BitcoinStrategyUpgradeable

{{
  "language": "Solidity",
  "sources": {
    "src/BitcoinStrategyUpgradeable.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity ^0.8.26;

import {ERC20Upgradeable} from "@openzeppelin/contracts-upgradeable/token/ERC20/ERC20Upgradeable.sol";
import {ReentrancyGuardUpgradeable} from "@openzeppelin/contracts-upgradeable/utils/ReentrancyGuardUpgradeable.sol";
import {OwnableUpgradeable} from "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
import {UUPSUpgradeable} from "@openzeppelin/contracts-upgradeable/proxy/utils/UUPSUpgradeable.sol";
import {Initializable} from "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";

import {SafeTransferLib} from "solady/utils/SafeTransferLib.sol";
import {IHooks} from "@uniswap/v4-core/src/interfaces/IHooks.sol";
import {Currency} from "@uniswap/v4-core/src/types/Currency.sol";
import {PoolKey} from "@uniswap/v4-core/src/types/PoolKey.sol";
import {PoolId, PoolIdLibrary} from "@uniswap/v4-core/src/types/PoolId.sol";
import {IV4Router} from "@uniswap/v4-periphery/src/interfaces/IV4Router.sol";
import {IPositionManager} from "@uniswap/v4-periphery/src/interfaces/IPositionManager.sol";
import {IPoolManager} from "@uniswap/v4-core/src/interfaces/IPoolManager.sol";
import {StateLibrary} from "@uniswap/v4-core/src/libraries/StateLibrary.sol";
import {Slot0} from "@uniswap/v4-core/src/types/Slot0.sol";
import {Actions} from "@uniswap/v4-periphery/src/libraries/Actions.sol";
import {IAllowanceTransfer} from "permit2/src/interfaces/IAllowanceTransfer.sol";
import {IERC20} from "forge-std/interfaces/IERC20.sol";

import {IUniversalRouter} from "./interfaces/IUniversalRouter.sol";
import {Commands} from "./libraries/Commands.sol";

/// @custom:security-contact security@example.com
/// @custom:oz-upgrades-from BitcoinStrategy
contract BitcoinStrategyUpgradeable is
    Initializable,
    ERC20Upgradeable,
    ReentrancyGuardUpgradeable,
    OwnableUpgradeable,
    UUPSUpgradeable
{
    using PoolIdLibrary for PoolKey;
    using StateLibrary for IPoolManager;
    using SafeTransferLib for address;

    /* ═══════════════════════════════════════════════════════ */
    /*                   CONFIGURATION STRUCTS                  */
    /* ═══════════════════════════════════════════════════════ */

    struct FeeConfig {
        uint256 creatorFeePercent;  // Percentage of ETH fees to creator
        uint256 treasuryPercent;    // Percentage of ETH fees to treasury
        uint256 profitTargetPercent; // Profit target for token sales
    }

    struct PoolConfig {
        uint24 lpFee;              // Liquidity pool fee
        int24 tickSpacing;         // Tick spacing for pool
        uint256 token0Amount;      // Initial ETH amount
        uint256 token1Amount;      // Initial token amount
        uint160 startingPrice;     // Starting price for pool
        int24 tickLower;           // Lower tick boundary
        int24 tickUpper;           // Upper tick boundary
        uint128 liquidity;         // Initial liquidity amount
    }

    struct SwapPoolConfig {
        uint24 fee;                // Pool fee for swaps
        int24 tickSpacing;         // Tick spacing for swaps
    }

    /* ═══════════════════════════════════════════════════════ */
    /*                   IMMUTABLE-LIKE VARIABLES               */
    /* ═══════════════════════════════════════════════════════ */
    // Note: These cannot be truly immutable in upgradeable contracts
    // They are set once in initialize() and never changed

    IV4Router private _router;
    IPositionManager private _POSM;
    IAllowanceTransfer private _PERMIT2;
    IUniversalRouter private _UNIVERSAL_ROUTER;

    address public creator;
    address public creatorFeeWallet;
    address public treasury;
    IERC20 public TRADING_TOKEN;

    uint256 public MAX_SUPPLY;
    uint256 public CREATOR_FEE_PERCENT;
    uint256 public TREASURY_PERCENT;
    uint256 public PROFIT_TARGET_PERCENT;

    // Pool configuration storage
    PoolConfig private poolConfig;

    /* ═══════════════════════════════════════════════════════ */
    /*                   STATE VARIABLES                       */
    /* ═══════════════════════════════════════════════════════ */

    // Constants
    uint256 public constant MAX_ACTIVE_BATCHES = 100;

    // Pause state
    bool public paused;

    // Configurable slippage tolerance (can be updated by owner)
    uint256 public slippageTolerancePercent;
    uint256 public buybackSlippagePercent;

    // Uniswap V4 Pool variables
    bool public poolInitialized;
    PoolKey public poolKey;
    PoolId public poolId;
    int24 public tickLower;
    int24 public tickUpper;
    uint256 public positionTokenId;

    // Liquidity tracking - separate fees from principal
    uint128 public principalLiquidity; // Original liquidity amount
    uint256 public lastFeeCollection; // Timestamp of last fee collection

    // Token trading batches
    struct TokenBatch {
        uint256 amount;           // Amount of tokens bought
        uint256 purchasePrice;    // Price per token in ETH (scaled by 1e18)
        uint256 targetPrice;      // Price to sell at (+20%)
        bool sold;                // Whether this batch has been sold
    }

    uint256 public batchCounter;
    mapping(uint256 => TokenBatch) public tokenBatches;
    uint256[] public activeBatchIds;

    // Blacklist mapping
    mapping(address => bool) public isBlacklisted;

    // Pull payment pattern for fee distribution
    mapping(address => uint256) public pendingWithdrawals;

    // Approval cache for efficiency
    mapping(address => bool) private _permit2Approved;

    // Swap pool configurations for different pairs
    SwapPoolConfig public tradingTokenSwapConfig;  // For ETH <-> TRADING_TOKEN
    SwapPoolConfig public strategySwapConfig;      // For ETH <-> STRATEGY

