creation_sourcecode: // Sources flattened with hardhat v2.19.1 https://hardhat.org
  
  // SPDX-License-Identifier: MIT
  
  // File @openzeppelin/contracts/utils/Context.sol@v4.9.3
  
  // Original license: SPDX_License_Identifier: MIT
  // OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
  
  pragma solidity ^0.8.0;
  
  /**
   * @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;
      }
  }
  
  
  // File @openzeppelin/contracts/access/Ownable.sol@v4.9.3
  
  // Original license: SPDX_License_Identifier: MIT
  // OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)
  
  pragma solidity ^0.8.0;
  
  /**
   * @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() {
          _transferOwnership(_msgSender());
      }
  
      /**
       * @dev Throws if called by any account other than the owner.
       */
      modifier onlyOwner() {
          _checkOwner();
          _;
      }
  
      /**
       * @dev Returns the address of the current owner.
       */
      function owner() public view virtual returns (address) {
          return _owner;
      }
  
      /**
       * @dev Throws if the sender is not the owner.
       */
      function _checkOwner() internal view virtual {
          require(owner() == _msgSender(), "Ownable: caller is not the owner");
      }
  
      /**
       * @dev Leaves the contract without owner. It will not be possible to call
       * `onlyOwner` functions. Can only be called by the current owner.
       *
       * NOTE: Renouncing ownership will leave the contract without an owner,
       * thereby disabling any functionality that is only available to the owner.
       */
      function renounceOwnership() public virtual onlyOwner {
          _transferOwnership(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");
          _transferOwnership(newOwner);
      }
  
      /**
       * @dev Transfers ownership of the contract to a new account (`newOwner`).
       * Internal function without access restriction.
       */
      function _transferOwnership(address newOwner) internal virtual {
          address oldOwner = _owner;
          _owner = newOwner;
          emit OwnershipTransferred(oldOwner, newOwner);
      }
  }
  
  
  // File @openzeppelin/contracts/token/ERC20/IERC20.sol@v4.9.3
  
  // Original license: SPDX_License_Identifier: MIT
  // OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)
  
  pragma solidity ^0.8.0;
  
  /**
   * @dev Interface of the ERC20 standard as defined in the EIP.
   */
  interface IERC20 {
      /**
       * @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 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 `to`.
       *
       * Returns a boolean value indicating whether the operation succeeded.
       *
       * Emits a {Transfer} event.
       */
      function transfer(address to, 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 `from` to `to` 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 from, address to, uint256 amount) external returns (bool);
  }
  
  
  // File @openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol@v4.9.3
  
  // Original license: SPDX_License_Identifier: MIT
  // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
  
  pragma solidity ^0.8.0;
  
  /**
   * @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);
  }
  
  
  // File @openzeppelin/contracts/token/ERC20/ERC20.sol@v4.9.3
  
  // Original license: SPDX_License_Identifier: MIT
  // OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.sol)
  
  pragma solidity ^0.8.0;
  
  
  
  /**
   * @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.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
   * to implement supply mechanisms].
   *
   * The default value of {decimals} is 18. To change this, you should override
   * this function so it returns a different value.
   *
   * We have followed general OpenZeppelin Contracts guidelines: functions revert
   * instead 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}.
       *
       * 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 default value returned by this function, unless
       * it's 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:
       *
       * - `to` cannot be the zero address.
       * - the caller must have a balance of at least `amount`.
       */
      function transfer(address to, uint256 amount) public virtual override returns (bool) {
          address owner = _msgSender();
          _transfer(owner, to, 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}.
       *
       * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
       * `transferFrom`. This is semantically equivalent to an infinite approval.
       *
       * Requirements:
       *
       * - `spender` cannot be the zero address.
       */
      function approve(address spender, uint256 amount) public virtual override returns (bool) {
          address owner = _msgSender();
          _approve(owner, 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}.
       *
       * NOTE: Does not update the allowance if the current allowance
       * is the maximum `uint256`.
       *
       * Requirements:
       *
       * - `from` and `to` cannot be the zero address.
       * - `from` must have a balance of at least `amount`.
       * - the caller must have allowance for ``from``'s tokens of at least
       * `amount`.
       */
      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;
      }
  
      /**
       * @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) {
          address owner = _msgSender();
          _approve(owner, spender, allowance(owner, 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) {
          address owner = _msgSender();
          uint256 currentAllowance = allowance(owner, spender);
          require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
          unchecked {
              _approve(owner, spender, currentAllowance - subtractedValue);
          }
  
          return true;
      }
  
      /**
       * @dev Moves `amount` of tokens from `from` to `to`.
       *
       * 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:
       *
       * - `from` cannot be the zero address.
       * - `to` cannot be the zero address.
       * - `from` must have a balance of at least `amount`.
       */
      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;
              // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
              // decrementing then incrementing.
              _balances[to] += amount;
          }
  
          emit Transfer(from, to, amount);
  
          _afterTokenTransfer(from, to, 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;
          unchecked {
              // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
              _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;
              // Overflow not possible: amount <= accountBalance <= totalSupply.
              _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 Updates `owner` s allowance for `spender` based on spent `amount`.
       *
       * Does not update the allowance amount in case of infinite allowance.
       * Revert if not enough allowance is available.
       *
       * Might emit an {Approval} event.
       */
      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);
              }
          }
      }
  
      /**
       * @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 {}
  }
  
  
  // File @openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol@v4.9.3
  
  // Original license: SPDX_License_Identifier: MIT
  // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/extensions/ERC20Burnable.sol)
  
  pragma solidity ^0.8.0;
  
  
  /**
   * @dev Extension of {ERC20} that allows token holders to destroy both their own
   * tokens and those that they have an allowance for, in a way that can be
   * recognized off-chain (via event analysis).
   */
  abstract contract ERC20Burnable is Context, ERC20 {
      /**
       * @dev Destroys `amount` tokens from the caller.
       *
       * See {ERC20-_burn}.
       */
      function burn(uint256 amount) public virtual {
          _burn(_msgSender(), amount);
      }
  
      /**
       * @dev Destroys `amount` tokens from `account`, deducting from the caller's
       * allowance.
       *
       * See {ERC20-_burn} and {ERC20-allowance}.
       *
       * Requirements:
       *
       * - the caller must have allowance for ``accounts``'s tokens of at least
       * `amount`.
       */
      function burnFrom(address account, uint256 amount) public virtual {
          _spendAllowance(account, _msgSender(), amount);
          _burn(account, amount);
      }
  }
  
  
  // File @openzeppelin/contracts/token/ERC20/extensions/IERC20Permit.sol@v4.9.3
  
  // Original license: SPDX_License_Identifier: MIT
  // OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/IERC20Permit.sol)
  
  pragma solidity ^0.8.0;
  
  /**
   * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
   * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
   *
   * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
   * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
   * need to send a transaction, and thus is not required to hold Ether at all.
   */
  interface IERC20Permit {
      /**
       * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
       * given ``owner``'s signed approval.
       *
       * IMPORTANT: The same issues {IERC20-approve} has related to transaction
       * ordering also apply here.
       *
       * Emits an {Approval} event.
       *
       * Requirements:
       *
       * - `spender` cannot be the zero address.
       * - `deadline` must be a timestamp in the future.
       * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
       * over the EIP712-formatted function arguments.
       * - the signature must use ``owner``'s current nonce (see {nonces}).
       *
       * For more information on the signature format, see the
       * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
       * section].
       */
      function permit(
          address owner,
          address spender,
          uint256 value,
          uint256 deadline,
          uint8 v,
          bytes32 r,
          bytes32 s
      ) external;
  
      /**
       * @dev Returns the current nonce for `owner`. This value must be
       * included whenever a signature is generated for {permit}.
       *
       * Every successful call to {permit} increases ``owner``'s nonce by one. This
       * prevents a signature from being used multiple times.
       */
      function nonces(address owner) external view returns (uint256);
  
      /**
       * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
       */
      // solhint-disable-next-line func-name-mixedcase
      function DOMAIN_SEPARATOR() external view returns (bytes32);
  }
  
  
  // File @openzeppelin/contracts/utils/Address.sol@v4.9.3
  
  // Original license: SPDX_License_Identifier: MIT
  // OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)
  
  pragma solidity ^0.8.1;
  
