// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
pragma abicoder v2;
/**
 * @author Brewlabs
 * This contract has been developed by brewlabs.info
 */
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "@chainlink/contracts/src/v0.8/interfaces/LinkTokenInterface.sol";
import "@chainlink/contracts/src/v0.8/interfaces/VRFCoordinatorV2Interface.sol";
import "@chainlink/contracts/src/v0.8/VRFConsumerBaseV2.sol";
import "../libs/IPriceOracle.sol";
interface IPegSwap {
    function swap(uint256 amount, address source, address target) external;
    function getSwappableAmount(address source, address target) external view returns (uint256);
}
contract LuckyRooAirdrop is ReentrancyGuard, VRFConsumerBaseV2, Ownable {
    using SafeERC20 for IERC20;
    VRFCoordinatorV2Interface COORDINATOR;
    LinkTokenInterface LINKTOKEN;
    bool public initialized = false;
    IERC20 public token;
    IPriceOracle private oracle;
    uint64 public s_subscriptionId;
    bytes32 keyHash;
    uint32 callbackGasLimit = 150000;
    uint16 requestConfirmations = 3;
    uint32 numWords = 3;
    uint256 public s_requestId;
    uint256 public r_requestId;
    uint256[] public s_randomWords;
    struct AirdropResult {
        address[3] winner;
        uint256[3] amount;
    }
    uint256 public currentID = 1;
    uint256 public distributeRate = 9500;
    uint256 public distributorLimit = 500 ether;
    uint256[3] public airdropRates = [6000, 2500, 1000];
    mapping(uint256 => AirdropResult) private results;
    uint256 public lastAirdropTime;
    struct DistributorInfo {
        uint256 amount;
        uint256 regAirdropID;
    }
    mapping(address => DistributorInfo) public userInfo;
    address[] public distributors;
    address public treasury = 0xE2123f0F85953414eb3B4Dfa97790ec8e0102D44;
    uint256 public performanceFee = 0.00052 ether;
    uint256 public totalStaked;
    // BSC Mainnet ERC20_LINK_ADDRESS
    address public constant ERC20_LINK_ADDRESS = 0xF8A0BF9cF54Bb92F17374d9e9A321E6a111a51bD;
    address public constant PEGSWAP_ADDRESS = 0x1FCc3B22955e76Ca48bF025f1A6993685975Bb9e;
    event AddDistributor(address user, uint256 amount);
    event Claim(address user, uint256 amount);
    event HolderDistributed(uint256 id, address[3] winners, uint256[3] amounts);
    event SetDistributorLimit(uint256 limit);
    event SetDistributorRates(uint256[3] rates);
    event ServiceInfoUpadted(address addr, uint256 fee);
    /**
     * @notice Constructor
     * @dev RandomNumberGenerator must be deployed prior to this contract
     */
    constructor(address _vrfCoordinator, address _link, bytes32 _keyHash) VRFConsumerBaseV2(_vrfCoordinator) {
        COORDINATOR = VRFCoordinatorV2Interface(_vrfCoordinator);
        s_subscriptionId = COORDINATOR.createSubscription();
        keyHash = _keyHash;
        COORDINATOR.addConsumer(s_subscriptionId, address(this));
        LINKTOKEN = LinkTokenInterface(_link);
    }
    /**
     * @notice Initialize the contract
     * @dev This function must be called by the owner of the contract.
     */
    function initialize(address _token, address _oracle) external onlyOwner {
        require(!initialized, "Contract already initialized");
        initialized = true;
        token = IERC20(_token);
        oracle = IPriceOracle(_oracle);
    }
    function addDistributor() external payable nonReentrant {
        require(initialized, "Contract not initialized");
        require(!isContract(msg.sender), "contract cannot be distributor");
        DistributorInfo storage user = userInfo[msg.sender];
        require(user.regAirdropID < currentID, "already added");
        require(user.amount == 0, "claim previous stake first");
        _transferPerformanceFee();
        uint256 tokenPrice = oracle.getTokenPrice(address(token));
        uint256 tokenBal = token.balanceOf(msg.sender);
        uint256 amount = distributorLimit * 1 ether / tokenPrice;
        require(tokenPrice > 0, "LUCKY ROO price is missing");
        require(tokenBal >= amount, "insufficient holder balance");
        uint256 beforeAmt = token.balanceOf(address(this));
        token.safeTransferFrom(msg.sender, address(this), amount);
        uint256 realAmt = token.balanceOf(address(this)) - beforeAmt;
        if (realAmt > amount) realAmt = amount;
        user.amount = realAmt;
        user.regAirdropID = currentID;
        distributors.push(msg.sender);
        totalStaked += user.amount;
        emit AddDistributor(msg.sender, realAmt);
    }
    function claim() external payable nonReentrant {
        DistributorInfo storage user = userInfo[msg.sender];
        require(user.amount > 0, "not registered");
        require(user.regAirdropID < currentID, "can claim after this round is finished");
        _transferPerformanceFee();
        token.safeTransfer(msg.sender, user.amount);
        emit Claim(msg.sender, user.amount);
        totalStaked -= user.amount;
        user.amount = 0;
    }
    function _transferPerformanceFee() internal {
        require(msg.value >= performanceFee, "should pay small gas to add as a distributor");
        payable(treasury).transfer(performanceFee);
        if (msg.value > performanceFee) {
            payable(msg.sender).transfer(msg.value - performanceFee);
        }
    }
    function numDistributors() external view returns (uint256) {
        return distributors.length;
    }
    /**
     * @notice Distribute the prizes to the three winners
     * @dev This function must be called by the owner of the contract.
     */
    function callAirdrop() external onlyOwner {
        require(initialized, "Contract not initialized");
        require(s_requestId == r_requestId, "Request IDs do not match");
        require(s_randomWords.length == numWords, "Number of words does not match");
        uint256 numHolders = distributors.length;
        require(numHolders > 3, "Not enough distributors");
        s_requestId = 0;
        uint256[3] memory idx;
        uint256[3] memory sortedIdx;
        for (uint256 i = 0; i < 3; i++) {
            idx[i] = s_randomWords[i] % (numHolders - i);
            for (uint256 j = 0; j < i; j++) {
                if (idx[i] >= sortedIdx[j]) {
                    idx[i] = idx[i] + 1;
                } else {
                    break;
                }
            }
            idx[i] = idx[i] % numHolders;
            sortedIdx[i] = idx[i];
            if (i > 0 && sortedIdx[i] < sortedIdx[i - 1]) {
                uint256 t = sortedIdx[i];
                sortedIdx[i] = sortedIdx[i - 1];
                sortedIdx[i - 1] = t;
            }
        }
        AirdropResult storage airdropResult = results[currentID];
        uint256 amount = address(this).balance;
        amount = amount * distributeRate / 10000;
        for (uint256 i = 0; i < 3; i++) {
            address winnerA = distributors[idx[i]];
            airdropResult.winner[i] = winnerA;
            uint256 amountA = amount * airdropRates[i] / 10000;
            airdropResult.amount[i] = amountA;
            payable(winnerA).transfer(amountA);
        }
        emit HolderDistributed(currentID, airdropResult.winner, airdropResult.amount);
        currentID = currentID + 1;
        lastAirdropTime = block.timestamp;
        distributors = new address[](0);
    }
    function getAirdropResult(uint256 _id) external view returns (address[3] memory, uint256[3] memory) {
        return (results[_id].winner, results[_id].amount);
    }
    /**
     * @notice Set the distribution rates for the three wallets
     * @dev This function must be called by the owner of the contract.
     */
    function setAirdropRates(uint256 _rateA, uint256 _rateB, uint256 _rateC) external onlyOwner {
        require(_rateA > 0, "Rate A must be greater than 0");
        require(_rateB > 0, "Rate B must be greater than 0");
        require(_rateC > 0, "Rate C must be greater than 0");
        require(_rateA + _rateB + _rateC < 10000, "Total rate must be less than 10000");
        airdropRates = [_rateA, _rateB, _rateC];
        emit SetDistributorRates(airdropRates);
    }
    /**
     * @notice Set the minimum holding tokens to add distributor in usd
     * @dev This function must be called by the owner of the contract.
     */
    function setDistributorBalanceLimit(uint256 _min) external onlyOwner {
        distributorLimit = _min * 1 ether;
        emit SetDistributorLimit(_min);
    }
    function setServiceInfo(address _treasury, uint256 _fee) external {
        require(msg.sender == treasury, "setServiceInfo: FORBIDDEN");
        require(_treasury != address(0x0), "Invalid address");
        treasury = _treasury;
        performanceFee = _fee;
        emit ServiceInfoUpadted(_treasury, _fee);
    }
    function setCoordiatorConfig(bytes32 _keyHash, uint32 _gasLimit, uint32 _numWords) external onlyOwner {
        keyHash = _keyHash;
        callbackGasLimit = _gasLimit;
        numWords = _numWords;
    }
    /**
     * @notice fetch subscription information from the VRF coordinator
     */
    function getSubscriptionInfo()
        external
        view
        returns (uint96 balance, uint64 reqCount, address owner, address[] memory consumers)
    {
        return COORDINATOR.getSubscription(s_subscriptionId);
    }
    /**
     * @notice cancle subscription from the VRF coordinator
     * @dev This function must be called by the owner of the contract.
     */
