// File: Legend of Tsukim.sol





/*





t.me/LegendofTsukim



*/





// hevm: flattened sources of src/WAP.sol


pragma solidity =0.8.10 >=0.8.10 >=0.8.0 <0.9.0;

pragma experimental ABIEncoderV2;



////// lib/openzeppelin-contracts/contracts/utils/Context.sol

// OpenZeppelin Contracts v4.4.0 (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;

    }

}



////// lib/openzeppelin-contracts/contracts/access/Ownable.sol

// OpenZeppelin Contracts v4.4.0 (access/Ownable.sol)



/* pragma solidity ^0.8.0; */



/* import "../utils/Context.sol"; */



/**

 * @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 Returns the address of the current owner.

     */

    function owner() public view virtual returns (address) {

        return _owner;

    }



    /**

     * @dev Throws if called by any account other than the owner.

     */

    modifier onlyOwner() {

        require(owner() == _msgSender(), "Ownable: caller is not the owner");

        _;

    }



    /**

     * @dev Leaves the contract without owner. It will not be possible to call

     * `onlyOwner` functions anymore. Can only be called by the current owner.

     *

     * NOTE: Renouncing ownership will leave the contract without an owner,

     * thereby removing any functionality that is only available to the owner.

     */

    function renounceOwnership() public virtual onlyOwner {

        _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);

    }

}



////// lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol

// OpenZeppelin Contracts v4.4.0 (token/ERC20/IERC20.sol)



/* pragma solidity ^0.8.0; */



/**

 * @dev Interface of the ERC20 standard as defined in the EIP.

 */

interface IERC20 {

    /**

     * @dev Returns the amount of tokens in existence.

     */

    function totalSupply() external view returns (uint256);



    /**

     * @dev Returns the amount of tokens owned by `account`.

     */

    function balanceOf(address account) external view returns (uint256);



    /**

     * @dev Moves `amount` tokens from the caller's account to `recipient`.

     *

     * Returns a boolean value indicating whether the operation succeeded.

     *

     * Emits a {Transfer} event.

     */

    function transfer(address recipient, uint256 amount) external returns (bool);



    /**

     * @dev Returns the remaining number of tokens that `spender` will be

     * allowed to spend on behalf of `owner` through {transferFrom}. This is

     * zero by default.

     *

     * This value changes when {approve} or {transferFrom} are called.

     */

    function allowance(address owner, address spender) external view returns (uint256);



    /**

     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.

     *

     * Returns a boolean value indicating whether the operation succeeded.

     *

     * IMPORTANT: Beware that changing an allowance with this method brings the risk

     * that someone may use both the old and the new allowance by unfortunate

     * transaction ordering. One possible solution to mitigate this race

     * condition is to first reduce the spender's allowance to 0 and set the

     * desired value afterwards:

     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729

     *

     * Emits an {Approval} event.

     */

    function approve(address spender, uint256 amount) external returns (bool);



    /**

     * @dev Moves `amount` tokens from `sender` to `recipient` using the

     * allowance mechanism. `amount` is then deducted from the caller's

     * allowance.

     *

     * Returns a boolean value indicating whether the operation succeeded.

     *

     * Emits a {Transfer} event.

     */

    function transferFrom(

        address sender,

        address recipient,

        uint256 amount

    ) external returns (bool);



    /**

     * @dev Emitted when `value` tokens are moved from one account (`from`) to

     * another (`to`).

     *

     * Note that `value` may be zero.

     */

    event Transfer(address indexed from, address indexed to, uint256 value);



    /**

     * @dev Emitted when the allowance of a `spender` for an `owner` is set by

     * a call to {approve}. `value` is the new allowance.

     */

    event Approval(address indexed owner, address indexed spender, uint256 value);

}



////// lib/openzeppelin-contracts/contracts/token/ERC20/extensions/IERC20Metadata.sol

// OpenZeppelin Contracts v4.4.0 (token/ERC20/extensions/IERC20Metadata.sol)



/* pragma solidity ^0.8.0; */



/* import "../IERC20.sol"; */



/**

 * @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);

}



////// lib/openzeppelin-contracts/contracts/token/ERC20/ERC20.sol

// OpenZeppelin Contracts v4.4.0 (token/ERC20/ERC20.sol)



/* pragma solidity ^0.8.0; */



/* import "./IERC20.sol"; */

/* import "./extensions/IERC20Metadata.sol"; */

/* import "../../utils/Context.sol"; */



/**

 * @dev Implementation of the {IERC20} interface.

 *

 * This implementation is agnostic to the way tokens are created. This means

 * that a supply mechanism has to be added in a derived contract using {_mint}.

 * For a generic mechanism see {ERC20PresetMinterPauser}.

 *

 * TIP: For a detailed writeup see our guide

 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How

 * to implement supply mechanisms].

 *

 * We have followed general OpenZeppelin 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}.

     *

     * The default value of {decimals} is 18. To select a different value for

     * {decimals} you should overload it.

     *

     * All two of these values are immutable: they can only be set once during

     * construction.

     */

    constructor(string memory name_, string memory symbol_) {

        _name = name_;

        _symbol = symbol_;

    }



    /**

     * @dev Returns the name of the token.

