/*

BillyDoge
bDoge is tribute to real DOGE developer https://twitter.com/BillyM2k
millions of life changed because of DOGE 

Concept:

bDOGE every transactions taxed at 5%
3% of every transactions will go to DOGE REAL DEV BILLY (bDOGE marketer)
you can cross check wallet address at Bily website: https://www.billym2k.net/tipjar
Marketing Address set to billy ETH addres: 0x2218e854019D3Ac7989333470E8CF7BDA8b930F3
i think no other in this world can market bDOGE better than billy himself
5% of the supply also sent to Billy address: 0x2218e854019D3Ac7989333470E8CF7BDA8b930F3

1% goes to build liquidity
1% goes to devlopment of bDOGE

disclaimer: I am in no way connected with Billy directly or indirectly, 
But yes if Billy praises us and market for us would like to meet 
billy personally and thanks him for changing millions of life by creating DOGE

social: https://twitter.com/bDOGEerc
please dont look for TG and website i dont have made any for now !

billy: lets make another set of new millionaires ! good luck love you all !

*/
// SPDX-License-Identifier:MIT
pragma solidity ^0.8.10;

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
    );
}

// Dex Factory contract interface
interface IDexFactory {
    function createPair(address tokenA, address tokenB)
        external
        returns (address pair);
}

// Dex Router contract interface
interface IDexRouter {
    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
        );

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;
}

abstract contract Context {
    function _msgSender() internal view virtual returns (address payable) {
        return payable(msg.sender);
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(
        address indexed previousOwner,
        address indexed newOwner
    );

    constructor() {
        _owner = _msgSender();
        emit OwnershipTransferred(address(0), _owner);
    }

    function owner() public view returns (address) {
        return _owner;
    }

    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = payable(address(0));
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(
            newOwner != address(0),
            "Ownable: new owner is the zero address"
        );
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

contract bDOGE is Context, IERC20, Ownable {
    using SafeMath for uint256;

    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;

    mapping(address => bool) public isExcludedFromFee;
    mapping(address => bool) public isExcludedFromMaxTxn;
    mapping(address => bool) public isExcludedFromMaxHolding;
    mapping(address => bool) public isBot;

    string private _name = "Billy Doge";
    string private _symbol = "bDOGE";
    uint8 private _decimals = 9;
    uint256 private _totalSupply = 69_69_69_69_69 * 1e9;

    address private constant DEAD = address(0xdead);
    address private constant ZERO = address(0);
    IDexRouter public dexRouter;
    address public dexPair;
    address public marketingWallet;
    address public DevelopmentWallet;
    address public liquidityReceiverWallet;

    uint256 public minTokenToSwap = _totalSupply.div(1e5); // this amount will trigger swap and distribute
    uint256 public maxHoldLimit = _totalSupply.mul(30).div(1000); // this is the max wallet holding limit
    uint256 public maxTxnLimit = _totalSupply.mul(20).div(1000); // this is the max transaction limit
    uint256 public percentDivider = 1000;
    uint256 public snipingTime = 30 seconds;
    uint256 public launchedAt;

    bool public distributeAndLiquifyStatus; // should be true to turn on to liquidate the pool
    bool public feesStatus = true; // enable by default
    bool public trading; // once enable can't be disable afterwards

    uint256 public liquidityFeeOnBuying = 10; // 1% will be added to the liquidity
    uint256 public marketingFeeOnBuying = 30; // 3% will be added to the marketing address
    uint256 public DevelopmentFeeOnBuying = 10; // 1% will be added to the Development address

    uint256 public liquidityFeeOnSelling = 10; // 1% will be added to the liquidity
    uint256 public marketingFeeOnSelling = 30; // 3% will be added to the marketing address
    uint256 public DevelopmentFeeOnSelling = 10; // 1% will be added to the Development address

    uint256 liquidityFeeCounter = 0;
    uint256 marketingFeeCounter = 0;
    uint256 DevelopmentFeeCounter = 0;

    event SwapAndLiquify(
        uint256 tokensSwapped,
        uint256 ethReceived,
        uint256 tokensIntoLiqudity
    );

    constructor() {
        _balances[owner()] = _totalSupply;
        liquidityReceiverWallet = msg.sender;
        marketingWallet = address(0x2218e854019D3Ac7989333470E8CF7BDA8b930F3);
        DevelopmentWallet = address(0x21A6e3738970897921fDF15B98aada71d7D1eDEC);

