// 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/security/Pausable.sol@v4.9.3

// Original license: SPDX_License_Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol)

pragma solidity ^0.8.0;

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    constructor() {
        _paused = false;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        _requireNotPaused();
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        _requirePaused();
        _;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view virtual returns (bool) {
        return _paused;
    }

    /**
     * @dev Throws if the contract is paused.
     */
    function _requireNotPaused() internal view virtual {
        require(!paused(), "Pausable: paused");
    }

    /**
     * @dev Throws if the contract is not paused.
     */
    function _requirePaused() internal view virtual {
        require(paused(), "Pausable: not paused");
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}


// 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/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/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. antiSniperOn
    ///
    /// - 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;
        string telegram;
        bytes distribParam;
        bytes antiBotParam;
        bytes taxParam;
        bytes lpParam;
    }
}


// File contracts/interfaces/IERC20ByBankPad.sol

// Original license: SPDX_License_Identifier: MIT

pragma solidity ^0.8.4;

interface IERC20ByBankPad {
    /// @notice Launch the token contract
    /// @dev Token is launched from this moment, and users can start trading
    /// @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;

    /// @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);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) external;

    /**
     * @dev BankPad UUID Hash
     */
    function bankUUIDHash() external view returns (bytes32);
}


// File contracts/interfaces/IERC20MachineByBankPad.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
 */
interface IERC20MachineByBankPad {
    /**
     * @notice function {deploy}
     *
     * Deploy a fresh instance
     */
    function deploy(
        bytes32 bankIdHash_,
        bytes32 salt_,
        bytes memory args_
    ) external payable returns (address erc20ContractAddress_);
}


// 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/interfaces/IUniLocker.sol

// Original license: SPDX_License_Identifier: MIT

pragma solidity ^0.8.4;

interface IERCBurn {
    function burn(uint256 _amount) external;

    function approve(address spender, uint256 amount) external returns (bool);

    function allowance(
        address owner,
        address spender
    ) external returns (uint256);

    function balanceOf(address account) external view returns (uint256);
}

interface IUniLocker {
    struct FeeStruct {
        uint256 ethFee; // Small eth fee to prevent spam on the platform
        IERCBurn secondaryFeeToken; // UNCX or UNCL
        uint256 secondaryTokenFee; // optional, UNCX or UNCL
        uint256 secondaryTokenDiscount; // discount on liquidity fee for burning secondaryToken
        uint256 liquidityFee; // fee on univ2 liquidity tokens
        uint256 referralPercent; // fee for referrals
        IERCBurn referralToken; // token the refferer must hold to qualify as a referrer
        uint256 referralHold; // balance the referrer must hold to qualify as a referrer
        uint256 referralDiscount; // discount on flatrate fees for using a valid referral address
    }

    function gFees() external view returns (FeeStruct memory);

    function lockLPToken(
        address _lpToken,
        uint256 _amount,
        uint256 _unlock_date,
        address payable _referral,
        bool _fee_in_eth,
        address payable _withdrawer
    ) external payable;
}


// File contracts/launchpad/ERC20FactoryByBankPadBase.sol

pragma solidity ^0.8.0;

// Original license: SPDX_License_Identifier: MIT


contract ERC20FactoryByBankPadBase is Ownable {
    using Address for address payable;

    uint16 internal constant DENOMINATOR = 10000;

    /// @dev Service fee and token tax fee receive account
    address payable internal _servicePayAccount;

    /// @dev Max team distribution rate default 10%
    uint16 private _maxTeamAlloc = 1000;

    /// @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 private _autoBurnFirstPercent = 2000;
    uint16 private _autoBurnSecondPercent = 1333;
    uint16 private _autoBurnThirdPercent = 666;

    /// @dev Minimum value that can be set for the max transaction limit - 0.5%
    uint16 private _minMaxTxLimit = 50;
    /// @dev Maximum value that can be set for the max transaction limit - 100%
    uint16 private _maxMaxTxLimit = 10000;
    /// @dev Minimum value that can be set for the max hold limit - 0.5%
    uint16 private _minMaxHoldLimit = 50;
    /// @dev Maximum value that can be set for the max hold limit - 100%
    uint16 private _maxMaxHoldLimit = 10000;

