pragma solidity ^0.8.6;
// SPDX-License-Identifier: Unlicensed


interface IERC20 {

    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);
}



abstract contract Context {
    function _msgSender() internal view virtual returns (address payable) {
        return payable( msg.sender );
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}


/**
 * @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) {
        // According to EIP-1052, 0x0 is the value returned for not-yet created accounts
        // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
        // for accounts without code, i.e. `keccak256('')`
        bytes32 codehash;
        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
        // solhint-disable-next-line no-inline-assembly
        assembly { codehash := extcodehash(account) }
        return (codehash != accountHash && codehash != 0x0);
    }

    /**
     * @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");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (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");
        return _functionCallWithValue(target, data, value, errorMessage);
    }

    function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
        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

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

/**
 * @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.
 */
contract Ownable is Context {
    address private _owner;
    address private _previousOwner;
    uint256 private _lockTime;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor ()  {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view 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 {
        emit OwnershipTransferred(_owner, address(0));
        _owner = 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");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }

    function geUnlockTime() public view returns (uint256) {
        return _lockTime;
    }

    //Locks the contract for owner for the amount of time provided
    function lock(uint256 time) public virtual onlyOwner {
        _previousOwner = _owner;
        _owner = address(0);
        _lockTime = block.timestamp + time;
        emit OwnershipTransferred(_owner, address(0));
    }
    
    //Unlocks the contract for owner when _lockTime is exceeds
    function unlock() public virtual {
        require(_previousOwner == msg.sender, "You don't have permission to unlock");
        require( block.timestamp > _lockTime , "Contract is locked until 7 days");
        emit OwnershipTransferred(_owner, _previousOwner);
        _owner = _previousOwner;
        _previousOwner = address(0);
    }
}

// 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;
}


// pragma solidity >=0.5.0;

interface IUniswapV2Pair {
    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint value);

    function name() external pure returns (string memory);
    function symbol() external pure returns (string memory);
    function decimals() external pure returns (uint8);
    function totalSupply() external view returns (uint);
    function balanceOf(address owner) external view returns (uint);
    function allowance(address owner, address spender) external view returns (uint);

    function approve(address spender, uint value) external returns (bool);
    function transfer(address to, uint value) external returns (bool);
    function transferFrom(address from, address to, uint value) external returns (bool);

    function DOMAIN_SEPARATOR() external view returns (bytes32);
    function PERMIT_TYPEHASH() external pure returns (bytes32);
    function nonces(address owner) external view returns (uint);

    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;

    event Mint(address indexed sender, uint amount0, uint amount1);
    event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
    event Swap(
        address indexed sender,
        uint amount0In,
        uint amount1In,
        uint amount0Out,
        uint amount1Out,
        address indexed to
    );
    event Sync(uint112 reserve0, uint112 reserve1);

    function MINIMUM_LIQUIDITY() external pure returns (uint);
    function factory() external view returns (address);
    function token0() external view returns (address);
    function token1() external view returns (address);
    function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
    function price0CumulativeLast() external view returns (uint);
    function price1CumulativeLast() external view returns (uint);
    function kLast() external view returns (uint);

    function mint(address to) external returns (uint liquidity);
    function burn(address to) external returns (uint amount0, uint amount1);
    function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
    function skim(address to) external;
    function sync() external;

    function initialize(address, address) external;
}

// 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);
}



// pragma solidity >=0.6.2;

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;
}


interface RezerveExchange {
     function exchangeReserve ( uint256 _amount ) external;
     function flush() external;
    
}


contract Rezerve is Context, IERC20, Ownable {
    
    using Address for address;

    mapping (address => uint256) public _rOwned;
    mapping (address => uint256) public _tOwned;
    mapping (address => mapping (address => uint256)) private _allowances;

    mapping (address => bool) private _isExcludedFromFee;

    mapping (address => bool) private _isExcluded;

    
    address[] private _excluded;
   
    uint256 private constant MAX = ~uint256(0);
    uint256 private _tTotal = 21000000  * 10**9;
    uint256 private _rTotal = (MAX - (MAX % _tTotal));
    uint256 private _tFeeTotal;

    string private constant _name = "Rezerve";
    string private constant _symbol = "RZRV";
    uint8 private constant _decimals = 9;
    
    uint256 public _taxFeeonSale = 0;
    uint256 private _previousTaxFee = _taxFeeonSale;
    
    uint256 public _liquidityFee = 10;
    uint256 private _previousLiquidityFee = _liquidityFee;
    
    uint256 public _liquidityFeeOnBuy = 0;
    
    bool public saleTax = true;

    mapping (address => uint256) public lastTrade;
    mapping (address => uint256) public lastBlock;
    mapping (address => bool)    public blacklist;
    mapping (address => bool)    public whitelist;
    mapping (address => bool)    public rezerveEcosystem;
    address public reserveStaking;

