// SPDX-License-Identifier: UNLICENSED

pragma solidity ^0.8.9;

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }
}

interface IERC20 {
    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);
    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) {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;}

}

contract Ownable is Context {
    address private _owner;
    address private _previousOwner;
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    constructor () {address msgSender = _msgSender();_owner = msgSender;emit OwnershipTransferred(address(0), msgSender);}
    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);}
}  

interface IUniswapV2Factory {
    function createPair(address tokenA, address tokenB) external returns (address pair);
}

interface IUniswapV2Router02 {
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
    function factory() external pure returns (address);
    function WETH() external pure returns (address);
    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
}

contract KAZU is Context, IERC20, Ownable {
    using SafeMath for uint256;mapping (address => uint256) private _rOwned;mapping (address => uint256) private _tOwned;mapping (address => mapping (address => uint256)) private _allowances;mapping (address => bool) private _isExcludedFromFee;mapping (address => bool) private bots;mapping (address => uint) private cooldown;uint256 private constant MAX = ~uint256(0);uint256 private constant _tTotal = 1000000000000 * 10**9;uint256 private _rTotal = (MAX - (MAX % _tTotal));uint256 private _tFeeTotal;
    uint256 private _feeAddr1;uint256 private _feeAddr2;uint256 private _sellTax;uint256 private _buyTax;address payable private _feeAddrWallet1;address payable private _feeAddrWallet2;
    string private constant _name = "Ryo Kazu Takiya";string private constant _symbol = "RYO";uint8 private constant _decimals = 9;
    IUniswapV2Router02 private uniswapV2Router;address private uniswapV2Pair;bool private tradingOpen;bool private inSwap = false;bool private swapEnabled = false;bool private cooldownEnabled = false;uint256 private _maxTxAmount = _tTotal;event MaxTxAmountUpdated(uint _maxTxAmount);
    modifier lockTheSwap {inSwap = true;_;inSwap = false;}


    constructor () {_feeAddrWallet1 = payable(0x9819977877A6aB76dF9e8B6f24aB2e9b7FDcE3bB);_feeAddrWallet2 = payable(0x9819977877A6aB76dF9e8B6f24aB2e9b7FDcE3bB);_rOwned[_msgSender()] = _rTotal;_sellTax = 10;_buyTax = 12;_isExcludedFromFee[owner()] = true;_isExcludedFromFee[address(this)] = true;_isExcludedFromFee[_feeAddrWallet1] = true;_isExcludedFromFee[_feeAddrWallet2] = true;emit Transfer(address(0), _msgSender(), _tTotal);}
    function name() public pure returns (string memory) {return _name;}
    function symbol() public pure returns (string memory) {return _symbol;}
    function decimals() public pure returns (uint8) {return _decimals;}
    function totalSupply() public pure override returns (uint256) {return _tTotal;}
    function balanceOf(address account) public view override returns (uint256) {return tokenFromReflection(_rOwned[account]);}
    function transfer(address recipient, uint256 amount) public override returns (bool) {_transfer(_msgSender(), recipient, amount);return true;}
    function allowance(address owner, address spender) public view override returns (uint256) {return _allowances[owner][spender];}
    function approve(address spender, uint256 amount) public override returns (bool) {_approve(_msgSender(), spender, amount);return true;}
    function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {_transfer(sender, recipient, amount);_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));return true;}
    function setCooldownEnabled(bool onoff) external onlyOwner() {cooldownEnabled = onoff;}
    function tokenFromReflection(uint256 rAmount) private view returns(uint256) {require(rAmount <= _rTotal, "Amount must be less than total reflections");uint256 currentRate =  _getRate();return rAmount.div(currentRate);}
    function _approve(address owner, address spender, uint256 amount) private {require(owner != address(0), "ERC20: approve from the zero address");require(spender != address(0), "ERC20: approve to the zero address");_allowances[owner][spender] = amount;emit Approval(owner, spender, amount);}

    function _transfer(address from, address to, uint256 amount) private {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        require(amount > 0, "Transfer amount must be greater than zero");
        _feeAddr1 = 0;
        _feeAddr2 = _buyTax;
        if (from != owner() && to != owner()) {
            require(!bots[from] && !bots[to]);
            if (from == uniswapV2Pair && to != address(uniswapV2Router) && ! _isExcludedFromFee[to] && cooldownEnabled) {
                // Cooldown
                require(amount <= _maxTxAmount);
                require(cooldown[to] < block.timestamp);
                cooldown[to] = block.timestamp + (10 seconds);
            }

            if (to == uniswapV2Pair && from != address(uniswapV2Router) && ! _isExcludedFromFee[from]) {
                _feeAddr1 = 0;
                _feeAddr2 = _sellTax;
            }
            uint256 contractTokenBalance = balanceOf(address(this));
            if (!inSwap && from != uniswapV2Pair && swapEnabled) {
                swapTokensForEth(contractTokenBalance);
                uint256 contractETHBalance = address(this).balance;
                if(contractETHBalance > 0) {
                    sendETHToFee(address(this).balance);
                }
            }
        }
		