    /// @dev Max buy tax
    uint16 private _maxBuyTax = 3500;
    /// @dev Max sell tax
    uint16 private _maxSellTax = 3500;
    /// @dev Max treasury tax
    uint16 private _maxTreasuryTax = 500;
    /// @dev Bankpad tax is set on top buy / sell / treasury tax as a service fee
    uint16 private _bankPadTax = 1000;

    /// @dev Ownership can be renounced only when buy/sell/treasury tax is below limit default 5%
    uint16 private _maxTaxForRenounce = 500;
    /// @dev Ownership can be renounced only when {maxTxLimit} is over limit default 100%
    uint16 private _minMaxTxLimitForRenounce = 10000;
    /// @dev Ownership can be renounced only when {maxHoldLimit} is over limit default 100%
    uint16 private _minMaxHoldLimitForRenounce = 10000;

    /// @dev Bankpad tax is removed after some days default 15 days
    uint256 private _bankPadTaxApplyPeriod = 15 days;
    /// @dev Tax whitelist (exclude list) is not applied within some days after token launches default 2 days
    uint256 private _taxWhitelistApplyDelay = 2 days;

    /// @dev BankPad machine contract
    address internal _machine;

    /// @dev Minimum lock period default 30 days
    uint256 internal _minLockPeriod = 30 days;

    /// @dev Token launch fee in ETH
    uint256 internal _launchFee;
    /// @dev Delayed trading fee in ETH
    uint256 internal _tradingDelayFee;
    /// @dev Delayed disable fee in ETH
    uint256 internal _tradingDisableFee;

    /// @dev Token transfer is disabled for 1 mins once trading_delay flag is set
    uint256 private _tradingDelayTime = 1 minutes;
    /// @dev Trading is disabled once {_isTradingDisabled} flag is set,
    /// it is unset automatically after 4 days if owner does not enable trading
    uint256 private _tradingDisableTime = 4 days;

    /// @dev LP locker contract for dex router
    mapping(address => address) internal _lpLockers;
    /// @dev Get token address per given BankPad UUID
    mapping(string => address) internal _tokens;
    /// @dev Whitelisted token deployers
    mapping(address => bool) internal _whitelist;
    /// @dev Minimum pair token amount to be added to the liquidity
    mapping(address => uint256) internal _minPairTokenAmounts;

    event AntiBotLimitsUpdated(
        uint16 minMaxTxLimit,
        uint16 maxMaxTxLimit,
        uint16 minMaxHoldLimit,
        uint16 maxMaxHoldLimit
    );
    event BankPadTaxUpdated(uint16 bankPadTax);
    event ConditionForRenounceUpdated(
        uint16 maxTax,
        uint16 minMaxHoldLimit,
        uint16 minMaxTxLimit
    );
    event DeployerWhitelisted(address account, bool flag);
    event MaxTeamAllocUpdated(uint16 teamAlloc);
    event MinLockPeriodUpdated(uint256 period);
    event MinPairTokenAmountUpdated(address pairToken, uint256 amount);
    event ServiceFeesUpdated(
        uint256 launchFee,
        uint256 tradingDelayFee,
        uint256 tradingDisableFee
    );
    event ServicePayAccountUpdated(address payable account);
    event SnipeAutoBurnPercentsUpdated(
        uint16 firstPercent,
        uint16 secondPercent,
        uint16 thirdPercent
    );
    event TaxApplyTimesUpdated(
        uint256 bankPadTaxApplyPeriod,
        uint256 taxWhitelistApplyDelay
    );
    event TaxLimitsUpdated(
        uint16 maxBuyTax,
        uint16 maxSellTax,
        uint16 maxTreasuryTax
    );
    event TradingTimesUpdated(
        uint256 tradingDelayTime,
        uint256 tradingDisableTime
    );

