/**

Baby Bone - bBONE

Baby Bone is the first token that rewards it’s holders with $BONE token rewards!

BONE has 250,000,000 tokens in circulation and is a Governance token which allows the #ShibArmy to vote on upcoming proposals on the Doggy DAO.
The gas token of Shibarium, the layer-2 blockchain being developed by the $SHIB team, will be BONE.

Holders of bBONE will enjoy constant $BONE token rewards and $bBONE tokens bought with the buyback wallet will be used to bridge Baby Bone to Shibarium when it goes live alongside many other utilities.

Join the Baby Bone Army and get early access to Shibarium by filling your wallets with BONE rewards and remember … The higher the market capitalization is, the higher the rewards are!

Tokenomics:
(Name: Baby Bone)
(Symbol: bBONE)
Total Supply: 2.500.000.000
(team: 6%)
Tax on Buy: 6%
- 3% $BONE rewards
- 3% Marketing/Buybacks
Tax on Sell: 8% (16% first 15 mins)
- 5% $BONE rewards
- 3% Marketing/Buybacks

Ownership will be renounced, the twitter channel will be handled by the team:
https://twitter.com/babyboneerc20

To drive natural community growth, we advise the community to create a telegram chat to communicate amongst themselves, we recommend using the following link:
https://t.me/babyboneerc20

In the case another was used, the chat link will be available on the website and twitter channel, we will release the website after launch, time undetermined.



*/

// SPDX-License-Identifier: Unlicensed

pragma solidity 0.8.13;

/**
 * Standard SafeMath, stripped down to just add/sub/mul/div
 */
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) {
        // Solidity only automatically asserts when dividing by 0
        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;
    }
}

/**
 * ERC20 standard interface.
 */
interface IERC20 {
    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);
}

/**
 * Allows for contract ownership along with multi-address authorization
 */
abstract contract Auth {
    address internal owner;

    constructor(address _owner) {
        owner = _owner;
    }

    /**
     * Function modifier to require caller to be contract deployer
     */
    modifier onlyOwner() {
        require(isOwner(msg.sender), "!Owner"); _;
    }

    /**
     * Check if address is owner
     */
    function isOwner(address account) public view returns (bool) {
        return account == owner;
    }

    /**
     * Transfer ownership to new address. Caller must be deployer. Leaves old deployer authorized
     */
    function transferOwnership(address payable adr) public onlyOwner {
        owner = adr;
        emit OwnershipTransferred(adr);
    }

    event OwnershipTransferred(address owner);
}

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;
}

interface IDividendDistributor {
    function setShare(address shareholder, uint256 amount) external;
    function deposit(uint256 amount) external;
    function claimDividend(address shareholder) external;
    function getDividendsClaimedOf (address shareholder) external returns (uint256);
}

contract DividendDistributor is IDividendDistributor {
    using SafeMath for uint256;

    address public _token;
    address public _owner;

    address public immutable BONE = address(0x9813037ee2218799597d83D4a5B6F3b6778218d9); //UNI


    struct Share {
        uint256 amount;
        uint256 totalExcluded;
        uint256 totalClaimed;
    }

    address[] private shareholders;
    mapping (address => uint256) private shareholderIndexes;

    mapping (address => Share) public shares;

    uint256 public totalShares;
    uint256 public totalDividends;
    uint256 public totalClaimed;
    uint256 public dividendsPerShare;
    uint256 private dividendsPerShareAccuracyFactor = 10 ** 36;

    modifier onlyToken() {
        require(msg.sender == _token); _;
    }
    
    modifier onlyOwner() {
        require(msg.sender == _owner); _;
    }

    constructor (address owner) {
        _token = msg.sender;
        _owner = owner;
    }

    receive() external payable { }

    function setShare(address shareholder, uint256 amount) external override onlyToken {
        if(shares[shareholder].amount > 0){
            distributeDividend(shareholder);
        }

