Contract Source Code:

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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 Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 amount) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (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;
    }

    function _contextSuffixLength() internal view virtual returns (uint256) {
        return 0;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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;
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

interface ITaxContract {
    function distribute(uint amount) external;
    function gather(uint amount) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface IUniswapV2Factory {
    event PairCreated(
        address indexed token0,
        address indexed token1,
        address pair,
        uint
    );

    function feeTo() external view returns (address);

    function feeToSetter() external view returns (address);

    function getPair(address tokenA, address tokenB)
        external
        view
        returns (address pair);

    function allPairs(uint) external view returns (address pair);

    function allPairsLength() external view returns (uint);

    function createPair(address tokenA, address tokenB)
        external
        returns (address pair);

    function setFeeTo(address) external;

    function setFeeToSetter(address) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface IUniswapV2Router02 {
    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint amountADesired,
        uint amountBDesired,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    )
        external
        returns (
            uint amountA,
            uint amountB,
            uint liquidity
        );

    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    )
        external
        payable
        returns (
            uint amountToken,
            uint amountETH,
            uint liquidity
        );

    function removeLiquidityETH(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountToken, uint amountETH);

    function removeLiquidityETHSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountETH);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;

    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable;

    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
}

// SPDX-License-Identifier: MIT
pragma solidity =0.8.24;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";

import "./interfaces/IUniswapV2Factory.sol";
import "./interfaces/IUniswapV2Router02.sol";
import "./interfaces/ITaxContract.sol";
import "./RandomnessProvider.sol";

/*        

Lucky or Rekt ($YOLO)

*/

contract LuckyOrRekt is Context, IERC20, Ownable {
    using Address for address payable;
    using SafeMath for uint;

    mapping(address => uint) private _balances;
    mapping(address => mapping(address => uint)) private _allowances;

    mapping(address => bool) private _isExcludedFromFee;

    address payable public taxContractAddress;
    RandomnessProvider public randomnessProvider;

    uint private _buyTax = 30;
    uint private _sellTax = 30;
    uint private _preventSwapBefore = 30;

    // Lucky or Rekt Configuration Parameters
    uint public lossChance = 60; // 60% chance of loss (rekt)
    uint public winChance = 40; // 40% chance of win (lucky)

    // Range configuration struct
    struct Range {
        uint percent; // Percentage of this range within the scenario
        uint multiplier; // Penalty percentage (for loss) or bonus percentage (for win)
    }

    // Loss (Rekt) Configuration - 5 ranges
    Range[5] public lossRanges;

    // Win (Lucky) Configuration - 5 ranges
    Range[5] public winRanges;

    // Burn configuration for losses
    uint public burnPercentageOnLoss = 30; // 30% of penalty tokens are burned, rest to tax contract

    // Minimum balance protection (percentage of bought amount that must remain)
    uint public minBalancePercentage = 50; // 50% of bought amount must remain

    // Maximum bonus cap (percentage of total supply that can be minted as bonus)
    uint public maxBonusPercentage = 10; // 10% of total supply max per bonus

    uint8 private constant _decimals = 8;
    uint private _totalSupply = 1_000_000_000 * 10 ** _decimals;
    string private constant _name = unicode"Lucky or Rekt";
    string private constant _symbol = unicode"YOLO";

    uint public _maxTxAmount = (_totalSupply * 135) / 10000; // 1.35%
    uint public _maxWalletSize = (_totalSupply * 135) / 10000; // 1.35%
    uint public _swapThreshold = _totalSupply / 1000;

    IUniswapV2Router02 private uniswapV2Router;
    address private uniswapV2Pair;
    address public routerAddress;

    bool private tradingOpen;
    uint public launchBlock;

    bool private inSwap = false;
    bool private swapEnabled = false;
    bool private inLuckyOrRekt = false; // Reentrancy protection for Lucky or Rekt

    // Emergency controls - starts disabled by default
    bool public luckyOrRektPaused = true;

    address public lastBuyer;
    uint public lastBoughtAmount;

    // Track minimum balance required for pending lucky or rekt effects
    mapping(address => uint) public pendingMinBalance;

