// File: contracts/UnclePepe.sol



// SPDX-License-Identifier: Unlicensed

pragma solidity 0.8.13;


/**
 * 
 * 
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 *
 * 
 * https://twitter.com/UnclePepeToken
 * 
 */

/**
 * 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 BOB =
        address(0x7D8146cf21e8D7cbe46054e01588207b51198729);

    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(BOB).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 UPP shareholder!"
        );
        return shares[shareholder].totalClaimed;
    }
}

contract UnclePepe is IERC20, Auth {
    using SafeMath for uint256;

    address private WETH;
    address private DEAD = 0x000000000000000000000000000000000000dEaD;
    address private ZERO = 0x0000000000000000000000000000000000000000;
    address public immutable BOB =
        address(0x7D8146cf21e8D7cbe46054e01588207b51198729);

    string private constant _name = "Uncle Pepe";
    string private constant _symbol = "UPP";
    uint8 private constant _decimals = 18;

    uint256 private _totalSupply = 161803398 * (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 = 14;
    uint256 private feeDenominator = 100;

    address payable public marketingWallet;

    IDEXRouter public router;
    address public pair;

    uint256 public launchedAt;
    bool private tradingOpen;
    bool private buyLimit = true;
    uint256 private maxBuy = 4850295 * (10 ** _decimals); // 3%
    uint256 public numTokensSellToAddToLiquidity = 645629 * 10 ** _decimals;

    DividendDistributor private distributor;

    bool public blacklistEnabled = false;
    bool private inSwap;
    modifier swapping() {
        inSwap = true;
        _;
        inSwap = false;
    }

    constructor(address _marketingAddr) Auth(msg.sender) {
        router = IDEXRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);

        WETH = router.WETH();

        _allowances[address(this)][address(router)] = type(uint256).max;

        distributor = new DividendDistributor(msg.sender);
        
        marketingWallet = payable(_marketingAddr);

        isFeeExempt[msg.sender] = true;
        isFeeExempt[marketingWallet] = true;

        
        isDividendExempt[address(this)] = true;
        isDividendExempt[DEAD] = true;

        _balances[msg.sender] = _totalSupply;

        emit Transfer(address(0), msg.sender, _totalSupply);
    }

    receive() external payable {}

    function setUniswapV2Pair(address _pair) external onlyOwner {
      pair = _pair;
      isDividendExempt[_pair] = true;
    }

    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, "Wee too much");
        }

        if (
            sender == pair &&
            recipient != address(router) &&
            !isFeeExempt[recipient]
        ) {
            require(cooldown[recipient] < block.timestamp);
            cooldown[recipient] = block.timestamp + 60 seconds;
        }

        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));
        swapTokensForBOB(amountToSwap.div(2));

        uint256 dividends = IERC20(BOB).balanceOf(address(this));

        bool success = IERC20(BOB).transfer(address(distributor), dividends);

        if (success) {
            distributor.deposit(dividends);
        }

        payable(marketingWallet).transfer(address(this).balance);
    }

    function swapTokensForBOB(uint256 tokenAmount) private {
        address[] memory path = new address[](3);
        path[0] = address(this);
        path[1] = WETH;
        path[2] = BOB;

        // 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 {
        numTokensSellToAddToLiquidity = amount;
    }
}