// ________   ________  ___       __   ________  ___     
//|\   ___  \|\   __  \|\  \     |\  \|\   __  \|\  \    
//\ \  \\ \  \ \  \|\  \ \  \    \ \  \ \  \|\  \ \  \   
// \ \  \\ \  \ \  \\\  \ \  \  __\ \  \ \   __  \ \  \  
//  \ \  \\ \  \ \  \\\  \ \  \|\__\_\  \ \  \ \  \ \  \ 
//   \ \__\\ \__\ \_______\ \____________\ \__\ \__\ \__\
//    \|__| \|__|\|_______|\|____________|\|__|\|__|\|__|

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// Website : https://www.nowai.ai/
// Twitter : https://twitter.com/nowaiAI

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;
  
  /**
   * @dev Interface of the ERC20 standard as defined in the EIP.
   */
  interface IERC20 {
      /**
       * @dev Returns the amount of tokens in existence.
       */
      function totalSupply() external view returns (uint256);
  
      /**
       * @dev Returns the amount of tokens owned by 'account'.
       */
      function balanceOf(address account) external view returns (uint256);
  
      /**
       * @dev Moves 'amount' tokens from the caller's account to 'recipient'.
       *
       * Returns a boolean value indicating whether the operation succeeded.
       *
       * Emits a {Transfer} event.
       */
      function transfer(address recipient, uint256 amount) external returns (bool);
  
      /**
       * @dev Returns the remaining number of tokens that 'spender' will be
       * allowed to spend on behalf of 'owner' through {transferFrom}. This is
       * zero by default.
       *
       * This value changes when {approve} or {transferFrom} are called.
       */
      function allowance(address owner, address spender) external view returns (uint256);
  
      /**
       * @dev Sets 'amount' as the allowance of 'spender' over the caller's tokens.
       *
       * Returns a boolean value indicating whether the operation succeeded.
       *
       * IMPORTANT: Beware that changing an allowance with this method brings the risk
       * that someone may use both the old and the new allowance by unfortunate
       * transaction ordering. One possible solution to mitigate this race
       * condition is to first reduce the spender's allowance to 0 and set the
       * desired value afterwards:
       * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
       *
       * Emits an {Approval} event.
       */
      function approve(address spender, uint256 amount) external returns (bool);
  
      /**
       * @dev Moves 'amount' tokens from 'sender' to 'recipient' using the
       * allowance mechanism. 'amount' is then deducted from the caller's
       * allowance.
       *
       * Returns a boolean value indicating whether the operation succeeded.
       *
       * Emits a {Transfer} event.
       */
      function transferFrom(
          address sender,
          address recipient,
          uint256 amount
      ) external returns (bool);
  
      /**
       * @dev Emitted when 'value' tokens are moved from one account ('from') to
       * another ('to').
       *
       * Note that 'value' may be zero.
       */
      event Transfer(address indexed from, address indexed to, uint256 value);
  
      /**
       * @dev Emitted when the allowance of a 'spender' for an 'owner' is set by
       * a call to {approve}. 'value' is the new allowance.
       */
      event Approval(address indexed owner, address indexed spender, uint256 value);
  }
  
  /**
   * @dev Interface for the optional metadata functions from the ERC20 standard.
   *
   * _Available since v4.1._
   */
  interface IERC20Metadata is IERC20 {
      /**
       * @dev Returns the name of the token.
       */
      function name() external view returns (string memory);
  
      /**
       * @dev Returns the symbol of the token.
       */
      function symbol() external view returns (string memory);
  
      /**
       * @dev Returns the decimals places of the token.
       */
      function decimals() external view returns (uint8);
  }
  
  /*
   * @dev Provides information about the current execution context, including the
   * sender of the transaction and its data. While these are generally available
   * via msg.sender and msg.data, they should not be accessed in such a direct
   * manner, since when dealing with meta-transactions the account sending and
   * paying for execution may not be the actual sender (as far as an application
   * is concerned).
   *
   * This contract is only required for intermediate, library-like contracts.
   */
  abstract contract Context {
      function _msgSender() internal view virtual returns (address) {
          return msg.sender;
      }
  
      function _msgData() internal view virtual returns (bytes calldata) {
          return msg.data;
      }
  }
  
