// File: contract.sol



/**

Socials:

Telegram: https://t.me/blockrockerc
Website: https://blockrocketh.com/
Twitter: https://twitter.com/BlockRockERC

*/

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.14;

interface IUniswapV2Router02 {
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;

    function factory() external pure returns (address);

    function WETH() external pure returns (address);
}

interface IUniswapV2Factory {
    function createPair(
        address tokenA,
        address tokenB
    ) external returns (address pair);
}

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }
}

abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(
        address indexed previousOwner,
        address indexed newOwner
    );
    constructor() {
        _transferOwnership(_msgSender());
    }
    modifier onlyOwner() {
        _checkOwner();
        _;
    }
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }
    function owner() public view virtual returns (address) {
        return _owner;
    }

    function renounceContract() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(
            newOwner != address(0),
            "Ownable: new owner is the zero address"
        );
        _transferOwnership(newOwner);
    }

    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

interface IERC20 {
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );

    function totalSupply() external view returns (uint256);
    function balanceOf(address account) external view returns (uint256);
    function transfer(address to, 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 from,
        address to,
        uint256 amount
    ) external returns (bool);
}

contract BLOCK is IERC20, Ownable {
    string private constant _name = "Blockrock";
    string private constant _symbol = "BROCK";
    uint8 private constant _decimals = 9;
    uint256 public _swapTokensAtAmount = 1012000 * 10 ** 9;
    uint256 private _taxFeeOnBuy = 2;
    uint256 private _taxFeeOnSell = 2;
    address payable private constant _developmentAddress =
        payable(0xC895288dC97b23609EaD146361E464Deb5B4CAe4);
    address payable private constant _marketingAddress =
        payable(0xC895288dC97b23609EaD146361E464Deb5B4CAe4);
    uint256 private constant _totalSupply = 10000000 * 10 ** 9;
    uint256 private constant _maxFee = 2; //Highest Tax can be set
    uint256 public _maxTxAmount = 450000 * 10 ** 9;
    uint256 public _maxWalletSize = 450000 * 10 ** 9;
    bool public tradingActive = false;
    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;
    mapping(address => bool) private _isExcludedFromFee;
    IUniswapV2Router02 public uniswapV2Router;
    address public uniswapV2Pair;
    bool private inSwap = false;
    modifier lockTheSwap() {
        inSwap = true;
        _;
        inSwap = false;
    }
    constructor() {
        _balances[_msgSender()] = _totalSupply;
        uniswapV2Router = IUniswapV2Router02(
            0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
        );
        uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(
            address(this),
            uniswapV2Router.WETH()
        );
        _isExcludedFromFee[owner()] = true;
        _isExcludedFromFee[_developmentAddress] = true;
        _isExcludedFromFee[_marketingAddress] = true;
        _isExcludedFromFee[address(this)] = true;

        emit Transfer(address(0), _msgSender(), _totalSupply);
    }

    function name() public pure returns (string memory) {return _name;}
    function decimals() public pure returns (uint8) {return _decimals;}
    function totalSupply() public pure override returns (uint256) {return _totalSupply;}
    function symbol() public pure returns (string memory) {return _symbol;}
    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }

    function allowance(
        address owner,
        address spender
    ) public view override returns (uint256) {
        return _allowances[owner][spender];
    }

    function openTrading() external onlyOwner {
        require(tradingActive == false, "The trading has been opened.");
        tradingActive = true;
    }

    function transfer(
        address recipient,
        uint256 amount
    ) public override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    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) {
        uint256 currentAllowance = _allowances[sender][_msgSender()];
        require(
            currentAllowance >= amount,
            "ERC20: transfer amount exceeds allowance"
        );
        unchecked {
            _approve(sender, _msgSender(), currentAllowance - amount);
        }
        _transfer(sender, recipient, amount);
        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 from, address to, uint256 amount) private {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        require(amount > 0, "Transfer amount must be greater than zero");
        if (tradingActive == false) {
                require(_isExcludedFromFee[from] || _isExcludedFromFee[to], "ERC20: Trading is not active.");
            }
        if (from != owner() && to != owner()) {
            if (
                to != _marketingAddress &&
                from != _marketingAddress &&
                to != _developmentAddress &&
                from != _developmentAddress
            ) {
                require(amount <= _maxTxAmount, "TOKEN: Max Transaction Limit");
            }

            if (
                to != uniswapV2Pair &&
                to != _marketingAddress &&
                from != _marketingAddress &&
                to != _developmentAddress &&
                from != _developmentAddress
            ) {
                require(
                    balanceOf(to) + amount < _maxWalletSize,
                    "TOKEN: Balance exceeds wallet size!"
                );
            }
            uint256 contractTokenBalance = balanceOf(address(this));

            if (contractTokenBalance >= _maxTxAmount) {
                contractTokenBalance = _maxTxAmount;
            }

            bool canSwap = contractTokenBalance >= _swapTokensAtAmount;

            if (
                canSwap &&
                !inSwap &&
                from != uniswapV2Pair &&
                !_isExcludedFromFee[from] &&
                !_isExcludedFromFee[to]
            ) {
                swapTokensForEth(contractTokenBalance);

                uint256 contractETHBalance = address(this).balance;
                if (contractETHBalance > 0) {
                    _marketingAddress.transfer(address(this).balance);
                }
            }
        }

        //Transfer Tokens
        uint256 _taxFee = 0;
        if (
            (_isExcludedFromFee[from] || _isExcludedFromFee[to]) ||
            (from != uniswapV2Pair && to != uniswapV2Pair)
        ) {
            _taxFee = 0;
        } else {
            //Set Fee for Buys
            if (from == uniswapV2Pair && to != address(uniswapV2Router)) {
                _taxFee = _taxFeeOnBuy;
            }

            //Set Fee for Sells
            if (to == uniswapV2Pair && from != address(uniswapV2Router)) {
                _taxFee = _taxFeeOnSell;
            }
        }

        _tokenTransfer(from, to, amount, _taxFee);
    }

    function toggleFees(
        uint256 taxFeeOnBuy,
        uint256 taxFeeOnSell
    ) external onlyOwner {
        _taxFeeOnBuy = taxFeeOnBuy;
        _taxFeeOnSell = taxFeeOnSell;
    }

    function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = uniswapV2Router.WETH();
        _approve(address(this), address(uniswapV2Router), tokenAmount);
        uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(this),
            block.timestamp
        );
    }

    function _tokenTransfer(
        address sender,
        address recipient,
        uint256 amount,
        uint256 tax
    ) private {
        uint256 tTeam = (amount * tax) / 100;
        uint256 tTransferAmount = amount - tTeam;
        _balances[sender] = _balances[sender] - amount;
        _balances[recipient] = _balances[recipient] + tTransferAmount;
        if (tTeam > 0) {
            _balances[address(this)] = _balances[address(this)] + tTeam;
            emit Transfer(sender, address(this), tTeam);
        }
        emit Transfer(sender, recipient, tTransferAmount);
    }

    function disableLimits() external onlyOwner {
        _maxTxAmount = _totalSupply;
        _maxWalletSize = _totalSupply;
    }

    function excludeMultipleAccountsFromFees(
        address[] calldata accounts,
        bool excluded
    ) external onlyOwner {
        for (uint256 i = 0; i < accounts.length; i++) {
            _isExcludedFromFee[accounts[i]] = excluded;
        }
    }

    receive() external payable {}
}