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January 2, 2024 10:42
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// SPDX-License-Identifier: MIT | |
pragma solidity 0.8.23; | |
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; | |
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 NewTestToken is Context, IERC20, Ownable { | |
using SafeMath for uint256; | |
mapping(address => uint256) private _balances; | |
mapping(address => mapping(address => uint256)) private _allowances; | |
mapping(address => bool) private _isExcludedFromFee; | |
mapping(address => bool) private _buyerMap; | |
mapping(address => bool) private bots; | |
mapping(address => uint256) private _holderLastTransferTimestamp; | |
address payable private _taxWallet; | |
address public _marketingWallet; | |
address public _devWallet; | |
address public _cexWalelt; | |
uint256 private _initialBuyTax = 30; | |
uint256 private _initialSellTax = 40; | |
uint256 private _finalBuyTax = 5; | |
uint256 private _finalSellTax = 5; | |
uint256 private _reduceBuyTaxAt = 56; | |
uint256 private _reduceSellTaxAt = 56; | |
uint256 private _preventSwapBefore = 20; | |
uint256 public _buyCount = 0; | |
uint256 public startTime; | |
uint8 private constant _decimals = 18; | |
uint256 private constant _tTotal = 100000000 * 10 ** _decimals; // 100 million | |
string private constant _name = unicode"New Test Token"; | |
string private constant _symbol = unicode"NTT"; | |
uint256 public _maxTxAmount = (_tTotal * 3) / 100; // 3% of total supply | |
uint256 public _maxWalletSize = (_tTotal * 2) / 100; // 2% of total supply | |
uint256 public _taxSwapThreshold = _tTotal * 5 / 1000; // 0.5% of total supply | |
uint256 public _maxTaxSwap = _tTotal / 1000; // 0.1% of total supply | |
IUniswapV2Router02 private uniswapV2Router; | |
address private uniswapV2Pair; | |
bool public tradingOpen = false; | |
bool private inSwap = false; | |
bool private swapEnabled = false; | |
event MaxTxAmountUpdated(uint _maxTxAmount); | |
modifier lockTheSwap { | |
inSwap = true; | |
_; | |
inSwap = false; | |
} | |
// send marketing(5%), dev(2.5), cex(2.5), rest to token address | |
constructor (address marketingWallet, address cexWallet, address devWallet) { | |
_taxWallet = payable(_msgSender()); | |
_marketingWallet = marketingWallet; | |
_cexWalelt = cexWallet; | |
_devWallet = devWallet; | |
_balances[_msgSender()] = (_tTotal * 90) / 100; | |
_balances[_marketingWallet] = (_tTotal * 5) / 100; | |
_balances[_cexWalelt] = (_tTotal * 25) / 1000; | |
_balances[_devWallet] = (_tTotal * 25) / 1000; | |
_isExcludedFromFee[owner()] = true; | |
_isExcludedFromFee[address(this)] = true; | |
_isExcludedFromFee[_taxWallet] = true; | |
_isExcludedFromFee[_marketingWallet] = true; | |
_isExcludedFromFee[_cexWalelt] = true; | |
_isExcludedFromFee[_devWallet] = 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 _balances[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 _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"); | |
uint256 taxAmount = 0; | |
(uint256 _buyTax, uint256 _sellTax) = getTax(); | |
if (from != owner() && to != owner()) { | |
require(!bots[from] && !bots[to], "Not allow bot buy"); | |
if (from == uniswapV2Pair && to != address(uniswapV2Router) && !_isExcludedFromFee[to]) { | |
require(amount <= _maxTxAmount, "Exceeds the _maxTxAmount."); | |
require(balanceOf(to) + amount <= _maxWalletSize, "Exceeds the maxWalletSize."); | |
if (_buyCount < _preventSwapBefore) { | |
require(!isContract(to), "Not allow contract buy now"); | |
} | |
_buyCount++; | |
_buyerMap[to] = true; | |
} | |
// buy tax | |
taxAmount = amount.mul(_buyTax).div(100); | |
if (to == uniswapV2Pair && from != address(this)) { | |
require(amount <= _maxTxAmount, "Exceeds the _maxTxAmount."); | |