    /// @notice Update BankPad service fees
    /// @param launchFee token launch fee
    /// @param tradingDelayFee trading delay service fee
    /// @param tradingDisableFee trading disable service fee
    function updateServiceFees(
        uint256 launchFee,
        uint256 tradingDelayFee,
        uint256 tradingDisableFee
    ) external onlyOwner {
        _launchFee = launchFee;
        _tradingDelayFee = tradingDelayFee;
        _tradingDisableFee = tradingDisableFee;

        emit ServiceFeesUpdated(launchFee, tradingDelayFee, tradingDisableFee);
    }

    /// @notice View BankPad service fees
    /// @return uint256 token launch fee
    /// @return uint256 trading delay service fee
    /// @return uint256 trading disable service fee
    function serviceFees() external view returns (uint256, uint256, uint256) {
        return (_launchFee, _tradingDelayFee, _tradingDisableFee);
    }

    /// @notice Update LP locker contract
    function updateLPLocker(
        address dexRouter,
        address newLocker
    ) external onlyOwner {
        _lpLockers[dexRouter] = newLocker;
    }

    function lpLocker(address dexRouter) external view returns (address) {
        return _lpLockers[dexRouter];
    }

    /**
     * @dev function {whitelistDeployer}
     *
     * Whitelist deployer
     *
     * @param deployer account to be whitelisted
     * @param flag true or false
     */
    function whitelistDeployer(address deployer, bool flag) external onlyOwner {
        _whitelist[deployer] = flag;

        emit DeployerWhitelisted(deployer, flag);
    }

    function isWhitelistedDeployer(
        address deployer
    ) external view returns (bool) {
        return _whitelist[deployer];
    }

    /**
     * @notice function {updateBankMachine}
     *
     * Update BankPad token machine address
     */
    function updateBankMachine(address machine) external onlyOwner {
        require(machine != address(0), "invalid machine");

        _machine = machine;
    }

    function bankMachine() external view returns (address) {
        return _machine;
    }

    /// @notice Update service fee receive account
    function updateServicePayAccount(
        address payable account
    ) external onlyOwner {
        require(account != address(0), "invalid pay account");
        // confirm service pay account can receive ETH
        account.sendValue(0);

        _servicePayAccount = account;

        emit ServicePayAccountUpdated(account);
    }

    function servicePayAccount() external view returns (address payable) {
        return _servicePayAccount;
    }

    function getToken(string memory uuid) external view returns (address) {
        return _tokens[uuid];
    }

    /**
     * @dev function {updateMaxTeamAlloc}
     *
     * Update the limit of the team distribution percent
     *
     * @param teamAlloc new max limit of the team distribution percent
     */
    function updateMaxTeamAlloc(uint16 teamAlloc) external onlyOwner {
        require(teamAlloc <= DENOMINATOR, "out of range");
        _maxTeamAlloc = teamAlloc;
        emit MaxTeamAllocUpdated(teamAlloc);
    }

    /**
     * @dev function {maxTeamAlloc}
     *
     * Return max team distribution percentage
     * No limit for the whitelisted deployers at the time of the token creation
     * Whitelist is not applied after token is deployed
     *
     * @param isLaunched token is launched or in being launched
     * @param deployer token deployer
     */
    function maxTeamAlloc(
        bool isLaunched,
        address deployer
    ) external view returns (uint16) {
        if (!isLaunched && _whitelist[deployer]) return DENOMINATOR;
        return _maxTeamAlloc;
    }

    /**
     * @dev function {updateMinLockPeriod}
     *
     * Update minimum lock period
     *
     * @param period new minimum lock period
     */
    function updateMinLockPeriod(uint256 period) external onlyOwner {
        _minLockPeriod = period;

        emit MinLockPeriodUpdated(period);
    }

    function minLockPeriod() external view returns (uint256) {
        return _minLockPeriod;
    }

