// SPDX-License-Identifier: MIT

/*


╲ ╱ ╭───── ╭───── │ │
╲ ╱ │ │ │ │
│ │───── ╰─────╮ │ │
│ │ │ │ │
│ ╰───── ──────╯ │ ╰───────


YESIL TOKEN

Welcome to blockhain of your health

https://www.yesilhealth.com


*/

pragma solidity ^0.8.4;

interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
interface IERC20Metadata is IERC20 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
}
abstract contract Context {
function _msgSender() internal view virtual returns (address) {return msg.sender;}
function _msgData() internal view virtual returns (bytes calldata) {this; return msg.data;}
}
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {return a b;}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {return a - b;}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {return a * b;}
function div(uint256 a, uint256 b) internal pure returns (uint256) {return a / b;}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {return a % b;}
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
unchecked { require(b <= a, errorMessage); return a - b; }
}
}
library Address {
function isContract(address account) internal view returns (bool) { uint256 size; assembly { size := extcodesize(account) } return size > 0;}
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
function functionCall(address target, bytes memory data) internal returns (bytes memory) {return functionCall(target, data, "Address: low-level call failed");}
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {return functionCallWithValue(target, data, 0, errorMessage);}
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {return functionCallWithValue(target, data, value, "Address: low-level call with value failed");}
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) { return returndata; } else {
if (returndata.length > 0) {
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {revert(errorMessage);}
}
}
}
abstract contract 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;
}
}
abstract contract Manageable is Context {
address private _manager;
event ManagementTransferred(address indexed previousManager, address indexed newManager);
constructor(){
address msgSender = _msgSender();
_manager = msgSender;
emit ManagementTransferred(address(0), msgSender);
}
function manager() public view returns(address){ return _manager; }
modifier onlyManager(){
require(_manager == _msgSender(), "Manageable: caller is not the manager");
_;
}
function transferManagement(address newManager) external virtual onlyManager {
emit ManagementTransferred(_manager, newManager);
_manager = newManager;
}
}
interface IPancakeV2Factory {
event PairCreated(address indexed token0, address indexed token1, address pair, uint);
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IPancakeV2Router {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}




abstract contract Tokenomics is Manageable {

using SafeMath for uint256;

// --------------------- Token Settings ------------------- //

string internal constant NAME = "YESIL";
string internal constant SYMBOL = "YESIL";

uint16 internal constant FEES_DIVISOR = 10**3;
uint8 internal constant DECIMALS = 9;
uint256 internal constant ZEROES = 10**DECIMALS;

uint256 private constant MAX = ~uint256(0);
uint256 internal constant TOTAL_SUPPLY = 1000000000 * ZEROES;
uint256 internal _reflectedSupply = (MAX - (MAX % TOTAL_SUPPLY));

/**
* @dev Set the maximum transaction amount allowed in a transfer.
*
*/
uint256 public maxTransactionAmount = TOTAL_SUPPLY / 1;

/**
* @dev Set the maximum allowed balance in a wallet.
*
*/
uint256 internal maxWalletBalance = TOTAL_SUPPLY / 1;

/**
* @dev Set the number of tokens to swap and add to liquidity.
*
* Whenever the contract's balance reaches this number of tokens, swap & liquify will be
* executed in the very next transfer (via the `_beforeTokenTransfer`)
*
* If the `FeeType.Liquidity` is enabled in `FeesSettings`, the given % of each transaction will be first
* sent to the contract address. Once the contract's balance reaches `numberOfTokensToSwapToLiquidity` the
* `swapAndLiquify` of `Liquifier` will be executed. Half of the tokens will be swapped for ETH
* (or BNB on BSC) and together with the other half converted into a Token-ETH/Token-BNB LP Token.
*
* See: `Liquifier`
*/
uint256 public numberOfTokensToSwapToLiquidity = TOTAL_SUPPLY / 10000; // 0.01% of the total supply



// --------------------- YESIL Fees Settings ------------------- //

address internal projectAddress = 0xd59bB8bd72281256c8FC8b41d04ed3116940ED24;
address internal burnAddress = 0x0000000000000000000000000000000000000000;


enum FeeType { Antiwhale, Burn, Liquidity, Rfi, External, ExternalToETH }
struct Fee {
FeeType name;
uint256 value;
address recipient;
uint256 total;
}

