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// ██╔════╝██╔═══██╗████╗  ██║╚══██╔══╝██╔══██╗██╔══██╗██╔════╝╚══██╔══╝    ██╔══██╗╚██╗ ██╔╝
// ██║     ██║   ██║██╔██╗ ██║   ██║   ██████╔╝███████║██║        ██║       ██████╔╝ ╚████╔╝
// ██║     ██║   ██║██║╚██╗██║   ██║   ██╔══██╗██╔══██║██║        ██║       ██╔══██╗  ╚██╔╝
// ╚██████╗╚██████╔╝██║ ╚████║   ██║   ██║  ██║██║  ██║╚██████╗   ██║       ██████╔╝   ██║
//  ╚═════╝ ╚═════╝ ╚═╝  ╚═══╝   ╚═╝   ╚═╝  ╚═╝╚═╝  ╚═╝ ╚═════╝   ╚═╝       ╚═════╝    ╚═╝
//

// ██████╗ ██╗      ██████╗  ██████╗██╗  ██╗███████╗ █████╗ ███████╗██╗   ██╗    ██████╗ ██████╗ ███╗   ███╗
// ██╔══██╗██║     ██╔═══██╗██╔════╝██║ ██╔╝██╔════╝██╔══██╗██╔════╝██║   ██║   ██╔════╝██╔═══██╗████╗ ████║
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// ██╔══██╗██║     ██║   ██║██║     ██╔═██╗ ╚════██║██╔══██║██╔══╝  ██║   ██║   ██║     ██║   ██║██║╚██╔╝██║
// ██████╔╝███████╗╚██████╔╝╚██████╗██║  ██╗███████║██║  ██║██║     ╚██████╔╝██╗╚██████╗╚██████╔╝██║ ╚═╝ ██║
// ╚═════╝ ╚══════╝ ╚═════╝  ╚═════╝╚═╝  ╚═╝╚══════╝╚═╝  ╚═╝╚═╝      ╚═════╝ ╚═╝ ╚═════╝ ╚═════╝ ╚═╝     ╚═╝
//

/**
 * Disclaimer: 
 *  BlockSAFU, as a developer assigned by the project owner for writing Solidity smart contracts. 
 *  While BlockSAFU strives to create secure smart contracts for project owners and investors, 
 *  it holds no responsibility for any investment losses or risks resulting from actions taken by the project owner.
**/

// SPDX-License-Identifier: MIT

pragma solidity 0.8.20;

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());
    }

    function owner() public view virtual returns (address) {
        return _owner;
    }

    modifier onlyOwner() {
        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 IUniswapV2Factory {
    event PairCreated(address indexed token0, address indexed token1, address pair, uint);

    function feeTo() external view returns (address);
    function feeToSetter() external view returns (address);
    function getPair(address tokenA, address tokenB) external view returns (address pair);
    function allPairs(uint) external view returns (address pair);
    function allPairsLength() external view returns (uint);
    function createPair(address tokenA, address tokenB) external returns (address pair);
    function setFeeTo(address) external;
    function setFeeToSetter(address) external;
}

interface IUniswapV2Pair {
    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint value);

    function name() external pure returns (string memory);
    function symbol() external pure returns (string memory);
    function decimals() external pure returns (uint8);
    function totalSupply() external view returns (uint);
    function balanceOf(address owner) external view returns (uint);
    function allowance(address owner, address spender) external view returns (uint);

    function approve(address spender, uint value) external returns (bool);
    function transfer(address to, uint value) external returns (bool);
    function transferFrom(address from, address to, uint value) external returns (bool);

    function DOMAIN_SEPARATOR() external view returns (bytes32);
    function PERMIT_TYPEHASH() external pure returns (bytes32);
    function nonces(address owner) external view returns (uint);

    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;

    event Mint(address indexed sender, uint amount0, uint amount1);
    event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
    event Swap(
        address indexed sender,
        uint amount0In,
        uint amount1In,
        uint amount0Out,
        uint amount1Out,
        address indexed to
    );
    event Sync(uint112 reserve0, uint112 reserve1);

    function MINIMUM_LIQUIDITY() external pure returns (uint);
    function factory() external view returns (address);
    function token0() external view returns (address);
    function token1() external view returns (address);
    function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
    function price0CumulativeLast() external view returns (uint);
    function price1CumulativeLast() external view returns (uint);
    function kLast() external view returns (uint);

    function mint(address to) external returns (uint liquidity);
    function burn(address to) external returns (uint amount0, uint amount1);
    function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
    function skim(address to) external;
    function sync() external;

    function initialize(address, address) external;
}

interface IUniswapV2Router01 {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint amountADesired,
        uint amountBDesired,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB, uint liquidity);
    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB);
    function removeLiquidityETH(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountToken, uint amountETH);
    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountA, uint amountB);
    function removeLiquidityETHWithPermit(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountToken, uint amountETH);
    function swapExactTokensForTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapTokensForExactTokens(
        uint amountOut,
        uint amountInMax,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);
    function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);
    function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);
    function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);

    function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
    function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
    function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
    function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
    function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}

interface IUniswapV2Router02 is IUniswapV2Router01 {
    function removeLiquidityETHSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountETH);
    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountETH);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable;
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
}

interface IERC20 {
    function totalSupply() external view returns (uint256);
    function balanceOf(address who) external view returns (uint256);
    function allowance(address owner, address spender) external view returns (uint256);
    function transfer(address to, uint256 value) external returns (bool);
    function approve(address spender, uint256 value) external returns (bool);
    function transferFrom(address from, address to, uint256 value) external returns (bool);

