
        return UC.wrap(UC.unwrap(x) + UC.unwrap(y));
    }
}

/// @notice Checks if `x` is lower than `y`.
function lt(UC x, UC y) pure returns (bool) {
    return UC.unwrap(x) < UC.unwrap(y);
}

/// @notice Checks if `x` is lower than or equal to `y`.
function lte(UC x, UC y) pure returns (bool) {
    return UC.unwrap(x) <= UC.unwrap(y);
}

/*//////////////////////////////////////////////////////////////////////////
                                CASTING FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/

using { into, unwrap } for UC global;

/// @notice Alias for the `UC.unwrap` function.
function into(UC x) pure returns (uint256 result) {
    result = UC.unwrap(x);
}

/// @notice Alias for the `UC.wrap` function.
function uc(uint256 x) pure returns (UC result) {
    result = UC.wrap(x);
}

/// @notice Alias for the `UC.unwrap` function.
function unwrap(UC x) pure returns (uint256 result) {
    result = UC.unwrap(x);
}

/// @notice Alias for the `UC.wrap` function.
function wrap(uint256 x) pure returns (UC result) {
    result = UC.wrap(x);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 *
 * ==== Security Considerations
 *
 * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature
 * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be
 * considered as an intention to spend the allowance in any specific way. The second is that because permits have
 * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should
 * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be
 * generally recommended is:
 *
 * ```solidity
 * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {
 *     try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}
 *     doThing(..., value);
 * }
 *
 * function doThing(..., uint256 value) public {
 *     token.safeTransferFrom(msg.sender, address(this), value);
 *     ...
 * }
 * ```
 *
 * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of
 * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also
 * {SafeERC20-safeTransferFrom}).
 *
 * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so
 * contracts should have entry points that don't rely on permit.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     *
     * CAUTION: See Security Considerations above.
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

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

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

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import "../../utils/TransferHelper.sol";
import {ZERO, ONE, UC, uc, into} from "unchecked-counter/src/UC.sol";

library LibBrokerManager {
    using TransferHelper for address;

    bytes32 constant BROKER_MANAGER_STORAGE_POSITION = keccak256("apollox.broker.manager.storage");

    struct Broker {
        string name;
        string url;
        address receiver;
        uint24 id;
        uint24 brokerIndex;
        uint16 commissionP;
        uint16 daoShareP;
        uint16 alpPoolP;
    }

    struct Commission {
        uint256 total;
        uint256 pending;
    }

    struct BrokerManagerStorage {
        mapping(uint24 id => Broker) brokers;
        uint24[] brokerIds;
        mapping(uint24 id => mapping(address token => Commission)) brokerCommissions;
        // id => tokens
        mapping(uint24 id => address[]) brokerCommissionTokens;
        // token => total amount
        mapping(address => uint256) allPendingCommissions;
        uint24 defaultBroker;
    }

    function brokerManagerStorage() internal pure returns (BrokerManagerStorage storage bms) {
        bytes32 position = BROKER_MANAGER_STORAGE_POSITION;
        assembly {
            bms.slot := position
        }
    }

    event AddBroker(uint24 indexed id, Broker broker);
    event RemoveBroker(uint24 indexed id);
    event UpdateBrokerCommissionP(uint24 indexed id, uint16 commissionP, uint16 daoShareP, uint16 alpPoolP);
    event UpdateBrokerReceiver(uint24 indexed id, address oldReceiver, address receiver);
    event UpdateBrokerName(uint24 indexed id, string oldName, string name);
    event UpdateBrokerUrl(uint24 indexed id, string oldUrl, string url);
    event WithdrawBrokerCommission(uint24 indexed id, address indexed token, address indexed operator, uint256 amount);

    function initialize(uint24 id, address receiver, string calldata name, string calldata url) internal {
        BrokerManagerStorage storage bms = brokerManagerStorage();
        require(bms.defaultBroker == 0, "LibBrokerManager: Already initialized");
        bms.defaultBroker = id;
        addBroker(id, 1e4, 0, 0, receiver, name, url);
    }

    function addBroker(
        uint24 id,
        uint16 commissionP,
        uint16 daoShareP,
        uint16 alpPoolP,
        address receiver,
        string calldata name,
        string calldata url
    ) internal {
        BrokerManagerStorage storage bms = brokerManagerStorage();
        require(bms.brokers[id].receiver == address(0), "LibBrokerManager: Broker already exists");
        Broker memory b =
            Broker(name, url, receiver, id, uint24(bms.brokerIds.length), commissionP, daoShareP, alpPoolP);
        bms.brokers[id] = b;
        bms.brokerIds.push(id);
        emit AddBroker(id, b);
    }

    function _checkBrokerExist(BrokerManagerStorage storage bms, uint24 id) private view returns (Broker storage) {
        Broker storage b = bms.brokers[id];
        require(b.receiver != address(0), "LibBrokerManager: broker does not exist");
        return b;
    }

    function removeBroker(uint24 id) internal {
        BrokerManagerStorage storage bms = brokerManagerStorage();
        require(id != bms.defaultBroker, "LibBrokerManager: Default broker cannot be removed.");
        withdrawCommission(id);

