pragma solidity 0.6.3;



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;
    }
}

interface IERC20 {
 
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    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);

 
    event Transfer(address indexed from, address indexed to, uint256 value);

    event Approval(address indexed owner, address indexed spender, uint256 value);
}

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;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        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;
    }
}




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 returns (address) {
        return _owner;
    }

    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }


    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}









library Address {

    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;
    }


    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");
    }


    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }


    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }


    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");
    }

    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);
    }


    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    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);
    }

    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }


    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);
            }
        }
    }
}



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));
    }


    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));
    }


    function _callOptionalReturn(IERC20 token, bytes memory data) private {

        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");
        }
    }
}


contract MasterChef is Ownable {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;

    // Info of each user.
    struct UserInfo {
		uint256 pid;
        uint256 amount;     // How many LP tokens the user has provided.
		uint256 reward;
        uint256 rewardPaid; 
		uint256 userRewardPerTokenPaid;
    }
	// Info of each user that stakes LP tokens.
    mapping (uint256 => mapping (address => UserInfo)) public userInfo;
	

	
    // Info of each pool.
    struct PoolInfo {
        IERC20 lpToken;           // Address of LP token contract.
        uint256 allocPoint;       // How many allocation points assigned to this pool. Pizzas to distribute per block.
        uint256 lastRewardTime;  // Last block number that Pizzas distribution occurs.
        uint256 accPizzaPerShare; // Accumulated Pizzas per share, times 1e18. See below.
		uint256 totalPool;
    }
    // Info of each pool.
    PoolInfo[] public poolInfo;
	



    
	struct User {
        uint id; 
        address referrer; 

		uint256[] referAmount;

		uint256 referReward;
		
		uint256[] referCount;
	
		uint256 referRewardPerTokenPaid;

    }	
	mapping(address => User) public users;
	

	uint public lastUserId = 2;
	mapping(uint256 => address) public regisUser;



	
	
	

	bool initialized = false;

    //uint256 public initreward = 1250*1e18;

    uint256 public starttime = 1599829200;

    uint256 public periodFinish = 0;

    uint256 public rewardRate = 0;

    uint256 public totalMinted = 0;





	



	//The Pizza TOKEN!
	//  IERC20 public pizza = IERC20(0xb02899b895ad5dd975784adde42c92362503a025);
    IERC20 public pizza ;



	address public defaultReferAddr = address(0x49e7EC51dC974980ad87D1e509357E0A27a0A68E);
	
	address public projectAddress = address(0xAC112a46216759fbd0a3a3ADEc245e37c9748E18);
	

    // Total allocation poitns. Must be the sum of all allocation points in all pools.
    uint256 public totalAllocPoint = 0;
    // Bonus muliplier for early pizza makers.
    uint256 public constant BONUS_MULTIPLIER = 1;




    event RewardPaid(address indexed user, uint256 reward);
    event Deposit(address indexed user, uint256 indexed pid, uint256 amount);
    event Withdraw(address indexed user, uint256 indexed pid, uint256 amount);
    event Registration(address indexed user, address indexed referrer, uint indexed userId, uint referrerId);

 //constructor
   // function initContract 
	 constructor (IERC20 _pizza,uint256 _rewardRate,uint256 _starttime,uint256 _periodFinish,address _defaultReferAddr,address _projectAddress) public onlyOwner{	
		require(initialized == false,"has initialized");
        pizza = _pizza;
		rewardRate = _rewardRate;
		starttime = _starttime;
		periodFinish = _periodFinish;
		defaultReferAddr =  _defaultReferAddr;
		projectAddress = _projectAddress;
	