     */

    function name() public view virtual override returns (string memory) {

        return _name;

    }



    /**

     * @dev Returns the symbol of the token, usually a shorter version of the

     * name.

     */

    function symbol() public view virtual override returns (string memory) {

        return _symbol;

    }



    /**

     * @dev Returns the number of decimals used to get its user representation.

     * For example, if `decimals` equals `2`, a balance of `505` tokens should

     * be displayed to a user as `5.05` (`505 / 10 ** 2`).

     *

     * Tokens usually opt for a value of 18, imitating the relationship between

     * Ether and Wei. This is the value {ERC20} uses, unless this function is

     * overridden;

     *

     * NOTE: This information is only used for _display_ purposes: it in

     * no way affects any of the arithmetic of the contract, including

     * {IERC20-balanceOf} and {IERC20-transfer}.

     */

    function decimals() public view virtual override returns (uint8) {

        return 18;

    }



    /**

     * @dev See {IERC20-totalSupply}.

     */

    function totalSupply() public view virtual override returns (uint256) {

        return _totalSupply;

    }



    /**

     * @dev See {IERC20-balanceOf}.

     */

    function balanceOf(address account) public view virtual override returns (uint256) {

        return _balances[account];

    }



    /**

     * @dev See {IERC20-transfer}.

     *

     * Requirements:

     *

     * - `recipient` cannot be the zero address.

     * - the caller must have a balance of at least `amount`.

     */

    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {

        _transfer(_msgSender(), recipient, amount);

        return true;

    }



    /**

     * @dev See {IERC20-allowance}.

     */

    function allowance(address owner, address spender) public view virtual override returns (uint256) {

        return _allowances[owner][spender];

    }



    /**

     * @dev See {IERC20-approve}.

     *

     * Requirements:

     *

     * - `spender` cannot be the zero address.

     */

    function approve(address spender, uint256 amount) public virtual override returns (bool) {

        _approve(_msgSender(), spender, amount);

        return true;

    }



    /**

     * @dev See {IERC20-transferFrom}.

     *

     * Emits an {Approval} event indicating the updated allowance. This is not

     * required by the EIP. See the note at the beginning of {ERC20}.

     *

     * Requirements:

     *

     * - `sender` and `recipient` cannot be the zero address.

     * - `sender` must have a balance of at least `amount`.

     * - the caller must have allowance for ``sender``'s tokens of at least

     * `amount`.

     */

    function transferFrom(

        address sender,

        address recipient,

        uint256 amount

    ) public virtual override returns (bool) {

        _transfer(sender, recipient, amount);



        uint256 currentAllowance = _allowances[sender][_msgSender()];

        require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");

        unchecked {

            _approve(sender, _msgSender(), currentAllowance - amount);

        }



        return true;

    }



    /**

     * @dev Atomically increases the allowance granted to `spender` by the caller.

     *

     * This is an alternative to {approve} that can be used as a mitigation for

     * problems described in {IERC20-approve}.

     *

     * Emits an {Approval} event indicating the updated allowance.

     *

     * Requirements:

     *

     * - `spender` cannot be the zero address.

     */

    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {

        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);

        return true;

    }



    /**

     * @dev Atomically decreases the allowance granted to `spender` by the caller.

     *

     * This is an alternative to {approve} that can be used as a mitigation for

     * problems described in {IERC20-approve}.

     *

     * Emits an {Approval} event indicating the updated allowance.

     *

     * Requirements:

     *

     * - `spender` cannot be the zero address.

     * - `spender` must have allowance for the caller of at least

     * `subtractedValue`.

     */

    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {

        uint256 currentAllowance = _allowances[_msgSender()][spender];

        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");

        unchecked {

            _approve(_msgSender(), spender, currentAllowance - subtractedValue);

        }



        return true;

    }



    /**

     * @dev Moves `amount` of tokens from `sender` to `recipient`.

     *

     * This internal function is equivalent to {transfer}, and can be used to

     * e.g. implement automatic token fees, slashing mechanisms, etc.

     *

     * Emits a {Transfer} event.

     *

     * Requirements:

     *

     * - `sender` cannot be the zero address.

     * - `recipient` cannot be the zero address.

     * - `sender` must have a balance of at least `amount`.

     */

    function _transfer(

        address sender,

        address recipient,

        uint256 amount

    ) internal virtual {

        require(sender != address(0), "ERC20: transfer from the zero address");

        require(recipient != address(0), "ERC20: transfer to the zero address");



        _beforeTokenTransfer(sender, recipient, amount);



        uint256 senderBalance = _balances[sender];

        require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");

        unchecked {

            _balances[sender] = senderBalance - amount;

        }

        _balances[recipient] += amount;



        emit Transfer(sender, recipient, amount);



        _afterTokenTransfer(sender, recipient, amount);

    }



    /** @dev Creates `amount` tokens and assigns them to `account`, increasing

     * the total supply.

     *

     * Emits a {Transfer} event with `from` set to the zero address.

     *

     * Requirements:

     *

     * - `account` cannot be the zero address.

