function withdraw() public {
require(canWithdraw(msg.sender), 'Error time');
address payable user = payable(msg.sender);

uint256 amountOnContract = address(this).balance;
uint256 amountToWithdraw = min(users[user].currentBalance, amountOnContract);

users[user].currentBalance = 0;

uint256 fee = amountToWithdraw.mul(withdrawCommission).div(100);
owner().transfer(fee);
user.transfer(amountToWithdraw.sub(fee));

emit WITHDRAW_INCOME(user, amountToWithdraw.sub(fee));
}

function withdrawRef() public {
address payable user = payable(msg.sender);

uint256 amountOnContract = address(this).balance;
uint256 refAmount = users[user].refAmount;
users[user].refAmount = 0;
uint256 amountToWithdraw = min(amountOnContract, refAmount);

uint256 fee = amountToWithdraw.mul(withdrawCommission).div(100);
owner().transfer(fee);
user.transfer(amountToWithdraw.sub(fee));

emit WITHDRAW_REF(user, amountToWithdraw.sub(fee));
}

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