        uint24[] storage brokerIds = bms.brokerIds;
        uint256 last = brokerIds.length - 1;
        uint256 removeBrokerIndex = bms.brokers[id].brokerIndex;
        if (removeBrokerIndex != last) {
            uint24 lastBrokerId = brokerIds[last];
            brokerIds[removeBrokerIndex] = lastBrokerId;
            bms.brokers[lastBrokerId].brokerIndex = uint24(removeBrokerIndex);
        }
        brokerIds.pop();
        delete bms.brokers[id];
        emit RemoveBroker(id);
    }

    function updateBrokerCommissionP(uint24 id, uint16 commissionP, uint16 daoShareP, uint16 alpPoolP) internal {
        BrokerManagerStorage storage bms = brokerManagerStorage();
        Broker storage b = _checkBrokerExist(bms, id);
        b.commissionP = commissionP;
        b.daoShareP = daoShareP;
        b.alpPoolP = alpPoolP;
        emit UpdateBrokerCommissionP(id, commissionP, daoShareP, alpPoolP);
    }

    function updateBrokerReceiver(uint24 id, address receiver) internal {
        BrokerManagerStorage storage bms = brokerManagerStorage();
        Broker storage b = _checkBrokerExist(bms, id);
        address oldReceiver = b.receiver;
        b.receiver = receiver;
        emit UpdateBrokerReceiver(id, oldReceiver, receiver);
    }

    function updateBrokerName(uint24 id, string calldata name) internal {
        BrokerManagerStorage storage bms = brokerManagerStorage();
        Broker storage b = _checkBrokerExist(bms, id);
        string memory oldName = b.name;
        b.name = name;
        emit UpdateBrokerName(id, oldName, name);
    }

    function updateBrokerUrl(uint24 id, string calldata url) internal {
        BrokerManagerStorage storage bms = brokerManagerStorage();
        Broker storage b = _checkBrokerExist(bms, id);
        string memory oldUrl = b.url;
        b.url = url;
        emit UpdateBrokerUrl(id, oldUrl, url);
    }

    function withdrawCommission(uint24 id) internal {
        BrokerManagerStorage storage bms = brokerManagerStorage();
        Broker storage b = _checkBrokerExist(bms, id);
        address operator = msg.sender;
        address[] memory tokens = bms.brokerCommissionTokens[id];
        for (UC i = ZERO; i < uc(tokens.length); i = i + ONE) {
            Commission storage c = bms.brokerCommissions[id][tokens[i.into()]];
            if (c.pending > 0) {
                uint256 pending = c.pending;
                c.pending = 0;
                bms.allPendingCommissions[tokens[i.into()]] -= pending;
                tokens[i.into()].transfer(b.receiver, pending);
                emit WithdrawBrokerCommission(id, tokens[i.into()], operator, pending);
            }
        }
    }

    function _getBrokerOrDefault(BrokerManagerStorage storage bms, uint24 id) private view returns (Broker memory) {
        Broker memory b = bms.brokers[id];
        if (b.receiver != address(0)) {
            return b;
        } else {
            return bms.brokers[bms.defaultBroker];
        }
    }

    function updateBrokerCommission(address token, uint256 feeAmount, uint24 id)
        internal
        returns (uint256 commission, uint24 brokerId, uint256 daoAmount, uint256 alpPoolAmount)
    {
        BrokerManagerStorage storage bms = brokerManagerStorage();

        Broker memory b = _getBrokerOrDefault(bms, id);
        commission = feeAmount * b.commissionP / 1e4;
        if (commission > 0) {
            Commission storage c = bms.brokerCommissions[b.id][token];
            if (c.total == 0) {
                bms.brokerCommissionTokens[b.id].push(token);
            }
            c.total += commission;
            c.pending += commission;
            bms.allPendingCommissions[token] += commission;
        }
        return (commission, b.id, feeAmount * b.daoShareP / 1e4, feeAmount * b.alpPoolP / 1e4);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import "./IPairsManager.sol";
import "../libraries/LibPairsManager.sol";

enum SlippageType {
    FIXED,
    ONE_PERCENT_DEPTH,
    NET_POSITION,
    THRESHOLD
}

struct SlippageConfigView {
    uint256 onePercentDepthAboveUsd;
    uint256 onePercentDepthBelowUsd;
    uint16 slippageLongP; // 1e4
    uint16 slippageShortP; // 1e4
    uint256 longThresholdUsd;
    uint256 shortThresholdUsd;
    SlippageType slippageType;
}

interface ISlippageManager {
    event AddSlippageConfig(
        uint16 indexed index,
        SlippageType indexed slippageType,
        uint256 onePercentDepthAboveUsd,
        uint256 onePercentDepthBelowUsd,
        uint16 slippageLongP,
        uint16 slippageShortP,
        uint256 longThresholdUsd,
        uint256 shortThresholdUsd,
        string name
    );
    event RemoveSlippageConfig(uint16 indexed index);
    event UpdateSlippageConfig(
        uint16 indexed index,
        SlippageType indexed slippageType,
        uint256 onePercentDepthAboveUsd,
        uint256 onePercentDepthBelowUsd,
        uint16 slippageLongP,
        uint16 slippageShortP,
        uint256 longThresholdUsd,
        uint256 shortThresholdUsd
    );