        IDexRouter _dexRouter = IDexRouter(
            0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
        );
        // Create a dex pair for this new ERC20
        address _dexPair = IDexFactory(_dexRouter.factory()).createPair(
            address(this),
            _dexRouter.WETH()
        );
        dexPair = _dexPair;

        // set the rest of the contract variables
        dexRouter = _dexRouter;

        //exclude owner and this contract from fee
        isExcludedFromFee[owner()] = true;
        isExcludedFromFee[address(this)] = true;

        //exclude owner and this contract from max Txn
        isExcludedFromMaxTxn[owner()] = true;
        isExcludedFromMaxTxn[address(this)] = true;

        //exclude owner and this contract from max hold limit
        isExcludedFromMaxHolding[owner()] = true;
        isExcludedFromMaxHolding[address(this)] = true;
        isExcludedFromMaxHolding[dexPair] = true;
        isExcludedFromMaxHolding[marketingWallet] = true;
        isExcludedFromMaxHolding[DevelopmentWallet] = true;

        emit Transfer(address(0), owner(), _totalSupply);
    }

    //to receive ETH from dexRouter when swapping
    receive() external payable {}

    function name() public view returns (string memory) {
        return _name;
    }

    function symbol() public view returns (string memory) {
        return _symbol;
    }

    function decimals() public view returns (uint8) {
        return _decimals;
    }

    function totalSupply() public view override returns (uint256) {
        return _totalSupply;
    }

    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }

    function transfer(address recipient, uint256 amount)
        public
        override
        returns (bool)
    {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    function allowance(address owner, address spender)
        public
        view
        override
        returns (uint256)
    {
        return _allowances[owner][spender];
    }

    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) {
        _transfer(sender, recipient, amount);
        _approve(
            sender,
            _msgSender(),
            _allowances[sender][_msgSender()].sub(
                amount,
                "bDOGE: transfer amount exceeds allowance"
            )
        );
        return true;
    }

    function increaseAllowance(address spender, uint256 addedValue)
        public
        virtual
        returns (bool)
    {
        _approve(
            _msgSender(),
            spender,
            _allowances[_msgSender()][spender].add(addedValue)
        );
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue)
        public
        virtual
        returns (bool)
    {
        _approve(
            _msgSender(),
            spender,
            _allowances[_msgSender()][spender].sub(
                subtractedValue,
                "bDOGE: decreased allowance or below zero"
            )
        );
        return true;
    }

    function includeOrExcludeFromFee(address account, bool value)
        external
        onlyOwner
    {
        isExcludedFromFee[account] = value;
    }

    function includeOrExcludeFromMaxTxn(address account, bool value)
        external
        onlyOwner
    {
        isExcludedFromMaxTxn[account] = value;
    }

    function includeOrExcludeFromMaxHolding(address account, bool value)
        external
        onlyOwner
    {
        isExcludedFromMaxHolding[account] = value;
    }

    function removeBots(address account)
        external
        onlyOwner
    {
        isBot[account] = false;
    }

    function setMinTokenToSwap(uint256 _amount) external onlyOwner {
        require(_amount > 0,"bDOGE: can't be 0");
        minTokenToSwap = _amount;
    }

    function setMaxHoldLimit(uint256 _amount) external onlyOwner {
        require(_amount >= _totalSupply.mul(5).div(percentDivider), "bDOGE: should be greater than 0.5%");
        maxHoldLimit = _amount;
    }

    function setMaxTxnLimit(uint256 _amount) external onlyOwner {
        require(_amount >= _totalSupply/percentDivider, "bDOGE: should be greater than 0.1%");
        maxTxnLimit = _amount;
    }

    function setBuyFeePercent(uint256 _lwFee, uint256 _marketingFee, uint256 _DevelopmentFee)
        external
        onlyOwner
    {
        marketingFeeOnBuying = _marketingFee;
        DevelopmentFeeOnBuying = _DevelopmentFee;
        liquidityFeeOnBuying = _lwFee;
        require(
            _lwFee.add(_marketingFee).add(_DevelopmentFee) <= percentDivider.div(10),
            "bDOGE: can't be more than 10%"
        );
    }

    function setSellFeePercent(uint256 _lwFee, uint256 _marketingFee, uint256 _DevelopmentFee)
        external
        onlyOwner
    {
        marketingFeeOnSelling = _marketingFee;
        DevelopmentFeeOnSelling = _DevelopmentFee;
        liquidityFeeOnSelling = _lwFee;
        require(
            _lwFee.add(_marketingFee).add(_DevelopmentFee) <= percentDivider.div(10),
            "bDOGE: can't be more than 10%"
        );
    }