//sell tax | |
taxAmount = amount.mul(_sellTax).div(100); | |
require(_buyCount > _preventSwapBefore || _buyerMap[from], "Seller is not buyer"); | |
} | |
uint256 contractTokenBalance = balanceOf(address(this)); | |
if (!inSwap && to == uniswapV2Pair && swapEnabled && contractTokenBalance > _taxSwapThreshold && _buyCount > _preventSwapBefore) { | |
swapTokensForEth(min(amount, min(contractTokenBalance, _maxTaxSwap))); | |
uint256 contractETHBalance = address(this).balance; | |
if (contractETHBalance > 0) { | |
sendETHToFee(address(this).balance); | |
} | |
} | |
} | |
// add liquidity dont charge fee | |
if (_isExcludedFromFee[to] && to == address(uniswapV2Pair)) { | |
taxAmount = 0; | |
} | |
// no fee when transfer | |
if(from != address(uniswapV2Pair) && to != address(uniswapV2Pair)) { | |
taxAmount = 0; | |
} | |
if (taxAmount > 0) { | |
_balances[address(this)] = _balances[address(this)].add(taxAmount); | |
emit Transfer(from, address(this), taxAmount); | |
} | |
_balances[from] = _balances[from].sub(amount); | |
_balances[to] = _balances[to].add(amount.sub(taxAmount)); | |
emit Transfer(from, to, amount.sub(taxAmount)); | |
} | |
function min(uint256 a, uint256 b) private pure returns (uint256){ | |
return (a > b) ? b : a; | |
} | |
function swapTokensForEth(uint256 tokenAmount) private lockTheSwap { | |
if (tokenAmount == 0) {return;} | |
if (!tradingOpen) {return;} | |
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 removeLimits() external onlyOwner { | |
_maxTxAmount = _tTotal; | |
_maxWalletSize = _tTotal; | |
emit MaxTxAmountUpdated(_tTotal); | |
} | |
function setMaxTxPercentToDefault() external onlyOwner() { | |
_maxTxAmount = _tTotal.div(100); // Updates the maxTxAmount to be 1% of total supply | |
emit MaxTxAmountUpdated(_maxTxAmount); // Emitting event for the update operation | |
} | |
function sendETHToFee(uint256 amount) private { | |
_taxWallet.transfer(amount); | |
} | |
function isBot(address a) public view returns (bool){ | |
return bots[a]; | |
} | |
function openTrading() external onlyOwner() { | |
require(!tradingOpen, "trading is already open"); | |
uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); | |
_approve(address(this), address(uniswapV2Router), _tTotal); | |
uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this), uniswapV2Router.WETH()); | |
_isExcludedFromFee[address(uniswapV2Pair)] = true; | |
uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this), balanceOf(address(this)), 0, 0, owner(), block.timestamp); | |
IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max); | |
_isExcludedFromFee[address(uniswapV2Pair)] = false; | |
swapEnabled = true; | |
tradingOpen = true; | |
startTime = block.timestamp; | |
} | |
receive() external payable {} | |
function isContract(address account) private view returns (bool) { | |
uint256 size; | |
assembly { | |
size := extcodesize(account) | |
} | |
return size > 0; | |
} | |
function manualSwap() external { | |
require(_msgSender() == _taxWallet); | |
uint256 tokenBalance = balanceOf(address(this)); | |
if (tokenBalance > 0) { | |
swapTokensForEth(tokenBalance); | |
} | |
uint256 ethBalance = address(this).balance; | |
if (ethBalance > 0) { | |
sendETHToFee(ethBalance); | |
} | |
} | |
function getTax() public view returns (uint, uint) { | |
if (startTime + 60 * 3 > block.timestamp) { | |
return (_initialBuyTax, _initialSellTax); | |
} else if (startTime + 60 * 3 < block.timestamp && block.timestamp < startTime + 60 * 11) { | |
return (20, 20); | |
} else if (startTime + 60 * 11 < block.timestamp && block.timestamp < startTime + 60 * 20) { | |
return (10, 10); | |
} else if (block.timestamp > startTime + 60 * 20) { | |
return (_finalBuyTax, _finalSellTax); | |
} | |
} | |
} |
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