    /**
     * @dev function {updateTradingTimes}
     *
     * Update trading delay time and trading disable time
     *
     * @param tradingDelayTime new trading delay time
     * @param tradingDisableTime new trading disable time
     */
    function updateTradingTimes(
        uint256 tradingDelayTime,
        uint256 tradingDisableTime
    ) external onlyOwner {
        _tradingDelayTime = tradingDelayTime;
        _tradingDisableTime = tradingDisableTime;

        emit TradingTimesUpdated(tradingDelayTime, tradingDisableTime);
    }

    /**
     * @dev function {tradingTimes}
     *
     * Return trading delay time and trading disable time
     * Only used when delay flag and trading disable flag is set
     *
     * @return uint256 trading delay time
     * @return uint256 trading disable time
     */
    function tradingTimes() external view returns (uint256, uint256) {
        return (_tradingDelayTime, _tradingDisableTime);
    }

    /**
     * @dev function {updateSnipeAutoBurnPercents}
     *
     * Update percent values of anti-snipe auto burning
     *
     * @param firstPercent anti-snipe first auto burn percent
     * @param secondPercent anti-snipe second auto burn percent
     * @param thirdPercent anti-snipe third auto burn percent
     */
    function updateSnipeAutoBurnPercents(
        uint16 firstPercent,
        uint16 secondPercent,
        uint16 thirdPercent
    ) external onlyOwner {
        require(
            firstPercent <= DENOMINATOR &&
                secondPercent <= DENOMINATOR &&
                thirdPercent <= DENOMINATOR,
            "out of range"
        );
        _autoBurnFirstPercent = firstPercent;
        _autoBurnSecondPercent = secondPercent;
        _autoBurnThirdPercent = thirdPercent;

        emit SnipeAutoBurnPercentsUpdated(
            firstPercent,
            secondPercent,
            thirdPercent
        );
    }

    /**
     * @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
        );
    }

    /**
     * @dev function {updateAntiBotLimits}
     *
     * Update minimum and maximum limits of {maxTxLimit} and {maxHoldLimit}
     *
     * @param minMaxTxLimit minimum value of {maxTxLimit}
     * @param maxMaxTxLimit maximum value of {maxTxLimit}
     * @param minMaxHoldLimit minimum value of {maxHoldLimit}
     * @param maxMaxHoldLimit maximum value of {maxHoldLimit}
     */
    function updateAntiBotLimits(
        uint16 minMaxHoldLimit,
        uint16 maxMaxHoldLimit,
        uint16 minMaxTxLimit,
        uint16 maxMaxTxLimit
    ) external onlyOwner {
        require(
            minMaxTxLimit <= maxMaxTxLimit &&
                minMaxHoldLimit <= maxMaxHoldLimit,
            "invalid order"
        );
        require(
            maxMaxTxLimit <= DENOMINATOR && maxMaxHoldLimit <= DENOMINATOR,
            "out of range"
        );
        _minMaxTxLimit = minMaxTxLimit;
        _maxMaxTxLimit = maxMaxTxLimit;
        _minMaxHoldLimit = minMaxHoldLimit;
        _maxMaxHoldLimit = maxMaxHoldLimit;

        emit AntiBotLimitsUpdated(
            minMaxHoldLimit,
            maxMaxHoldLimit,
            minMaxTxLimit,
            maxMaxTxLimit
        );
    }

    /**
     * @dev function {antiBotLimits}
     *
     * Return anti bot limit configuration values
     *
     * @param isLaunched token is launched or in being launched
     * @param deployer token deployer
     *
     * @return uint16 minimum value can be set for the {maxHoldLimit}
     * @return uint16 maximum value can be set for the {maxHoldLimit}
     * @return uint16 minimum value can be set for the {maxTxLimit}
     * @return uint16 maximum value can be set for the {maxTxLimit}
     */
    function antiBotLimits(
        bool isLaunched,
        address deployer
    ) external view returns (uint16, uint16, uint16, uint16) {
        if (!isLaunched && _whitelist[deployer])
            return (0, DENOMINATOR, 0, DENOMINATOR);
        return (
            _minMaxHoldLimit,
            _maxMaxHoldLimit,
            _minMaxTxLimit,
            _maxMaxTxLimit
        );
    }

