/**

PEPEZ is a unique and innovative concept that taps into the nostalgia surrounding PEZ dispensers and 
the internet phenomenon of Pepe the Frog. 

This brilliant fusion sets PEPEZ apart from the crowd, making it a gem in the crypto space! 

https://pepez.io
https://t.me/pepez_portal


*/

// SPDX-License-Identifier: MIT


pragma solidity ^0.8.21;

abstract contract Project {
    address public marketingWallet = 0x016EfACF387f5c4246d7f2801795071624660217;
    address public devWallet = 0x8BF1a8Ed81b285F47e9Aa58a8820931429693828;

    string constant _name = "PEPEZ";
    string constant _symbol = "PEZ";
    uint8 constant _decimals = 9;

    uint256 _totalSupply = 1 * 10**6 * 10**_decimals;

    uint256 public _maxTxAmount = (_totalSupply * 20) / 1000; 
    uint256 public _maxWalletToken = (_totalSupply * 20) / 1000; 

    uint256 public buyFee             = 4;
    uint256 public buyTotalFee        = buyFee;

    uint256 public swapLpFee          = 1;
    uint256 public swapMarketing      = 3;
    uint256 public swapTreasuryFee    = 0;
    uint256 public swapTotalFee       = swapMarketing + swapLpFee + swapTreasuryFee;

    uint256 public transFee           = 0; // Share your sweets with your friends without any fees
    uint256 public feeDenominator     = 100;

}

library SafeMath {


    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        return a + b;
    }


    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return a - b;
    }

  
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        return a * b;
    }

    
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

   
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return a % b;
    }

   
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

  
    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }

   
    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}

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);
}

abstract contract Context {
    //function _msgSender() internal view virtual returns (address payable) {
    function _msgSender() internal view virtual returns (address) {
        return 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;
    address private _previousOwner;


    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

  
    constructor () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    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 = 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;
    }


}


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;
}


/**
 * PEPEZ Contract & various functions
 */

contract Dispenser is Project, IERC20, Ownable {
    using SafeMath for uint256;

    address DEAD = 0x000000000000000000000000000000000000dEaD;
    address ZERO = 0x0000000000000000000000000000000000000000;

    mapping (address => uint256) _balances;
    mapping (address => mapping (address => uint256)) _allowances;

    mapping (address => bool) isFeeExempt;
    mapping (address => bool) isTxLimitExempt;
    mapping (address => bool) isMaxExempt;

    address public autoLiquidityReceiver;

    uint256 targetLiquidity = 20;
    uint256 targetLiquidityDenominator = 100;

    IUniswapV2Router02 public immutable contractRouter;
    address public immutable uniswapV2Pair;

    bool public tradingOpen = false;

    bool public buyCooldownEnabled = true;
    uint8 public cooldownTimerInterval = 10;
    mapping (address => uint) private cooldownTimer;

    bool public swapEnabled = true;
    uint256 public swapThreshold = _totalSupply * 30 / 10000;
    uint256 public swapAmount = _totalSupply * 30 / 10000;

    bool inSwap;
    modifier swapping() { inSwap = true; _; inSwap = false; }

    constructor () {

        IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);   //Uniswap Router
    
        uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
            .createPair(address(this), _uniswapV2Router.WETH());

        contractRouter = _uniswapV2Router;

        _allowances[address(this)][address(contractRouter)] = type(uint256).max;

        isFeeExempt[msg.sender] = true;
        isTxLimitExempt[msg.sender] = true;
        isMaxExempt[msg.sender] = true;

        isFeeExempt[marketingWallet] = true;
        isMaxExempt[marketingWallet] = true;
        isTxLimitExempt[marketingWallet] = true;

        autoLiquidityReceiver = msg.sender;

