// File: @openzeppelin/contracts/utils/math/SafeMath.sol


// OpenZeppelin Contracts (last updated v4.6.0) (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 subtraction 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;
        }
    }
}

// File: Libraries.sol


pragma solidity 0.8.15;

interface IDexRouter {
    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;

    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable;

    function addLiquidityETH(
        address token,
        uint256 amountTokenDesired,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    )
        external
        payable
        returns (
            uint256 amountToken,
            uint256 amountETH,
            uint256 liquidity
        );

    function getAmountsOut(uint256 amountIn, address[] calldata path)
        external
        view
        returns (uint256[] memory amounts);
}

interface IDexFactory {
    function createPair(address tokenA, address tokenB)
        external
        returns (address pair);
}

interface IDexPair {
    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;

    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;
}
// File: @openzeppelin/contracts/utils/Context.sol


// 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


// OpenZeppelin Contracts (last updated v4.7.0) (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 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);
    }
}

// File: @openzeppelin/contracts/token/ERC20/IERC20.sol


// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);
}

// File: @openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol


// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;


/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// File: @openzeppelin/contracts/token/ERC20/ERC20.sol


// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)

pragma solidity ^0.8.0;




/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.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:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }

        return true;
    }

    /**
     * @dev Moves `amount` of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     */
    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(from, to, amount);

        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
        }
        _balances[to] += amount;

        emit Transfer(from, to, amount);

        _afterTokenTransfer(from, to, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        _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 Updates `owner` s allowance for `spender` based on spent `amount`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    function _spendAllowance(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}

    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}

// File: Jackpot.sol


pragma solidity 0.8.15;






function uint2str(uint256 _i) pure returns (string memory _uintAsString) {
    if (_i == 0) {
        return "0";
    }
    uint256 j = _i;
    uint256 len;
    while (j != 0) {
        len++;
        j /= 10;
    }
    bytes memory bstr = new bytes(len);
    uint256 k = len;
    while (_i != 0) {
        k = k - 1;
        uint8 temp = (48 + uint8(_i - (_i / 10) * 10));
        bytes1 b1 = bytes1(temp);
        bstr[k] = b1;
        _i /= 10;
    }
    return string(bstr);
}

contract Jackpot is ERC20, Ownable {
    using SafeMath for uint256;

    address[] public previousBuyersList;
    uint256[] public previousAmountsList;
    uint256 public lastJackpotTimestamp;

    address[] public buyersList;
    uint256 public timeBetweenBuysForJackpot;
    uint256 public numberOfBuysForJackpot;
    uint256 public minBuyAmount;
    bool public minBuyEnforced;
    uint256 public percentForJackpot;
    bool public jackpotEnabled;
    uint256 public lastBuyTimestamp;

    uint256 public minHoldingsAmount;

    IDexRouter public dexRouter;
    address public lpPair;

    bool private swapping;
    uint256 public swapTokensAtAmount;

    address operationsAddress;

    uint256 public tradingActiveBlock; 
    uint256 public blockForPenaltyEnd;
    mapping(address => bool) public botWallet;
    uint256 public botsCaught;

    bool public tradingActive;
    bool public swapEnabled;

    uint256 public buyTotalFees;
    uint256 public buyOperationsFee;
    uint256 public buyLiquidityFee;
    uint256 public buyJackpotFee;

    uint256 public originalSellOperationsFee;
    uint256 public originalSellLiquidityFee;
    uint256 public originalSellJackpotFee;

    uint256 public sellTotalFees;
    uint256 public sellOperationsFee;
    uint256 public sellLiquidityFee;
    uint256 public sellJackpotFee;

    uint256 public tokensForOperations;
    uint256 public tokensForLiquidity;
    uint256 public tokensForJackpot;

    uint256 public FEE_DENOMINATOR;

    /******************/

    // exlcude from fees
    mapping(address => bool) public _isExcludedFromFees;

    // store addresses that a automatic market maker pairs. Any transfer *to* these addresses
    mapping(address => bool) public automatedMarketMakerPairs;

    event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);

    event EnabledTrading();

    event DisabledJeetTaxes();

    event ExcludeFromFees(address indexed account, bool isExcluded);

    event UpdatedOperationsAddress(address indexed newWallet);

    event BuyBackTriggered(uint256 amount);

    event OwnerForcedSwapBack(uint256 timestamp);

    event CaughtBot(address sniper);

    event TransferForeignToken(address token, uint256 amount);

    event JackpotTriggered(uint256 indexed amount, address indexed wallet);

    constructor(address _dexRouter, address _operationsAddress)
        ERC20("The Jackpot", "JACKPOT")
    {
        address newOwner = msg.sender;