    function cancelSubscription() external onlyOwner {
        COORDINATOR.cancelSubscription(s_subscriptionId, msg.sender);
        s_subscriptionId = 0;
    }
    /**
     * @notice subscribe to the VRF coordinator
     * @dev This function must be called by the owner of the contract.
     */
    function startSubscription(address _vrfCoordinator) external onlyOwner {
        require(s_subscriptionId == 0, "Subscription already started");
        COORDINATOR = VRFCoordinatorV2Interface(_vrfCoordinator);
        s_subscriptionId = COORDINATOR.createSubscription();
        COORDINATOR.addConsumer(s_subscriptionId, address(this));
    }
    /**
     * @notice Fund link token from the VRF coordinator for subscription
     * @dev This function must be called by the owner of the contract.
     */
    function fundToCoordiator(uint96 _amount) external onlyOwner {
        LINKTOKEN.transferFrom(msg.sender, address(this), _amount);
        LINKTOKEN.transferAndCall(address(COORDINATOR), _amount, abi.encode(s_subscriptionId));
    }
    /**
     * @notice Fund link token from the VRF coordinator for subscription
     * @dev This function must be called by the owner of the contract.
     */
    function fundPeggedLinkToCoordiator(uint256 _amount) external onlyOwner {
        IERC20(ERC20_LINK_ADDRESS).transferFrom(msg.sender, address(this), _amount);
        IERC20(ERC20_LINK_ADDRESS).approve(PEGSWAP_ADDRESS, _amount);
        IPegSwap(PEGSWAP_ADDRESS).swap(_amount, ERC20_LINK_ADDRESS, address(LINKTOKEN));
        uint256 tokenBal = LINKTOKEN.balanceOf(address(this));
        LINKTOKEN.transferAndCall(address(COORDINATOR), tokenBal, abi.encode(s_subscriptionId));
    }
    /**
     * @notice Request random words from the VRF coordinator
     * @dev This function must be called by the owner of the contract.
     */
    function requestRandomWords() external onlyOwner {
        r_requestId = 0;
        // Will revert if subscription is not set and funded.
        s_requestId =
            COORDINATOR.requestRandomWords(keyHash, s_subscriptionId, requestConfirmations, callbackGasLimit, numWords);
    }
    function fulfillRandomWords(uint256 requestId, uint256[] memory randomWords) internal override {
        r_requestId = requestId;
        s_randomWords = randomWords;
    }
    function emergencyWithdrawETH() external onlyOwner {
        uint256 _tokenAmount = address(this).balance;
        payable(msg.sender).transfer(_tokenAmount);
    }
    /**
     * @notice It allows the admin to recover wrong tokens sent to the contract
     * @param _token: the address of the token to withdraw
     * @dev This function is only callable by admin.
     */
    function emergencyWithdrawToken(address _token) external onlyOwner {
        uint256 _tokenAmount = IERC20(_token).balanceOf(address(this));
        IERC20(_token).safeTransfer(msg.sender, _tokenAmount);
    }
    function isContract(address _addr) internal view returns (bool) {
        uint256 size;
        assembly {
            size := extcodesize(_addr)
        }
        return size > 0;
    }
    receive() external payable {}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }
    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }
    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }
    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }
    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }
    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)
pragma solidity ^0.8.0;
/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.
    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;
    uint256 private _status;
    constructor() {
        _status = _NOT_ENTERED;
    }
    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;
        _;
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);
    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);
    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);
    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);
    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);
    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);
    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
import "../IERC20.sol";
import "../../../utils/Address.sol";
/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;
    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }
    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }
    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }
    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }
    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }
    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.
        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface LinkTokenInterface {
  function allowance(address owner, address spender) external view returns (uint256 remaining);
  function approve(address spender, uint256 value) external returns (bool success);
  function balanceOf(address owner) external view returns (uint256 balance);
  function decimals() external view returns (uint8 decimalPlaces);
  function decreaseApproval(address spender, uint256 addedValue) external returns (bool success);
  function increaseApproval(address spender, uint256 subtractedValue) external;
  function name() external view returns (string memory tokenName);
  function symbol() external view returns (string memory tokenSymbol);
  function totalSupply() external view returns (uint256 totalTokensIssued);
  function transfer(address to, uint256 value) external returns (bool success);
  function transferAndCall(
    address to,
    uint256 value,
    bytes calldata data
  ) external returns (bool success);
  function transferFrom(
    address from,
    address to,
    uint256 value
  ) external returns (bool success);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface VRFCoordinatorV2Interface {
  /**
   * @notice Get configuration relevant for making requests
   * @return minimumRequestConfirmations global min for request confirmations
   * @return maxGasLimit global max for request gas limit
   * @return s_provingKeyHashes list of registered key hashes
   */
  function getRequestConfig()
    external
    view
    returns (
      uint16,
      uint32,
      bytes32[] memory
    );
  /**
   * @notice Request a set of random words.
   * @param keyHash - Corresponds to a particular oracle job which uses
   * that key for generating the VRF proof. Different keyHash's have different gas price
   * ceilings, so you can select a specific one to bound your maximum per request cost.
   * @param subId  - The ID of the VRF subscription. Must be funded
   * with the minimum subscription balance required for the selected keyHash.
   * @param minimumRequestConfirmations - How many blocks you'd like the
   * oracle to wait before responding to the request. See SECURITY CONSIDERATIONS
   * for why you may want to request more. The acceptable range is
   * [minimumRequestBlockConfirmations, 200].
   * @param callbackGasLimit - How much gas you'd like to receive in your
   * fulfillRandomWords callback. Note that gasleft() inside fulfillRandomWords
   * may be slightly less than this amount because of gas used calling the function
   * (argument decoding etc.), so you may need to request slightly more than you expect
   * to have inside fulfillRandomWords. The acceptable range is
   * [0, maxGasLimit]
   * @param numWords - The number of uint256 random values you'd like to receive
   * in your fulfillRandomWords callback. Note these numbers are expanded in a
   * secure way by the VRFCoordinator from a single random value supplied by the oracle.
   * @return requestId - A unique identifier of the request. Can be used to match
   * a request to a response in fulfillRandomWords.
   */
  function requestRandomWords(
    bytes32 keyHash,
    uint64 subId,
    uint16 minimumRequestConfirmations,
    uint32 callbackGasLimit,
    uint32 numWords
  ) external returns (uint256 requestId);
  /**
   * @notice Create a VRF subscription.
   * @return subId - A unique subscription id.
   * @dev You can manage the consumer set dynamically with addConsumer/removeConsumer.
   * @dev Note to fund the subscription, use transferAndCall. For example
   * @dev  LINKTOKEN.transferAndCall(
   * @dev    address(COORDINATOR),
   * @dev    amount,
   * @dev    abi.encode(subId));
   */
  function createSubscription() external returns (uint64 subId);
  /**
   * @notice Get a VRF subscription.
   * @param subId - ID of the subscription
   * @return balance - LINK balance of the subscription in juels.
   * @return reqCount - number of requests for this subscription, determines fee tier.
   * @return owner - owner of the subscription.
   * @return consumers - list of consumer address which are able to use this subscription.
   */
  function getSubscription(uint64 subId)
    external
    view
    returns (
      uint96 balance,
      uint64 reqCount,
      address owner,
      address[] memory consumers
    );
  /**
   * @notice Request subscription owner transfer.
   * @param subId - ID of the subscription
   * @param newOwner - proposed new owner of the subscription
   */
  function requestSubscriptionOwnerTransfer(uint64 subId, address newOwner) external;
  /**
   * @notice Request subscription owner transfer.
   * @param subId - ID of the subscription
   * @dev will revert if original owner of subId has
   * not requested that msg.sender become the new owner.