Fee[] internal fees;
uint256 internal sumOfFees;


constructor() {
_addFees();
}

function _addFee(FeeType name, uint256 value, address recipient) private {
fees.push( Fee(name, value, recipient, 0 ) );
sumOfFees = value;
}



function _addFees() private {


_addFee(FeeType.Rfi, 30, address(this) );

_addFee(FeeType.Burn, 10, burnAddress );
_addFee(FeeType.Liquidity, 30, address(this) );
_addFee(FeeType.ExternalToETH, 30, projectAddress );
}



function _getFeesCount() internal view returns (uint256){ return fees.length; }

function _getFeeStruct(uint256 index) private view returns(Fee storage){
require( index >= 0 && index < fees.length, "FeesSettings._getFeeStruct: Fee index out of bounds");
return fees[index];
}
function _getFee(uint256 index) internal view returns (FeeType, uint256, address, uint256){
Fee memory fee = _getFeeStruct(index);
return ( fee.name, fee.value, fee.recipient, fee.total );
}
function _addFeeCollectedAmount(uint256 index, uint256 amount) internal {
Fee storage fee = _getFeeStruct(index);
fee.total = fee.total.add(amount);
}

function getCollectedFeeTotal(uint256 index) internal view returns (uint256){
Fee memory fee = _getFeeStruct(index);
return fee.total;
}

function setTokenSwapThreshold(uint256 tokenSwapThreshold) external onlyManager {
numberOfTokensToSwapToLiquidity = tokenSwapThreshold;
}
function setMaxTxAmount(uint256 _maxTransactionAmount) external onlyManager {
maxTransactionAmount = _maxTransactionAmount;
}
function setMaxWalletBalance(uint256 _maxWalletBalance) external onlyManager {
maxWalletBalance = _maxWalletBalance;
}

}

abstract contract Disablefee is Manageable {
bool internal isFeeDisabled;
function setFeeDisabled(bool value) external onlyManager {
isFeeDisabled = value;
}
}

abstract contract BaseRfiToken is IERC20, IERC20Metadata, Ownable, Disablefee, Tokenomics {

using SafeMath for uint256;
using Address for address;

mapping (address => uint256) internal _reflectedBalances;
mapping (address => uint256) internal _balances;
mapping (address => mapping (address => uint256)) internal _allowances;

mapping (address => bool) internal _isExcludedFromFee;
mapping (address => bool) internal _isExcludedFromRewards;
address[] private _excluded;

constructor(){

_reflectedBalances[owner()] = _reflectedSupply;

// exclude owner and this contract from fee
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;

// exclude the owner and this contract from rewards
_exclude(owner());
_exclude(address(this));

emit Transfer(address(0), owner(), TOTAL_SUPPLY);

}

/** Functions required by IERC20Metadat **/
function name() external pure override returns (string memory) { return NAME; }
function symbol() external pure override returns (string memory) { return SYMBOL; }
function decimals() external pure override returns (uint8) { return DECIMALS; }

/** Functions required by IERC20Metadat - END **/
/** Functions required by IERC20 **/
function totalSupply() external pure override returns (uint256) {
return TOTAL_SUPPLY;
}

function balanceOf(address account) public view override returns (uint256){
if (_isExcludedFromRewards[account]) return _balances[account];
return tokenFromReflection(_reflectedBalances[account]);
}

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

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

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

function transferFrom(address sender, address recipient, uint256 amount) external override returns (bool){
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/** Functions required by IERC20 - END **/


function burn(uint256 amount) external {

address sender = _msgSender();
require(sender != address(0), "BaseRfiToken: burn from the zero address");
require(sender != address(burnAddress), "BaseRfiToken: burn from the burn address");

uint256 balance = balanceOf(sender);
require(balance >= amount, "BaseRfiToken: burn amount exceeds balance");

uint256 reflectedAmount = amount.mul(_getCurrentRate());