    struct UpdateSlippageConfigParam {
        uint16 index;
        SlippageType slippageType;
        uint256 onePercentDepthAboveUsd;
        uint256 onePercentDepthBelowUsd;
        uint16 slippageLongP; // 1e4
        uint16 slippageShortP; // 1e4
        uint256 longThresholdUsd;
        uint256 shortThresholdUsd;
    }

    function addSlippageConfig(string calldata name, uint16 index, SlippageConfigView calldata sc) external;

    function removeSlippageConfig(uint16 index) external;

    function updateSlippageConfig(UpdateSlippageConfigParam calldata param) external;

    function batchUpdateSlippageConfig(UpdateSlippageConfigParam[] calldata params) external;

    function getSlippageConfigByIndex(uint16 index)
        external
        view
        returns (LibPairsManager.SlippageConfig memory, IPairsManager.PairSimple[] memory);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import "./LibFeeManager.sol";
import "../interfaces/IPriceFacade.sol";
import "../interfaces/ITradingCore.sol";
import "../interfaces/IPairsManager.sol";
import {SlippageType} from "../interfaces/ISlippageManager.sol";
import {ZERO, ONE, UC, uc, into} from "unchecked-counter/src/UC.sol";

library LibPairsManager {
    bytes32 constant PAIRS_MANAGER_STORAGE_POSITION = keccak256("apollox.pairs.manager.storage");

    /*
       tier    notionalUsd     maxLeverage      initialLostP        liqLostP
        1      (0 ~ 10,000]        20              95%                97.5%
        2    (10,000 ~ 50,000]     10              90%                 95%
        3    (50,000 ~ 100,000]     5              80%                 90%
        4    (100,000 ~ 200,000]    3              75%                 85%
        5    (200,000 ~ 500,000]    2              60%                 75%
        6    (500,000 ~ 800,000]    1              40%                 50%
    */
    struct LeverageMargin {
        uint256 notionalUsd;
        uint16 tier;
        uint16 maxLeverage;
        uint16 initialLostP; // 1e4
        uint16 liqLostP; // 1e4
    }

    struct SlippageConfig {
        string name;
        uint256 onePercentDepthAboveUsd;
        uint256 onePercentDepthBelowUsd;
        uint16 slippageLongP; // 1e4
        uint16 slippageShortP; // 1e4
        uint16 index;
        SlippageType slippageType;
        bool enable;
        uint256 longThresholdUsd;
        uint256 shortThresholdUsd;
    }

    struct Pair {
        // BTC/USD
        string name;
        // BTC address
        address base;
        uint16 basePosition;
        IPairsManager.PairType pairType;
        IPairsManager.PairStatus status;

        uint16 slippageConfigIndex;
        uint16 slippagePosition;

        uint16 feeConfigIndex;
        uint16 feePosition;

        uint256 maxLongOiUsd;
        uint256 maxShortOiUsd;
        uint256 fundingFeePerBlockP; // 1e18
        uint256 minFundingFeeR; // 1e18
        uint256 maxFundingFeeR; // 1e18
        // tier => LeverageMargin
        mapping(uint16 => LeverageMargin) leverageMargins;
        uint16 maxTier;

        uint40 longHoldingFeeRate; // 1e12
        uint40 shortHoldingFeeRate; // 1e12
    }

    struct PairsManagerStorage {
        // 0/1/2/3/.../ => SlippageConfig
        mapping(uint16 => SlippageConfig) slippageConfigs;
        // SlippageConfig index => pairs.base[]
        mapping(uint16 => address[]) slippageConfigPairs;
        mapping(address => Pair) pairs;
        address[] pairBases;
    }

    function pairsManagerStorage() internal pure returns (PairsManagerStorage storage pms) {
        bytes32 position = PAIRS_MANAGER_STORAGE_POSITION;
        assembly {
            pms.slot := position
        }
    }