     */

    function _mint(address account, uint256 amount) internal virtual {

        require(account != address(0), "ERC20: mint to the zero address");



        _beforeTokenTransfer(address(0), account, amount);



        _totalSupply += amount;

        _balances[account] += amount;

        emit Transfer(address(0), account, amount);



        _afterTokenTransfer(address(0), account, amount);

    }



    /**

     * @dev Destroys `amount` tokens from `account`, reducing the

     * total supply.

     *

     * Emits a {Transfer} event with `to` set to the zero address.

     *

     * Requirements:

     *

     * - `account` cannot be the zero address.

     * - `account` must have at least `amount` tokens.

     */

    function _burn(address account, uint256 amount) internal virtual {

        require(account != address(0), "ERC20: burn from the zero address");



        _beforeTokenTransfer(account, address(0), amount);



        uint256 accountBalance = _balances[account];

        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");

        unchecked {

            _balances[account] = accountBalance - amount;

        }

        _totalSupply -= amount;



        emit Transfer(account, address(0), amount);



        _afterTokenTransfer(account, address(0), amount);

    }



    /**

     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.

     *

     * This internal function is equivalent to `approve`, and can be used to

     * e.g. set automatic allowances for certain subsystems, etc.

     *

     * Emits an {Approval} event.

     *

     * Requirements:

     *

     * - `owner` cannot be the zero address.

     * - `spender` cannot be the zero address.

     */

    function _approve(

        address owner,

        address spender,

        uint256 amount

    ) internal virtual {

        require(owner != address(0), "ERC20: approve from the zero address");

        require(spender != address(0), "ERC20: approve to the zero address");



        _allowances[owner][spender] = amount;

        emit Approval(owner, spender, amount);

    }



    /**

     * @dev Hook that is called before any transfer of tokens. This includes

     * minting and burning.

     *

     * Calling conditions:

     *

     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens

     * will be transferred to `to`.

     * - when `from` is zero, `amount` tokens will be minted for `to`.

     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.

     * - `from` and `to` are never both zero.

     *

     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].

     */

    function _beforeTokenTransfer(

        address from,

        address to,

        uint256 amount

    ) internal virtual {}



    /**

     * @dev Hook that is called after any transfer of tokens. This includes

     * minting and burning.

     *

     * Calling conditions:

     *

     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens

     * has been transferred to `to`.

     * - when `from` is zero, `amount` tokens have been minted for `to`.

     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.

     * - `from` and `to` are never both zero.

     *

     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].

     */

    function _afterTokenTransfer(

        address from,

        address to,

        uint256 amount

    ) internal virtual {}

}



////// lib/openzeppelin-contracts/contracts/utils/math/SafeMath.sol

// OpenZeppelin Contracts v4.4.0 (utils/math/SafeMath.sol)



/* pragma solidity ^0.8.0; */



// CAUTION

// This version of SafeMath should only be used with Solidity 0.8 or later,

// because it relies on the compiler's built in overflow checks.



/**

 * @dev Wrappers over Solidity's arithmetic operations.

 *

 * NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler

 * now has built in overflow checking.

 */

library SafeMath {

    /**

     * @dev Returns the addition of two unsigned integers, with an overflow flag.

     *

     * _Available since v3.4._

     */

    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {

        unchecked {

            uint256 c = a + b;

            if (c < a) return (false, 0);

            return (true, c);

        }

    }



    /**

     * @dev Returns the substraction of two unsigned integers, with an overflow flag.

     *

     * _Available since v3.4._

     */

    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {

        unchecked {

            if (b > a) return (false, 0);

            return (true, a - b);

        }

    }



    /**

     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.

     *

     * _Available since v3.4._

     */

    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {

        unchecked {

            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the

            // benefit is lost if 'b' is also tested.

            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522

            if (a == 0) return (true, 0);

            uint256 c = a * b;

            if (c / a != b) return (false, 0);

            return (true, c);

        }

    }



    /**

     * @dev Returns the division of two unsigned integers, with a division by zero flag.

     *

     * _Available since v3.4._

     */

    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {

        unchecked {

            if (b == 0) return (false, 0);

            return (true, a / b);

        }

    }



    /**

     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.

     *

     * _Available since v3.4._

     */

    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {

        unchecked {

            if (b == 0) return (false, 0);

            return (true, a % b);

        }

    }



    /**

     * @dev Returns the addition of two unsigned integers, reverting on

     * overflow.

     *

     * Counterpart to Solidity's `+` operator.

     *

     * Requirements:

     *

     * - Addition cannot overflow.

     */

    function add(uint256 a, uint256 b) internal pure returns (uint256) {

        return a + b;

    }



    /**

     * @dev Returns the subtraction of two unsigned integers, reverting on

     * overflow (when the result is negative).

     *

     * Counterpart to Solidity's `-` operator.

     *

     * Requirements:

     *

     * - Subtraction cannot overflow.

     */

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {

        return a - b;

    }



    /**

     * @dev Returns the multiplication of two unsigned integers, reverting on

     * overflow.

     *

     * Counterpart to Solidity's `*` operator.

     *

     * Requirements:

     *

     * - Multiplication cannot overflow.