  /**
   * @dev Collection of functions related to the address type
   */
  library Address {
      /**
       * @dev Returns true if `account` is a contract.
       *
       * [IMPORTANT]
       * ====
       * It is unsafe to assume that an address for which this function returns
       * false is an externally-owned account (EOA) and not a contract.
       *
       * Among others, `isContract` will return false for the following
       * types of addresses:
       *
       *  - an externally-owned account
       *  - a contract in construction
       *  - an address where a contract will be created
       *  - an address where a contract lived, but was destroyed
       *
       * Furthermore, `isContract` will also return true if the target contract within
       * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
       * which only has an effect at the end of a transaction.
       * ====
       *
       * [IMPORTANT]
       * ====
       * You shouldn't rely on `isContract` to protect against flash loan attacks!
       *
       * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
       * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
       * constructor.
       * ====
       */
      function isContract(address account) internal view returns (bool) {
          // This method relies on extcodesize/address.code.length, which returns 0
          // for contracts in construction, since the code is only stored at the end
          // of the constructor execution.
  
          return account.code.length > 0;
      }
  
      /**
       * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
       * `recipient`, forwarding all available gas and reverting on errors.
       *
       * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
       * of certain opcodes, possibly making contracts go over the 2300 gas limit
       * imposed by `transfer`, making them unable to receive funds via
       * `transfer`. {sendValue} removes this limitation.
       *
       * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
       *
       * IMPORTANT: because control is transferred to `recipient`, care must be
       * taken to not create reentrancy vulnerabilities. Consider using
       * {ReentrancyGuard} or the
       * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
       */
      function sendValue(address payable recipient, uint256 amount) internal {
          require(address(this).balance >= amount, "Address: insufficient balance");
  
          (bool success, ) = recipient.call{value: amount}("");
          require(success, "Address: unable to send value, recipient may have reverted");
      }
  
      /**
       * @dev Performs a Solidity function call using a low level `call`. A
       * plain `call` is an unsafe replacement for a function call: use this
       * function instead.
       *
       * If `target` reverts with a revert reason, it is bubbled up by this
       * function (like regular Solidity function calls).
       *
       * Returns the raw returned data. To convert to the expected return value,
       * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
       *
       * Requirements:
       *
       * - `target` must be a contract.
       * - calling `target` with `data` must not revert.
       *
       * _Available since v3.1._
       */
      function functionCall(address target, bytes memory data) internal returns (bytes memory) {
          return functionCallWithValue(target, data, 0, "Address: low-level call failed");
      }
  
      /**
       * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
       * `errorMessage` as a fallback revert reason when `target` reverts.
       *
       * _Available since v3.1._
       */
      function functionCall(
          address target,
          bytes memory data,
          string memory errorMessage
      ) internal returns (bytes memory) {
          return functionCallWithValue(target, data, 0, errorMessage);
      }
  
      /**
       * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
       * but also transferring `value` wei to `target`.
       *
       * Requirements:
       *
       * - the calling contract must have an ETH balance of at least `value`.
       * - the called Solidity function must be `payable`.
       *
       * _Available since v3.1._
       */
      function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
          return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
      }
  
      /**
       * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
       * with `errorMessage` as a fallback revert reason when `target` reverts.
       *
       * _Available since v3.1._
       */
      function functionCallWithValue(
          address target,
          bytes memory data,
          uint256 value,
          string memory errorMessage
      ) internal returns (bytes memory) {
          require(address(this).balance >= value, "Address: insufficient balance for call");
          (bool success, bytes memory returndata) = target.call{value: value}(data);
          return verifyCallResultFromTarget(target, success, returndata, errorMessage);
      }
  
      /**
       * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
       * but performing a static call.
       *
       * _Available since v3.3._
       */
      function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
          return functionStaticCall(target, data, "Address: low-level static call failed");
      }
  
      /**
       * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
       * but performing a static call.
       *
       * _Available since v3.3._
       */
      function functionStaticCall(
          address target,
          bytes memory data,
          string memory errorMessage
      ) internal view returns (bytes memory) {
          (bool success, bytes memory returndata) = target.staticcall(data);
          return verifyCallResultFromTarget(target, success, returndata, errorMessage);
      }
  
      /**
       * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
       * but performing a delegate call.
       *
       * _Available since v3.4._
       */
      function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
          return functionDelegateCall(target, data, "Address: low-level delegate call failed");
      }
  
      /**
       * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
       * but performing a delegate call.
       *
       * _Available since v3.4._
       */
      function functionDelegateCall(
          address target,
          bytes memory data,
          string memory errorMessage
      ) internal returns (bytes memory) {
          (bool success, bytes memory returndata) = target.delegatecall(data);
          return verifyCallResultFromTarget(target, success, returndata, errorMessage);
      }
  
      /**
       * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
       * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
       *
       * _Available since v4.8._
       */
      function verifyCallResultFromTarget(
          address target,
          bool success,
          bytes memory returndata,
          string memory errorMessage
      ) internal view returns (bytes memory) {
          if (success) {
              if (returndata.length == 0) {
                  // only check isContract if the call was successful and the return data is empty
                  // otherwise we already know that it was a contract
                  require(isContract(target), "Address: call to non-contract");
              }
              return returndata;
          } else {
              _revert(returndata, errorMessage);
          }
      }
  
      /**
       * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
       * revert reason or using the provided one.
       *
       * _Available since v4.3._
       */
      function verifyCallResult(
          bool success,
          bytes memory returndata,
          string memory errorMessage
      ) internal pure returns (bytes memory) {
          if (success) {
              return returndata;
          } else {
              _revert(returndata, errorMessage);
          }
      }
  
      function _revert(bytes memory returndata, string memory errorMessage) private pure {
          // Look for revert reason and bubble it up if present
          if (returndata.length > 0) {
              // The easiest way to bubble the revert reason is using memory via assembly
              /// @solidity memory-safe-assembly
              assembly {
                  let returndata_size := mload(returndata)
                  revert(add(32, returndata), returndata_size)
              }
          } else {
              revert(errorMessage);
          }
      }
  }
  
  
  // File @openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol@v4.9.3
  
  // Original license: SPDX_License_Identifier: MIT
  // OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)
  
  pragma solidity ^0.8.0;
  
  
  
  /**
   * @title SafeERC20
   * @dev Wrappers around ERC20 operations that throw on failure (when the token
   * contract returns false). Tokens that return no value (and instead revert or
   * throw on failure) are also supported, non-reverting calls are assumed to be
   * successful.
   * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
   * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
   */
  library SafeERC20 {
      using Address for address;
  
      /**
       * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
       * non-reverting calls are assumed to be successful.
       */
      function safeTransfer(IERC20 token, address to, uint256 value) internal {
          _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
      }
  
      /**
       * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
       * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
       */
      function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
          _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
      }
  
      /**
       * @dev Deprecated. This function has issues similar to the ones found in
       * {IERC20-approve}, and its usage is discouraged.
       *
       * Whenever possible, use {safeIncreaseAllowance} and
       * {safeDecreaseAllowance} instead.
       */
      function safeApprove(IERC20 token, address spender, uint256 value) internal {
          // safeApprove should only be called when setting an initial allowance,
          // or when resetting it to zero. To increase and decrease it, use
          // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
          require(
              (value == 0) || (token.allowance(address(this), spender) == 0),
              "SafeERC20: approve from non-zero to non-zero allowance"
          );
          _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
      }
  
      /**
       * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
       * non-reverting calls are assumed to be successful.
       */
      function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
          uint256 oldAllowance = token.allowance(address(this), spender);
          _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
      }
  
      /**
       * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
       * non-reverting calls are assumed to be successful.
       */
      function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
          unchecked {
              uint256 oldAllowance = token.allowance(address(this), spender);
              require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
              _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
          }
      }
  
      /**
       * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
       * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
       * to be set to zero before setting it to a non-zero value, such as USDT.
       */
      function forceApprove(IERC20 token, address spender, uint256 value) internal {
          bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);
  
          if (!_callOptionalReturnBool(token, approvalCall)) {
              _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));
              _callOptionalReturn(token, approvalCall);
          }
      }
  
      /**
       * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
       * Revert on invalid signature.
       */
      function safePermit(
          IERC20Permit token,
          address owner,
          address spender,
          uint256 value,
          uint256 deadline,
          uint8 v,
          bytes32 r,
          bytes32 s
      ) internal {
          uint256 nonceBefore = token.nonces(owner);
          token.permit(owner, spender, value, deadline, v, r, s);
          uint256 nonceAfter = token.nonces(owner);
          require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
      }
  
      /**
       * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
       * on the return value: the return value is optional (but if data is returned, it must not be false).
       * @param token The token targeted by the call.
       * @param data The call data (encoded using abi.encode or one of its variants).
       */
      function _callOptionalReturn(IERC20 token, bytes memory data) private {
          // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
          // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
          // the target address contains contract code and also asserts for success in the low-level call.
  
          bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
          require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
      }
  
      /**
       * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
       * on the return value: the return value is optional (but if data is returned, it must not be false).
       * @param token The token targeted by the call.
       * @param data The call data (encoded using abi.encode or one of its variants).
       *
       * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
       */
      function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
          // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
          // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
          // and not revert is the subcall reverts.
  