    /* ═══════════════════════════════════════════════════════ */
    /*                    CUSTOM EVENTS                        */
    /* ═══════════════════════════════════════════════════════ */

    event FeesCollected(uint256 ethFees, uint256 strategyFees, uint256 timestamp);
    event StrategyBurned(uint256 amount);
    event CreatorFeePaid(uint256 amount);
    event TokenBatchPurchased(uint256 indexed batchId, uint256 amount, uint256 pricePerToken);
    event TokenBatchSold(uint256 indexed batchId, uint256 amount, uint256 pricePerToken, uint256 profit);
    event StrategyBuyback(uint256 ethSpent, uint256 strategyBought);
    event AddressBlacklisted(address indexed account);
    event AddressUnblacklisted(address indexed account);
    event PoolInitialized(uint256 positionTokenId, uint128 liquidity);
    event BuybackFailed(string reason);
    event FeeWithdrawn(address indexed recipient, uint256 amount);
    event Paused(address indexed account);
    event Unpaused(address indexed account);
    event ContractUpgraded(address indexed implementation);
    event TWAPWindowUpdated(uint32 oldWindow, uint32 newWindow);

    /* ═══════════════════════════════════════════════════════ */
    /*                    CUSTOM ERRORS                        */
    /* ═══════════════════════════════════════════════════════ */

    error InsufficientContractBalance();
    error NotValidSwap();
    error AddressIsBlacklisted();
    error NotOwner();
    error NotTreasury();
    error InvalidAddress();
    error NoFeesToCollect();
    error BatchAlreadySold();
    error PriceTargetNotMet();
    error InvalidFeeConfiguration();
    error InvalidPoolConfiguration();
    error TooManyActiveBatches();
    error BatchDoesNotExist();
    error InvalidBatchAmount();
    error AlreadyBlacklisted();
    error NotBlacklisted();
    error PoolDoesNotExist();
    error ZeroTokensReceived();
    error InvalidContract();
    error OnlySelf();
    error ContractPaused();
    error NoFeesToWithdraw();

    /* ═══════════════════════════════════════════════════════ */
    /*                      MODIFIERS                          */
    /* ═══════════════════════════════════════════════════════ */

    /// @notice Modifier to restrict access to treasury address only
    modifier onlyTreasury() {
        if (msg.sender != treasury) {
            revert NotTreasury();
        }
        _;
    }

    /// @notice Modifier to check if contract is not paused
    modifier whenNotPaused() {
        if (paused) revert ContractPaused();
        _;
    }

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

    /// @notice Initializes the upgradeable contract (replaces constructor)
    function initialize(
        IV4Router _routerAddr,
        IPositionManager _posm,
        IAllowanceTransfer _permit2,
        IUniversalRouter _universalRouter,
        address _tradingToken,
        address _creatorFeeWallet,
        address _treasury,
        uint256 _maxSupply,
        FeeConfig memory _feeConfig,
        PoolConfig memory _poolConfig,
        string memory _tokenName,
        string memory _tokenSymbol
    ) public initializer {
        // Initialize parent contracts
        __ERC20_init(_tokenName, _tokenSymbol);
        __ReentrancyGuard_init();
        __Ownable_init(msg.sender);
        __UUPSUpgradeable_init();

        // Validate addresses are not zero
        if (_tradingToken == address(0) || _creatorFeeWallet == address(0) || _treasury == address(0)) {
            revert InvalidAddress();
        }
        if (address(_routerAddr) == address(0) || address(_posm) == address(0) || address(_permit2) == address(0) || address(_universalRouter) == address(0)) {
            revert InvalidAddress();
        }

        // Validate addresses are contracts
        if (address(_routerAddr).code.length == 0) revert InvalidContract();
        if (address(_posm).code.length == 0) revert InvalidContract();
        if (address(_permit2).code.length == 0) revert InvalidContract();
        if (address(_universalRouter).code.length == 0) revert InvalidContract();
        if (_tradingToken.code.length == 0) revert InvalidContract();

        // Validate fee configuration
        if (_feeConfig.creatorFeePercent + _feeConfig.treasuryPercent != 100) {
            revert InvalidFeeConfiguration();
        }
        if (_feeConfig.profitTargetPercent == 0 || _feeConfig.profitTargetPercent > 1000) {
            revert InvalidFeeConfiguration();
        }

        // Validate pool configuration
        if (_poolConfig.liquidity == 0 || _maxSupply == 0) {
            revert InvalidPoolConfiguration();
        }

        creator = msg.sender;
        _router = _routerAddr;
        _POSM = _posm;
        _PERMIT2 = _permit2;
        _UNIVERSAL_ROUTER = _universalRouter;
        TRADING_TOKEN = IERC20(_tradingToken);
        creatorFeeWallet = _creatorFeeWallet;
        treasury = _treasury;
        MAX_SUPPLY = _maxSupply;
        CREATOR_FEE_PERCENT = _feeConfig.creatorFeePercent;
        TREASURY_PERCENT = _feeConfig.treasuryPercent;
        PROFIT_TARGET_PERCENT = _feeConfig.profitTargetPercent;
        poolConfig = _poolConfig;

        // Set default slippage values
        slippageTolerancePercent = 15; // 15% default (conservative for low liquidity)
        buybackSlippagePercent = 20; // 20% for buyback (optional operation)

        // Initialize TWAP parameters
        twapWindow = 1800; // 30 minutes default

        // Set default swap configs (can be updated via setSwapConfig)
        tradingTokenSwapConfig = SwapPoolConfig({
            fee: 3000,      // 0.3% default
            tickSpacing: 60
        });
        strategySwapConfig = SwapPoolConfig({
            fee: 3000,      // 0.3% default
            tickSpacing: 60
        });

        // Mint tokens to this contract for liquidity
        _mint(address(this), MAX_SUPPLY);
    }

    /// @notice Required by UUPS pattern - restricts who can upgrade
    function _authorizeUpgrade(address newImplementation) internal override onlyOwner {
        emit ContractUpgraded(newImplementation);
    }

