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Contract Diff Checker

Contract Name:
BullRun

Contract Source Code:

File 1 of 1 : BullRun

// SPDX-License-Identifier: Unlicensed
pragma solidity ^0.8.9;

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

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}
//  MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

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

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

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

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

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

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

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

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);
}
//  MIT
// OpenZeppelin Contracts (last updated v4.7.0) (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
     * ====
     *
     * [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/v0.5.11/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 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);
        }
    }
}
//  MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;


/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

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

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

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

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

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

pragma solidity >=0.6.2;

pragma solidity >=0.6.2;

interface IUniswapV2Router01 {
    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 removeLiquidity(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB);
    function removeLiquidityETH(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountToken, uint amountETH);
    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountA, uint amountB);
    function removeLiquidityETHWithPermit(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountToken, uint amountETH);
    function swapExactTokensForTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapTokensForExactTokens(
        uint amountOut,
        uint amountInMax,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);
    function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);
    function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);
    function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);

    function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
    function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
    function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
    function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
    function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}

interface IUniswapV2Router02 is IUniswapV2Router01 {
    function removeLiquidityETHSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountETH);
    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) 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;
}
pragma solidity >=0.5.0;

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;
}

contract BullRunFeeHandler is Ownable {

    IUniswapV2Router02 public immutable uniswapV2Router;
    IERC20 public usdc;
    IERC20 public brlToken;

    address public marketingWallet;
    address public opsWallet;
    address public farmWallet;

    event SwapAndLiquify(uint256 tokensSwapped,uint256 ethReceived,uint256 tokensIntoLiqudity);

    constructor(address _brlToken, address _marketingWallet, address _opsWallet, address _farmWallet) {
        IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);

        uniswapV2Router = _uniswapV2Router;

        brlToken = IERC20(_brlToken);
        marketingWallet = _marketingWallet;
        opsWallet = _opsWallet;
        farmWallet = _farmWallet;

        usdc = IERC20(0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48);
        IERC20(usdc).approve(address(_uniswapV2Router), type(uint256).max);

    }

    function processFees(uint256 liquidityTokens, uint256 opsTokens, uint256 marketingTokens, uint256 farmTokens) external onlyOwner {

        uint256 half = liquidityTokens / 2;
        uint256 otherHalf = liquidityTokens - half;

        uint256 total = half + opsTokens + marketingTokens + farmTokens;

        IERC20(brlToken).approve(address(uniswapV2Router), total + otherHalf);

        address[] memory path = new address[](2);
        path[0] = address(brlToken);
        path[1] = address(usdc);

        // make the swap
        uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(
            total,
            0, // accept any amount of USDC
            path,
            address(this),
            block.timestamp
        );

        uint256 usdcBalance = IERC20(usdc).balanceOf(address(this));
        uint256 liquidity = usdcBalance * half / total;
        uint256 marketing = usdcBalance * marketingTokens / total;
        uint256 ops = usdcBalance * opsTokens / total;
        uint256 farm = usdcBalance - liquidity - marketing - ops;

        uniswapV2Router.addLiquidity(
            address(brlToken),
            address(usdc),
            otherHalf,
            liquidity,
            0,
            0,
            address(0xdead),
            block.timestamp
        );

        emit SwapAndLiquify(half, liquidity, otherHalf);

        usdc.transfer(marketingWallet, marketing);
        usdc.transfer(opsWallet, ops);
        usdc.transfer(farmWallet, farm);

    }

    function updateMarketingWallet(address newWallet) external onlyOwner {
        marketingWallet = newWallet;
    }

    function updateOpsWallet(address newWallet) external onlyOwner {
        opsWallet = newWallet;
    }

    function updateFarmWallet(address newWallet) external onlyOwner {
        farmWallet = newWallet;
    }

}

error InsufficientAllowance();
error InvalidInput();
error InvalidTransfer(address from, address to);
error TransferDelayEnabled(uint256 currentBlock, uint256 enabledBlock);
error ExceedsMaxTxAmount(uint256 attempt, uint256 max);
error ExceedsMaxWalletAmount(uint256 attempt, uint256 max);
error InvalidPairAddress();
error InvalidConfiguration();

contract BullRun is Context, IERC20, Ownable {
    using Address for address;