// remove the amount from the sender's balance first
_reflectedBalances[sender] = _reflectedBalances[sender].sub(reflectedAmount);
if (_isExcludedFromRewards[sender])
_balances[sender] = _balances[sender].sub(amount);

_burnTokens( sender, amount, reflectedAmount );
}

/**
* @dev "Soft" burns the specified amount of tokens by sending them
* to the burn address
*/
function _burnTokens(address sender, uint256 tBurn, uint256 rBurn) internal {

/**
* @dev Do not reduce _totalSupply and/or _reflectedSupply. (soft) burning by sending
* tokens to the burn address (which should be excluded from rewards) is sufficient
* in RFI
*/
_reflectedBalances[burnAddress] = _reflectedBalances[burnAddress].add(rBurn);
if (_isExcludedFromRewards[burnAddress])
_balances[burnAddress] = _balances[burnAddress].add(tBurn);

/**
* @dev Emit the event so that the burn address balance is updated (on bscscan)
*/
emit Transfer(sender, burnAddress, tBurn);
}

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) external view returns (bool) {
return _isExcludedFromRewards[account];
}

/**
* @dev Calculates and returns the reflected amount for the given amount with or without
* the transfer fees (deductTransferFee true/false)
*/
function reflectionFromToken(uint256 tAmount, bool deductTransferFee) external view returns(uint256) {
require(tAmount <= TOTAL_SUPPLY, "Amount must be less than supply");
if (!deductTransferFee) {
(uint256 rAmount,,,,) = _getValues(tAmount,0);
return rAmount;
} else {
(,uint256 rTransferAmount,,,) = _getValues(tAmount,_getSumOfFees(_msgSender(), tAmount));
return rTransferAmount;
}
}

/**
* @dev Calculates and returns the amount of tokens corresponding to the given reflected amount.
*/
function tokenFromReflection(uint256 rAmount) internal view returns(uint256) {
require(rAmount <= _reflectedSupply, "Amount must be less than total reflections");
uint256 currentRate = _getCurrentRate();
return rAmount.div(currentRate);
}

function excludeFromReward(address account) external onlyOwner() {
require(!_isExcludedFromRewards[account], "Account is not included");
_exclude(account);
}


function _exclude(address account) internal {
if(_reflectedBalances[account] > 0) {
_balances[account] = tokenFromReflection(_reflectedBalances[account]);
}
_isExcludedFromRewards[account] = true;
_excluded.push(account);
}

function includeInReward(address account) external onlyOwner() {
require(_isExcludedFromRewards[account], "Account is not excluded");
for (uint256 i = 0; i < _excluded.length; i ) {
if (_excluded[i] == account) {
_excluded[i] = _excluded[_excluded.length - 1];
_balances[account] = 0;
_isExcludedFromRewards[account] = false;
_excluded.pop();
break;
}
}
}

function setExcludedFromFee(address account, bool value) external onlyOwner { _isExcludedFromFee[account] = value; }
function isExcludedFromFee(address account) public view returns(bool) { return _isExcludedFromFee[account]; }

function _approve(address owner, address spender, uint256 amount) internal {
require(owner != address(0), "BaseRfiToken: approve from the zero address");
require(spender != address(0), "BaseRfiToken: approve to the zero address");

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

/**
*/
function _isUnlimitedSender(address account) internal view returns(bool){
// the owner should be the only whitelisted sender
return (account == owner());
}
/**
*/
function _isUnlimitedRecipient(address account) internal view returns(bool){
// the owner should be a white-listed recipient
// and anyone should be able to burn as many tokens as
// he/she wants
return (account == owner() || account == burnAddress);
}

function _transfer(address sender, address recipient, uint256 amount) private {
require(sender != address(0), "BaseRfiToken: transfer from the zero address");
require(recipient != address(0), "BaseRfiToken: transfer to the zero address");
require(sender != address(burnAddress), "BaseRfiToken: transfer from the burn address");
require(amount > 0, "Transfer amount must be greater than zero");

