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// SPDX-License-Identifier: J-J-J-JENGA!!!
pragma solidity 0.7.4;
pragma experimental ABIEncoderV2;

import "./openzeppelin/TokensRecoverable.sol";
import "./openzeppelin/Owned.sol";
import "./interfaces/IPi.sol";

import "./interfaces/IPiTransferGate.sol";
import "./interfaces/IUniswapV2Pair.sol";
import "./interfaces/IUniswapV2Factory.sol";
import "./interfaces/IUniswapV2Router02.sol";
import "./openzeppelin/ReentrancyGuard.sol";

/* Pi:
A transfer gate (GatedERC20) for use with Pi tokens

It:
    Allows customization of tax and burn rates
    Allows transfer to/from approved Uniswap pools
    Disallows transfer to/from non-approved Uniswap pools
    (doesn't interfere with other crappy AMMs)
    Allows transfer to/from anywhere else
    Allows for free transfers if permission granted
    Allows for unrestricted transfers if permission granted
    Provides a safe and tax-free liquidity adding function
*/

struct PiTransferGateParameters
{
    address dev;
    uint16 stakeRate; // 100000 = 100%
    uint16 burnRate; // 100000 = 100%
    uint16 devRate;  // 100000 = 100%
    address stake;
}

contract PiTransferGate is Owned, TokensRecoverable, IPiTransferGate, ReentrancyGuard
{   
    using Address for address;
    using SafeERC20 for IERC20;
    using SafeMath for uint256;

    PiTransferGateParameters public parameters;
    IPi immutable Pi ;
    mapping (address => AddressState) public addressStates;
    IERC20[] public allowedPoolTokens;
    
    bool public unrestricted;
    mapping (address => bool) public unrestrictedControllers;
    mapping (address => bool) public freeParticipant;

    mapping (address => bool) public allowedFactoryAddress;

    mapping (address => uint256) public liquiditySupply;
    address public mustUpdate;    

    uint256 slippage = 5000; //5000 for 5%
    event SlippageSet(uint slippage);
    event ParametersSet(address dev, address stake, uint16 stakeRate, uint16 burnRate, uint16 devRate);
    event AddressStateSet(AddressState state);

    constructor(address _Pi) {
        Pi=IPi(_Pi);
        allowedFactoryAddress[0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f]=true; // uniswap factory address allowed
        PiTransferGateParameters memory _parameters;
        _parameters.dev = 0x16352774BF9287E0324E362897c1380ABC8B2b35;
        _parameters.stakeRate = 2000;
        _parameters.burnRate = 500;
        _parameters.devRate = 2000;
        _parameters.stake = 0xb0bBfAF6492B70359a001Fd30E673A4fcE875c6C;
        parameters = _parameters;
    }

    function addFactory(address factoryAddress) external ownerOnly{
        allowedFactoryAddress[factoryAddress]=true;
    }

    function removeFactory(address factoryAddress) external ownerOnly{
        allowedFactoryAddress[factoryAddress]=false;
    }

    // 3 decimal =>1000 = 1% => 
    function setSlippage(uint256 _slippage) external ownerOnly{
        require(_slippage<100000,"cannot be more than 100%");
        slippage=_slippage;
        emit SlippageSet(slippage);        
    }

    function allowedPoolTokensCount() public view override returns (uint256) { return allowedPoolTokens.length; }

    function setUnrestrictedController(address unrestrictedController, bool allow) public override ownerOnly(){
        unrestrictedControllers[unrestrictedController] = allow;
    }


    function setFreeParticipant(address participant, bool free) public override ownerOnly()
    {
        freeParticipant[participant] = free;
    }

    function setUnrestricted(bool _unrestricted) public override
    {
        require (unrestrictedControllers[msg.sender], "Not an unrestricted controller");
        unrestricted = _unrestricted;
    }

    function setParameters(address _dev, address _stake, uint16 _stakeRate, uint16 _burnRate, uint16 _devRate) public override ownerOnly()
    {
        require (_stakeRate <= 100000 && _burnRate <= 100000 && _devRate <= 100000 && _stakeRate + _burnRate + _devRate <= 100000, "> 100%");
        require (_dev != address(0) && _stake != address(0));
        // require (_stakeRate <= 500 && _burnRate <= 500 && _devRate <= 10, "Sanity");
        
