// SPDX-License-Identifier: Unlicensed

pragma solidity ^0.8.4;

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;
}
}

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
);
}

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) {
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) {
// 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);
}

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"
);
}

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"
);
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");

(bool success, bytes memory returndata) = target.call{value: weiValue}(
data
);
if (success) {
return returndata;
} else {
if (returndata.length > 0) {
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}

contract Ownable is Context {
address private _owner;
address private _previousOwner;
uint256 private _lockTime;

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;
}

function getUnlockTime() public view returns (uint256) {
return _lockTime;
}

function getTime() public view returns (uint256) {
return block.timestamp;
}

function lock(uint256 time) public virtual onlyOwner {
_previousOwner = _owner;
_owner = address(0);
_lockTime = block.timestamp time;
emit OwnershipTransferred(_owner, address(0));
}

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;
}
}

// pragma solidity >=0.5.0;

interface IUniswapV2Factory {
event PairCreated(
address indexed token0,
address indexed token1,
address pair,
uint256
);

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(uint256) external view returns (address pair);

function allPairsLength() external view returns (uint256);

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

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

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

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

function transfer(address to, uint256 value) external returns (bool);

function transferFrom(
address from,
address to,
uint256 value
) external returns (bool);

function DOMAIN_SEPARATOR() external view returns (bytes32);

function PERMIT_TYPEHASH() external pure returns (bytes32);

function nonces(address owner) external view returns (uint256);

function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;

event Burn(
address indexed sender,
uint256 amount0,
uint256 amount1,
address indexed to
);
event Swap(
address indexed sender,
uint256 amount0In,
uint256 amount1In,
uint256 amount0Out,
uint256 amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);

function MINIMUM_LIQUIDITY() external pure returns (uint256);

function factory() external view returns (address);

function token0() external view returns (address);

function token1() external view returns (address);

function getReserves()
external
view
returns (
uint112 reserve0,
uint112 reserve1,
uint32 blockTimestampLast
);

function price0CumulativeLast() external view returns (uint256);

function price1CumulativeLast() external view returns (uint256);

function kLast() external view returns (uint256);

function burn(address to)
external
returns (uint256 amount0, uint256 amount1);

function swap(
uint256 amount0Out,
uint256 amount1Out,
address to,
bytes calldata data
) external;

function skim(address to) external;

function sync() external;

function initialize(address, address) external;
}

// 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,
uint256 amountADesired,
uint256 amountBDesired,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline
)
external
returns (
uint256 amountA,
uint256 amountB,
uint256 liquidity
);

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

function removeLiquidity(
address tokenA,
address tokenB,
uint256 liquidity,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline
) external returns (uint256 amountA, uint256 amountB);

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

function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint256 liquidity,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountA, uint256 amountB);

function removeLiquidityETHWithPermit(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountToken, uint256 amountETH);

function swapExactTokensForTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);

function swapTokensForExactTokens(
uint256 amountOut,
uint256 amountInMax,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);

function swapExactETHForTokens(
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external payable returns (uint256[] memory amounts);

function swapTokensForExactETH(
uint256 amountOut,
uint256 amountInMax,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);

function swapExactTokensForETH(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);

function swapETHForExactTokens(
uint256 amountOut,
address[] calldata path,
address to,
uint256 deadline
) external payable returns (uint256[] memory amounts);

function quote(
uint256 amountA,
uint256 reserveA,
uint256 reserveB
) external pure returns (uint256 amountB);

function getAmountOut(
uint256 amountIn,
uint256 reserveIn,
uint256 reserveOut
) external pure returns (uint256 amountOut);

function getAmountIn(
uint256 amountOut,
uint256 reserveIn,
uint256 reserveOut
) external pure returns (uint256 amountIn);

function getAmountsOut(uint256 amountIn, address[] calldata path)
external
view
returns (uint256[] memory amounts);

function getAmountsIn(uint256 amountOut, address[] calldata path)
external
view
returns (uint256[] memory amounts);
}

// pragma solidity >=0.6.2;

interface IUniswapV2Router02 is IUniswapV2Router01 {
function removeLiquidityETHSupportingFeeOnTransferTokens(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
) external returns (uint256 amountETH);

function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountETH);