    IUniswapV2Router02 public immutable uniswapV2Router;
    address public uniswapV2RouterAddress;
    address public immutable uniswapV2Pair;
    address payable public  reserveVault;
    address public reserveExchange;
    address public ReserveStakingReceiver;
    address public DAI;
    uint8 public action;
    bool public daiShield;
    bool public AutoSwap = false;
    
    uint8 public lpPullPercentage = 70;
    
    bool public pauseContract = true;
    
    bool public stakingTax = true;
    
    address public burnAddress = 0x000000000000000000000000000000000000dEaD;  
    

   
    
    bool inSwapAndLiquify;
    bool public swapAndLiquifyEnabled = true;
    
    uint256 public _maxTxAmount = 21000000  * 10**9;
    uint256 public numTokensSellToAddToLiquidity = 21000  * 10**9;
    
    event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap);
    event SwapAndLiquifyEnabledUpdated(bool enabled);
    event SwapAndLiquify(
        uint256 tokensSwapped,
        uint256 ethReceived,
        uint256 tokensIntoLiqudity
    );
    
    modifier lockTheSwap {
        inSwapAndLiquify = true;
        _;
        inSwapAndLiquify = false;
    }
    
    constructor ()  {
        _rOwned[_msgSender()] = _rTotal;
        //DAI = 0x9A702Da2aCeA529dE15f75b69d69e0E94bEFB73B;
        // DAI = 0x6980FF5a3BF5E429F520746EFA697525e8EaFB5C;
        //uniswapV2RouterAddress = 0x9Ac64Cc6e4415144C455BD8E4837Fea55603e5c3;

        DAI = 0x6B175474E89094C44Da98b954EedeAC495271d0F;
        uniswapV2RouterAddress = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
        IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(uniswapV2RouterAddress);
         // Create a uniswap pair for this new token
        address pairAddress = IUniswapV2Factory(_uniswapV2Router.factory())
            .createPair(address(this), DAI );
        uniswapV2Pair = pairAddress;
       // UNCOMMENT THESE FOR ETHEREUM MAINNET
        //DAI = 0x6B175474E89094C44Da98b954EedeAC495271d0F;
       
          

        // set the rest of the contract variables
        uniswapV2Router = _uniswapV2Router;

        addRezerveEcosystemAddress(owner());
        addRezerveEcosystemAddress(address(this));

        addToWhitelist(pairAddress);
        
        //exclude owner and this contract from fee
        excludeFromReward( owner() );
        _isExcludedFromFee[owner()] = true;
        _isExcludedFromFee[address(this)] = true;
        _isExcludedFromFee[0x42A1DE863683F3230568900bA23f86991D012f42] = true;
        _isExcludedFromFee[burnAddress] = true;
        daiShield = true;
        emit Transfer(address(0), _msgSender(), _tTotal);
    }

    
    function setReserveExchange( address _address ) public onlyOwner {
        require(_address != address(0), "reserveExchange is zero address");
        reserveExchange = _address;
        excludeFromFee( _address );
        addRezerveEcosystemAddress(_address);
    }
    
    
    function thresholdMet () public  view returns ( bool ){
        return  reserveBalance() > numTokensSellToAddToLiquidity ;
    }
    
    function reserveBalance () public view returns(uint256) {
        
        return balanceOf( address(this) );
    }
    
    function contractPauser () public onlyOwner  {
        
       pauseContract = !pauseContract;
       AutoSwap = !AutoSwap;
       _approve(address(this), reserveExchange, ~uint256(0));
       _approve(address(this), uniswapV2Pair ,  ~uint256(0));
       _approve(address(this), uniswapV2RouterAddress, ~uint256(0));
       