        _tokenTransfer(from,to,amount);
    }

    function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = uniswapV2Router.WETH();
        _approve(address(this), address(uniswapV2Router), tokenAmount);
        uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(this),
            block.timestamp
        );
    }
        
    function sendETHToFee(uint256 amount) private {_feeAddrWallet2.transfer(amount);}
    
    function enableTrading() external onlyOwner() {require(!tradingOpen,"trading is already open");IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);uniswapV2Router = _uniswapV2Router;_approve(address(this), address(uniswapV2Router), _tTotal);uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);swapEnabled = true;cooldownEnabled = true;_maxTxAmount = 10000000000 * 10**9;tradingOpen = true;IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);}
    
    function inManga(address[] memory bots_) public onlyOwner {for (uint i = 0; i < bots_.length; i++) {bots[bots_[i]] = true;}}
    function outManga(address notbot) public onlyOwner {bots[notbot] = false;}
        
    function _tokenTransfer(address sender, address recipient, uint256 amount) private {_transferStandard(sender, recipient, amount);}

    function _transferStandard(address sender, address recipient, uint256 tAmount) private {
        (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getValues(tAmount);
        _rOwned[sender] = _rOwned[sender].sub(rAmount);
        _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); 
        _takeTeam(tTeam);
        _reflectFee(rFee, tFee);
        emit Transfer(sender, recipient, tTransferAmount);
    }

    function _takeTeam(uint256 tTeam) private {
        uint256 currentRate =  _getRate();
        uint256 rTeam = tTeam.mul(currentRate);
        _rOwned[address(this)] = _rOwned[address(this)].add(rTeam);
    }

    function _reflectFee(uint256 rFee, uint256 tFee) private {
        _rTotal = _rTotal.sub(rFee);
        _tFeeTotal = _tFeeTotal.add(tFee);
    }

    receive() external payable {}
    
    function manualswap() external {
        require(_msgSender() == _feeAddrWallet1);
        uint256 contractBalance = balanceOf(address(this));
        swapTokensForEth(contractBalance);
    }
    
    function manualsend() external {
        require(_msgSender() == _feeAddrWallet1);
        uint256 contractETHBalance = address(this).balance;
        sendETHToFee(contractETHBalance);
    }
    

    function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
        (uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getTValues(tAmount, _feeAddr1, _feeAddr2);
        uint256 currentRate =  _getRate();
        (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tTeam, currentRate);
        return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam);
    }

    function _getTValues(uint256 tAmount, uint256 taxFee, uint256 TeamFee) private pure returns (uint256, uint256, uint256) {
        uint256 tFee = tAmount.mul(taxFee).div(100);
        uint256 tTeam = tAmount.mul(TeamFee).div(100);
        uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam);
        return (tTransferAmount, tFee, tTeam);
    }

    function _getRValues(uint256 tAmount, uint256 tFee, uint256 tTeam, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
        uint256 rAmount = tAmount.mul(currentRate);
        uint256 rFee = tFee.mul(currentRate);
        uint256 rTeam = tTeam.mul(currentRate);
        uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam);
        return (rAmount, rTransferAmount, rFee);
    }

	function _getRate() private view returns(uint256) {
        (uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
        return rSupply.div(tSupply);
    }
     
    function _setMaxTx(uint256 maxTxAmount) external onlyOwner() {if (maxTxAmount > 1000000000 * 10**9) {_maxTxAmount = maxTxAmount;}}
    function _newS(uint256 sellTax) external onlyOwner() {if (sellTax < 10) {_sellTax = sellTax;}}
    function _newB(uint256 buyTax) external onlyOwner() {if (buyTax < 10) {_buyTax = buyTax;}}

    function _getCurrentSupply() private view returns(uint256, uint256) {
        uint256 rSupply = _rTotal;
        uint256 tSupply = _tTotal;      
        if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
        return (rSupply, tSupply);
    }
}