pragma solidity ^0.6.12;

// SPDX-License-Identifier: Unlicensed
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;
}
}

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;
}
}

library Address {
function isContract(address account) internal view returns (bool) {
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');

// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
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);
}
}
}
}

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

event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor() internal {
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;
}

}

interface IUniswapV2Factory {
event PairCreated(address indexed token0, address indexed token1, address pair, uint256);

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(uint256) external view returns (address pair);

function allPairsLength() external view returns (uint256);

function createPair(address tokenA, address tokenB) external returns (address pair);

function setFeeTo(address) external;

function setFeeToSetter(address) external;
}

interface IUniswapV2Router01 {
function factory() external pure returns (address);

function WETH() external pure returns (address);

function addLiquidity(
address tokenA,
address tokenB,
uint256 amountADesired,
uint256 amountBDesired,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline
)
external
returns (
uint256 amountA,
uint256 amountB,
uint256 liquidity
);

function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);

function removeLiquidity(
address tokenA,
address tokenB,
uint256 liquidity,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline
) external returns (uint256 amountA, uint256 amountB);

function removeLiquidityETH(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
) external returns (uint256 amountToken, uint256 amountETH);

function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint256 liquidity,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountA, uint256 amountB);

function removeLiquidityETHWithPermit(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountToken, uint256 amountETH);

function swapExactTokensForTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);

function swapTokensForExactTokens(
uint256 amountOut,
uint256 amountInMax,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);

function swapExactETHForTokens(
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external payable returns (uint256[] memory amounts);

function swapTokensForExactETH(
uint256 amountOut,
uint256 amountInMax,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);

function swapExactTokensForETH(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);

function swapETHForExactTokens(
uint256 amountOut,
address[] calldata path,
address to,
uint256 deadline
) external payable returns (uint256[] memory amounts);

function quote(
uint256 amountA,
uint256 reserveA,
uint256 reserveB
) external pure returns (uint256 amountB);

function getAmountOut(
uint256 amountIn,
uint256 reserveIn,
uint256 reserveOut
) external pure returns (uint256 amountOut);

function getAmountIn(
uint256 amountOut,
uint256 reserveIn,
uint256 reserveOut
) external pure returns (uint256 amountIn);

function getAmountsOut(uint256 amountIn, address[] calldata path) external view returns (uint256[] memory amounts);

function getAmountsIn(uint256 amountOut, address[] calldata path) external view returns (uint256[] memory amounts);
}

// pragma solidity >=0.6.2;

interface IUniswapV2Router02 is IUniswapV2Router01 {
function removeLiquidityETHSupportingFeeOnTransferTokens(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
) external returns (uint256 amountETH);

function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountETH);

function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;

function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external payable;

function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
}

contract Universe is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
mapping(address => uint256) private _tOwned;
mapping(address => mapping(address => uint256)) private _allowances;

mapping(address => bool) private _isExcludedFromFee;

uint256 private _tTotal = 100000000000 * 10**18;

string private _name = 'Universe';
string private _symbol = 'Universe';
uint8 private _decimals = 18;

uint256 public _liquidityFee = 2;
uint256 private _previousLiquidityFee = _liquidityFee;

uint256 public _devFee = 2;
uint256 private _previousDevFee = _devFee;

address public devAddress;

mapping(address => bool) blackAddress;

address public router = 0x10ED43C718714eb63d5aA57B78B54704E256024E;
IUniswapV2Router02 public immutable uniswapV2Router;
address public immutable uniswapV2Pair;

bool inSwapAndLiquify;
bool public swapAndLiquifyEnabled = true;
uint256 public numTokensSellToAddToLiquidity = 50000000 * 10**18;

event NewNumTokensSellToAddToLiquidity(uint num);
event SwapAndLiquifyEnabledUpdated(bool enabled);
event SetDevAddress(address dev);
event SwapAndLiquify(uint256 tokensSwapped, uint256 ethReceived, uint256 tokensIntoLiquidity);

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

constructor() public {
_tOwned[_msgSender()] = _tTotal;

IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(router);
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
uniswapV2Router = _uniswapV2Router;
devAddress = owner();
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = 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) {
return _tOwned[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 _transferBothExcluded(
address sender,
address recipient,
uint256 tAmount
) private {
(uint256 tTransferAmount, uint256 tLiquidity, uint tDev) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_takeLiquidity(tLiquidity);
_takeDev(tDev);
emit Transfer(sender, recipient, tTransferAmount);
}

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

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

function setDevFeePercent(uint256 devFee) external onlyOwner {
_devFee = devFee;
_previousDevFee = _devFee;
}

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

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

function setNumTokensSellToAddToLiquidity(uint _numTokensSellToAddToLiquidity) public onlyOwner {
numTokensSellToAddToLiquidity = _numTokensSellToAddToLiquidity;
emit NewNumTokensSellToAddToLiquidity(numTokensSellToAddToLiquidity);
}


function setDevAddress(address _devAddress) public onlyOwner {
require(_devAddress!= address(0) , "_devAddress can not be zero address!");
devAddress = _devAddress;
emit SetDevAddress(_devAddress);
}

function setBlackAddress(address account) public onlyOwner {
blackAddress[account] = true;
}

function relieveBlackAddress(address account) public onlyOwner {
blackAddress[account] = false;
}

function withDraw() public onlyOwner{
payable(devAddress).transfer(address(this).balance);
}


receive() external payable {}

function _getValues(uint256 tAmount) private view returns ( uint256, uint256, uint256){
uint256 tLiquidity = calculateLiquidityFee(tAmount);
uint256 tDev = calculateDevFee(tAmount);
uint256 tTransferAmount = tAmount.sub(tLiquidity);
tTransferAmount = tTransferAmount.sub(tDev);
return (tTransferAmount, tLiquidity, tDev);
}

function _takeLiquidity(uint256 tLiquidity) private {
_tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity);
}

function _takeDev(uint256 tDev) private {
_tOwned[address(this)] = _tOwned[address(this)].add(tDev);
}

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

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

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

_previousDevFee = _devFee;
_previousLiquidityFee = _liquidityFee;

_liquidityFee = 0;
_devFee = 0;
}

function restoreAllFee() private {
_liquidityFee = _previousLiquidityFee;
_devFee = _previousDevFee;
}

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(!blackAddress[from], "blacklist");
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');
uint256 contractTokenBalance = balanceOf(address(this));

bool overMinTokenBalance = contractTokenBalance >= numTokensSellToAddToLiquidity;
if (overMinTokenBalance && !inSwapAndLiquify && from != uniswapV2Pair && swapAndLiquifyEnabled && from != router) {
contractTokenBalance = numTokensSellToAddToLiquidity;
swapAndLiquify(contractTokenBalance);
}
bool takeFee = true;
if (_isExcludedFromFee[from] || _isExcludedFromFee[to] || to == router) {
takeFee = false;
}
_tokenTransfer(from, to, amount, takeFee);
}

function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap {
uint256 allRate = _liquidityFee.add(_devFee);
uint256 halfLiquidityFee = _liquidityFee.div(2);
uint256 allNeedToSwap = halfLiquidityFee.add(_devFee);
uint256 allNeedToSwapToken = contractTokenBalance.mul(allNeedToSwap).div(allRate);
uint256 otherToken = contractTokenBalance.sub(allNeedToSwapToken);
uint256 initialBalance = address(this).balance;
swapTokensForEth(allNeedToSwapToken);
uint256 newBalance = address(this).balance.sub(initialBalance);

uint256 halfLiquidityFeeGet = newBalance.mul(halfLiquidityFee).div(allNeedToSwap);
uint256 devBalance = newBalance.sub(halfLiquidityFeeGet);
addLiquidity(otherToken, halfLiquidityFeeGet);
payable(devAddress).transfer(devBalance);
emit SwapAndLiquify(allNeedToSwapToken, newBalance, otherToken);
}

function swapTokensForEth(uint256 tokenAmount) private {
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 addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.addLiquidityETH{ value: ethAmount }(address(this),tokenAmount,0,0,owner(),block.timestamp);
}
function _tokenTransfer(
address sender,
address recipient,
uint256 amount,
bool takeFee
) private {
if (!takeFee) removeAllFee();
_transferBothExcluded(sender, recipient, amount);
if (!takeFee) restoreAllFee();
}

}