    // Track total tokens burned and minted from Lucky or Rekt effects
    uint public totalBurned = 0; // Total tokens burned from Rekt effects
    uint public totalMinted = 0; // Total tokens minted from Lucky effects

    event MaxTxAmountUpdated(uint _maxTxAmount);
    event LuckyOrRekted(
        address indexed buyer,
        uint boughtAmount,
        int256 percentageModifier,
        uint modifiedAmount,
        bool isLucky
    );
    event TaxContractCallFailed(address indexed buyer, uint amount);

    modifier lockTheSwap() {
        inSwap = true;
        _;
        inSwap = false;
    }

    constructor(address _taxContractAddress, address _randomnessProvider) {
        taxContractAddress = payable(_taxContractAddress);
        randomnessProvider = RandomnessProvider(_randomnessProvider);
        _balances[_msgSender()] = _totalSupply;

        // Set default router address for Ethereum Sepolia
        // Update this for different networks:
        // BASE: 0x4752ba5DBc23f44D87826276BF6Fd6b1C372aD24
        // ETHEREUM MAINNET: 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
        routerAddress = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;

        _isExcludedFromFee[_msgSender()] = true;
        _isExcludedFromFee[address(this)] = true;
        _isExcludedFromFee[_taxContractAddress] = true;

        // Initialize loss ranges with default values (more likely to lose big)
        lossRanges[0] = Range(10, 5); // 10% chance, -5% penalty (small loss, rare)
        lossRanges[1] = Range(20, 15); // 20% chance, -15% penalty
        lossRanges[2] = Range(30, 25); // 30% chance, -25% penalty
        lossRanges[3] = Range(25, 35); // 25% chance, -35% penalty
        lossRanges[4] = Range(15, 50); // 15% chance, -50% penalty (big loss, more common)

        // Initialize win ranges with default values (less likely to win big)
        winRanges[0] = Range(40, 5); // 40% chance, +5% bonus (small win, common)
        winRanges[1] = Range(30, 10); // 30% chance, +10% bonus
        winRanges[2] = Range(20, 20); // 20% chance, +20% bonus
        winRanges[3] = Range(8, 50); // 8% chance, +50% bonus (rare)
        winRanges[4] = Range(2, 100); // 2% chance, +100% bonus (very rare jackpot)

        // Validate that ranges add up to 100%
        uint totalLossPercent = 0;
        uint totalWinPercent = 0;
        for (uint i = 0; i < 5; i++) {
            totalLossPercent += lossRanges[i].percent;
            totalWinPercent += winRanges[i].percent;
        }
        require(totalLossPercent == 100, "Loss ranges must add up to 100%");
        require(totalWinPercent == 100, "Win ranges must add up to 100%");

        emit Transfer(address(0), _msgSender(), _totalSupply);
    }

    function name() public pure returns (string memory) {
        return _name;
    }

    function symbol() public pure returns (string memory) {
        return _symbol;
    }

    function decimals() public pure returns (uint8) {
        return _decimals;
    }

    function totalSupply() public view override returns (uint) {
        return _totalSupply;
    }

    function balanceOf(address account) public view override returns (uint) {
        return _balances[account];
    }

    function transfer(
        address recipient,
        uint amount
    ) public override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    function allowance(
        address owner,
        address spender
    ) public view override returns (uint) {
        return _allowances[owner][spender];
    }

    function approve(
        address spender,
        uint amount
    ) public override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    function transferFrom(
        address sender,
        address recipient,
        uint amount
    ) public override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(
            sender,
            _msgSender(),
            _allowances[sender][_msgSender()].sub(
                amount,
                "ERC20: transfer amount exceeds allowance"
            )
        );
        return true;
    }

    function _approve(address owner, address spender, uint amount) private {
        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);
    }

    function _transfer(address from, address to, uint amount) private {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        require(amount > 0, "Transfer amount must be greater than zero");

        // Determine if current transaction is a buy to check against lastBuyer
        // Note: This detection works for Uniswap V2 direct swaps, may need adjustment for V3 or aggregators
        address currentBuyer;
        bool isSell = (to == uniswapV2Pair && from != address(this));

        // Improved buy detection with additional safety checks
        if (
            from == uniswapV2Pair &&
            to != address(uniswapV2Router) &&
            to != address(this) &&
            to != uniswapV2Pair &&
            to != taxContractAddress &&
            !Address.isContract(to) &&
            to != address(0) // Additional safety check
        ) {
            // this is a buy - from pair to EOA (not router or other contract)
            currentBuyer = to;
        }

        // Check if sender has pending lucky or rekt effect and prevent draining below minimum
        // Exception: Allow sells - they will clear the pending status
        if (
            pendingMinBalance[from] > 0 && !_isExcludedFromFee[from] && !isSell
        ) {
            uint balanceAfterTransfer = _balances[from].sub(amount);
            require(
                balanceAfterTransfer >= pendingMinBalance[from],
                "Cannot transfer below minimum balance while pending lucky or rekt effect"
            );
        }