    function setDistributionStatus(bool _value) public onlyOwner {
        distributeAndLiquifyStatus = _value;
    }

    function enableOrDisableFees(bool _value) external onlyOwner {
        feesStatus = _value;
    }

    function removeStuckEth(address _receiver) public onlyOwner {
        payable(_receiver).transfer(address(this).balance);
    }

    function updateAddresses(address _marketingWallet, address _DevelopmentWallet, address _liquidityReceiverWallet) external onlyOwner {
        marketingWallet = _marketingWallet;
        DevelopmentWallet = _DevelopmentWallet;
        liquidityReceiverWallet = _liquidityReceiverWallet;
    }

    function enableTrading() external onlyOwner {
        require(!trading, "bDOGE: already enabled");
        trading = true;
        feesStatus = true;
        distributeAndLiquifyStatus = true;
        launchedAt = block.timestamp;
    }

    function totalBuyFeePerTx(uint256 amount) public view returns (uint256) {
        uint256 fee = amount.mul(marketingFeeOnBuying.add(liquidityFeeOnBuying).add(DevelopmentFeeOnBuying)).div(
            percentDivider
        );
        return fee;
    }

    function totalSellFeePerTx(uint256 amount) public view returns (uint256) {
        uint256 fee = amount
            .mul(marketingFeeOnSelling.add(liquidityFeeOnSelling).add(DevelopmentFeeOnSelling))
            .div(percentDivider);
        return fee;
    }

    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) private {
        require(owner != address(0), "bDOGE: approve from the zero address");
        require(spender != address(0), "bDOGE: 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), "bDOGE: transfer from the zero address");
        require(to != address(0), "bDOGE: transfer to the zero address");
        require(amount > 0, "bDOGE: Amount must be greater than zero");
        require(!isBot[from], "bDOGE: Bot detected");

        if (!isExcludedFromMaxTxn[from] && !isExcludedFromMaxTxn[to]) {
            require(amount <= maxTxnLimit, "bDOGE: max txn limit exceeds");

            // trading disable till launch
            if (!trading) {
                require(
                    dexPair != from && dexPair != to,
                    "bDOGE: trading is disable"
                );
            }
            // antibot
            if (
                block.timestamp < launchedAt + snipingTime &&
                from != address(dexRouter)
            ) {
                if (dexPair == from) {
                    isBot[to] = true;
                } else if (dexPair == to) {
                    isBot[from] = true;
                }
            }
        }

        if (!isExcludedFromMaxHolding[to]) {
            require(
                balanceOf(to).add(amount) <= maxHoldLimit,
                "bDOGE: max hold limit exceeds"
            );
        }

        // swap and liquify
        distributeAndLiquify(from, to);

        //indicates if fee should be deducted from transfer
        bool takeFee = true;

        //if any account belongs to isExcludedFromFee account then remove the fee
        if (isExcludedFromFee[from] || isExcludedFromFee[to] || !feesStatus) {
            takeFee = false;
        }

        //transfer amount, it will take tax, burn, liquidity fee
        _tokenTransfer(from, to, amount, takeFee);
    }

    //this method is responsible for taking all fee, if takeFee is true
    function _tokenTransfer(
        address sender,
        address recipient,
        uint256 amount,
        bool takeFee
    ) private {
        if (dexPair == sender && takeFee) {
            uint256 allFee = totalBuyFeePerTx(amount);
            uint256 tTransferAmount = amount.sub(allFee);
            _balances[sender] = _balances[sender].sub(amount,"bDOGE: insufficient balance");
            _balances[recipient] = _balances[recipient].add(tTransferAmount);

            emit Transfer(sender, recipient, tTransferAmount);
            takeTokenFee(sender, allFee);
            setFeeCountersOnBuying(amount);
        } else if (dexPair == recipient && takeFee) {
            uint256 allFee = totalSellFeePerTx(amount);
            uint256 tTransferAmount = amount.sub(allFee);
            _balances[sender] = _balances[sender].sub(amount,"bDOGE: insufficient balance");
            _balances[recipient] = _balances[recipient].add(tTransferAmount);

            emit Transfer(sender, recipient, tTransferAmount);
            takeTokenFee(sender, allFee);
            setFeeCountersOnSelling(amount);
        } else {
            _balances[sender] = _balances[sender].sub(amount,"bDOGE: insufficient balance");
            _balances[recipient] = _balances[recipient].add(amount);