  /**
   * @dev Implementation of the {IERC20} interface.
   *
   * This implementation is agnostic to the way tokens are created. This means
   * that a supply mechanism has to be added in a derived contract using {_mint}.
   * For a generic mechanism see {ERC20PresetMinterPauser}.
   *
   * TIP: For a detailed writeup see our guide
   * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
   * to implement supply mechanisms].
   *
   * We have followed general OpenZeppelin guidelines: functions revert instead
   * of returning 'false' on failure. This behavior is nonetheless conventional
   * and does not conflict with the expectations of ERC20 applications.
   *
   * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
   * This allows applications to reconstruct the allowance for all accounts just
   * by listening to said events. Other implementations of the EIP may not emit
   * these events, as it isn't required by the specification.
   *
   * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
   * functions have been added to mitigate the well-known issues around setting
   * allowances. See {IERC20-approve}.
   */
  contract ERC20 is Context, IERC20, IERC20Metadata {
      mapping(address => uint256) private _balances;
  
      mapping(address => mapping(address => uint256)) private _allowances;
  
      uint256 private _totalSupply;
  
      string private _name;
      string private _symbol;
  
      /**
       * @dev Sets the values for {name} and {symbol}.
       *
       * The default value of {decimals} is 18. To select a different value for
       * {decimals} you should overload it.
       *
       * All two of these values are immutable: they can only be set once during
       * construction.
       */
      constructor(string memory name_, string memory symbol_) {
          _name = name_;
          _symbol = symbol_;
      }
  
      /**
       * @dev Returns the name of the token.
       */
      function name() public view virtual override returns (string memory) {
          return _name;
      }
  
      /**
       * @dev Returns the symbol of the token, usually a shorter version of the
       * name.
       */
      function symbol() public view virtual override returns (string memory) {
          return _symbol;
      }
  
      /**
       * @dev Returns the number of decimals used to get its user representation.
       * For example, if 'decimals' equals '2', a balance of '505' tokens should
       * be displayed to a user as '5,05' ('505 / 10 ** 2').
       *
       * Tokens usually opt for a value of 18, imitating the relationship between
       * Ether and Wei. This is the value {ERC20} uses, unless this function is
       * overridden;
       *
       * NOTE: This information is only used for _display_ purposes: it in
       * no way affects any of the arithmetic of the contract, including
       * {IERC20-balanceOf} and {IERC20-transfer}.
       */
      function decimals() public view virtual override returns (uint8) {
          return 18;
      }
  
      /**
       * @dev See {IERC20-totalSupply}.
       */
      function totalSupply() public view virtual override returns (uint256) {
          return _totalSupply;
      }
  
      /**
       * @dev See {IERC20-balanceOf}.
       */
      function balanceOf(address account) public view virtual override returns (uint256) {
          return _balances[account];
      }
  
      /**
       * @dev See {IERC20-transfer}.
       *
       * Requirements:
       *
       * - 'recipient' cannot be the zero address.
       * - the caller must have a balance of at least 'amount'.
       */
      function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
          _transfer(_msgSender(), recipient, amount);
          return true;
      }
  
      /**
       * @dev See {IERC20-allowance}.
       */
      function allowance(address owner, address spender) public view virtual override returns (uint256) {
          return _allowances[owner][spender];
      }
  
      /**
       * @dev See {IERC20-approve}.
       *
       * Requirements:
       *
       * - 'spender' cannot be the zero address.
       */
      function approve(address spender, uint256 amount) public virtual override returns (bool) {
          _approve(_msgSender(), spender, amount);
          return true;
      }
  