        // If user is selling and has pending status, clear them as lastBuyer
        if (isSell && pendingMinBalance[from] > 0) {
            if (lastBuyer == from) {
                lastBuyer = address(0);
                lastBoughtAmount = 0;
            }
            pendingMinBalance[from] = 0;
        }

        // Apply Lucky or Rekt to previous buyer (if exists) on EVERY transaction
        // But prevent users from triggering their own effect via sells (transfers are allowed)
        if (
            lastBuyer != address(0) &&
            lastBoughtAmount > 0 &&
            lastBuyer != address(this) &&
            lastBuyer != address(uniswapV2Router) &&
            lastBuyer != address(uniswapV2Pair) &&
            lastBuyer != address(taxContractAddress) &&
            !Address.isContract(lastBuyer) &&
            !(isSell && lastBuyer == from) &&
            !inLuckyOrRekt // Reentrancy protection
        ) {
            // Store the values before clearing to ensure randomness provider gets correct data
            address buyerToProcess = lastBuyer;
            uint amountToProcess = lastBoughtAmount;

            // Clear the lastBuyer immediately to prevent reentrancy issues
            lastBuyer = address(0);
            lastBoughtAmount = 0;

            // Process lucky/rekt with internal error handling using stored values
            bool success = _processLuckyOrRektInternal(
                buyerToProcess,
                amountToProcess,
                from, // Current transaction sender
                amount // Current transaction amount
            );
            if (!success) {
                // Failed - emit event but don't revert transaction
                emit TaxContractCallFailed(buyerToProcess, amountToProcess);
            }
        }

        uint taxAmount;

        if (!_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {
            // Only apply tax on buys and sells, not normal transfers
            if (currentBuyer != address(0)) {
                // This is a buy transaction
                if (!_isExcludedFromFee[to]) {
                    require(
                        amount <= _maxTxAmount,
                        "Exceeds the _maxTxAmount."
                    );
                    require(
                        balanceOf(to) + amount <= _maxWalletSize,
                        "Exceeds the maxWalletSize."
                    );
                }

                taxAmount = amount.mul(_buyTax).div(100);
            } else if (to == uniswapV2Pair && from != address(this)) {
                // This is a sell transaction
                require(amount <= _maxTxAmount, "Exceeds the _maxTxAmount.");
                taxAmount = amount.mul(_sellTax).div(100);
            }
            // Normal transfers between users have no tax (taxAmount remains 0)

            // Auto-swap logic for sells only
            if (to == uniswapV2Pair && from != address(this)) {
                uint contractTokenBalance = balanceOf(address(this));
                if (
                    !inSwap &&
                    swapEnabled &&
                    contractTokenBalance > _swapThreshold &&
                    block.number > launchBlock + _preventSwapBefore
                ) {
                    swapTokensForEth(
                        min(amount, min(contractTokenBalance, _swapThreshold))
                    );
                    uint contractETHBalance = address(this).balance;
                    if (contractETHBalance > 0) {
                        sendETHToTaxContract(contractETHBalance);
                        ITaxContract(taxContractAddress).distribute(
                            contractETHBalance
                        );
                    }
                }
            }
        }

        if (taxAmount > 0) {
            _balances[address(this)] = _balances[address(this)].add(taxAmount);
            emit Transfer(from, address(this), taxAmount);
        }

        _balances[from] = _balances[from].sub(amount);
        _balances[to] = _balances[to].add(amount.sub(taxAmount));

        // Set new buyer for next transaction (if this is a buy)
        if (
            currentBuyer != address(0) &&
            currentBuyer != address(this) &&
            currentBuyer != address(uniswapV2Router) &&
            currentBuyer != address(uniswapV2Pair) &&
            currentBuyer != address(taxContractAddress) &&
            !Address.isContract(currentBuyer)
        ) {
            uint boughtAmount = amount.sub(taxAmount);
            if (boughtAmount > 0) {
                // Clear previous buyer's minimum balance requirement if they're buying again
                if (pendingMinBalance[currentBuyer] > 0) {
                    pendingMinBalance[currentBuyer] = 0;
                }

                lastBuyer = currentBuyer;
                lastBoughtAmount = boughtAmount;

                // Set minimum balance requirement (configurable percentage of bought amount)
                pendingMinBalance[currentBuyer] = boughtAmount
                    .mul(minBalancePercentage)
                    .div(100);
            }
        }

        emit Transfer(from, to, amount.sub(taxAmount));
    }

    function min(uint a, uint b) private pure returns (uint) {
        return (a > b) ? b : a;
    }