    event AddPair(
        address indexed base,
        IPairsManager.PairType indexed pairType,
        IPairsManager.PairStatus indexed status,
        uint16 slippageConfigIndex,
        uint16 feeConfigIndex,
        string name,
        LeverageMargin[] leverageMargins
    );
    event UpdatePairMaxOi(
        address indexed base,
        uint256 oldMaxLongOiUsd,
        uint256 oldMaxShortOiUsd,
        uint256 maxLongOiUsd,
        uint256 maxShortOiUsd
    );
    event UpdatePairHoldingFeeRate(
        address indexed base, uint40 oldLongRate, uint40 oldShortRate, uint40 longRate, uint40 shortRate
    );
    event UpdatePairFundingFeeConfig(
        address indexed base,
        uint256 oldFundingFeePerBlockP,
        uint256 oldMinFundingFeeR,
        uint256 oldMaxFundingFeeR,
        uint256 fundingFeePerBlockP,
        uint256 minFundingFeeR,
        uint256 maxFundingFeeR
    );
    event RemovePair(address indexed base);
    event UpdatePairStatus(
        address indexed base, IPairsManager.PairStatus indexed oldStatus, IPairsManager.PairStatus indexed status
    );
    event UpdatePairSlippage(
        address indexed base, uint16 indexed oldSlippageConfigIndexed, uint16 indexed slippageConfigIndex
    );
    event UpdatePairFee(address indexed base, uint16 indexed oldFeeConfigIndex, uint16 indexed feeConfigIndex);
    event UpdatePairType(
        address indexed base, IPairsManager.PairType indexed oldType, IPairsManager.PairType indexed pairType
    );
    event UpdatePairLeverageMargin(address indexed base, LeverageMargin[] leverageMargins);

    function addPair(
        IPairsManager.PairSimple memory ps,
        uint16 slippageConfigIndex,
        uint16 feeConfigIndex,
        LeverageMargin[] calldata leverageMargins
    ) internal {
        PairsManagerStorage storage pms = pairsManagerStorage();
        Pair storage pair = pms.pairs[ps.base];
        require(pair.base == address(0), "LibPairsManager: Pair already exists");
        require(
            IPriceFacade(address(this)).getPrice(ps.base) > 0,
            "LibPairsManager: No price feed has been configured for the pair"
        );
        {
            SlippageConfig memory slippageConfig = pms.slippageConfigs[slippageConfigIndex];
            require(slippageConfig.enable, "LibPairsManager: Slippage configuration is not available");
            (LibFeeManager.FeeConfig memory feeConfig, address[] storage feePairs) =
                LibFeeManager.getFeeConfigByIndex(feeConfigIndex);
            require(feeConfig.enable, "LibPairsManager: Fee configuration is not available");

            pair.slippageConfigIndex = slippageConfigIndex;
            address[] storage slippagePairs = pms.slippageConfigPairs[slippageConfigIndex];
            pair.slippagePosition = uint16(slippagePairs.length);
            slippagePairs.push(ps.base);

            pair.feeConfigIndex = feeConfigIndex;
            pair.feePosition = uint16(feePairs.length);
            feePairs.push(ps.base);
        }
        pair.name = ps.name;
        pair.base = ps.base;
        pair.basePosition = uint16(pms.pairBases.length);
        pms.pairBases.push(ps.base);
        pair.pairType = ps.pairType;
        pair.status = ps.status;
        pair.maxTier = uint16(leverageMargins.length);
        for (UC i = ONE; i <= uc(leverageMargins.length); i = i + ONE) {
            pair.leverageMargins[uint16(i.into())] = leverageMargins[uint16(i.into() - 1)];
        }
        emit AddPair(ps.base, ps.pairType, ps.status, slippageConfigIndex, feeConfigIndex, ps.name, leverageMargins);
    }

    function updatePairMaxOi(address base, uint256 maxLongOiUsd, uint256 maxShortOiUsd) internal {
        PairsManagerStorage storage pms = pairsManagerStorage();
        Pair storage pair = pms.pairs[base];
        require(pair.base != address(0), "LibPairsManager: Pair does not exist");

        uint256 oldMaxLongOiUsd = pair.maxLongOiUsd;
        uint256 oldMaxShortOiUsd = pair.maxShortOiUsd;
        pair.maxLongOiUsd = maxLongOiUsd;
        pair.maxShortOiUsd = maxShortOiUsd;
        emit UpdatePairMaxOi(base, oldMaxLongOiUsd, oldMaxShortOiUsd, maxLongOiUsd, maxShortOiUsd);
    }

    function updatePairFundingFeeConfig(
        address base,
        uint256 fundingFeePerBlockP,
        uint256 minFundingFeeR,
        uint256 maxFundingFeeR
    ) internal {
        require(maxFundingFeeR > minFundingFeeR, "LibPairsManager: fundingFee parameter is invalid");
        PairsManagerStorage storage pms = pairsManagerStorage();
        Pair storage pair = pms.pairs[base];
        require(pair.base != address(0), "LibPairsManager: Pair does not exist");

        ITradingCore(address(this)).updatePairPositionInfo(base);

        uint256 oldFundingFeePerBlockP = pair.fundingFeePerBlockP;
        uint256 oldMinFundingFeeR = pair.minFundingFeeR;
        uint256 oldMaxFundingFeeR = pair.maxFundingFeeR;
        pair.fundingFeePerBlockP = fundingFeePerBlockP;
        pair.minFundingFeeR = minFundingFeeR;
        pair.maxFundingFeeR = maxFundingFeeR;
        emit UpdatePairFundingFeeConfig(
            base,
            oldFundingFeePerBlockP,
            oldMinFundingFeeR,
            oldMaxFundingFeeR,
            fundingFeePerBlockP,
            minFundingFeeR,
            maxFundingFeeR
        );
    }