        if(amount > 0 && shares[shareholder].amount == 0){
            addShareholder(shareholder);
        }else if(amount == 0 && shares[shareholder].amount > 0){
            removeShareholder(shareholder);
        }

        totalShares = totalShares.sub(shares[shareholder].amount).add(amount);
        shares[shareholder].amount = amount;
        shares[shareholder].totalExcluded = getCumulativeDividends(shares[shareholder].amount);
    }

    function deposit(uint256 amount) external override onlyToken {
        
        if (amount > 0) {        
            totalDividends = totalDividends.add(amount);
            dividendsPerShare = dividendsPerShare.add(dividendsPerShareAccuracyFactor.mul(amount).div(totalShares));
        }
    }

    function distributeDividend(address shareholder) internal {
        if(shares[shareholder].amount == 0){ return; }

        uint256 amount = getClaimableDividendOf(shareholder);
        if(amount > 0){
            totalClaimed = totalClaimed.add(amount);
            shares[shareholder].totalClaimed = shares[shareholder].totalClaimed.add(amount);
            shares[shareholder].totalExcluded = getCumulativeDividends(shares[shareholder].amount);
            IERC20(BONE).transfer(shareholder, amount);
        }
    }

    function claimDividend(address shareholder) external override onlyToken {
        distributeDividend(shareholder);
    }

    function getClaimableDividendOf(address shareholder) public view returns (uint256) {
        if(shares[shareholder].amount == 0){ return 0; }

        uint256 shareholderTotalDividends = getCumulativeDividends(shares[shareholder].amount);
        uint256 shareholderTotalExcluded = shares[shareholder].totalExcluded;

        if(shareholderTotalDividends <= shareholderTotalExcluded){ return 0; }

        return shareholderTotalDividends.sub(shareholderTotalExcluded);
    }

    function getCumulativeDividends(uint256 share) internal view returns (uint256) {
        return share.mul(dividendsPerShare).div(dividendsPerShareAccuracyFactor);
    }

    function addShareholder(address shareholder) internal {
        shareholderIndexes[shareholder] = shareholders.length;
        shareholders.push(shareholder);
    }

    function removeShareholder(address shareholder) internal {
        shareholders[shareholderIndexes[shareholder]] = shareholders[shareholders.length-1];
        shareholderIndexes[shareholders[shareholders.length-1]] = shareholderIndexes[shareholder];
        shareholders.pop();
    }
    
    function manualSend(uint256 amount, address holder) external onlyOwner {
        uint256 contractETHBalance = address(this).balance;
        payable(holder).transfer(amount > 0 ? amount : contractETHBalance);
    }


    function getDividendsClaimedOf (address shareholder) external view returns (uint256) {
        require (shares[shareholder].amount > 0, "You're not a bBONE shareholder!");
        return shares[shareholder].totalClaimed;
    }

    }

contract bBONE is IERC20, Auth {
    using SafeMath for uint256;

    address private WETH;
    address private DEAD = 0x000000000000000000000000000000000000dEaD;
    address private ZERO = 0x0000000000000000000000000000000000000000;

    address public immutable BONE = address(0x9813037ee2218799597d83D4a5B6F3b6778218d9); 

    string private constant  _name = "BabyBone";
    string private constant _symbol = "bBONE";
    uint8 private constant _decimals = 9;

    uint256 private _totalSupply = 2500000000 * (10 ** _decimals);
    uint256 private _maxTxAmountBuy = _totalSupply;
    

    mapping (address => uint256) private _balances;
    mapping (address => mapping (address => uint256)) private _allowances;
    mapping (address => uint256) private cooldown;

    mapping (address => bool) private isFeeExempt;
    mapping (address => bool) private isDividendExempt;
    mapping (address => bool) private isBot;
            
    uint256 private totalFee = 8;
    uint256 private feeDenominator = 100;

    address payable public marketingWallet = payable(0x80D6270192Dd3E495dD71041E5CC566aBd448a1C);