        // PCS Main
        dexRouter = IDexRouter(_dexRouter);

        // create pair
        lpPair = IDexFactory(dexRouter.factory()).createPair(
            address(this),
            dexRouter.WETH()
        );
        _setAutomatedMarketMakerPair(address(lpPair), true);

        operationsAddress = address(_operationsAddress);

        uint256 totalSupply = 1 * 1e9 * 1e18;

        swapTokensAtAmount = (totalSupply * 25) / 100000; // 0.025%

        buyOperationsFee = 0;
        buyLiquidityFee = 0;
        buyJackpotFee = 0;
        buyTotalFees = buyOperationsFee + buyLiquidityFee + buyJackpotFee;

        originalSellOperationsFee = 400;
        originalSellLiquidityFee = 100;
        originalSellJackpotFee = 700;

        sellOperationsFee = 500;
        sellLiquidityFee = 0;
        sellJackpotFee = 1000;
        sellTotalFees = sellOperationsFee + sellLiquidityFee + sellJackpotFee;

        excludeFromFees(newOwner, true);
        excludeFromFees(msg.sender, true);
        excludeFromFees(operationsAddress, true);
        excludeFromFees(address(this), true);
        excludeFromFees(address(0xdead), true);
        excludeFromFees(address(dexRouter), true);

        timeBetweenBuysForJackpot = 10 minutes;
        numberOfBuysForJackpot = 10;
        minBuyAmount = .1 ether;
        minHoldingsAmount = .5 ether;
        minBuyEnforced = true;
        percentForJackpot = 25;
        jackpotEnabled = true;

        tradingActive = false; // trading is inactive first time until LP o no one can ruin the launch. 
                               // Once it is activated there is no way to desactivate it again.
        swapEnabled = false;

        tradingActiveBlock = 0;

        FEE_DENOMINATOR = 10000;

        _mint(newOwner, totalSupply);

        transferOwnership(newOwner);
    }

    receive() external payable {}

    // only use if conducting a presale
    function addPresaleAddressForExclusions(address _presaleAddress)
        external
        onlyOwner
    {
        excludeFromFees(_presaleAddress, true);
    }

    function enableTrading(uint256 blocksForPenalty) external onlyOwner {
        require(blockForPenaltyEnd == 0);
        tradingActive = true;
        swapEnabled = true;
        tradingActiveBlock = block.number;
        blockForPenaltyEnd = tradingActiveBlock + blocksForPenalty;
        lastBuyTimestamp = block.timestamp;
        emit EnabledTrading();
    }

    function setJackpotEnabled(bool enabled) external onlyOwner {
        jackpotEnabled = enabled;
    }
    function setSwapBackEnabled(bool enabled) external onlyOwner {
        swapEnabled = enabled;
    }
    function emergencyWithdraw(uint256 amount) external onlyOwner {
        transfer(msg.sender, amount);
    }

    function manageBots(
        address[] calldata wallets,
        bool restricted
    ) external onlyOwner {
        for (uint256 i = 0; i < wallets.length; i++) {
            botWallet[wallets[i]] = restricted;
        }
    }

    // change the minimum amount of tokens to sell from fees
    function updateSwapTokensAtAmount(uint256 newAmount) external onlyOwner {
        require(newAmount >= (totalSupply() * 1) / 100000);
        require(newAmount <= (totalSupply() * 1) / 1000);
        swapTokensAtAmount = newAmount;
    }

    function airdropToWallets(
        address[] memory wallets,
        uint256[] memory amountsInTokens
    ) external onlyOwner {
        require(wallets.length == amountsInTokens.length);
        require(wallets.length < 600); // allows for airdrop + launch at the same exact time, reducing delays and reducing sniper input.
        for (uint256 i = 0; i < wallets.length; i++) {
            super._transfer(msg.sender, wallets[i], amountsInTokens[i]);
        }
    }

    function setNumberOfBuysForJackpot(uint256 num) external onlyOwner {
        require(
            num >= 2 && num <= 100,
            "Must keep number of buys between 2 and 100"
        );
        numberOfBuysForJackpot = num;
    }

    function setAutomatedMarketMakerPair(address pair, bool value)
        external
        onlyOwner
    {
        require(
            pair != lpPair,
            "The pair cannot be removed from automatedMarketMakerPairs"
        );

