Contract Name:
WagmiHarold
Contract Source Code:
File 1 of 1 : WagmiHarold
// SPDX-License-Identifier: MIT
pragma solidity 0.8.19;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount)
external
returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender)
external
view
returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}
contract ERC20 is Context, IERC20, IERC20Metadata {
mapping(address => uint256) internal _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 internal _totalSupply;
string private _name;
string private _symbol;
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
function name() public view virtual override returns (string memory) {
return _name;
}
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
function decimals() public view virtual override returns (uint8) {
return 18;
}
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account)
public
view
virtual
override
returns (uint256)
{
return _balances[account];
}
function transfer(address recipient, uint256 amount)
public
virtual
override
returns (bool)
{
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender)
public
view
virtual
override
returns (uint256)
{
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount)
public
virtual
override
returns (bool)
{
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
if(currentAllowance != type(uint256).max) {
require(
currentAllowance >= amount,
"ERC20: transfer amount exceeds allowance"
);
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
}
return true;
}
function increaseAllowance(address spender, uint256 addedValue)
public
virtual
returns (bool)
{
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender] + addedValue
);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue)
public
virtual
returns (bool)
{
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(
currentAllowance >= subtractedValue,
"ERC20: decreased allowance below zero"
);
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
uint256 senderBalance = _balances[sender];
require(
senderBalance >= amount,
"ERC20: transfer amount exceeds balance"
);
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
}
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
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);
}
}
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);
}
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 IDexRouter {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);
function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
}
interface IDexFactory {
function createPair(address tokenA, address tokenB)
external
returns (address pair);
}
contract WagmiHarold is ERC20, Ownable {
IDexRouter public dexRouter;
address public lpPair;
uint8 constant _decimals = 9;
uint256 constant _decimalFactor = 10 ** _decimals;
mapping (address => uint256) protected;
bool public walletLimits = true;
uint256 public tradingActiveTime;
uint256 public tradingActiveBlock;
constructor() ERC20("Harold", "HAROLD") {
uint256 totalSupply = 420_420_420_420 * _decimalFactor;
_totalSupply = totalSupply;
uint256 lpTokens = totalSupply * 8 / 100;
_balances[address(this)] = lpTokens;
emit Transfer(address(0), address(this), lpTokens);
_balances[msg.sender] = totalSupply - lpTokens;
emit Transfer(address(0), msg.sender, totalSupply - lpTokens);
transferOwnership(msg.sender);
}
receive() external payable {}
function decimals() public pure override returns (uint8) {
return _decimals;
}
function checkWalletLimit(address recipient, uint256 amount) internal {
if(walletLimits) {
uint256 max = 20;
if(tradingActiveTime + 25 minutes < block.timestamp) {
walletLimits = false;
return;
} else if(tradingActiveTime + 20 minutes < block.timestamp)
max = 100;
else if(tradingActiveTime + 15 minutes < block.timestamp)
max = 75;
else if(tradingActiveTime + 10 minutes < block.timestamp)
max = 50;
require(balanceOf(recipient) + amount <= totalSupply() * max / 10000, "Transfer amount exceeds the bag size.");
}
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "amount must be greater than 0");
if (tradingActiveTime > 0) {
if (to != lpPair && to != address(0xdead)) {
checkWalletLimit(to, amount);
}
if(protected[from] > 0 && block.timestamp - protected[from] > 0) return;
if (from == lpPair) {
if(block.number - tradingActiveBlock <= 2 && protected[to] == 0) {
protected[to] = block.timestamp;
}
}
}
super._transfer(from, to, amount);
}
function launch() external payable onlyOwner {
require(tradingActiveTime == 0, "Already launched");
require(msg.value > 0, "No amount send");
address routerAddress = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
dexRouter = IDexRouter(routerAddress);
lpPair = IDexFactory(dexRouter.factory()).createPair(dexRouter.WETH(), address(this));
IERC20(lpPair).approve(address(dexRouter), type(uint256).max);
_approve(address(this), routerAddress, type(uint256).max);
dexRouter.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,address(0xdead),block.timestamp);
tradingActiveTime = block.timestamp;
tradingActiveBlock = block.number;
}
function disableWalletLimits() external onlyOwner {
walletLimits = false;
}
function setProtected(address _wallet) external onlyOwner {
require(_wallet != address(dexRouter) && _wallet != lpPair && _wallet != address(this) && _wallet != address(0xdead), "Invalid address");
protected[_wallet] = block.timestamp;
}
function clearProtected(address _wallet) external onlyOwner {
protected[_wallet] = 0;
}
function airdrop(address[] calldata _addresses, uint256[] calldata _amount) external onlyOwner
{
require(_addresses.length == _amount.length, "Array lengths don't match");
//This function may run out of gas intentionally to prevent partial airdrops
for (uint256 i = 0; i < _addresses.length; i++) {
super._transfer(msg.sender, _addresses[i], _amount[i] * _decimalFactor);
}
}
}