    function updatePairHoldingFeeRate(address base, uint40 longHoldingFeeRate, uint40 shortHoldingFeeRate) internal {
        PairsManagerStorage storage pms = pairsManagerStorage();
        Pair storage pair = pms.pairs[base];
        require(pair.base != address(0), "LibPairsManager: Pair does not exist");

        uint40 oldLongRate = pair.longHoldingFeeRate;
        uint40 oldShortRate = pair.shortHoldingFeeRate;
        pair.longHoldingFeeRate = longHoldingFeeRate;
        pair.shortHoldingFeeRate = shortHoldingFeeRate;
        emit UpdatePairHoldingFeeRate(base, oldLongRate, oldShortRate, longHoldingFeeRate, shortHoldingFeeRate);
    }

    function removePair(address base) internal {
        PairsManagerStorage storage pms = pairsManagerStorage();
        Pair storage pair = pms.pairs[base];
        require(pair.base != address(0), "LibPairsManager: Pair does not exist");

        ITradingCore.PairQty memory pairQty = ITradingCore(address(this)).getPairQty(base);
        require(pairQty.longQty == 0 && pairQty.shortQty == 0, "LibPairsManager: Position is not 0");

        address[] storage slippagePairs = pms.slippageConfigPairs[pair.slippageConfigIndex];
        uint256 lastPositionSlippage = slippagePairs.length - 1;
        uint256 slippagePosition = pair.slippagePosition;
        if (slippagePosition != lastPositionSlippage) {
            address lastBase = slippagePairs[lastPositionSlippage];
            slippagePairs[slippagePosition] = lastBase;
            pms.pairs[lastBase].slippagePosition = uint16(slippagePosition);
        }
        slippagePairs.pop();

        (, address[] storage feePairs) = LibFeeManager.getFeeConfigByIndex(pair.feeConfigIndex);
        uint256 lastPositionFee = feePairs.length - 1;
        uint256 feePosition = pair.feePosition;
        if (feePosition != lastPositionFee) {
            address lastBase = feePairs[lastPositionFee];
            feePairs[feePosition] = lastBase;
            pms.pairs[lastBase].feePosition = uint16(feePosition);
        }
        feePairs.pop();

        address[] storage pairBases = pms.pairBases;
        uint256 lastPositionBase = pairBases.length - 1;
        uint256 basePosition = pair.basePosition;
        if (basePosition != lastPositionBase) {
            address lastBase = pairBases[lastPositionBase];
            pairBases[basePosition] = lastBase;
            pms.pairs[lastBase].basePosition = uint16(basePosition);
        }
        pairBases.pop();
        // Removing a pair does not delete the leverageMargins mapping data from the Pair struct.
        // If the pair is added again, a new leverageMargins value will be set during the addition,
        // which will overwrite the previous old value.
        delete pms.pairs[base];
        emit RemovePair(base);
    }

    function updatePairStatus(address base, IPairsManager.PairStatus status) internal {
        Pair storage pair = pairsManagerStorage().pairs[base];
        require(pair.base != address(0), "LibPairsManager: Pair does not exist");
        require(pair.status != status, "LibPairsManager: No change in status, no modification required");
        IPairsManager.PairStatus oldStatus = pair.status;
        pair.status = status;
        emit UpdatePairStatus(base, oldStatus, status);
    }

    function updatePairType(address base, IPairsManager.PairType pairType) internal {
        Pair storage pair = pairsManagerStorage().pairs[base];
        require(pair.base != address(0), "LibPairsManager: Pair does not exist");
        require(pair.pairType != pairType, "LibPairsManager: No change in pairType, no modification required");
        IPairsManager.PairType oldType = pair.pairType;
        pair.pairType = pairType;
        emit UpdatePairType(base, oldType, pairType);
    }

    function batchUpdatePairStatus(IPairsManager.PairType pairType, IPairsManager.PairStatus status) internal {
        PairsManagerStorage storage pms = pairsManagerStorage();
        address[] memory pairBases = pms.pairBases;
        for (UC i = ZERO; i < uc(pairBases.length); i = i + ONE) {
            Pair storage pair = pms.pairs[pairBases[i.into()]];
            if (pair.pairType == pairType) {
                IPairsManager.PairStatus oldStatus = pair.status;
                pair.status = status;
                emit UpdatePairStatus(pair.base, oldStatus, status);
            }
        }
    }

    function updatePairSlippage(address base, uint16 slippageConfigIndex) internal {
        PairsManagerStorage storage pms = pairsManagerStorage();
        Pair storage pair = pms.pairs[base];
        require(pair.base != address(0), "LibPairsManager: Pair does not exist");
        SlippageConfig memory config = pms.slippageConfigs[slippageConfigIndex];
        require(config.enable, "LibPairsManager: Slippage configuration is not available");