    /**
     * @dev Determines lucky or rekt outcome for a buyer
     * @param buyer The address of the buyer (previous buyer being processed)
     * @param amount The amount being bought (previous buyer's amount)
     * @param currentSender Current transaction sender (for additional entropy)
     * @param currentAmount Current transaction amount (for additional entropy)
     * @return percentageModifier The percentage modifier (positive for bonus, negative for penalty)
     * @return isLucky True if the outcome is lucky (bonus), false if rekt (penalty)
     */
    function luckyOrRekt(
        address buyer,
        uint amount,
        address currentSender,
        uint currentAmount
    ) private returns (int256 percentageModifier, bool isLucky) {
        // Safety checks to prevent division by zero
        require(
            lossChance > 0 && winChance > 0,
            "Invalid chance configuration"
        );
        require(lossChance + winChance == 100, "Chances must equal 100");

        // Get random number from external provider (0-99)
        // Pass current transaction info (msg.sender, current amount) for additional entropy
        // while processing the effect for the previous buyer
        uint256 randomNum = randomnessProvider.requestRandomness(
            buyer, // Previous buyer being processed
            amount, // Previous buyer's amount
            currentSender, // Current transaction sender (for additional entropy)
            currentAmount // Current transaction amount (for additional entropy)
        );

        // Determine win/loss based on configured split
        if (randomNum < lossChance) {
            // REKT - Apply penalty
            isLucky = false;

            // Map randomNum (0 to lossChance-1) to loss ranges with proper scaling
            // Ensure full 0-99 coverage for range positions
            uint256 lossPosition = (randomNum * 100) / lossChance;
            // Cap at 99 to ensure we don't exceed range bounds
            if (lossPosition >= 100) lossPosition = 99;

            // Calculate cumulative range boundaries
            uint256 range1End = lossRanges[0].percent;
            uint256 range2End = range1End + lossRanges[1].percent;
            uint256 range3End = range2End + lossRanges[2].percent;
            uint256 range4End = range3End + lossRanges[3].percent;

            if (lossPosition < range1End) {
                percentageModifier = -int256(lossRanges[0].multiplier);
            } else if (lossPosition < range2End) {
                percentageModifier = -int256(lossRanges[1].multiplier);
            } else if (lossPosition < range3End) {
                percentageModifier = -int256(lossRanges[2].multiplier);
            } else if (lossPosition < range4End) {
                percentageModifier = -int256(lossRanges[3].multiplier);
            } else {
                percentageModifier = -int256(lossRanges[4].multiplier);
            }
        } else {
            // LUCKY - Apply bonus
            isLucky = true;

            // Map randomNum (lossChance to 99) to win ranges with proper scaling
            // Ensure full 0-99 coverage for range positions
            uint256 winPosition = ((randomNum - lossChance) * 100) / winChance;
            // Cap at 99 to ensure we don't exceed range bounds
            if (winPosition >= 100) winPosition = 99;

            // Calculate cumulative range boundaries
            uint256 range1End = winRanges[0].percent;
            uint256 range2End = range1End + winRanges[1].percent;
            uint256 range3End = range2End + winRanges[2].percent;
            uint256 range4End = range3End + winRanges[3].percent;

            if (winPosition < range1End) {
                percentageModifier = int256(winRanges[0].multiplier);
            } else if (winPosition < range2End) {
                percentageModifier = int256(winRanges[1].multiplier);
            } else if (winPosition < range3End) {
                percentageModifier = int256(winRanges[2].multiplier);
            } else if (winPosition < range4End) {
                percentageModifier = int256(winRanges[3].multiplier);
            } else {
                percentageModifier = int256(winRanges[4].multiplier);
            }
        }

        return (percentageModifier, isLucky);
    }

    function swapTokensForEth(uint tokenAmount) private lockTheSwap {
        if (tokenAmount == 0) return;
        if (!tradingOpen) return;
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = uniswapV2Router.WETH();