        _setAutomatedMarketMakerPair(pair, value);
        emit SetAutomatedMarketMakerPair(pair, value);
    }

    function _setAutomatedMarketMakerPair(address pair, bool value) private {
        automatedMarketMakerPairs[pair] = value;

        emit SetAutomatedMarketMakerPair(pair, value);
    }

    function updateBuyFees(
        uint256 _operationsFee,
        uint256 _liquidityFee,
        uint256 _jackpotFee
    ) external onlyOwner {
        buyOperationsFee = _operationsFee;
        buyLiquidityFee = _liquidityFee;
        buyJackpotFee = _jackpotFee;
        buyTotalFees = buyOperationsFee + buyLiquidityFee + buyJackpotFee;
        require(buyTotalFees <= 1500, "Must keep fees at 15% or less");
    }

    function updateSellFees(
        uint256 _operationsFee,
        uint256 _liquidityFee,
        uint256 _jackpotFee
    ) external onlyOwner {
        sellOperationsFee = _operationsFee;
        sellLiquidityFee = _liquidityFee;
        sellJackpotFee = _jackpotFee;
        sellTotalFees = sellOperationsFee + sellLiquidityFee + sellJackpotFee;
        require(sellTotalFees <= 2000, "Must keep fees at 20% or less");
    }

    function disableJeetTaxes() external onlyOwner {
        sellOperationsFee = originalSellOperationsFee;
        sellLiquidityFee = originalSellLiquidityFee;
        sellJackpotFee = originalSellJackpotFee;
        sellTotalFees = sellOperationsFee + sellLiquidityFee + sellJackpotFee;

        emit DisabledJeetTaxes();
    }

    function excludeFromFees(address account, bool excluded) public onlyOwner {
        _isExcludedFromFees[account] = excluded;
        emit ExcludeFromFees(account, excluded);
    }

    function checkJackpot() public {
        if (jackpotEnabled) {
            bool shouldPayout = block.timestamp >=
                lastBuyTimestamp + timeBetweenBuysForJackpot &&
                address(this).balance >= 0.1 ether &&
                buyersList.length >= numberOfBuysForJackpot;
            payoutRewards(!shouldPayout);
        }
    }

    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");
        require(amount > 0, "ERC20: transfer must be greater than 0");

        if (!tradingActive) {
            require(
                _isExcludedFromFees[from] || _isExcludedFromFees[to],
                "Trading is not active."
            );
        }

        if (!earlyBuyPenaltyInEffect() && blockForPenaltyEnd > 0) {
            require(
                !botWallet[from] ||
                    to == owner() ||
                    to == address(0xdead),
                "Bots cannot transfer tokens in or out except to owner or dead address."
            );
        }

        uint256 contractTokenBalance = balanceOf(address(this));

        bool canSwap = contractTokenBalance >= swapTokensAtAmount;

        if (
            canSwap &&
            swapEnabled &&
            !swapping &&
            !automatedMarketMakerPairs[from] &&
            !_isExcludedFromFees[from] &&
            !_isExcludedFromFees[to]
        ) {
            swapping = true;
            swapBack();
            swapping = false;
        }

        bool takeFee = true;
        // 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) {
            // bot/sniper penalty.
            if (
                earlyBuyPenaltyInEffect() &&
                automatedMarketMakerPairs[from] &&
                !automatedMarketMakerPairs[to]
            ) {
                if (!botWallet[to]) {
                    botWallet[to] = true;
                    botsCaught += 1;
                    emit CaughtBot(to);
                }

                if (buyTotalFees > 0) {
                    fees = (amount * (buyTotalFees)) / FEE_DENOMINATOR;
                    tokensForLiquidity +=
                        (fees * buyLiquidityFee) /
                        buyTotalFees;
                    tokensForOperations +=
                        (fees * buyOperationsFee) /
                        buyTotalFees;
                    tokensForJackpot += (fees * buyJackpotFee) / buyTotalFees;
                }
            }
            // on sell
            else if (automatedMarketMakerPairs[to] && sellTotalFees > 0) {
                fees = (amount * (sellTotalFees)) / FEE_DENOMINATOR;
                tokensForLiquidity += (fees * sellLiquidityFee) / sellTotalFees;
                tokensForOperations +=
                    (fees * sellOperationsFee) /
                    sellTotalFees;
                tokensForJackpot += (fees * sellJackpotFee) / sellTotalFees;
            }
            // on buy
            else if (automatedMarketMakerPairs[from]) {
                checkJackpot();
                if (
                    (!minBuyEnforced || amount >= getMinBuy()) &&
                    hasEnoughTokens(balanceOf(to).add(amount))
                ) {
                    addBuyer((to));
                }

                lastBuyTimestamp = block.timestamp;

