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// SPDX-License-Identifier: BUSL-1.1

// This code is made available under the terms and conditions of the Business Source License 1.1 (BUSL-1.1).

// The act of publishing this code is driven by the aim to promote transparency and facilitate its utilization for educational purposes.

pragma solidity 0.8.18;

import { OwnableUpgradeable } from "@openzeppelin-upgradeable/contracts/access/OwnableUpgradeable.sol";

import {OwnableUpgradeable} from "@openzeppelin-upgradeable/contracts/access/OwnableUpgradeable.sol";

import { ITradeServiceHook } from "../services/interfaces/ITradeServiceHook.sol";

import {ITradeServiceHook} from "../services/interfaces/ITradeServiceHook.sol";

import { ITradeService } from "../services/interfaces/ITradeService.sol";

import {ITradeService} from "../services/interfaces/ITradeService.sol";

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

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

import { TraderLoyaltyCredit } from "@hmx/tokens/TraderLoyaltyCredit.sol";

import {TraderLoyaltyCredit} from "@hmx/tokens/TraderLoyaltyCredit.sol";

import { TLCStaking } from "@hmx/staking/TLCStaking.sol";

import {TLCStaking} from "@hmx/staking/TLCStaking.sol";

import { FullMath } from "@hmx/libraries/FullMath.sol";

import {FullMath} from "@hmx/libraries/FullMath.sol";

contract TLCHook is ITradeServiceHook, OwnableUpgradeable {

using FullMath for uint256;

error TLCHook_Forbidden();

error TLCHook_BadArgs();

uint32 internal constant BPS = 100_00;

address public tradeService;

address public tlc;

address public tlcStaking;

// mapping weight with the marketIndex

mapping(uint256 marketIndex => uint256 weight) public marketWeights;

mapping(address whitelisted => bool isWhitelisted) public whitelistedCallers;

modifier onlyWhitelistedCaller() {

if (!whitelistedCallers[msg.sender]) revert TLCHook_Forbidden();

}

event LogSetMarketWeight(uint256 marketIndex, uint256 oldWeight, uint256 newWeight);

event LogSetWhitelistedCaller(address indexed caller, bool isWhitelisted);

function initialize(address _tradeService, address _tlc, address _tlcStaking) external initializer {

OwnableUpgradeable.__Ownable_init();

tradeService = _tradeService;

tlc = _tlc;

tlcStaking = _tlcStaking;

// Sanity checks

ITradeService(tradeService).configStorage();

TraderLoyaltyCredit(tlc).symbol();

}

function onIncreasePosition(

address _primaryAccount,

uint256,

uint256 _marketIndex,

uint256 _sizeDelta,

bytes32

) external onlyWhitelistedCaller {

_mintTLC(_primaryAccount, _sizeDelta, _marketIndex);

}

function onDecreasePosition(

address _primaryAccount,

uint256,

uint256 _sizeDelta,

bytes32

) external onlyWhitelistedCaller {

// Do nothing

}

function _mintTLC(address _primaryAccount, uint256 _sizeDelta, uint256 _marketIndex) internal {

// SLOADs

TraderLoyaltyCredit _tlc = TraderLoyaltyCredit(tlc);

TLCStaking _tlcStaking = TLCStaking(tlcStaking);

// Calculate mint amount which is equal to sizeDelta but convert decimal from 1e30 to 1e18

// This is to make the TLC token composable as ERC20 with regular 18 decimals, also wighted

uint256 weight = marketWeights[_marketIndex] == 0 ? BPS : marketWeights[_marketIndex];

uint256 _mintAmount = _sizeDelta.mulDiv(weight, 1e16); // 1e16 = (1e30 / 1e18) * BPS, optimized math

_tlc.mint(address(this), _mintAmount);

_tlc.approve(address(_tlcStaking), _mintAmount);

_tlcStaking.deposit(_primaryAccount, _mintAmount);

}

function setMarketWeight(uint256 _marketIndex, uint256 _weight) external onlyOwner {

emit LogSetMarketWeight(_marketIndex, marketWeights[_marketIndex], _weight);

marketWeights[_marketIndex] = _weight;

}

function setWhitelistedCallers(address[] calldata _callers, bool[] calldata _isWhitelisteds) external onlyOwner {

if (_callers.length != _isWhitelisteds.length) revert TLCHook_BadArgs();

for (uint256 i = 0; i < _callers.length; ) {

whitelistedCallers[_callers[i]] = _isWhitelisteds[i];

emit LogSetWhitelistedCaller(_callers[i], _isWhitelisteds[i]);

unchecked {

++i;