        _approve(address(this), address(uniswapV2Router), tokenAmount);

        uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0,
            path,
            address(this),
            block.timestamp
        );
    }

    function removeLimits() external onlyOwner {
        _maxTxAmount = type(uint256).max;
        _maxWalletSize = type(uint256).max;
        emit MaxTxAmountUpdated(type(uint256).max);
    }

    function sendETHToTaxContract(uint amount) private {
        Address.sendValue(taxContractAddress, amount);
    }

    function openTrading() external onlyOwner {
        require(!tradingOpen, "Trading is already open");
        require(balanceOf(address(this)) > 0, "No token balance");
        require(address(this).balance > 0, "No eth balance");
        require(routerAddress != address(0), "Router address not set");

        uniswapV2Router = IUniswapV2Router02(routerAddress);
        _approve(address(this), address(uniswapV2Router), _totalSupply);

        uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(
            address(this),
            uniswapV2Router.WETH()
        );

        uniswapV2Router.addLiquidityETH{value: address(this).balance}(
            address(this),
            balanceOf(address(this)),
            0,
            0,
            owner(),
            block.timestamp
        );
        IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);

        swapEnabled = true;
        tradingOpen = true;
        launchBlock = block.number;
    }

    function manualSwap(uint amount) external onlyOwner {
        uint tokenBalance = balanceOf(address(this));
        require(amount <= tokenBalance, "!amount");

        if (amount > 0) {
            swapTokensForEth(amount);
        }

        uint ethBalance = address(this).balance;
        if (ethBalance > 0) {
            sendETHToTaxContract(ethBalance);
            ITaxContract(taxContractAddress).distribute(ethBalance);
        }
    }

    function setExcluded(address account, bool isExcluded) external onlyOwner {
        _isExcludedFromFee[account] = isExcluded;
    }

    function setTaxContract(address _taxContractAddress) external onlyOwner {
        taxContractAddress = payable(_taxContractAddress);
    }

    function setTaxes(uint _buyTaxRate, uint _sellTaxRate) external onlyOwner {
        require(_buyTaxRate <= 30, "Buy tax cannot exceed 30%");
        require(_sellTaxRate <= 30, "Sell tax cannot exceed 30%");
        _buyTax = _buyTaxRate;
        _sellTax = _sellTaxRate;
    }

    function getBuyTax() external view returns (uint) {
        return _buyTax;
    }

    function getSellTax() external view returns (uint) {
        return _sellTax;
    }

    function setRouterAddress(address _routerAddress) external onlyOwner {
        require(!tradingOpen, "Cannot change router after trading opens");
        require(_routerAddress != address(0), "Router address cannot be zero");
        routerAddress = _routerAddress;
    }

    function rescueETH() external onlyOwner {
        payable(_msgSender()).transfer(address(this).balance);
    }

    function rescueTokens(address _token) external onlyOwner {
        require(_token != address(this), "Can not rescue own token!");
        IERC20(_token).transfer(
            _msgSender(),
            IERC20(_token).balanceOf(address(this))
        );
    }

    // Lucky or Rekt Configuration Functions
    function setLuckyOrRektChances(
        uint _lossChance,
        uint _winChance
    ) external onlyOwner {
        require(_lossChance + _winChance == 100, "Chances must add up to 100");
        lossChance = _lossChance;
        winChance = _winChance;
    }

    function setLossRange(
        uint rangeNumber,
        uint rangePercent,
        uint penaltyPercent
    ) external onlyOwner {
        require(rangeNumber >= 1 && rangeNumber <= 5, "Invalid range number");
        require(penaltyPercent <= 100, "Penalty cannot exceed 100%");

        lossRanges[rangeNumber - 1] = Range(rangePercent, penaltyPercent);

        // Validate that all loss ranges add up to 100%
        uint totalPercent = 0;
        for (uint i = 0; i < 5; i++) {
            totalPercent += lossRanges[i].percent;
        }
        require(totalPercent == 100, "Loss ranges must add up to 100%");
    }

    function setWinRange(
        uint rangeNumber,
        uint rangePercent,
        uint bonusPercent
    ) external onlyOwner {
        require(rangeNumber >= 1 && rangeNumber <= 5, "Invalid range number");
        require(bonusPercent <= 1000, "Bonus cannot exceed 1000%"); // Allow up to 10x bonus

        winRanges[rangeNumber - 1] = Range(rangePercent, bonusPercent);