   */
  function acceptSubscriptionOwnerTransfer(uint64 subId) external;
  /**
   * @notice Add a consumer to a VRF subscription.
   * @param subId - ID of the subscription
   * @param consumer - New consumer which can use the subscription
   */
  function addConsumer(uint64 subId, address consumer) external;
  /**
   * @notice Remove a consumer from a VRF subscription.
   * @param subId - ID of the subscription
   * @param consumer - Consumer to remove from the subscription
   */
  function removeConsumer(uint64 subId, address consumer) external;
  /**
   * @notice Cancel a subscription
   * @param subId - ID of the subscription
   * @param to - Where to send the remaining LINK to
   */
  function cancelSubscription(uint64 subId, address to) external;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
/** ****************************************************************************
 * @notice Interface for contracts using VRF randomness
 * *****************************************************************************
 * @dev PURPOSE
 *
 * @dev Reggie the Random Oracle (not his real job) wants to provide randomness
 * @dev to Vera the verifier in such a way that Vera can be sure he's not
 * @dev making his output up to suit himself. Reggie provides Vera a public key
 * @dev to which he knows the secret key. Each time Vera provides a seed to
 * @dev Reggie, he gives back a value which is computed completely
 * @dev deterministically from the seed and the secret key.
 *
 * @dev Reggie provides a proof by which Vera can verify that the output was
 * @dev correctly computed once Reggie tells it to her, but without that proof,
 * @dev the output is indistinguishable to her from a uniform random sample
 * @dev from the output space.
 *
 * @dev The purpose of this contract is to make it easy for unrelated contracts
 * @dev to talk to Vera the verifier about the work Reggie is doing, to provide
 * @dev simple access to a verifiable source of randomness. It ensures 2 things:
 * @dev 1. The fulfillment came from the VRFCoordinator
 * @dev 2. The consumer contract implements fulfillRandomWords.
 * *****************************************************************************
 * @dev USAGE
 *
 * @dev Calling contracts must inherit from VRFConsumerBase, and can
 * @dev initialize VRFConsumerBase's attributes in their constructor as
 * @dev shown:
 *
 * @dev   contract VRFConsumer {
 * @dev     constructor(<other arguments>, address _vrfCoordinator, address _link)
 * @dev       VRFConsumerBase(_vrfCoordinator) public {
 * @dev         <initialization with other arguments goes here>
 * @dev       }
 * @dev   }
 *
 * @dev The oracle will have given you an ID for the VRF keypair they have
 * @dev committed to (let's call it keyHash). Create subscription, fund it
 * @dev and your consumer contract as a consumer of it (see VRFCoordinatorInterface
 * @dev subscription management functions).
 * @dev Call requestRandomWords(keyHash, subId, minimumRequestConfirmations,
 * @dev callbackGasLimit, numWords),
 * @dev see (VRFCoordinatorInterface for a description of the arguments).
 *
 * @dev Once the VRFCoordinator has received and validated the oracle's response
 * @dev to your request, it will call your contract's fulfillRandomWords method.
 *
 * @dev The randomness argument to fulfillRandomWords is a set of random words
 * @dev generated from your requestId and the blockHash of the request.
 *
 * @dev If your contract could have concurrent requests open, you can use the
 * @dev requestId returned from requestRandomWords to track which response is associated
 * @dev with which randomness request.
 * @dev See "SECURITY CONSIDERATIONS" for principles to keep in mind,
 * @dev if your contract could have multiple requests in flight simultaneously.
 *
 * @dev Colliding `requestId`s are cryptographically impossible as long as seeds
 * @dev differ.
 *
 * *****************************************************************************
 * @dev SECURITY CONSIDERATIONS
 *
 * @dev A method with the ability to call your fulfillRandomness method directly
 * @dev could spoof a VRF response with any random value, so it's critical that
 * @dev it cannot be directly called by anything other than this base contract
 * @dev (specifically, by the VRFConsumerBase.rawFulfillRandomness method).
 *
 * @dev For your users to trust that your contract's random behavior is free
 * @dev from malicious interference, it's best if you can write it so that all
 * @dev behaviors implied by a VRF response are executed *during* your
 * @dev fulfillRandomness method. If your contract must store the response (or
 * @dev anything derived from it) and use it later, you must ensure that any
 * @dev user-significant behavior which depends on that stored value cannot be
 * @dev manipulated by a subsequent VRF request.
 *
 * @dev Similarly, both miners and the VRF oracle itself have some influence
 * @dev over the order in which VRF responses appear on the blockchain, so if
 * @dev your contract could have multiple VRF requests in flight simultaneously,
 * @dev you must ensure that the order in which the VRF responses arrive cannot
 * @dev be used to manipulate your contract's user-significant behavior.
 *
 * @dev Since the block hash of the block which contains the requestRandomness
 * @dev call is mixed into the input to the VRF *last*, a sufficiently powerful
 * @dev miner could, in principle, fork the blockchain to evict the block
 * @dev containing the request, forcing the request to be included in a
 * @dev different block with a different hash, and therefore a different input
 * @dev to the VRF. However, such an attack would incur a substantial economic
 * @dev cost. This cost scales with the number of blocks the VRF oracle waits
 * @dev until it calls responds to a request. It is for this reason that
 * @dev that you can signal to an oracle you'd like them to wait longer before
 * @dev responding to the request (however this is not enforced in the contract
 * @dev and so remains effective only in the case of unmodified oracle software).
 */
abstract contract VRFConsumerBaseV2 {
  error OnlyCoordinatorCanFulfill(address have, address want);
  address private immutable vrfCoordinator;
  /**
   * @param _vrfCoordinator address of VRFCoordinator contract
   */
  constructor(address _vrfCoordinator) {
    vrfCoordinator = _vrfCoordinator;
  }
  /**
   * @notice fulfillRandomness handles the VRF response. Your contract must
   * @notice implement it. See "SECURITY CONSIDERATIONS" above for important
   * @notice principles to keep in mind when implementing your fulfillRandomness
   * @notice method.
   *
   * @dev VRFConsumerBaseV2 expects its subcontracts to have a method with this
   * @dev signature, and will call it once it has verified the proof
   * @dev associated with the randomness. (It is triggered via a call to
   * @dev rawFulfillRandomness, below.)
   *
   * @param requestId The Id initially returned by requestRandomness
   * @param randomWords the VRF output expanded to the requested number of words
   */
  function fulfillRandomWords(uint256 requestId, uint256[] memory randomWords) internal virtual;
  // rawFulfillRandomness is called by VRFCoordinator when it receives a valid VRF
  // proof. rawFulfillRandomness then calls fulfillRandomness, after validating
  // the origin of the call
  function rawFulfillRandomWords(uint256 requestId, uint256[] memory randomWords) external {
    if (msg.sender != vrfCoordinator) {
      revert OnlyCoordinatorCanFulfill(msg.sender, vrfCoordinator);
    }
    fulfillRandomWords(requestId, randomWords);
  }
}
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.0;
interface IPriceOracle {
    /**
     * @notice Get the price of a token
     * @param token The token to get the price of
     * @return The asset price mantissa (scaled by 1e18).
     *  Zero means the price is unavailable.
     */
    function getTokenPrice(address token) external view returns (uint256);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }
    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Address.sol)
pragma solidity ^0.8.0;
/**
 * @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
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.
        uint256 size;
        assembly {
            size := extcodesize(account)
        }
        return size > 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://diligence.consensys.net/posts/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/v0.5.11/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 functionCall(target, data, "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");
        require(isContract(target), "Address: call to non-contract");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(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) {
        require(isContract(target), "Address: static call to non-contract");
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(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) {
        require(isContract(target), "Address: delegate call to non-contract");
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }
    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason 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 {
            // 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
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.17;