    /**
     * @dev function {updateTaxLimits}
     *
     * Update max limit of buy/sell/treasury tax values
     *
     * @param maxBuyTax maximum value of {buyTax}
     * @param maxSellTax maximum value of {sellTax}
     * @param maxTreasuryTax maximum value of {treasuryTax}
     */
    function updateTaxLimits(
        uint16 maxBuyTax,
        uint16 maxSellTax,
        uint16 maxTreasuryTax
    ) external onlyOwner {
        require(
            maxBuyTax <= DENOMINATOR &&
                maxSellTax <= DENOMINATOR &&
                maxTreasuryTax <= DENOMINATOR,
            "out of range"
        );
        _maxBuyTax = maxBuyTax;
        _maxSellTax = maxSellTax;
        _maxTreasuryTax = maxTreasuryTax;

        emit TaxLimitsUpdated(maxBuyTax, maxSellTax, maxTreasuryTax);
    }

    /**
     * @dev function {taxLimits}
     *
     * Return tax limit values
     *
     * @param isLaunched token is launched or in being launched
     * @param deployer token deployer
     *
     * @return uint16 max buy tax limit
     * @return uint16 max sell tax limit
     * @return uint16 max treasury tax limit
     */
    function taxLimits(
        bool isLaunched,
        address deployer
    ) external view returns (uint16, uint16, uint16) {
        if (!isLaunched && _whitelist[deployer])
            return (DENOMINATOR, DENOMINATOR, DENOMINATOR);
        return (_maxBuyTax, _maxSellTax, _maxTreasuryTax);
    }

    /**
     * @dev function {updateBankPadTax}
     *
     * Update BankPad tax value
     *
     * @param tax new BankPad tax
     */
    function updateBankPadTax(uint16 tax) external onlyOwner {
        _bankPadTax = tax;

        emit BankPadTaxUpdated(tax);
    }

    function bankPadTax() external view returns (uint16) {
        return _bankPadTax;
    }

    /**
     * @dev function {updateConditionForRenounce}
     *
     * Update the condition for renouncing ownership of the token
     *
     * @param maxTax max tax values for renounce
     * @param minMaxTxLimit max tx limit values for renounce
     * @param minMaxHoldLimit max hold limit values for renounce
     */
    function updateConditionForRenounce(
        uint16 maxTax,
        uint16 minMaxHoldLimit,
        uint16 minMaxTxLimit
    ) external onlyOwner {
        _maxTaxForRenounce = maxTax;
        _minMaxTxLimitForRenounce = minMaxTxLimit;
        _minMaxHoldLimitForRenounce = minMaxHoldLimit;

        emit ConditionForRenounceUpdated(
            maxTax,
            minMaxHoldLimit,
            minMaxTxLimit
        );
    }

    /**
     * @dev function {conditionForRenounce}
     *
     * Return the condition for renouncing ownership of the token
     *
     * @return uint16 max tax values for renounce
     * @return uint16 max hold limit values for renounce
     * @return uint16 max tx limit values for renounce
     */
    function conditionForRenounce()
        external
        view
        returns (uint16, uint16, uint16)
    {
        return (
            _maxTaxForRenounce,
            _minMaxHoldLimitForRenounce,
            _minMaxTxLimitForRenounce
        );
    }

    function updateTaxApplyTimes(
        uint256 bankPadTaxApplyPeriod,
        uint256 taxWhitelistApplyDelay
    ) external onlyOwner {
        _bankPadTaxApplyPeriod = bankPadTaxApplyPeriod;
        _taxWhitelistApplyDelay = taxWhitelistApplyDelay;

        emit TaxApplyTimesUpdated(
            bankPadTaxApplyPeriod,
            taxWhitelistApplyDelay
        );
    }