        // Validate that all win ranges add up to 100%
        uint totalPercent = 0;
        for (uint i = 0; i < 5; i++) {
            totalPercent += winRanges[i].percent;
        }
        require(totalPercent == 100, "Win ranges must add up to 100%");
    }

    function setBurnPercentage(uint _burnPercentage) external onlyOwner {
        require(_burnPercentage <= 100, "Burn percentage cannot exceed 100%");
        burnPercentageOnLoss = _burnPercentage;
    }

    function setMinBalancePercentage(
        uint _minBalancePercentage
    ) external onlyOwner {
        require(
            _minBalancePercentage <= 100,
            "Min balance percentage cannot exceed 100%"
        );
        minBalancePercentage = _minBalancePercentage;
    }

    function setMaxBonusPercentage(
        uint _maxBonusPercentage
    ) external onlyOwner {
        require(
            _maxBonusPercentage <= 50,
            "Max bonus percentage cannot exceed 50% of supply"
        );
        maxBonusPercentage = _maxBonusPercentage;
    }

    // View functions for lucky or rekt status
    function getPendingMinBalance(address user) external view returns (uint) {
        return pendingMinBalance[user];
    }

    function isUserPendingLuckyOrRekt(
        address user
    ) external view returns (bool) {
        return pendingMinBalance[user] > 0;
    }

    // Getter functions for ranges
    function getLossRange(
        uint index
    ) external view returns (uint percent, uint multiplier) {
        require(index < 5, "Invalid range index");
        return (lossRanges[index].percent, lossRanges[index].multiplier);
    }

    function getWinRange(
        uint index
    ) external view returns (uint percent, uint multiplier) {
        require(index < 5, "Invalid range index");
        return (winRanges[index].percent, winRanges[index].multiplier);
    }

    function getAllLossRanges() external view returns (Range[5] memory) {
        return lossRanges;
    }

    function getAllWinRanges() external view returns (Range[5] memory) {
        return winRanges;
    }

    // Analytics functions for Lucky or Rekt effects
    function getTotalBurned() external view returns (uint) {
        return totalBurned;
    }

    function getTotalMinted() external view returns (uint) {
        return totalMinted;
    }

    function getNetSupplyChange() external view returns (int256) {
        return int256(totalMinted) - int256(totalBurned);
    }

    function getBurnMintRatio() external view returns (uint256) {
        if (totalMinted == 0) return 0;
        return (totalBurned * 100) / totalMinted; // Returns percentage (burned/minted * 100)
    }

    receive() external payable {}

    /**
     * @dev Internal function to process lucky or rekt logic for a buyer
     * Returns true on success, false on failure (to prevent transaction revert)
     */
    function _processLuckyOrRektInternal(
        address buyer,
        uint boughtAmount,
        address from, // Current transaction sender
        uint amount // Current transaction amount
    ) private returns (bool) {
        require(!inLuckyOrRekt, "Already processing lucky or rekt");

        // Check if lucky or rekt system is paused
        if (luckyOrRektPaused) {
            return true; // Skip processing but don't fail the transaction
        }

        inLuckyOrRekt = true; // Set reentrancy lock

        try this._executeLuckyOrRekt(buyer, boughtAmount, from, amount) {
            inLuckyOrRekt = false; // Release reentrancy lock
            return true;
        } catch {
            inLuckyOrRekt = false; // Release reentrancy lock
            return false;
        }
    }

    /**
     * @dev External function to execute lucky or rekt logic (for try-catch)
     */
    function _executeLuckyOrRekt(
        address buyer,
        uint boughtAmount,
        address from,
        uint amount
    ) external {
        require(msg.sender == address(this), "Only self-call allowed");

        // Apply lucky or rekt logic to the buyer
        (int256 percentageModifier, bool isLucky) = luckyOrRekt(
            buyer,
            boughtAmount,
            from, // Current transaction sender for additional entropy
            amount // Current transaction amount for additional entropy
        );

        if (percentageModifier != 0) {
            uint modificationAmount = boughtAmount
                .mul(
                    uint256(
                        percentageModifier > 0
                            ? percentageModifier
                            : -percentageModifier
                    )
                )
                .div(100);

            if (isLucky) {
                // LUCKY - Mint new tokens as bonus (with safety cap)
                if (modificationAmount > 0) {
                    // Cap bonus to prevent massive supply inflation (max configurable % of current supply)
                    uint maxBonus = _totalSupply.mul(maxBonusPercentage).div(
                        100
                    );
                    if (modificationAmount > maxBonus) {
                        modificationAmount = maxBonus;
                    }

                    _totalSupply = _totalSupply.add(modificationAmount);
                    _balances[buyer] = _balances[buyer].add(modificationAmount);
                    totalMinted = totalMinted.add(modificationAmount); // Track total minted
                    emit Transfer(address(0), buyer, modificationAmount);
                }
            } else {
                // REKT - Apply penalty by burning some tokens and sending rest to tax contract
                if (modificationAmount > 0) {
                    uint availableBalance = _balances[buyer];
                    uint minBalance = pendingMinBalance[buyer];