interface IERC20 {
	function totalSupply() external view returns (uint256);

	function balanceOf(address account) external view returns (uint256);

	function transfer(address recipient, uint256 amount)
	external
	returns (bool);

	function allowance(address owner, address spender)
	external
	view
	returns (uint256);

	function approve(address spender, uint256 amount) external returns (bool);

	function transferFrom(
		address sender,
		address recipient,
		uint256 amount
	) external returns (bool);

	event Transfer(address indexed from, address indexed to, uint256 value);

	event Approval(
		address indexed owner,
		address indexed spender,
		uint256 value
	);
}

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

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

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

	function WETH() external pure returns (address);

	function addLiquidityETH(
		address token,
		uint256 amountTokenDesired,
		uint256 amountTokenMin,
		uint256 amountETHMin,
		address to,
		uint256 deadline
	)
	external
	payable
	returns (
		uint256 amountToken,
		uint256 amountETH,
		uint256 liquidity
	);

	function swapExactETHForTokensSupportingFeeOnTransferTokens(
		uint256 amountOutMin,
		address[] calldata path,
		address to,
		uint256 deadline
	) external payable;

	function swapExactTokensForETHSupportingFeeOnTransferTokens(
		uint256 amountIn,
		uint256 amountOutMin,
		address[] calldata path,
		address to,
		uint256 deadline
	) external;
}

library SafeMath {

	function add(uint256 a, uint256 b) internal pure returns (uint256) {
		uint256 c = a + b;
		require(c >= a, "SafeMath: addition overflow");

		return c;
	}

	function sub(uint256 a, uint256 b) internal pure returns (uint256) {
		return sub(a, b, "SafeMath: subtraction overflow");
	}

	function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
		require(b <= a, errorMessage);
		uint256 c = a - b;

		return c;
	}

	function mul(uint256 a, uint256 b) internal pure returns (uint256) {
		// 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 0;
		}

		uint256 c = a * b;
		require(c / a == b, "SafeMath: multiplication overflow");

		return c;
	}

	function div(uint256 a, uint256 b) internal pure returns (uint256) {
		return div(a, b, "SafeMath: division by zero");
	}

	function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
		require(b > 0, errorMessage);
		uint256 c = a / b;
		// assert(a == b * c + a % b); // There is no case in which this doesn't hold

		return c;
	}

	function mod(uint256 a, uint256 b) internal pure returns (uint256) {
		return mod(a, b, "SafeMath: modulo by zero");
	}

	function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
		require(b != 0, errorMessage);
		return a % b;
	}
}

library Address {
	function isContract(address account) internal view returns (bool) {
		uint256 size;
		assembly {
			size := extcodesize(account)
		}
		return size > 0;
	}

	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"
		);
	}

	function functionCall(address target, bytes memory data)
	internal
	returns (bytes memory)
	{
		return functionCall(target, data, "Address: low-level call failed");
	}

	function functionCall(
		address target,
		bytes memory data,
		string memory errorMessage
	) internal returns (bytes memory) {
		return functionCallWithValue(target, data, 0, errorMessage);
	}

	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"
		);
	}

	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"
		);
		require(isContract(target), "Address: call to non-contract");

		(bool success, bytes memory returndata) = target.call{value: value}(
		data
		);
		return _verifyCallResult(success, returndata, errorMessage);
	}

	function functionStaticCall(address target, bytes memory data)
	internal
	view
	returns (bytes memory)
	{
		return
		functionStaticCall(
			target,
			data,
			"Address: low-level static call failed"
		);
	}

	function functionStaticCall(
		address target,
		bytes memory data,
		string memory errorMessage
	) internal view returns (bytes memory) {
		require(isContract(target), "Address: static call to non-contract");

		(bool success, bytes memory returndata) = target.staticcall(data);
		return _verifyCallResult(success, returndata, errorMessage);
	}

	function functionDelegateCall(address target, bytes memory data)
	internal
	returns (bytes memory)
	{
		return
		functionDelegateCall(
			target,
			data,
			"Address: low-level delegate call failed"
		);
	}

	function functionDelegateCall(
		address target,
		bytes memory data,
		string memory errorMessage
	) internal returns (bytes memory) {
		require(isContract(target), "Address: delegate call to non-contract");

		(bool success, bytes memory returndata) = target.delegatecall(data);
		return _verifyCallResult(success, returndata, errorMessage);
	}

	function _verifyCallResult(
		bool success,
		bytes memory returndata,
		string memory errorMessage
	) private pure returns (bytes memory) {
		if (success) {
			return returndata;
		} else {
			if (returndata.length > 0) {
				assembly {
					let returndata_size := mload(returndata)
					revert(add(32, returndata), returndata_size)
				}
			} else {
				revert(errorMessage);
			}
		}
	}
}

abstract contract Context {
		function _msgSender() internal view virtual returns (address) {
		return msg.sender;
	}

	function _msgData() internal view virtual returns (bytes calldata) {
		this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
		return msg.data;
	}
}

contract Ownable is Context {
	address private _owner;

	event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

	constructor () {
		address msgSender = _msgSender();
		_owner = msgSender;
		emit OwnershipTransferred(address(0), msgSender);
	}

	function owner() public view returns (address) {
		return _owner;
	}

	modifier onlyOwner() {
		require(_owner == _msgSender(), "Ownable: caller is not the owner");
		_;
	}

	function renounceOwnership() public virtual onlyOwner {
		emit OwnershipTransferred(_owner, address(0));
		_owner = address(0);
	}

	function transferOwnership(address newOwner) public virtual onlyOwner {
		require(newOwner != address(0), "Ownable: new owner is the zero address");
		emit OwnershipTransferred(_owner, newOwner);
		_owner = newOwner;
	}
}

contract LuckyRoo is IERC20, Ownable {
	using Address for address;
	using SafeMath for uint256;