        PiTransferGateParameters memory _parameters;
        _parameters.dev = _dev;
        _parameters.stakeRate = _stakeRate;
        _parameters.burnRate = _burnRate;
        _parameters.devRate = _devRate;
        _parameters.stake = _stake;
        parameters = _parameters;

        emit ParametersSet(_dev, _stake, _stakeRate, _burnRate, _devRate);
    }

    function allowPool(IUniswapV2Factory _uniswapV2Factory, IERC20 token) public override ownerOnly()
    {
        require(allowedFactoryAddress[address(_uniswapV2Factory)],"This uniswapV2Factory not allowed");
        address pool = _uniswapV2Factory.getPair(address(Pi), address(token));
        if (pool == address(0)) {
            pool = _uniswapV2Factory.createPair(address(Pi), address(token));
        }
        AddressState state = addressStates[pool];
        require (state != AddressState.AllowedPool, "Already allowed");
        addressStates[pool] = AddressState.AllowedPool;
        allowedPoolTokens.push(token);
        liquiditySupply[pool] = IERC20(pool).totalSupply();
    }


    function safeAddLiquidity(IUniswapV2Router02 _uniswapRouter02, IERC20 token, uint256 tokenAmount, uint256 PiAmount) public nonReentrant override
        returns (uint256 PiUsed, uint256 tokenUsed, uint256 liquidity)
    {
        require(allowedFactoryAddress[address(_uniswapRouter02.factory())],"This _uniswapV2Factory not allowed");

        address pool = IUniswapV2Factory(_uniswapRouter02.factory()).getPair(address(Pi), address(token));
        require (pool != address(0) && addressStates[pool] == AddressState.AllowedPool, "Pool not approved");
        unrestricted = true;

        uint256 tokenBalance = token.balanceOf(address(this));
        uint256 PiBalance = Pi.balanceOf(address(this));

        token.safeTransferFrom(msg.sender, address(this), tokenAmount);
        Pi.transferFrom(msg.sender, address(this), PiAmount);
        Pi.approve(address(_uniswapRouter02), PiAmount);
        token.safeApprove(address(_uniswapRouter02), tokenAmount);
        // actual received token amount
        
        uint256 tokenAmountReceived= token.balanceOf(address(this)).sub(tokenBalance);
        uint256 PiAmountReceived=Pi.balanceOf(address(this)).sub(PiBalance);

        // uint256 tokenMinAmount = estimateBuy(_uniswapRouter02, token,tokenAmount).mul((100000-slippageBuy)/1000)/100;
        // uint256 PiMinAmount = estimateSell(_uniswapRouter02, token,PiAmount).mul((100000-slippageSell)/1000)/100;

        (PiUsed, tokenUsed ,liquidity ) = 
        _uniswapRouter02.addLiquidity(
            address(Pi), 
            address(token), 
            PiAmountReceived, 
            tokenAmountReceived,
            PiAmountReceived.mul(100000-slippage).div(100000), 
            tokenAmountReceived.mul(100000-slippage).div(100000),
            msg.sender, 
            block.timestamp);

        liquiditySupply[pool] = IERC20(pool).totalSupply();
        if (mustUpdate == pool) {
            mustUpdate = address(0);
        }

        if (PiUsed < PiAmount) {
            Pi.transfer(msg.sender, PiAmount.sub(PiUsed));
        }
        tokenBalance = token.balanceOf(address(this)).sub(tokenBalance); // we do it this way in case there's a burn
        if (tokenBalance > 0) {
            token.safeTransfer(msg.sender, tokenBalance);
        }
        
        unrestricted = false;
    }


    function handleTransfer(address, address from, address to, uint256 amount) external override
        returns (uint256 burn, TransferGateTarget[] memory targets){