}

/// @custom:oz-upgrades-unsafe-allow constructor

constructor() {

_disableInitializers();

}

Saved diffs

Original text

Open file

// SPDX-License-Identifier: BUSL-1.1
// This code is made available under the terms and conditions of the Business Source License 1.1 (BUSL-1.1).
// The act of publishing this code is driven by the aim to promote transparency and facilitate its utilization for educational purposes.

pragma solidity 0.8.18;

import { OwnableUpgradeable } from "@openzeppelin-upgradeable/contracts/access/OwnableUpgradeable.sol";
import { ITradeServiceHook } from "../services/interfaces/ITradeServiceHook.sol";
import { ITradeService } from "../services/interfaces/ITradeService.sol";
import { ITradingStaking } from "./interfaces/ITradingStaking.sol";
import { TraderLoyaltyCredit } from "@hmx/tokens/TraderLoyaltyCredit.sol";
import { TLCStaking } from "@hmx/staking/TLCStaking.sol";
import { FullMath } from "@hmx/libraries/FullMath.sol";

contract TLCHook is ITradeServiceHook, OwnableUpgradeable {
  using FullMath for uint256;

error TLCHook_Forbidden();
  error TLCHook_BadArgs();

uint32 internal constant BPS = 100_00;

address public tradeService;
  address public tlc;
  address public tlcStaking;

// mapping weight with the marketIndex
  mapping(uint256 marketIndex => uint256 weight) public marketWeights;
  mapping(address whitelisted => bool isWhitelisted) public whitelistedCallers;

modifier onlyWhitelistedCaller() {
    if (!whitelistedCallers[msg.sender]) revert TLCHook_Forbidden();
    _;
  }

event LogSetMarketWeight(uint256 marketIndex, uint256 oldWeight, uint256 newWeight);
  event LogSetWhitelistedCaller(address indexed caller, bool isWhitelisted);

function initialize(address _tradeService, address _tlc, address _tlcStaking) external initializer {
    OwnableUpgradeable.__Ownable_init();

tradeService = _tradeService;
    tlc = _tlc;
    tlcStaking = _tlcStaking;

// Sanity checks
    ITradeService(tradeService).configStorage();
    TraderLoyaltyCredit(tlc).symbol();
  }

function onIncreasePosition(
    address _primaryAccount,
    uint256,
    uint256 _marketIndex,
    uint256 _sizeDelta,
    bytes32
  ) external onlyWhitelistedCaller {
    _mintTLC(_primaryAccount, _sizeDelta, _marketIndex);
  }

function onDecreasePosition(
    address _primaryAccount,
    uint256,
    uint256,
    uint256 _sizeDelta,
    bytes32
  ) external onlyWhitelistedCaller {
    // Do nothing
  }

function _mintTLC(address _primaryAccount, uint256 _sizeDelta, uint256 _marketIndex) internal {
    // SLOADs
    TraderLoyaltyCredit _tlc = TraderLoyaltyCredit(tlc);
    TLCStaking _tlcStaking = TLCStaking(tlcStaking);
    // Calculate mint amount which is equal to sizeDelta but convert decimal from 1e30 to 1e18
    // This is to make the TLC token composable as ERC20 with regular 18 decimals, also wighted
    uint256 weight = marketWeights[_marketIndex] == 0 ? BPS : marketWeights[_marketIndex];
    uint256 _mintAmount = _sizeDelta.mulDiv(weight, 1e16); // 1e16 = (1e30 / 1e18) * BPS, optimized math

_tlc.mint(address(this), _mintAmount);
    _tlc.approve(address(_tlcStaking), _mintAmount);
    _tlcStaking.deposit(_primaryAccount, _mintAmount);
  }

function setMarketWeight(uint256 _marketIndex, uint256 _weight) external onlyOwner {
    emit LogSetMarketWeight(_marketIndex, marketWeights[_marketIndex], _weight);
    marketWeights[_marketIndex] = _weight;
  }

function setWhitelistedCallers(address[] calldata _callers, bool[] calldata _isWhitelisteds) external onlyOwner {
    if (_callers.length != _isWhitelisteds.length) revert TLCHook_BadArgs();
    for (uint256 i = 0; i < _callers.length; ) {
      whitelistedCallers[_callers[i]] = _isWhitelisteds[i];

emit LogSetWhitelistedCaller(_callers[i], _isWhitelisteds[i]);

unchecked {
        ++i;
      }
    }
  }

/// @custom:oz-upgrades-unsafe-allow constructor
  constructor() {
    _disableInitializers();
  }
}