	IRouter public uniswapV2Router;
	address public immutable uniswapV2Pair;

	string private constant _name =  "LUCKY ROO";
	string private constant _symbol = "ROO";
	uint8 private constant _decimals = 18;

	mapping (address => uint256) private _rOwned;
	mapping (address => uint256) private _tOwned;
	mapping (address => mapping (address => uint256)) private _allowances;

	uint256 private constant MAX = ~uint256(0);
	uint256 private constant _tTotal = 10000000000000 * 10**18;
	uint256 private _rTotal = (MAX - (MAX % _tTotal));
	uint256 private _tFeeTotal;

	bool public isTradingEnabled;

	// max wallet is 1.5% of _tTotal
	uint256 public maxWalletAmount = _tTotal * 150 / 10000;

    // max buy and sell tx is 0.5% of _tTotal
	uint256 public maxTxAmount = _tTotal * 50 / 10000;

	bool private _swapping;
	uint256 public minimumTokensBeforeSwap = 25000000 * (10**18);

    address public liquidityWallet;
	address public marketingWallet;
	address public buyBackWallet;
    address public airdropWallet;

	struct CustomTaxPeriod {
		bytes23 periodName;
		uint8 blocksInPeriod;
		uint256 timeInPeriod;
		uint8 liquidityFeeOnBuy;
		uint8 liquidityFeeOnSell;
		uint8 marketingFeeOnBuy;
		uint8 marketingFeeOnSell;
		uint8 buyBackFeeOnBuy;
		uint8 buyBackFeeOnSell;
        uint8 airdropFeeOnBuy;
		uint8 airdropFeeOnSell;
		uint8 holdersFeeOnBuy;
		uint8 holdersFeeOnSell;
	}

	// Base taxes
	CustomTaxPeriod private _base = CustomTaxPeriod('base',0,0,1,1,3,3,1,1,1,1,2,2);

    uint256 private _launchStartTimestamp;
	uint256 private _launchBlockNumber;
    uint256 private constant _blockedTimeLimit = 172800;
    mapping (address => bool) private _isBlocked;
	mapping (address => bool) private _isExcludedFromFee;
	mapping (address => bool) private _isExcludedFromMaxTransactionLimit;
	mapping (address => bool) private _isExcludedFromMaxWalletLimit;
	mapping (address => bool) private _isAllowedToTradeWhenDisabled;
	mapping (address => bool) private _isExcludedFromDividends;
    mapping (address => bool) private _feeOnSelectedWalletTransfers;
	address[] private _excludedFromDividends;
	mapping (address => bool) public automatedMarketMakerPairs;

	uint8 private _liquidityFee;
	uint8 private _marketingFee;
	uint8 private _buyBackFee;
    uint8 private _airdropFee;
	uint8 private _holdersFee;
	uint8 private _totalFee;

	event AutomatedMarketMakerPairChange(address indexed pair, bool indexed value);
	event AllowedWhenTradingDisabledChange(address indexed account, bool isExcluded);
	event UniswapV2RouterChange(address indexed newAddress, address indexed oldAddress);
	event WalletChange(string indexed walletIdentifier, address indexed newWallet, address indexed oldWallet);
	event FeeChange(string indexed identifier, uint8 liquidityFee, uint8 marketingFee, uint8 buyBackFee, uint8 airdropFee, uint8 holdersFee);
	event CustomTaxPeriodChange(uint8 indexed newValue, uint8 indexed oldValue, string indexed taxType, bytes23 period);
	event BlockedAccountChange(address indexed holder, bool indexed status);
    event MaxTransactionAmountChange(uint256 indexed newValue, uint256 indexed oldValue);
	event MaxWalletAmountChange(uint256 indexed newValue, uint256 indexed oldValue);
	event MinTokenAmountBeforeSwapChange(uint256 indexed newValue, uint256 indexed oldValue);
	event ExcludeFromFeesChange(address indexed account, bool isExcluded);
	event ExcludeFromMaxTransferChange(address indexed account, bool isExcluded);
	event ExcludeFromMaxWalletChange(address indexed account, bool isExcluded);
	event ExcludeFromDividendsChange(address indexed account, bool isExcluded);
	event SwapAndLiquify(uint256 tokensSwapped, uint256 ethReceived,uint256 tokensIntoLiqudity);
    event FeeOnSelectedWalletTransfersChange(address indexed account, bool newValue);
	event ClaimEthOverflow(uint256 amount);
	event TradingStatusChange(bool indexed newValue, bool indexed oldValue);

	constructor() {
		liquidityWallet = owner();
        marketingWallet = owner();
		buyBackWallet = owner();
        airdropWallet = owner();

		IRouter _uniswapV2Router = IRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
		address _uniswapV2Pair = IFactory(_uniswapV2Router.factory()).createPair(
			address(this),
			_uniswapV2Router.WETH()
		);
		uniswapV2Router = _uniswapV2Router;
		uniswapV2Pair = _uniswapV2Pair;
		_setAutomatedMarketMakerPair(_uniswapV2Pair, true);

		_isExcludedFromFee[owner()] = true;
		_isExcludedFromFee[address(this)] = true;

		excludeFromDividends(address(0), true);
		excludeFromDividends(address(_uniswapV2Router), true);
		excludeFromDividends(address(_uniswapV2Pair), true);

		_isAllowedToTradeWhenDisabled[owner()] = true;

		_isExcludedFromMaxTransactionLimit[address(this)] = true;
		_isExcludedFromMaxTransactionLimit[owner()] = true;

		_isExcludedFromMaxWalletLimit[_uniswapV2Pair] = true;
		_isExcludedFromMaxWalletLimit[address(uniswapV2Router)] = true;
		_isExcludedFromMaxWalletLimit[address(this)] = true;
		_isExcludedFromMaxWalletLimit[owner()] = true;