     */

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {

        return a * b;

    }



    /**

     * @dev Returns the integer division of two unsigned integers, reverting on

     * division by zero. The result is rounded towards zero.

     *

     * Counterpart to Solidity's `/` operator.

     *

     * Requirements:

     *

     * - The divisor cannot be zero.

     */

    function div(uint256 a, uint256 b) internal pure returns (uint256) {

        return a / b;

    }



    /**

     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),

     * reverting when dividing by zero.

     *

     * Counterpart to Solidity's `%` operator. This function uses a `revert`

     * opcode (which leaves remaining gas untouched) while Solidity uses an

     * invalid opcode to revert (consuming all remaining gas).

     *

     * Requirements:

     *

     * - The divisor cannot be zero.

     */

    function mod(uint256 a, uint256 b) internal pure returns (uint256) {

        return a % b;

    }



    /**

     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on

     * overflow (when the result is negative).

     *

     * CAUTION: This function is deprecated because it requires allocating memory for the error

     * message unnecessarily. For custom revert reasons use {trySub}.

     *

     * Counterpart to Solidity's `-` operator.

     *

     * Requirements:

     *

     * - Subtraction cannot overflow.

     */

    function sub(

        uint256 a,

        uint256 b,

        string memory errorMessage

    ) internal pure returns (uint256) {

        unchecked {

            require(b <= a, errorMessage);

            return a - b;

        }

    }



    /**

     * @dev Returns the integer division of two unsigned integers, reverting with custom message on

     * division by zero. The result is rounded towards zero.

     *

     * Counterpart to Solidity's `/` operator. Note: this function uses a

     * `revert` opcode (which leaves remaining gas untouched) while Solidity

     * uses an invalid opcode to revert (consuming all remaining gas).

     *

     * Requirements:

     *

     * - The divisor cannot be zero.

     */

    function div(

        uint256 a,

        uint256 b,

        string memory errorMessage

    ) internal pure returns (uint256) {

        unchecked {

            require(b > 0, errorMessage);

            return a / b;

        }

    }



    /**

     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),

     * reverting with custom message when dividing by zero.

     *

     * CAUTION: This function is deprecated because it requires allocating memory for the error

     * message unnecessarily. For custom revert reasons use {tryMod}.

     *

     * Counterpart to Solidity's `%` operator. This function uses a `revert`

     * opcode (which leaves remaining gas untouched) while Solidity uses an

     * invalid opcode to revert (consuming all remaining gas).

     *

     * Requirements:

     *

     * - The divisor cannot be zero.

     */

    function mod(

        uint256 a,

        uint256 b,

        string memory errorMessage

    ) internal pure returns (uint256) {

        unchecked {

            require(b > 0, errorMessage);

            return a % b;

        }

    }

}



////// src/IUniswapV2Factory.sol

/* pragma solidity 0.8.10; */

/* pragma experimental ABIEncoderV2; */



interface IUniswapV2Factory {

    event PairCreated(

        address indexed token0,

        address indexed token1,

        address pair,

        uint256

    );



    function feeTo() external view returns (address);



    function feeToSetter() external view returns (address);



    function getPair(address tokenA, address tokenB)

        external

        view

        returns (address pair);



    function allPairs(uint256) external view returns (address pair);



    function allPairsLength() external view returns (uint256);



    function createPair(address tokenA, address tokenB)

        external

        returns (address pair);



    function setFeeTo(address) external;



    function setFeeToSetter(address) external;

}



////// src/IUniswapV2Pair.sol

/* pragma solidity 0.8.10; */

/* pragma experimental ABIEncoderV2; */



interface IUniswapV2Pair {

    event Approval(

        address indexed owner,

        address indexed spender,

        uint256 value

    );

    event Transfer(address indexed from, address indexed to, uint256 value);



    function name() external pure returns (string memory);



    function symbol() external pure returns (string memory);



    function decimals() external pure returns (uint8);



    function totalSupply() external view returns (uint256);



    function balanceOf(address owner) external view returns (uint256);



    function allowance(address owner, address spender)

        external

        view

        returns (uint256);



    function approve(address spender, uint256 value) external returns (bool);



    function transfer(address to, uint256 value) external returns (bool);



    function transferFrom(

        address from,

        address to,

        uint256 value

    ) external returns (bool);



    function DOMAIN_SEPARATOR() external view returns (bytes32);



    function PERMIT_TYPEHASH() external pure returns (bytes32);



    function nonces(address owner) external view returns (uint256);



    function permit(

        address owner,

        address spender,

        uint256 value,

        uint256 deadline,

        uint8 v,

        bytes32 r,

        bytes32 s

    ) external;



    event Mint(address indexed sender, uint256 amount0, uint256 amount1);

    event Burn(

        address indexed sender,

        uint256 amount0,

        uint256 amount1,

        address indexed to

    );

    event Swap(

        address indexed sender,

        uint256 amount0In,

        uint256 amount1In,

        uint256 amount0Out,

        uint256 amount1Out,

        address indexed to

    );

    event Sync(uint112 reserve0, uint112 reserve1);