    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);

}

interface IERC20Metadata is IERC20 {
    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint8);
}

contract ERC20 is Context, IERC20, IERC20Metadata {

    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _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);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()] - 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) {
        require(_allowances[_msgSender()][spender] >= subtractedValue, "ERC20: decreased allowance below zero");
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] - 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");
        _beforeTokenTransfer(sender, recipient, amount);
        require(_balances[sender] >= amount, "ERC20: transfer amount exceeds balance");
        _balances[sender] -= amount;
        _balances[recipient] += amount;
        emit Transfer(sender, recipient, amount);
    }

    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");
        _beforeTokenTransfer(address(0), account, amount);
        _totalSupply += amount;
        _balances[account] += amount;
        emit Transfer(address(0), account, amount);
    }

    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");
        _beforeTokenTransfer(account, address(0), amount);
        require(_balances[account] >= amount, "ERC20: burn amount exceeds balance");
        _balances[account] -= amount;
        _totalSupply -= amount;
        emit Transfer(account, address(0), 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);
    }

    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}


contract StarterPool is ERC20, Ownable {

    uint256 public feeMarketingOnBuy;
    uint256 public feeMarketingOnSell;

    uint256 public feeBurnOnBuy;
    uint256 public feeBurnOnSell;

    address public marketingWallet;

    bool public feeBuyEnabled;
    bool public feeSellEnabled;

    IUniswapV2Router02 public uniswapV2Router;
    address public  uniswapV2Pair;

    address public usdtAddress;
    
    address public constant DEAD = 0x000000000000000000000000000000000000dEaD;

    bool    public swapping;
    uint256 public swapTokensAtAmount;
    bool public swapEnabled;

    mapping (address => bool) private _isExcludedFromFees;
    mapping (address => bool) public automatedMarketMakerPairs;

    event ToggleFeeBuy(bool state);
    event ToggleFeeSell(bool state);

    event ExcludeFromFees(address indexed account, bool isExcluded);
    event UpdateMarketingWallet(address wallet);
    event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);

    event SendMarketing(uint256 bnbSend);
    event UpdateUniswapV2Router(address indexed newAddress, address indexed oldAddress);

    event UpdateFeeBuy(uint256 marketing, uint256 burn);
    event UpdateFeeSell(uint256 marketing, uint256 burn);

    modifier inSwap {
        swapping = true;
        _;
        swapping = false;
    }

    constructor() payable ERC20("Starterpool", "SPOL") {
        _transferOwnership(0x0492F4C8Fe50080c92D0159C32EbC7b1a2891845);
        feeMarketingOnBuy = 2;
        feeMarketingOnSell = 2;

        feeBurnOnBuy = 1;
        feeBurnOnSell = 1;

        feeBuyEnabled = true;
        feeSellEnabled = true;

        swapEnabled = true;

        usdtAddress = 0xdAC17F958D2ee523a2206206994597C13D831ec7;

        marketingWallet = 0x59b14b1c5925D4E6Efb549EFd860cc95b9972766;

        IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        address _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
            .createPair(address(this), usdtAddress);
            
        uniswapV2Pair   = _uniswapV2Pair;
        _setAutomatedMarketMakerPair(_uniswapV2Pair, true);

        uniswapV2Router = _uniswapV2Router;
        

        _approve(address(this), address(uniswapV2Router), type(uint256).max);

        

        _isExcludedFromFees[owner()] = true;
        _isExcludedFromFees[DEAD] = true;
        _isExcludedFromFees[address(this)] = true;
        _isExcludedFromFees[marketingWallet] = true;
        _isExcludedFromFees[address(_uniswapV2Router)] = true;
    