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

    mapping (address => bool) private _isExcludedFromFees;
    mapping (address => bool) public _isExcludedMaxTransactionAmount;

    mapping (address => bool) private _isExcluded;
    address[] private _excluded;

    uint256 private constant MAX = ~uint256(0);
    uint256 private _tTotal = 10**6 * 10**18; //1 million
    uint256 private _rTotal = (MAX - (MAX % _tTotal));
    uint256 private _tFeeTotal;

    string private _name = "BullRun";
    string private _symbol = "BRL";
    uint8 private _decimals = 18;

    IUniswapV2Router02 public immutable uniswapV2Router;
    address public immutable uniswapV2Pair;

    BullRunFeeHandler public brlFeeHandler;

    mapping (address => bool) public automatedMarketMakerPairs;

    IERC20 public usdc;

    bool private swapping;
    bool public swapEnabled;

    uint256 public tokensForLiquidity;
    uint256 public tokensForOps;
    uint256 public tokensForMarketing;
    uint256 public tokensForFarmRewards;

    mapping(address => uint256) private _holderLastTransferTimestamp;

    uint256 public maxTransactionAmount = 5000 * 10**18; //0.5% of total supply
    uint256 public swapTokensAtAmount = 500 * 10**18; //0.05% of total supply
    uint256 public maxWallet = 10000 * 10**18; //1% of total supply;

    uint256 public delay = 5;

    event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap);
    event SwapAndLiquifyEnabledUpdated(bool enabled);
    event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);
    event UpdateFeeHandler(address indexed newAddress, address indexed oldAddress);

    constructor (address _marketingWallet, address _opsWallet, address _farmWallet) {
        IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);

        excludeFromMaxTransaction(address(_uniswapV2Router), true);
        uniswapV2Router = _uniswapV2Router;

        usdc = IERC20(0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48);

        uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
            .createPair(address(this), address(usdc));

        excludeFromMaxTransaction(address(uniswapV2Pair), true);
        _setAutomatedMarketMakerPair(address(uniswapV2Pair), true);

        brlFeeHandler = new BullRunFeeHandler(address(this), _marketingWallet, _opsWallet, _farmWallet);

        _isExcludedFromFees[owner()] = true;
        _isExcludedFromFees[address(this)] = true;
        _isExcludedFromFees[address(brlFeeHandler)] = true;
        _isExcludedFromFees[address(0xdead)] = true;

        _isExcludedMaxTransactionAmount[owner()] = true;
        _isExcludedMaxTransactionAmount[address(this)] = true;
        _isExcludedMaxTransactionAmount[address(brlFeeHandler)] = true;
        _isExcludedMaxTransactionAmount[address(0xdead)] = true;

        _approve(address(this), address(uniswapV2Router), type(uint256).max);
        _rOwned[_msgSender()] = _rTotal;

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

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

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

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

    function totalSupply() public view override returns (uint256) {
        return _tTotal;
    }

    function balanceOf(address account) public view override returns (uint256) {
        if (_isExcluded[account]) return _tOwned[account];
        return tokenFromReflection(_rOwned[account]);
    }

    function transfer(address recipient, uint256 amount) public override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    function allowance(address owner, address spender) public view override returns (uint256) {
        return _allowances[owner][spender];
    }

    function approve(address spender, uint256 amount) public override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
        address spender = _msgSender();
        uint256 currentAllowance = _allowances[sender][spender];
        if (currentAllowance != type(uint256).max) {
            if (currentAllowance < amount) {
                revert InsufficientAllowance();
            }
            unchecked {
                _approve(sender, spender, currentAllowance - amount);
            }
        }
        _transfer(sender, recipient, amount);
        return true;
    }

    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
        return true;
    }

    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = _allowances[_msgSender()][spender];
        if (currentAllowance < subtractedValue) {
            revert InvalidInput();
        }
        unchecked {
          _approve(owner, spender, currentAllowance - subtractedValue);
        }
        return true;
    }

    function isExcludedFromReward(address account) public view returns (bool) {
        return _isExcluded[account];
    }

    function totalFees() public view returns (uint256) {
        return _tFeeTotal;
    }

    function tokenFromReflection(uint256 rAmount) public view returns(uint256) {
        if (rAmount > _rTotal) {
            revert InvalidInput();
        }
        uint256 currentRate =  _getRate();
        return rAmount / currentRate;
    }