    function MINIMUM_LIQUIDITY() external pure returns (uint256);



    function factory() external view returns (address);



    function token0() external view returns (address);



    function token1() external view returns (address);



    function getReserves()

        external

        view

        returns (

            uint112 reserve0,

            uint112 reserve1,

            uint32 blockTimestampLast

        );



    function price0CumulativeLast() external view returns (uint256);



    function price1CumulativeLast() external view returns (uint256);



    function kLast() external view returns (uint256);



    function mint(address to) external returns (uint256 liquidity);



    function burn(address to)

        external

        returns (uint256 amount0, uint256 amount1);



    function swap(

        uint256 amount0Out,

        uint256 amount1Out,

        address to,

        bytes calldata data

    ) external;



    function skim(address to) external;



    function sync() external;



    function initialize(address, address) external;

}



////// src/IUniswapV2Router02.sol

/* pragma solidity 0.8.10; */

/* pragma experimental ABIEncoderV2; */



interface IUniswapV2Router02 {

    function factory() external pure returns (address);



    function WETH() external pure returns (address);



    function addLiquidity(

        address tokenA,

        address tokenB,

        uint256 amountADesired,

        uint256 amountBDesired,

        uint256 amountAMin,

        uint256 amountBMin,

        address to,

        uint256 deadline

    )

        external

        returns (

            uint256 amountA,

            uint256 amountB,

            uint256 liquidity

        );



    function addLiquidityETH(

        address token,

        uint256 amountTokenDesired,

        uint256 amountTokenMin,

        uint256 amountETHMin,

        address to,

        uint256 deadline

    )

        external

        payable

        returns (

            uint256 amountToken,

            uint256 amountETH,

            uint256 liquidity

        );



    function swapExactTokensForTokensSupportingFeeOnTransferTokens(

        uint256 amountIn,

        uint256 amountOutMin,

        address[] calldata path,

        address to,

        uint256 deadline

    ) external;



    function swapExactETHForTokensSupportingFeeOnTransferTokens(

        uint256 amountOutMin,

        address[] calldata path,

        address to,

        uint256 deadline

    ) external payable;



    function swapExactTokensForETHSupportingFeeOnTransferTokens(

        uint256 amountIn,

        uint256 amountOutMin,

        address[] calldata path,

        address to,

        uint256 deadline

    ) external;

}



////// src/Tsukim.sol

/* pragma solidity >=0.8.10; */



/* import {IUniswapV2Router02} from "./IUniswapV2Router02.sol"; */

/* import {IUniswapV2Factory} from "./IUniswapV2Factory.sol"; */

/* import {IUniswapV2Pair} from "./IUniswapV2Pair.sol"; */

/* import {IERC20} from "lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol"; */

/* import {ERC20} from "lib/openzeppelin-contracts/contracts/token/ERC20/ERC20.sol"; */

/* import {Ownable} from "lib/openzeppelin-contracts/contracts/access/Ownable.sol"; */

/* import {SafeMath} from "lib/openzeppelin-contracts/contracts/utils/math/SafeMath.sol"; */



contract LegendOfTsukim is ERC20, Ownable {

    using SafeMath for uint256;



    IUniswapV2Router02 public immutable uniswapV2Router;

    address public immutable uniswapV2Pair;

    address public constant deadAddress = address(0xdead);



    bool private swapping;



    address public marketingWallet;

    address public devWallet;



    uint256 public maxTransactionAmount;

    uint256 public swapTokensAtAmount;

    uint256 public maxWallet;



    uint256 public percentForLPBurn = 25; // 25 = .25%

    bool public lpBurnEnabled = true;

    uint256 public lpBurnFrequency = 3600 seconds;

    uint256 public lastLpBurnTime;



    uint256 public manualBurnFrequency = 30 minutes;

    uint256 public lastManualLpBurnTime;



    bool public limitsInEffect = true;

    bool public tradingActive = false;

    bool public swapEnabled = false;



    // Anti-bot and anti-whale mappings and variables

    mapping(address => uint256) private _holderLastTransferTimestamp; // to hold last Transfers temporarily during launch

    bool public transferDelayEnabled = true;



    uint256 public buyTotalFees;

    uint256 public buyMarketingFee;

    uint256 public buyLiquidityFee;

    uint256 public buyDevFee;



    uint256 public sellTotalFees;

    uint256 public sellMarketingFee;

    uint256 public sellLiquidityFee;

    uint256 public sellDevFee;



    uint256 public tokensForMarketing;

    uint256 public tokensForLiquidity;

    uint256 public tokensForDev;



    /******************/



    // exlcude from fees and max transaction amount

    mapping(address => bool) private _isExcludedFromFees;

    mapping(address => bool) public _isExcludedMaxTransactionAmount;



    // store addresses that a automatic market maker pairs. Any transfer *to* these addresses