    /// @notice Returns the implementation version
    function version() public pure virtual returns (string memory) {
        return "1.0.0";
    }

    /* ═══════════════════════════════════════════════════════ */
    /*                    ADMIN FUNCTIONS                       */
    /* ═══════════════════════════════════════════════════════ */

    /// @notice Pause the contract in case of emergency
    function pause() external onlyOwner {
        paused = true;
        emit Paused(msg.sender);
    }

    /// @notice Unpause the contract
    function unpause() external onlyOwner {
        paused = false;
        emit Unpaused(msg.sender);
    }

    /// @notice Set slippage tolerance for sell operations
    /// @param _slippagePercent Slippage tolerance percentage (e.g., 5 = 5%)
    function setSlippageTolerance(uint256 _slippagePercent) external onlyOwner {
        require(_slippagePercent > 0 && _slippagePercent <= 50, "Invalid slippage");
        slippageTolerancePercent = _slippagePercent;
    }

    /// @notice Set slippage tolerance for buyback operations
    /// @param _slippagePercent Slippage tolerance percentage (e.g., 20 = 20%)
    function setBuybackSlippage(uint256 _slippagePercent) external onlyOwner {
        require(_slippagePercent > 0 && _slippagePercent <= 50, "Invalid slippage");
        buybackSlippagePercent = _slippagePercent;
    }

    /// @notice Set swap pool configuration for trading token pair
    /// @param _fee Pool fee (e.g., 3000 = 0.3%)
    /// @param _tickSpacing Tick spacing for the pool
    function setTradingTokenSwapConfig(uint24 _fee, int24 _tickSpacing) external onlyOwner {
        tradingTokenSwapConfig = SwapPoolConfig({
            fee: _fee,
            tickSpacing: _tickSpacing
        });
    }

    /// @notice Set swap pool configuration for strategy token pair
    /// @param _fee Pool fee (e.g., 3000 = 0.3%)
    /// @param _tickSpacing Tick spacing for the pool
    function setStrategySwapConfig(uint24 _fee, int24 _tickSpacing) external onlyOwner {
        strategySwapConfig = SwapPoolConfig({
            fee: _fee,
            tickSpacing: _tickSpacing
        });
    }

    /// @notice Blacklists an address, preventing them from transferring tokens
    function blacklistAddress(address account) external onlyOwner {
        if (isBlacklisted[account]) revert AlreadyBlacklisted();
        isBlacklisted[account] = true;
        emit AddressBlacklisted(account);
    }

    /// @notice Removes an address from the blacklist
    function unblacklistAddress(address account) external onlyOwner {
        if (!isBlacklisted[account]) revert NotBlacklisted();
        isBlacklisted[account] = false;
        emit AddressUnblacklisted(account);
    }

    /// @notice Renounces ownership of the contract
    function renounceOwnership() public override onlyOwner {
        _transferOwnership(address(0));
    }

    /* ═══════════════════════════════════════════════════════ */
    /*                    LIQUIDITY FUNCTIONS                   */
    /* ═══════════════════════════════════════════════════════ */

    /// @notice Load initial liquidity into the pool
    function loadLiquidity() external onlyOwner {
        Currency currency0 = Currency.wrap(address(0)); // ETH
        Currency currency1 = Currency.wrap(address(this)); // STRATEGY

        tickLower = poolConfig.tickLower;
        tickUpper = poolConfig.tickUpper;

        PoolKey memory key = PoolKey(
            currency0,
            currency1,
            poolConfig.lpFee,
            poolConfig.tickSpacing,
            IHooks(address(0))
        );

        poolKey = key;
        poolId = key.toId();
        bytes memory hookData = new bytes(0);

        principalLiquidity = poolConfig.liquidity; // Store principal

        (
            bytes memory actions,
            bytes[] memory mintParams
        ) = _mintLiquidityParams(
                key,
                tickLower,
                tickUpper,
                poolConfig.liquidity,
                poolConfig.token0Amount,
                poolConfig.token1Amount,
                address(this),
                hookData
            );

        bytes[] memory params = new bytes[](2);

        params[0] = abi.encodeWithSelector(
            _POSM.initializePool.selector,
            key,
            poolConfig.startingPrice,
            hookData
        );

        params[1] = abi.encodeWithSelector(
            _POSM.modifyLiquidities.selector,
            abi.encode(actions, mintParams),
            block.timestamp + 60
        );

        uint256 valueToPass = poolConfig.token0Amount;

        // Approve for position manager (one-time operation, unlimited is acceptable here)
        _approve(address(this), address(_PERMIT2), type(uint256).max);

        _PERMIT2.approve(
            address(this),
            address(_POSM),
            type(uint160).max,
            type(uint48).max
        );

        positionTokenId = _POSM.nextTokenId();

        _POSM.multicall{value: valueToPass}(params);

        poolInitialized = true;
        lastFeeCollection = block.timestamp;

        // Initialize first price observation for TWAP
        _updatePriceObservation();

        // Emit event
        emit PoolInitialized(positionTokenId, principalLiquidity);
    }

    /// @notice Creates parameters for minting liquidity
    function _mintLiquidityParams(
        PoolKey memory key,
        int24 _tickLower,
        int24 _tickUpper,
        uint256 liquidity,
        uint256 amount0Max,
        uint256 amount1Max,
        address recipient,
        bytes memory hookData
    ) internal pure returns (bytes memory, bytes[] memory) {
        bytes memory actions = abi.encodePacked(
            uint8(Actions.MINT_POSITION),
            uint8(Actions.SETTLE_PAIR)
        );

        bytes[] memory params = new bytes[](2);
        params[0] = abi.encode(
            key,
            _tickLower,
            _tickUpper,
            liquidity,
            amount0Max,
            amount1Max,
            recipient,
            hookData
        );
        params[1] = abi.encode(key.currency0, key.currency1);
        return (actions, params);
    }

    /* ═══════════════════════════════════════════════════════ */
    /*                    FEE COLLECTION FUNCTIONS              */
    /* ═══════════════════════════════════════════════════════ */