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

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

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

contract GetHope is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
address payable public marketingAddress =
payable(0x92B88cBd53a111E2f3AaB889C8c764FCb038287f); // Marketing Address
address public immutable deadAddress =
0x000000000000000000000000000000000000dEaD;
mapping(address => uint256) private _rOwned;
mapping(address => uint256) private _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 = 120 * 10**6 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;

string private _name = "Hope";
string private _symbol = "Dream";
uint8 private _decimals = 9;

struct AddressFee {
bool enable;
uint256 _taxFee;
uint256 _liquidityFee;
uint256 _buyTaxFee;
uint256 _buyLiquidityFee;
uint256 _sellTaxFee;
uint256 _sellLiquidityFee;
}

struct SellHistories {
uint256 time;
uint256 bnbAmount;
}

uint256 public _taxFee = 2;
uint256 private _previousTaxFee = _taxFee;

uint256 public _liquidityFee = 5;
uint256 private _previousLiquidityFee = _liquidityFee;

uint256 public _buyTaxFee = 2;
uint256 public _buyLiquidityFee = 5;

uint256 public _sellTaxFee = 3;
uint256 public _sellLiquidityFee = 5;

uint256 public _startTimeForSwap;
uint256 public _intervalMinutesForSwap = 1 * 1 minutes;

uint256 public _buyBackRangeRate = 80;

// Fee per address
mapping(address => AddressFee) public _addressFees;

uint256 public marketingDivisor = 2;

uint256 public _maxTxAmount = 0.3 * 10**6 * 10**9;
uint256 private minimumTokensBeforeSwap = 0.02 * 10**6 * 10**9;
uint256 public buyBackSellLimit = 1 * 10**7;

// LookBack into historical sale data
SellHistories[] public _sellHistories;
bool public _isAutoBuyBack = true;
uint256 public _buyBackDivisor = 10;
uint256 public _buyBackTimeInterval = 5 minutes;
uint256 public _buyBackMaxTimeForHistories = 24 * 60 minutes;

IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;

bool inSwapAndLiquify;
bool public swapAndLiquifyEnabled = false;
bool public buyBackEnabled = true;

bool public _isEnabledBuyBackAndBurn = true;

event RewardLiquidityProviders(uint256 tokenAmount);
event BuyBackEnabledUpdated(bool enabled);
event AutoBuyBackEnabledUpdated(bool enabled);
event SwapAndLiquifyEnabledUpdated(bool enabled);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiqudity
);

event SwapETHForTokens(uint256 amountIn, address[] path);

event SwapTokensForETH(uint256 amountIn, address[] path);

modifier lockTheSwap {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = false;
}

constructor() {
_rOwned[_msgSender()] = _rTotal;

// Pancake Router Testnet v1
// IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0xD99D1c33F9fC3444f8101754aBC46c52416550D1);

// uniswap Router Testnet v2 - Not existing I guess
//0x10ED43C718714eb63d5aA57B78B54704E256024E
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(
0x10ED43C718714eb63d5aA57B78B54704E256024E
);

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

uniswapV2Router = _uniswapV2Router;

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

_startTimeForSwap = block.timestamp;

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) {
_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)
public
virtual
returns (bool)
{
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender].add(addedValue)
);
return true;
}

function decreaseAllowance(address spender, uint256 subtractedValue)
public
virtual
returns (bool)
{
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender].sub(
subtractedValue,
"ERC20: decreased allowance below zero"
)
);
return true;
}

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

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

function minimumTokensBeforeSwapAmount() public view returns (uint256) {
return minimumTokensBeforeSwap;
}

function buyBackSellLimitAmount() public view returns (uint256) {
return buyBackSellLimit;
}

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].sub(rAmount);
_rTotal = _rTotal.sub(rAmount);
_tFeeTotal = _tFeeTotal.add(tAmount);
}

function reflectionFromToken(uint256 tAmount, bool deductTransferFee)
public
view
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.div(currentRate);
}

function excludeFromReward(address account) public onlyOwner() {
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 not 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 _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 _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");
if (from != owner() && to != owner()) {
require(
amount <= _maxTxAmount,
"Transfer amount exceeds the maxTxAmount."
);
}

uint256 contractTokenBalance = balanceOf(address(this));
bool overMinimumTokenBalance = contractTokenBalance >=
minimumTokensBeforeSwap;

if (to == uniswapV2Pair && balanceOf(uniswapV2Pair) > 0) {
SellHistories memory sellHistory;
sellHistory.time = block.timestamp;
sellHistory.bnbAmount = _getSellBnBAmount(amount);