          (bool success, bytes memory returndata) = address(token).call(data);
          return
              success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token));
      }
  }
  
  
  // File contracts/interfaces/IBase.sol
  
  // Original license: SPDX_License_Identifier: MIT
  
  pragma solidity ^0.8.4;
  
  interface IBase {
      /// - antiBotParam
      /// 1. holdLimit
      /// 2. txLimit
      /// 3. antiDumpLimit
      /// 4. antiSniperOn
      /// 5. blacklistOn
      ///
      /// - taxParam
      /// 1. dexRouter: uniswap or sushiswap
      /// 2. pairedToken: eth or usdc
      /// 3. taxPayAccount
      /// 4. treasuryAccount
      /// 5. buyTax
      /// 6. sellTax
      /// 7. treasuryTax
      ///
      /// - distribParam
      /// 1. totalSupply
      /// 2. teamAccount
      /// 3. teamAllocPercent
      ///
      /// - lpParam
      /// 1. isLPBurn
      /// 2. isTradingDelayed
      /// 3. isTradingDisabled
      /// 4. pairedTokenAmount
      /// 5. lockPeriod
      struct TokenLaunchConf {
          string uuid;
          string name;
          string symbol;
          bytes distribParam;
          bytes antiBotParam;
          bytes taxParam;
          bytes lpParam;
      }
  
      // Configuration inherited from the factory contract
      struct InheritedConf {
          uint16 autoBurnFirstPercent;
          uint16 autoBurnSecondPercent;
          uint16 autoBurnThirdPercent;
          uint16 thresholdPercent;
          uint16 maxBuyTaxAfter;
          uint16 maxSellTaxAfter;
          uint16 maxTreasuryTaxAfter;
          uint16 bankPadTax;
          uint16 maxTaxToRenounce;
          uint32 bankPadTaxApplyPeriod;
          uint32 taxWhitelistApplyDelay;
          uint32 tradingDelayTime;
          uint32 tradingDisableTime;
      }
  }
  
  
  // File contracts/interfaces/IERC20FactoryByBankPad.sol
  
  // Original license: SPDX_License_Identifier: MIT
  
  pragma solidity ^0.8.4;
  
  interface IERC20FactoryByBankPad {
      /**
       * @notice function {servicePayAccount}
       *
       * Return BankPad service pay account
       *
       * @return address service pay account
       */
      function servicePayAccount() external view returns (address payable);
  
      /**
       * @dev function {maxTeamAllocForUUID}
       *
       * Return max team distribution percentage for the given `uuid` of token
       * whitelisted token will return its max allocation percent
       * return `_maxTeamAlloc` for others
       *
       * @param uuid token UUID
       */
      function maxTeamAllocForUUID(
          string calldata uuid
      ) external view returns (uint16);
  }
  
  
  // File contracts/token/AntiBotHelper.sol
  
  // Original license: SPDX_License_Identifier: MIT
  
  pragma solidity ^0.8.0;
  
  /**
   * @notice Anti-Bot Helper
   * Max TX Amount feature
   * Max Wallet Amount feature
   * Sniper auto-burn feature
   */
  abstract contract AntiBotHelper is Ownable {
      /// @dev Minimum value that can be set for the max transaction limit - 0.25%
      uint16 private constant MIN__MAX_TX_LIMIT = 25;
      /// @dev Maximum value that can be set for the max transaction limit - 100%
      uint16 private constant MAX__MAX_TX_LIMIT = 10000;
      /// @dev Minimum value that can be set for the max hold limit - 0.25%
      uint16 private constant MIN__MAX_HOLD_LIMIT = 25;
      /// @dev Maximum value that can be set for the max hold limit - 100%
      uint16 private constant MAX__MAX_HOLD_LIMIT = 10000;
      /// @dev Minimum value that can be set for the anti-dump limit - 0.25%
      uint16 internal constant MIN_ANTI_DUMP_LIMIT = 25;
      /// @dev Maximum value that can be set for the anti-dump limit - 100%
      uint16 private constant MAX_ANTI_DUMP_LIMIT = 10000;
  
      /// @dev Anti-snipe tax is burned, reducing total supply
      /// 1. 20% tax on buys in the first block
      /// 2. Reducing to 13.33% in the second block
      /// 3. Reducing to 6.66% in the third
      /// 4. Finally 0% from the fourth block on
      uint16 internal _autoBurnFirstPercent;
      uint16 internal _autoBurnSecondPercent;
      uint16 internal _autoBurnThirdPercent;
  
      uint16 internal _maxTxLimit;
      uint16 internal _maxHoldLimit;
      uint16 internal _antiDumpLimit;
  
      bool internal _isBlacklistOn;
      bool internal _isAntiSniperOn;
      bool internal _isTradingDelayed;
      bool internal _isTradingDisabled;
  
      uint256 internal _firstBuyAt;
      uint256 internal _secondBuyAt;
      uint256 internal _thirdBuyAt;
  
      mapping(address => bool) internal _isExcludedFromTxLimit;
      mapping(address => bool) internal _isExcludedFromHoldLimit;
      mapping(address => bool) internal _blacklist;
  
      event AccountBlacklisted(address account, bool flag);
      event AntiDumpLimitUpdated(uint16 antiDumpLimit);
      event ExcludedFromHoldLimit(address account, bool flag);
      event ExcludedFromTxLimit(address account, bool flag);
      event MaxLimitUpdated(uint16 maxHoldLimit, uint16 maxTxLimit);
      event TradingDelayFinished();
      event TradingEnabled();
  
      /// @dev Initialize anti bot configuration
      /// abi encoded param
      /// 1. holdLimit
      /// 2. txLimit
      /// 3. antiDumpLimit
      /// 4. antiSniperOn
      /// 5. blacklistOn
      function _initializeAntiBot(bytes memory param) internal {
          (
              uint16 holdLimit,
              uint16 txLimit,
              uint16 antiDumpLimit_,
              bool antiSniperOn,
              bool blacklistOn
          ) = abi.decode(param, (uint16, uint16, uint16, bool, bool));
  
          require(
              txLimit <= MAX__MAX_TX_LIMIT && txLimit >= MIN__MAX_TX_LIMIT,
              "tx limit out of range"
          );
          require(
              holdLimit <= MAX__MAX_HOLD_LIMIT &&
                  holdLimit >= MIN__MAX_HOLD_LIMIT,
              "hold limit out of range"
          );
          require(txLimit <= holdLimit, "tx limit exceeds hold limit");
          require(
              antiDumpLimit_ == 0 ||
                  (antiDumpLimit_ >= MIN_ANTI_DUMP_LIMIT &&
                      antiDumpLimit_ <= MAX_ANTI_DUMP_LIMIT),
              "anti-dump limit out of range"
          );
  
          _maxTxLimit = txLimit;
          _maxHoldLimit = holdLimit;
          _antiDumpLimit = antiDumpLimit_;
          _isAntiSniperOn = antiSniperOn;
          _isBlacklistOn = blacklistOn;
      }
  