		User memory user = User({
            id: 1,
            referrer: address(0),
            referAmount:new uint256[](2),
			referReward:0,
			referCount:new uint256[](2),
			referRewardPerTokenPaid:0		
        });		
		users[defaultReferAddr] = user;	
		
		regisUser[1] = 	defaultReferAddr;
		initialized = true;	
    }

    function poolLength() external view returns (uint256) {
        return poolInfo.length;
    }
	

    function isUserExists(address user) public view returns (bool) {
		return (users[user].id != 0);
    }
	

	
	function registrationExt(address referrerAddress) external {
        registration(msg.sender, referrerAddress);
    }

    function registration(address userAddress, address referrerAddress) private {
       //require(msg.value == 0.05 ether, "registration cost 0.05");
        require(!isUserExists(userAddress), "user exists");
        require(isUserExists(referrerAddress), "referrer not exists");
        
       // uint32 size;
        //assembly {
        //    size := extcodesize(userAddress)
       // }
		//require(size == 0, "cannot be a contract");
		require(!Address.isContract(userAddress), "cannot be a contract");
        
 
        User memory user = User({
            id: lastUserId,
            referrer: referrerAddress,
			referAmount:new uint256[](2),
			referReward:0,
			referCount:new uint256[](2),
			referRewardPerTokenPaid:0		
        });
		

		
		regisUser[lastUserId] = userAddress;
        
        users[userAddress] = user;
		
		users[referrerAddress].referCount[0] = users[referrerAddress].referCount[0].add(1);
		
		address _refer = users[referrerAddress].referrer;
		if(_refer != address(0)){
			users[_refer].referCount[1] = users[_refer].referCount[1].add(1);
		}
		
        lastUserId++;
        
        emit  Registration(userAddress, referrerAddress, users[userAddress].id, users[referrerAddress].id);
    }
	



    // Add a new lp to the pool. Can only be called by the owner.
    // XXX DO NOT add the same LP token more than once. Rewards will be messed up if you do.
    function addLp(uint256 _allocPoint, IERC20 _lpToken) public onlyOwner {   
        uint256 lastRewardTime = block.timestamp > starttime ? block.timestamp : starttime;
        totalAllocPoint = totalAllocPoint.add(_allocPoint);
        poolInfo.push(PoolInfo({
            lpToken: _lpToken,
            allocPoint: _allocPoint,
            lastRewardTime: lastRewardTime,
            accPizzaPerShare: 0,
			totalPool:0
        }));		
    }
	
	


    // Update the given pool's Pizza allocation point. Can only be called by the owner.
    function set(uint256 _pid, uint256 _allocPoint) public onlyOwner {

        totalAllocPoint = totalAllocPoint.sub(poolInfo[_pid].allocPoint).add(_allocPoint);
        poolInfo[_pid].allocPoint = _allocPoint;
    }
	
	function setTotalAllocPoint(uint256 _totalAllocPoint) public onlyOwner{
		totalAllocPoint = _totalAllocPoint;
	}
	
	function setRewardRate(uint256 _rewardRate) public onlyOwner {
		rewardRate = _rewardRate;	
	} 

	
  

    // Return reward multiplier over the given _from to _to block.
    function getMultiplier(uint256 _from, uint256 _to) public view returns (uint256) {
        if (_to <= periodFinish) {
            return _to.sub(_from).mul(BONUS_MULTIPLIER);
        } else if (_from >= periodFinish) {
            return _to.sub(_from);
        } else {
            return periodFinish.sub(_from).mul(BONUS_MULTIPLIER).add(
                _to.sub(periodFinish)
            );
        }
    }

	function getRewardRate() public view returns(uint256){
		
		if(totalMinted < 6000*1e18){
			return rewardRate;
		}else if(totalMinted >= 6000*1e18   && totalMinted <= 8000 * 1e18){
			return rewardRate.mul(50).div(100);
		}else if(totalMinted >8000*1e18 && totalMinted <= 9000 * 1e18){
			return   rewardRate.mul(50).div(100);
		}else{
			return 0;
		}
	}