		_rOwned[owner()] = _rTotal;
		emit Transfer(address(0), owner(), _tTotal);
	}

	receive() external payable {}

	// Setters
	function transfer(address recipient, uint256 amount) external override returns (bool) {
		_transfer(_msgSender(), recipient, amount);
		return true;
	}
	function approve(address spender, uint256 amount) public override returns (bool) {
		_approve(_msgSender(), spender, amount);
		return true;
	}
	function transferFrom( address sender,address recipient,uint256 amount) external override returns (bool) {
		_transfer(sender, recipient, amount);
		_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount,"ERC20: transfer amount exceeds allowance"));
		return true;
	}
	function increaseAllowance(address spender, uint256 addedValue) external virtual returns (bool){
		_approve(_msgSender(),spender,_allowances[_msgSender()][spender].add(addedValue));
		return true;
	}
	function decreaseAllowance(address spender, uint256 subtractedValue) external virtual returns (bool) {
		_approve(_msgSender(),spender,_allowances[_msgSender()][spender].sub(subtractedValue,"ERC20: decreased allowance below zero"));
		return true;
	}
	function _approve(address owner,address spender,uint256 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 activateTrading() external onlyOwner {
		isTradingEnabled = true;
        if (_launchStartTimestamp == 0) {
            _launchStartTimestamp = block.timestamp;
            _launchBlockNumber = block.number;
        }
		emit TradingStatusChange(true, false);
	}
	function deactivateTrading() external onlyOwner {
		isTradingEnabled = false;
		emit TradingStatusChange(false, true);
	}
	function allowTradingWhenDisabled(address account, bool allowed) external onlyOwner {
		_isAllowedToTradeWhenDisabled[account] = allowed;
		emit AllowedWhenTradingDisabledChange(account, allowed);
	}
    function setFeeOnSelectedWalletTransfers(address account, bool value) external onlyOwner {
		require(_feeOnSelectedWalletTransfers[account] != value, "LuckyRoo: The selected wallet is already set to the value ");
		_feeOnSelectedWalletTransfers[account] = value;
		emit FeeOnSelectedWalletTransfersChange(account, value);
	}
	function _setAutomatedMarketMakerPair(address pair, bool value) private {
		require(automatedMarketMakerPairs[pair] != value, "LuckyRoo: Automated market maker pair is already set to that value");
		automatedMarketMakerPairs[pair] = value;
		emit AutomatedMarketMakerPairChange(pair, value);
	}
    function blockAccount(address account) external onlyOwner {
		require(!_isBlocked[account], "LuckyRoo: Account is already blocked");
		if (_launchStartTimestamp > 0) {
			require((block.timestamp - _launchStartTimestamp) < _blockedTimeLimit, "LuckyRoo: Time to block accounts has expired");
		}
		_isBlocked[account] = true;
		emit BlockedAccountChange(account, true);
	}
	function unblockAccount(address account) external onlyOwner {
		require(_isBlocked[account], "LuckyRoo: Account is not blcoked");
		_isBlocked[account] = false;
		emit BlockedAccountChange(account, false);
	}
	function excludeFromFees(address account, bool excluded) external onlyOwner {
		require(_isExcludedFromFee[account] != excluded, "LuckyRoo: Account is already the value of 'excluded'");
		_isExcludedFromFee[account] = excluded;
		emit ExcludeFromFeesChange(account, excluded);
	}
	function excludeFromMaxTransactionLimit(address account, bool excluded) external onlyOwner {
		require(_isExcludedFromMaxTransactionLimit[account] != excluded, "LuckyRoo: Account is already the value of 'excluded'");
		_isExcludedFromMaxTransactionLimit[account] = excluded;
		emit ExcludeFromMaxTransferChange(account, excluded);
	}
	function excludeFromMaxWalletLimit(address account, bool excluded) external onlyOwner {
		require(_isExcludedFromMaxWalletLimit[account] != excluded, "LuckyRoo: Account is already the value of 'excluded'");
		_isExcludedFromMaxWalletLimit[account] = excluded;
		emit ExcludeFromMaxWalletChange(account, excluded);
	}
	function excludeFromDividends(address account, bool excluded) public onlyOwner {
		require(_isExcludedFromDividends[account] != excluded, "LuckyRoo: Account is already the value of 'excluded'");
		if(excluded) {
			if(_rOwned[account] > 0) {
				_tOwned[account] = tokenFromReflection(_rOwned[account]);
			}
			_isExcludedFromDividends[account] = excluded;
			_excludedFromDividends.push(account);
		} else {
			for (uint256 i = 0; i < _excludedFromDividends.length; i++) {
				if (_excludedFromDividends[i] == account) {
					_excludedFromDividends[i] = _excludedFromDividends[_excludedFromDividends.length - 1];
					_tOwned[account] = 0;
					_isExcludedFromDividends[account] = false;
					_excludedFromDividends.pop();
					break;
				}
			}
		}
		emit ExcludeFromDividendsChange(account, excluded);
	}
	function setWallets(address newLiquidityWallet, address newMarketingWallet, address newBuyBackWallet, address newAirdropWallet) external onlyOwner {
		if(liquidityWallet != newLiquidityWallet) {
			require(newLiquidityWallet != address(0), "LuckyRoo: The liquidityWallet cannot be 0");
			emit WalletChange('liquidityWallet', newLiquidityWallet, liquidityWallet);
			liquidityWallet = newLiquidityWallet;
		}
		if(marketingWallet != newMarketingWallet) {
			require(newMarketingWallet != address(0), "LuckyRoo: The marketingWallet cannot be 0");
			emit WalletChange('marketingWallet', newMarketingWallet, marketingWallet);
			marketingWallet = newMarketingWallet;
		}
		if(buyBackWallet != newBuyBackWallet) {
			require(newBuyBackWallet != address(0), "LuckyRoo: The buyBackWallet cannot be 0");
			emit WalletChange('buyBackWallet', newBuyBackWallet, buyBackWallet);
			buyBackWallet = newBuyBackWallet;
		}
        if(airdropWallet != newAirdropWallet) {
			require(newAirdropWallet != address(0), "LuckyRoo: The airdropWallet cannot be 0");
			emit WalletChange('airdropWallet', newAirdropWallet, airdropWallet);
			airdropWallet = newAirdropWallet;
		}
	}
	function setBaseFeesOnBuy(uint8 _liquidityFeeOnBuy, uint8 _marketingFeeOnBuy, uint8 _buyBackFeeOnBuy, uint8 _airdropFeeOnBuy, uint8 _holdersFeeOnBuy) external onlyOwner {
		_setCustomBuyTaxPeriod(_base, _liquidityFeeOnBuy, _marketingFeeOnBuy, _buyBackFeeOnBuy, _airdropFeeOnBuy, _holdersFeeOnBuy);
		emit FeeChange('baseFees-Buy', _liquidityFeeOnBuy, _marketingFeeOnBuy, _buyBackFeeOnBuy, _airdropFeeOnBuy, _holdersFeeOnBuy);
	}
	function setBaseFeesOnSell(uint8 _liquidityFeeOnSell,uint8 _marketingFeeOnSell, uint8 _buyBackFeeOnSell, uint8 _airdropFeeOnSell, uint8 _holdersFeeOnSell) external onlyOwner {
		_setCustomSellTaxPeriod(_base, _liquidityFeeOnSell, _marketingFeeOnSell, _buyBackFeeOnSell, _airdropFeeOnSell, _holdersFeeOnSell);
		emit FeeChange('baseFees-Sell', _liquidityFeeOnSell, _marketingFeeOnSell, _buyBackFeeOnSell, _airdropFeeOnSell, _holdersFeeOnSell);
	}
	function setUniswapRouter(address newAddress) external onlyOwner {
		require(newAddress != address(uniswapV2Router), "LuckyRoo: The router already has that address");
		emit UniswapV2RouterChange(newAddress, address(uniswapV2Router));
		uniswapV2Router = IRouter(newAddress);
	}
	function setMaxTransactionAmount(uint256 newValue) external onlyOwner {
		require(newValue != maxTxAmount, "LuckyRoo: Cannot update maxTxAmount to same value");
		emit MaxTransactionAmountChange(newValue, maxTxAmount);
		maxTxAmount = newValue;
	}
	function setMaxWalletAmount(uint256 newValue) external onlyOwner {
		require(newValue != maxWalletAmount, "LuckyRoo: Cannot update maxWalletAmount to same value");
		emit MaxWalletAmountChange(newValue, maxWalletAmount);
		maxWalletAmount = newValue;
	}
	function setMinimumTokensBeforeSwap(uint256 newValue) external onlyOwner {
		require(newValue != minimumTokensBeforeSwap, "LuckyRoo: Cannot update minimumTokensBeforeSwap to same value");
		emit MinTokenAmountBeforeSwapChange(newValue, minimumTokensBeforeSwap);
		minimumTokensBeforeSwap = newValue;
	}
	function claimEthOverflow(uint256 amount) external onlyOwner {
		require(amount < address(this).balance, "LuckyRoo: Cannot send more than contract balance");
		(bool success,) = address(owner()).call{value : amount}("");
		if (success){
			emit ClaimEthOverflow(amount);
		}
	}

