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pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {IUniswapV2Router} from "../interfaces/IUniswapV2Router.sol";
import "@openzeppelin/contracts/security/Pausable.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import {IMasterChef} from "../interfaces/IMasterChef.sol";
import {IPool} from "../interfaces/IPool.sol";
import {IRouterV2} from "../interfaces/IRouterV2.sol";

/**
 * @dev Implementation of a strategy to get yields from farming LP Pools in SpookySwap.
 * SpookySwap is an automated market maker (“AMM”) that allows two tokens to be exchanged on Fantom's Opera Network.
 *
 * This strategy deposits whatever funds it receives from the vault into the selected masterChef pool.
 * rewards from providing liquidity are farmed every few minutes, sold and split 50/50.
 * The corresponding pair of assets are bought and more liquidity is added to the masterChef pool.
 *
 * Expect the amount of LP tokens you have to grow over time while you have assets deposit
 */
contract HogAutoCompound is Ownable, Pausable {
    using SafeERC20 for IERC20;
    using Address for address;
    using SafeMath for uint256;

    /**
     * @dev Tokens Used:
     * {os} - Required for liquidity routing when doing swaps.
     * {ghog} - Token generated by staking our funds.
     * {lpPair} - LP Token that the strategy maximizes.
     * {lpToken0, lpToken1} - Tokens that the strategy maximizes. IPool tokens.
     */
    address public os = address(0xb1e25689D55734FD3ffFc939c4C3Eb52DFf8A794);
    address public ghog = address(0x0e899dA2aD0817ed850ce68f7f489688E4D42D9D);
    address public lpPair;
    address public lpToken0;
    address public lpToken1;

    /**
     * @dev Third Party Contracts:
     * {uniRouter} - the uniRouter for target DEX
     * {masterChef} - masterChef contract
     * {poolId} - masterChef pool id
     */
    address public uniRouter = address(0xF5F7231073b3B41c04BA655e1a7438b1a7b29c27);
    address public masterChef = address(0xA7141905E2972c295577882552Bede5406dAF5EC);
    uint8 public poolId;

    /**
     * @dev Hog Contracts:
     * {treasury} - Address of the Hog treasury
     * {vault} - Address of the vault that controls the strategy's funds.
     */
    address public treasury;
    address public vault;

     /**
     * @dev Distribution of fees earned. This allocations relative to the % implemented on
     * Current implementation separates 5% for fees. Can be changed through the constructor
     * Inputs in constructor should be ratios between the Fee and Max Fee, divisble into percents by 10000
     *
     * {callFee} - Percent of the totalFee reserved for the harvester (1000 = 10% of total fee: 0.5% by default)
     * {treasuryFee} - Percent of the totalFee taken by maintainers of the software (9000 = 90% of total fee: 4.5% by default)
     * {securityFee} - Fee taxed when a user withdraws funds. Taken to prevent flash deposit/harvest attacks.
     * These funds are redistributed to stakers in the pool.
     *
     * {totalFee} - divided by 10,000 to determine the % fee. Set to 5% by default and
     * lowered as necessary to provide users with the most competitive APY.
     *
     * {MAX_FEE} - Maximum fee allowed by the strategy. Hard-capped at 5%.
     * {PERCENT_DIVISOR} - Constant used to safely calculate the correct percentages.
     */

    uint public callFee = 1000;
    uint public treasuryFee = 9000;
    uint public securityFee = 10;
    uint public totalFee = 450;
    uint constant public MAX_FEE = 500;
    uint constant  public PERCENT_DIVISOR = 10000;

    /**
     * @dev Routes we take to swap tokens using PanghogSwap.
     * {ghogToOsRoute} - Route we take to get from {ghog} into {os}.
     * {ghogToLp0Route} - Route we take to get from {ghog} into {lpToken0}.
     * {ghogToLp1Route} - Route we take to get from {ghog} into {lpToken1}.
     */
    IRouterV2.Route[] public ghogToOsRoute;
    IRouterV2.Route[] public ghogToLp0Route;
    IRouterV2.Route[] public ghogToLp1Route;

    // Add stable pair flag
    bool public isStablePair;