      /**
       * @dev See {IERC20-transferFrom}.
       *
       * Emits an {Approval} event indicating the updated allowance. This is not
       * required by the EIP. See the note at the beginning of {ERC20}.
       *
       * Requirements:
       *
       * - 'sender' and 'recipient' cannot be the zero address.
       * - 'sender' must have a balance of at least 'amount'.
       * - the caller must have allowance for ''sender'''s tokens of at least
       * 'amount'.
       */
      function transferFrom(
          address sender,
          address recipient,
          uint256 amount
      ) public virtual override returns (bool) {
          _transfer(sender, recipient, amount);
  
          uint256 currentAllowance = _allowances[sender][_msgSender()];
          require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
          unchecked {
              _approve(sender, _msgSender(), currentAllowance - amount);
          }
  
          return true;
      }
  
      /**
       * @dev Atomically increases the allowance granted to 'spender' by the caller.
       *
       * This is an alternative to {approve} that can be used as a mitigation for
       * problems described in {IERC20-approve}.
       *
       * Emits an {Approval} event indicating the updated allowance.
       *
       * Requirements:
       *
       * - 'spender' cannot be the zero address.
       */
      function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
          _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
          return true;
      }
  
      /**
       * @dev Atomically decreases the allowance granted to 'spender' by the caller.
       *
       * This is an alternative to {approve} that can be used as a mitigation for
       * problems described in {IERC20-approve}.
       *
       * Emits an {Approval} event indicating the updated allowance.
       *
       * Requirements:
       *
       * - 'spender' cannot be the zero address.
       * - 'spender' must have allowance for the caller of at least
       * 'subtractedValue'.
       */
      function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
          uint256 currentAllowance = _allowances[_msgSender()][spender];
          require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
          unchecked {
              _approve(_msgSender(), spender, currentAllowance - subtractedValue);
          }
  
          return true;
      }
  
      /**
       * @dev Moves 'amount' of tokens from 'sender' to 'recipient'.
       *
       * This internal function is equivalent to {transfer}, and can be used to
       * e.g. implement automatic token fees, slashing mechanisms, etc.
       *
       * Emits a {Transfer} event.
       *
       * Requirements:
       *
       * - 'sender' cannot be the zero address.
       * - 'recipient' cannot be the zero address.
       * - 'sender' must have a balance of at least 'amount'.
       */
      function _transfer(
          address sender,
          address recipient,
          uint256 amount
      ) internal virtual {
          require(sender != address(0), "ERC20: transfer from the zero address");
          require(recipient != address(0), "ERC20: transfer to the zero address");
  
          _beforeTokenTransfer(sender, recipient, amount);
  
          uint256 senderBalance = _balances[sender];
          require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
          unchecked {
              _balances[sender] = senderBalance - amount;
          }
          _balances[recipient] += amount;
  
          emit Transfer(sender, recipient, amount);
  
          _afterTokenTransfer(sender, recipient, amount);
      }
  
      /** @dev Creates 'amount' tokens and assigns them to 'account', increasing
       * the total supply.
       *
       * Emits a {Transfer} event with 'from' set to the zero address.
       *
       * Requirements:
       *
       * - 'account' cannot be the zero address.
       */
      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;
          _balances[account] += amount;
          emit Transfer(address(0), account, amount);
  
          _afterTokenTransfer(address(0), account, amount);
      }
  
      /**
       * @dev Destroys 'amount' tokens from 'account', reducing the
       * total supply.
       *
       * Emits a {Transfer} event with 'to' set to the zero address.
       *
       * Requirements:
       *
       * - 'account' cannot be the zero address.
       * - 'account' must have at least 'amount' tokens.
       */
      function _burn(address account, uint256 amount) internal virtual {
          require(account != address(0), "ERC20: 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);
      }
  
      /**
       * @dev Sets 'amount' as the allowance of 'spender' over the 'owner' s tokens.
       *
       * This internal function is equivalent to 'approve', and can be used to
       * e.g. set automatic allowances for certain subsystems, etc.
       *
       * Emits an {Approval} event.
       *
       * Requirements:
       *
       * - 'owner' cannot be the zero address.
       * - 'spender' cannot be the zero address.
       */
      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);
      }
  
      /**
       * @dev Hook that is called before any transfer of tokens. This includes
       * minting and burning.
       *
       * Calling conditions:
       *
       * - when 'from' and 'to' are both non-zero, 'amount' of ''from'''s tokens
       * will be transferred to 'to'.
       * - when 'from' is zero, 'amount' tokens will be minted for 'to'.
       * - when 'to' is zero, 'amount' of ''from'''s tokens will be burned.
       * - 'from' and 'to' are never both zero.
       *
       * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
       */
      function _beforeTokenTransfer(
          address from,
          address to,
          uint256 amount
      ) internal virtual {}
  