// indicates whether or not feee should be deducted from the transfer
bool takeFee = true;

if ( isFeeDisabled ){ takeFee = false; }
else {
/**
* Check the amount is within the max allowed limit as long as a
* unlimited sender/recepient is not involved in the transaction
*/
if ( amount > maxTransactionAmount && !_isUnlimitedSender(sender) && !_isUnlimitedRecipient(recipient) ){
revert("Transfer amount exceeds the maxTxAmount.");
}
/**
* The pair needs to excluded from the max wallet balance check;
* selling tokens is sending them back to the pair (without this
* check, selling tokens would not work if the pair's balance
* was over the allowed max)
*
* Note: This does NOT take into account the fees which will be deducted
* from the amount. As such it could be a bit confusing
*/
if ( maxWalletBalance > 0 && !_isUnlimitedSender(sender) && !_isUnlimitedRecipient(recipient) && !_isV2Pair(recipient) ){
uint256 recipientBalance = balanceOf(recipient);
require(recipientBalance amount <= maxWalletBalance, "New balance would exceed the maxWalletBalance");
}
}

// if any account belongs to _isExcludedFromFee account then remove the fee
if(_isExcludedFromFee[sender] || _isExcludedFromFee[recipient]){ takeFee = false; }

_beforeTokenTransfer(sender, recipient, amount, takeFee);
_transferTokens(sender, recipient, amount, takeFee);

}

function _transferTokens(address sender, address recipient, uint256 amount, bool takeFee) private {

uint256 sumOfFees = _getSumOfFees(sender, amount);
if ( !takeFee ){ sumOfFees = 0; }

(uint256 rAmount, uint256 rTransferAmount, uint256 tAmount, uint256 tTransferAmount, uint256 currentRate ) = _getValues(amount, sumOfFees);

/**
* Sender's and Recipient's reflected balances must be always updated regardless of
* whether they are excluded from rewards or not.
*/
_reflectedBalances[sender] = _reflectedBalances[sender].sub(rAmount);
_reflectedBalances[recipient] = _reflectedBalances[recipient].add(rTransferAmount);

/**
* Update the true/nominal balances for excluded accounts
*/
if (_isExcludedFromRewards[sender]){ _balances[sender] = _balances[sender].sub(tAmount); }
if (_isExcludedFromRewards[recipient] ){ _balances[recipient] = _balances[recipient].add(tTransferAmount); }

_takeFees( amount, currentRate, sumOfFees );
emit Transfer(sender, recipient, tTransferAmount);
}

function _takeFees(uint256 amount, uint256 currentRate, uint256 sumOfFees ) private {
if ( sumOfFees > 0 && !isFeeDisabled ){
_takeTransactionFees(amount, currentRate);
}
}

function _getValues(uint256 tAmount, uint256 feesSum) internal view returns (uint256, uint256, uint256, uint256, uint256) {

uint256 tTotalFees = tAmount.mul(feesSum).div(FEES_DIVISOR);
uint256 tTransferAmount = tAmount.sub(tTotalFees);
uint256 currentRate = _getCurrentRate();
uint256 rAmount = tAmount.mul(currentRate);
uint256 rTotalFees = tTotalFees.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rTotalFees);

return (rAmount, rTransferAmount, tAmount, tTransferAmount, currentRate);
}

function _getCurrentRate() internal view returns(uint256) {
(uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
return rSupply.div(tSupply);
}

function _getCurrentSupply() internal view returns(uint256, uint256) {
uint256 rSupply = _reflectedSupply;
uint256 tSupply = TOTAL_SUPPLY;

/**
* The code below removes balances of addresses excluded from rewards from
* rSupply and tSupply, which effectively increases the % of transaction fees
* delivered to non-excluded holders
*/
for (uint256 i = 0; i < _excluded.length; i ) {
if (_reflectedBalances[_excluded[i]] > rSupply || _balances[_excluded[i]] > tSupply) return (_reflectedSupply, TOTAL_SUPPLY);
rSupply = rSupply.sub(_reflectedBalances[_excluded[i]]);
tSupply = tSupply.sub(_balances[_excluded[i]]);
}
if (tSupply == 0 || rSupply < _reflectedSupply.div(TOTAL_SUPPLY)) return (_reflectedSupply, TOTAL_SUPPLY);
return (rSupply, tSupply);
}