    /**
     * {StratHarvest} Event that is fired each time someone harvests the strat.
     * {TotalFeeUpdated} Event that is fired each time the total fee is updated.
     * {CallFeeUpdated} Event that is fired each time the call fee is updated.
     */
    event StratHarvest(address indexed harvester);
    event TotalFeeUpdated(uint newFee);
    event CallFeeUpdated(uint newCallFee, uint newTreasuryFee);

    /**
     * @dev Initializes the strategy. Sets parameters, saves routes, and gives allowances.
     * @notice see documentation for each variable above its respective declaration.
     */
    constructor (
      address _lpPair,
      uint8 _poolId,
      address _vault,
        address _treasury,
        bool _isStablePair
    ) public {
        lpPair = _lpPair;
        poolId = _poolId;
        vault = _vault;
        treasury = _treasury;
        isStablePair = _isStablePair;

        lpToken0 = IPool(lpPair).token0();
        lpToken1 = IPool(lpPair).token1();

        // Initialize ghogToOsRoute
        _initializeRoutes(ghog, os, _isStablePair, 1, ghogToOsRoute);

        // Initialize ghogToLp0Route
        if (lpToken0 == os) {
            _initializeRoutes(ghog, os, _isStablePair, 1, ghogToLp0Route);
        } else if (lpToken0 != ghog) {
            _initializeRoutes2Step(ghog, os, lpToken0, _isStablePair, ghogToLp0Route);
        }

        // Initialize ghogToLp1Route
        if (lpToken1 == os) {
            _initializeRoutes(ghog, os, _isStablePair, 1, ghogToLp1Route);
        } else if (lpToken1 != ghog) {
            _initializeRoutes2Step(ghog, os, lpToken1, _isStablePair, ghogToLp1Route);
        }

        giveAllowances();
    }

    // Helper function to initialize single-step routes
    function _initializeRoutes(
        address from,
        address to,
        bool stable,
        uint size,
        IRouterV2.Route[] storage routes
    ) internal {
        while(routes.length > 0) {
            routes.pop();
        }
        routes.push(IRouterV2.Route({
            from: from,
            to: to,
            stable: stable
        }));
    }

    // Helper function to initialize two-step routes
    function _initializeRoutes2Step(
        address start,
        address middle,
        address end,
        bool stable,
        IRouterV2.Route[] storage routes
    ) internal {
        while(routes.length > 0) {
            routes.pop();
        }
        routes.push(IRouterV2.Route({
            from: start,
            to: middle,
            stable: stable
        }));
        routes.push(IRouterV2.Route({
            from: middle,
            to: end,
            stable: stable
        }));
    }

    /**
     * @dev Function that puts the funds to work.
     * It gets called whenever someone deposits in the strategy's vault contract.
     * It deposits {lpPair} in the masterChef to farm {ghog}
     */
    function deposit() public whenNotPaused {
        uint256 pairBal = IERC20(lpPair).balanceOf(address(this));

        if (pairBal > 0) {
            IMasterChef(masterChef).deposit(poolId, pairBal);
        }
    }

    /**
     * @dev Withdraws funds and sents them back to the vault.
     * It withdraws {lpPair} from the masterChef.
     * The available {lpPair} minus fees is returned to the vault.
     */
    function withdraw(uint256 _amount) external {
        require(msg.sender == vault, "!vault");

        uint256 pairBal = IERC20(lpPair).balanceOf(address(this));

        if (pairBal < _amount) {
            IMasterChef(masterChef).withdraw(poolId, _amount.sub(pairBal));
            pairBal = IERC20(lpPair).balanceOf(address(this));
        }

        if (pairBal > _amount) {
            pairBal = _amount;
        }
        uint256 withdrawFee = pairBal.mul(securityFee).div(PERCENT_DIVISOR);
        IERC20(lpPair).safeTransfer(vault, pairBal.sub(withdrawFee));
    }

    /**
     * @dev Core function of the strat, in charge of collecting and re-investing rewards.
     * 1. It claims rewards from the masterChef.
     * 2. It charges the system fees to simplify the split.
     * 3. It swaps the {ghog} token for {lpToken0} & {lpToken1}
     * 4. Adds more liquidity to the pool.
     * 5. It deposits the new LP tokens.
     */
    function harvest() external whenNotPaused {
        require(!Address.isContract(msg.sender), "!contract");
        IMasterChef(masterChef).deposit(poolId, 0);
        chargeFees();
        addLiquidity();
        deposit();

        emit StratHarvest(msg.sender);
    }

    /**
     * @dev Takes out fees from the rewards. Set by constructor
     * callFeeToUser is set as a percentage of the fee,
     * as is treasuryFeeToVault
     */
    function chargeFees() internal {
        uint256 toOs = IERC20(ghog).balanceOf(address(this)).mul(totalFee).div(PERCENT_DIVISOR);
        