      /// @dev Return anti-sniper auto-burn percent
      function _antiSniperAutoBurn() internal returns (uint16) {
          if (!_isAntiSniperOn) {
              if (_firstBuyAt == 0) _firstBuyAt = block.timestamp;
              return 0;
          }
          uint256 blockTime = block.timestamp;
  
          if (blockTime == _thirdBuyAt) return _autoBurnThirdPercent;
          if (blockTime == _secondBuyAt) return _autoBurnSecondPercent;
          if (blockTime == _firstBuyAt) return _autoBurnFirstPercent;
          if (_thirdBuyAt > 0) return 0;
          if (_secondBuyAt > 0) {
              _thirdBuyAt = block.timestamp;
              return _autoBurnThirdPercent;
          }
          if (_firstBuyAt > 0) {
              _secondBuyAt = block.timestamp;
              return _autoBurnSecondPercent;
          }
          _firstBuyAt = block.timestamp;
          return _autoBurnFirstPercent;
      }
  
      /// @notice Exclude / Include the multiple accounts from max tx limit
      /// @dev Only callable by owner
      function batchExcludeFromTxLimit(
          address[] calldata accounts,
          bool flag
      ) external onlyOwner {
          uint256 len = accounts.length;
          for (uint256 i; i < len; ) {
              address account = accounts[i];
              _isExcludedFromTxLimit[account] = flag;
  
              unchecked {
                  ++i;
              }
  
              emit ExcludedFromTxLimit(account, flag);
          }
      }
  
      /// @notice Exclude / Include the multiple accounts from max wallet limit
      /// @dev Only callable by owner
      function batchExcludeFromHoldLimit(
          address[] calldata accounts,
          bool flag
      ) external onlyOwner {
          uint256 len = accounts.length;
          for (uint256 i; i < len; ) {
              address account = accounts[i];
              _isExcludedFromHoldLimit[account] = flag;
  
              unchecked {
                  ++i;
              }
  
              emit ExcludedFromHoldLimit(account, flag);
          }
      }
  
      /// @notice Check if the account is excluded from max hold & wallet limit
      /// @return bool excluded from max hold limit
      /// @return bool excluded from max tx limit
      function isExcludedFromLimit(
          address account
      ) external view returns (bool, bool) {
          return (
              _isExcludedFromHoldLimit[account],
              _isExcludedFromTxLimit[account]
          );
      }
  
      /// @notice Update anti-dump limit
      /// @param limit new anti-dump limit
      function updateAntiDumpLimit(uint16 limit) external onlyOwner {
          require(_antiDumpLimit != 0, "anti-dump not enabled");
  
          require(
              limit >= MIN_ANTI_DUMP_LIMIT && limit <= MAX_ANTI_DUMP_LIMIT,
              "anti-dump limit out of range"
          );
  
          _antiDumpLimit = limit;
  
          emit AntiDumpLimitUpdated(limit);
      }
  
      /// @notice View anti-dump limit
      /// @return uint16 anti-dump limit percent
      function antiDumpLimit() external view returns (uint16) {
          return _antiDumpLimit;
      }
  
      /**
       * @notice Check if the anti-dump feature is enabled in the token
       */
      function isAntiDumpEnabled() external view returns (bool) {
          return _antiDumpLimit >= MIN_ANTI_DUMP_LIMIT;
      }
  
      /**
       * @notice Blacklist account
       */
      function batchBlacklist(
          address[] calldata accounts,
          bool flag
      ) external onlyOwner {
          require(_isBlacklistOn, "blacklist add-on disabled");
          uint256 len = accounts.length;
          for (uint256 i; i < len; ) {
              _blacklist[accounts[i]] = flag;
              emit AccountBlacklisted(accounts[i], flag);
              unchecked {
                  ++i;
              }
          }
      }
  
      /**
       * @notice Check if the given account is blacklisted
       */
      function isAccountBlacklisted(
          address account
      ) external view returns (bool) {
          return _blacklist[account];
      }
  
      /**
       * @notice Check if the blacklist add-on is enabled in the token
       */
      function isBlacklistEnabled() external view returns (bool) {
          return _isBlacklistOn;
      }
  
      /// @notice Update max hold limit & max tx limit
      /// @param holdLimit new max hold limit
      /// @param txLimit new max tx limit
      function updateMaxLimit(
          uint16 holdLimit,
          uint16 txLimit
      ) external onlyOwner {
          require(holdLimit >= txLimit, "tx limit exceeds hold limit");
          require(
              _maxHoldLimit <= holdLimit && _maxTxLimit <= txLimit,
              "increase only"
          );
          require(txLimit <= MAX__MAX_TX_LIMIT, "tx limit out of range");
          require(holdLimit <= MAX__MAX_HOLD_LIMIT, "hold limit out of range");
  
          _maxHoldLimit = holdLimit;
          _maxTxLimit = txLimit;
  
          emit MaxLimitUpdated(holdLimit, txLimit);
      }
  
      /// @notice View max hold limit & max tx limit
      /// @return uint16 max hold limit percent
      /// @return uint16 max tx limit percent
      function maxLimit() external view returns (uint16, uint16) {
          return (_maxHoldLimit, _maxTxLimit);
      }
  
      /// @notice Enable trading
      function enableTrading() external onlyOwner {
          require(_isTradingDisabled, "already enabled");
          _isTradingDisabled = false;
  
          emit TradingEnabled();
      }
  
      /// @notice View anti-bot mechanism flags
      /// @return bool {_isAntiSniperOn}
      /// @return bool {_isTradingDelayed}
      /// @return bool {_isTradingDisabled}
      function antiBotFlags() external view returns (bool, bool, bool) {
          return (_isAntiSniperOn, _isTradingDelayed, _isTradingDisabled);
      }
  
      /**
       * @dev function {snipeAutoBurnPercents}
       *
       * Return anti-snipe auto burn percent values for 3 steps
       *
       * @return uint16 first auto burn percent
       * @return uint16 second auto burn percent
       * @return uint16 third auto burn percent
       */
      function snipeAutoBurnPercents()
          external
          view
          returns (uint16, uint16, uint16)
      {
          return (
              _autoBurnFirstPercent,
              _autoBurnSecondPercent,
              _autoBurnThirdPercent
          );
      }
  }
  
  
  // File contracts/interfaces/IDexRouter.sol
  
  // Original license: SPDX_License_Identifier: MIT
  
  pragma solidity ^0.8.4;
  
  interface IDexFactory {
      function createPair(
          address tokenA,
          address tokenB
      ) external returns (address pair);
  }
  
  interface IDexRouter {
      function factory() external pure returns (address);
  
      function WETH() external pure returns (address);
  
      function swapExactTokensForETHSupportingFeeOnTransferTokens(
          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 swapExactTokensForTokensSupportingFeeOnTransferTokens(
          uint amountIn,
          uint amountOutMin,
          address[] calldata path,
          address to,
          uint deadline
      ) external;
  
      function addLiquidityETH(
          address token,
          uint256 amountTokenDesired,
          uint256 amountTokenMin,
          uint256 amountETHMin,
          address to,
          uint256 deadline
      )
          external
          payable
          returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);
  
      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 getAmountsOut(
          uint amountIn,
          address[] calldata path
      ) external view returns (uint[] memory amounts);
  
      function removeLiquidity(
          address tokenA,
          address tokenB,
          uint liquidity,
          uint amountAMin,
          uint amountBMin,
          address to,
          uint deadline
      ) external returns (uint amountA, uint amountB);
  }
  
  
  // File contracts/token/TaxHelper.sol
  
  // Original license: SPDX_License_Identifier: MIT
  
  pragma solidity ^0.8.0;
  
  
  /**
   * @notice Tax Helper
   * Marketing fee
   * Burn fee
   * Fee in buy/sell/transfer separately
   */
  abstract contract TaxHelper is Ownable {
      using Address for address payable;
      address internal constant ETH_ADDRESS =
          0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
  
      bool internal _bankpadFeeApplied = true;
      uint16 internal _buyTax;
      uint16 internal _sellTax;
      uint16 internal _treasuryTax;
  
      /// @dev Max buy tax after token launched
      uint16 internal _maxBuyTaxAfter;
      /// @dev Max sell tax after token launched
      uint16 internal _maxSellTaxAfter;
      /// @dev Max treasury tax after token launched
      uint16 internal _maxTreasuryTaxAfter;
  
