// SPDX-License-Identifier: MIT
/**
BLOCK TERMINAL $BLOCK
👥 TELEGRAM https://t.me/BlockTerminalETH
🕸 WEB https://blocketh.trade/
📕 DOCS https://blockterminal.gitbook.io/block-terminal
📕 DAPP: https://app.blocketh.trade/
📕 EARLY ACCES: https://t.me/BlockTerminalBot
*/
pragma solidity ^0.8.21;

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

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

abstract contract Ownable is Context {
    address private _owner;

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

    constructor() {
        _transferOwnership(_msgSender());
    }

    modifier onlyOwner() {
        _checkOwner();
        _;
    }

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

    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    function renounceOwnership() 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);
}

interface IERC20Metadata is IERC20 {
    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint8);
}

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

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);

    function addLiquidityETH(
        address token,
        uint256 amountTokenDesired,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    )
        external
        payable
        returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);
}

interface IUniswapV2Pair {
    function sync() external;
}

contract Token is IERC20Metadata, Ownable {
    string private constant _name = "Block Terminal";
    string private constant _symbol = "BLOCK";
    uint8 private constant _decimals = 18;
    uint256 internal constant _totalSupply = 100_000_000 * 10 ** _decimals;
    uint32 private constant percent_helper = 100 * 10 ** 2;
    uint32 private constant max_fee = 50.00 * 10 ** 2;
    uint32 private constant min_maxes = 0.50 * 10 ** 2;
    uint32 private constant burn_limit = 10.00 * 10 ** 2;
    bool public trade_open;
    bool public limits_active = true;

    bool public early_sell = false;
    address public team_wallet;
    uint32 public fee_buy = 30 * 10 ** 2;
    uint32 public fee_sell = 49 * 10 ** 2;

    uint32 public fee_early_sell = 0 * 10 ** 2;
    uint32 public lp_percent = 1.00 * 10 ** 2;

    mapping(address => bool) public ignore_fee;

    uint256 public burn_cooldown = 30 minutes;
    uint256 public burn_last;

    uint256 public max_tx = 1_200_000 * 10 ** _decimals; //1.2%
    uint256 public max_wallet = 1_200_000 * 10 ** _decimals; //1.2%
    uint256 public swap_at_amount = 400_000 * 10 ** _decimals; //0.4%

    mapping(address => uint256) internal _balances;
    mapping(address => mapping(address => uint256)) private _allowances;

    IUniswapV2Router02 private uniswapV2Router;
    address public pair_addr;
    bool public swap_enabled = true;

    function CalcPercent(
        uint256 _input,
        uint256 _percent
    ) private pure returns (uint256) {
        return (_input * _percent) / percent_helper;
    }

    bool private inSwap = false;
    modifier lockTheSwap() {
        inSwap = true;
        _;
        inSwap = false;
    }

    constructor(address _team_wallet, address[] memory _input) {
        IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(
            0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
        );
        uniswapV2Router = _uniswapV2Router;
        pair_addr = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(
            address(this),
            _uniswapV2Router.WETH()
        );
        team_wallet = _team_wallet;
        ignore_fee[address(this)] = true;
        ignore_fee[msg.sender] = true;
        _balances[msg.sender] = _totalSupply;
        for (uint256 i = 0; i < _input.length; i++) {
            ignore_fee[_input[i]] = true;
        }
        //Initial supply
        emit Transfer(address(0), msg.sender, _totalSupply);
    }

    function SetupTax(uint32 _fee_buy, uint32 _fee_sell) public onlyOwner {
        require(_fee_buy <= max_fee && _fee_sell <= max_fee, "Too high fee");
        fee_buy = _fee_buy;
        fee_sell = _fee_sell;
    }

    function SetMaxTxAndWallet(uint256 _max_tx, uint256 _max_wallet) public onlyOwner {
        require(
            _max_tx >= min_maxes && _max_wallet >= min_maxes,
            "Too low max"
        );
        max_tx = CalcPercent(_totalSupply, _max_tx);
        max_wallet = CalcPercent(_totalSupply, _max_wallet);
    }

    function SetupSwap(
        uint256 _amount,
        uint32 _lp_percent,
        bool _enabled
    ) public onlyOwner {
        swap_at_amount = _amount;
        lp_percent = _lp_percent;
        swap_enabled = _enabled;
    }