                    // Calculate maximum penalty that can be applied without going below minimum balance
                    uint maxPenalty = availableBalance > minBalance
                        ? availableBalance - minBalance
                        : 0;
                    uint actualPenalty = modificationAmount <= maxPenalty
                        ? modificationAmount
                        : maxPenalty;

                    if (actualPenalty > 0) {
                        // Calculate burn amount and tax contract amount based on actual penalty
                        uint burnAmount = actualPenalty
                            .mul(burnPercentageOnLoss)
                            .div(100);
                        uint taxContractAmount = actualPenalty.sub(burnAmount);

                        // Remove penalty tokens from buyer
                        _balances[buyer] = _balances[buyer].sub(actualPenalty);

                        // Burn tokens (decrease total supply)
                        if (burnAmount > 0) {
                            _totalSupply = _totalSupply.sub(burnAmount);
                            totalBurned = totalBurned.add(burnAmount); // Track total burned
                            emit Transfer(buyer, address(0), burnAmount);
                        }

                        // Transfer remaining penalty to tax contract
                        if (taxContractAmount > 0) {
                            _balances[taxContractAddress] = _balances[
                                taxContractAddress
                            ].add(taxContractAmount);
                            emit Transfer(
                                buyer,
                                taxContractAddress,
                                taxContractAmount
                            );

                            // Safe external call - will revert if it fails
                            ITaxContract(taxContractAddress).gather(
                                taxContractAmount
                            );
                        }

                        // Update modification amount for event emission
                        modificationAmount = actualPenalty;
                    }
                }
            }

            emit LuckyOrRekted(
                buyer,
                boughtAmount,
                percentageModifier,
                modificationAmount,
                isLucky
            );
        }

        // Clear the pending minimum balance requirement for the processed buyer
        if (pendingMinBalance[buyer] > 0) {
            pendingMinBalance[buyer] = 0;
        }
    }

    function setRandomnessProvider(
        address _randomnessProvider
    ) external onlyOwner {
        randomnessProvider = RandomnessProvider(_randomnessProvider);
    }

    function enableLuckyOrRekt() external onlyOwner {
        luckyOrRektPaused = false;
    }

    function disableLuckyOrRekt() external onlyOwner {
        luckyOrRektPaused = true;
    }

    function isLuckyOrRektEnabled() external view returns (bool) {
        return !luckyOrRektPaused;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity =0.8.24;

import "@openzeppelin/contracts/access/Ownable.sol";

/**
 * @title RandomnessProvider
 * @dev Enhanced pseudo-random number generator with multiple entropy sources
 * Designed to be unpredictable while remaining synchronous
 */
contract RandomnessProvider is Ownable {
    // Historical entropy accumulation
    bytes32 private entropyPool;
    uint256 private entropyNonce;
    uint256 private lastBlockUsed;

    // Historical block hashes for additional entropy
    mapping(uint256 => bytes32) private historicalHashes;
    uint256 private hashHistorySize = 10;
    uint256 private currentHashIndex;

    // Request tracking for additional entropy
    mapping(address => uint256) private requestCounts;
    uint256 private totalRequests;

    // Gas accumulation for entropy
    uint256 private accumulatedGasUsed;

    // Events
    event EntropyUpdated(bytes32 indexed newEntropy, uint256 blockNumber);
    event RandomnessRequested(
        address indexed requester,
        uint256 result,
        uint256 entropy
    );

    constructor() {
        // Initialize entropy pool with deployment data
        entropyPool = keccak256(
            abi.encodePacked(
                block.timestamp,
                block.prevrandao,
                block.number,
                msg.sender,
                address(this),
                block.coinbase
            )
        );

        lastBlockUsed = block.number;
        entropyNonce = 1;
    }

    /**
     * @dev Request enhanced pseudo-random number (0-99)
     * Uses multiple entropy sources for unpredictability
     */
    function requestRandomness(
        address buyer,
        uint256 amount,
        address lastBuyer,
        uint256 lastBoughtAmount
    ) external returns (uint256) {
        // Update entropy pool before generating randomness
        _updateEntropyPool();

        // Generate randomness with multiple entropy sources
        uint256 randomness = _generateEnhancedRandom(
            buyer,
            amount,
            lastBuyer,
            lastBoughtAmount
        );

        // Update request tracking
        requestCounts[tx.origin]++;
        totalRequests++;