/**
* @dev Hook that is called before any transfer of tokens.
*/
function _beforeTokenTransfer(address sender, address recipient, uint256 amount, bool takeFee) internal virtual;

function _getSumOfFees(address sender, uint256 amount) internal view virtual returns (uint256);

function _isV2Pair(address account) internal view virtual returns(bool);

function _redistribute(uint256 amount, uint256 currentRate, uint256 fee, uint256 index) internal {
uint256 tFee = amount.mul(fee).div(FEES_DIVISOR);
uint256 rFee = tFee.mul(currentRate);

_reflectedSupply = _reflectedSupply.sub(rFee);
_addFeeCollectedAmount(index, tFee);
}

function _takeTransactionFees(uint256 amount, uint256 currentRate) internal virtual;
}

abstract contract Liquifier is Ownable, Manageable {

using SafeMath for uint256;

uint256 private withdrawableBalance;

enum Env {Testnet, MainnetV1, MainnetV2}
Env private _env;

// PancakeSwap V1
address private _mainnetRouterV1Address = 0x05fF2B0DB69458A0750badebc4f9e13aDd608C7F;
// PancakeSwap V2
address private _mainnetRouterV2Address = 0x10ED43C718714eb63d5aA57B78B54704E256024E;
// Testnet
// address private _testnetRouterAddress = 0x9Ac64Cc6e4415144C455BD8E4837Fea55603e5c3;
address private _testnetRouterAddress = 0x9Ac64Cc6e4415144C455BD8E4837Fea55603e5c3;

IPancakeV2Router internal _router;
address internal _pair;

bool private inSwapAndLiquify;
bool private swapAndLiquifyEnabled = true;

uint256 private maxTransactionAmount;
uint256 private numberOfTokensToSwapToLiquidity;

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

event RouterSet(address indexed router);
event SwapAndLiquify(uint256 tokensSwapped, uint256 ethReceived, uint256 tokensIntoLiquidity);
event SwapAndLiquifyEnabledUpdated(bool enabled);
event LiquidityAdded(uint256 tokenAmountSent, uint256 ethAmountSent, uint256 liquidity);

receive() external payable {}

function initializeLiquiditySwapper(Env env, uint256 maxTx, uint256 liquifyAmount) internal {
_env = env;
if (_env == Env.MainnetV1){ _setRouterAddress(_mainnetRouterV1Address); }
else if (_env == Env.MainnetV2){ _setRouterAddress(_mainnetRouterV2Address); }
else /*(_env == Env.Testnet)*/{ _setRouterAddress(_testnetRouterAddress); }

maxTransactionAmount = maxTx;
numberOfTokensToSwapToLiquidity = liquifyAmount;

}



function liquify(uint256 contractTokenBalance, address sender) internal {

if (contractTokenBalance >= maxTransactionAmount) contractTokenBalance = maxTransactionAmount;

bool isOverRequiredTokenBalance = ( contractTokenBalance >= numberOfTokensToSwapToLiquidity );

if ( isOverRequiredTokenBalance && swapAndLiquifyEnabled && !inSwapAndLiquify && (sender != _pair) ){
_swapAndLiquify(contractTokenBalance);
}

}



function _setRouterAddress(address router) private {
IPancakeV2Router _newPancakeRouter = IPancakeV2Router(router);
_pair = IPancakeV2Factory(_newPancakeRouter.factory()).createPair(address(this), _newPancakeRouter.WETH());
_router = _newPancakeRouter;
emit RouterSet(router);
}

function _swapAndLiquify(uint256 amount) private lockTheSwap {


uint256 half = amount.div(2);
uint256 otherHalf = amount.sub(half);


uint256 initialBalance = address(this).balance;

_swapTokensForEth(half);

uint256 newBalance = address(this).balance.sub(initialBalance);

_addLiquidity(otherHalf, newBalance);

emit SwapAndLiquify(half, newBalance, otherHalf);
}

function _swapTokensForEth(uint256 tokenAmount) private {

address[] memory path = new address[](2);
path[0] = address(this);
path[1] = _router.WETH();

_approveDelegate(address(this), address(_router), tokenAmount);

_router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,

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

function _addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
_approveDelegate(address(this), address(_router), tokenAmount);