            emit Transfer(sender, recipient, amount);
        }
    }

    function takeTokenFee(address sender, uint256 amount) private {
        _balances[address(this)] = _balances[address(this)].add(amount);

        emit Transfer(sender, address(this), amount);
    }

    function setFeeCountersOnBuying(uint256 amount) private {
        liquidityFeeCounter += amount.mul(liquidityFeeOnBuying).div(
            percentDivider
        );
        marketingFeeCounter += amount.mul(marketingFeeOnBuying).div(percentDivider);
        DevelopmentFeeCounter += amount.mul(DevelopmentFeeOnBuying).div(percentDivider);
    }

    function setFeeCountersOnSelling(uint256 amount) private {
        liquidityFeeCounter += amount.mul(liquidityFeeOnSelling).div(
            percentDivider
        );
        marketingFeeCounter += amount.mul(marketingFeeOnSelling).div(percentDivider);
        DevelopmentFeeCounter += amount.mul(DevelopmentFeeOnSelling).div(percentDivider);
    }

    function distributeAndLiquify(address from, address to) private {
        // is the token balance of this contract address over the min number of
        // tokens that we need to initiate a swap + liquidity lock?
        // also, don't get caught in a circular liquidity event.
        // also, don't swap & liquify if sender is Dex pair.
        uint256 contractTokenBalance = balanceOf(address(this));

        bool shouldSell = contractTokenBalance >= minTokenToSwap;

        if (
            shouldSell &&
            from != dexPair &&
            distributeAndLiquifyStatus &&
            !(from == address(this) && to == address(dexPair)) // swap 1 time
        ) {
            // approve contract
            _approve(address(this), address(dexRouter), contractTokenBalance);

            uint256 halfLiquidity = liquidityFeeCounter.div(2);
            uint256 otherHalfLiquidity = liquidityFeeCounter.sub(halfLiquidity);

            uint256 tokenAmountToBeSwapped = contractTokenBalance.sub(
                otherHalfLiquidity
            );

            uint256 balanceBefore = address(this).balance;

            // now is to lock into liquidty pool
            Utils.swapTokensForEth(address(dexRouter), tokenAmountToBeSwapped);

            uint256 deltaBalance = address(this).balance.sub(balanceBefore);
            uint256 ethToBeAddedToLiquidity = deltaBalance
                .mul(halfLiquidity)
                .div(tokenAmountToBeSwapped);
            uint256 ethFormarketing = deltaBalance.mul(marketingFeeCounter).div(
                tokenAmountToBeSwapped
            );
            uint256 ethForDevelopment = deltaBalance.sub(ethToBeAddedToLiquidity).sub(
                ethFormarketing
            );

            // add liquidity to Dex
            if (ethToBeAddedToLiquidity > 0) {
                Utils.addLiquidity(
                    address(dexRouter),
                    liquidityReceiverWallet,
                    otherHalfLiquidity,
                    ethToBeAddedToLiquidity
                );

                emit SwapAndLiquify(
                    halfLiquidity,
                    ethToBeAddedToLiquidity,
                    otherHalfLiquidity
                );
            }

            // sending eth to marketing wallet
            if (ethFormarketing > 0) payable(marketingWallet).transfer(ethFormarketing);

            // sending eth to development wallet
            if (ethForDevelopment > 0) payable(DevelopmentWallet).transfer(ethForDevelopment);

            // Reset all fee counters
            liquidityFeeCounter = 0;
            marketingFeeCounter = 0;
            DevelopmentFeeCounter = 0;
        }
    }
}

// Library for doing a swap on Dex
library Utils {
    using SafeMath for uint256;

    function swapTokensForEth(address routerAddress, uint256 tokenAmount)
        internal
    {
        IDexRouter dexRouter = IDexRouter(routerAddress);

        // generate the Dex pair path of token -> weth
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = dexRouter.WETH();

        // make the swap
        dexRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0, // accept any amount of ETH
            path,
            address(this),
            block.timestamp + 300
        );
    }

    function addLiquidity(
        address routerAddress,
        address owner,
        uint256 tokenAmount,
        uint256 ethAmount
    ) internal {
        IDexRouter dexRouter = IDexRouter(routerAddress);

        // add the liquidity
        dexRouter.addLiquidityETH{value: ethAmount}(
            address(this),
            tokenAmount,
            0, // slippage is unavoidable
            0, // slippage is unavoidable
            owner,
            block.timestamp + 300
        );
    }
}

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) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        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;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}