	// Getters
	function name() external pure returns (string memory) {
		return _name;
	}
	function symbol() external pure returns (string memory) {
		return _symbol;
	}
	function decimals() external view virtual returns (uint8) {
		return _decimals;
	}
	function totalSupply() external pure override returns (uint256) {
		return _tTotal;
	}
	function balanceOf(address account) public view override returns (uint256) {
		if (_isExcludedFromDividends[account]) return _tOwned[account];
		return tokenFromReflection(_rOwned[account]);
	}
	function totalFees() external view returns (uint256) {
		return _tFeeTotal;
	}
	function allowance(address owner, address spender) external view override returns (uint256) {
		return _allowances[owner][spender];
	}
	function getBaseBuyFees() external view returns (uint8, uint8, uint8, uint8, uint8){
		return (_base.liquidityFeeOnBuy, _base.marketingFeeOnBuy, _base.buyBackFeeOnBuy, _base.airdropFeeOnBuy, _base.holdersFeeOnBuy);
	}
	function getBaseSellFees() external view returns (uint8, uint8, uint8, uint8, uint8){
		return (_base.liquidityFeeOnSell, _base.marketingFeeOnSell, _base.buyBackFeeOnSell, _base.airdropFeeOnSell, _base.holdersFeeOnSell);
	}
	function tokenFromReflection(uint256 rAmount) public view returns(uint256) {
		require(rAmount <= _rTotal, "LuckyRoo: Amount must be less than total reflections");
		uint256 currentRate =  _getRate();
		return rAmount / currentRate;
	}
	function reflectionFromToken(uint256 tAmount, bool deductTransferFee) external view returns (uint256) {
		require(tAmount <= _tTotal, "LuckyRoo: Amount must be less than supply");
		uint256 currentRate = _getRate();
		uint256 rAmount  = tAmount * currentRate;
		if (!deductTransferFee) {
			return rAmount;
		}
		else {
			uint256 rTotalFee  = tAmount * _totalFee / 100 * currentRate;
			uint256 rTransferAmount = rAmount - rTotalFee;
			return rTransferAmount;
		}
	}

	// Main
	function _transfer(
	address from,
	address to,
	uint256 amount
	) internal {
		require(from != address(0), "ERC20: transfer from the zero address");
		require(to != address(0), "ERC20: transfer to the zero address");
		require(amount > 0, "LuckyRoo: Transfer amount must be greater than zero");
		require(amount <= balanceOf(from), "LuckyRoo: Cannot transfer more than balance");

		if(!_isAllowedToTradeWhenDisabled[from] && !_isAllowedToTradeWhenDisabled[to]) {
			require(isTradingEnabled, "LuckyRoo: Trading is currently disabled.");
            require(!_isBlocked[to], "LuckyRoo: Account is blocked");
			require(!_isBlocked[from], "LuckyRoo: Account is blocked");
			if (!_isExcludedFromMaxTransactionLimit[to] && !_isExcludedFromMaxTransactionLimit[from]) {
				require(amount <= maxTxAmount, "LuckyRoo: Buy amount exceeds the maxTxBuyAmount.");
			}
			if (!_isExcludedFromMaxWalletLimit[to]) {
				require((balanceOf(to) + amount) <= maxWalletAmount, "LuckyRoo: Expected wallet amount exceeds the maxWalletAmount.");
			}
		}

		_adjustTaxes(automatedMarketMakerPairs[from], automatedMarketMakerPairs[to], to, from);
		bool canSwap = balanceOf(address(this)) >= minimumTokensBeforeSwap;

		if (
			isTradingEnabled &&
			canSwap &&
			!_swapping &&
			_totalFee > 0 &&
			automatedMarketMakerPairs[to]
		) {
			_swapping = true;
			_swapAndLiquify();
			_swapping = false;
		}

		bool takeFee = !_swapping && isTradingEnabled;

		if(_isExcludedFromFee[from] || _isExcludedFromFee[to]){
			takeFee = false;
		}

		_tokenTransfer(from, to, amount, takeFee);

	}
	function _tokenTransfer(address sender,address recipient, uint256 tAmount, bool takeFee) private {
		(uint256 tTransferAmount,uint256 tFee, uint256 tOther) = _getTValues(tAmount, takeFee);
		(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 rOther) = _getRValues(tAmount, tFee, tOther, _getRate());

		if (_isExcludedFromDividends[sender]) {
			_tOwned[sender] = _tOwned[sender] - tAmount;
		}
		if (_isExcludedFromDividends[recipient]) {
			_tOwned[recipient] = _tOwned[recipient] + tTransferAmount;
		}
		_rOwned[sender] = _rOwned[sender] - rAmount;
		_rOwned[recipient] = _rOwned[recipient] + rTransferAmount;
		_reflectFee(rFee, tFee, rOther, tOther);
		emit Transfer(sender, recipient, tTransferAmount);
	}
	function _reflectFee(uint256 rFee, uint256 tFee, uint256 rOther, uint256 tOther) private {
		_rTotal -= rFee;
		_tFeeTotal += tFee;

        if (_isExcludedFromDividends[address(this)]) {
			_tOwned[address(this)] += tOther;
		}
		_rOwned[address(this)] += rOther;
	}
	function _getTValues(uint256 tAmount, bool takeFee) private view returns (uint256,uint256,uint256){
		if (!takeFee) {
			return (tAmount, 0, 0);
		}
		else {
			uint256 tFee = tAmount * _holdersFee / 100;
			uint256 tOther = tAmount * (_liquidityFee + _marketingFee + _airdropFee + _buyBackFee) / 100;
			uint256 tTransferAmount = tAmount - (tFee + tOther);
			return (tTransferAmount, tFee, tOther);
		}
	}
	function _getRValues(
		uint256 tAmount,
		uint256 tFee,
		uint256 tOther,
		uint256 currentRate
		) private pure returns ( uint256, uint256, uint256, uint256) {
		uint256 rAmount = tAmount * currentRate;
		uint256 rFee = tFee * currentRate;
		uint256 rOther = tOther * currentRate;
		uint256 rTransferAmount = rAmount - (rFee + rOther);
		return (rAmount, rTransferAmount, rFee, rOther);
	}
	function _getRate() private view returns (uint256) {
		(uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
		return rSupply.div(tSupply);
	}
	function _getCurrentSupply() private view returns (uint256, uint256) {
		uint256 rSupply = _rTotal;
		uint256 tSupply = _tTotal;
		for (uint256 i = 0; i < _excludedFromDividends.length; i++) {
			if (
				_rOwned[_excludedFromDividends[i]] > rSupply ||
				_tOwned[_excludedFromDividends[i]] > tSupply
			) return (_rTotal, _tTotal);
			rSupply = rSupply - _rOwned[_excludedFromDividends[i]];
			tSupply = tSupply - _tOwned[_excludedFromDividends[i]];
		}
		if (rSupply < _rTotal / _tTotal) return (_rTotal, _tTotal);
		return (rSupply, tSupply);
	}
	function _adjustTaxes(bool isBuyFromLp, bool isSelltoLp, address to, address from) private {
		_liquidityFee = 0;
        _marketingFee = 0;
        _airdropFee = 0;
        _buyBackFee = 0;
        _holdersFee = 0;