        // Update accumulated gas for additional entropy
        accumulatedGasUsed += gasleft();

        emit RandomnessRequested(tx.origin, randomness, uint256(entropyPool));

        return randomness;
    }

    /**
     * @dev Generate enhanced pseudo-random number with multiple entropy sources
     */
    function _generateEnhancedRandom(
        address buyer,
        uint256 amount,
        address lastBuyer,
        uint256 lastBoughtAmount
    ) private returns (uint256) {
        // Increment nonce for each request
        entropyNonce++;

        // Gather multiple entropy sources
        bytes32 entropy1 = keccak256(
            abi.encodePacked(
                entropyPool,
                block.timestamp,
                block.prevrandao,
                block.number,
                entropyNonce
            )
        );

        bytes32 entropy2 = keccak256(
            abi.encodePacked(
                buyer,
                amount,
                lastBuyer,
                lastBoughtAmount,
                msg.sender,
                tx.origin
            )
        );

        bytes32 entropy3 = keccak256(
            abi.encodePacked(
                block.coinbase,
                block.gaslimit,
                accumulatedGasUsed,
                totalRequests,
                requestCounts[tx.origin]
            )
        );

        // Use historical block data if available
        bytes32 historicalEntropy = _getHistoricalEntropy();

        // Combine all entropy sources with multiple hash rounds
        bytes32 combinedEntropy = entropy1;
        for (uint i = 0; i < 3; i++) {
            combinedEntropy = keccak256(
                abi.encodePacked(
                    combinedEntropy,
                    entropy2,
                    entropy3,
                    historicalEntropy,
                    i
                )
            );
        }

        // Final randomness extraction with modular reduction
        uint256 randomValue = uint256(combinedEntropy);

        // Use multiple modular operations to avoid patterns
        randomValue =
            (randomValue ^ uint256(entropy2) ^ uint256(entropy3)) %
            100;

        // Store this round's entropy for future use
        _storeHistoricalHash(combinedEntropy);

        return randomValue;
    }

    /**
     * @dev Update the entropy pool with current block data
     */
    function _updateEntropyPool() private {
        if (block.number > lastBlockUsed) {
            entropyPool = keccak256(
                abi.encodePacked(
                    entropyPool,
                    blockhash(block.number - 1),
                    block.timestamp,
                    block.prevrandao,
                    block.number,
                    totalRequests
                )
            );

            lastBlockUsed = block.number;
            emit EntropyUpdated(entropyPool, block.number);
        }
    }

    /**
     * @dev Get historical entropy from stored block hashes
     */
    function _getHistoricalEntropy() private view returns (bytes32) {
        bytes32 historical = bytes32(0);

        // Combine several historical hashes if available
        for (uint i = 0; i < hashHistorySize && i < currentHashIndex; i++) {
            uint256 index = (currentHashIndex - 1 - i) % hashHistorySize;
            historical = keccak256(
                abi.encodePacked(historical, historicalHashes[index])
            );
        }

        return historical;
    }

    /**
     * @dev Store hash for historical entropy
     */
    function _storeHistoricalHash(bytes32 hash) private {
        historicalHashes[currentHashIndex % hashHistorySize] = hash;
        currentHashIndex++;
    }

    /**
     * @dev Admin function to add external entropy (e.g., from off-chain sources)
     */
    function addExternalEntropy(bytes32 externalEntropy) external onlyOwner {
        entropyPool = keccak256(
            abi.encodePacked(
                entropyPool,
                externalEntropy,
                block.timestamp,
                block.number
            )
        );

        emit EntropyUpdated(entropyPool, block.number);
    }

    /**
     * @dev Emergency function to reset entropy pool
     */
    function resetEntropyPool() external onlyOwner {
        entropyPool = keccak256(
            abi.encodePacked(
                block.timestamp,
                block.prevrandao,
                block.number,
                totalRequests,
                address(this).balance
            )
        );

        entropyNonce = 1;
        emit EntropyUpdated(entropyPool, block.number);
    }

    /**
     * @dev View function to check entropy pool state (for debugging)
     */
    function getEntropyInfo()
        external
        view
        returns (
            bytes32 currentEntropy,
            uint256 currentNonce,
            uint256 totalRequestCount,
            uint256 historySize
        )
    {
        return (entropyPool, entropyNonce, totalRequests, currentHashIndex);
    }

    /**
     * @dev Get user's request statistics
     */
    function getUserStats(
        address user
    ) external view returns (uint256 requestCount) {
        return requestCounts[user];
    }
}