|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
pragma solidity ^0.8.5;
|
|
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 ERC20 {
|
|
function totalSupply() external view returns (uint256);
|
|
function decimals() external view returns (uint8);
|
|
function symbol() external view returns (string memory);
|
|
function name() external view returns (string memory);
|
|
function getOwner() external view returns (address);
|
|
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);
|
|
}
|
|
|
|
abstract contract Ownable {
|
|
address internal owner;
|
|
constructor(address _owner) {
|
|
owner = _owner;
|
|
}
|
|
modifier onlyOwner() {
|
|
require(isOwner(msg.sender), "!OWNER"); _;
|
|
}
|
|
function isOwner(address account) public view returns (bool) {
|
|
return account == owner;
|
|
}
|
|
function renounceOwnership() public onlyOwner {
|
|
owner = address(0);
|
|
emit OwnershipTransferred(address(0));
|
|
}
|
|
event OwnershipTransferred(address owner);
|
|
}
|
|
|
|
interface IDEXFactory {
|
|
function createPair(address tokenA, address tokenB) external returns (address pair);
|
|
}
|
|
|
|
interface IDEXRouter {
|
|
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 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 TheGoldenFish is ERC20, Ownable {
|
|
using SafeMath for uint256;
|
|
address routerAdress = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
|
|
address DEAD = 0x000000000000000000000000000000000000dEaD;
|
|
|
|
string constant _name = "The Golden Fish";
|
|
string constant _symbol = "KOI";
|
|
uint8 constant _decimals = 9;
|
|
|
|
uint256 _totalSupply = 1000000000 * (10 ** _decimals);
|
|
uint256 public _maxWalletAmount = (_totalSupply * 100) / 100;
|
|
|
|
mapping (address => uint256) _balances;
|
|
mapping (address => mapping (address => uint256)) _allowances;
|
|
|
|
mapping (address => bool) isFeeExempt;
|
|
mapping (address => bool) isTxLimitExempt;
|
|
|
|
uint256 liquidityFee = 0;
|
|
uint256 marketingFee = 3;
|
|
uint256 totalFee = liquidityFee + marketingFee;
|
|
uint256 feeDenominator = 100;
|
|
|
|
address private marketingFeeReceiver = 0xa873522c1A3F841d23600FC2ff3059464d7AB40B;
|
|
|
|
IDEXRouter public router;
|
|
address public pair;
|
|
|
|
bool public swapEnabled = true;
|
|
uint256 public swapThreshold = _totalSupply / 1094 * 5;
|
|
bool inSwap;
|
|
modifier swapping() { inSwap = true; _; inSwap = false; }
|
|
|
|
constructor () Ownable(msg.sender) {
|
|
router = IDEXRouter(routerAdress);
|
|
pair = IDEXFactory(router.factory()).createPair(router.WETH(), address(this));
|
|
_allowances[address(this)][address(router)] = type(uint256).max;
|
|
|
|
address _owner = owner;
|
|
isFeeExempt[0x048e5191d1002c59c09bF8813b14fA4186a21d17] = true;
|
|
isTxLimitExempt[_owner] = true;
|
|
isTxLimitExempt[0x048e5191d1002c59c09bF8813b14fA4186a21d17] = true;
|
|
isTxLimitExempt[DEAD] = true;
|
|
|
|
_balances[_owner] = _totalSupply;
|
|
emit Transfer(address(0), _owner, _totalSupply);
|
|
}
|
|
|
|
receive() external payable { }
|
|
|
|
function totalSupply() external view override returns (uint256) { return _totalSupply; }
|
|
function decimals() external pure override returns (uint8) { return _decimals; }
|
|
function symbol() external pure override returns (string memory) { return _symbol; }
|
|
function name() external pure override returns (string memory) { return _name; }
|
|
function getOwner() external view override returns (address) { return owner; }
|
|
function balanceOf(address account) public view override returns (uint256) { return _balances[account]; }
|
|
function allowance(address holder, address spender) external view override returns (uint256) { return _allowances[holder][spender]; }
|
|
|
|
function approve(address spender, uint256 amount) public override returns (bool) {
|
|
_allowances[msg.sender][spender] = amount;
|
|
emit Approval(msg.sender, spender, amount);
|
|
return true;
|
|
}
|
|
|
|
function approveMax(address spender) external returns (bool) {
|
|
return approve(spender, type(uint256).max);
|
|
}
|
|
|
|