    function excludeFromReward(address account) public onlyOwner() {
        if (_isExcluded[account]) {
            revert InvalidInput();
        }
        if(_rOwned[account] > 0) {
            _tOwned[account] = tokenFromReflection(_rOwned[account]);
        }
        _isExcluded[account] = true;
        _excluded.push(account);
    }

    function includeInReward(address account) public onlyOwner() {
        if (!_isExcluded[account]) {
            revert InvalidInput();
        }
        for (uint256 i = 0; i < _excluded.length; i++) {
            if (_excluded[i] == account) {
                _excluded[i] = _excluded[_excluded.length - 1];
                _tOwned[account] = 0;
                _isExcluded[account] = false;
                _excluded.pop();
                break;
            }
        }
    }

    function excludeFromFees(address account) public onlyOwner {
        _isExcludedFromFees[account] = true;
    }

    function includeInFees(address account) public onlyOwner {
        _isExcludedFromFees[account] = false;
    }

    function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() {
        maxTransactionAmount = _tTotal * maxTxPercent / 100;
    }

    function setMaxWalletSize(uint256 maxWalletPercent) external onlyOwner() {
        maxWallet = _tTotal * maxWalletPercent / 100;
    }

    function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {
        swapEnabled = _enabled;
        emit SwapAndLiquifyEnabledUpdated(_enabled);
    }

    function _getRate() private view returns(uint256) {
        (uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
        return rSupply / tSupply;
    }

    function _getCurrentSupply() private view returns(uint256, uint256) {
        uint256 rSupply = _rTotal;
        uint256 tSupply = _tTotal;
        for (uint256 i = 0; i < _excluded.length; i++) {
            if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal);
            rSupply -= _rOwned[_excluded[i]];
            tSupply -= _tOwned[_excluded[i]];
        }
        if (rSupply < _rTotal / _tTotal) return (_rTotal, _tTotal);
        return (rSupply, tSupply);
    }

    function isExcludedFromFees(address account) public view returns(bool) {
        return _isExcludedFromFees[account];
    }

    function _approve(address owner, address spender, uint256 amount) private {
        if (owner == address(0) || spender == address(0)) {
            revert InvalidInput();
        }

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    function _transfer(
        address from,
        address to,
        uint256 amount
    ) private {
        if (from == address(0) || to == address(0)) {
            revert InvalidTransfer(from, to);
        }

        if(amount == 0) {
           emit Transfer(from, to, amount);
           return;
        }

        if (
            from != owner() &&
            to != owner() &&
            to != address(0) &&
            to != address(0xdead) &&
            !swapping
        ){

            if (automatedMarketMakerPairs[from] || automatedMarketMakerPairs[to]) {
                uint256 delayedUntil = _holderLastTransferTimestamp[tx.origin];
                if (delayedUntil > block.number) {
                    revert TransferDelayEnabled(block.number, delayedUntil);
                }
                _holderLastTransferTimestamp[tx.origin] = block.number + delay;
            }

            if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) { //buys
                if (amount > maxTransactionAmount) {
                    revert ExceedsMaxTxAmount(amount, maxTransactionAmount);
                }
                uint256 potentialBalance = amount + balanceOf(to);
                if (potentialBalance > maxWallet) {
                    revert ExceedsMaxWalletAmount(potentialBalance, maxWallet);
                }

            } else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) { //sells
                if (amount > maxTransactionAmount) {
                    revert ExceedsMaxTxAmount(amount, maxTransactionAmount);
                }
            } else if(!_isExcludedMaxTransactionAmount[to]){
                uint256 potentialBalance = amount + balanceOf(to);
                if (potentialBalance > maxWallet) {
                    revert ExceedsMaxWalletAmount(potentialBalance, maxWallet);
                }
            }
        }

        bool canSwap = balanceOf(address(brlFeeHandler)) >= swapTokensAtAmount;

        if (
            canSwap &&
            !swapping &&
            swapEnabled &&
            !automatedMarketMakerPairs[from] &&
            !_isExcludedFromFees[from] &&
            !_isExcludedFromFees[to]
        ) {
            swapping = true;

            brlFeeHandler.processFees(tokensForLiquidity, tokensForOps, tokensForMarketing, tokensForFarmRewards);

            tokensForLiquidity = 0;
            tokensForMarketing = 0;
            tokensForOps = 0;
            tokensForFarmRewards = 0;

            swapping = false;