(uint256 tokenAmountSent, uint256 ethAmountSent, uint256 liquidity) = _router.addLiquidityETH{value: ethAmount}(
address(this),
tokenAmount,
0,
0,
owner(),
block.timestamp
);
withdrawableBalance = address(this).balance;
emit LiquidityAdded(tokenAmountSent, ethAmountSent, liquidity);
}



function setRouterAddress(address router) external onlyManager() {
_setRouterAddress(router);
}

function setSwapAndLiquifyEnabled(bool enabled) external onlyManager {
swapAndLiquifyEnabled = enabled;
emit SwapAndLiquifyEnabledUpdated(swapAndLiquifyEnabled);
}

function withdrawLockedEth(address payable recipient) external onlyManager(){
require(recipient != address(0), "Cannot withdraw the ETH balance to the zero address");
require(withdrawableBalance > 0, "The ETH balance must be greater than 0");

uint256 amount = withdrawableBalance;
withdrawableBalance = 0;
recipient.transfer(amount);
}

function _approveDelegate(address owner, address spender, uint256 amount) internal virtual;

}

abstract contract Antiwhale is Tokenomics {
function _getAntiwhaleFees(uint256, uint256) internal view returns (uint256){
return sumOfFees;
}
}
//////////////////////////////////////////////////////////////////////////

abstract contract YesilToken is BaseRfiToken, Liquifier, Antiwhale {

using SafeMath for uint256;

constructor(Env _env){

initializeLiquiditySwapper(_env, maxTransactionAmount, numberOfTokensToSwapToLiquidity);

_exclude(_pair);
_exclude(burnAddress);
}

function _isV2Pair(address account) internal view override returns(bool){
return (account == _pair);
}

function _getSumOfFees(address sender, uint256 amount) internal view override returns (uint256){
return _getAntiwhaleFees(balanceOf(sender), amount);
}

function _beforeTokenTransfer(address sender, address , uint256 , bool ) internal override {
if ( !isFeeDisabled ){
uint256 contractTokenBalance = balanceOf(address(this));
liquify( contractTokenBalance, sender );
}
}

function _takeTransactionFees(uint256 amount, uint256 currentRate) internal override {

if( isFeeDisabled ){ return; }

uint256 feesCount = _getFeesCount();
for (uint256 index = 0; index < feesCount; index ){
(FeeType name, uint256 value, address recipient,) = _getFee(index);
if ( value == 0 ) continue;

if ( name == FeeType.Rfi ){
_redistribute( amount, currentRate, value, index );
}
else if ( name == FeeType.Burn ){
_burn( amount, currentRate, value, index );
}
else if ( name == FeeType.ExternalToETH){
_takeFeeToETH( amount, currentRate, value, recipient, index );
}
else {
_takeFee( amount, currentRate, value, recipient, index );
}
}
}

function _burn(uint256 amount, uint256 currentRate, uint256 fee, uint256 index) private {
uint256 tBurn = amount.mul(fee).div(FEES_DIVISOR);
uint256 rBurn = tBurn.mul(currentRate);

_burnTokens(address(this), tBurn, rBurn);
_addFeeCollectedAmount(index, tBurn);
}

function _takeFee(uint256 amount, uint256 currentRate, uint256 fee, address recipient, uint256 index) private {

uint256 tAmount = amount.mul(fee).div(FEES_DIVISOR);
uint256 rAmount = tAmount.mul(currentRate);

_reflectedBalances[recipient] = _reflectedBalances[recipient].add(rAmount);
if(_isExcludedFromRewards[recipient])
_balances[recipient] = _balances[recipient].add(tAmount);

_addFeeCollectedAmount(index, tAmount);
}


function _takeFeeToETH(uint256 amount, uint256 currentRate, uint256 fee, address recipient, uint256 index) private {
_takeFee(amount, currentRate, fee, recipient, index);
}

function _approveDelegate(address owner, address spender, uint256 amount) internal override {
_approve(owner, spender, amount);
}
}

contract YesilTokenV1 is YesilToken{

constructor() YesilToken(Env.MainnetV2){
_approve(owner(),address(_router), ~uint256(0));
}
}