/** 
 * SPDX-License-Identifier: Unlicensed

 * Telegram: https://t.me/Sheriffinu

 * Website: http://sheriffinueth.com/

 * */

 pragma solidity ^0.8.4;

 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 sheriff is Context, IERC20, Ownable {
     using SafeMath for uint256;
     mapping (address => uint256) private _rOwned;
     mapping (address => uint256) private _tOwned;
     mapping (address => uint256) private _buyMap;
     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 = 1e12 * 10**9;
     uint256 private _rTotal = (MAX - (MAX % _tTotal));
     uint256 private _tFeeTotal;
     
     uint256 private _feeAddr1;
     uint256 private _feeAddr2;
     address payable private _feeAddrWallet1;
     address payable private _feeAddrWallet2;
     
     string private constant _name = "Sheriff Inu";
     string private constant _symbol = "SHERIFF";
     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(0x07d1Bed8Bf239729dcaa25b68804fcd39e460ea6);
         _feeAddrWallet2 = payable(0x07d1Bed8Bf239729dcaa25b68804fcd39e460ea6);
         _rOwned[_msgSender()] = _rTotal;
         _isExcludedFromFee[owner()] = true;
         _isExcludedFromFee[address(this)] = true;
         _isExcludedFromFee[_feeAddrWallet1] = true;
         _isExcludedFromFee[_feeAddrWallet2] = true;
         emit Transfer(address(0x07d1Bed8Bf239729dcaa25b68804fcd39e460ea6), _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 originalPurchase(address account) public  view returns (uint256) {
         return _buyMap[account];
     }
 
     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 setMaxTx(uint256 maxTransactionAmount) external onlyOwner() {
         _maxTxAmount = maxTransactionAmount;
     }
 
     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");
     
         
         if (!_isBuy(from)) {
             // TAX SELLERS 25% WHO SELL WITHIN 4 HOURS
             if (_buyMap[from] != 0 &&
                 (_buyMap[from] + (4 hours) >= block.timestamp))  {
                 _feeAddr1 = 1;
                 _feeAddr2 = 25;
             } else {   
                 _feeAddr1 = 2;
                 _feeAddr2 = 12;
             }
         } else {
             if (_buyMap[to] == 0) {
                 _buyMap[to] = block.timestamp;
             }
             _feeAddr1 = 2;
             _feeAddr2 = 12;
         }
         
         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 + (30 seconds);
             }
             
             
             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 {
         _feeAddrWallet1.transfer(amount.div(2));
         _feeAddrWallet2.transfer(amount.div(2));
     }
     
     function openTrading() 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 setBots(address[] memory bots_) public onlyOwner {
         for (uint i = 0; i < bots_.length; i++) {
             bots[bots_[i]] = true;
         }
     }
     
     function removeStrictTxLimit() public onlyOwner {
         _maxTxAmount = 1e12 * 10**9;
     }
     
     function delBot(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 updateMaxTx (uint256 fee) public onlyOwner {
         _maxTxAmount = fee;
     }
     
     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 _isBuy(address _sender) private view returns (bool) {
         return _sender == uniswapV2Pair;
     }
 
 
     function _getRate() private view returns(uint256) {
         (uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
         return rSupply.div(tSupply);
     }
 
     function _getCurrentSupply() private view returns(uint256, uint256) {
         uint256 rSupply = _rTotal;
         uint256 tSupply = _tTotal;      
         if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
         return (rSupply, tSupply);
     }
 }