        _mint(owner(), 10_000_000 * (10 ** 18));
        swapTokensAtAmount = totalSupply() / 100_000;
    }

    receive() external payable {}

    fallback() external payable {}

    function getRouterAddress() public view returns (address) {
        if (block.chainid == 56) {
            return 0x10ED43C718714eb63d5aA57B78B54704E256024E;
        } else if (block.chainid == 97) {
            return 0xD99D1c33F9fC3444f8101754aBC46c52416550D1;
        } else {
           return 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
        }
    }

    function claimStuckTokens(address token) external onlyOwner {
        require(token != address(this), "Cannot Claim Native Token");
        if (token == address(0x0)) {
            payable(msg.sender).transfer(address(this).balance);
            return;
        }
        IERC20 ERC20token = IERC20(token);
        uint256 balance = ERC20token.balanceOf(address(this));
        ERC20token.transfer(msg.sender, balance);
    }

    function isContract(address account) internal view returns (bool) {
        return account.code.length > 0;
    }

    function sendBNB(address payable recipient, uint256 amount) internal returns(bool){
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        return success;
    }

    function _setAutomatedMarketMakerPair(address pair, bool value) private {
        require(automatedMarketMakerPairs[pair] != value, "Automated market maker pair is already set to that value");
        automatedMarketMakerPairs[pair] = value;

        emit SetAutomatedMarketMakerPair(pair, value);
    }

    function toggleFeeBuy(bool state) external onlyOwner {
        require(feeBuyEnabled != state,"Already this state");
        feeBuyEnabled = state;
        emit ToggleFeeBuy(state);
    }

    function toggleFeeSell(bool state) external onlyOwner {
        require(feeSellEnabled != state,"Already this state");
        feeSellEnabled = state;
        emit ToggleFeeSell(state);
    }

    function excludeFromFees(address account, bool excluded) external onlyOwner {
        require(_isExcludedFromFees[account] != excluded, "Account is already set to that state");
        _isExcludedFromFees[account] = excluded;

        emit ExcludeFromFees(account, excluded);
    }

    function isExcludedFromFees(address account) public view returns(bool) {
        return _isExcludedFromFees[account];
    }

    function updateMarketingAddress(address wallet) external onlyOwner {
        require(wallet != marketingWallet,"Already set this wallet");
        require(!isContract(wallet),"Wallet cannot contract address");
        marketingWallet = wallet;
        emit UpdateMarketingWallet(wallet);
    }

    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");

        if(amount == 0) {
            super._transfer(from, to, 0);
            return;
        }

        if(shouldSwapback(to)) {
            swapback();
        }

        bool takeFee = !swapping;

        if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
            takeFee = false;
        }

        if(from != uniswapV2Pair && to != uniswapV2Pair && takeFee) {
            takeFee = false;
        }

        if(takeFee) {
            uint256 totalDeduction = 0;
            if(from == uniswapV2Pair && feeBuyEnabled) {
                totalDeduction = feeMarketingOnBuy;
            } else if(to == uniswapV2Pair && feeSellEnabled) {
                totalDeduction = feeMarketingOnSell;
            } 
            uint256 fees = amount * totalDeduction / 100;
            
            amount = amount - fees;

            super._transfer(from, address(this), fees);
        }

        super._transfer(from, to, amount);
    }

    function shouldSwapback(address to) internal view returns(bool)
    {
        return (
            balanceOf(address(this)) >= swapTokensAtAmount &&
            !swapping &&
            automatedMarketMakerPairs[to] &&
            swapEnabled && 
            (feeMarketingOnBuy + feeMarketingOnSell) + (feeBurnOnBuy + feeBurnOnSell) > 0
        );
    }

    function swapback() public inSwap {
        uint256 amountForSwapback = balanceOf(address(this));
        if(amountForSwapback > 0) {
            uint256 totalFee =  (feeBurnOnBuy + feeBurnOnSell) + (feeMarketingOnBuy + feeMarketingOnSell);
            uint256 totalFeeBurn = (feeBurnOnBuy + feeBurnOnSell);
            if(totalFeeBurn > 0){
              uint256 amountBurn = totalFeeBurn * amountForSwapback / totalFee;
              _burn(address(this), amountBurn);
              amountForSwapback -= amountBurn;
            }

            address[] memory path = new address[](2);
            path[0] = address(this);
            path[1] = usdtAddress;
            uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(
                amountForSwapback,
                0,
                path,
                marketingWallet,
                block.timestamp);
            
        }
    }

    function setSwapEnabled(bool _enabled) external onlyOwner{
        require(swapEnabled != _enabled, "swapEnabled already at this state.");
        swapEnabled = _enabled;
    }

    function setSwapTokensAtAmount(uint256 newAmount) external onlyOwner{
        require(newAmount > (totalSupply() / 1_000_000), "SwapTokensAtAmount must be greater than 0.001% of total supply");
        swapTokensAtAmount = newAmount;
    }

    function updateFeeBuy(uint256 marketing, uint256 burn) external onlyOwner {
        require(marketing + burn <= 10,"Cannot over than 10%");
        feeMarketingOnBuy = marketing;
        feeBurnOnBuy = burn;
        emit UpdateFeeBuy(marketing, burn);
    }

    function updateFeeSell(uint256 marketing, uint256 burn) external onlyOwner {
        require(marketing + burn <= 10,"Cannot over than 10%");
        feeMarketingOnSell = marketing;
        feeBurnOnSell = burn;
        emit UpdateFeeSell(marketing, burn);
    }
}