      /// @dev Bankpad tax is set on top buy / sell / treasury tax as a service fee
      uint16 internal _bankPadTax;
  
      address internal _dexRouter;
      address internal _taxPayAccount;
      address internal _treasuryAccount;
      address internal _baseAmmPair;
      address internal _basePairedToken;
  
      mapping(address => bool) internal _isExcludedFromTax;
      mapping(address => bool) internal _isAmmPair;
  
      event ExcludedFromTax(address account, bool flag);
      event NewAmmPair(address pair, bool flag);
      event TaxesUpdated(uint16 buyTax, uint16 sellTax, uint16 treasuryTax);
  
      /// @dev Initialize tax configuration
      /// abi encoded param
      /// 1. dexRouter: uniswap or sushiswap
      /// 2. pairedToken: eth or usdc
      /// 3. taxPayAccount
      /// 4. buyTax
      /// 5. sellTax
      function _initializeTax(bytes memory param) internal {
          (
              address dexRouter,
              address pairedToken,
              address taxPayAccount,
              address treasuryAccount,
              uint16 buyTax,
              uint16 sellTax,
              uint16 treasuryTax
          ) = abi.decode(
                  param,
                  (address, address, address, address, uint16, uint16, uint16)
              );
  
          // tax pay account and treasury account are only available when buy/sell tax, treasury tax is greater then 0
          if (buyTax > 0 || sellTax > 0)
              require(taxPayAccount != address(0), "invalid tax pay account");
          if (treasuryTax > 0)
              require(treasuryAccount != address(0), "invalid treasury account");
  
          // check if tax pay account and treasury account can receive ETH when the base pair token is ETH
          if (pairedToken == ETH_ADDRESS) {
              payable(taxPayAccount).sendValue(0);
              payable(treasuryAccount).sendValue(0);
          }
  
          _dexRouter = dexRouter;
          // pair with ETH or any other stable coin
          address lpPair = IDexFactory(IDexRouter(dexRouter).factory())
              .createPair(
                  address(this),
                  pairedToken == ETH_ADDRESS
                      ? IDexRouter(dexRouter).WETH()
                      : pairedToken
              );
  
          _baseAmmPair = lpPair;
          _basePairedToken = pairedToken;
          _taxPayAccount = taxPayAccount;
          _treasuryAccount = treasuryAccount;
  
          _buyTax = buyTax;
          _sellTax = sellTax;
          _treasuryTax = treasuryTax;
  
          _isAmmPair[lpPair] = true;
      }
  
      /// @notice Update buy / sell / treasury tax
      /// @dev new tax values should not be greater than the `taxAfterLimit`
      /// @param buyTax new buy tax value
      /// @param sellTax new sell tax value
      /// @param treasuryTax new treasury tax value
      function updateTaxes(
          uint16 buyTax,
          uint16 sellTax,
          uint16 treasuryTax
      ) external onlyOwner {
          // gas-saving code
          uint16 buyTax_ = _buyTax;
          uint16 sellTax_ = _sellTax;
          uint16 treasuryTax_ = _treasuryTax;
  
          if (buyTax > buyTax_)
              require(buyTax <= _maxBuyTaxAfter, "invalid buyTax");
          if (sellTax > sellTax_)
              require(sellTax <= _maxSellTaxAfter, "invalid sellTax");
          if (treasuryTax > treasuryTax_)
              require(treasuryTax <= _maxTreasuryTaxAfter, "invalid treasuryTax");
  
          _buyTax = buyTax;
          _sellTax = sellTax;
          _treasuryTax = treasuryTax;
  
          emit TaxesUpdated(buyTax, sellTax, treasuryTax);
      }
  
      /// @notice View taxes applied to the token
      /// @return uint16 {_buyTax}
      /// @return uint16 {_sellTax}
      /// @return uint16 {_treasuryTax}
      function taxes() external view returns (uint16, uint16, uint16) {
          return (_buyTax, _sellTax, _treasuryTax);
      }
  
      /// @notice Exclude / Include the multiple accounts from tax
      /// @dev Only callable by owner
      function batchExcludeFromTax(
          address[] calldata accounts,
          bool flag
      ) external onlyOwner {
          uint256 len = accounts.length;
          for (uint256 i; i < len; ) {
              address account = accounts[i];
              _isExcludedFromTax[account] = flag;
  
              unchecked {
                  ++i;
              }
  
              emit ExcludedFromTax(account, flag);
          }
      }
  
      /// @notice Check if the account is excluded from the fees
      /// @param account: the account to be checked
      function isExcludedFromTax(address account) external view returns (bool) {
          return _isExcludedFromTax[account];
      }
  
      /// @notice Check if the {pair} is AMM pair
      function isAmmPair(address pair) external view returns (bool) {
          return _isAmmPair[pair];
      }
  
      /// @notice View tax receive accounts
      /// @return address buy/sell tax pay account
      /// @return address treasury tax pay account
      function taxAccounts() external view returns (address, address) {
          return (_taxPayAccount, _treasuryAccount);
      }
  
      /// @notice View amm related configuration addresses
      /// @return address dex router address
      /// @return address base paired token address
      /// @return address base pair address from the dex router
      function ammAddresses() external view returns (address, address, address) {
          return (_dexRouter, _basePairedToken, _baseAmmPair);
      }
  
      /**
       * @dev function {taxLimits}
       *
       * Return tax limits compared with current value and taxAfterLimits
       *
       * @return uint16 max buy tax limit
       * @return uint16 max sell tax limit
       * @return uint16 max treasury tax limit
       */
      function taxLimits() external view returns (uint16, uint16, uint16) {
          uint16 maxBuyTax = _buyTax < _maxBuyTaxAfter
              ? _maxBuyTaxAfter
              : _buyTax;
          uint16 maxSellTax = _sellTax < _maxSellTaxAfter
              ? _maxSellTaxAfter
              : _sellTax;
          uint16 maxTreasuryTax = _treasuryTax < _maxTreasuryTaxAfter
              ? _maxTreasuryTaxAfter
              : _treasuryTax;
          return (maxBuyTax, maxSellTax, maxTreasuryTax);
      }
  
      /**
       * @dev function {taxLimits}
       *
       * Return tax limits which are used after token launched
       *
       * @return uint16 max buy tax limit
       * @return uint16 max sell tax limit
       * @return uint16 max treasury tax limit
       */
      function taxAfterLimits() external view returns (uint16, uint16, uint16) {
          return (_maxBuyTaxAfter, _maxSellTaxAfter, _maxTreasuryTaxAfter);
      }
  
      function bankPadTax() external view returns (uint16) {
          return _bankPadTax;
      }
  }
  
  
  // File contracts/token/ERC20ByBankPadBase.sol
  
  // Original license: SPDX_License_Identifier: MIT
  
  pragma solidity ^0.8.0;
  
  
  
  
  
  contract ERC20ByBankPadBase is AntiBotHelper, TaxHelper, IBase, ERC20Burnable {
      uint16 internal constant DENOMINATOR = 10000;
  
      string public bankUUID;
      address public immutable teamAccount;
  
      address public immutable bankPadFactory;
      bool internal _isLaunched;
      bool internal _isTaxConvertEnabled = true;
  
      /// @dev Ownership can be renounced only when buy/sell/treasury tax is below limit default 5%
      uint16 private _maxTaxToRenounce;
  
      /// @dev Bankpad tax is removed after some days default 15 days
      uint32 internal _bankPadTaxApplyPeriod;
      /// @dev Tax whitelist (exclude list) is not applied within some days after token launches default 2 days
      uint32 internal _taxWhitelistApplyDelay;
  
      /// @dev Token transfer is disabled for 1 mins once trading_delay flag is set
      uint32 internal _tradingDelayTime = 1 minutes;
      /// @dev Trading is disabled once {_isTradingDisabled} flag is set,
      /// it is unset automatically after 7 days if owner does not enable trading
      uint32 internal _tradingDisableTime = 7 days;
  
      /// @dev Threshold amount of accumlated tax until swap to pair token
      uint256 internal _thresholdAmount;
  
      /// @dev Token launched time
      uint256 internal _launchedAt;
  
