// SPDX-License-Identifier: MIT

// File: libs/IRewarder.sol



pragma solidity 0.6.12;

interface IRewarder {
    function poolLength() external view returns (uint256);
    function userInfo(uint256 _pid, address _user) external view returns (uint256, uint256);
    function pendingToken(uint256 _pid, address _user) external view returns (uint256);
    function deposit(uint256 pid, uint256 amount, address to) external;
    function withdraw(uint256 pid, uint256 amount, address to) external;
    function harvest(uint256 pid, address to) external;
    function withdrawAndHarvest(uint256 pid, uint256 amount, address to) external;
    function emergencyWithdraw(uint256 pid, address to) external;
}
// File: libs/IMiniChefV2.sol



pragma solidity 0.6.12;

interface IMiniChefV2 {
    function poolLength() external view returns (uint256);
    function userInfo(uint256 _pid, address _user) external view returns (uint256, uint256);
    function pendingSushi(uint256 _pid, address _user) external view returns (uint256);
    function deposit(uint256 pid, uint256 amount, address to) external;
    function withdraw(uint256 pid, uint256 amount, address to) external;
    function harvest(uint256 pid, address to) external;
    function withdrawAndHarvest(uint256 pid, uint256 amount, address to) external;
    function emergencyWithdraw(uint256 pid, address to) external;
    function rewarder(uint256 pid) external view returns (address);
}
// File: libs/IUniswapV2Pair.sol



pragma solidity 0.6.12;

interface IUniswapV2Pair {
    function factory() external view returns (address);
    function token0() external view returns (address);
    function token1() external view returns (address);
    function burn(address to) external returns (uint amount0, uint amount1);
    function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
}
// File: libs/IUniswapRouterETH.sol



pragma solidity 0.6.12;

interface IUniswapRouterETH {
    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 swapExactTokensForTokens(
        uint amountIn,
        uint amountOutMin,
        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 swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);

    function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
}
// File: libs/IRewardPool.sol



pragma solidity 0.6.12;

interface IRewardPool {
    function deposit(uint256 amount) external;
    function stake(uint256 amount) external;
    function withdraw(uint256 amount) external;
    function getReward() external;
    function balanceOf(address account) external view returns (uint256);
    function earned(address account) external view returns (uint256);
}
// File: libs/Context.sol



pragma solidity 0.6.12;

// File @openzeppelin/contracts/utils/Context.sol@v3.4.1

/*
 * @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 GSN 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 payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}
// File: libs/Pausable.sol



pragma solidity 0.6.12;


/**
 * @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() public {
        _paused = false;
    }

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

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

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



pragma solidity 0.6.12;


// File @openzeppelin/contracts/access/Ownable.sol@v3.4.1

/**
 * @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 () internal {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

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

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = 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");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}
// File: StratManagerLP.sol



pragma solidity 0.6.12;



contract StratManagerLP is Ownable, Pausable {
    /**
     * @dev Beefy Contracts:
     * {keeper} - Address to manage a few lower risk features of the strat
     * {strategist} - Address of the strategy author/deployer where strategist fee will go.
     * {vault} - Address of the vault that controls the strategy's funds.
     * {unirouter} - Address of exchange to execute swaps.
     */
    address public keeper;
    address public strategist;
    address public unirouter;
    address public vault;
    address public beefyFeeRecipient;
    /**
     * @dev Initializes the base strategy.
     * @param _keeper address to use as alternative owner.
     * @param _strategist address where strategist fees go.
     * @param _unirouter router to use for swaps
     * @param _vault address of parent vault.
     * @param _beefyFeeRecipient address where to send Beefy's fees.
     */
    constructor(
        address _keeper,
        address _strategist,
        address _unirouter,
        address _vault,
        address _beefyFeeRecipient
    ) public {
        keeper = _keeper;
        strategist = _strategist;
        unirouter = _unirouter;
        vault = _vault;
        beefyFeeRecipient = _beefyFeeRecipient;
    }
    // checks that caller is either owner or keeper.
    modifier onlyManager() {
        require(msg.sender == owner() || msg.sender == keeper, "!manager");
        _;
    }
    /**
     * @dev Updates address of the strat keeper.
     * @param _keeper new keeper address.
     */
    function setKeeper(address _keeper) external onlyManager {
        keeper = _keeper;
    }
    /**
     * @dev Updates address where strategist fee earnings will go.
     * @param _strategist new strategist address.
     */
    function setStrategist(address _strategist) external {
        require(msg.sender == strategist, "!strategist");
        strategist = _strategist;
    }
    /**
     * @dev Updates router that will be used for swaps.
     * @param _unirouter new unirouter address.
     */
    function setUnirouter(address _unirouter) external onlyOwner {
        unirouter = _unirouter;
    }
    /**
     * @dev Updates parent vault.
     * @param _vault new vault address.
     */
    function setVault(address _vault) external onlyOwner {
        vault = _vault;
    }
    /**
     * @dev Updates beefy fee recipient.
     * @param _beefyFeeRecipient new beefy fee recipient address.
     */
    function setBeefyFeeRecipient(address _beefyFeeRecipient) external onlyOwner {
        beefyFeeRecipient = _beefyFeeRecipient;
    }
    /**
     * @dev Function to synchronize balances before new user deposit.
     * Can be overridden in the strategy.
     */
    function beforeDeposit() external virtual {}
}
// File: FeeManagerLP.sol



