/**


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*/

// SPDX-License-Identifier: Unlicensed

pragma solidity ^0.8.4;


library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* C U ON THE MOON
* 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);
}
}
}
}

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

function _msgData() internal view 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);

/**
* @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);
}

/**
* @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;

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;
}
}

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

interface IDEXRouter {
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 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 IDividendDistributor {
function changeToken(address newToken, bool forceChange) external;
function setDistributionCriteria(uint256 _minPeriod, uint256 _minDistribution) external;
function setShare(address shareholder, uint256 amount) external;
function deposit() external payable;
function process(uint256 gas) external;
function claimDividend(address shareholder) external;
function checkUnpaidDividends(address shareholder) external view returns (uint256);
function checkTokenChangeProgress() external view returns (uint256 count, uint256 progress);
}

contract DividendDistributor is IDividendDistributor {

address _token;

struct Share {
uint256 amount;
uint256 totalExcluded;
uint256 totalRealised;
uint256 lastConversionNumerator;
uint256 lastConversionDivisor;
}

IERC20 TOKEN;
address WBNB;
IDEXRouter router;

address[] shareholders;
mapping (address => uint256) shareholderIndexes;
mapping (address => uint256) shareholderClaims;

mapping (address => Share) public shares;

uint256 public totalShares;
uint256 public totalDividends;
uint256 public totalDistributed;
uint256 public dividendsPerShare;
uint256 public dividendsPerShareAccuracyFactor = 10 ** 36;
uint256 public tokenConversionNumerator;
uint256 public tokenConversionDivisor;
uint256 public tokenConversionCount;
uint256 public tokenConversionProgress;

uint256 public minPeriod = 1 hours;
uint256 public minDistribution = 1 * (10 ** 18);

uint256 currentIndex;

bool initialized;
modifier initialization() {
require(!initialized);
_;
initialized = true;
}

modifier onlyToken() {
require(msg.sender == _token); _;
}

constructor (address _router, address reflectToken, address _wbnb) {
router = IDEXRouter(_router);
TOKEN = IERC20(reflectToken);
WBNB = _wbnb;
_token = msg.sender;
}

function changeToken(address newToken, bool forceChange) external override onlyToken {
require(tokenConversionCount <= tokenConversionProgress || forceChange, "Previous conversion not complete.");
tokenConversionDivisor = TOKEN.balanceOf(address(this));
require(totalDividends == 0 || tokenConversionDivisor > 0, "Requires at least some of initial token to calculate convertion rate.");

if (tokenConversionDivisor > 0) {
TOKEN.approve(address(router), tokenConversionDivisor);

address[] memory path = new address[](3);
path[0] = address(TOKEN);
path[1] = WBNB;
path[2] = address(newToken);

router.swapExactTokensForTokensSupportingFeeOnTransferTokens(
tokenConversionDivisor,
0,
path,
address(this),
block.timestamp
);

tokenConversionCount = shareholders.length;
tokenConversionProgress = 0;
}

TOKEN = IERC20(newToken);

if (totalDividends > 0) {
tokenConversionNumerator = TOKEN.balanceOf(address(this));

totalDividends = (totalDividends * tokenConversionNumerator) / tokenConversionDivisor;
dividendsPerShare = (dividendsPerShare * tokenConversionNumerator) / tokenConversionDivisor;
totalDistributed = (totalDistributed * tokenConversionNumerator) / tokenConversionDivisor;
}
}

function checkTokenChangeProgress() external override view returns (uint256 count, uint256 progress) {
return (tokenConversionCount, tokenConversionProgress);
}

function processTokenChange(address shareholder) internal {
if(shares[shareholder].lastConversionNumerator != tokenConversionNumerator || shares[shareholder].lastConversionDivisor != tokenConversionDivisor) {
shares[shareholder].lastConversionNumerator = tokenConversionNumerator;
shares[shareholder].lastConversionDivisor = tokenConversionDivisor;
shares[shareholder].totalRealised = (shares[shareholder].totalRealised * tokenConversionNumerator) / tokenConversionDivisor;
shares[shareholder].totalExcluded = (shares[shareholder].totalExcluded * tokenConversionNumerator) / tokenConversionDivisor;
}
tokenConversionProgress ;
}

function setDistributionCriteria(uint256 _minPeriod, uint256 _minDistribution) external override onlyToken {
minPeriod = _minPeriod;
minDistribution = _minDistribution;
}

function setShare(address shareholder, uint256 amount) external override onlyToken {
if(shares[shareholder].amount > 0){
if(shares[shareholder].lastConversionNumerator != tokenConversionNumerator || shares[shareholder].lastConversionDivisor != tokenConversionDivisor) { processTokenChange(shareholder); }
distributeDividend(shareholder, getUnpaidEarnings(shareholder));
}

if(amount > 0 && shares[shareholder].amount == 0){
addShareholder(shareholder);
}else if(amount == 0 && shares[shareholder].amount > 0){
removeShareholder(shareholder);
}

totalShares = (totalShares - shares[shareholder].amount) amount;
shares[shareholder].amount = amount;
shares[shareholder].totalExcluded = getCumulativeDividends(shares[shareholder].amount);
}

function deposit() external payable override onlyToken {
uint256 balanceBefore = TOKEN.balanceOf(address(this));

address[] memory path = new address[](2);
path[0] = WBNB;
path[1] = address(TOKEN);

router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: msg.value}(
0,
path,
address(this),
block.timestamp
);