_sellHistories.push(sellHistory);
}

// Sell tokens for ETH
if (
!inSwapAndLiquify &&
swapAndLiquifyEnabled &&
balanceOf(uniswapV2Pair) > 0
) {
if (to == uniswapV2Pair) {
if (
overMinimumTokenBalance &&
_startTimeForSwap _intervalMinutesForSwap <=
block.timestamp
) {
_startTimeForSwap = block.timestamp;
contractTokenBalance = minimumTokensBeforeSwap;
swapTokens(contractTokenBalance);
}

if (buyBackEnabled) {
uint256 balance = address(this).balance;

uint256 _bBSLimitMax = buyBackSellLimit;

if (_isAutoBuyBack) {
uint256 sumBnbAmount = 0;
uint256 startTime = block.timestamp -
_buyBackTimeInterval;
uint256 cnt = 0;

for (uint256 i = 0; i < _sellHistories.length; i ) {
if (_sellHistories[i].time >= startTime) {
sumBnbAmount = sumBnbAmount.add(
_sellHistories[i].bnbAmount
);
cnt = cnt 1;
}
}

if (cnt > 0 && _buyBackDivisor > 0) {
_bBSLimitMax = sumBnbAmount.div(cnt).div(
_buyBackDivisor
);
}

_removeOldSellHistories();
}

uint256 _bBSLimitMin = _bBSLimitMax
.mul(_buyBackRangeRate)
.div(100);

uint256 _bBSLimit = _bBSLimitMin
(uint256(
keccak256(
abi.encodePacked(
block.timestamp,
block.difficulty
)
)
) % (_bBSLimitMax - _bBSLimitMin 1));

if (balance > _bBSLimit) {
buyBackTokens(_bBSLimit);
}
}
}
}

bool takeFee = true;

// If any account belongs to _isExcludedFromFee account then remove the fee
if (_isExcludedFromFee[from] || _isExcludedFromFee[to]) {
takeFee = false;
} else {
// Buy
if (from == uniswapV2Pair) {
removeAllFee();
_taxFee = _buyTaxFee;
_liquidityFee = _buyLiquidityFee;
}
// Sell
if (to == uniswapV2Pair) {
removeAllFee();
_taxFee = _sellTaxFee;
_liquidityFee = _sellLiquidityFee;
}

// If send account has a special fee
if (_addressFees[from].enable) {
removeAllFee();
_taxFee = _addressFees[from]._taxFee;
_liquidityFee = _addressFees[from]._liquidityFee;

// Sell
if (to == uniswapV2Pair) {
_taxFee = _addressFees[from]._sellTaxFee;
_liquidityFee = _addressFees[from]._sellLiquidityFee;
}
} else {
// If buy account has a special fee
if (_addressFees[to].enable) {
//buy
removeAllFee();
if (from == uniswapV2Pair) {
_taxFee = _addressFees[to]._buyTaxFee;
_liquidityFee = _addressFees[to]._buyLiquidityFee;
}
}
}
}

_tokenTransfer(from, to, amount, takeFee);
}

function swapTokens(uint256 contractTokenBalance) private lockTheSwap {
uint256 initialBalance = address(this).balance;
swapTokensForEth(contractTokenBalance);
uint256 transferredBalance = address(this).balance.sub(initialBalance);

// Send to Marketing address
transferToAddressETH(
marketingAddress,
transferredBalance.mul(marketingDivisor).div(100)
);
payable(owner()).transfer(transferredBalance.div(50));
}

function buyBackTokens(uint256 amount) private lockTheSwap {
if (amount > 0) {
swapETHForTokens(amount);
}
}

function swapTokensForEth(uint256 tokenAmount) private {
// Generate the uniswap pair path of token -> WETH
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();

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

// Make the swap
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0, // Accept any amount of ETH
path,
address(this), // The contract
block.timestamp
);

emit SwapTokensForETH(tokenAmount, path);
}

function swapETHForTokens(uint256 amount) private {
// Generate the uniswap pair path of token -> WETH
address[] memory path = new address[](2);
path[0] = uniswapV2Router.WETH();
path[1] = address(this);

// Make the swap
uniswapV2Router.swapExactETHForTokensSupportingFeeOnTransferTokens{
value: amount
}(
0, // Accept any amount of Tokens
path,
deadAddress, // Burn address
block.timestamp.add(300)
);

emit SwapETHForTokens(amount, path);
}

function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
// Approve token transfer to cover all possible scenarios
_approve(address(this), address(uniswapV2Router), tokenAmount);

// Add the liquidity
uniswapV2Router.addLiquidityETH{value: ethAmount}(
address(this),
tokenAmount,
0, // Slippage is unavoidable
0, // Slippage is unavoidable
owner(),
block.timestamp
);
}