pragma solidity 0.6.12;


abstract contract FeeManagerLP is StratManagerLP {
    uint constant public STRATEGIST_FEE = 112;
    uint constant public MAX_FEE = 1000;
    uint constant public MAX_CALL_FEE = 111;
    uint constant public WITHDRAWAL_FEE_CAP = 50;
    uint constant public WITHDRAWAL_MAX = 10000;
    uint public withdrawalFee = 10;
    uint public callFee = 111;
    uint public beefyFee = MAX_FEE - STRATEGIST_FEE - callFee;
    function setCallFee(uint256 _fee) public onlyManager {
        require(_fee <= MAX_CALL_FEE, "!cap");
        
        callFee = _fee;
        beefyFee = MAX_FEE - STRATEGIST_FEE - callFee;
    }
    function setWithdrawalFee(uint256 _fee) public onlyManager {
        require(_fee <= WITHDRAWAL_FEE_CAP, "!cap");
        withdrawalFee = _fee;
    }
}
// File: libs/SafeMath.sol



pragma solidity 0.6.12;

// File @openzeppelin/contracts/math/SafeMath.sol@v3.4.1

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
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) {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        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) {
        // 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) {
        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) {
        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) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    /**
     * @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) {
        require(b <= a, "SafeMath: subtraction overflow");
        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) {
        if (a == 0) return 0;
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }

    /**
     * @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. 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) internal pure returns (uint256) {
        require(b > 0, "SafeMath: division by zero");
        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) {
        require(b > 0, "SafeMath: modulo by zero");
        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) {
        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.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * 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) {
        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) {
        require(b > 0, errorMessage);
        return a % b;
    }
}
// File: libs/Address.sol



pragma solidity 0.6.12;


// File @openzeppelin/contracts/utils/Address.sol@v3.4.1

/**
 * @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
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 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://diligence.consensys.net/posts/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/v0.5.11/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");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (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 functionCall(target, data, "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");
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(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) {
        require(isContract(target), "Address: static call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(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) {
        require(isContract(target), "Address: delegate call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // 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

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}
// File: libs/IERC20.sol



pragma solidity 0.6.12;


// File @openzeppelin/contracts/token/ERC20/IERC20.sol@v3.4.1

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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 `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, 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 `sender` to `recipient` 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 sender, address recipient, uint256 amount) external returns (bool);

    /**
     * @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);
}
// File: libs/IStrategy.sol



pragma solidity 0.6.12;



interface IStrategy {
    function vault() external view returns (address);
    function want() external view returns (IERC20);
    function beforeDeposit() external;
    function deposit() external;
    function withdraw(uint256, uint256) external;
    function balanceOf() external view returns (uint256);
    function balanceOfWant() external view returns (uint256);
    function balanceOfPool() external view returns (uint256);
    function harvest() external;
    function retireStrat() external;
    function panic() external;
    function pause() external;
    function unpause() external;
    function paused() external view returns (bool);
    function unirouter() external view returns (address);
}
// File: libs/IVault.sol



pragma solidity 0.6.12;



interface IVault {
    function want() external view returns (IERC20);
    function deposit(uint256 _amount) external;
    function withdraw(uint256 _shares) external;
    function userInfo(address _user) external view returns (uint256 shares);

