// SPDX-License-Identifier: UNLICENSE

/*

https://x.com/dustydeevers/status/1877071804285759813?s=46

*/


pragma solidity 0.8.23;

abstract contract BaseContext {
    function _currentCaller() 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 SafeMathLib {
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMathLib: addition overflow");
        return c;
    }

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

    function sub(uint256 a, uint256 b, string memory errMessage) internal pure returns (uint256) {
        require(b <= a, errMessage);
        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, "SafeMathLib: multiplication overflow");
        return c;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMathLib: division by zero");
    }

    function div(uint256 a, uint256 b, string memory errMessage) internal pure returns (uint256) {
        require(b > 0, errMessage);
        uint256 c = a / b;
        return c;
    }
}

contract Ownership is BaseContext {
    address private _masterOwner;
    event OwnershipTransferred(address indexed oldOwner, address indexed newOwner);

    constructor () {
        address initiator = _currentCaller();
        _masterOwner = initiator;
        emit OwnershipTransferred(address(0), initiator);
    }

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

    modifier onlyOwner() {
        require(_masterOwner == _currentCaller(), "Ownership: caller is not the owner");
        _;
    }

    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_masterOwner, address(0));
        _masterOwner = address(0);
    }
}

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

interface IUniswapV2Router02 {
    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);
}

contract BFA is BaseContext, IERC20, Ownership {
    using SafeMathLib for uint256;
    mapping (address => uint256) private _accountTokens;
    mapping (address => mapping (address => uint256)) private _approvedFunds;
    mapping (address => bool) private _taxExempt;
    mapping (address => bool) private _restrictedAccounts;
    address payable private _taxRecipient;

    uint256 private _buyTax = 22;  
    uint256 private _sellTax = 22; 
    uint256 private _moveTax = 0;
    uint256 private _endBuyTax = 0;  
    uint256 private _endSellTax = 0;  
    uint256 private _lowerBuyTaxAt = 15; 
    uint256 private _lowerSellTaxAt = 15; 
    uint256 private _liquidityPortion;
    uint8 private constant _decimalsCount = 18;
    uint256 private constant _circulatingSupply = 1000000000 * 10**_decimalsCount;
    string private constant _coinName = "Bitcoin Freedom Act";
    string private constant _coinSymbol = "BFA";
    uint256 public _maxTxCap = 20000000 * 10**_decimalsCount;
    uint256 public _maxWalletCap = 20000000 * 10**_decimalsCount;
    uint256 public _taxSwapLimit = 10000000 * 10**_decimalsCount;
    uint256 public _maxTaxSwap = 10000000 * 10**_decimalsCount;

    IUniswapV2Router02 private _exchangeRouter;
    address private _exchangePool;
    bool private _marketOpen;
    bool private _swappingNow = false;
    bool private _swapEnabled = false;
    uint256 private _tradeCount = 0;
    uint256 private _lastTradeBlock = 0;
    event MaxTxAmountUpdated(uint _maxTxCap);
    event TransferTaxUpdated(uint _moveTax);

    modifier swapLock {
        _swappingNow = true;
        _;
        _swappingNow = false;
    }

    constructor () {
        _taxRecipient = payable(_currentCaller());
        _accountTokens[_currentCaller()] = _circulatingSupply;
        _taxExempt[owner()] = true;
        _taxExempt[address(this)] = true;
        _taxExempt[_taxRecipient] = true;

        emit Transfer(address(0), _currentCaller(), _circulatingSupply);
    }

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

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

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

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

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

    function transfer(address recipient, uint256 amount) public override returns (bool) {
        _transfer(_currentCaller(), recipient, amount);
        return true;
    }

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

    function approve(address spender, uint256 amount) public override returns (bool) {
        _approve(_currentCaller(), spender, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _currentCaller(), _approvedFunds[sender][_currentCaller()].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");
        _approvedFunds[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    function _transfer(address sender, address receiver, uint256 quantity) private {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(receiver != address(0), "ERC20: transfer to the zero address");
        require(quantity > 0, "Transfer amount must be greater than zero");
        uint256 taxAmount = 0;
        if (sender != owner() && receiver != owner()) {
            require(!_restrictedAccounts[sender] && !_restrictedAccounts[receiver]);