Changed text

Open file

pragma solidity 0.8.18;

import {OwnableUpgradeable} from "@openzeppelin-upgradeable/contracts/access/OwnableUpgradeable.sol";
import {ITradeServiceHook} from "../services/interfaces/ITradeServiceHook.sol";
import {ITradeService} from "../services/interfaces/ITradeService.sol";
import {ITradingStaking} from "./interfaces/ITradingStaking.sol";
import {TraderLoyaltyCredit} from "@hmx/tokens/TraderLoyaltyCredit.sol";
import {TLCStaking} from "@hmx/staking/TLCStaking.sol";
import {FullMath} from "@hmx/libraries/FullMath.sol";

contract TLCHook is ITradeServiceHook, OwnableUpgradeable {
    using FullMath for uint256;

error TLCHook_Forbidden();
    error TLCHook_BadArgs();

uint32 internal constant BPS = 100_00;

address public tradeService;
    address public tlc;
    address public tlcStaking;

// mapping weight with the marketIndex
    mapping(uint256 marketIndex => uint256 weight) public marketWeights;
    mapping(address whitelisted => bool isWhitelisted) public whitelistedCallers;

modifier onlyWhitelistedCaller() {
        if (!whitelistedCallers[msg.sender]) revert TLCHook_Forbidden();
        _;
    }

event LogSetMarketWeight(uint256 marketIndex, uint256 oldWeight, uint256 newWeight);
    event LogSetWhitelistedCaller(address indexed caller, bool isWhitelisted);

function initialize(address _tradeService, address _tlc, address _tlcStaking) external initializer {
        OwnableUpgradeable.__Ownable_init();

tradeService = _tradeService;
        tlc = _tlc;
        tlcStaking = _tlcStaking;

// Sanity checks
        ITradeService(tradeService).configStorage();
        TraderLoyaltyCredit(tlc).symbol();
    }

function onIncreasePosition(
        address _primaryAccount,
        uint256,
        uint256 _marketIndex,
        uint256 _sizeDelta,
        bytes32
    ) external onlyWhitelistedCaller {
        _mintTLC(_primaryAccount, _sizeDelta, _marketIndex);
    }

function onDecreasePosition(
        address _primaryAccount,
        uint256,
        uint256,
        uint256 _sizeDelta,
        bytes32
    ) external onlyWhitelistedCaller {
        // Do nothing
    }

function _mintTLC(address _primaryAccount, uint256 _sizeDelta, uint256 _marketIndex) internal {
        // SLOADs
        TraderLoyaltyCredit _tlc = TraderLoyaltyCredit(tlc);
        TLCStaking _tlcStaking = TLCStaking(tlcStaking);
        // Calculate mint amount which is equal to sizeDelta but convert decimal from 1e30 to 1e18
        // This is to make the TLC token composable as ERC20 with regular 18 decimals, also wighted
        uint256 weight = marketWeights[_marketIndex] == 0 ? BPS : marketWeights[_marketIndex];
        uint256 _mintAmount = _sizeDelta.mulDiv(weight, 1e16); // 1e16 = (1e30 / 1e18) * BPS, optimized math

_tlc.mint(address(this), _mintAmount);
        _tlc.approve(address(_tlcStaking), _mintAmount);
        _tlcStaking.deposit(_primaryAccount, _mintAmount);
    }

function setMarketWeight(uint256 _marketIndex, uint256 _weight) external onlyOwner {
        emit LogSetMarketWeight(_marketIndex, marketWeights[_marketIndex], _weight);
        marketWeights[_marketIndex] = _weight;
    }

function setWhitelistedCallers(address[] calldata _callers, bool[] calldata _isWhitelisteds) external onlyOwner {
        if (_callers.length != _isWhitelisteds.length) revert TLCHook_BadArgs();
        for (uint256 i = 0; i < _callers.length; ) {
            whitelistedCallers[_callers[i]] = _isWhitelisteds[i];

emit LogSetWhitelistedCaller(_callers[i], _isWhitelisteds[i]);

unchecked {
                ++i;
            }
        }
    }

/// @custom:oz-upgrades-unsafe-allow constructor
    constructor() {
        _disableInitializers();
    }
}