    function pendingPizza(uint256 _pid, address _user) public view returns (uint256) {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][_user];
        uint256 accPizzaPerShare = pool.accPizzaPerShare;
        uint256 lpSupply = pool.totalPool;
		uint256 result = user.reward;
        if (block.timestamp > pool.lastRewardTime && lpSupply != 0) {
            uint256 multiplier =  getMultiplier(pool.lastRewardTime, block.timestamp);
            uint256 pizzaReward = multiplier.mul(getRewardRate()).mul(pool.allocPoint).div(totalAllocPoint);
            accPizzaPerShare = pool.accPizzaPerShare.add(pizzaReward.mul(1e18).div(lpSupply));
        }

		result = result.add(user.amount.mul((accPizzaPerShare).sub(user.userRewardPerTokenPaid)).div(1e18));
	
        
		return result;
    }
	

	function pendingAllPizza(address _user) public view returns (uint256) {
		uint256  result = 0;
		for(uint256 i = 0;i< poolInfo.length;i++ ){
			result = result.add(pendingPizza(i,_user));
		}
        return result;
    }
	

	function allPizzaAmount(address _user) public view returns (uint256) {
		uint256 result = 0;
		for(uint256 i = 0;i< poolInfo.length;i++ ){
			UserInfo storage user = userInfo[i][_user];
			result = result.add(pendingPizza(i,_user).add(user.rewardPaid));
		}
        return result;
    }
	

	function getAllDeposit(address _user) public view returns (uint256) {
		uint256 result = 0;
		for(uint256 i = 0;i< poolInfo.length;i++ ){
			UserInfo storage user = userInfo[i][_user];		
			result = result.add(user.amount);
		}
        return result;
    }



	function getReferCount(address userAddress) public view returns(uint256[] memory){
	
		if(isUserExists(userAddress)){
			return	users[userAddress].referCount;
		}
		return new uint256[](2);
	}
	


	function getReferAmount(address _user,uint256 _index) public view returns(uint256){
		if(isUserExists(_user)){
			return	users[_user].referAmount[_index];
		}
		return 0;
	}
	
    // Update reward variables of the given pool to be up-to-date.
    function updatePool(uint256 _pid,address _user) internal {
        PoolInfo storage pool = poolInfo[_pid];
        if (block.timestamp <= pool.lastRewardTime) {
            return;
        }
        uint256 lpSupply = pool.totalPool;
        if (lpSupply == 0) {
            pool.lastRewardTime = block.timestamp;
            return;
        }
		UserInfo storage user = userInfo[_pid][_user];
		
        uint256 multiplier = getMultiplier(pool.lastRewardTime, block.timestamp);
        uint256 pizzaReward = multiplier.mul(getRewardRate()).mul(pool.allocPoint).div(totalAllocPoint);
        totalMinted = totalMinted.add(pizzaReward);


		//pizza.mint(address(this), pizzaReward);
        pool.accPizzaPerShare = pool.accPizzaPerShare.add(pizzaReward.mul(1e18).div(lpSupply));
		
		user.reward = user.amount.mul((pool.accPizzaPerShare).sub(user.userRewardPerTokenPaid)).div(1e18).add(user.reward);
		
		
		user.userRewardPerTokenPaid = pool.accPizzaPerShare;
        pool.lastRewardTime = block.timestamp;
    }


    // Deposit LP tokens to MasterChef for pizza allocation.
    function deposit(uint256 _pid, uint256 _amount) public checkStart {

		require(isUserExists(msg.sender), "user don't exists");		
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        updatePool(_pid,msg.sender);	
		
        if(_amount > 0) {
            pool.lpToken.safeTransferFrom(address(msg.sender), address(this), _amount);
            user.amount = user.amount.add(_amount);
			user.pid = _pid;
			pool.totalPool = pool.totalPool.add(_amount);   		
	
			address _referrer = users[msg.sender].referrer;
			for(uint256 i = 0;i<2;i++){				
				if(_referrer!= address(0) && isUserExists(_referrer)){
					users[_referrer].referAmount[i] = _amount.add(users[_referrer].referAmount[i]);					
					_referrer = users[_referrer].referrer;
				}else break;
			}				
        }
        emit Deposit(msg.sender, _pid, _amount);
    }
	

