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  //
  // website: https://itwalx.com
  // x: https://x.com/walxtoken
  // telegram: https://t.me/walxtoken
  
  // SPDX-License-Identifier: MIT
  pragma solidity ^0.8.7;
  
  interface IERC20 {
      function totalSupply() external view returns (uint256);
  
      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 IDEXRouter {
      function factory() external pure returns (address);
  
      function WETH() external pure returns (address);
  
      function swapExactTokensForETHSupportingFeeOnTransferTokens(
          uint256 amountIn,
          uint256 amountOutMin,
          address[] calldata path,
          address to,
          uint256 deadline
      ) external;
  
      function addLiquidityETH(
          address token,
          uint amountTokenDesired,
          uint amountTokenMin,
          uint amountETHMin,
          address to,
          uint deadline
      ) external payable;
  }
  
  interface IDEXFactory {
      function createPair(
          address tokenA,
          address tokenB
      ) external returns (address pair);
  }
  
  abstract contract Context {
      function _msgSender() internal view returns (address payable) {
          return payable(msg.sender);
      }
  
      function _msgData() internal view 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);
      }
  
      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;
      }
  }
  
  contract CapibaraWalxInWater is IERC20, Ownable {
      address constant ZERO = 0x0000000000000000000000000000000000000000;
      address constant DEAD = 0x000000000000000000000000000000000000dEaD;
  
      IDEXRouter public router;
      address constant routerAddress = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
  
      string constant _name = "Capybara walx in water";
      string constant _symbol = "WALX";
      uint8 constant _decimals = 18;
  
      uint256 constant _totalSupply = 420_690_000 * (10 ** _decimals);
  
      mapping(address => uint256) _balances;
      mapping(address => mapping(address => uint256)) _allowances;
  
      mapping(address => bool) isFeeExempt;
      mapping(address => bool) liquidityCreator;
      mapping(address => bool) isMaxBuyExempt;
      mapping(address => bool) liquidityPools;
      address immutable public pair;
  
      uint256 liquidityFee = 25000;
      uint256 marketingFee = 25000;
      uint256 totalFee = liquidityFee + marketingFee;
      uint256 feeDenominator = 10000;
  
      uint256 maxBuyNumerator = 100;
      uint256 maxBuyDenominator = 10000;
  
      uint256 public launchedAt;
      bool isTradingAllowed = false;
      bool isSwapEnabled = true;
  
      address devWallet;
      modifier onlyDev() {
          require(
              _msgSender() == devWallet,
              "walx: Caller is not a team member"
          );
          _;
      }
  
      bool inSwap;
      modifier swapping() {
          inSwap = true;
          _;
          inSwap = false;
      }
  
      event DistributedFees(uint256 fee);
  
      constructor() {
          router = IDEXRouter(routerAddress);
          pair = IDEXFactory(router.factory()).createPair(
              router.WETH(),
              address(this)
          );
          liquidityPools[pair] = true;
          _allowances[owner()][routerAddress] = type(uint256).max;
          _allowances[address(this)][routerAddress] = type(uint256).max;
  
          isFeeExempt[owner()] = true;
          isFeeExempt[address(this)] = true;
          liquidityCreator[owner()] = true;
  
          isMaxBuyExempt[owner()] = true;
          isMaxBuyExempt[address(this)] = true;
          isMaxBuyExempt[pair] = true;
          isMaxBuyExempt[routerAddress] = true;
  
          _balances[owner()] = _totalSupply;
  
          emit Transfer(address(0), owner(), _totalSupply);
      }
  
      receive() external payable {}
  
      function totalSupply() external pure override returns (uint256) {
          return _totalSupply;
      }
  
      function decimals() external pure returns (uint8) {
          return _decimals;
      }
  
      function symbol() external pure returns (string memory) {
          return _symbol;
      }
  
      function name() external pure returns (string memory) {
          return _name;
      }
  
      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 approveMaximum(address spender) external returns (bool) {
          return approve(spender, type(uint256).max);
      }
  
      function decreaseFee(
          uint256 _liquidityFee,
          uint256 _marketingFee
      ) external onlyDev {
          require(_liquidityFee <= liquidityFee, "walx: Can't make fee higher");
          require(_marketingFee <= marketingFee, "walx: Can't make fee higher");
          liquidityFee = _liquidityFee;
          marketingFee = _marketingFee;
          totalFee = _liquidityFee + _marketingFee;
      }
  
      function setDevWallet(address _dev) external onlyOwner {
          devWallet = _dev;
      }
  
      function feeWithdrawal(uint256 amount) external onlyDev {
          uint256 amountETH = address(this).balance;
          payable(devWallet).transfer((amountETH * amount) / 100);
      }
  
      function setSwapBackEnabled(bool _enabled) external onlyDev {
          isSwapEnabled = _enabled;
      }
  
      function startTrading() external onlyOwner {
          require(!isTradingAllowed);
          isTradingAllowed = true;
          launchedAt = block.number;
      }
  