        // Get the minimum amount out (you can adjust the slippage percentage)
        uint[] memory amounts = IRouterV2(uniRouter).getAmountsOut(toOs, ghogToOsRoute);
        uint minAmountOut = amounts[amounts.length - 1].mul(95).div(100); // 5% slippage

        IRouterV2(uniRouter).swapExactTokensForTokensSupportingFeeOnTransferTokens(
            toOs, 
            minAmountOut,  // Set minimum amount out to prevent high slippage
            ghogToOsRoute, 
            address(this), 
            block.timestamp.add(600)
        );

        uint256 osBal = IERC20(os).balanceOf(address(this));

        uint256 callFeeToUser = osBal.mul(callFee).div(PERCENT_DIVISOR);
        IERC20(os).safeTransfer(msg.sender, callFeeToUser);

        uint256 treasuryFeeToVault = osBal.mul(treasuryFee).div(PERCENT_DIVISOR);
        IERC20(os).safeTransfer(treasury, treasuryFeeToVault);
    }

    /**
     * @dev Swaps {ghog} for {lpToken0}, {lpToken1} & {os} using SpookySwap.
     */
    function addLiquidity() internal {
        uint256 ghogHalf = IERC20(ghog).balanceOf(address(this)).div(2);

        if (lpToken0 != ghog) {
            IRouterV2(uniRouter).swapExactTokensForTokensSupportingFeeOnTransferTokens(
                ghogHalf, 
                0, 
                ghogToLp0Route, 
                address(this), 
                block.timestamp.add(600)
            );
        }

        if (lpToken1 != ghog) {
            IRouterV2(uniRouter).swapExactTokensForTokensSupportingFeeOnTransferTokens(
                ghogHalf, 
                0, 
                ghogToLp1Route, 
                address(this), 
                block.timestamp.add(600)
            );
        }

        uint256 lp0Bal = IERC20(lpToken0).balanceOf(address(this));
        uint256 lp1Bal = IERC20(lpToken1).balanceOf(address(this));
        IRouterV2(uniRouter).addLiquidity(
            lpToken0, 
            lpToken1, 
            isStablePair,
            lp0Bal, 
            lp1Bal, 
            1, 
            1, 
            address(this), 
            block.timestamp.add(600)
        );
    }

    /**
     * @dev Function to calculate the total underlaying {lpPair} held by the strat.
     * It takes into account both the funds in hand, as the funds allocated in the masterChef.
     */
    function balanceOf() public view returns (uint256) {
        return balanceOfLpPair().add(balanceOfPool());
    }

    /**
     * @dev It calculates how much {lpPair} the contract holds.
     */
    function balanceOfLpPair() public view returns (uint256) {
        return IERC20(lpPair).balanceOf(address(this));
    }

    /**
     * @dev It calculates how much {lpPair} the strategy has allocated in the masterChef
     */
    function balanceOfPool() public view returns (uint256) {
        (uint256 _amount, ) = IMasterChef(masterChef).userInfo(poolId, address(this));
        return _amount;
    }

    /**
     * @dev Function that has to be called as part of strat migration. It sends all the available funds back to the
     * vault, ready to be migrated to the new strat.
     */
    function retireStrat() external {
        require(msg.sender == vault, "!vault");

        IMasterChef(masterChef).emergencyWithdraw(poolId);

        uint256 pairBal = IERC20(lpPair).balanceOf(address(this));
        IERC20(lpPair).transfer(vault, pairBal);
    }

    /**
     * @dev Pauses deposits. Withdraws all funds from the masterChef, leaving rewards behind
     */
    function panic() public onlyOwner {
        pause();
        IMasterChef(masterChef).withdraw(poolId, balanceOfPool());
    }

    /**
     * @dev Pauses the strat.
     */
    function pause() public onlyOwner {
      _pause();
      removeAllowances();
    }