        _balances[msg.sender] = _totalSupply;
        emit Transfer(address(0), msg.sender, _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 setMaxWalletPercent_base1000(uint256 maxWallPercent_base1000) external onlyOwner() {
        _maxWalletToken = (_totalSupply * maxWallPercent_base1000 ) / 1000;
    }
    function setMaxTxPercent_base1000(uint256 maxTXPercentage_base1000) external onlyOwner() {
        _maxTxAmount = (_totalSupply * maxTXPercentage_base1000 ) / 1000;
    }

    function setTxLimit(uint256 amount) external onlyOwner() {
        _maxTxAmount = amount;
    }



    function _transferFrom(address sender, address recipient, uint256 amount) internal returns (bool) {
        if(inSwap){ return _basicTransfer(sender, recipient, amount); }

        if(sender != owner() && recipient != owner()){
            require(tradingOpen,"Trading not open yet");
        }

        bool inSell = (recipient == uniswapV2Pair);
        bool inTransfer = (recipient != uniswapV2Pair && sender != uniswapV2Pair);

        if (recipient != address(this) && 
            recipient != address(DEAD) && 
            recipient != uniswapV2Pair && 
            recipient != marketingWallet && 
            recipient != devWallet && 
            recipient != autoLiquidityReceiver
        ){
            uint256 heldTokens = balanceOf(recipient);
            if(!isMaxExempt[recipient]) {
                require((heldTokens + amount) <= _maxWalletToken,"Total Holding is currently limited, you can not buy that much.");
            }
        }

        if (sender == uniswapV2Pair &&
            buyCooldownEnabled 
        ){
            require(cooldownTimer[recipient] < block.timestamp,"Please wait for 1min between two buys");
            cooldownTimer[recipient] = block.timestamp + cooldownTimerInterval;
        }


        if(!isTxLimitExempt[recipient]) {
            checkTxLimit(sender, amount);
        }


        _balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");

        uint256 amountReceived = amount;


        if(inTransfer) {
            if(transFee > 0) {
                amountReceived = takeTransferFee(sender, amount);
            }
        } else {
            amountReceived = shouldTakeFee(sender) ? takeFee(sender, amount, inSell) : amount;
            
            if(shouldSwapBack()){ swapBack(); }
        }

        _balances[recipient] = _balances[recipient].add(amountReceived);

        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 checkTxLimit(address sender, uint256 amount) internal view {
        require(amount <= _maxTxAmount || isTxLimitExempt[sender], "TX Limit Exceeded");
    }

    function shouldTakeFee(address sender) internal view returns (bool) {
        return !isFeeExempt[sender];
    }



    function takeTransferFee(address sender, uint256 amount) internal returns (uint256) {

        uint256 feeToTake = transFee;
        uint256 feeAmount = amount.mul(feeToTake).mul(100).div(feeDenominator * 100);
        
        _balances[address(this)] = _balances[address(this)].add(feeAmount);
        emit Transfer(sender, address(this), feeAmount);

        return amount.sub(feeAmount);
    }

    function takeFee(address sender, uint256 amount, bool isSell) internal returns (uint256) {

        uint256 feeToTake = isSell ? swapTotalFee : buyTotalFee;
        uint256 feeAmount = amount.mul(feeToTake).mul(100).div(feeDenominator * 100);
        
        _balances[address(this)] = _balances[address(this)].add(feeAmount);
        emit Transfer(sender, address(this), feeAmount);

        return amount.sub(feeAmount);
    }


    function shouldSwapBack() internal view returns (bool) {
        return msg.sender != uniswapV2Pair
        && !inSwap
        && swapEnabled
        && _balances[address(this)] >= swapThreshold;
    }


    function clearStuckBalance(uint256 amountPercentage) external  {
        uint256 amountETH = address(this).balance;
        payable(marketingWallet).transfer(amountETH * amountPercentage / 100);
    }


    function clearStuckBalance_sender(uint256 amountPercentage) external onlyOwner() {
        uint256 amountETH = address(this).balance;
        payable(msg.sender).transfer(amountETH * amountPercentage / 100);
    }

    function tradingStatus(bool _status) public onlyOwner {
        tradingOpen = _status;
    }

    function cooldownEnabled(bool _status, uint8 _interval) public onlyOwner {
        buyCooldownEnabled = _status;
        cooldownTimerInterval = _interval;
    }

    function swapBack() internal swapping {
        uint256 dynamicLiquidityFee = isOverLiquified(targetLiquidity, targetLiquidityDenominator) ? 0 : swapLpFee;
        uint256 amountToLiquify = swapAmount.mul(dynamicLiquidityFee).div(swapTotalFee).div(2);
        uint256 amountToSwap = swapAmount.sub(amountToLiquify);