    // could be subject to a maximum transfer amount

    mapping(address => bool) public automatedMarketMakerPairs;



    event UpdateUniswapV2Router(

        address indexed newAddress,

        address indexed oldAddress

    );



    event ExcludeFromFees(address indexed account, bool isExcluded);



    event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);



    event marketingWalletUpdated(

        address indexed newWallet,

        address indexed oldWallet

    );



    event devWalletUpdated(

        address indexed newWallet,

        address indexed oldWallet

    );



    event SwapAndLiquify(

        uint256 tokensSwapped,

        uint256 ethReceived,

        uint256 tokensIntoLiquidity

    );



    event AutoNukeLP();



    event ManualNukeLP();



    constructor() ERC20("Legend Of Tsukim", "TSUKIM") {

        IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(

            0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D

        );



        excludeFromMaxTransaction(address(_uniswapV2Router), true);

        uniswapV2Router = _uniswapV2Router;



        uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())

            .createPair(address(this), _uniswapV2Router.WETH());

        excludeFromMaxTransaction(address(uniswapV2Pair), true);

        _setAutomatedMarketMakerPair(address(uniswapV2Pair), true);



        uint256 _buyMarketingFee = 3;

        uint256 _buyLiquidityFee = 0;

        uint256 _buyDevFee = 0;



        uint256 _sellMarketingFee = 3;

        uint256 _sellLiquidityFee = 0;

        uint256 _sellDevFee = 0;



        uint256 totalSupply = 1_000_000_000 * 1e18;



        maxTransactionAmount = 10_000_000 * 1e18; // 1% from total supply maxTransactionAmountTxn

        maxWallet = 30_000_000 * 1e18; // 2% from total supply maxWallet

        swapTokensAtAmount = (totalSupply * 5) / 10000; // 0.05% swap wallet



        buyMarketingFee = _buyMarketingFee;

        buyLiquidityFee = _buyLiquidityFee;

        buyDevFee = _buyDevFee;

        buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee;



        sellMarketingFee = _sellMarketingFee;

        sellLiquidityFee = _sellLiquidityFee;

        sellDevFee = _sellDevFee;

        sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;



        marketingWallet = address(0xbC0761aae76BD7cf24B2823E8e12c9d8693792ff); // set as marketing wallet

        devWallet = address(0xbC0761aae76BD7cf24B2823E8e12c9d8693792ff); // set as dev wallet



        // exclude from paying fees or having max transaction amount

        excludeFromFees(owner(), true);

        excludeFromFees(address(this), true);

        excludeFromFees(address(0xdead), true);



        excludeFromMaxTransaction(owner(), true);

        excludeFromMaxTransaction(address(this), true);

        excludeFromMaxTransaction(address(0xdead), true);



        /*

            _mint is an internal function in ERC20.sol that is only called here,

            and CANNOT be called ever again

        */

        _mint(msg.sender, totalSupply);

    }



    receive() external payable {}



    // once enabled, can never be turned off

    function enableTrading() external onlyOwner {

        tradingActive = true;

        swapEnabled = true;

        lastLpBurnTime = block.timestamp;

    }



    // remove limits after token is stable

    function removeLimits() external onlyOwner returns (bool) {

        limitsInEffect = false;

        return true;

    }



    // disable Transfer delay - cannot be reenabled

    function disableTransferDelay() external onlyOwner returns (bool) {

        transferDelayEnabled = false;

        return true;

    }



    // change the minimum amount of tokens to sell from fees

    function updateSwapTokensAtAmount(uint256 newAmount)

        external

        onlyOwner

        returns (bool)

    {

        require(

            newAmount >= (totalSupply() * 1) / 100000,

            "Swap amount cannot be lower than 0.001% total supply."

        );

        require(

            newAmount <= (totalSupply() * 5) / 1000,

            "Swap amount cannot be higher than 0.5% total supply."

        );

        swapTokensAtAmount = newAmount;

        return true;

    }



    function updateMaxTxnAmount(uint256 newNum) external onlyOwner {

        require(

            newNum >= ((totalSupply() * 1) / 1000) / 1e18,

            "Cannot set maxTransactionAmount lower than 0.1%"

        );

        maxTransactionAmount = newNum * (10**18);

    }



    function updateMaxWalletAmount(uint256 newNum) external onlyOwner {

        require(

            newNum >= ((totalSupply() * 5) / 1000) / 1e18,

            "Cannot set maxWallet lower than 0.5%"

        );

        maxWallet = newNum * (10**18);

    }



    function excludeFromMaxTransaction(address updAds, bool isEx)

        public

        onlyOwner

    {

        _isExcludedMaxTransactionAmount[updAds] = isEx;

    }



    // only use to disable contract sales if absolutely necessary (emergency use only)

    function updateSwapEnabled(bool enabled) external onlyOwner {

        swapEnabled = enabled;

    }



    function updateBuyFees(

        uint256 _marketingFee,

        uint256 _liquidityFee,

        uint256 _devFee

    ) external onlyOwner {

        buyMarketingFee = _marketingFee;

        buyLiquidityFee = _liquidityFee;

        buyDevFee = _devFee;

        buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee;

        require(buyTotalFees <= 20, "Must keep fees at 20% or less");

    }



    function updateSellFees(

        uint256 _marketingFee,

        uint256 _liquidityFee,

        uint256 _devFee

    ) external onlyOwner {

        sellMarketingFee = _marketingFee;

        sellLiquidityFee = _liquidityFee;

        sellDevFee = _devFee;

        sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;

        require(sellTotalFees <= 25, "Must keep fees at 25% or less");

