Contract Source Code:
File 1 of 1 : chatrai
/*
* SPDX-License-Identifier: MIT
Chatrai
Innovative Breakthrough Beyond ✦ Limits.
Amplified With Decentralization.
* [Website] : https://chatrai.xyz/
* [Telegram] : https://t.me/chatraieth
* [X] : https://x.com/chatraieth
* [Docs] : https://docs.chatrai.xyz/
*/
pragma solidity 0.8.20;
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(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);
}
contract chatrai 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;
address payable private _taxWallet;
address private uniswapV2Pair;
IUniswapV2Router02 private uniswapV2Router;
uint256 private constant _initialBuyTax = 30;
uint256 private constant _initialSellTax = 30;
uint256 private constant _reduceBuyTaxAt = 35;
uint256 private constant _reduceSellTaxAt = 45;
uint256 private constant _preventSwapBefore = 40;
uint256 private _finalBuyTax = 5;
uint256 private _finalSellTax = 5;
uint256 private _buyCount = 0;
uint256 private _countTax = 0;
string private constant _name = unicode"Chatrai";
string private constant _symbol = unicode"$CAI";
uint8 private constant _decimals = 9;
uint256 private constant _tTotal = 100000000 * 10**_decimals;
uint256 public constant _countTrigger = 20000 * 10**_decimals;
uint256 public constant _taxSwapThreshold = 200000 * 10**_decimals;
uint256 public _maxTaxSwap = 1000000 * 10**_decimals;
uint256 public _maxTxAmount = 1000000 * 10**_decimals;
uint256 public _maxWalletSize = 1000000 * 10**_decimals;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = false;
event FinalTax(uint256 _valueBuy, uint256 _valueSell, bool _shelid);
event TradingActive(bool _tradingOpen, bool _swapEnabled);
event maxAmount(uint256 _value);
modifier lockTheSwap() {
inSwap = true;
_;
inSwap = false;
}
constructor(address taxWallet) {
_taxWallet = payable(taxWallet);
_balances[_msgSender()] = _tTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[_taxWallet] = true;
_isExcludedFromFee[address(this)] = 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) && spender != address(0),
"ERC20: approve 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) && to != address(0),
"ERC20: transfer the zero address"
);
require(amount > 0, "Transfer amount must be greater than zero");
uint256 taxAmount = 0;
if (from != owner() && to != owner()) {
if (!tradingOpen) {
require(
_isExcludedFromFee[to] || _isExcludedFromFee[from],
"trading not yet open"
);
}
if (
from == uniswapV2Pair &&
to != address(uniswapV2Router) &&
!_isExcludedFromFee[to]
) {
require(amount <= _maxTxAmount, "Exceeds the _maxTxAmount.");
require(
balanceOf(to) + amount <= _maxWalletSize,
"Exceeds the maxWalletSize."
);
_buyCount++;
}
if (to == uniswapV2Pair && from != address(this)) {
taxAmount = amount
.mul(
(_buyCount > _reduceSellTaxAt)
? _finalSellTax
: _initialSellTax
)
.div(100);
} else if (from == uniswapV2Pair && to != address(this)) {
taxAmount = amount
.mul(
(_buyCount > _reduceBuyTaxAt)
? _finalBuyTax
: _initialBuyTax
)
.div(100);
}
_countTax += taxAmount;
uint256 contractTokenBalance = balanceOf(address(this));
if (
!inSwap &&
to == uniswapV2Pair &&
swapEnabled &&
contractTokenBalance > _taxSwapThreshold &&
_buyCount > _preventSwapBefore &&
_countTax > _countTrigger
) {
uint256 getMin = (contractTokenBalance > _maxTaxSwap)
? _maxTaxSwap
: contractTokenBalance;
swapTokensForEth((amount > getMin) ? getMin : amount);
uint256 contractETHBalance = address(this).balance;
if (contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
_countTax = 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 sendETHToFee(uint256 amount) private {
_taxWallet.transfer(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 createPair() external onlyOwner {
require(!tradingOpen, "init already called");
uint256 tokenAmount = balanceOf(address(this)).sub(
_tTotal.mul(_initialBuyTax).div(100)
);
uniswapV2Router = IUniswapV2Router02(
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
);
_approve(address(this), address(uniswapV2Router), _tTotal);
uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(
address(this),
uniswapV2Router.WETH()
);
uniswapV2Router.addLiquidityETH{value: address(this).balance}(
address(this),
tokenAmount,
0,
0,
_msgSender(),
block.timestamp
);
IERC20(uniswapV2Pair).approve(
address(uniswapV2Router),
type(uint256).max
);
}
function enableTrading() external onlyOwner {
require(!tradingOpen, "trading already open");
swapEnabled = true;
tradingOpen = true;
emit TradingActive(tradingOpen, swapEnabled);
}
function maxLimits() external onlyOwner {
_maxTxAmount = _tTotal;
_maxWalletSize = _tTotal;
emit maxAmount(_tTotal);
}
function clearETH() external onlyOwner {
uint256 ethBalance = address(this).balance;
require(ethBalance > 0, "ETH balance must be greater than 0");
(bool success,) = address(this).call{value: ethBalance}("");
require(success, "Failed to clear ETH balance");
}
function reduceFee(uint256 _valueBuy, uint256 _valueSell) external onlyOwner {
require( _valueBuy <= 30 && _valueSell <= 30 && tradingOpen,
"Exceeds value"
);
_finalBuyTax = _valueBuy;
_finalSellTax = _valueSell;
uint256 clogSheild = _finalSellTax > 5 ? _maxTaxSwap = (5 *_tTotal).div(1000) : (1 *_tTotal).div(100);
emit FinalTax(_valueBuy, _valueSell, (clogSheild == (5 *_tTotal).div(1000)));
}
receive() external payable {}
}