    /// @notice Get accumulated fees in the pool
    function getAccumulatedFees(
        PoolKey memory _poolKey
    ) public view returns (uint256 fees0, uint256 fees1) {
        IPoolManager poolManager = _POSM.poolManager();
        PoolId _poolId = _poolKey.toId();

        (
            uint128 liquidity,
            uint256 feeGrowthInside0LastX128,
            uint256 feeGrowthInside1LastX128
        ) = poolManager.getPositionInfo(
                _poolId,
                address(_POSM),
                tickLower,
                tickUpper,
                bytes32(positionTokenId)
            );

        (
            uint256 feeGrowthInside0X128,
            uint256 feeGrowthInside1X128
        ) = poolManager.getFeeGrowthInside(_poolId, tickLower, tickUpper);

        // Handle potential overflow in fee growth
        unchecked {
            uint256 delta0 = feeGrowthInside0X128 - feeGrowthInside0LastX128;
            uint256 delta1 = feeGrowthInside1X128 - feeGrowthInside1LastX128;

            fees0 = (delta0 * liquidity) / (1 << 128);
            fees1 = (delta1 * liquidity) / (1 << 128);
        }

        return (fees0, fees1);
    }

    /// @notice Collects fees from the position and processes them
    /// @dev Uses pull payment pattern for safer fee distribution
    function collectAndProcessFees() external nonReentrant returns (uint256 ethFees, uint256 strategyFees) {
        if (!poolInitialized) revert NoFeesToCollect();

        // Get accumulated fees
        (uint256 fees0, uint256 fees1) = getAccumulatedFees(poolKey);

        if (fees0 == 0 && fees1 == 0) revert NoFeesToCollect();

        // Prepare to decrease liquidity by ZERO to collect fees without removing principal
        bytes memory actions = abi.encodePacked(
            uint8(Actions.DECREASE_LIQUIDITY),
            uint8(Actions.TAKE_PAIR)
        );

        bytes[] memory params = new bytes[](2);
        // Decrease by 0 liquidity to only collect fees
        params[0] = abi.encode(positionTokenId, 0, 0, 0, "");
        // TAKE_PAIR requires: currency0, currency1, recipient
        params[1] = abi.encode(poolKey.currency0, poolKey.currency1, address(this));

        _POSM.modifyLiquidities(abi.encode(actions, params), block.timestamp + 60);

        ethFees = fees0;
        strategyFees = fees1;

        // Burn the $STRATEGY portion using proper burn
        if (strategyFees > 0) {
            _burn(address(this), strategyFees);
            emit StrategyBurned(strategyFees);
        }

        // Update state BEFORE external calls (Checks-Effects-Interactions pattern)
        lastFeeCollection = block.timestamp;

        // Update price observation for TWAP
        _updatePriceObservation();

        emit FeesCollected(ethFees, strategyFees, block.timestamp);

        // Split ETH fees using pull payment pattern
        if (ethFees > 0) {
            uint256 creatorFee = (ethFees * CREATOR_FEE_PERCENT) / 100;
            uint256 treasuryAmount = ethFees - creatorFee;

            if (creatorFee > 0) {
                pendingWithdrawals[creatorFeeWallet] += creatorFee;
                emit CreatorFeePaid(creatorFee);
            }

            if (treasuryAmount > 0) {
                pendingWithdrawals[treasury] += treasuryAmount;
            }
        }

        return (ethFees, strategyFees);
    }

    /// @notice Withdraw pending fees
    function withdrawFees() external nonReentrant {
        uint256 amount = pendingWithdrawals[msg.sender];
        if (amount == 0) revert NoFeesToWithdraw();

        pendingWithdrawals[msg.sender] = 0;
        msg.sender.forceSafeTransferETH(amount);

        emit FeeWithdrawn(msg.sender, amount);
    }

    /* ═══════════════════════════════════════════════════════ */
    /*                    TRADING FUNCTIONS                     */
    /* ═══════════════════════════════════════════════════════ */

    /// @notice Buy trading token with treasury ETH
    /// @param ethAmount Amount of ETH to spend on tokens
    /// @param minTokenOut Minimum tokens expected
    function buyToken(uint256 ethAmount, uint256 minTokenOut) external onlyTreasury nonReentrant whenNotPaused returns (uint256 batchId) {
        // Check batch limit
        if (activeBatchIds.length >= MAX_ACTIVE_BATCHES) revert TooManyActiveBatches();

        if (ethAmount == 0) revert InsufficientContractBalance();
        if (address(this).balance < ethAmount) revert InsufficientContractBalance();

        uint256 tokenBalanceBefore = TRADING_TOKEN.balanceOf(address(this));

        // Execute swap via Universal Router
        _swapExactInputSingle(
            address(0), // ETH
            address(TRADING_TOKEN),
            ethAmount,
            minTokenOut,
            tradingTokenSwapConfig.fee,
            tradingTokenSwapConfig.tickSpacing
        );

        uint256 tokenBalanceAfter = TRADING_TOKEN.balanceOf(address(this));
        uint256 tokenReceived = tokenBalanceAfter - tokenBalanceBefore;

        // Validate token receipt
        if (tokenReceived == 0) revert ZeroTokensReceived();
        if (tokenReceived < minTokenOut) revert NotValidSwap();

        // Calculate price per token (scaled by 1e18)
        uint256 pricePerToken = (ethAmount * 1e18) / tokenReceived;
        uint256 targetPrice = (pricePerToken * (100 + PROFIT_TARGET_PERCENT)) / 100;

        // Store batch
        batchId = batchCounter++;
        tokenBatches[batchId] = TokenBatch({
            amount: tokenReceived,
            purchasePrice: pricePerToken,
            targetPrice: targetPrice,
            sold: false
        });

        activeBatchIds.push(batchId);