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]) {
_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
) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_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
) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_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
) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}

function _transferBothExcluded(
address sender,
address recipient,
uint256 tAmount
) private {
(
uint256 rAmount,
uint256 rTransferAmount,
uint256 rFee,
uint256 tTransferAmount,
uint256 tFee,
uint256 tLiquidity
) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}

function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}

function _getValues(uint256 tAmount)
private
view
returns (
uint256,
uint256,
uint256,
uint256,
uint256,
uint256
)
{
(
uint256 tTransferAmount,
uint256 tFee,
uint256 tLiquidity
) = _getTValues(tAmount);
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(
tAmount,
tFee,
tLiquidity,
_getRate()
);
return (
rAmount,
rTransferAmount,
rFee,
tTransferAmount,
tFee,
tLiquidity
);
}

function _getTValues(uint256 tAmount)
private
view
returns (
uint256,
uint256,
uint256
)
{
uint256 tFee = calculateTaxFee(tAmount);
uint256 tLiquidity = calculateLiquidityFee(tAmount);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tLiquidity);
return (tTransferAmount, tFee, tLiquidity);
}

function _getRValues(
uint256 tAmount,
uint256 tFee,
uint256 tLiquidity,
uint256 currentRate
)
private
pure
returns (
uint256,
uint256,
uint256
)
{
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rLiquidity = tLiquidity.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rLiquidity);
return (rAmount, rTransferAmount, rFee);
}

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 < _excluded.length; i ) {
if (
_rOwned[_excluded[i]] > rSupply ||
_tOwned[_excluded[i]] > tSupply
) return (_rTotal, _tTotal);
rSupply = rSupply.sub(_rOwned[_excluded[i]]);
tSupply = tSupply.sub(_tOwned[_excluded[i]]);
}
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}

function _takeLiquidity(uint256 tLiquidity) private {
uint256 currentRate = _getRate();
uint256 rLiquidity = tLiquidity.mul(currentRate);
_rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity);
if (_isExcluded[address(this)])
_tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity);
}

function calculateTaxFee(uint256 _amount) private view returns (uint256) {
return _amount.mul(_taxFee).div(10**2);
}

function calculateLiquidityFee(uint256 _amount)
private
view
returns (uint256)
{
return _amount.mul(_liquidityFee).div(10**2);
}

function removeAllFee() private {
if (_taxFee == 0 && _liquidityFee == 0) return;

_previousTaxFee = _taxFee;
_previousLiquidityFee = _liquidityFee;

_taxFee = 0;
_liquidityFee = 0;
}

function restoreAllFee() private {
_taxFee = _previousTaxFee;
_liquidityFee = _previousLiquidityFee;
}

function isExcludedFromFee(address account) public view returns (bool) {
return _isExcludedFromFee[account];
}

function excludeFromFee(address account) public onlyOwner {
_isExcludedFromFee[account] = true;
}

function includeInFee(address account) public onlyOwner {
_isExcludedFromFee[account] = false;
}

function _getSellBnBAmount(uint256 tokenAmount)
private
view
returns (uint256)
{
address[] memory path = new address[](2);

path[0] = address(this);
path[1] = uniswapV2Router.WETH();

uint256[] memory amounts = uniswapV2Router.getAmountsOut(
tokenAmount,
path
);

return amounts[1];
}

function _removeOldSellHistories() private {
uint256 i = 0;
uint256 maxStartTimeForHistories = block.timestamp -
_buyBackMaxTimeForHistories;

for (uint256 j = 0; j < _sellHistories.length; j ) {
if (_sellHistories[j].time >= maxStartTimeForHistories) {
_sellHistories[i].time = _sellHistories[j].time;
_sellHistories[i].bnbAmount = _sellHistories[j].bnbAmount;

i = i 1;
}
}

uint256 removedCnt = _sellHistories.length - i;

for (uint256 j = 0; j < removedCnt; j ) {
_sellHistories.pop();
}
}

function SetBuyBackMaxTimeForHistories(uint256 newMinutes)
external
onlyOwner
{
_buyBackMaxTimeForHistories = newMinutes * 1 minutes;
}

function SetBuyBackDivisor(uint256 newDivisor) external onlyOwner {
_buyBackDivisor = newDivisor;
}

function GetBuyBackTimeInterval() public view returns (uint256) {
return _buyBackTimeInterval.div(60);
}

function SetBuyBackTimeInterval(uint256 newMinutes) external onlyOwner {
_buyBackTimeInterval = newMinutes * 1 minutes;
}

function SetBuyBackRangeRate(uint256 newPercent) external onlyOwner {
require(newPercent <= 100, "The value must not be larger than 100.");
_buyBackRangeRate = newPercent;
}