        uint16 oldSlippageConfigIndex = pair.slippageConfigIndex;
        address[] storage oldSlippagePairs = pms.slippageConfigPairs[oldSlippageConfigIndex];
        uint256 lastPositionSlippage = oldSlippagePairs.length - 1;
        uint256 oldSlippagePosition = pair.slippagePosition;
        if (oldSlippagePosition != lastPositionSlippage) {
            pms.pairs[oldSlippagePairs[lastPositionSlippage]].slippagePosition = uint16(oldSlippagePosition);
            oldSlippagePairs[oldSlippagePosition] = oldSlippagePairs[lastPositionSlippage];
        }
        oldSlippagePairs.pop();

        pair.slippageConfigIndex = slippageConfigIndex;
        address[] storage slippagePairs = pms.slippageConfigPairs[slippageConfigIndex];
        pair.slippagePosition = uint16(slippagePairs.length);
        slippagePairs.push(base);
        emit UpdatePairSlippage(base, oldSlippageConfigIndex, slippageConfigIndex);
    }

    function updatePairFee(address base, uint16 feeConfigIndex) internal {
        PairsManagerStorage storage pms = pairsManagerStorage();
        Pair storage pair = pms.pairs[base];
        require(pair.base != address(0), "LibPairsManager: Pair does not exist");
        (LibFeeManager.FeeConfig memory feeConfig, address[] storage feePairs) =
            LibFeeManager.getFeeConfigByIndex(feeConfigIndex);
        require(feeConfig.enable, "LibPairsManager: Fee configuration is not available");

        uint16 oldFeeConfigIndex = pair.feeConfigIndex;
        (, address[] storage oldFeePairs) = LibFeeManager.getFeeConfigByIndex(oldFeeConfigIndex);
        uint256 lastPositionFee = oldFeePairs.length - 1;
        uint256 oldFeePosition = pair.feePosition;
        if (oldFeePosition != lastPositionFee) {
            pms.pairs[oldFeePairs[lastPositionFee]].feePosition = uint16(oldFeePosition);
            oldFeePairs[oldFeePosition] = oldFeePairs[lastPositionFee];
        }
        oldFeePairs.pop();

        pair.feeConfigIndex = feeConfigIndex;
        pair.feePosition = uint16(feePairs.length);
        feePairs.push(base);
        emit UpdatePairFee(base, oldFeeConfigIndex, feeConfigIndex);
    }

    function updatePairLeverageMargin(address base, LeverageMargin[] calldata leverageMargins) internal {
        PairsManagerStorage storage pms = pairsManagerStorage();
        Pair storage pair = pms.pairs[base];
        require(pair.base != address(0), "LibPairsManager: Pair does not exist");

        uint256 maxTier = pair.maxTier > leverageMargins.length ? pair.maxTier : leverageMargins.length;
        for (UC i = ONE; i <= uc(maxTier); i = i + ONE) {
            if (i <= uc(leverageMargins.length)) {
                pair.leverageMargins[uint16(i.into())] = leverageMargins[uint16(i.into() - 1)];
            } else {
                delete pair.leverageMargins[uint16(i.into())];
            }
        }
        pair.maxTier = uint16(leverageMargins.length);
        emit UpdatePairLeverageMargin(base, leverageMargins);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.19;

interface ArbSys {
    /**
     * @notice Get Arbitrum block number (distinct from L1 block number; Arbitrum genesis block has block number 0)
     * @return block number as int
     */
    function arbBlockNumber() external view returns (uint256);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import "./IBook.sol";
import "./ITrading.sol";

interface ITradingPortal is ITrading, IBook {
    event FundingFeeAddLiquidity(address indexed token, uint256 amount);
    event MarketPendingTrade(address indexed user, bytes32 indexed tradeHash, OpenDataInput trade);
    event UpdateTradeTp(address indexed user, bytes32 indexed tradeHash, uint256 oldTp, uint256 tp);
    event UpdateTradeSl(address indexed user, bytes32 indexed tradeHash, uint256 oldSl, uint256 sl);
    event UpdateMargin(address indexed user, bytes32 indexed tradeHash, uint256 beforeMargin, uint256 margin);

    function openMarketTrade(OpenDataInput memory openData) external returns (bytes32 tradeHash);

    function openMarketTradeBNB(OpenDataInput memory openData) external payable returns (bytes32 tradeHash);

    function updateTradeTp(bytes32 tradeHash, uint64 takeProfit) external;

    function updateTradeSl(bytes32 tradeHash, uint64 stopLoss) external;

    // stopLoss is allowed to be equal to 0, which means the sl setting is removed.
    // takeProfit must be greater than 0
    function updateTradeTpAndSl(bytes32 tradeHash, uint64 takeProfit, uint64 stopLoss) external;

    function settleLpFundingFee(uint256 lpReceiveFundingFeeUsd) external;

    function closeTrade(bytes32 tradeHash) external;

    function batchCloseTrade(bytes32[] calldata tradeHashes) external;

    function addMargin(bytes32 tradeHash, uint96 amount) external payable;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import {Period} from "./IPredictionManager.sol";

enum RequestType {
    CLOSE,
    OPEN,
    PREDICT,
    PREDICT_RELATIVE
}

interface IPriceFacade {
    struct Config {
        uint16 lowPriceGapP;
        uint16 highPriceGapP;
        uint16 maxDelay;
        uint16 triggerLowPriceGapP; // 1e4
        uint16 triggerHighPriceGapP; // 1e4
    }