                if (buyTotalFees > 0) {
                    fees = (amount * (buyTotalFees)) / FEE_DENOMINATOR;
                    tokensForLiquidity +=
                        (fees * buyLiquidityFee) /
                        buyTotalFees;
                    tokensForOperations +=
                        (fees * buyOperationsFee) /
                        buyTotalFees;
                    tokensForJackpot += (fees * buyJackpotFee) / buyTotalFees;
                }
            }

            if (fees > 0) {
                super._transfer(from, address(this), fees);
            }

            amount -= fees;
        }

        super._transfer(from, to, amount);
    }

    function earlyBuyPenaltyInEffect() public view returns (bool) {
        return block.number < blockForPenaltyEnd;
    }

    function getMinBuy() public view returns (uint256) {
        return calcAmount(minBuyAmount);
    }

    function getMinHoldings() public view returns (uint256) {
        return calcAmount(minHoldingsAmount);
    }

    function calcAmount(uint256 _quantity) public view returns (uint256) {
        address[] memory path = new address[](2);
        path[0] = dexRouter.WETH();
        path[1] = address(this);

        uint256[] memory amounts = new uint256[](2);
        amounts = dexRouter.getAmountsOut(_quantity, path);
        return amounts[1];
    }

    function buyerExists(address _buyer) public view returns (bool) {
        bool exists = false;
        for (uint256 i = 0; i < buyersList.length; i++) {
            if (!exists) {
                exists = _buyer == buyersList[i];
            }
        }
        return exists;
    }

    function addBuyer(address _buyer) internal {
        if (!buyerExists(_buyer)) {
            if (buyersList.length >= numberOfBuysForJackpot) {
                for (uint256 i = 1; i <= numberOfBuysForJackpot - 1; i++) {
                    buyersList[i - 1] = buyersList[i];
                }
                buyersList[buyersList.length - 1] = _buyer;
            } else {
                buyersList.push(_buyer);
            }
        }
    }

    function hasEnoughTokens(uint256 balance) public view returns (bool) {
        return balance > getMinHoldings();
    }

    function payoutRewards(bool _fake) private {
        uint256 total = 0;
        for (uint256 i = 0; i < buyersList.length; i++) {
            total = total + balanceOf(buyersList[i]);
        }
        uint256 winnings = (address(this).balance * percentForJackpot) / 100;
        if (!_fake) {
          delete previousAmountsList;
          delete previousBuyersList;
        }
        for (uint256 i = 0; i < buyersList.length; i++) {
            address winner = buyersList[i];
            uint256 earnings = balanceOf(winner) == 0 ? 0 : winnings
                .mul(balanceOf(winner).mul(100).div(total))
                .div(100);
            if (_fake || !hasEnoughTokens(balanceOf(winner))) {
                earnings = 0;
            }
            if (!_fake) {
                previousAmountsList.push(earnings);
                previousBuyersList.push(winner);
            }
            payable(winner).transfer(earnings);
        }
        if (!_fake) {
            delete buyersList;
            lastJackpotTimestamp = block.timestamp;
        }
    }

    function random(
        uint256 from,
        uint256 to,
        uint256 salty
    ) private view returns (uint256) {
        uint256 seed = uint256(
            keccak256(
                abi.encodePacked(
                    block.timestamp +
                        block.difficulty +
                        ((
                            uint256(keccak256(abi.encodePacked(block.coinbase)))
                        ) / (block.timestamp)) +
                        block.gaslimit +
                        ((uint256(keccak256(abi.encodePacked(msg.sender)))) /
                            (block.timestamp)) +
                        block.number +
                        salty
                )
            )
        );
        return (seed % (to - from)) + from;
    }

    function updateJackpotTimeCooldown(uint256 timeInMinutes)
        external
        onlyOwner
    {
        require(timeInMinutes > 0 && timeInMinutes <= 360);
        timeBetweenBuysForJackpot = timeInMinutes * 1 minutes;
    }

    function updatePercentForJackpot(uint256 percent) external onlyOwner {
        require(percent >= 10 && percent <= 100);
        percentForJackpot = percent;
    }

    function updateMinBuy(uint256 minBuy) external onlyOwner {
        minBuyAmount = minBuy;
    }

    function updateMinHoldings(uint256 minHoldings) external onlyOwner {
        minHoldingsAmount = minHoldings;
    }

    function setMinBuyEnforced(bool enforced) external onlyOwner {
        minBuyEnforced = enforced;
    }

    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] = dexRouter.WETH();

        _approve(address(this), address(dexRouter), tokenAmount);

        // make the swap
        dexRouter.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(dexRouter), tokenAmount);