}
// File: libs/SafeERC20.sol



pragma solidity 0.6.12;





// File @openzeppelin/contracts/token/ERC20/SafeERC20.sol@v3.4.1


/**
 * @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 SafeMath for uint256;
    using Address for address;

    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    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'
        // solhint-disable-next-line max-line-length
        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));
    }

    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).add(value);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    /**
     * @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");
        if (returndata.length > 0) { // Return data is optional
            // solhint-disable-next-line max-line-length
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}
// File: StrategySushiLPV2.sol



pragma solidity 0.6.12;













contract StrategySushiLPV2 is StratManagerLP, FeeManagerLP {
    using SafeERC20 for IERC20;
    using SafeMath for uint256;

    struct UserInfo {
        // How many assets the user has provided.
        uint256 stake;
        // How many staked $Core user had at his last action
        uint256 autoCoreShares;
        // Core shares not entitled to the user
        uint256 rewardDebt;
        // Timestamp of last user deposit
        uint256 lastDepositedTime;
    }

    // Tokens used
    address public native;              //CELO
    address public output;              //SUSHI
    address public want;                //LP Pair Token e.g. cUSD/USDC
    address public coreToken;           //ORANGE
    IVault public coreVault;           //ORANGE Vault address

    // Third party contracts
    address public chef;                //Sushi MiniChef
    uint256 public poolId;              //index of sushi pool Id for above LP Token
    uint256 public lastHarvest;
    bool public harvestOnDeposit;
    // Routes
    address[] public outputToNativeRoute;
    address[] public nativeToCoreRoute;

    // Runtime data
    mapping(address => UserInfo) public userInfo; // Info of users

    uint256 public accSharesPerStakedToken; // Accumulated shares per core token, times 1e18.

    /**
     * @dev Event that is fired each time someone harvests the strat.
     */
    event StratHarvest(address indexed harvester, uint256 wantHarvested, uint256 tvl);
    event Deposit(uint256 tvl);
    event Withdraw(uint256 tvl);
    constructor(
        IVault _coreVault,
        address _want,
        uint256 _poolId,
        address _chef,
        address _vault,
        address _unirouter,
        address _keeper,
        address _strategist,
        address _beefyFeeRecipient,
        address[] memory _outputToNativeRoute,
        address[] memory _nativeToCoreRoute
    ) StratManagerLP(_keeper, _strategist, _unirouter, _vault, _beefyFeeRecipient) public {
        coreToken = address(IVault(_coreVault).want());
        coreVault = _coreVault;
        want = _want;
        poolId = _poolId;
        chef = _chef;
        require(_outputToNativeRoute.length >= 2);
        output = _outputToNativeRoute[0];
        native = _outputToNativeRoute[_outputToNativeRoute.length - 1];
        outputToNativeRoute = _outputToNativeRoute;
        // setup lp routing
        require(_nativeToCoreRoute[0] == native);
        require(_nativeToCoreRoute[_nativeToCoreRoute.length - 1] == coreToken);
        nativeToCoreRoute = _nativeToCoreRoute;
        _giveAllowances();
    }
    // puts the funds to work
    function deposit() public whenNotPaused {
        uint256 wantBal = IERC20(want).balanceOf(address(this));
        if (wantBal > 0) {
            IMiniChefV2(chef).deposit(poolId, wantBal, address(this));
            UserInfo storage user = userInfo[msg.sender];
            user.autoCoreShares = user.autoCoreShares.add(user.stake.mul(accSharesPerStakedToken).div(1e18).sub(user.rewardDebt));
            user.stake = user.stake.add(wantBal);
            user.rewardDebt = user.stake.mul(accSharesPerStakedToken).div(1e18);
            user.lastDepositedTime = block.timestamp;

            emit Deposit(balanceOf());
        }
    }
    function withdraw(uint256 _amount, uint256 sharePerc) external {
        require(msg.sender == vault, "!vault");
        UserInfo storage user = userInfo[msg.sender];

        uint256 wantBal = IERC20(want).balanceOf(address(this));
        if (wantBal < _amount) {
            IMiniChefV2(chef).withdraw(poolId, _amount.sub(wantBal), address(this));
            wantBal = IERC20(want).balanceOf(address(this));
        }
        if (wantBal > _amount) {
            wantBal = _amount;
        }

        user.autoCoreShares = user.autoCoreShares.add(user.stake.mul(accSharesPerStakedToken).div(1e18).sub(user.rewardDebt));
        user.stake = user.stake.sub(_amount);
        user.rewardDebt = user.stake.mul(accSharesPerStakedToken).div(1e18);