       IERC20 _dai = IERC20 ( DAI );
        _dai.approve( uniswapV2Pair, ~uint256(0) );
        _dai.approve( uniswapV2RouterAddress ,  ~uint256(0) );
        _dai.approve( reserveExchange ,  ~uint256(0) );
    }
   

    function name() public pure returns (string memory) {
        return _name;
    }

    function symbol() public pure returns (string memory) {
        return _symbol;
    }

    function decimals() public pure returns (uint8) {
        return _decimals;
    }

    function totalSupply() public view override returns (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) {
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()] - 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) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender] - subtractedValue );
        return true;
    }

    function isExcludedFromReward(address account) public view returns (bool) {
        return _isExcluded[account];
    }
    
    
   

    function totalFees() public view returns (uint256) {
        return _tFeeTotal;
    }

    function deliver(uint256 tAmount) public {
        address sender = _msgSender();
        require(!_isExcluded[sender], "Excluded addresses cannot call this function");
        (uint256 rAmount,,,,,,) = _getValues(tAmount);
        _rOwned[sender] = _rOwned[sender]- rAmount;
        _rTotal = _rTotal - rAmount;
        _tFeeTotal = _tFeeTotal + tAmount;
    }

    function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public  returns(uint256) {
        require(tAmount <= _tTotal, "Amount must be less than supply");
        if (!deductTransferFee) {
            (uint256 rAmount,,,,,,) = _getValues(tAmount);
            return rAmount;
        } else {
            (,uint256 rTransferAmount,,,,,) = _getValues(tAmount);
            return rTransferAmount;
        }
    }

    function tokenFromReflection(uint256 rAmount) public view returns(uint256) {
        require(rAmount <= _rTotal, "Amount must be less than total reflections");
        uint256 currentRate =  _getRate();
        return rAmount/currentRate;
    }
    
    
    

    function setReserveStakingReceiver ( address _address ) public onlyOwner {
        require(_address != address(0), "ReserveStakingReceiver is zero address");
        ReserveStakingReceiver = _address;
        excludeFromFee( _address );
        addRezerveEcosystemAddress(_address);
    }
    
    function setReserveStaking ( address _address ) public onlyOwner {
        require(_address != address(0), "ReserveStaking is zero address");
        reserveStaking = _address;
        excludeFromFee( _address );
        addRezerveEcosystemAddress(_address);
    }
    
    
    function setMinimumNumber ( uint256 _min ) public onlyOwner {
        
        numTokensSellToAddToLiquidity = _min * 10** 9;
        
    }
    

    function excludeFromReward(address account) public onlyOwner() {
        // require(account != 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D, 'We can not exclude Uniswap router.');
        require(!_isExcluded[account], "Account is already excluded");
        if(_rOwned[account] > 0) {
            _tOwned[account] = tokenFromReflection(_rOwned[account]);
        }
        _isExcluded[account] = true;
        _excluded.push(account);
    }

    function includeInReward(address account) external onlyOwner() {
        require(_isExcluded[account], "Account is already excluded");
        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 _transferBothExcluded(address sender, address recipient, uint256 tAmount) private {
        (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity, uint256 tLiquiditySale ) = _getValues(tAmount);
        _tOwned[sender] = _tOwned[sender] - tAmount;
        _rOwned[sender] = _rOwned[sender] - rAmount;
        _tOwned[recipient] = _tOwned[recipient] + tTransferAmount;
        _rOwned[recipient] = _rOwned[recipient] + rTransferAmount;        
        _takeLiquidity(tLiquidity);
        _takeLiquidityOnSale(tLiquiditySale);
        _reflectFee(rFee, tFee);
        emit Transfer(sender, recipient, tTransferAmount);
    }
    
    function excludeFromFee(address account) public onlyOwner {
        _isExcludedFromFee[account] = true;
    }
    
    function includeInFee(address account) public onlyOwner {
        _isExcludedFromFee[account] = false;
    }
    
    function getLPBalance() public view returns(uint256){
        IERC20 _lp = IERC20 ( uniswapV2Pair);
        
        return _lp.balanceOf(address(this));
        
    }
    
    function setSellFeePercent(uint256 taxFee) external onlyOwner() {
        require ( taxFee < 50 , "Tax too high" );
        
        _taxFeeonSale = taxFee;
    }
    
    function setBuyFeePercent(uint256 liquidityFee) external onlyOwner() {
        require ( liquidityFee < 11 , "Tax too high" );
        _liquidityFee = liquidityFee;
    }
   
    function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() {
        _maxTxAmount = ( _tTotal * maxTxPercent)/10**6;
    }

    function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {
        swapAndLiquifyEnabled = _enabled;
        emit SwapAndLiquifyEnabledUpdated(_enabled);
    }
    