    struct PriceCallbackParam {
        bytes32 requestId;
        uint64 price;
    }

    struct PriceCallbackPythParamV1 {
        bytes32 requestId;
        bytes32 priceId;
        bytes priceUpdateData;
    }

    struct PriceCallbackPythParam {
        bytes32 requestId;
        bytes32 priceId;
        bool reciprocalPrice;
        uint64 price;
    }

    event RequestRelativePrice(bytes32 indexed requestId, bytes32 indexed marketHash, Period period);
    event RelativePriceUpdated(bytes32 indexed requestId, bytes32 indexed marketHash);
    event RelativeRequestNotExist(bytes32 indexed requestId, bytes32 indexed marketHash);

    function setLowAndHighPriceGapP(uint16 lowPriceGapP, uint16 highPriceGapP) external;

    function setTriggerLowAndHighPriceGapP(uint16 triggerLowPriceGapP, uint16 triggerHighPriceGapP) external;

    function setMaxDelay(uint16 maxDelay) external;

    function getPriceFacadeConfig() external view returns (Config memory);

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

    function getPriceFromCacheOrOracle(address token) external view returns (uint64 price, uint40 updatedAt);

    function requestPrice(bytes32 tradeHash, address token, RequestType requestType) external;

    function requestRelativePrice(bytes32 id, bytes32 marketHash, Period period) external;

    function requestPriceCallback(bytes32 requestId, uint64 price) external;

    function requestPriceCallback(bytes32 requestId, bytes32 priceId, bytes calldata priceUpdateData) external;

    function batchRequestPriceCallback(PriceCallbackParam[] calldata params) external;

    function batchRequestPriceCallback(PriceCallbackPythParamV1[] calldata params) external;

    function batchRequestPriceCallback(PriceCallbackPythParam[] calldata requests, bytes[] calldata priceUpdateData)
        external
        payable;

    function confirmTriggerPrice(address token, uint64 price) external returns (bool, uint64, uint64);

    function requestRelativePriceCallback(bytes32 requestId, bytes32 marketHash, uint64[] calldata prices) external;

    /// @notice Pyth-based callback for relative entry prices.
    /// @dev `priceUpdateData` may contain updates for multiple price feeds in a single VAA.
    ///      Uses the stored canonical priceIds for the market; rejects if any are missing/duplicated.
    ///      Caller should pass enough `msg.value` to cover `pyth.getUpdateFee([priceUpdateData])` (excess is refunded).
    function requestRelativePriceCallback(bytes32 requestId, bytes32 marketHash, bytes calldata priceUpdateData)
        external
        payable;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

enum Period {
    MINUTE1,
    MINUTE5,
    MINUTE10,
    MINUTE15,
    MINUTE30,
    HOUR1,
    HOUR2,
    HOUR3,
    HOUR4,
    HOUR6,
    HOUR8,
    HOUR12,
    DAY1
}
enum PredictionPairStatus {
    AVAILABLE,
    CLOSE_ONLY,
    CLOSED
}

struct PredictionPeriod {
    uint256 maxUpUsd; // USD 1e18
    uint256 maxDownUsd; // USD 1e18
    Period period;
    PredictionPairStatus status;
    uint16 winRatio; // 1e4
    uint16 openFeeP; // 1e4
    uint16 winCloseFeeP; // 1e4
    uint16 loseCloseFeeP; // 1e4
}

interface IPredictionManager {
    event AddPredictionPair(address indexed base, string name, PredictionPeriod[] predictionPeriods);
    event RemovePredictionPair(address indexed base);
    event UpdatePredictionPairStatus(address indexed base, PredictionPairStatus status);
    event UpdatePredictionPairPeriodMaxCap(
        address indexed base, Period indexed period, uint256 maxUpUsd, uint256 maxDownUsd
    );
    event UpdatePredictionPairPeriodWinRatio(address indexed base, Period indexed period, uint16 winRatio);
    event UpdatePredictionPairPeriodFee(
        address indexed base, Period indexed period, uint16 openFeeP, uint16 winCloseFeeP, uint16 loseCloseFeeP
    );
    event AddPeriodForPredictionPair(address indexed base, PredictionPeriod[] predictionPeriods);
    event ReplacePredictionPairPeriod(address indexed base, PredictionPeriod[] predictionPeriods);
    event UpdatePredictionPairPythPriceId(address indexed base, bytes32 indexed priceId);

    struct PeriodCap {
        Period period;
        uint256 maxUpUsd; // USD 1e18
        uint256 maxDownUsd; // USD 1e18
    }

    struct PeriodWinRatio {
        Period period;
        uint16 winRatio;
    }

    struct PeriodFee {
        Period period;
        uint16 openFeeP; // 1e4
        uint16 winCloseFeeP; // 1e4
        uint16 loseCloseFeeP; // 1e4
    }

    struct PredictionPairView {
        string name;
        address base;
        PredictionPeriod[] predictionPeriods;
    }