        // Update price observation for TWAP after swap
        _updatePriceObservation();

        emit TokenBatchPurchased(batchId, tokenReceived, pricePerToken);

        return batchId;
    }

    /// @notice Sell token batch when profit target is hit
    /// @param batchId The batch to sell
    /// @param currentPricePerToken Current token price (for validation)
    function sellToken(uint256 batchId, uint256 currentPricePerToken) external onlyTreasury nonReentrant whenNotPaused {
        // Validate batch exists
        if (batchId >= batchCounter) revert BatchDoesNotExist();

        TokenBatch storage batch = tokenBatches[batchId];

        if (batch.amount == 0) revert InvalidBatchAmount();
        if (batch.sold) revert BatchAlreadySold();
        if (currentPricePerToken < batch.targetPrice) revert PriceTargetNotMet();

        uint256 tokenAmount = batch.amount;
        // Calculate minEthOut with configurable slippage tolerance
        // Use purchasePrice as baseline for slippage protection (conservative approach)
        uint256 expectedEthOut = (tokenAmount * batch.purchasePrice) / 1e18;
        uint256 minEthOut = (expectedEthOut * (100 - slippageTolerancePercent)) / 100;

        uint256 ethBalanceBefore = address(this).balance;

        // Execute swap via Universal Router
        _swapExactInputSingle(
            address(TRADING_TOKEN),
            address(0), // ETH
            tokenAmount,
            minEthOut,
            tradingTokenSwapConfig.fee,
            tradingTokenSwapConfig.tickSpacing
        );

        uint256 ethBalanceAfter = address(this).balance;
        uint256 ethReceived = ethBalanceAfter - ethBalanceBefore;

        uint256 profit = ethReceived > (tokenAmount * batch.purchasePrice / 1e18)
            ? ethReceived - (tokenAmount * batch.purchasePrice / 1e18)
            : 0;

        batch.sold = true;

        // Remove from active batches
        _removeActiveBatch(batchId);

        // Update price observation for TWAP after swap
        _updatePriceObservation();

        emit TokenBatchSold(batchId, tokenAmount, currentPricePerToken, profit);

        // Automatically trigger buyback and burn
        _buybackAndBurn(ethReceived);
    }

    /// @notice Buy back $STRATEGY and burn it
    function _buybackAndBurn(uint256 ethAmount) internal {
        if (ethAmount == 0) return;

        uint256 strategyBalanceBefore = balanceOf(address(this));

        // Try to buy $STRATEGY with ETH (may fail if no pool exists)
        try this.swapForBuyback(ethAmount) {
            uint256 strategyBalanceAfter = balanceOf(address(this));
            uint256 strategyBought = strategyBalanceAfter - strategyBalanceBefore;

            // Burn the bought tokens using proper burn
            if (strategyBought > 0) {
                _burn(address(this), strategyBought);
                emit StrategyBuyback(ethAmount, strategyBought);
                emit StrategyBurned(strategyBought);
            }
        } catch Error(string memory reason) {
            // Emit event for failed buyback
            emit BuybackFailed(reason);
        } catch (bytes memory) {
            // Emit event for unknown error
            emit BuybackFailed("Unknown error");
        }
    }

    /// @notice External wrapper for buyback swap (needed for try-catch)
    function swapForBuyback(uint256 ethAmount) external {
        if (msg.sender != address(this)) revert OnlySelf();

        // Calculate minimum with slippage protection
        uint256 minStrategyOut = _calculateMinBuyback(ethAmount);

        _swapExactInputSingle(
            address(0), // ETH
            address(this), // STRATEGY
            ethAmount,
            minStrategyOut,
            strategySwapConfig.fee,
            strategySwapConfig.tickSpacing
        );
    }

    /// @notice Update price observation for TWAP
    function _updatePriceObservation() internal {
        if (!poolInitialized) return;

        IPoolManager poolManager = _POSM.poolManager();
        (uint160 sqrtPriceX96,,,) = poolManager.getSlot0(poolId);

        // Update circular buffer
        currentObservationIndex = uint8((currentObservationIndex + 1) % 8);
        priceObservations[currentObservationIndex] = PriceObservation({
            timestamp: uint32(block.timestamp),
            sqrtPriceX96: sqrtPriceX96
        });
    }

    /// @notice Calculate TWAP from stored observations
    /// @return twapSqrtPriceX96 The time-weighted average sqrt price
    function _getTWAP() internal view returns (uint160 twapSqrtPriceX96) {
        uint256 priceSum = 0;
        uint256 totalWeight = 0;
        uint32 currentTime = uint32(block.timestamp);
        uint32 oldestAllowedTime = currentTime > twapWindow ? currentTime - twapWindow : 0;

        // Iterate through observations in reverse chronological order
        for (uint256 i = 0; i < 8; i++) {
            uint8 index = uint8((currentObservationIndex + 8 - i) % 8);
            PriceObservation memory obs = priceObservations[index];

            // Skip empty observations or those outside the window
            if (obs.timestamp == 0 || obs.timestamp < oldestAllowedTime) {
                continue;
            }

            // Calculate time weight (more recent = higher weight)
            uint256 timeWeight = currentTime - obs.timestamp + 1;
            priceSum += uint256(obs.sqrtPriceX96) * timeWeight;
            totalWeight += timeWeight;
        }

        // If we have observations, return weighted average
        if (totalWeight > 0) {
            return uint160(priceSum / totalWeight);
        }

        // Fallback to current price if no observations
        if (poolInitialized) {
            IPoolManager poolManager = _POSM.poolManager();
            (uint160 sqrtPriceX96,,,) = poolManager.getSlot0(poolId);
            return sqrtPriceX96;
        }

        return 0;
    }

    /// @notice Calculate minimum buyback amount using TWAP to prevent price manipulation
    /// @param ethAmount The amount of ETH to spend on buyback
    /// @return minTokenAmount Minimum amount of tokens expected based on TWAP
    function _calculateMinBuyback(uint256 ethAmount) internal view returns (uint256 minTokenAmount) {
        if (!poolInitialized) return 0;

        // Get TWAP price
        uint160 twapSqrtPriceX96 = _getTWAP();
        if (twapSqrtPriceX96 == 0) return 0;