    IDEXRouter public router;
    address public pair;

    uint256 public launchedAt;
    bool private tradingOpen;
    bool private buyLimit = true;
    uint256 private maxBuy = 25000001 * (10 ** _decimals);
    uint256 public numTokensSellToAddToLiquidity = 12000000 * 10**9;

    DividendDistributor private distributor;    
    
    bool public blacklistEnabled = false;
    bool private inSwap;
    modifier swapping() { inSwap = true; _; inSwap = false; }

    constructor (
        address _owner        
    ) Auth(_owner) {
        router = IDEXRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
            
        WETH = router.WETH();
        
        pair = IDEXFactory(router.factory()).createPair(WETH, address(this));
        
        _allowances[address(this)][address(router)] = type(uint256).max;

        distributor = new DividendDistributor(_owner);

        isFeeExempt[_owner] = true;
        isFeeExempt[marketingWallet] = true;             
              
        isDividendExempt[pair] = true;
        isDividendExempt[address(this)] = true;
        isDividendExempt[DEAD] = true;        

        _balances[_owner] = _totalSupply;
    
        emit Transfer(address(0), _owner, _totalSupply);
    }

    receive() external payable { }

    function totalSupply() external view override returns (uint256) { return _totalSupply; }
    function decimals() external pure override returns (uint8) { return _decimals; }
    function symbol() external pure override returns (string memory) { return _symbol; }
    function name() external pure override returns (string memory) { return _name; }
    function getOwner() external view override returns (address) { return owner; }
    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, type(uint256).max);
    }

    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] != type(uint256).max){
            _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 (sender!= owner && recipient!= owner) require(tradingOpen, "Trading not yet enabled."); //transfers disabled before openTrading
        if (blacklistEnabled) {
            require (!isBot[sender] && !isBot[recipient], "Bot!");
        }
        if (buyLimit) { 
            if (sender!=owner && recipient!= owner) require (amount<=maxBuy, "Too much sir");        
        }

        if (sender == pair && recipient != address(router) && !isFeeExempt[recipient]) {
            require (cooldown[recipient] < block.timestamp);
            cooldown[recipient] = block.timestamp + 60 seconds;
            if (block.number <= (launchedAt + 1)) { 
                isBot[recipient] = true;
                isDividendExempt[recipient] = true; 
            }
        }
       
        if(inSwap){ return _basicTransfer(sender, recipient, amount); }      

        uint256 contractTokenBalance = balanceOf(address(this));

        bool overMinTokenBalance = contractTokenBalance >= numTokensSellToAddToLiquidity;
    
        bool shouldSwapBack = (overMinTokenBalance && recipient==pair && balanceOf(address(this)) > 0);
        if(shouldSwapBack){ swapBack(); }

        _balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");

        uint256 amountReceived = shouldTakeFee(sender, recipient) ? takeFee(sender, amount) : amount;
        
        _balances[recipient] = _balances[recipient].add(amountReceived);

        if(sender != pair && !isDividendExempt[sender]){ try distributor.setShare(sender, _balances[sender]) {} catch {} }
        if(recipient != pair && !isDividendExempt[recipient]){ try distributor.setShare(recipient, _balances[recipient]) {} catch {} }

        emit Transfer(sender, recipient, amountReceived);
        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 shouldTakeFee(address sender, address recipient) internal view returns (bool) {
        return ( !(isFeeExempt[sender] || isFeeExempt[recipient]) &&  (sender == pair || recipient == pair) );
   }

    function takeFee(address sender, uint256 amount) internal returns (uint256) {
        uint256 feeAmount;
        feeAmount = amount.mul(totalFee).div(feeDenominator);
        _balances[address(this)] = _balances[address(this)].add(feeAmount);
        emit Transfer(sender, address(this), feeAmount);   

        return amount.sub(feeAmount);
    }

   
    function swapBack() internal swapping {

        uint256 amountToSwap = balanceOf(address(this));        

        swapTokensForEth(amountToSwap.div(2));
        swapTokensForBONE(amountToSwap.div(2));

        uint256 dividends = IERC20(BONE).balanceOf(address(this));

        bool success = IERC20(BONE).transfer(address(distributor), dividends);

        if (success) {
            distributor.deposit(dividends);            
        }
             
        payable(marketingWallet).transfer(address(this).balance);        
    }

    

    function swapTokensForBONE(uint256 tokenAmount) private {

        address[] memory path = new address[](3);
        path[0] = address(this);
        path[1] = WETH;
        path[2] = BONE;