    }



    function excludeFromFees(address account, bool excluded) public onlyOwner {

        _isExcludedFromFees[account] = excluded;

        emit ExcludeFromFees(account, excluded);

    }



    function setAutomatedMarketMakerPair(address pair, bool value)

        public

        onlyOwner

    {

        require(

            pair != uniswapV2Pair,

            "The pair cannot be removed from automatedMarketMakerPairs"

        );



        _setAutomatedMarketMakerPair(pair, value);

    }



    function _setAutomatedMarketMakerPair(address pair, bool value) private {

        automatedMarketMakerPairs[pair] = value;



        emit SetAutomatedMarketMakerPair(pair, value);

    }



    function updateMarketingWallet(address newMarketingWallet)

        external

        onlyOwner

    {

        emit marketingWalletUpdated(newMarketingWallet, marketingWallet);

        marketingWallet = newMarketingWallet;

    }



    function updateDevWallet(address newWallet) external onlyOwner {

        emit devWalletUpdated(newWallet, devWallet);

        devWallet = newWallet;

    }



    function isExcludedFromFees(address account) public view returns (bool) {

        return _isExcludedFromFees[account];

    }



    event BoughtEarly(address indexed sniper);



    function _transfer(

        address from,

        address to,

        uint256 amount

    ) internal override {

        require(from != address(0), "ERC20: transfer from the zero address");

        require(to != address(0), "ERC20: transfer to the zero address");



        if (amount == 0) {

            super._transfer(from, to, 0);

            return;

        }



        if (limitsInEffect) {

            if (

                from != owner() &&

                to != owner() &&

                to != address(0) &&

                to != address(0xdead) &&

                !swapping

            ) {

                if (!tradingActive) {

                    require(

                        _isExcludedFromFees[from] || _isExcludedFromFees[to],

                        "Trading is not active."

                    );

                }



                // at launch if the transfer delay is enabled, ensure the block timestamps for purchasers is set -- during launch.

                if (transferDelayEnabled) {

                    if (

                        to != owner() &&

                        to != address(uniswapV2Router) &&

                        to != address(uniswapV2Pair)

                    ) {

                        require(

                            _holderLastTransferTimestamp[tx.origin] <

                                block.number,

                            "_transfer:: Transfer Delay enabled.  Only one purchase per block allowed."

                        );

                        _holderLastTransferTimestamp[tx.origin] = block.number;

                    }

                }



                //when buy

                if (

                    automatedMarketMakerPairs[from] &&

                    !_isExcludedMaxTransactionAmount[to]

                ) {

                    require(

                        amount <= maxTransactionAmount,

                        "Buy transfer amount exceeds the maxTransactionAmount."

                    );

                    require(

                        amount + balanceOf(to) <= maxWallet,

                        "Max wallet exceeded"

                    );

                }

                //when sell

                else if (

                    automatedMarketMakerPairs[to] &&

                    !_isExcludedMaxTransactionAmount[from]

                ) {

                    require(

                        amount <= maxTransactionAmount,

                        "Sell transfer amount exceeds the maxTransactionAmount."

                    );

                } else if (!_isExcludedMaxTransactionAmount[to]) {

                    require(

                        amount + balanceOf(to) <= maxWallet,

                        "Max wallet exceeded"

                    );

                }

            }

        }



        uint256 contractTokenBalance = balanceOf(address(this));



        bool canSwap = contractTokenBalance >= swapTokensAtAmount;



        if (

            canSwap &&

            swapEnabled &&

            !swapping &&

            !automatedMarketMakerPairs[from] &&

            !_isExcludedFromFees[from] &&

            !_isExcludedFromFees[to]

        ) {

            swapping = true;



            swapBack();



            swapping = false;

        }



        if (

            !swapping &&

            automatedMarketMakerPairs[to] &&

            lpBurnEnabled &&

            block.timestamp >= lastLpBurnTime + lpBurnFrequency &&

            !_isExcludedFromFees[from]

        ) {

            autoBurnLiquidityPairTokens();

        }



        bool takeFee = !swapping;



        // if any account belongs to _isExcludedFromFee account then remove the fee

        if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {

            takeFee = false;

        }



        uint256 fees = 0;

        // only take fees on buys/sells, do not take on wallet transfers

        if (takeFee) {

            // on sell

            if (automatedMarketMakerPairs[to] && sellTotalFees > 0) {

                fees = amount.mul(sellTotalFees).div(100);

                tokensForLiquidity += (fees * sellLiquidityFee) / sellTotalFees;

                tokensForDev += (fees * sellDevFee) / sellTotalFees;

                tokensForMarketing += (fees * sellMarketingFee) / sellTotalFees;

            }

            // on buy

            else if (automatedMarketMakerPairs[from] && buyTotalFees > 0) {

                fees = amount.mul(buyTotalFees).div(100);

                tokensForLiquidity += (fees * buyLiquidityFee) / buyTotalFees;

                tokensForDev += (fees * buyDevFee) / buyTotalFees;

                tokensForMarketing += (fees * buyMarketingFee) / buyTotalFees;