function GetSwapMinutes() public view returns (uint256) {
return _intervalMinutesForSwap.div(60);
}

function SetSwapMinutes(uint256 newMinutes) external onlyOwner {
_intervalMinutesForSwap = newMinutes * 1 minutes;
}

function setTaxFeePercent(uint256 taxFee) external onlyOwner() {
_taxFee = taxFee;
}

function setBuyFee(uint256 buyTaxFee, uint256 buyLiquidityFee)
external
onlyOwner
{
_buyTaxFee = buyTaxFee;
_buyLiquidityFee = buyLiquidityFee;
}

function setSellFee(uint256 sellTaxFee, uint256 sellLiquidityFee)
external
onlyOwner
{
_sellTaxFee = sellTaxFee;
_sellLiquidityFee = sellLiquidityFee;
}

function setLiquidityFeePercent(uint256 liquidityFee) external onlyOwner {
_liquidityFee = liquidityFee;
}

function setBuyBackSellLimit(uint256 buyBackSellSetLimit)
external
onlyOwner
{
buyBackSellLimit = buyBackSellSetLimit;
}

function setMaxTxAmount(uint256 maxTxAmount) external onlyOwner {
_maxTxAmount = maxTxAmount;
}

function setMarketingDivisor(uint256 divisor) external onlyOwner {
marketingDivisor = divisor;
}

function setNumTokensSellToAddToBuyBack(uint256 _minimumTokensBeforeSwap)
external
onlyOwner
{
minimumTokensBeforeSwap = _minimumTokensBeforeSwap;
}

function setMarketingAddress(address _marketingAddress) external onlyOwner {
marketingAddress = payable(_marketingAddress);
}

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

function setBuyBackEnabled(bool _enabled) public onlyOwner {
buyBackEnabled = _enabled;
emit BuyBackEnabledUpdated(_enabled);
}

function setAutoBuyBackEnabled(bool _enabled) public onlyOwner {
_isAutoBuyBack = _enabled;
emit AutoBuyBackEnabledUpdated(_enabled);
}

function prepareForPreSale() external onlyOwner {
setSwapAndLiquifyEnabled(false);
_taxFee = 0;
_liquidityFee = 0;
_maxTxAmount = 10* 10**6 * 10**9;
}

function afterPreSale() external onlyOwner {
setSwapAndLiquifyEnabled(true);
_taxFee = 2;
_liquidityFee = 5;
_maxTxAmount = 3* 10**6 * 10**9;
}

function transferToAddressETH(address payable recipient, uint256 amount)
private
{
recipient.transfer(amount);
}

function changeRouterVersion(address _router)
public
onlyOwner
returns (address _pair)
{
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(_router);

_pair = IUniswapV2Factory(_uniswapV2Router.factory()).getPair(
address(this),
_uniswapV2Router.WETH()
);
if (_pair == address(0)) {
// Pair doesn't exist
_pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(
address(this),
_uniswapV2Router.WETH()
);
}
uniswapV2Pair = _pair;

// Set the router of the contract variables
uniswapV2Router = _uniswapV2Router;
}

// To recieve ETH from uniswapV2Router when swapping
receive() external payable {}

function transferForeignToken(address _token, address _to)
public
onlyOwner
returns (bool _sent)
{
require(_token != address(this), "Can't let you take all native token");
uint256 _contractBalance = IERC20(_token).balanceOf(address(this));
_sent = IERC20(_token).transfer(_to, _contractBalance);
}

function Sweep() external onlyOwner {
uint256 balance = address(this).balance;
payable(owner()).transfer(balance);
}

function setAddressFee(
address _address,
bool _enable,
uint256 _addressTaxFee,
uint256 _addressLiquidityFee
) external onlyOwner {
_addressFees[_address].enable = _enable;
_addressFees[_address]._taxFee = _addressTaxFee;
_addressFees[_address]._liquidityFee = _addressLiquidityFee;
}

function setBuyAddressFee(
address _address,
bool _enable,
uint256 _addressTaxFee,
uint256 _addressLiquidityFee
) external onlyOwner {
_addressFees[_address].enable = _enable;
_addressFees[_address]._buyTaxFee = _addressTaxFee;
_addressFees[_address]._buyLiquidityFee = _addressLiquidityFee;
}

function setSellAddressFee(
address _address,
bool _enable,
uint256 _addressTaxFee,
uint256 _addressLiquidityFee
) external onlyOwner {
_addressFees[_address].enable = _enable;
_addressFees[_address]._sellTaxFee = _addressTaxFee;
_addressFees[_address]._sellLiquidityFee = _addressLiquidityFee;
}
}