        // Calculate expected tokens based on TWAP
        // sqrtPriceX96 = sqrt(token1/token0) * 2^96
        // For ETH -> Strategy token swap:
        // If ETH is token0: expectedTokens = ethAmount * (sqrtPrice^2) / (2^192)
        // If ETH is token1: expectedTokens = ethAmount / (sqrtPrice^2) * (2^192)

        uint256 sqrtPriceSquared = uint256(twapSqrtPriceX96) * uint256(twapSqrtPriceX96);

        // Determine if ETH is token0 or token1
        bool ethIsToken0 = Currency.unwrap(poolKey.currency0) < Currency.unwrap(poolKey.currency1);

        uint256 expectedTokens;
        if (ethIsToken0) {
            // ETH is token0, strategy is token1
            expectedTokens = (ethAmount * sqrtPriceSquared) >> 192;
        } else {
            // Strategy is token0, ETH is token1
            expectedTokens = (ethAmount << 192) / sqrtPriceSquared;
        }

        // Apply buyback slippage tolerance
        minTokenAmount = (expectedTokens * (100 - buybackSlippagePercent)) / 100;

        return minTokenAmount;
    }

    /// @notice Set TWAP window duration (owner only)
    /// @param _windowSeconds Time window in seconds for TWAP calculation
    function setTWAPWindow(uint32 _windowSeconds) external onlyOwner {
        require(_windowSeconds >= 300 && _windowSeconds <= 7200, "Window must be 5min-2hr");
        uint32 oldWindow = twapWindow;
        twapWindow = _windowSeconds;
        emit TWAPWindowUpdated(oldWindow, _windowSeconds);
    }

    /* ═══════════════════════════════════════════════════════ */
    /*                    SWAP FUNCTIONS                        */
    /* ═══════════════════════════════════════════════════════ */

    /// @notice Internal swap function using Universal Router
    function _swapExactInputSingle(
        address tokenIn,
        address tokenOut,
        uint256 amountIn,
        uint256 minAmountOut,
        uint24 poolFee,
        int24 poolTickSpacing
    ) internal {
        // Approve token if not ETH (Cache approvals)
        if (tokenIn != address(0)) {
            // Check if we already have approval cached
            if (!_permit2Approved[tokenIn]) {
                IERC20(tokenIn).approve(address(_PERMIT2), type(uint256).max);
                _permit2Approved[tokenIn] = true;
            }

            // Approve exact amount via Permit2
            _PERMIT2.approve(tokenIn, address(_UNIVERSAL_ROUTER), uint160(amountIn), type(uint48).max);
        }

        // Encode swap command
        bytes memory commands = abi.encodePacked(uint8(Commands.V4_SWAP));
        bytes[] memory inputs = new bytes[](1);

        // Create pool key for the swap with configurable fee and tick spacing
        Currency currency0 = tokenIn < tokenOut ? Currency.wrap(tokenIn) : Currency.wrap(tokenOut);
        Currency currency1 = tokenIn < tokenOut ? Currency.wrap(tokenOut) : Currency.wrap(tokenIn);

        PoolKey memory swapKey = PoolKey({
            currency0: currency0,
            currency1: currency1,
            fee: poolFee,
            tickSpacing: poolTickSpacing,
            hooks: IHooks(address(0))
        });

        // Validate pool exists
        IPoolManager poolManager = _POSM.poolManager();
        PoolId pId = swapKey.toId();
        (uint160 sqrtPriceX96,,,) = poolManager.getSlot0(pId);
        if (sqrtPriceX96 == 0) revert PoolDoesNotExist();

        bytes memory actions = abi.encodePacked(
            uint8(Actions.SWAP_EXACT_IN_SINGLE),
            uint8(Actions.SETTLE_ALL),
            uint8(Actions.TAKE_ALL)
        );

        bool zeroForOne = tokenIn < tokenOut;

        bytes[] memory params = new bytes[](3);
        params[0] = abi.encode(
            IV4Router.ExactInputSingleParams({
                poolKey: swapKey,
                zeroForOne: zeroForOne,
                amountIn: uint128(amountIn),
                amountOutMinimum: uint128(minAmountOut),
                hookData: ""
            })
        );

        // SETTLE_ALL: settle the currency we're giving (input token)
        params[1] = abi.encode(
            zeroForOne ? currency0 : currency1,
            amountIn
        );

        // TAKE_ALL: take the currency we're receiving (output token)
        params[2] = abi.encode(
            zeroForOne ? currency1 : currency0,
            minAmountOut
        );

        inputs[0] = abi.encode(actions, params);

        uint256 value = tokenIn == address(0) ? amountIn : 0;
        _UNIVERSAL_ROUTER.execute{value: value}(commands, inputs, block.timestamp + 300);
    }

    /* ═══════════════════════════════════════════════════════ */
    /*                    BATCH MANAGEMENT                      */
    /* ═══════════════════════════════════════════════════════ */

    /// @notice Remove a batch from active list
    function _removeActiveBatch(uint256 batchId) internal {
        for (uint256 i = 0; i < activeBatchIds.length; i++) {
            if (activeBatchIds[i] == batchId) {
                activeBatchIds[i] = activeBatchIds[activeBatchIds.length - 1];
                activeBatchIds.pop();
                break;
            }
        }
    }

    /// @notice Get all active batch IDs
    function getActiveBatches() external view returns (uint256[] memory) {
        return activeBatchIds;
    }

    /* ═══════════════════════════════════════════════════════ */
    /*                    TOKEN FUNCTIONS                       */
    /* ═══════════════════════════════════════════════════════ */

    /// @notice Override transfer to check blacklist
    function transfer(address to, uint256 amount) public override returns (bool) {
        if (isBlacklisted[msg.sender] || isBlacklisted[to]) {
            revert AddressIsBlacklisted();
        }
        return super.transfer(to, amount);
    }

    /// @notice Override transferFrom to check blacklist
    function transferFrom(address from, address to, uint256 amount) public override returns (bool) {
        if (isBlacklisted[from] || isBlacklisted[to]) {
            revert AddressIsBlacklisted();
        }
        return super.transferFrom(from, to, amount);
    }