            }



            if (fees > 0) {

                super._transfer(from, address(this), fees);

            }



            amount -= fees;

        }



        super._transfer(from, to, amount);

    }



    function swapTokensForEth(uint256 tokenAmount) private {

        // generate the uniswap pair path of token -> weth

        address[] memory path = new address[](2);

        path[0] = address(this);

        path[1] = uniswapV2Router.WETH();



        _approve(address(this), address(uniswapV2Router), tokenAmount);



        // make the swap

        uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(

            tokenAmount,

            0, // accept any amount of ETH

            path,

            address(this),

            block.timestamp

        );

    }



    function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {

        // approve token transfer to cover all possible scenarios

        _approve(address(this), address(uniswapV2Router), tokenAmount);



        // add the liquidity

        uniswapV2Router.addLiquidityETH{value: ethAmount}(

            address(this),

            tokenAmount,

            0, // slippage is unavoidable

            0, // slippage is unavoidable

            deadAddress,

            block.timestamp

        );

    }



    function swapBack() private {

        uint256 contractBalance = balanceOf(address(this));

        uint256 totalTokensToSwap = tokensForLiquidity +

            tokensForMarketing +

            tokensForDev;

        bool success;



        if (contractBalance == 0 || totalTokensToSwap == 0) {

            return;

        }



        if (contractBalance > swapTokensAtAmount * 20) {

            contractBalance = swapTokensAtAmount * 20;

        }



        // Halve the amount of liquidity tokens

        uint256 liquidityTokens = (contractBalance * tokensForLiquidity) /

            totalTokensToSwap /

            2;

        uint256 amountToSwapForETH = contractBalance.sub(liquidityTokens);



        uint256 initialETHBalance = address(this).balance;



        swapTokensForEth(amountToSwapForETH);



        uint256 ethBalance = address(this).balance.sub(initialETHBalance);



        uint256 ethForMarketing = ethBalance.mul(tokensForMarketing).div(

            totalTokensToSwap

        );

        uint256 ethForDev = ethBalance.mul(tokensForDev).div(totalTokensToSwap);



        uint256 ethForLiquidity = ethBalance - ethForMarketing - ethForDev;



        tokensForLiquidity = 0;

        tokensForMarketing = 0;

        tokensForDev = 0;



        (success, ) = address(devWallet).call{value: ethForDev}("");



        if (liquidityTokens > 0 && ethForLiquidity > 0) {

            addLiquidity(liquidityTokens, ethForLiquidity);

            emit SwapAndLiquify(

                amountToSwapForETH,

                ethForLiquidity,

                tokensForLiquidity

            );

        }



        (success, ) = address(marketingWallet).call{

            value: address(this).balance

        }("");

    }



    function setAutoLPBurnSettings(

        uint256 _frequencyInSeconds,

        uint256 _percent,

        bool _Enabled

    ) external onlyOwner {

        require(

            _frequencyInSeconds >= 600,

            "cannot set buyback more often than every 10 minutes"

        );

        require(

            _percent <= 1000 && _percent >= 0,

            "Must set auto LP burn percent between 0% and 10%"

        );

        lpBurnFrequency = _frequencyInSeconds;

        percentForLPBurn = _percent;

        lpBurnEnabled = _Enabled;

    }



    function autoBurnLiquidityPairTokens() internal returns (bool) {

        lastLpBurnTime = block.timestamp;



        // get balance of liquidity pair

        uint256 liquidityPairBalance = this.balanceOf(uniswapV2Pair);



        // calculate amount to burn

        uint256 amountToBurn = liquidityPairBalance.mul(percentForLPBurn).div(

            10000

        );



        // pull tokens from pancakePair liquidity and move to dead address permanently

        if (amountToBurn > 0) {

            super._transfer(uniswapV2Pair, address(0xdead), amountToBurn);

        }



        //sync price since this is not in a swap transaction!

        IUniswapV2Pair pair = IUniswapV2Pair(uniswapV2Pair);

        pair.sync();

        emit AutoNukeLP();

        return true;

    }



    function manualBurnLiquidityPairTokens(uint256 percent)

        external

        onlyOwner

        returns (bool)

    {

        require(

            block.timestamp > lastManualLpBurnTime + manualBurnFrequency,

            "Must wait for cooldown to finish"

        );

        require(percent <= 1000, "May not nuke more than 10% of tokens in LP");

        lastManualLpBurnTime = block.timestamp;



        // get balance of liquidity pair

        uint256 liquidityPairBalance = this.balanceOf(uniswapV2Pair);



        // calculate amount to burn

        uint256 amountToBurn = liquidityPairBalance.mul(percent).div(10000);



        // pull tokens from pancakePair liquidity and move to dead address permanently

        if (amountToBurn > 0) {

            super._transfer(uniswapV2Pair, address(0xdead), amountToBurn);

        }



        //sync price since this is not in a swap transaction!

        IUniswapV2Pair pair = IUniswapV2Pair(uniswapV2Pair);

        pair.sync();

        emit ManualNukeLP();

        return true;

    }

}