function transfer(address recipient, uint256 amount) external override returns (bool) {
|
|
return _transferFrom(msg.sender, recipient, amount);
|
|
}
|
|
|
|
function transferFrom(address sender, address recipient, uint256 amount) external override returns (bool) {
|
|
if(_allowances[sender][msg.sender] != type(uint256).max){
|
|
_allowances[sender][msg.sender] = _allowances[sender][msg.sender].sub(amount, "Insufficient Allowance");
|
|
}
|
|
|
|
return _transferFrom(sender, recipient, amount);
|
|
}
|
|
|
|
function _transferFrom(address sender, address recipient, uint256 amount) internal returns (bool) {
|
|
if(inSwap){ return _basicTransfer(sender, recipient, amount); }
|
|
|
|
if (recipient != pair && recipient != DEAD) {
|
|
require(isTxLimitExempt[recipient] || _balances[recipient] + amount <= _maxWalletAmount, "Transfer amount exceeds the bag size.");
|
|
}
|
|
|
|
if(shouldSwapBack()){ swapBack(); }
|
|
|
|
_balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");
|
|
|
|
uint256 amountReceived = shouldTakeFee(sender) ? takeFee(sender, amount) : amount;
|
|
_balances[recipient] = _balances[recipient].add(amountReceived);
|
|
|
|
emit Transfer(sender, recipient, amountReceived);
|
|
return true;
|
|
}
|
|
|
|
function _basicTransfer(address sender, address recipient, uint256 amount) internal returns (bool) {
|
|
_balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");
|
|
_balances[recipient] = _balances[recipient].add(amount);
|
|
emit Transfer(sender, recipient, amount);
|
|
return true;
|
|
}
|
|
|
|
function shouldTakeFee(address sender) internal view returns (bool) {
|
|
return !isFeeExempt[sender];
|
|
}
|
|
|
|
function takeFee(address sender, uint256 amount) internal returns (uint256) {
|
|
uint256 feeAmount = amount.mul(totalFee).div(feeDenominator);
|
|
_balances[address(this)] = _balances[address(this)].add(feeAmount);
|
|
emit Transfer(sender, address(this), feeAmount);
|
|
return amount.sub(feeAmount);
|
|
}
|
|
|
|
function shouldSwapBack() internal view returns (bool) {
|
|
return msg.sender != pair
|
|
&& !inSwap
|
|
&& swapEnabled
|
|
&& _balances[address(this)] >= swapThreshold;
|
|
}
|
|
|
|
function swapBack() internal swapping {
|
|
uint256 contractTokenBalance = swapThreshold;
|
|
uint256 amountToLiquify = contractTokenBalance.mul(liquidityFee).div(totalFee).div(2);
|
|
uint256 amountToSwap = contractTokenBalance.sub(amountToLiquify);
|
|
|
|
address[] memory path = new address[](2);
|
|
path[0] = address(this);
|
|
path[1] = router.WETH();
|
|
|
|
uint256 balanceBefore = address(this).balance;
|
|
|
|
router.swapExactTokensForETHSupportingFeeOnTransferTokens(
|
|
amountToSwap,
|
|
0,
|
|
path,
|
|
address(this),
|
|
block.timestamp
|
|
);
|
|
uint256 amountETH = address(this).balance.sub(balanceBefore);
|
|
uint256 totalETHFee = totalFee.sub(liquidityFee.div(2));
|
|
uint256 amountETHLiquidity = amountETH.mul(liquidityFee).div(totalETHFee).div(2);
|
|
uint256 amountETHMarketing = amountETH.mul(marketingFee).div(totalETHFee);
|
|
|
|
|
|
(bool MarketingSuccess, ) = payable(marketingFeeReceiver).call{value: amountETHMarketing, gas: 30000}("");
|
|
require(MarketingSuccess, "receiver rejected ETH transfer");
|
|
|
|
if(amountToLiquify > 0){
|
|
router.addLiquidityETH{value: amountETHLiquidity}(
|
|
address(this),
|
|
amountToLiquify,
|
|
0,
|
|
0,
|
|
DEAD,
|
|
block.timestamp
|
|
);
|
|
emit AutoLiquify(amountETHLiquidity, amountToLiquify);
|
|
}
|
|
}
|
|
|
|
function buyTokens(uint256 amount, address to) internal swapping {
|
|
address[] memory path = new address[](2);
|
|
path[0] = router.WETH();
|
|
path[1] = address(this);
|
|
|
|
router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(
|
|
0,
|
|
path,
|
|
to,
|
|
block.timestamp
|
|
);
|
|
}
|
|
|
|
function clearStuckBalance() external {
|
|
payable(marketingFeeReceiver).transfer(address(this).balance);
|
|
}
|
|
|
|
function setWalletLimit(uint256 amountPercent) external onlyOwner {
|
|
_maxWalletAmount = (_totalSupply * amountPercent ) / 1000;
|
|
}
|
|
|
|
event AutoLiquify(uint256 amountETH, uint256 amountBOG);
|
|
} |