        address mustUpdateAddress = mustUpdate;
        if (mustUpdateAddress != address(0)) {
            mustUpdate = address(0);
            liquiditySupply[mustUpdateAddress] = IERC20(mustUpdateAddress).totalSupply();
        }
        AddressState fromState = addressStates[from];
        AddressState toState = addressStates[to];
        if (fromState != AddressState.AllowedPool && toState != AddressState.AllowedPool) {
            if (fromState == AddressState.Unknown) { fromState = detectState(from); }
            if (toState == AddressState.Unknown) { toState = detectState(to); }
            require (unrestricted || (fromState != AddressState.DisallowedPool && toState != AddressState.DisallowedPool), "Pool not approved");
        }
        if (toState == AddressState.AllowedPool) {
            mustUpdate = to;
        }
        if (fromState == AddressState.AllowedPool) {
            if (unrestricted) {
                liquiditySupply[from] = IERC20(from).totalSupply();
            }
            require (IERC20(from).totalSupply() >= liquiditySupply[from], "Cannot remove liquidity");            
        }
        if (unrestricted || freeParticipant[from] || freeParticipant[to]) {
            return (0, new TransferGateTarget[](0));
        }
        PiTransferGateParameters memory params = parameters;
        // "amount" will never be > totalSupply which is capped at 10k, so these multiplications will never overflow
        burn = amount.mul(params.burnRate).div(100000);
        targets = new TransferGateTarget[]((params.devRate > 0 ? 1 : 0) + (params.stakeRate > 0 ? 1 : 0));
        uint256 index = 0;
        if (params.stakeRate > 0) {
            targets[index].destination = params.stake;
            targets[index++].amount = amount.mul(params.stakeRate).div(100000);
        }
        if (params.devRate > 0) {
            targets[index].destination = params.dev;
            targets[index].amount = amount.mul(params.devRate).div(100000);
        }
    }

    function setAddressState(address a, AddressState state) public ownerOnly()
    {
        addressStates[a] = state;
        emit AddressStateSet(state);
    }

    function detectState(address a) public returns (AddressState state) 
    {
        state = AddressState.NotPool;
        if (a.isContract()) {
            try this.throwAddressState(a)
            {
                assert(false);
            }
            catch Error(string memory result) {
                if (bytes(result).length == 1) {
                    state = AddressState.NotPool;
                }
                if (bytes(result).length == 2) {
                    state = AddressState.DisallowedPool;
                }
            }
            catch {
            }
        }
        addressStates[a] = state;
        return state;
    }
    
    // Not intended for external consumption
    // Always throws
    // We want to call functions to probe for things, but don't want to open ourselves up to
    // possible state-changes
    // So we return a value by reverting with a message
    function throwAddressState(address a) external view
    {
        try IUniswapV2Pair(a).factory() returns (address factory)
        {
            // don't care if it's some crappy alt-amm
            if (allowedFactoryAddress[factory]) {
                // these checks for token0/token1 are just for additional
                // certainty that we're interacting with a uniswap pair
                try IUniswapV2Pair(a).token0() returns (address token0)
                {
                    if (token0 == address(Pi)) {
                        revert("22");
                    }
                    try IUniswapV2Pair(a).token1() returns (address token1)
                    {
                        if (token1 == address(Pi)) {
                            revert("22");
                        }                        
                    }
                    catch { 
                    }                    
                }
                catch { 
                }
            }
        }
        catch {             
        }
        revert("1");
    }
}

// SPDX-License-Identifier: J-J-J-JENGA!!!
pragma solidity ^0.7.4;

/* ROOTKIT:
Allows recovery of unexpected tokens (airdrops, etc)
Inheriters can customize logic by overriding canRecoverTokens
*/

import "../interfaces/IERC20.sol";
import "../libraries/SafeERC20.sol";
import "./Owned.sol";
import "../interfaces/ITokensRecoverable.sol";

abstract contract TokensRecoverable is Owned, ITokensRecoverable
{
    using SafeERC20 for IERC20;

    function recoverTokens(IERC20 token) public override ownerOnly() 
    {
        require (canRecoverTokens(token));
        
        token.safeTransfer(msg.sender, token.balanceOf(address(this)));
    }

    function recoverETH(uint256 amount) public override ownerOnly() 
    {        
        msg.sender.transfer(amount);
    }

    function canRecoverTokens(IERC20 token) internal virtual view returns (bool) 
    { 
        return address(token) != address(this); 
    }
}