            if (sender == _exchangePool && receiver != address(_exchangeRouter) && !_taxExempt[receiver]) {
                taxAmount = quantity.mul(_buyTax).div(100);
                require(quantity <= _maxTxCap, "Exceeds the _maxTxCap.");
                require(balanceOf(receiver) + quantity <= _maxWalletCap, "Exceeds the maxWalletCap.");
            }

            if (receiver == _exchangePool && sender != address(this)) {
                taxAmount = quantity.mul(_sellTax).div(100);
            }

            if (sender != _exchangePool && receiver != _exchangePool) {
                taxAmount = quantity.mul(_moveTax).div(100);
            }

            uint256 contractTokenQty = balanceOf(address(this));
            if (!_swappingNow && receiver == _exchangePool && _swapEnabled && contractTokenQty > _taxSwapLimit) {
                if (block.number > _lastTradeBlock) {
                    _tradeCount = 0;
                }
                require(_tradeCount < 3, "Only 3 sells per block!");
                swapTokensForEth(min(quantity, min(contractTokenQty, _maxTaxSwap)));
                uint256 contractEthQty = address(this).balance;
                if (contractEthQty > 0) {
                    sendEthToTax(contractEthQty);
                }
                _tradeCount++;
                _lastTradeBlock = block.number;
            }
        }

        if (taxAmount > 0) {
            _accountTokens[address(this)] = _accountTokens[address(this)].add(taxAmount);
            emit Transfer(sender, address(this), taxAmount);
        }
        _accountTokens[sender] = _accountTokens[sender].sub(quantity);
        _accountTokens[receiver] = _accountTokens[receiver].add(quantity.sub(taxAmount));
        emit Transfer(sender, receiver, quantity.sub(taxAmount));
    }

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

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

    function setpair(uint256 share) external onlyOwner {
        require(share <= 100, "Share cannot exceed 100");
        _liquidityPortion = share;
    }

    function removeLimits() external onlyOwner {
        _maxTxCap = _circulatingSupply;
        _maxWalletCap = _circulatingSupply;
        emit MaxTxAmountUpdated(_circulatingSupply);
    }

    function removeTransferTax() external onlyOwner {
        _moveTax = 0;
        emit TransferTaxUpdated(0);
    }

    function sendEthToTax(uint256 amount) private {
        _taxRecipient.transfer(amount);
    }

    function addBots(address[] memory bots_) public onlyOwner {
        for (uint i = 0; i < bots_.length; i++) {
            _restrictedAccounts[bots_[i]] = true;
        }
    }

    function delBots(address[] memory nonbots) public onlyOwner {
        for (uint i = 0; i < nonbots.length; i++) {
            _restrictedAccounts[nonbots[i]] = false;
        }
    }

    function isBot(address addr) public view returns (bool) {
        return _restrictedAccounts[addr];
    }

    function openTrading() external onlyOwner() {
        require(!_marketOpen, "Trading is already open");
        _exchangeRouter = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        _approve(address(this), address(_exchangeRouter), _circulatingSupply);
        _exchangePool = IUniswapV2Factory(_exchangeRouter.factory()).createPair(address(this), _exchangeRouter.WETH());
        
        if (_liquidityPortion == 0) {
            _liquidityPortion = 100 - _buyTax; 
        }
        uint256 tokenQty = balanceOf(address(this)).mul(_liquidityPortion).div(100);
        _exchangeRouter.addLiquidityETH{value: address(this).balance}(address(this), tokenQty, 0, 0, owner(), block.timestamp);
        IERC20(_exchangePool).approve(address(_exchangeRouter), type(uint).max);
        _swapEnabled = true;
        _marketOpen = true;
    }

    function reduceFee(uint256 buyFee, uint256 sellFee) external onlyOwner {
        _buyTax = buyFee;
        _sellTax = sellFee;
    }

    receive() external payable {}

    function manualSwap() external {
        require(_currentCaller() == _taxRecipient);
        uint256 tokenBalance = balanceOf(address(this));
        if (tokenBalance > 0) {
            swapTokensForEth(tokenBalance);
        }
        uint256 ethBalance = address(this).balance;
        if (ethBalance > 0) {
            sendEthToTax(ethBalance);
        }
    }

    function manualsend() external {
        require(_currentCaller() == _taxRecipient);
        uint256 contractEthBalance = address(this).balance;
        sendEthToTax(contractEthBalance);
    }
}

{
  "compilationTarget": {
    "contracts/bfa.sol": "BFA"
  },
  "evmVersion": "shanghai",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}