        // Withdraw rewards if user leaves
        if (user.stake == 0 && user.autoCoreShares > 0) {
            _claimRewards(user.autoCoreShares);
        } else if (sharePerc > 0) { // withdraw rewards based on share percentage
            _claimRewards(user.autoCoreShares.mul(sharePerc));
        }

        if (tx.origin == owner() || paused()) {
            IERC20(want).safeTransfer(vault, wantBal);
        } else {
            uint256 withdrawalFeeAmount = wantBal.mul(withdrawalFee).div(WITHDRAWAL_MAX);
            IERC20(want).safeTransfer(vault, wantBal.sub(withdrawalFeeAmount));
        }
        emit Withdraw(balanceOf());
    }

    function _claimRewards(uint256 _shares) private {
        UserInfo storage user = userInfo[msg.sender];
        user.autoCoreShares = user.autoCoreShares.sub(_shares);
        uint256 coreBalanceBefore = _coreBalance();
        IVault(coreVault).withdraw(_shares);
        uint256 withdrawAmount = _coreBalance().sub(coreBalanceBefore);
        _safeCoreTransfer(msg.sender, withdrawAmount);
    }

    // Safe Core transfer function, just in case if rounding error causes pool to not have enough
    function _safeCoreTransfer(address _to, uint256 _amount) private {
        uint256 balance = _coreBalance();

        if (_amount > balance) {
            IERC20(coreToken).transfer(_to, balance);
        } else {
            IERC20(coreToken).transfer(_to, _amount);
        }
    }

    function beforeDeposit() external override {
        if (harvestOnDeposit) {
            require(msg.sender == vault, "!vault");
            _harvest(tx.origin);
        }
    }

    function harvest() external virtual {
        _harvest(tx.origin);
    }
    function harvestWithCallFeeRecipient(address callFeeRecipient) external virtual {
        _harvest(callFeeRecipient);
    }
    function managerHarvest() external onlyManager {
        _harvest(tx.origin);
    }
    // compounds earnings and charges performance fee
    function _harvest(address callFeeRecipient) internal whenNotPaused {
        IMiniChefV2(chef).harvest(poolId, address(this));
        uint256 outputBal = IERC20(output).balanceOf(address(this));
        uint256 nativeBal = IERC20(native).balanceOf(address(this));
        if (outputBal > 0 || nativeBal > 0) {
            chargeFees(callFeeRecipient);
            uint256 wantHarvested = balanceOfWant();
            depositToCoreVault();
            lastHarvest = block.timestamp;
            emit StratHarvest(msg.sender, wantHarvested, balanceOf());
        }
    }
    // performance fees
    function chargeFees(address callFeeRecipient) internal {
        uint256 toNative = IERC20(output).balanceOf(address(this));
        IUniswapRouterETH(unirouter).swapExactTokensForTokens(toNative, 0, outputToNativeRoute, address(this), block.timestamp);
        uint256 feeBal = IERC20(native).balanceOf(address(this)).mul(45).div(1000);
        uint256 callFeeAmount = feeBal.mul(callFee).div(MAX_FEE);
        IERC20(native).safeTransfer(callFeeRecipient, callFeeAmount);
        uint256 beefyFeeAmount = feeBal.mul(beefyFee).div(MAX_FEE);
        IERC20(native).safeTransfer(beefyFeeRecipient, beefyFeeAmount);
        uint256 strategistFee = feeBal.mul(STRATEGIST_FEE).div(MAX_FEE);
        IERC20(native).safeTransfer(strategist, strategistFee);
    }
    // convert native to core token and deposit to vault
    function depositToCoreVault() internal {
        uint256 nativeToken = IERC20(native).balanceOf(address(this));
        if (coreToken != native) {
            IUniswapRouterETH(unirouter).swapExactTokensForTokens(nativeToken, 0, nativeToCoreRoute, address(this), block.timestamp);
        }
        uint256 coreBal = IERC20(coreToken).balanceOf(address(this));