    /// @notice Allows the contract to receive ETH
    receive() external payable {}

    // TWAP Price Oracle State
    struct PriceObservation {
        uint32 timestamp;
        uint160 sqrtPriceX96;
    }

    PriceObservation[8] public priceObservations; // Circular buffer for last 8 observations
    uint8 public currentObservationIndex;
    uint32 public twapWindow; // TWAP time window in seconds (default: 30 minutes)

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
     */
    uint256[47] private __gap; // Reduced from 50 to 47 (3 slots used by TWAP)
}
"
    },
    "lib/openzeppelin-contracts-upgradeable/contracts/token/ERC20/ERC20Upgradeable.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC20Metadata} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import {ContextUpgradeable} from "../../utils/ContextUpgradeable.sol";
import {IERC20Errors} from "@openzeppelin/contracts/interfaces/draft-IERC6093.sol";
import {Initializable} from "../../proxy/utils/Initializable.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * The default value of {decimals} is 18. To change this, you should override
 * this function so it returns a different value.
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC-20
 * applications.
 */
abstract contract ERC20Upgradeable is Initializable, ContextUpgradeable, IERC20, IERC20Metadata, IERC20Errors {
    /// @custom:storage-location erc7201:openzeppelin.storage.ERC20
    struct ERC20Storage {
        mapping(address account => uint256) _balances;

        mapping(address account => mapping(address spender => uint256)) _allowances;

        uint256 _totalSupply;

        string _name;
        string _symbol;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.ERC20")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant ERC20StorageLocation = 0x52c63247e1f47db19d5ce0460030c497f067ca4cebf71ba98eeadabe20bace00;

    function _getERC20Storage() private pure returns (ERC20Storage storage $) {
        assembly {
            $.slot := ERC20StorageLocation
        }
    }

    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * Both values are immutable: they can only be set once during construction.
     */
    function __ERC20_init(string memory name_, string memory symbol_) internal onlyInitializing {
        __ERC20_init_unchained(name_, symbol_);
    }

    function __ERC20_init_unchained(string memory name_, string memory symbol_) internal onlyInitializing {
        ERC20Storage storage $ = _getERC20Storage();
        $._name = name_;
        $._symbol = symbol_;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual returns (string memory) {
        ERC20Storage storage $ = _getERC20Storage();
        return $._name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual returns (string memory) {
        ERC20Storage storage $ = _getERC20Storage();
        return $._symbol;
    }

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

    /// @inheritdoc IERC20
    function totalSupply() public view virtual returns (uint256) {
        ERC20Storage storage $ = _getERC20Storage();
        return $._totalSupply;
    }

    /// @inheritdoc IERC20
    function balanceOf(address account) public view virtual returns (uint256) {
        ERC20Storage storage $ = _getERC20Storage();
        return $._balances[account];
    }

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

    /// @inheritdoc IERC20
    function allowance(address owner, address spender) public view virtual returns (uint256) {
        ERC20Storage storage $ = _getERC20Storage();
        return $._allowances[owner][spender];
    }

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

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

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _transfer(address from, address to, uint256 value) internal {
        if (from == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        if (to == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(from, to, value);
    }

    /**
     * @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from`
     * (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding
     * this function.
     *
     * Emits a {Transfer} event.
     */
    function _update(address from, address to, uint256 value) internal virtual {
        ERC20Storage storage $ = _getERC20Storage();
        if (from == address(0)) {
            // Overflow check required: The rest of the code assumes that totalSupply never overflows
            $._totalSupply += value;
        } else {
            uint256 fromBalance = $._balances[from];
            if (fromBalance < value) {
                revert ERC20InsufficientBalance(from, fromBalance, value);
            }
            unchecked {
                // Overflow not possible: value <= fromBalance <= totalSupply.
                $._balances[from] = fromBalance - value;
            }
        }

        if (to == address(0)) {
            unchecked {
                // Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply.
                $._totalSupply -= value;
            }
        } else {
            unchecked {
                // Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256.
                $._balances[to] += value;
            }
        }

        emit Transfer(from, to, value);
    }

    /**
     * @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0).
     * Relies on the `_update` mechanism
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead.
     */
    function _mint(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidReceiver(address(0));
        }
        _update(address(0), account, value);
    }

    /**
     * @dev Destroys a `value` amount of tokens from `account`, lowering the total supply.
     * Relies on the `_update` mechanism.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * NOTE: This function is not virtual, {_update} should be overridden instead
     */
    function _burn(address account, uint256 value) internal {
        if (account == address(0)) {
            revert ERC20InvalidSender(address(0));
        }
        _update(account, address(0), value);
    }

    /**
     * @dev Sets `value` as the allowance of `spender` over the `owner`'s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     *
     * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.
     */
    function _approve(address owner, address spender, uint256 value) internal {
        _approve(owner, spender, value, true);
    }

    /**
     * @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event.
     *
     * By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by
     * `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any
     * `Approval` event during `transferFrom` operations.
     *
     * Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to
     * true using the following override:
     *
     * ```solidity
     * function _approve(address owner, address spender, uint256 value, bool) internal virtual override {
     *     super._approve(owner, spender, value, true);
     * }
     * ```
     *
     * Requirements are the same as {_approve}.
     */
    function _approve(address owner, address spender, uint256 value, bool emitEvent) internal virtual {
        ERC20Storage storage $ = _getERC20Storage();
        if (owner == address(0)) {
            revert ERC20InvalidApprover(address(0));
        }
        if (spender == address(0)) {
            revert ERC20InvalidSpender(address(0));
        }
        $._allowances[owner][spender] = value;
        if (emitEvent) {
            emit Approval(owner, spender, value);
        }
    }