    function getReward(uint256 _pid) public  {

		PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        uint256 accPizzaPerShare = pool.accPizzaPerShare;
        uint256 lpSupply = pool.totalPool;
        if (block.timestamp > pool.lastRewardTime && lpSupply != 0) {
            uint256 multiplier =  getMultiplier(pool.lastRewardTime, block.timestamp);
            uint256 pizzaReward = multiplier.mul(getRewardRate()).mul(pool.allocPoint).div(totalAllocPoint);
            accPizzaPerShare = pool.accPizzaPerShare.add(pizzaReward.mul(1e18).div(lpSupply));
        }
        uint256 reward = user.amount.mul((accPizzaPerShare).sub(user.userRewardPerTokenPaid)).div(1e18).add(user.reward);
	
        if (reward > 0) {
			safePizzaTransfer(msg.sender, reward);
			user.rewardPaid = user.rewardPaid.add(reward);
			user.reward = 0;
            emit RewardPaid(msg.sender, reward);
        }		
		user.userRewardPerTokenPaid = accPizzaPerShare;
    }
	


    // Withdraw LP tokens from MasterChef.
    function withdraw(uint256 _pid, uint256 _amount) public{		
		UserInfo storage user = userInfo[_pid][msg.sender];
		
		
        PoolInfo storage pool = poolInfo[_pid];
        
        require(user.amount >= _amount, "withdraw: not good");
        updatePool(_pid,msg.sender);
               

		safePizzaTransfer(msg.sender, user.reward);
		
		safePizzaTransfer(projectAddress, user.reward.mul(10).div(100));
		
		user.rewardPaid = user.rewardPaid.add(user.reward);
		emit RewardPaid(msg.sender, user.rewardPaid);
        if(_amount > 0) {
            user.amount = user.amount.sub(_amount);
            pool.lpToken.safeTransfer(address(msg.sender), _amount);			
			pool.totalPool = pool.totalPool.sub(_amount);   	
			address _referrer = users[msg.sender].referrer;
			for(uint256 i = 0;i<2;i++){
				if(_referrer!= address(0) && isUserExists(_referrer)){
					users[_referrer].referAmount[i] = users[_referrer].referAmount[i].sub(_amount);	
					users[_referrer].referReward = 	users[_referrer].referReward.add(user.reward.mul(10).div(100).div(i+1));				
					safePizzaTransfer(_referrer, user.reward.mul(10).div(100).div(i+1));
					_referrer = users[_referrer].referrer;
				}else break;
			}	
        }
		user.reward = 0;
        emit Withdraw(msg.sender, _pid, _amount);
    }

    // Withdraw without caring about rewards. EMERGENCY ONLY.
   // function emergencyWithdraw(uint256 _pid) public {
   //     PoolInfo storage pool = poolInfo[_pid];
    //    UserInfo storage user = userInfo[_pid][msg.sender];
   //     pool.lpToken.safeTransfer(address(msg.sender), user.amount);
   //     emit EmergencyWithdraw(msg.sender, _pid, user.amount);
  //      user.amount = 0;
   // }

    // Safe pizza transfer function, just in case if rounding error causes pool to not have enough pizzas.
    function safePizzaTransfer(address _to, uint256 _amount) internal {
        uint256 pizzaBal = pizza.balanceOf(address(this));
        if (_amount > pizzaBal) {
            pizza.transfer(_to, pizzaBal);
        } else {
            pizza.transfer(_to, _amount);
        }
    }   

	
	modifier checkStart(){
       require(block.timestamp  > starttime,"not start");
       _;
    }


}

{
  "compilationTarget": {
    "MasterChef.sol": "MasterChef"
  },
  "evmVersion": "istanbul",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}