        if (coreBal > 0) {
            uint256 previousShares = totalAutoCoreShares();
            IVault(coreVault).deposit(coreBal);
            uint256 currentShares = totalAutoCoreShares();
            accSharesPerStakedToken = accSharesPerStakedToken.add(
                currentShares.sub(previousShares).mul(1e18).div(totalStake())
            );
        }
    }

    function totalStake() public view returns (uint256) {
        (uint256 amount, ) =  IMiniChefV2(chef).userInfo(poolId, address(this));
        return amount;
    }

    function totalAutoCoreShares() public view returns (uint256) {
        uint256 shares = IVault(coreVault).userInfo(address(this));
        return shares;
    }

    function _coreBalance() private view returns (uint256) {
        return IERC20(coreToken).balanceOf(address(this));
    }

    // calculate the total underlaying 'want' held by the strat.
    function balanceOf() public view returns (uint256) {
        return balanceOfWant().add(balanceOfPool());
    }
    // it calculates how much 'want' this contract holds.
    function balanceOfWant() public view returns (uint256) {
        return IERC20(want).balanceOf(address(this));
    }
    // it calculates how much 'want' the strategy has working in the farm.
    function balanceOfPool() public view returns (uint256) {
        (uint256 _amount, ) = IMiniChefV2(chef).userInfo(poolId, address(this));
        return _amount;
    }
    // called as part of strat migration. Sends all the available funds back to the vault.
    function retireStrat() external {
        require(msg.sender == vault, "!vault");
        IMiniChefV2(chef).emergencyWithdraw(poolId, address(this));
        uint256 wantBal = IERC20(want).balanceOf(address(this));
        IERC20(want).transfer(vault, wantBal);
    }
    // returns rewards unharvested
    function rewardsAvailable() public view returns (uint256) {
        return IMiniChefV2(chef).pendingSushi(poolId, address(this));
    }
    // native reward amount for calling harvest
    function callReward() public view returns (uint256) {
        uint256 pendingReward;
        address rewarder = IMiniChefV2(chef).rewarder(poolId);
        if (rewarder != address(0)) {
            pendingReward = IRewarder(rewarder).pendingToken(poolId, address(this));
        }
        uint256 outputBal = rewardsAvailable();
        uint256 nativeOut;
        if (outputBal > 0) {
            try IUniswapRouterETH(unirouter).getAmountsOut(outputBal, outputToNativeRoute)
                returns (uint256[] memory amountOut)
            {
                nativeOut = amountOut[amountOut.length -1];
            }
            catch {}
        }
       uint256 totNative = nativeOut.add(pendingReward);
        return totNative.mul(45).div(1000).mul(callFee).div(MAX_FEE);
    }
    function setHarvestOnDeposit(bool _harvestOnDeposit) external onlyManager {
        harvestOnDeposit = _harvestOnDeposit;
        if (harvestOnDeposit) {
            setWithdrawalFee(0);
        } else {
            setWithdrawalFee(10);
        }
    }
    // pauses deposits and withdraws all funds from third party systems.
    function panic() public onlyManager {
        pause();
        IMiniChefV2(chef).emergencyWithdraw(poolId, address(this));
    }
    function pause() public onlyManager {
        _pause();
        _removeAllowances();
    }
    function unpause() external onlyManager {
        _unpause();
        _giveAllowances();
        deposit();
    }
    function _giveAllowances() internal {
        IERC20(want).safeApprove(chef, type(uint256).max);
        IERC20(native).safeApprove(unirouter, type(uint256).max);
        IERC20(output).safeApprove(unirouter, type(uint256).max);
        IERC20(coreToken).safeApprove(unirouter, 0);
        IERC20(coreToken).safeApprove(unirouter, type(uint256).max);
    }
    function _removeAllowances() internal {
        IERC20(want).safeApprove(chef, 0);
        IERC20(native).safeApprove(unirouter, 0);
        IERC20(output).safeApprove(unirouter, 0);
        IERC20(coreToken).safeApprove(unirouter, 0);
    }
}