      /**
       * @dev Throws if called by any account other than the owner.
       */
      modifier onlyFactory() {
          require(bankPadFactory == _msgSender(), "caller is not the factory");
          _;
      }
  
      constructor(
          address factory_,
          address deployer_,
          TokenLaunchConf memory tokenLaunchConf_,
          InheritedConf memory inheritedConf_
      ) ERC20(tokenLaunchConf_.name, tokenLaunchConf_.symbol) {
          bankUUID = tokenLaunchConf_.uuid;
          bankPadFactory = factory_;
  
          _transferOwnership(deployer_);
  
          _initializeAntiBot(tokenLaunchConf_.antiBotParam);
          _initializeTax(tokenLaunchConf_.taxParam);
          _copyInheritedConf(inheritedConf_);
  
          _isExcludedFromHoldLimit[_baseAmmPair] = true;
  
          (uint256 supply, address teamAccount_, uint16 teamAlloc) = abi.decode(
              tokenLaunchConf_.distribParam,
              (uint256, address, uint16)
          );
          teamAccount = teamAccount_;
  
          // threshold amount is 0.1% of the total supply
          _thresholdAmount = (supply * inheritedConf_.thresholdPercent) / DENOMINATOR;
  
          // Distribute to team
          if (teamAlloc > 0) {
              require(teamAccount_ != address(0), "invalid team account");
              require(
                  teamAlloc <=
                      IERC20FactoryByBankPad(factory_).maxTeamAllocForUUID(
                          tokenLaunchConf_.uuid
                      ),
                  "too much team alloc"
              );
              uint256 teamAllocAmount = (supply * teamAlloc) / DENOMINATOR;
              _mint(teamAccount_, teamAllocAmount);
              supply -= teamAllocAmount;
          }
  
          // Mint rest tokens to the factory contract to add liquidity
          _mint(factory_, supply);
      }
  
      /**
       * @notice function {preLaunch}
       *
       * Configure token contract with the factory configuration
       *
       * @param param configuration structure from the factory
       */
      function _copyInheritedConf(InheritedConf memory param) private {
          _autoBurnFirstPercent = param.autoBurnFirstPercent;
          _autoBurnSecondPercent = param.autoBurnSecondPercent;
          _autoBurnThirdPercent = param.autoBurnThirdPercent;
  
          _maxBuyTaxAfter = _buyTax < param.maxBuyTaxAfter ? _buyTax : param.maxBuyTaxAfter;
          _maxSellTaxAfter = _sellTax < param.maxSellTaxAfter ? _sellTax : param.maxSellTaxAfter;
          _maxTreasuryTaxAfter = _treasuryTax < param.maxTreasuryTaxAfter ? _treasuryTax : param.maxTreasuryTaxAfter;
  
          _bankPadTax = param.bankPadTax;
          _maxTaxToRenounce = param.maxTaxToRenounce;
  
          _bankPadTaxApplyPeriod = param.bankPadTaxApplyPeriod;
          _taxWhitelistApplyDelay = param.taxWhitelistApplyDelay;
          _tradingDelayTime = param.tradingDelayTime;
          _tradingDisableTime = param.tradingDisableTime;
      }
  
      /// @dev Check if the sell amount is not against the anti-dump feature
      function _isValidSell(uint256 sellAmount) internal view {
          uint256 totalSupply_ = totalSupply();
          uint16 antiDumpLimit_ = _antiDumpLimit;
          // when anti-dump feature is enabled, sell amount should be less than the anti-dump limit
          require(
              antiDumpLimit_ < MIN_ANTI_DUMP_LIMIT ||
                  (totalSupply_ * antiDumpLimit_) / DENOMINATOR >= sellAmount,
              "anti-dump"
          );
      }
  
      /**
       * @notice function {launch}
       *
       * Finalize the initialization of the token contract and launch!
       *
       * @param tradingDelayed Once this flag is set, trading is delayed for 1 min
       * @param tradingDisabled Once this flag is set, trading is disabled until it is set or 4 days
       */
      function launch(
          bool tradingDelayed,
          bool tradingDisabled
      ) external onlyFactory {
          require(!_isLaunched, "already launched");
          _isLaunched = true;
          // trading delay flag and trading disable flag can not set at the same time
          require(
              !tradingDelayed || !tradingDisabled,
              "can not delayed and disabled"
          );
  
          _isTradingDelayed = tradingDelayed;
          _isTradingDisabled = tradingDisabled;
          _launchedAt = block.timestamp;
      }
  
      /**
       * @notice function {batchSetAsAmmPair}
       *
       * Set / unset multiple pair addresses as AMM pair
       * LP addresses should be excluded from hold limit
       *
       * @param pairs lp addresses
       * @param flag true / false
       */
      function batchSetAsAmmPair(
          address[] calldata pairs,
          bool flag
      ) external onlyOwner {
          uint256 len = pairs.length;
  
          for (uint256 i; i < len; ) {
              address pair = pairs[i];
              require(pair != _baseAmmPair, "can not access base amm pair");
              _isAmmPair[pair] = flag;
              _isExcludedFromHoldLimit[pair] = flag;
  
              unchecked {
                  ++i;
              }
  
              emit NewAmmPair(pair, flag);
          }
      }
  
      /// @notice Renounce ownership of the token contract
      /// @dev Only available when buy/sell tax is less than 5%
      function renounceOwnership() public override onlyOwner {
          uint16 maxTaxToRenounce_ = _maxTaxToRenounce;
          require(
              _buyTax <= maxTaxToRenounce_ &&
                  _sellTax <= maxTaxToRenounce_ &&
                  _treasuryTax <= maxTaxToRenounce_,
              "lower taxes before renounce"
          );
  
          super.renounceOwnership();
      }
  
      /// @notice Enable conversion of token tax
      function enableTaxConvert(bool flag) external onlyOwner {
          _isTaxConvertEnabled = flag;
      }
  
      function isTaxConvertEnabled() external view returns (bool) {
          return _isTaxConvertEnabled;
      }
  
      /// @notice Update the threshold amount for the swapping to occur
      /// @dev Too small value will cause sell tx happens in every tx
      function updateThresholdAmount(uint256 amount) external onlyOwner {
          require(amount > 0, "invalid threshold");
          _thresholdAmount = amount;
      }
  
      function thresholdAmount() external view returns (uint256) {
          return _thresholdAmount;
      }
  
      function launchedAt() external view returns (uint256) {
          return _launchedAt;
      }
  
      /**
       * @dev function {maxTaxToRenounce}
       *
       * Return the tax condition for renouncing ownership of the token
       *
       * @return uint16 max tax values for renounce
       */
      function maxTaxToRenounce() external view returns (uint16) {
          return _maxTaxToRenounce;
      }
  
      /**
       * @dev function {tradingTimes}
       *
       * Return token related time configuration
       *
       * @return uint32 trading delay time
       * @return uint32 trading disable time
       * @return uint32 BankPad tax apply period
       * @return uint32 Tax whitelist delay period
       */
      function timeConfiguration()
          external
          view
          returns (uint32, uint32, uint32, uint32)
      {
          return (
              _tradingDelayTime,
              _tradingDisableTime,
              _bankPadTaxApplyPeriod,
              _taxWhitelistApplyDelay
          );
      }
  }
  
  
  // File contracts/token/ERC20ByBankPad.sol
  
  pragma solidity ^0.8.0;
  
  // Original license: SPDX_License_Identifier: MIT
  
  contract ERC20ByBankPad is ERC20ByBankPadBase {
      bytes32 public constant bankUUIDHash =
          0x4D45544144524F504D45544144524F504D45544144524F504D45544144524F50;
  
      using Address for address payable;
      using SafeERC20 for IERC20;
  
      bool private _inSwap;
  
      modifier lockTheSwap() {
          _inSwap = true;
          _;
          _inSwap = false;
      }
  
      constructor(
          address factory_,
          address deployer_,
          TokenLaunchConf memory tokenLaunchConf_,
          InheritedConf memory inheritedConf_
      )
          ERC20ByBankPadBase(
              factory_,
              deployer_,
              tokenLaunchConf_,
              inheritedConf_
          )
      {
          _isExcludedFromTxLimit[address(0)] = true;
          _isExcludedFromTxLimit[address(0xdead)] = true;
          _isExcludedFromTxLimit[address(this)] = true;
          _isExcludedFromTxLimit[deployer_] = true;
  