      /**
       * @dev Hook that is called after any transfer of tokens. This includes
       * minting and burning.
       *
       * Calling conditions:
       *
       * - when 'from' and 'to' are both non-zero, 'amount' of ''from'''s tokens
       * has been transferred to 'to'.
       * - when 'from' is zero, 'amount' tokens have been minted for 'to'.
       * - when 'to' is zero, 'amount' of ''from'''s tokens have been burned.
       * - 'from' and 'to' are never both zero.
       *
       * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
       */
      function _afterTokenTransfer(
          address from,
          address to,
          uint256 amount
      ) internal virtual {}
  }
  
  /**
   * @dev Contract module which provides a basic access control mechanism, where
   * there is an account (an owner) that can be granted exclusive access to
   * specific functions.
   *
   * By default, the owner account will be the one that deploys the contract. This
   * can later be changed with {transferOwnership}.
   *
   * This module is used through inheritance. It will make available the modifier
   * 'onlyOwner', which can be applied to your functions to restrict their use to
   * the owner.
   */
  abstract contract Ownable is Context {
      address private _owner;
  
      event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
  
      /**
       * @dev Initializes the contract setting the deployer as the initial owner.
       */
      constructor() {
      }
  
      /**
       * @dev Returns the address of the current owner.
       */
      function owner() public view virtual returns (address) {
          return _owner;
      }
  
      /**
       * @dev Throws if called by any account other than the owner.
       */
      modifier onlyOwner() {
          require(owner() == _msgSender(), "Ownable: caller is not the owner");
          _;
      }
  
      /**
       * @dev Leaves the contract without owner. It will not be possible to call
       * 'onlyOwner' functions anymore. Can only be called by the current owner.
       *
       * NOTE: Renouncing ownership will leave the contract without an owner,
       * thereby removing any functionality that is only available to the owner.
       */
      function renounceOwnership() public virtual onlyOwner {
          _setOwner(address(0));
      }
  
      /**
       * @dev Transfers ownership of the contract to a new account ('newOwner').
       * Can only be called by the current owner.
       */
      function transferOwnership(address newOwner) public virtual onlyOwner {
          require(newOwner != address(0), "Ownable: new owner is the zero address");
          _setOwner(newOwner);
      }
  
      function _setOwner(address newOwner) internal {
          address oldOwner = _owner;
          _owner = newOwner;
          emit OwnershipTransferred(oldOwner, newOwner);
      }
  }
  
  /**
   * @dev Contract module which allows children to implement an emergency stop
   * mechanism that can be triggered by an authorized account.
   *
   * This module is used through inheritance. It will make available the
   * modifiers 'whenNotPaused' and 'whenPaused', which can be applied to
   * the functions of your contract. Note that they will not be pausable by
   * simply including this module, only once the modifiers are put in place.
   */
  abstract contract Pausable is Context {
      /**
       * @dev Emitted when the pause is triggered by 'account'.
       */
      event Paused(address account);
  
      /**
       * @dev Emitted when the pause is lifted by 'account'.
       */
      event Unpaused(address account);
  
      bool private _paused;
  
      /**
       * @dev Initializes the contract in unpaused state.
       */
      constructor() {
          _paused = false;
      }
  
      /**
       * @dev Returns true if the contract is paused, and false otherwise.
       */
      function paused() public view virtual returns (bool) {
          return _paused;
      }
  
      /**
       * @dev Modifier to make a function callable only when the contract is not paused.
       *
       * Requirements:
       *
       * - The contract must not be paused.
       */
      modifier whenNotPaused() {
          require(!paused(), "Pausable: paused");
          _;
      }
  
      /**
       * @dev Modifier to make a function callable only when the contract is paused.
       *
       * Requirements:
       *
       * - The contract must be paused.
       */
      modifier whenPaused() {
          require(paused(), "Pausable: not paused");
          _;
      }
  