    function addPredictionPair(address base, string calldata name, PredictionPeriod[] calldata predictionPeriods)
        external;

    function removePredictionPair(address base) external;

    function updatePredictionPairStatus(address base, PredictionPairStatus status) external;

    function updatePredictionPairMaxCap(address base, PeriodCap[] calldata periodCaps) external;

    function updatePredictionPairWinRatio(address base, PeriodWinRatio[] calldata periodWinRatios) external;

    function updatePredictionPairFee(address base, PeriodFee[] calldata periodFees) external;

    function addPeriodForPredictionPair(address base, PredictionPeriod[] calldata predictionPeriods) external;

    function replacePredictionPairPeriod(address base, PredictionPeriod[] calldata predictionPeriods) external;

    function updatePredictionPairPythPriceId(address base, bytes32 priceId) external;

    function getPredictionPairByBase(address base) external returns (PredictionPairView memory);

    function predictionPairs(uint256 start, uint8 size) external returns (PredictionPairView[] memory);

    function getPredictionPeriod(address base, Period period) external returns (PredictionPeriod memory);

    function getPredictionPairPythPriceId(address base) external view returns (bytes32);
}

{
  "remappings": [
    "@openzeppelin/=lib/openzeppelin-contracts/",
    "@chainlink/contracts/=lib/foundry-chainlink-toolkit/lib/chainlink-brownie-contracts/contracts/",
    "@pythnetwork/pyth-sdk-solidity/=lib/pyth-sdk-solidity/",
    "unchecked-counter/=unchecked-counter/",
    "chainlink-brownie-contracts/=lib/foundry-chainlink-toolkit/lib/chainlink-brownie-contracts/contracts/src/v0.6/vendor/@arbitrum/nitro-contracts/src/",
    "ds-test/=lib/foundry-chainlink-toolkit/lib/forge-std/lib/ds-test/src/",
    "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
    "forge-std/=lib/foundry-chainlink-toolkit/lib/forge-std/src/",
    "foundry-chainlink-toolkit/=lib/foundry-chainlink-toolkit/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/",
    "openzeppelin/=lib/openzeppelin-contracts/contracts/",
    "pyth-sdk-solidity/=lib/pyth-sdk-solidity/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "paris",
  "viaIR": false
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"bytes32","name":"tradeHash","type":"bytes32"},{"components":[{"internalType":"address","name":"user","type":"address"},{"internalType":"uint32","name":"userOpenTradeIndex","type":"uint32"},{"internalType":"uint64","name":"entryPrice","type":"uint64"},{"internalType":"address","name":"pairBase","type":"address"},{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"uint96","name":"margin","type":"uint96"},{"internalType":"uint64","name":"stopLoss","type":"uint64"},{"internalType":"uint64","name":"takeProfit","type":"uint64"},{"internalType":"uint24","name":"broker","type":"uint24"},{"internalType":"bool","name":"isLong","type":"bool"},{"internalType":"uint96","name":"openFee","type":"uint96"},{"internalType":"int256","name":"longAccFundingFeePerShare","type":"int256"},{"internalType":"uint96","name":"executionFee","type":"uint96"},{"internalType":"uint40","name":"timestamp","type":"uint40"},{"internalType":"uint80","name":"qty","type":"uint80"},{"internalType":"uint40","name":"holdingFeeRate","type":"uint40"},{"internalType":"uint256","name":"openBlock","type":"uint256"}],"indexed":false,"internalType":"struct ITrading.OpenTrade","name":"ot","type":"tuple"}],"name":"OpenMarketTrade","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"bytes32","name":"tradeHash","type":"bytes32"},{"indexed":false,"internalType":"enum ITradingChecker.Refund","name":"refund","type":"uint8"}],"name":"PendingTradeRefund","type":"event"},{"inputs":[{"components":[{"internalType":"bytes32","name":"orderHash","type":"bytes32"},{"internalType":"address","name":"user","type":"address"},{"internalType":"uint64","name":"entryPrice","type":"uint64"},{"internalType":"address","name":"pairBase","type":"address"},{"internalType":"address","name":"tokenIn","type":"address"},{"internalType":"uint96","name":"margin","type":"uint96"},{"internalType":"uint64","name":"stopLoss","type":"uint64"},{"internalType":"uint64","name":"takeProfit","type":"uint64"},{"internalType":"uint24","name":"broker","type":"uint24"},{"internalType":"bool","name":"isLong","type":"bool"},{"internalType":"uint96","name":"openFee","type":"uint96"},{"internalType":"uint96","name":"executionFee","type":"uint96"},{"internalType":"uint80","name":"qty","type":"uint80"}],"internalType":"struct LimitOrderDeal","name":"order","type":"tuple"},{"internalType":"uint256","name":"marketPrice","type":"uint256"}],"name":"limitOrderDeal","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"tradeHash","type":"bytes32"},{"internalType":"uint256","name":"upperPrice","type":"uint256"},{"internalType":"uint256","name":"lowerPrice","type":"uint256"}],"name":"marketTradeCallback","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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