          _isExcludedFromHoldLimit[address(0)] = true;
          _isExcludedFromHoldLimit[address(0xdead)] = true;
          _isExcludedFromHoldLimit[address(this)] = true;
          _isExcludedFromHoldLimit[deployer_] = true;
  
          _isExcludedFromTax[address(0)] = true;
          _isExcludedFromTax[address(0xdead)] = true;
          _isExcludedFromTax[address(this)] = true;
          _isExcludedFromTax[deployer_] = true;
      }
  
      /**
       * @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 override {
          if (!_isLaunched) {
              super._afterTokenTransfer(from, to, amount);
              return;
          }
  
          _checkTradingDelayedOrDisabled(from, to);
  
          // check blacklist
          // tokens can not be transferred to the blacklisted account
          // blacklisted account can transfer tokens to the owner, or burn them
          require(
              (to == address(0) || to == owner()) ||
                  (!_blacklist[from] && !_blacklist[to]),
              "blacklisted"
          );
  
          uint256 totalSupply_ = totalSupply();
  
          // check max tx limit
          require(
              _isExcludedFromTxLimit[from] ||
                  _isExcludedFromTxLimit[to] ||
                  amount <= (totalSupply_ * _maxTxLimit) / DENOMINATOR,
              "tx amount limited"
          );
  
          // check max wallet amount limit
          require(
              _isExcludedFromHoldLimit[to] ||
                  balanceOf(to) <= (totalSupply_ * _maxHoldLimit) / DENOMINATOR,
              "receiver hold limited"
          );
      }
  
      function _transfer(
          address from,
          address to,
          uint256 amount
      ) internal override {
          // token transfer before token launches like mint / add liquidity will not charge taxes
          if (!_isLaunched) {
              super._transfer(from, to, amount);
              return;
          }
  
          uint256 blockTime = block.timestamp;
  
          uint256 bankPadTaxApplyPeriod = _bankPadTaxApplyPeriod;
  
          // is the token balance of this contract address over the min number of
          // tokens that we need to initiate a swap + liquidity lock?
          // also, don't get caught in a circular liquidity event.
          // also, don't swap & liquify if sender is uniswap pair.
          uint256 contractTokenBalance = balanceOf(address(this));
  
          // tax whitelist is only applied after 2 days of the first buy
          // but, token transfer from the token contract itself should be whitelisted
          bool isWhitelisted = from == address(this) ||
              ((_isExcludedFromTax[from] || _isExcludedFromTax[to]) &&
                  _firstBuyAt > 0 &&
                  blockTime >= _firstBuyAt + _taxWhitelistApplyDelay);
          bool isBuyTx = _isAmmPair[from];
          bool isSellTx = _isAmmPair[to];
  
          bool isBankpadOverTime = _bankpadFeeApplied &&
              _firstBuyAt > 0 &&
              blockTime > _firstBuyAt + bankPadTaxApplyPeriod;
  
          // swap accumlated tax into ETH or USDC
          if (
              !_inSwap &&
              !isWhitelisted &&
              !isBuyTx &&
              _isTaxConvertEnabled &&
              (isBankpadOverTime || contractTokenBalance >= _thresholdAmount)
          ) {
              // although the bankpad tax period is finished, there may still be accumulated taxes thus far.
              // in this case, we will swap all those taxes into ETH / USDC.
              // when the bankpad fee period is over, swap all accumlated taxes
              if (isBankpadOverTime) _swapToPairedToken(contractTokenBalance);
              else _swapToPairedToken(_thresholdAmount);
              if (isBankpadOverTime) _bankpadFeeApplied = false;
          }
  
          if (amount == 0) {
              super._transfer(from, to, 0);
              return;
          }
  
          uint256 fees;
          if (!isWhitelisted) {
              if (isBuyTx) {
                  // bankpad tax is applied on top of buy tax for 15 days
                  // its 10% of buy tax
                  if (
                      _bankpadFeeApplied &&
                      (_firstBuyAt == 0 ||
                          blockTime <= _firstBuyAt + bankPadTaxApplyPeriod)
                  )
                      fees =
                          (amount *
                              (_buyTax + _treasuryTax) *
                              (DENOMINATOR + _bankPadTax)) /
                          DENOMINATOR /
                          DENOMINATOR;
                  else fees = (amount * (_buyTax + _treasuryTax)) / DENOMINATOR;
  
                  // for the first buy txs, anti sniper auto-burn is applied
                  // this is applied for 3 blocks
                  uint256 autoBurnPerc = _antiSniperAutoBurn();
  
                  if (autoBurnPerc > 0) {
                      uint256 autoBurnAmount = (amount * autoBurnPerc) /
                          DENOMINATOR;
                      _burn(from, autoBurnAmount);
  
                      amount -= autoBurnAmount;
                  }
              } else if (isSellTx) {
                  _isValidSell(amount);
                  // bankpad tax is applied on top of sell tax for 15 days
                  // its 10% of buy tax
                  if (
                      _bankpadFeeApplied &&
                      (_firstBuyAt == 0 ||
                          blockTime <= _firstBuyAt + bankPadTaxApplyPeriod)
                  )
                      fees =
                          (amount *
                              (_sellTax + _treasuryTax) *
                              (DENOMINATOR + _bankPadTax)) /
                          DENOMINATOR /
                          DENOMINATOR;
                  else fees = (amount * (_sellTax + _treasuryTax)) / DENOMINATOR;
              }
  
              if (fees > 0) super._transfer(from, address(this), fees);
              amount -= fees;
          }
  
          super._transfer(from, to, amount);
      }
  
      function _checkTradingDelayedOrDisabled(address from, address to) private {
          address teamAccount_ = teamAccount; // gas-saving code
          address tokenOwner = owner(); // gas-saving code
          // token owner or team account is not restricted by trading delay or trading manually enable trading feature
          if (
              teamAccount_ == from ||
              teamAccount_ == to ||
              tokenOwner == from ||
              tokenOwner == to
          ) return;
  
          uint256 blockTime = block.timestamp;
          // check if the trading delayed
          if (_isTradingDelayed) {
              if (blockTime < _launchedAt + _tradingDelayTime)
                  revert("trading delayed");
              _isTradingDelayed = false;
              emit TradingDelayFinished();
          }
  
          // check if the trading disabled
          if (_isTradingDisabled) {
              if (blockTime < _launchedAt + _tradingDisableTime)
                  revert("trading disabled");
              // enable trading after 4 days
              _isTradingDisabled = false;
              emit TradingEnabled();
          }
      }
  
      /**
       * @dev Swap token accumlated in this contract to the base paired token
       * 
       * According to the paired token
  
       * - when paired token is ETH, swapToETH function is called
       * - when paired token is another token, swapToToken is called
  
       */
      function _swapToPairedToken(uint256 amount) private lockTheSwap {
          if (amount == 0) return;
          address basePairedToken_ = _basePairedToken;
          address payable servicePayAccount = IERC20FactoryByBankPad(
              bankPadFactory
          ).servicePayAccount();
          address payable taxPayAccount = payable(_taxPayAccount);
          address payable treasuryAccount = payable(_treasuryAccount);
          if (basePairedToken_ == ETH_ADDRESS) {
              uint256 swappedAmount = _swapToETH(amount);
              if (swappedAmount > 0) {
                  // send bankpad fee
                  if (_bankpadFeeApplied) {
                      uint256 bankpadFeeAmount = _calcBankpadFee(swappedAmount);
                      servicePayAccount.sendValue(bankpadFeeAmount);
                      swappedAmount -= bankpadFeeAmount;
                  }
                  // send treasury tax
                  if (_treasuryTax > 0 && treasuryAccount != address(0)) {
                      uint256 treasuryFeeAmount = _calcTreasuryFee(swappedAmount);
                      treasuryAccount.sendValue(treasuryFeeAmount);
                      swappedAmount -= treasuryFeeAmount;
                  }
                  // send buy/sell tax
                  if (taxPayAccount != address(0))
                      taxPayAccount.sendValue(swappedAmount);
              }
          } else {
              uint256 swappedAmount = _swapToToken(basePairedToken_, amount);
              if (swappedAmount > 0) {
                  // send bankpad fee
                  if (_bankpadFeeApplied) {
                      uint256 bankpadFeeAmount = _calcBankpadFee(swappedAmount);
                      IERC20(basePairedToken_).safeTransfer(
                          servicePayAccount,
                          bankpadFeeAmount
                      );
                      swappedAmount -= bankpadFeeAmount;
                  }
                  // send treasury tax
                  if (_treasuryTax > 0 && treasuryAccount != address(0)) {
                      uint256 treasuryFeeAmount = _calcTreasuryFee(swappedAmount);
                      IERC20(basePairedToken_).safeTransfer(
                          treasuryAccount,
                          treasuryFeeAmount
                      );
                      swappedAmount -= treasuryFeeAmount;
                  }
  