    /**
     * @dev Unpauses the strat.
     */
    function unpause() external onlyOwner {
        _unpause();

        giveAllowances();

        deposit();
    }

    function giveAllowances() internal {
        uint256 maxUint = type(uint256).max;
        IERC20(lpPair).safeApprove(masterChef, maxUint);
        IERC20(ghog).safeApprove(uniRouter, maxUint);

        IERC20(lpToken0).safeApprove(uniRouter, 0);
        IERC20(lpToken0).safeApprove(uniRouter, maxUint);

        IERC20(lpToken1).safeApprove(uniRouter, 0);
        IERC20(lpToken1).safeApprove(uniRouter, maxUint);
    }

    function removeAllowances() internal {
        IERC20(lpPair).safeApprove(masterChef, 0);
        IERC20(ghog).safeApprove(uniRouter, 0);
        IERC20(lpToken0).safeApprove(uniRouter, 0);
        IERC20(lpToken1).safeApprove(uniRouter, 0);
    }

    /**
     * @dev updates the total fee, capped at 5%
     */
    function updateTotalFee(uint _totalFee) external onlyOwner returns (bool) {
      require(_totalFee <= MAX_FEE, "Fee Too High");
      totalFee = _totalFee;
      emit TotalFeeUpdated(totalFee);
      return true;
    }

    /**
     * @dev updates the call fee and adjusts the treasury fee to cover the difference
     */
    function updateCallFee(uint _callFee) external onlyOwner returns (bool) {
      callFee = _callFee;
      treasuryFee = PERCENT_DIVISOR.sub(callFee);
      emit CallFeeUpdated(callFee, treasuryFee);
      return true;
    }

    function updateTreasury(address newTreasury) external onlyOwner returns (bool) {
      treasury = newTreasury;
      return true;
    }

    // Add function to update stable status
    function updateStablePair(bool _isStablePair) external onlyOwner {
        isStablePair = _isStablePair;
        
        // Update routes with new stable status
        for (uint i = 0; i < ghogToOsRoute.length; i++) {
            ghogToOsRoute[i].stable = _isStablePair;
        }
        for (uint i = 0; i < ghogToLp0Route.length; i++) {
            ghogToLp0Route[i].stable = _isStablePair;
        }
        for (uint i = 0; i < ghogToLp1Route.length; i++) {
            ghogToLp1Route[i].stable = _isStablePair;
        }
    }
}

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

pragma solidity ^0.8.0;

import "../utils/Context.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.
 *
 * By default, the owner account will be the one that deploys the contract. 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 Ownable is Context {
    address private _owner;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @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) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @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 {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    constructor() {
        _paused = false;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        _requireNotPaused();
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        _requirePaused();
        _;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }

    /**
     * @dev Throws if the contract is paused.
     */
    function _requireNotPaused() internal view virtual {
        require(!paused(), "Pausable: paused");
    }

    /**
     * @dev Throws if the contract is not paused.
     */
    function _requirePaused() internal view virtual {
        require(paused(), "Pausable: not paused");
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}

// 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
// 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
// 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 v4.9.4) (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

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

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

pragma solidity ^0.8.0;

interface IMasterChef {
    function poolLength() external view returns (uint256);
    function setBooPerSecond(uint256 _rewardTokenPerSecond) external;
    function getMultiplier(uint256 _from, uint256 _to) external view returns (uint256);
    function pendingBOO(uint256 _pid, address _user) external view returns (uint256);
    function massUpdatePools() external;
    function updatePool(uint256 _pid) external;
    function deposit(uint256 _pid, uint256 _amount) external;
    function withdraw(uint256 _pid, uint256 _amount) external;
    function userInfo(uint256 _pid, address _user) external view returns (uint256, uint256);
    function emergencyWithdraw(uint256 _pid) external;
}

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.8.26;

interface IPool {
    error NOT_AUTHORIZED();
    error UNSTABLE_RATIO();
    /// @dev safe transfer failed
    error STF();
    error OVERFLOW();
    /// @dev skim disabled
    error SD();
    /// @dev insufficient liquidity minted
    error ILM();
    /// @dev insufficient liquidity burned
    error ILB();
    /// @dev insufficient output amount
    error IOA();
    /// @dev insufficient input amount
    error IIA();
    error IL();
    error IT();
    error K();

    event Mint(address indexed sender, uint256 amount0, uint256 amount1);
    event Burn(
        address indexed sender,
        uint256 amount0,
        uint256 amount1,
        address indexed to
    );
    event Swap(
        address indexed sender,
        uint256 amount0In,
        uint256 amount1In,
        uint256 amount0Out,
        uint256 amount1Out,
        address indexed to
    );
    event Sync(uint112 reserve0, uint112 reserve1);