    /**
     * @dev Updates `owner`'s allowance for `spender` based on spent `value`.
     *
     * Does not update the allowance value in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Does not emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 value) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance < type(uint256).max) {
            if (currentAllowance < value) {
                revert ERC20InsufficientAllowance(spender, currentAllowance, value);
            }
            unchecked {
                _approve(owner, spender, currentAllowance - value, false);
            }
        }
    }
}
"
    },
    "lib/openzeppelin-contracts-upgradeable/contracts/utils/ReentrancyGuardUpgradeable.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/ReentrancyGuard.sol)

pragma solidity ^0.8.20;
import {Initializable} from "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If EIP-1153 (transient storage) is available on the chain you're deploying at,
 * consider using {ReentrancyGuardTransient} instead.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuardUpgradeable is Initializable {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant NOT_ENTERED = 1;
    uint256 private constant ENTERED = 2;

    /// @custom:storage-location erc7201:openzeppelin.storage.ReentrancyGuard
    struct ReentrancyGuardStorage {
        uint256 _status;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.ReentrancyGuard")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant ReentrancyGuardStorageLocation = 0x9b779b17422d0df92223018b32b4d1fa46e071723d6817e2486d003becc55f00;

    function _getReentrancyGuardStorage() private pure returns (ReentrancyGuardStorage storage $) {
        assembly {
            $.slot := ReentrancyGuardStorageLocation
        }
    }

    /**
     * @dev Unauthorized reentrant call.
     */
    error ReentrancyGuardReentrantCall();

    function __ReentrancyGuard_init() internal onlyInitializing {
        __ReentrancyGuard_init_unchained();
    }

    function __ReentrancyGuard_init_unchained() internal onlyInitializing {
        ReentrancyGuardStorage storage $ = _getReentrancyGuardStorage();
        $._status = NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        ReentrancyGuardStorage storage $ = _getReentrancyGuardStorage();
        // On the first call to nonReentrant, _status will be NOT_ENTERED
        if ($._status == ENTERED) {
            revert ReentrancyGuardReentrantCall();
        }

        // Any calls to nonReentrant after this point will fail
        $._status = ENTERED;
    }

    function _nonReentrantAfter() private {
        ReentrancyGuardStorage storage $ = _getReentrancyGuardStorage();
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        $._status = NOT_ENTERED;
    }

    /**
     * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
     * `nonReentrant` function in the call stack.
     */
    function _reentrancyGuardEntered() internal view returns (bool) {
        ReentrancyGuardStorage storage $ = _getReentrancyGuardStorage();
        return $._status == ENTERED;
    }
}
"
    },
    "lib/openzeppelin-contracts-upgradeable/contracts/access/OwnableUpgradeable.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

pragma solidity ^0.8.20;

import {ContextUpgradeable} from "../utils/ContextUpgradeable.sol";
import {Initializable} from "../proxy/utils/Initializable.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * The initial owner is set to the address provided by the deployer. This can
 * later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {
    /// @custom:storage-location erc7201:openzeppelin.storage.Ownable
    struct OwnableStorage {
        address _owner;
    }

    // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Ownable")) - 1)) & ~bytes32(uint256(0xff))
    bytes32 private constant OwnableStorageLocation = 0x9016d09d72d40fdae2fd8ceac6b6234c7706214fd39c1cd1e609a0528c199300;

    function _getOwnableStorage() private pure returns (OwnableStorage storage $) {
        assembly {
            $.slot := OwnableStorageLocation
        }
    }

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    function __Ownable_init(address initialOwner) internal onlyInitializing {
        __Ownable_init_unchained(initialOwner);
    }

    function __Ownable_init_unchained(address initialOwner) internal onlyInitializing {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        OwnableStorage storage $ = _getOwnableStorage();
        return $._owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        if (newOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        OwnableStorage storage $ = _getOwnableStorage();
        address oldOwner = $._owner;
        $._owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}
"
    },
    "lib/openzeppelin-contracts-upgradeable/contracts/proxy/utils/UUPSUpgradeable.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.3.0) (proxy/utils/UUPSUpgradeable.sol)

pragma solidity ^0.8.22;

import {IERC1822Proxiable} from "@openzeppelin/contracts/interfaces/draft-IERC1822.sol";
import {ERC1967Utils} from "@openzeppelin/contracts/proxy/ERC1967/ERC1967Utils.sol";
import {Initializable} from "./Initializable.sol";

/**
 * @dev An upgradeability mechanism designed for UUPS proxies. The functions included here can perform an upgrade of an
 * {ERC1967Proxy}, when this contract is set as the implementation behind such a proxy.
 *
 * A security mechanism ensures that an upgrade does not turn off upgradeability accidentally, although this risk is
 * reinstated if the upgrade retains upgradeability but removes the security mechanism, e.g. by replacing
 * `UUPSUpgradeable` with a custom implementation of upgrades.
 *
 * The {_authorizeUpgrade} function must be overridden to include access restriction to the upgrade mechanism.
 */
abstract contract UUPSUpgradeable is Initializable, IERC1822Proxiable {
    /// @custom:oz-upgrades-unsafe-allow state-variable-immutable
    address private immutable __self = address(this);

    /**
     * @dev The version of the upgrade interface of the contract. If this getter is missing, both `upgradeTo(address)`
     * and `upgradeToAndCall(address,bytes)` are present, and `upgradeTo` must be used if no function should be called,
     * while `upgradeToAndCall` will invoke the `receive` function if the second argument is the empty byte string.
     * If the getter returns `"5.0.0"`, only `upgradeToAndCall(address,bytes)` is present, and the second argument must
     * be the empty byte string if no function should be called, making it impossible to invoke the `receive` function
     * during an upgrade.
     */
    string public constant UPGRADE_INTERFACE_VERSION = "5.0.0";

    /**
     * @dev The call is from an unauthorized context.
     */
    error UUPSUnauthorizedCallContext();

    /**
     * @dev The storage `slot` is unsupported as a UUID.
     */
    error UUPSUnsupportedProxiableUUID(bytes32 slot);

    /**
     * @dev Check that the execution is being performed through a delegatecall call and that the execution context is
     * a proxy contract with an implementation (as defined in ERC-1967) pointing to self. This should only be the case
     * for UUPS and transparent proxies that are using the current contract as their implementation. E