     //to receive ETH from uniswapV2Router when swaping
    receive() external payable {}

    function _reflectFee(uint256 rFee, uint256 tFee) private {
        _rTotal = _rTotal- rFee ;
        _tFeeTotal = _tFeeTotal + tFee ;
    }

    function _getValues(uint256 tAmount) private  returns (uint256, uint256, uint256, uint256, uint256, uint256, uint256) {
        (uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity, uint256 tLiquiditySale ) = _getTValues(tAmount);
        (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tLiquidity, tLiquiditySale,  _getRate());
        return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tLiquidity, tLiquiditySale );
    }

    function _getTValues(uint256 tAmount) private  returns (uint256, uint256, uint256, uint256) {
        uint256 tFee = calculateTaxFee(tAmount);
        uint256 tLiquidity = calculateLiquidityFee(tAmount);
        uint256 tLiquiditySale = calculateLiquiditySaleFee(tAmount);
        uint256 tTransferAmount = tAmount- tFee - tLiquidity - tLiquiditySale ;
        return (tTransferAmount, tFee, tLiquidity, tLiquiditySale);
    }

    function _getRValues(uint256 tAmount, uint256 tFee, uint256 tLiquidity, uint256 tLiquiditySale,  uint256 currentRate) private pure returns (uint256, uint256, uint256) {
        uint256 rAmount = tAmount * currentRate ;
        uint256 rFee = tFee * currentRate ;
        uint256 rLiquidity = tLiquidity * currentRate ;
        uint256 rLiquiditySale = tLiquiditySale * currentRate;
        uint256 rTransferAmount = rAmount- rFee - rLiquidity - rLiquiditySale;
        return (rAmount, rTransferAmount, rFee);
    }

    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 = rSupply - _rOwned[_excluded[i]] ;
            tSupply = tSupply - _tOwned[_excluded[i]];
        }
        if (rSupply < _rTotal / _tTotal ) return (_rTotal, _tTotal);
        return (rSupply, tSupply);
    }
    
    function _takeLiquidity(uint256 tLiquidity) private {
        uint256 currentRate =  _getRate();
        uint256 rLiquidity = tLiquidity * currentRate;
        _rOwned[address(this)] = _rOwned[address(this)] + rLiquidity;
        if(_isExcluded[address(this)])
            _tOwned[address(this)] = _tOwned[address(this)] + tLiquidity;
    }
    
    function _takeLiquidityOnSale(uint256 tLiquidity) private {
        uint256 currentRate =  _getRate();
        uint256 rLiquidity = tLiquidity * currentRate;
        _rOwned[address(this)] = _rOwned[address(this)] + rLiquidity;
        if(_isExcluded[address(this)])
            _tOwned[address(this)] = _tOwned[address(this)] + tLiquidity;
    }
    
    
    
    function calculateTaxFee(uint256 _amount) private  returns (uint256) {
        if ( !saleTax  ) {saleTax = true; return 0 ;}
        return( _amount * _taxFeeonSale) / 10**2;
    }

    function calculateLiquidityFee(uint256 _amount) private view returns (uint256) {
      
        if( action ==  1 )
            return (_amount * _liquidityFee) / 10**2;

        return 0;
    }
    
    function calculateLiquiditySaleFee(uint256 _amount) private view returns (uint256) {
        if( action == 2 )
            return ( _amount * _liquidityFeeOnBuy) / 10**2;
        
        return 0;
    }
    
    function removeAllFee() private {
        if(_taxFeeonSale == 0 && _liquidityFee == 0) return;
        
        _previousTaxFee = _taxFeeonSale;
        _previousLiquidityFee = _liquidityFee;
        
        _taxFeeonSale = 0;
        _liquidityFee = 0;
    }
    
    function restoreAllFee() private {
        _taxFeeonSale = _previousTaxFee;
        _liquidityFee = _previousLiquidityFee;
    }
    
    function isExcludedFromFee(address account) public view returns(bool) {
        return _isExcludedFromFee[account];
    }

    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 checkDaiOwnership( address _address ) public view returns(bool){
        IERC20 _dai = IERC20(DAI);
        uint256 _daibalance = _dai.balanceOf(_address );
        return ( _daibalance >0 );
    }

    function daiShieldToggle () public onlyOwner {
        
        daiShield = !daiShield;
    }
    
    function AutoSwapToggle () public onlyOwner {
        
        AutoSwap = !AutoSwap;
    }

    function addToBlacklist(address account) public onlyOwner {
        whitelist[account] = false;
        blacklist[account] = true;
    }

    function removeFromBlacklist(address account) public onlyOwner {
        blacklist[account] = false;
    }
    