        // make the swap
        router.swapExactTokensForTokensSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(this),
            block.timestamp
        );
    }

    function swapTokensForEth(uint256 tokenAmount) private {

        // generate the uniswap pair path of token -> weth
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = WETH;

        // make the swap
        router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0, // accept any amount of ETH
            path,
            address(this),
            block.timestamp
        );
    }

    function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
        
        // add the liquidity
        router.addLiquidityETH{value: ethAmount}(
            address(this),
            tokenAmount,
            0, // slippage is unavoidable
            0, // slippage is unavoidable
            owner,
            block.timestamp
        );
    }

    
    function openTrading() external onlyOwner {
        launchedAt = block.number;
        tradingOpen = true;
    }    
  
    
    function setBot(address _address, bool toggle) external onlyOwner {
        isBot[_address] = toggle;
        _setIsDividendExempt(_address, toggle);
    }
    
    
    function _setIsDividendExempt(address holder, bool exempt) internal {
        require(holder != address(this) && holder != pair);
        isDividendExempt[holder] = exempt;
        if(exempt){
            distributor.setShare(holder, 0);
        }else{
            distributor.setShare(holder, _balances[holder]);
        }
    }

    function setIsDividendExempt(address holder, bool exempt) external onlyOwner {
        _setIsDividendExempt(holder, exempt);
    }

    function setIsFeeExempt(address holder, bool exempt) external onlyOwner {
        isFeeExempt[holder] = exempt;
    }

    function setFee (uint256 _fee) external onlyOwner {
        require (_fee <= 14, "Fee can't exceed 14%");
        totalFee = _fee;
    }
  
    function manualSend() external onlyOwner {
        uint256 contractETHBalance = address(this).balance;
        payable(marketingWallet).transfer(contractETHBalance);
    }

    function claimDividend() external {
        distributor.claimDividend(msg.sender);
    }
    
    function claimDividend(address holder) external onlyOwner {
        distributor.claimDividend(holder);
    }
    
    function getClaimableDividendOf(address shareholder) public view returns (uint256) {
        return distributor.getClaimableDividendOf(shareholder);
    }
    
    function manualBurn(uint256 amount) external onlyOwner returns (bool) {
        return _basicTransfer(address(this), DEAD, amount);
    }
    
    function getCirculatingSupply() public view returns (uint256) {
        return _totalSupply.sub(balanceOf(DEAD)).sub(balanceOf(ZERO));
    }

    function setMarketingWallet(address _marketingWallet) external onlyOwner {
        marketingWallet = payable(_marketingWallet);
    } 

    function getTotalDividends() external view returns (uint256) {
        return distributor.totalDividends();
    }    

    function getTotalClaimed() external view returns (uint256) {
        return distributor.totalClaimed();
    }

     function getDividendsClaimedOf (address shareholder) external view returns (uint256) {
        return distributor.getDividendsClaimedOf(shareholder);
    }

    function removeBuyLimit() external onlyOwner {
        buyLimit = false;
    }

    function checkBot(address account) public view returns (bool) {
        return isBot[account];
    }

    function setBlacklistEnabled() external onlyOwner {
        require (blacklistEnabled == false, "can only be called once");
        blacklistEnabled = true;
    }

    function setSwapThresholdAmount (uint256 amount) external onlyOwner {
        require (amount <= _totalSupply.div(100), "can't exceed 1%");
        numTokensSellToAddToLiquidity = amount * 10 ** 9;
    } 
   
}