        if (isBuyFromLp) {
            if (block.number - _launchBlockNumber <= 5) {
                _liquidityFee = 100;
            }
			else {
                _liquidityFee = _base.liquidityFeeOnBuy;
                _marketingFee = _base.marketingFeeOnBuy;
                _buyBackFee = _base.buyBackFeeOnBuy;
                _airdropFee = _base.airdropFeeOnBuy;
                _holdersFee = _base.holdersFeeOnBuy;
            }
		}
		if (isSelltoLp) {
			_liquidityFee = _base.liquidityFeeOnSell;
			_marketingFee = _base.marketingFeeOnSell;
			_buyBackFee = _base.buyBackFeeOnSell;
            _airdropFee = _base.airdropFeeOnSell;
			_holdersFee = _base.holdersFeeOnSell;
		}
		if (!isSelltoLp && !isBuyFromLp && (_feeOnSelectedWalletTransfers[from] || _feeOnSelectedWalletTransfers[to])) {
			_liquidityFee = _base.liquidityFeeOnSell;
			_marketingFee = _base.marketingFeeOnSell;
			_buyBackFee = _base.buyBackFeeOnSell;
            _airdropFee = _base.airdropFeeOnSell;
			_holdersFee = _base.holdersFeeOnSell;
		}
		_totalFee = _liquidityFee + _marketingFee + _buyBackFee + _airdropFee + _holdersFee;
	}
	function _setCustomSellTaxPeriod(CustomTaxPeriod storage map,
		uint8 _liquidityFeeOnSell,
		uint8 _marketingFeeOnSell,
		uint8 _buyBackFeeOnSell,
        uint8 _airdropFeeOnSell,
		uint8 _holdersFeeOnSell
		) private {
		if (map.liquidityFeeOnSell != _liquidityFeeOnSell) {
			emit CustomTaxPeriodChange(_liquidityFeeOnSell, map.liquidityFeeOnSell, 'liquidityFeeOnSell', map.periodName);
			map.liquidityFeeOnSell = _liquidityFeeOnSell;
		}
		if (map.marketingFeeOnSell != _marketingFeeOnSell) {
			emit CustomTaxPeriodChange(_marketingFeeOnSell, map.marketingFeeOnSell, 'marketingFeeOnSell', map.periodName);
			map.marketingFeeOnSell = _marketingFeeOnSell;
		}
		if (map.buyBackFeeOnSell != _buyBackFeeOnSell) {
			emit CustomTaxPeriodChange(_buyBackFeeOnSell, map.buyBackFeeOnSell, 'buyBackFeeOnSell', map.periodName);
			map.buyBackFeeOnSell = _buyBackFeeOnSell;
		}
        if (map.airdropFeeOnSell != _airdropFeeOnSell) {
			emit CustomTaxPeriodChange(_airdropFeeOnSell, map.airdropFeeOnSell, 'airdropFeeOnSell', map.periodName);
			map.airdropFeeOnSell = _airdropFeeOnSell;
		}
		if (map.holdersFeeOnSell != _holdersFeeOnSell) {
			emit CustomTaxPeriodChange(_holdersFeeOnSell, map.holdersFeeOnSell, 'holdersFeeOnSell', map.periodName);
			map.holdersFeeOnSell = _holdersFeeOnSell;
		}
	}
	function _setCustomBuyTaxPeriod(CustomTaxPeriod storage map,
		uint8 _liquidityFeeOnBuy,
		uint8 _marketingFeeOnBuy,
		uint8 _buyBackFeeOnBuy,
        uint8 _airdropFeeOnBuy,
		uint8 _holdersFeeOnBuy
		) private {
		if (map.liquidityFeeOnBuy != _liquidityFeeOnBuy) {
			emit CustomTaxPeriodChange(_liquidityFeeOnBuy, map.liquidityFeeOnBuy, 'liquidityFeeOnBuy', map.periodName);
			map.liquidityFeeOnBuy = _liquidityFeeOnBuy;
		}
		if (map.marketingFeeOnBuy != _marketingFeeOnBuy) {
			emit CustomTaxPeriodChange(_marketingFeeOnBuy, map.marketingFeeOnBuy, 'marketingFeeOnBuy', map.periodName);
			map.marketingFeeOnBuy = _marketingFeeOnBuy;
		}
		if (map.buyBackFeeOnBuy != _buyBackFeeOnBuy) {
			emit CustomTaxPeriodChange(_buyBackFeeOnBuy, map.buyBackFeeOnBuy, 'buyBackFeeOnBuy', map.periodName);
			map.buyBackFeeOnBuy = _buyBackFeeOnBuy;
		}
        if (map.airdropFeeOnBuy != _airdropFeeOnBuy) {
			emit CustomTaxPeriodChange(_airdropFeeOnBuy, map.airdropFeeOnBuy, 'airdropFeeOnBuy', map.periodName);
			map.airdropFeeOnBuy = _airdropFeeOnBuy;
		}
		if (map.holdersFeeOnBuy != _holdersFeeOnBuy) {
			emit CustomTaxPeriodChange(_holdersFeeOnBuy, map.holdersFeeOnBuy, 'holdersFeeOnBuy', map.periodName);
			map.holdersFeeOnBuy = _holdersFeeOnBuy;
		}
	}
	function _swapAndLiquify() private {
		uint256 contractBalance = balanceOf(address(this));
		uint256 initialEthBalance = address(this).balance;

		uint8 totalFeePrior = _totalFee;
		uint8 liquidityFeePrior = _liquidityFee;
		uint8 marketingFeePrior = _marketingFee;
		uint8 buyBackFeePrior  = _buyBackFee;
        uint8 airdropFeePrior = _airdropFee;
		uint8 holdersFeePrior = _holdersFee;

		uint256 amountToLiquify = contractBalance * _liquidityFee / _totalFee / 2;
		uint256 amountToSwap = contractBalance - amountToLiquify;

		_swapTokensForEth(amountToSwap);

		uint256 ethBalanceAfterSwap = address(this).balance - initialEthBalance;
		uint256 totalEthFee = totalFeePrior - (liquidityFeePrior / 2) - (holdersFeePrior);
		uint256 amountEthLiquidity = ethBalanceAfterSwap * liquidityFeePrior / totalEthFee / 2;
		uint256 amountEthMarketing = ethBalanceAfterSwap * marketingFeePrior / totalEthFee;
		uint256 amountEthBuyBack = ethBalanceAfterSwap * buyBackFeePrior / totalEthFee;
		uint256 amountEthAirdrop = ethBalanceAfterSwap - (amountEthLiquidity + amountEthMarketing + amountEthBuyBack);

		Address.sendValue(payable(marketingWallet),amountEthMarketing);
        Address.sendValue(payable(buyBackWallet),amountEthBuyBack);
        Address.sendValue(payable(airdropWallet),amountEthAirdrop);

		if (amountToLiquify > 0) {
			_addLiquidity(amountToLiquify, amountEthLiquidity);
			emit SwapAndLiquify(amountToSwap, amountEthLiquidity, amountToLiquify);
		}

		_totalFee = totalFeePrior;
		_liquidityFee = liquidityFeePrior;
		_marketingFee = marketingFeePrior;
		_buyBackFee = buyBackFeePrior;
        _airdropFee = airdropFeePrior;
		_holdersFee = holdersFeePrior;
	}
	function _swapTokensForEth(uint256 tokenAmount) private {
		address[] memory path = new address[](2);
		path[0] = address(this);
		path[1] = uniswapV2Router.WETH();
		_approve(address(this), address(uniswapV2Router), tokenAmount);
		uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
			tokenAmount,
			1, // accept any amount of ETH
			path,
			address(this),
			block.timestamp
		);
	}
	function _addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
		_approve(address(this), address(uniswapV2Router), tokenAmount);
		uniswapV2Router.addLiquidityETH{value: ethAmount}(
			address(this),
			tokenAmount,
			1, // slippage is unavoidable
			1, // slippage is unavoidable
			liquidityWallet,
			block.timestamp
		);
	}
}