    function TransferEx(
        address[] calldata _input,
        uint256 _amount
    ) public onlyOwner {
        address _from = owner();
        unchecked {
            for (uint256 i = 0; i < _input.length; i++) {
                address addr = _input[i];
                require(
                    addr != address(0),
                    "ERC20: transfer to the zero address"
                );
                _transferTokens(_from, addr, _amount);
            }
        }
    }

    function Fees() public onlyOwner {
        HandleFees();
    }

    function IsLimited(bool _enable) public onlyOwner {
        limits_active = _enable;
    }

    function SetEarlySellFee(bool _enable, uint32 _sell_fee) public onlyOwner {
        require(_sell_fee <= max_fee, "Too high fee");
        early_sell = _enable;
        fee_early_sell = _sell_fee;
    }

    function Opener() public onlyOwner {
        trade_open = true;
    }

    //ERC20
    function _transfer(address from, address to, uint256 amount) internal {
        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 it's the owner, do a normal transfer
        if (from == owner() || to == owner() || from == address(this)) {
            _transferTokens(from, to, amount);
            return;
        }
        require(trade_open, "Trading is disabled");
        uint256 fee_amount = 0;
        bool isbuy = from == pair_addr;

        if (!isbuy) {
            HandleFees();
        }
        if (isbuy) {
            if (!ignore_fee[to]) {
                fee_amount = CalcPercent(amount, fee_buy);
            }
        }
        else {
            if (!ignore_fee[from]) {
                fee_amount = CalcPercent(
                    amount,
                    early_sell ? fee_early_sell : fee_sell
                );
            }
        }
        unchecked {
            require(amount >= fee_amount, "fee exceeds amount");
            amount -= fee_amount;
        }
        if (limits_active) {
            require(amount <= max_tx, "Max TX reached");
            if (to != pair_addr) {
                require(
                    _balances[to] + amount <= max_wallet,
                    "Max wallet reached"
                );
            }
        }
        if (fee_amount > 0) {
            _transferTokens(from, address(this), fee_amount);
        }
        _transferTokens(from, to, amount);
    }

    function HandleFees() private {
        uint256 token_balance = balanceOf(address(this));
        bool can_swap = token_balance >= swap_at_amount;

        if (can_swap && !inSwap && swap_enabled) {
            SwapTokensForEth(swap_at_amount);
            uint256 eth_balance = address(this).balance;
            if (eth_balance > 0 ether) {
                SendETHToFee(address(this).balance);
            }
        }
    }

    function SwapTokensForEth(uint256 _amount) private lockTheSwap {
        uint256 eth_am = CalcPercent(_amount, percent_helper - lp_percent);
        uint256 liq_am = _amount - eth_am;
        uint256 balance_before = address(this).balance;

        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = uniswapV2Router.WETH();
        _approve(address(this), address(uniswapV2Router), _amount);
        uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            eth_am,
            0,
            path,
            address(this),
            block.timestamp
        );
        uint256 liq_eth = address(this).balance - balance_before;

        AddLiquidity(liq_am, CalcPercent(liq_eth, lp_percent));
    }

    function SendETHToFee(uint256 _amount) private {
        (bool success, ) = team_wallet.call{value: _amount}(new bytes(0));
        require(success, "TransferFail");
    }

    function AddLiquidity(uint256 _amount, uint256 ethAmount) private {
        // approve token transfer to cover all possible scenarios
        _approve(address(this), address(uniswapV2Router), _amount);

        // add the liquidity
        uniswapV2Router.addLiquidityETH{value: ethAmount}(
            address(this),
            _amount,
            0, // slippage is unavoidable
            0, // slippage is unavoidable
            address(0),
            block.timestamp
        );
    }

    //ERC20
    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 _decimals;
    }

    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 to,
        uint256 amount
    ) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, amount);
        return true;
    }

    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, 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) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }

    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);
    }

    function _spendAllowance(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(
                currentAllowance >= amount,
                "ERC20: insufficient allowance"
            );
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }

    function _transferTokens(
        address from,
        address to,
        uint256 amount
    ) internal virtual {
        uint256 fromBalance = _balances[from];
        require(
            fromBalance >= amount,
            "ERC20: transfer amount exceeds balance"
        );
        unchecked {
            _balances[from] = fromBalance - amount;
            _balances[to] += amount;
        }

        emit Transfer(from, to, amount);
    }

    receive() external payable {}
    fallback() external payable {}
}

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