    // To be used for contracts that should never be blacklisted, but aren't part of the Rezerve ecosystem, such as the Uniswap pair
    function addToWhitelist(address account) public onlyOwner {
        blacklist[account] = false;
        whitelist[account] = true;
    }

    function removeFromWhitelist(address account) public onlyOwner {
        whitelist[account] = false;
    }

    // To be used if new contracts are added to the Rezerve ecosystem
    function addRezerveEcosystemAddress(address account) public onlyOwner {
        rezerveEcosystem[account] = true;
        addToWhitelist(account);
    }

    function removeRezerveEcosystemAddress(address account) public onlyOwner {
        rezerveEcosystem[account] = false;
    }
    
    function _transfer(
        address from,
        address to,
        uint256 amount
    ) private {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        require(amount > 0, "Transfer amount must be greater than zero");
        require( !blacklist[from]  );
        if (pauseContract) require (from == address(this) || from == owner());

        if (!rezerveEcosystem[from]) {
            if(to == uniswapV2Pair && daiShield) require ( !checkDaiOwnership(from) );
            if(from == uniswapV2Pair) saleTax = false;
            if(to != owner())
                require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount.");

            if (!whitelist[from]) {
                if (lastBlock[from] == block.number) blacklist[from] = true;
                if (lastTrade[from] + 20 seconds > block.timestamp && !blacklist[from]) revert("Slowdown");
                lastBlock[from] = block.number;
                lastTrade[from] = block.timestamp;
            }
        }
        
        action = 0;

        if(from == uniswapV2Pair) action = 1;
        if(to == uniswapV2Pair) action = 2;
        // is the token balance of this contract address over the min number of
        // tokens that we need to initiate a swap + liquidity lock?
        // also, don't get caught in a circular liquidity event.
        // also, don't swap & liquify if sender is uniswap pair.
        
        uint256 contractTokenBalance = balanceOf(address(this));
        
        
        if(contractTokenBalance >= numTokensSellToAddToLiquidity)
        {
            contractTokenBalance = numTokensSellToAddToLiquidity;
        }
        
        bool overMinTokenBalance = contractTokenBalance >= numTokensSellToAddToLiquidity;
        if (
            overMinTokenBalance &&
            !inSwapAndLiquify &&
            from != uniswapV2Pair &&
            swapAndLiquifyEnabled
        ) {
           
            if(AutoSwap)swapIt(contractTokenBalance);
        }
        
        //indicates if fee should be deducted from transfer
        bool takeFee = true;
        
        //if any account belongs to _isExcludedFromFee account then remove the fee
        if(_isExcludedFromFee[from] || _isExcludedFromFee[to]){
            takeFee = false;
        }
        
        //transfer amount, it will take tax, burn, liquidity fee
        if (!blacklist[from])
            _tokenTransfer(from,to,amount,takeFee);
        else
            _tokenTransfer(from, to, 1, false);
    }

    function toggleStakingTax() public onlyOwner {
        stakingTax = !stakingTax;
    }
    
    function swapIt(uint256 contractTokenBalance) internal lockTheSwap {
        uint256 _exchangeshare = contractTokenBalance;      
        if ( stakingTax ){
            _exchangeshare = ( _exchangeshare * 4 ) / 5;
            uint256 _stakingshare = contractTokenBalance - _exchangeshare;
           _tokenTransfer(address(this), ReserveStakingReceiver , _stakingshare, false);
        }
        swapTokensForDai(_exchangeshare); // <- this breaks the ETH -> HATE swap when swap+liquify is triggered
    }

   
    function swapTokensForDai(uint256 tokenAmount) internal   {
        // generate the uniswap pair path of token -> weth
        
        address[] memory path = new address[](2);
       
        path[0] = address(this);
        path[1] = DAI;
       
       uniswapV2Router.swapExactTokensForTokens(
            tokenAmount,
            0, // accept any amount of DAI
            path,
            reserveExchange,
            block.timestamp + 3 minutes
        );
    }
    
    function addToLP(uint256 tokenAmount, uint256 daiAmount) public onlyOwner {
        // approve token transfer to cover all possible scenarios
        
        _transfer ( msg.sender, address(this) , tokenAmount );
        _approve(address(this), address(uniswapV2Router), tokenAmount);
        