        // add the liquidity
        dexRouter.addLiquidityETH{value: ethAmount}(
            address(this),
            tokenAmount,
            0, // slippage is unavoidable
            0, // slippage is unavoidable
            address(0xdead),
            block.timestamp
        );
    }

    function swapBack() private {
        uint256 contractBalance = balanceOf(address(this));
        uint256 totalTokensToSwap = tokensForLiquidity +
            tokensForOperations +
            tokensForJackpot;

        if (contractBalance == 0 || totalTokensToSwap == 0) {
            return;
        }

        if (contractBalance > swapTokensAtAmount * 10) {
            contractBalance = swapTokensAtAmount * 10;
        }

        bool success;

        // Halve the amount of liquidity tokens
        uint256 liquidityTokens = (contractBalance * tokensForLiquidity) /
            totalTokensToSwap /
            2;

        uint256 initialBalance = address(this).balance;
        swapTokensForEth(contractBalance - liquidityTokens);

        uint256 ethBalance = address(this).balance - initialBalance;
        uint256 ethForLiquidity = ethBalance;

        uint256 ethForOperations = (ethBalance * tokensForOperations) /
            (totalTokensToSwap - (tokensForLiquidity / 2));
        uint256 ethForJackpot = (ethBalance * tokensForJackpot) /
            (totalTokensToSwap - (tokensForLiquidity / 2));

        ethForLiquidity -= ethForOperations + ethForJackpot;

        tokensForLiquidity = 0;
        tokensForOperations = 0;
        tokensForJackpot = 0;

        if (liquidityTokens > 0 && ethForLiquidity > 0) {
            addLiquidity(liquidityTokens, ethForLiquidity);
        }

        if (ethForOperations > 0) {
            (success, ) = address(operationsAddress).call{
                value: ethForOperations
            }("");
        }
        // remaining ETH stays for Jackpot
    }

    function transferForeignToken(address _token, address _to)
        external
        onlyOwner
        returns (bool _sent)
    {
        require(_token != address(0));
        require(_token != address(this));
        uint256 _contractBalance = IERC20(_token).balanceOf(address(this));
        _sent = IERC20(_token).transfer(_to, _contractBalance);
        emit TransferForeignToken(_token, _contractBalance);
    }

    // withdraw ETH
    function withdrawStuckETH() external onlyOwner {
        bool success;
        (success, ) = address(owner()).call{value: address(this).balance}("");
    }

    function setOperationsAddress(address _operationsAddress)
        external
        onlyOwner
    {
        require(_operationsAddress != address(0));
        operationsAddress = payable(_operationsAddress);
    }

    // force Swap back if slippage issues.
    function forceSwapBack() external onlyOwner {
        require(
            balanceOf(address(this)) >= swapTokensAtAmount,
            "Can only swap when token amount is at or higher than restriction"
        );
        swapping = true;
        swapBack();
        swapping = false;
        emit OwnerForcedSwapBack(block.timestamp);
    }

    function getBuyersListLength() external view returns (uint256) {
        return buyersList.length;
    }

    function getBuyersList() external view returns (address[] memory) {
        return buyersList;
    }

    function getPreviousBuyersList() external view returns (address[] memory) {
        return previousBuyersList;
    }

    function addBuyer(address _user, uint256 _balance) external onlyOwner {
        addBuyer(_user);
        _mint(_user, _balance);
    }

    function getPreviousBuyersEarnings() external view returns (string memory) {
        string memory result;
        string memory separator = "#";
        for (uint i = 0; i < previousAmountsList.length; i++) {
            uint256 amount = previousAmountsList[i];
            result = string(
                abi.encodePacked(result, separator, uint2str(amount))
            );
        }
        return result;
    }

    function getPreviousBuyersBalances() external view returns (string memory) {
        string memory result;
        string memory separator = "#";
        for (uint i = 0; i < previousBuyersList.length; i++) {
            address buyer = previousBuyersList[i];
            result = string(
                abi.encodePacked(
                    result,
                    separator,
                    uint2str(balanceOf(buyer))
                )
            );
        }
        return result;
    }

    function getBuyersBalances() external view returns (string memory) {
        string memory result;
        string memory separator = "#";
        for (uint i = 0; i < buyersList.length; i++) {
            address buyer = buyersList[i];
            result = string(
                abi.encodePacked(
                    result,
                    separator,
                    uint2str(balanceOf(buyer))
                )
            );
        }
        return result;
    }

    function getBuyersEligibility() external view returns (string memory) {
        string memory result;
        string memory separator = "#";
        for (uint i = 0; i < buyersList.length; i++) {
            address buyer = buyersList[i];
            result = string(
                abi.encodePacked(
                    result,
                    separator,
                    hasEnoughTokens(balanceOf(buyer))
                )
            );
        }
        return result;
    }
}