    /**
     * @dev function {taxApplyTimes}
     *
     * Return tax apply related times
     *
     * @return uint256 BankPad tax apply period
     * @return uint256 Tax whitelist delay period
     */
    function taxApplyTimes() external view returns (uint256, uint256) {
        return (_bankPadTaxApplyPeriod, _taxWhitelistApplyDelay);
    }

    function updateMinPairTokenAmount(
        address pairToken,
        uint256 amount
    ) external onlyOwner {
        _minPairTokenAmounts[pairToken] = amount;

        emit MinPairTokenAmountUpdated(pairToken, amount);
    }

    /**
     * @dev function {minPairTokenAmount}
     *
     * Return minimum pair token amount
     *
     * @param pairToken address of adding token being added with deployed token
     */
    function minPairTokenAmount(
        address pairToken
    ) external view returns (uint256) {
        return _minPairTokenAmounts[pairToken];
    }
}


// File contracts/launchpad/ERC20FactoryByBankPad.sol

pragma solidity ^0.8.0;

// Original license: SPDX_License_Identifier: MIT






contract ERC20FactoryByBankPad is ERC20FactoryByBankPadBase, Pausable {
    using SafeERC20 for IERC20;
    using Address for address payable;

    address private constant ETH_ADDRESS =
        0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;

    event NewTokenCreated(
        address token,
        address serviceAccount,
        address deployer,
        bytes32 uuidHash,
        uint256 serviceFee,
        IBase.TokenLaunchConf conf
    );

    constructor(
        address payable servicePayAccount_,
        uint256 launchFee_,
        uint256 delayedTradingFee_,
        uint256 tradingDisableFee_
    ) {
        require(servicePayAccount_ != address(0), "invalid pay account");
        _servicePayAccount = servicePayAccount_;
        _launchFee = launchFee_;
        _tradingDelayFee = delayedTradingFee_;
        _tradingDisableFee = tradingDisableFee_;
    }

    /// @notice Create token from the template
    /// @dev Token configuration parameters are passed as ABI-encoded values.
    function createERC20(
        IBase.TokenLaunchConf memory param
    ) external payable whenNotPaused returns (address) {
        uint256 ethAmount = msg.value;
        require(_tokens[param.uuid] == address(0), "duplicated uuid");

        address deployedAddress = _deployERC20(param);
        _tokens[param.uuid] = deployedAddress;

        IERC20ByBankPad createdToken = IERC20ByBankPad(deployedAddress);
        (
            bool isTradingDelayed,
            bool isTradingDisabled,
            uint256 ethInLP,
            uint256 ethInLockFee
        ) = _initializeLP(createdToken, param);

        uint256 serviceFee = _launchFee +
            (isTradingDelayed ? _tradingDelayFee : 0) +
            (isTradingDisabled ? _tradingDisableFee : 0);
        require(
            ethAmount >= serviceFee + ethInLP + ethInLockFee,
            "insufficient eth"
        );

        // send remained eth to the service pay account
        _servicePayAccount.sendValue(address(this).balance);
        createdToken.launch(isTradingDelayed, isTradingDisabled);

        emit NewTokenCreated(
            deployedAddress,
            _servicePayAccount,
            _msgSender(),
            createdToken.bankUUIDHash(),
            serviceFee,
            param
        );

        return deployedAddress;
    }

    function _deployERC20(
        IBase.TokenLaunchConf memory param
    ) private returns (address) {
        bytes32 salt = keccak256(abi.encodePacked(param.uuid, block.timestamp));
        bytes32 bankIdHash = keccak256(abi.encodePacked(param.uuid));
        bytes memory args = abi.encode(address(this), _msgSender(), param);

        address deployedAddress = IERC20MachineByBankPad(_machine).deploy(
            bankIdHash,
            salt,
            args
        );

        return deployedAddress;
    }

    function _initializeLP(
        IERC20ByBankPad createdToken,
        IBase.TokenLaunchConf memory param
    ) private returns (bool, bool, uint256, uint256) {
        (
            bool isLPBurn,
            bool isTradingDelayed,
            bool isTradingDisabled,
            uint256 pairedTokenAmount,
            uint256 lockPeriod
        ) = abi.decode(param.lpParam, (bool, bool, bool, uint256, uint256));
        require(pairedTokenAmount > 0, "invalid pair token amount");