// SPDX-License-Identifier: J-J-J-JENGA!!!
pragma solidity ^0.7.4;

/* ROOTKIT:
Provides ownerOnly() modifier
Allows for ownership transfer but requires the new
owner to claim (accept) ownership
Safer because no accidental transfers or renouncing
*/

import "../interfaces/IOwned.sol";

abstract contract Owned is IOwned
{
    address public override owner = msg.sender;
    address internal pendingOwner;

    modifier ownerOnly()
    {
        require (msg.sender == owner, "Owner only");
        _;
    }

    function transferOwnership(address newOwner) public override ownerOnly()
    {
        pendingOwner = newOwner;
    }

    function claimOwnership() public override
    {
        require (pendingOwner == msg.sender);
        pendingOwner = address(0);
        emit OwnershipTransferred(owner, msg.sender);
        owner = msg.sender;
    }
}

// SPDX-License-Identifier: J-J-J-JENGA!!!
pragma solidity ^0.7.4;
import "./IGatedERC20.sol";

interface IPi is IGatedERC20
{
    
    function FEE() external view returns (uint256);
    function FEE_ADDRESS() external view returns (address);
    function isIgnored(address _ignoredAddress) external view returns (bool);
    
}

// SPDX-License-Identifier: J-J-J-JENGA!!!
pragma solidity ^0.7.4;
pragma experimental ABIEncoderV2;

import "./IOwned.sol";
import "./ITokensRecoverable.sol";
import "./IUniswapV2Router02.sol";
import "./IUniswapV2Factory.sol";


enum AddressState
{
    Unknown,
    NotPool,
    DisallowedPool,
    AllowedPool
} 
struct TransferGateTarget
{
    address destination;
    uint256 amount;
}

interface IPiTransferGate is IOwned, ITokensRecoverable
{   


    function allowedPoolTokensCount() external view returns (uint256);
    function setUnrestrictedController(address unrestrictedController, bool allow) external;

    function setFreeParticipant(address participant, bool free) external;

    function setUnrestricted(bool _unrestricted) external;

    function setParameters(address _dev, address _stake, uint16 _stakeRate, uint16 _burnRate, uint16 _devRate) external;
    function allowPool(IUniswapV2Factory _uniswapV2Factory, IERC20 token) external;

    function safeAddLiquidity(IUniswapV2Router02 _uniswapRouter02, IERC20 token, uint256 tokenAmount, uint256 PiAmount//, uint256 minTokenAmount, uint256 minPiAmount
// ,uint256 deadline //stack deep issue coming so had to use fix values
    ) external returns (uint256 PiUsed, uint256 tokenUsed, uint256 liquidity);

    function handleTransfer(address msgSender, address from, address to, uint256 amount) external
    returns (uint256 burn, TransferGateTarget[] memory targets);

  
}

// SPDX-License-Identifier: J-J-J-JENGA!!!
pragma solidity ^0.7.4;

interface IUniswapV2Pair {
    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint value);

    function name() external pure returns (string memory);
    function symbol() external pure returns (string memory);
    function decimals() external pure returns (uint8);
    function totalSupply() external view returns (uint);
    function balanceOf(address owner) external view returns (uint);
    function allowance(address owner, address spender) external view returns (uint);

    function approve(address spender, uint value) external returns (bool);
    function transfer(address to, uint value) external returns (bool);
    function transferFrom(address from, address to, uint value) external returns (bool);

    function DOMAIN_SEPARATOR() external view returns (bytes32);
    function PERMIT_TYPEHASH() external pure returns (bytes32);
    function nonces(address owner) external view returns (uint);

    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;