        }

        uint256 currentRate = _getRate();
        uint256 rAmount = amount * currentRate;
        uint256 rTransferAmount = rAmount;
        uint256 tTransferAmount = amount;

        if (!_isExcludedFromFees[from] && !_isExcludedFromFees[to]) {
            uint256 rBurn;
            uint256 rRewards;

            uint256 tRewards;
            uint256 tBurn;
            uint256 tRemainingFees;

            if (automatedMarketMakerPairs[to]) { //sell
                tRewards = amount / 25;
                tBurn = amount / 25;
                tRemainingFees = amount * 2 / 25;
                tokensForLiquidity += tRemainingFees / 4;
                tokensForOps += tRemainingFees * 3 / 8;
                tokensForMarketing += tRemainingFees / 4;
                tokensForFarmRewards += tRemainingFees / 8;

            } else if (automatedMarketMakerPairs[from]) { //buy
                tRewards = amount * 3 / 100;
                tBurn = amount * 3 / 100;
                tRemainingFees = amount * 3 / 50;
                tokensForLiquidity += tRemainingFees / 6;
                tokensForOps += tRemainingFees / 3;
                tokensForMarketing += tRemainingFees / 3;
                tokensForFarmRewards += tRemainingFees / 6;
            }

            if (tRemainingFees > 0) {

                //platform fees
                uint256 rRemainingFees = tRemainingFees * currentRate;
                _rOwned[address(brlFeeHandler)] += rRemainingFees;
                if(_isExcluded[address(brlFeeHandler)])
                    _tOwned[address(brlFeeHandler)] += tRemainingFees;

                emit Transfer(from, address(brlFeeHandler), tRemainingFees);

                //burn fee
                rBurn = tBurn * currentRate;
                _rTotal -= rBurn;
                _tTotal -= tBurn;

                emit Transfer(from, address(0xdead), tBurn);

                rRewards = tRewards * _getRate();
                _rTotal -= rRewards;
                _tFeeTotal += tRewards;
                rTransferAmount -= (rRewards + rBurn + rRemainingFees);
                tTransferAmount -= (tRewards + tBurn + tRemainingFees);

            }

        }

        _rOwned[from] -= rAmount;
        _rOwned[to] += rTransferAmount;

        if (_isExcluded[from]) {
            _tOwned[from] -= amount;
        }
        if (_isExcluded[to]) {
            _tOwned[to] += tTransferAmount;
        }

        emit Transfer(from, to, tTransferAmount);

    }

    function updateDelayTime(uint256 newNum) external onlyOwner{
        delay = newNum;
    }

    function setSwapAtAmount(uint256 amount) external onlyOwner {
        swapTokensAtAmount = amount;
    }

    function excludeFromMaxTransaction(address updAds, bool isEx) public onlyOwner {
        _isExcludedMaxTransactionAmount[updAds] = isEx;
    }

    function updateMarketingWallet(address newWallet) external onlyOwner {
        brlFeeHandler.updateMarketingWallet(newWallet);
    }

    function updateOpsWallet(address newWallet) external onlyOwner {
        brlFeeHandler.updateOpsWallet(newWallet);
    }

    function updateFarmWallet(address newWallet) external onlyOwner {
        brlFeeHandler.updateFarmWallet(newWallet);
    }

    function setAutomatedMarketMakerPair(address pair, bool value) public onlyOwner {
        if (pair == uniswapV2Pair) {
            revert InvalidPairAddress();
        }

        _setAutomatedMarketMakerPair(pair, value);
    }

    function _setAutomatedMarketMakerPair(address pair, bool value) private {
        automatedMarketMakerPairs[pair] = value;
        if (value) excludeFromReward(pair);
        else includeInReward(pair);
        _isExcludedMaxTransactionAmount[pair] = value;
        emit SetAutomatedMarketMakerPair(pair, value);
    }

    function updateFeeHandler(address newAddress) public onlyOwner {
        if (newAddress == address(brlFeeHandler)) {
            revert InvalidConfiguration();
        }

        BullRunFeeHandler newFeeHandler = BullRunFeeHandler(payable(newAddress));

        if (newFeeHandler.owner() != address(this)) {
            revert InvalidConfiguration();
        }

        excludeFromMaxTransaction(address(newFeeHandler), true);
        excludeFromFees(address(newFeeHandler));

        brlFeeHandler = newFeeHandler;

        emit UpdateFeeHandler(newAddress, address(brlFeeHandler));
    }

}

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