        // add liquidity
        (uint256 lpAmount, uint256 ethInLP) = _addLP(
            createdToken,
            pairedTokenAmount,
            isLPBurn
        );

        // lock liquidity
        uint256 ethInLockFee;
        if (!isLPBurn)
            ethInLockFee = _lockLP(createdToken, lpAmount, lockPeriod);

        return (isTradingDelayed, isTradingDisabled, ethInLP, ethInLockFee);
    }

    /// @dev Add liquidity to the uniswap router
    /// LP is burnt if the burn flag is set
    /// @return uint256 created LP amount
    /// @return uint256 if pair is eth, return eth amount
    function _addLP(
        IERC20ByBankPad createdToken,
        uint256 pairedTokenAmount,
        bool isLPBurn
    ) private returns (uint256, uint256) {
        (address dexRouter_, address basePairedToken, ) = createdToken
            .ammAddresses();
        IDexRouter dexRouter = IDexRouter(dexRouter_);
        uint256 createdTokenAmount = createdToken.balanceOf(address(this));

        IERC20(address(createdToken)).safeApprove(
            address(dexRouter),
            createdTokenAmount
        );

        require(
            pairedTokenAmount >= _minPairTokenAmounts[basePairedToken],
            "too small pair amount"
        );

        if (basePairedToken == ETH_ADDRESS) {
            (, , uint256 lpAmount) = dexRouter.addLiquidityETH{
                value: pairedTokenAmount
            }(
                address(createdToken),
                createdTokenAmount,
                0,
                0,
                isLPBurn ? address(0xdead) : address(this),
                block.timestamp + 300
            );
            return (lpAmount, pairedTokenAmount);
        } else {
            IERC20(basePairedToken).safeTransferFrom(
                _msgSender(),
                address(this),
                pairedTokenAmount
            );
            IERC20(basePairedToken).safeApprove(
                address(dexRouter),
                pairedTokenAmount
            );
            (, , uint256 lpAmount) = dexRouter.addLiquidity(
                address(createdToken),
                basePairedToken,
                createdTokenAmount,
                pairedTokenAmount,
                0,
                0,
                isLPBurn ? address(0xdead) : address(this),
                block.timestamp + 300
            );
            return (lpAmount, 0);
        }
    }

    /// @dev Lock LP into unicrypt lp locker contract
    /// We pay fee in ETH
    /// @return uint256 fee amount
    function _lockLP(
        IERC20ByBankPad createdToken,
        uint256 lpAmount,
        uint256 lockPeriod
    ) private returns (uint256) {
        require(lockPeriod >= _minLockPeriod, "too short lock");
        (address dexRouter, , address baseAmmPair) = createdToken
            .ammAddresses();
        IUniLocker lockerForDex = IUniLocker(_lpLockers[dexRouter]);
        require(
            address(lockerForDex) != address(0),
            "unsupported dex for lock"
        );
        uint256 ethFee = lockerForDex.gFees().ethFee;

        IERC20(baseAmmPair).safeApprove(address(lockerForDex), lpAmount);
        lockerForDex.lockLPToken{value: ethFee}(
            baseAmmPair,
            lpAmount,
            block.timestamp + lockPeriod,
            payable(address(0)),
            true,
            payable(_msgSender())
        );

        return ethFee;
    }

    /**
     * @notice function {pauseFactory}
     *
     * Pause factory for the maintenance
     */
    function pauseFactory(bool flag) external onlyOwner {
        if (flag) _pause();
        else _unpause();
    }

    /// @notice 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
    /// @dev Only owner can call this function
    function recoverToken(address token_, uint256 amount_) external onlyOwner {
        IERC20(token_).safeTransfer(_msgSender(), amount_);
    }
}