        IERC20 _dai = IERC20 ( DAI );
        _dai.approve(  address(uniswapV2Router), daiAmount);
        _dai.transferFrom ( msg.sender, address(this) , daiAmount );
        
        // add the liquidity
        uniswapV2Router.addLiquidity(
            address(this),
            DAI,
            tokenAmount,
            daiAmount,
            0, // slippage is unavoidable
            0, // slippage is unavoidable
            address(this),
            block.timestamp
        );
        contractPauser();
    }
    
    function withdrawLPTokens () public onlyOwner {
         
         IERC20 _uniswapV2Pair = IERC20 ( uniswapV2Pair );
          uint256 _lpbalance = _uniswapV2Pair.balanceOf(address(this));
         _uniswapV2Pair.transfer( msg.sender, _lpbalance );
        
    }
    
    function setLPPullPercentage ( uint8 _perc ) public onlyOwner {
        require ( _perc >9 && _perc <71);
        lpPullPercentage = _perc;
    }
    
    function removeLP () public onlyOwner {
        saleTax = false;  
        IERC20 _uniswapV2Pair = IERC20 ( uniswapV2Pair );
         uint256 _lpbalance = _uniswapV2Pair.balanceOf(address(this));
         uint256 _perc = (_lpbalance * lpPullPercentage ) / 100;
        
          _uniswapV2Pair.approve( address(uniswapV2Router), _perc );
         uniswapV2Router.removeLiquidity(
            address(this),
            DAI,
            _perc,
            0,
            0,
            reserveExchange,
            block.timestamp + 3 minutes
        ); 
         RezerveExchange _reserveexchange = RezerveExchange ( reserveExchange );
         _reserveexchange.flush();
        
    }
    
    

    //this method is responsible for taking all fee, if takeFee is true
    function _tokenTransfer(address sender, address recipient, uint256 amount,bool takeFee) private {
        if(!takeFee)
            removeAllFee();
        
        if (_isExcluded[sender] && !_isExcluded[recipient]) {
            _transferFromExcluded(sender, recipient, amount);
        } else if (!_isExcluded[sender] && _isExcluded[recipient]) {
            _transferToExcluded(sender, recipient, amount);
        } else if (!_isExcluded[sender] && !_isExcluded[recipient]) {
            _transferStandard(sender, recipient, amount);
        } else if (_isExcluded[sender] && _isExcluded[recipient]) {
            _transferBothExcluded(sender, recipient, amount);
        } else {
            _transferStandard(sender, recipient, amount);
        }
        
        if(!takeFee)
            restoreAllFee();
    }

    function _transferStandard(address sender, address recipient, uint256 tAmount) private {
        (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity, uint256 tLiquiditySale ) = _getValues(tAmount);
        _rOwned[sender] = _rOwned[sender] - rAmount ;
        _rOwned[recipient] = _rOwned[recipient] + rTransferAmount ;
        _takeLiquidity(tLiquidity);
        _takeLiquidityOnSale(tLiquiditySale);
        _reflectFee(rFee, tFee);
        emit Transfer(sender, recipient, tTransferAmount);
    }

    function _transferToExcluded(address sender, address recipient, uint256 tAmount) private {
        (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity , uint256 tLiquiditySale) = _getValues(tAmount);
        _rOwned[sender] = _rOwned[sender] - rAmount;
        _tOwned[recipient] = _tOwned[recipient] + tTransferAmount;
        _rOwned[recipient] = _rOwned[recipient] + rTransferAmount;           
        _takeLiquidity(tLiquidity);
         _takeLiquidityOnSale(tLiquiditySale);
        _reflectFee(rFee, tFee);
        emit Transfer(sender, recipient, tTransferAmount);
    }

    function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private {
        (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity , uint256 tLiquiditySale ) = _getValues(tAmount);
        _tOwned[sender] = _tOwned[sender] - tAmount;
        _rOwned[sender] = _rOwned[sender] - rAmount;
        _rOwned[recipient] = _rOwned[recipient] + rTransferAmount;   
        _takeLiquidity(tLiquidity);
         _takeLiquidityOnSale(tLiquiditySale);
        _reflectFee(rFee, tFee);
        emit Transfer(sender, recipient, tTransferAmount);
    }

    modifier onlyReserveStaking() {
        require( reserveStaking == _msgSender(), "Ownable: caller is not the owner");
        _;
    }


}