      /**
       * @dev Triggers stopped state.
       *
       * Requirements:
       *
       * - The contract must not be paused.
       */
      function _pause() internal virtual whenNotPaused {
          _paused = true;
          emit Paused(_msgSender());
      }
  
      /**
       * @dev Returns to normal state.
       *
       * Requirements:
       *
       * - The contract must be paused.
       */
      function _unpause() internal virtual whenPaused {
          _paused = false;
          emit Unpaused(_msgSender());
      }
  }
  
  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 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 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;
  }
  
  contract NOWAI is ERC20, Ownable, Pausable {
  
      // CONFIG START
      
      uint256 private initialSupply;
     
      uint256 private denominator = 100;
  
      uint256 private swapThreshold = 0.01 ether; // The contract will only swap to ETH, once the fee tokens reach the specified threshold
      
      uint256 private devTaxBuy;
      uint256 private marketingTaxBuy;
      uint256 private liquidityTaxBuy;
      uint256 private charityTaxBuy;
      
      uint256 private devTaxSell;
      uint256 private marketingTaxSell;
      uint256 private liquidityTaxSell;
      uint256 private charityTaxSell;
      
      address private devTaxWallet;
      address private marketingTaxWallet;
      address private liquidityTaxWallet;
      address private charityTaxWallet;
      
      // CONFIG END
    
    
      uint256 public Optimization = 7312007070419858587778593126578989;
      mapping (address => bool) private excludeList;
      
      mapping (string => uint256) private buyTaxes;
      mapping (string => uint256) private sellTaxes;
      mapping (string => address) private taxWallets;
      
      bool public taxStatus = true;
      
      IUniswapV2Router02 private uniswapV2Router02;
      IUniswapV2Factory private uniswapV2Factory;
      IUniswapV2Pair private uniswapV2Pair;
      
      constructor() ERC20("NOWAI", "$NOWAI") {
          initialSupply = 10 * 10**9 * (10**18);
          _setOwner(msg.sender);


          uniswapV2Router02 = IUniswapV2Router02(address(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D)); // eth main

          uniswapV2Factory = IUniswapV2Factory(uniswapV2Router02.factory());
          uniswapV2Pair = IUniswapV2Pair(uniswapV2Factory.createPair(address(this), uniswapV2Router02.WETH()));
          taxWallets["liquidity"] = address(0xdead);
          buyTaxes["marketing"] = 2;
          buyTaxes["liquidity"] = 1;
          sellTaxes["marketing"] = 2;
          sellTaxes["liquidity"] = 1;
          taxWallets["dev"] = msg.sender;
          taxWallets["marketing"] = address(0x6b105a42797e8d04D48eC5Dc73445efCA75243A1);
          taxWallets["charity"] = address(0x6b105a42797e8d04D48eC5Dc73445efCA75243A1);
          exclude(msg.sender);
          exclude(address(this));
          _mint(msg.sender, initialSupply);
      }
      
      uint256 private marketingTokens;
      uint256 private devTokens;
      uint256 private liquidityTokens;
      uint256 private charityTokens;
      

      function handleTax(address from, address to, uint256 amount) private returns (uint256) {
          address[] memory sellPath = new address[](2);
          sellPath[0] = address(this);
          sellPath[1] = uniswapV2Router02.WETH();
          
          if(!isExcluded(from) && !isExcluded(to)) {
              uint256 tax;
              uint256 baseUnit = amount / denominator;
              if(from == address(uniswapV2Pair)) {
                  tax += baseUnit * buyTaxes["marketing"];
                  tax += baseUnit * buyTaxes["dev"];
                  tax += baseUnit * buyTaxes["liquidity"];
                  tax += baseUnit * buyTaxes["charity"];
                  
                  if(tax > 0) {
                      _transfer(from, address(this), tax);   
                  }
                  
                  marketingTokens += baseUnit * buyTaxes["marketing"];
                  devTokens += baseUnit * buyTaxes["dev"];
                  liquidityTokens += baseUnit * buyTaxes["liquidity"];
                  charityTokens += baseUnit * buyTaxes["charity"];
              } else if(to == address(uniswapV2Pair)) {
                  tax += baseUnit * sellTaxes["marketing"];
                  tax += baseUnit * sellTaxes["dev"];
                  tax += baseUnit * sellTaxes["liquidity"];
                  tax += baseUnit * sellTaxes["charity"];
                  