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

    function MINIMUM_LIQUIDITY() external pure returns (uint);
    function factory() external view returns (address);
    function token0() external view returns (address);
    function token1() external view returns (address);
    function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
    function price0CumulativeLast() external view returns (uint);
    function price1CumulativeLast() external view returns (uint);
    function kLast() external view returns (uint);

    function mint(address to) external returns (uint liquidity);
    function burn(address to) external returns (uint amount0, uint amount1);
    function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
    function skim(address to) external;
    function sync() external;

    function initialize(address, address) external;
}

// SPDX-License-Identifier: J-J-J-JENGA!!!
pragma solidity ^0.7.4;

interface IUniswapV2Factory {
    event PairCreated(address indexed token0, address indexed token1, address pair, uint);

    function feeTo() external view returns (address);
    function feeToSetter() external view returns (address);

    function getPair(address tokenA, address tokenB) external view returns (address pair);
    function allPairs(uint) external view returns (address pair);
    function allPairsLength() external view returns (uint);

    function createPair(address tokenA, address tokenB) external returns (address pair);

    function setFeeTo(address) external;
    function setFeeToSetter(address) external;
}

// SPDX-License-Identifier: J-J-J-JENGA!!!
pragma solidity ^0.7.4;

import './IUniswapV2Router01.sol';

interface IUniswapV2Router02 is IUniswapV2Router01 {
    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;
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

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

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

    uint256 private _status;

    constructor () internal {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and make it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

// SPDX-License-Identifier: J-J-J-JENGA!!!
pragma solidity ^0.7.4;

interface IERC20 
{
    event Transfer(address indexed _from, address indexed _to, uint256 _value);
    event Approval(address indexed _owner, address indexed _spender, uint256 _value);

    function totalSupply() external view returns (uint256);
    function balanceOf(address _account) external view returns (uint256);
    function transfer(address _recipient, uint256 _amount) external returns (bool);
    function allowance(address _owner, address _spender) external view returns (uint256);
    function approve(address _spender, uint256 _amount) external returns (bool);
    function transferFrom(address _sender, address _recipient, uint256 _amount) external returns (bool);

    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: J-J-J-JENGA!!!
pragma solidity ^0.7.4;

/* ROOTKIT:
Modified to remove some junk
Also modified to remove silly restrictions (traps!) within safeApprove
*/

import "../interfaces/IERC20.sol";
import "./SafeMath.sol";
import "./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 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 {        
        _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");
        }
    }
}

// SPDX-License-Identifier: J-J-J-JENGA!!!
pragma solidity ^0.7.4;

import "./IERC20.sol";

interface ITokensRecoverable
{
    function recoverTokens(IERC20 token) external;
    function recoverETH(uint256 amount) external; 
}

// SPDX-License-Identifier: J-J-J-JENGA!!!
pragma solidity ^0.7.4;

/* ROOTKIT:
O wherefore art thou 8 point O
*/

library SafeMath 
{
    function add(uint256 a, uint256 b) internal pure returns (uint256) 
    {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) 
    {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) 
    {
        require(b <= a, errorMessage);
        uint256 c = a - b;
        return c;
    }

    function mul(uint256 a, uint256 b) internal pure returns (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 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }
    
    function div(uint256 a, uint256 b) internal pure returns (uint256) 
    {
        return div(a, b, "SafeMath: division by zero");
    }

    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) 
    {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        return c;
    }

    function mod(uint256 a, uint256 b) internal pure returns (uint256) 
    {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) 
    {
        require(b != 0, errorMessage);
        return a % b;
    }
}

// SPDX-License-Identifier: J-J-J-JENGA!!!
pragma solidity ^0.7.4;

/**
 * @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 v3.3._
     */
    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 v3.3._
     */
    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);
            }
        }
    }
}

// SPDX-License-Identifier: J-J-J-JENGA!!!
pragma solidity ^0.7.4;

interface IOwned
{
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    function owner() external view returns (address);

    function transferOwnership(address newOwner) external;
    function claimOwnership() external;
}