      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] -
                  amount;
          }
  
          return _transferFrom(sender, recipient, amount);
      }
  
      function _transferFrom(
          address sender,
          address recipient,
          uint256 amount
      ) internal returns (bool) {
          require(sender != address(0), "walx: transfer from 0x0");
          require(recipient != address(0), "walx: transfer to 0x0");
          require(amount > 0, "walx: Amount must be > zero");
          require(_balances[sender] >= amount, "walx: Insufficient balance");
  
          if (!launched() && liquidityPools[recipient]) {
              require(
                  liquidityCreator[sender],
                  "walx: Liquidity not added yet."
              );
              launch();
          }
  
          if (!isTradingAllowed) {
              require(
                  liquidityCreator[sender] || liquidityCreator[recipient],
                  "walx: Trading not open yet."
              );
          }
  
          if (inSwap) {
              return _basicTransfer(sender, recipient, amount);
          }
  
          if (liquidityPools[sender] && !isMaxBuyExempt[recipient]) {
              uint256 maxAmount = (_totalSupply * maxBuyNumerator) /
                  maxBuyDenominator;
              require(
                  amount <= maxAmount,
                  "walx: Max buy amount exceeded. Try a lower amount."
              );
          }
  
          _balances[sender] = _balances[sender] - amount;
  
          uint256 amountReceived = feeExcluded(sender)
              ? receiveFee(recipient, amount)
              : amount;
  
          if (shouldSwapBack(recipient)) {
              if (amount > 0) swapBack();
          }
  
          _balances[recipient] = _balances[recipient] + amountReceived;
  
          emit Transfer(sender, recipient, amountReceived);
          return true;
      }
  
      function launched() internal view returns (bool) {
          return launchedAt != 0;
      }
  
      function launch() internal {
          launchedAt = block.number;
      }
  
      function _basicTransfer(
          address sender,
          address recipient,
          uint256 amount
      ) internal returns (bool) {
          _balances[sender] = _balances[sender] - amount;
          _balances[recipient] = _balances[recipient] + amount;
          emit Transfer(sender, recipient, amount);
          return true;
      }
  
      function feeExcluded(address sender) internal view returns (bool) {
          return !isFeeExempt[sender];
      }
  
      function receiveFee(
          address recipient,
          uint256 amount
      ) internal returns (uint256) {
          bool sellingOrBuying = liquidityPools[recipient] ||
              liquidityPools[msg.sender];
  
          if (!sellingOrBuying) {
              return amount;
          }
  
          uint256 feeAmount = (amount * totalFee) / feeDenominator;
          _balances[address(this)] += feeAmount;
  
          return amount - feeAmount;
      }
  
      function shouldSwapBack(address recipient) internal view returns (bool) {
          return
              !liquidityPools[msg.sender] && !inSwap && liquidityPools[recipient] && isSwapEnabled;
      }
  
      function setProvideLiquidity(address lp, bool isPool) external onlyDev {
          require(lp != pair, "walx: Can't alter current liquidity pair");
          liquidityPools[lp] = isPool;
      }
  
      function setMaxBuyExempt(address holder, bool exempt) external onlyOwner {
          isMaxBuyExempt[holder] = exempt;
      }
  
      function swapBack() internal swapping {
          uint256 myBalance = _balances[address(this)];
  
          if (myBalance == 0) return;
  
          uint256 amountToSwap = (myBalance * 3) / 4;
          uint256 amountForLiquidity = myBalance - amountToSwap;
  
          address[] memory path = new address[](2);
          path[0] = address(this);
          path[1] = router.WETH();
  
          uint256 ETHBalanceBefore = address(this).balance;
  
          router.swapExactTokensForETHSupportingFeeOnTransferTokens(
              amountToSwap,
              0,
              path,
              address(this),
              block.timestamp
          );
  
          uint256 ETHAmountForLiquidity = (address(this).balance -
              ETHBalanceBefore) / 3;
  
          router.addLiquidityETH{value: ETHAmountForLiquidity}(
              address(this),
              amountForLiquidity,
              0,
              0,
              devWallet,
              block.timestamp
          );
  
          emit DistributedFees(amountToSwap);
      }
  
      function addLiquidityCreator(address _liquidityCreator) external onlyOwner {
          liquidityCreator[_liquidityCreator] = true;
      }
  
      function getCurrentSupply() public view returns (uint256) {
          return _totalSupply - balanceOf(DEAD) - balanceOf(ZERO);
      }
  }