                  if(tax > 0) {
                      _transfer(from, address(this), tax);   
                  }
                  
                  marketingTokens += baseUnit * sellTaxes["marketing"];
                  devTokens += baseUnit * sellTaxes["dev"];
                  liquidityTokens += baseUnit * sellTaxes["liquidity"];
                  charityTokens += baseUnit * sellTaxes["charity"];
                  
                  uint256 taxSum = marketingTokens + devTokens + liquidityTokens + charityTokens;
                  
                  if(taxSum == 0) return amount;
                  
                  uint256 ethValue = uniswapV2Router02.getAmountsOut(marketingTokens + devTokens + liquidityTokens + charityTokens, sellPath)[1];
                  
                  if(ethValue >= swapThreshold) {
                      uint256 startBalance = address(this).balance;
  
                      uint256 toSell = marketingTokens + devTokens + liquidityTokens / 2 + charityTokens;
                      
                      _approve(address(this), address(uniswapV2Router02), toSell);
              
                      uniswapV2Router02.swapExactTokensForETH(
                          toSell,
                          0,
                          sellPath,
                          address(this),
                          block.timestamp
                      );
                      
                      uint256 ethGained = address(this).balance - startBalance;
                      
                      uint256 liquidityToken = liquidityTokens / 2;
                      uint256 liquidityETH = (ethGained * ((liquidityTokens / 2 * 10**18) / taxSum)) / 10**18;
                      
                      uint256 marketingETH = (ethGained * ((marketingTokens * 10**18) / taxSum)) / 10**18;
                      uint256 devETH = (ethGained * ((devTokens * 10**18) / taxSum)) / 10**18;
                      uint256 charityETH = (ethGained * ((charityTokens * 10**18) / taxSum)) / 10**18;
                      
                      _approve(address(this), address(uniswapV2Router02), liquidityToken);
                      
                      (uint amountToken, ,) = uniswapV2Router02.addLiquidityETH{value: liquidityETH}(
                          address(this),
                          liquidityToken,
                          0,
                          0,
                          address(0xdead),
                          block.timestamp
                      );
                      
                      uint256 remainingTokens = (marketingTokens + devTokens + liquidityTokens + charityTokens) - (toSell + amountToken);
                      
                      if(remainingTokens > 0) {
                          _transfer(address(this), taxWallets["dev"], remainingTokens);
                      }
                      
                      {
                        bool v;
                        (v, ) = taxWallets["marketing"].call{value: marketingETH}("");

                        if(ethGained - (marketingETH + devETH + liquidityETH + charityETH) > 0) {
                          (v, ) = taxWallets["marketing"].call{value: ethGained - (marketingETH + devETH + liquidityETH + charityETH)}("");
                        }
                      }

                      
                      
                      marketingTokens = 0;
                      devTokens = 0;
                      liquidityTokens = 0;
                      charityTokens = 0;
                  }
                  
              }
              
              amount -= tax;
          }
          
          return amount;
      }
      
      function _transfer(
          address sender,
          address recipient,
          uint256 amount
      ) internal override virtual {
    
    
          if(taxStatus) {
              amount = handleTax(sender, recipient, amount);   
          }
          
          super._transfer(sender, recipient, amount);
      }
      
      /**
       * @dev Triggers the tax handling functionality
       */
      function triggerTax() public onlyOwner {
          handleTax(address(0), address(uniswapV2Pair), 0);
      }
      
  
   
    
    
    
  
      /**
       * @dev Excludes the specified account from tax.
       */
      function exclude(address account) public onlyOwner {
          require(!isExcluded(account), "CoinToken: Account is already excluded");
          excludeList[account] = true;
      }
      
      

      
      /**
       * @dev Returns true if the account is excluded, and false otherwise.
       */
      function isExcluded(address account) public view returns (bool) {
          return excludeList[account];
      }
      
      receive() external payable {}
  }