                  // send buy/sell tax
                  if (taxPayAccount != address(0))
                      IERC20(basePairedToken_).safeTransfer(
                          taxPayAccount,
                          swappedAmount
                      );
              }
          }
      }
  
      /// @dev Calculate bankpad fee amount from the swapped total tax amount
      function _calcBankpadFee(
          uint256 swappedAmount
      ) private view returns (uint256) {
          uint16 bankPadTax = _bankPadTax;
          return (swappedAmount * bankPadTax) / (DENOMINATOR + bankPadTax);
      }
  
      /// @dev Calculate treasury fee amount from the swapped tax amount
      function _calcTreasuryFee(
          uint256 swappedAmount
      ) private view returns (uint256) {
          // gas-saving codes
          uint16 buyTax_ = _buyTax;
          uint16 sellTax_ = _sellTax;
          uint16 treasuryTax_ = _treasuryTax;
  
          return
              (swappedAmount * 2 * treasuryTax_) /
              (buyTax_ + sellTax_ + 2 * treasuryTax_);
      }
  
      function _swapToToken(
          address token,
          uint256 amount
      ) private returns (uint256) {
          // generate the uniswap pair path of token -> stable coin
          address[] memory path = new address[](2);
          path[0] = address(this);
          path[1] = token;
  
          IDexRouter dexRouter_ = IDexRouter(_dexRouter);
          _approve(address(this), address(dexRouter_), amount);
          uint256 balanceBefore = IERC20(token).balanceOf(address(this));
          // make the swap
          try
              dexRouter_.swapExactTokensForTokensSupportingFeeOnTransferTokens(
                  amount,
                  0, // accept any amount of tokens
                  path,
                  address(this),
                  block.timestamp + 300
              )
          {
              return IERC20(token).balanceOf(address(this)) - balanceBefore;
          } catch (bytes memory /* lowLevelData */) {}
          return 0;
      }
  
      function _swapToETH(uint256 amount) private returns (uint256) {
          IDexRouter dexRouter_ = IDexRouter(_dexRouter);
          // generate the uniswap pair path of token -> eth
          address[] memory path = new address[](2);
          path[0] = address(this);
          path[1] = dexRouter_.WETH();
  
          _approve(address(this), address(dexRouter_), amount);
          uint256 balanceBefore = address(this).balance;
          // make the swap
          try
              dexRouter_.swapExactTokensForETHSupportingFeeOnTransferTokens(
                  amount,
                  0, // accept any amount of ETH
                  path,
                  address(this),
                  block.timestamp + 300
              )
          {
              return address(this).balance - balanceBefore;
          } catch (bytes memory /* lowLevelData */) {}
          return 0;
      }
  
      receive() external payable {}
  
      /**
       * @dev It allows the admin to recover tokens sent to the contract
       * @param token_: the address of the token to withdraw
       * @param amount_: the number of tokens to withdraw
       *
       * This function is only callable by owner
       */
      function recoverToken(address token_, uint256 amount_) external onlyOwner {
          IERC20(token_).safeTransfer(_msgSender(), amount_);
      }
  
      /**
       * @dev It allows the admin to recover ETH sent to the contract
       * @param amount_: the number of ETH to withdraw
       *
       * This function is only callable by owner
       */
      function recoverETH(uint256 amount_) external onlyOwner {
          payable(_msgSender()).sendValue(amount_);
      }
  }
  
  
  // File contracts/launchpad/ERC20MachineByBankPad.sol
  
  pragma solidity ^0.8.0;
  
  // Original license: SPDX_License_Identifier: MIT
  
  
  /**
   * @dev BankPad ERC-20 contract deployer
   *
   *
   * Lightweight deployment module for use with template contracts
   */
  contract ERC20MachineByBankPad is Context {
      address public immutable factory;
      uint256 public immutable bytesStartPosition;
  
      /**
       * @dev {constructor}
       *
       * @param factory_ Address of the factory
       */
      constructor(address factory_) {
          factory = factory_;
  
          (
              bool validStartPosition,
              uint256 startPosition
          ) = getBytesStartPosition();
  
          if (!validStartPosition) {
              revert("deployment error");
          }
          bytesStartPosition = startPosition;
      }
  
      /**
       * @dev {onlyFactory}
       *
       * Throws if called by any account other than the factory.
       */
      modifier onlyFactory() {
          if (factory != _msgSender()) {
              revert("caller is not factory");
          }
          _;
      }
  
      /**
       * @dev function {deploy} Deploy a fresh instance
       *
       * @param bankIdHash The hash of this token deployment identifier
       * @param salt Provided sale for create2
       * @param args Constructor arguments
       */
      function deploy(
          bytes32 bankIdHash,
          bytes32 salt,
          bytes memory args
      ) external payable onlyFactory returns (address erc20ContractAddress) {
          // First check the bankIdHash_ is valid:
          if (_startsWithEmptyByte(bankIdHash)) revert("invalid hash");
  
          // 1) Get the deployment bytecode:
          bytes memory deploymentBytecode = type(ERC20ByBankPad).creationCode;
  
          uint256 startPositionInMemoryForAssembly = bytesStartPosition;
  
          // 2) Modify the bytecode, replacing the default bankIdHash with the received value.
          // This allows us to verify the contract code (with comments) for every token,
          // rather than matching the deployed code (and comments) of previous tokens.
          assembly {
              // Define the start position
              let start := add(
                  deploymentBytecode,
                  startPositionInMemoryForAssembly
              )
  
              // Copy the bytes32 value to the specified position
              mstore(add(start, 0x20), bankIdHash)
          }
          // 3) Add the args to the bytecode:
          bytes memory deploymentData = abi.encodePacked(
              deploymentBytecode,
              args
          );
  
          // 4) Deploy it:
          assembly {
              erc20ContractAddress := create2(
                  0,
                  add(deploymentData, 0x20),
                  mload(deploymentData),
                  salt
              )
              if iszero(extcodesize(erc20ContractAddress)) {
                  revert(0, 0)
              }
          }
      }
  
      /**
       * @dev function {_startsWithEmptyByte} Does the passed hash start with
       * an empty byte?
       *
       * @param hash_ The bytes32 hash
       * @return bool The hash does / doesn't start with an empty tybe
       */
      function _startsWithEmptyByte(bytes32 hash_) internal pure returns (bool) {
          return bytes1(hash_) == 0x00;
      }
  
      /**
       * @dev function {getBytesStartPosition} Get the replacement bytes start position
       *
       * @return found_ If the bytes have been found
       * @return startPosition_ The start position of the bytes
       */
      function getBytesStartPosition()
          public
          pure
          returns (bool found_, uint256 startPosition_)
      {
          bytes
              memory bytesTarget = hex"4D45544144524F504D45544144524F504D45544144524F504D45544144524F50";
          bytes memory deploymentCode = type(ERC20ByBankPad).creationCode;
  
          // Iterate through the bytecode to find the search bytes.
          // Start at a reasonable position: byte 5000
          for (
              uint256 i = 5000;
              i < deploymentCode.length - bytesTarget.length + 1;
              i += 1
          ) {
              bool found = true;
  
              // Check if the current chunk matches the search string
              for (uint256 j = 0; j < bytesTarget.length; j++) {
                  if (deploymentCode[i + j] != bytesTarget[j]) {
                      found = false;
                      break;
                  }
              }
  
              if (found) {
                  return (true, i);
              }
          }
  
          return (false, 0);
      }
  }