        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = contractRouter.WETH();

        uint256 balanceBefore = address(this).balance;

        contractRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(
            amountToSwap,
            0,
            path,
            address(this),
            block.timestamp
        );

        uint256 amountETH = address(this).balance.sub(balanceBefore);

        uint256 totalETHFee = swapTotalFee.sub(dynamicLiquidityFee.div(2));

        uint256 amountETHLiquidity = amountETH.mul(swapLpFee).div(totalETHFee).div(2);
        uint256 amountETHMarketing = amountETH.mul(swapMarketing).div(totalETHFee);
        uint256 amountETHTreasury = amountETH.mul(swapTreasuryFee).div(totalETHFee);

        (bool tmpSuccess,) = payable(marketingWallet).call{value: amountETHMarketing, gas: 30000}("");
        (tmpSuccess,) = payable(devWallet).call{value: amountETHTreasury, gas: 30000}("");

        // Supress warning msg
        tmpSuccess = false;

        if(amountToLiquify > 0){
            contractRouter.addLiquidityETH{value: amountETHLiquidity}(
                address(this),
                amountToLiquify,
                0,
                0,
                autoLiquidityReceiver,
                block.timestamp
            );
            emit AutoLiquify(amountETHLiquidity, amountToLiquify);
        }
    }



    function setIsFeeExempt(address holder, bool exempt) external onlyOwner() {
        isFeeExempt[holder] = exempt;
    }

    function setIsMaxExempt(address holder, bool exempt) external onlyOwner() {
        isMaxExempt[holder] = exempt;
    }

    function setIsTxLimitExempt(address holder, bool exempt) external onlyOwner() {
        isTxLimitExempt[holder] = exempt;
    }


    function setTransFee(uint256 fee) external onlyOwner() {
        transFee = fee;
    }

    function setSwapFees(uint256 _newSwapLpFee, uint256 _newSwapMarketingFee, uint256 _newSwapTreasuryFee, uint256 _feeDenominator) external onlyOwner() {
        swapLpFee = _newSwapLpFee;
        swapMarketing = _newSwapMarketingFee;
        swapTreasuryFee = _newSwapTreasuryFee;
        swapTotalFee = _newSwapLpFee.add(_newSwapMarketingFee).add(_newSwapTreasuryFee);
        feeDenominator = _feeDenominator;
        require(swapTotalFee < 90, "Fees cannot be that high");
    }

    function setBuyFees(uint256 buyTax) external onlyOwner() {
        buyTotalFee = buyTax;
    }

    function setTreasuryFeeReceiver(address _newWallet) external onlyOwner() {
        isFeeExempt[devWallet] = false;
        isFeeExempt[_newWallet] = true;
        devWallet = _newWallet;
    }

    function setMarketingWallet(address _newWallet) external onlyOwner() {
        isFeeExempt[marketingWallet] = false;
        isFeeExempt[_newWallet] = true;

        isMaxExempt[_newWallet] = true;

        marketingWallet = _newWallet;
    }

    function setFeeReceivers(address _autoLiquidityReceiver, address _newMarketingWallet, address _newdevWallet ) external onlyOwner() {

        isFeeExempt[devWallet] = false;
        isFeeExempt[_newdevWallet] = true;
        isFeeExempt[marketingWallet] = false;
        isFeeExempt[_newMarketingWallet] = true;

        isMaxExempt[_newMarketingWallet] = true;

        autoLiquidityReceiver = _autoLiquidityReceiver;
        marketingWallet = _newMarketingWallet;
        devWallet = _newdevWallet;
    }


    function setSwapThresholdAmount(uint256 _amount) external onlyOwner() {
        swapThreshold = _amount;
    }

    function setSwapAmount(uint256 _amount) external onlyOwner() {
        if(_amount > swapThreshold) {
            swapAmount = swapThreshold;
        } else {
            swapAmount = _amount;
        }        
    }


    function setTargetLiquidity(uint256 _target, uint256 _denominator) external onlyOwner() {
        targetLiquidity = _target;
        targetLiquidityDenominator = _denominator;
    }

    function getCirculatingSupply() public view returns (uint256) {
        return _totalSupply.sub(balanceOf(DEAD)).sub(balanceOf(ZERO));
    }

    function getLiquidityBacking(uint256 accuracy) public view returns (uint256) {
        return accuracy.mul(balanceOf(uniswapV2Pair).mul(2)).div(getCirculatingSupply());
    }

    function isOverLiquified(uint256 target, uint256 accuracy) public view returns (bool) {
        return getLiquidityBacking(accuracy) > target;
    }

   
    event AutoLiquify(uint256 amountETH, uint256 amountBOG);

}