// SPDX-License-Identifier: J-J-J-JENGA!!!
pragma solidity ^0.7.4;

import "./IERC20.sol";
import "./IPiTransferGate.sol";

interface IGatedERC20 is IERC20
{
    function transferGate() external view returns (IPiTransferGate);

    function setTransferGate(IPiTransferGate _transferGate) external;
}

// SPDX-License-Identifier: J-J-J-JENGA!!!
pragma solidity ^0.7.4;

interface IUniswapV2Router01 {
    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);
}

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

• No Contract Security Audit Submitted- Submit Audit Here

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AddressState","name":"state","type":"uint8"}],"name":"AddressStateSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"dev","type":"address"},{"indexed":false,"internalType":"address","name":"stake","type":"address"},{"indexed":false,"internalType":"uint16","name":"stakeRate","type":"uint16"},{"indexed":false,"internalType":"uint16","name":"burnRate","type":"uint16"},{"indexed":false,"internalType":"uint16","name":"devRate","type":"uint16"}],"name":"ParametersSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"slippage","type":"uint256"}],"name":"SlippageSet","type":"event"},{"inputs":[{"internalType":"address","name":"factoryAddress","type":"address"}],"name":"addFactory","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"addressStates","outputs":[{"internalType":"enum AddressState","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IUniswapV2Factory","name":"_uniswapV2Factory","type":"address"},{"internalType":"contract IERC20","name":"token","type":"address"}],"name":"allowPool","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"allowedFactoryAddress","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"allowedPoolTokens","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"allowedPoolTokensCount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"claimOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"a","type":"address"}],"name":"detectState","outputs":[{"internalType":"enum AddressState","name":"state","type":"uint8"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"freeParticipant","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"handleTransfer","outputs":[{"internalType":"uint256","name":"burn","type":"uint256"},{"components":[{"internalType":"address","name":"destination","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"internalType":"struct TransferGateTarget[]","name":"targets","type":"tuple[]"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"liquiditySupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"mustUpdate","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"parameters","outputs":[{"internalType":"address","name":"dev","type":"address"},{"internalType":"uint16","name":"stakeRate","type":"uint16"},{"internalType":"uint16","name":"burnRate","type":"uint16"},{"internalType":"uint16","name":"devRate","type":"uint16"},{"internalType":"address","name":"stake","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"recoverETH","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"token","type":"address"}],"name":"recoverTokens","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"factoryAddress","type":"address"}],"name":"removeFactory","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IUniswapV2Router02","name":"_uniswapRouter02","type":"address"},{"internalType":"contract IERC20","name":"token","type":"address"},{"internalType":"uint256","name":"tokenAmount","type":"uint256"},{"internalType":"uint256","name":"PiAmount","type":"uint256"}],"name":"safeAddLiquidity","outputs":[{"internalType":"uint256","name":"PiUsed","type":"uint256"},{"internalType":"uint256","name":"tokenUsed","type":"uint256"},{"internalType":"uint256","name":"liquidity","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"a","type":"address"},{"internalType":"enum AddressState","name":"state","type":"uint8"}],"name":"setAddressState","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"participant","type":"address"},{"internalType":"bool","name":"free","type":"bool"}],"name":"setFreeParticipant","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_dev","type":"address"},{"internalType":"address","name":"_stake","type":"address"},{"internalType":"uint16","name":"_stakeRate","type":"uint16"},{"internalType":"uint16","name":"_burnRate","type":"uint16"},{"internalType":"uint16","name":"_devRate","type":"uint16"}],"name":"setParameters","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_slippage","type":"uint256"}],"name":"setSlippage","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_unrestricted","type":"bool"}],"name":"setUnrestricted","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"unrestrictedController","type":"address"},{"internalType":"bool","name":"allow","type":"bool"}],"name":"setUnrestrictedController","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"a","type":"address"}],"name":"throwAddressState","outputs":[],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unrestricted","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"unrestrictedControllers","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"}]

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00000000000000000000000037613d64258c0fe09d5e53eecb091da5b8fa8707

-----Decoded View---------------
Arg [0] : _Pi (address): 0x37613D64258c0FE09d5E53EeCb091DA5b8fA8707

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 00000000000000000000000037613d64258c0fe09d5e53eecb091da5b8fa8707