        /// @notice Same as prices with with an additional window argument.
    ///         Window = 2 means 2 * 30min (or 1 hr) between observations
    /// @param tokenIn .
    /// @param amountIn .
    /// @param points .
    /// @param window .
    /// @return Array of TWAP prices
    function sample(
        address tokenIn,
        uint256 amountIn,
        uint256 points,
        uint256 window
    ) external view returns (uint256[] memory);

    function observations(uint256 index) external view returns (uint256 timestamp, uint256 reserve0Cumulative, uint256 reserve1Cumulative);

    function current(address tokenIn, uint256 amountIn) external view returns (uint256 amountOut);

    /// @notice Provides twap price with user configured granularity, up to the full window size
    /// @param tokenIn .
    /// @param amountIn .
    /// @param granularity .
    /// @return amountOut .
    function quote(address tokenIn, uint256 amountIn, uint256 granularity) external view returns (uint256 amountOut);

    /// @notice Get the number of observations recorded
    function observationLength() external view returns (uint256);

    /// @notice Address of token in the pool with the lower address value
    function token0() external view returns (address);

    /// @notice Address of token in the poool with the higher address value
    function token1() external view returns (address);

    /// @notice initialize the pool, called only once programatically
    function initialize(
        address _token0,
        address _token1,
        bool _stable
    ) external;

    /// @notice calculate the current reserves of the pool and their last 'seen' timestamp
    /// @return _reserve0 amount of token0 in reserves
    /// @return _reserve1 amount of token1 in reserves
    /// @return _blockTimestampLast the timestamp when the pool was last updated
    function getReserves()
        external
        view
        returns (
            uint112 _reserve0,
            uint112 _reserve1,
            uint32 _blockTimestampLast
        );

    /// @notice mint the pair tokens (LPs)
    /// @param to where to mint the LP tokens to
    /// @return liquidity amount of LP tokens to mint
    function mint(address to) external returns (uint256 liquidity);

    /// @notice burn the pair tokens (LPs)
    /// @param to where to send the underlying
    /// @return amount0 amount of amount0
    /// @return amount1 amount of amount1
    function burn(
        address to
    ) external returns (uint256 amount0, uint256 amount1);

    /// @notice direct swap through the pool
    function swap(
        uint256 amount0Out,
        uint256 amount1Out,
        address to,
        bytes calldata data
    ) external;

    /// @notice force balances to match reserves, can be used to harvest rebases from rebasing tokens or other external factors
    /// @param to where to send the excess tokens to
    function skim(address to) external;

    /// @notice force reserves to match balances, prevents skim excess if skim is enabled
    function sync() external;

    /// @notice set the pair fees contract address
    function setFeeRecipient(address _pairFees) external;

    /// @notice set the feesplit variable
    function setFeeSplit(uint256 _feeSplit) external;

    /// @notice sets the swap fee of the pair
    /// @dev max of 10_000 (10%)
    /// @param _fee the fee
    function setFee(uint256 _fee) external;

    /// @notice 'mint' the fees as LP tokens
    /// @dev this is used for protocol/voter fees
    function mintFee() external;

    /// @notice calculates the amount of tokens to receive post swap
    /// @param amountIn the token amount
    /// @param tokenIn the address of the token
    function getAmountOut(
        uint256 amountIn,
        address tokenIn
    ) external view returns (uint256 amountOut);

    /// @notice returns various metadata about the pair
    function metadata()
        external
        view
        returns (
            uint256 _decimals0,
            uint256 _decimals1,
            uint256 _reserve0,
            uint256 _reserve1,
            bool _stable,
            address _token0,
            address _token1
        );

    /// @notice returns the feeSplit of the pair
    function feeSplit() external view returns (uint256);

    /// @notice returns the fee of the pair
    function fee() external view returns (uint256);

    /// @notice returns the feeRecipient of the pair
    function feeRecipient() external view returns (address);

}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface IRouterV2 {
    struct Route {
        address from;
        address to;
        bool stable;
    }

    function factory() external pure returns (address);
    function wETH() external pure returns (address);

    function sortTokens(address tokenA, address tokenB) external pure returns (address token0, address token1);
    function pairFor(address tokenA, address tokenB, bool stable) external view returns (address pair);

    function quoteLiquidity(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
    function getReserves(address tokenA, address tokenB, bool stable) external view returns (uint reserveA, uint reserveB);
    function getAmountOut(uint amountIn, address tokenIn, address tokenOut) external view returns (uint amount, bool stable);
    function getAmountsOut(uint amountIn, Route[] memory routes) external view returns (uint[] memory amounts);

    function addLiquidity(
        address tokenA,
        address tokenB,
        bool stable,
        uint amountADesired,
        uint amountBDesired,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB, uint liquidity);

    function addLiquidityETH(
        address token,
        bool stable,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);

    function removeLiquidity(
        address tokenA,
        address tokenB,
        bool stable,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB);

    function removeLiquidityETH(
        address token,
        bool stable,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountToken, uint amountETH);

    function swapExactTokensForTokens(
        uint amountIn,
        uint amountOutMin,
        Route[] calldata routes,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);

    function swapExactETHForTokens(
        uint amountOutMin,
        Route[] calldata routes,
        address to,
        uint deadline
    ) external payable returns (uint[] memory amounts);

    function swapExactTokensForETH(
        uint amountIn,
        uint amountOutMin,
        Route[] calldata routes,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        Route[] calldata routes,
        address to,
        uint deadline
    ) external;

    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint amountOutMin,
        Route[] calldata routes,
        address to,
        uint deadline
    ) external payable;

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        Route[] calldata routes,
        address to,
        uint deadline
    ) external;

    // Events
    event Swap(address indexed sender, uint amount0In, address _tokenIn, address indexed to, bool stable);
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

interface IUniswapV2Router {
    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint amountADesired,
        uint amountBDesired,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB, uint liquidity);

    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);

    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB);

    function removeLiquidityETH(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountToken, uint amountETH);

    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountA, uint amountB);

    function removeLiquidityETHWithPermit(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountToken, uint amountETH);

    function swapExactTokensForTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);

    function swapTokensForExactTokens(
        uint amountOut,
        uint amountInMax,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);

    function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
    external
    payable
    returns (uint[] memory amounts);

    function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
    external
    returns (uint[] memory amounts);

    function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
    external
    returns (uint[] memory amounts);

    function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline) external payable
    returns (uint[] memory amounts);

    function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);

    function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);

    function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);

    function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);

    function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);

    function removeLiquidityETHSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountETH);

    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountETH);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;

    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable;

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
}

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

• No Contract Security Audit Submitted- Submit Audit Here

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ip","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"retireStrat","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"securityFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"treasury","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"treasuryFee","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"uniRouter","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_callFee","type":"uint256"}],"name":"updateCallFee","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_isStablePair","type":"bool"}],"name":"updateStablePair","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_totalFee","type":"uint256"}],"name":"updateTotalFee","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newTreasury","type":"address"}],"name":"updateTreasury","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"vault","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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000000000000000000000000784dd93f3c42dcbf88d45e6ad6d3cc20da169a600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000640ea78b7224e6eb914b0bec82929564e25f1a9a0000000000000000000000005436d734f05ef1f2456994f2f2aab1f9e862f55e0000000000000000000000000000000000000000000000000000000000000001

-----Decoded View---------------
Arg [0] : _lpPair (address): 0x784DD93F3c42DCbF88D45E6ad6D3CC20dA169a60
Arg [1] : _poolId (uint8): 0
Arg [2] : _vault (address): 0x640ea78b7224e6Eb914b0BEc82929564E25F1A9a
Arg [3] : _treasury (address): 0x5436D734F05ef1f2456994F2f2aaB1f9E862F55E
Arg [4] : _isStablePair (bool): True

-----Encoded View---------------
5 Constructor Arguments found :
Arg [0] : 000000000000000000000000784dd93f3c42dcbf88d45e6ad6d3cc20da169a60
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [2] : 000000000000000000000000640ea78b7224e6eb914b0bec82929564e25f1a9a
Arg [3] : 0000000000000000000000005436d734f05ef1f2456994f2f2aab1f9e862f55e
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000001