uint256 amount = TOKEN.balanceOf(address(this)) - balanceBefore;

totalDividends = totalDividends amount;
dividendsPerShare = dividendsPerShare ((dividendsPerShareAccuracyFactor * amount) / totalShares);
}

function process(uint256 gas) external override onlyToken {
uint256 shareholderCount = shareholders.length;

if(shareholderCount == 0) { return; }

uint256 gasUsed = 0;
uint256 gasLeft = gasleft();

uint256 iterations = 0;

while(gasUsed < gas && iterations < shareholderCount) {
if(currentIndex >= shareholderCount){
currentIndex = 0;
}

if(shares[shareholders[currentIndex]].lastConversionNumerator != tokenConversionNumerator || shares[shareholders[currentIndex]].lastConversionDivisor != tokenConversionDivisor)
processTokenChange(shareholders[currentIndex]);

uint256 unpaidEarnings = getUnpaidEarnings(shareholders[currentIndex]);
if(shouldDistribute(shareholders[currentIndex], unpaidEarnings)){
distributeDividend(shareholders[currentIndex], unpaidEarnings);
}

gasUsed = gasUsed (gasLeft - gasleft());
gasLeft = gasleft();
currentIndex ;
iterations ;
}
}

function shouldDistribute(address shareholder, uint256 unpaidEarnings) internal view returns (bool) {
return shareholderClaims[shareholder] minPeriod < block.timestamp
&& unpaidEarnings > minDistribution;
}

function distributeDividend(address shareholder, uint256 unpaidEarnings) internal {
if(shares[shareholder].amount == 0){ return; }

if(unpaidEarnings > 0){
totalDistributed = totalDistributed unpaidEarnings;
TOKEN.transfer(shareholder, unpaidEarnings);
shareholderClaims[shareholder] = block.timestamp;

shares[shareholder].totalRealised = shares[shareholder].totalRealised unpaidEarnings;
shares[shareholder].totalExcluded = getCumulativeDividends(shares[shareholder].amount);
}
}

function claimDividend(address shareholder) external override {
if(shares[shareholder].lastConversionNumerator != tokenConversionNumerator || shares[shareholder].lastConversionDivisor != tokenConversionDivisor) { processTokenChange(shareholder); }
distributeDividend(shareholder, getUnpaidEarnings(shareholder));
}

function getUnpaidEarnings(address shareholder) public view returns (uint256) {
if(shares[shareholder].amount == 0){ return 0; }

uint256 shareholderTotalDividends = getCumulativeDividends(shares[shareholder].amount);
uint256 shareholderTotalExcluded = shares[shareholder].totalExcluded;

if(shares[shareholder].lastConversionNumerator != tokenConversionNumerator || shares[shareholder].lastConversionDivisor != tokenConversionDivisor) {
shareholderTotalDividends = (shareholderTotalDividends * tokenConversionNumerator) / tokenConversionDivisor;
shareholderTotalExcluded = (shareholderTotalExcluded * tokenConversionNumerator) / tokenConversionDivisor;
}

if(shareholderTotalDividends <= shareholderTotalExcluded){ return 0; }

return shareholderTotalDividends - shareholderTotalExcluded;
}

function checkUnpaidDividends(address shareholder) external view override returns (uint256) {
return getUnpaidEarnings(shareholder);
}

function getCumulativeDividends(uint256 share) internal view returns (uint256) {
return (share * dividendsPerShare) / dividendsPerShareAccuracyFactor;
}

function addShareholder(address shareholder) internal {
shareholderIndexes[shareholder] = shareholders.length;
shareholders.push(shareholder);
}

function removeShareholder(address shareholder) internal {
if(shares[shareholder].lastConversionNumerator != tokenConversionNumerator || shares[shareholder].lastConversionDivisor != tokenConversionDivisor)
tokenConversionProgress ;

shareholders[shareholderIndexes[shareholder]] = shareholders[shareholders.length-1];
shareholderIndexes[shareholders[shareholders.length-1]] = shareholderIndexes[shareholder];
shareholders.pop();
}
}

contract RewardSwitchingToken is IERC20, Ownable {
using Address for address;

address WBNB;
address DEAD = 0x000000000000000000000000000000000000dEaD;
address ZERO = 0x0000000000000000000000000000000000000000;
IERC20 discountToken;
uint256 discountTokenMaxWallet;
address public currentlyServing;

string _name = "Switchy";
string _symbol = "Switchy";
uint8 constant _decimals = 9;

uint256 _totalSupply = 1000000 * (10 ** _decimals);
uint256 public _maxTxAmount = (_totalSupply * 1) / 100;
uint256 public _maxWalletSize = (_totalSupply * 2) / 100;

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

mapping (address => bool) isFeeExempt;
mapping (address => bool) isTxLimitExempt;
mapping (address => bool) isDividendExempt;
mapping (address => bool) airDropped;
mapping (address => uint256) airDropVestingPeriod;
mapping (address => uint256) lastSell;

uint256 liquidityFee = 400;
uint256 buybackFee = 0;
uint256 reflectionFee = 1100;
uint256 marketingFee = 300;
uint256 totalFee = 1800;
uint256 feeDenominator = 10000;
uint256 public _sellMultiplierNumerator = 120;
uint256 public _sellMultiplierDenominator = 100;
uint256 public _dumpProtectionNumerator = 50;
uint256 public _dumpProtectionDenominator = 100 * _maxTxAmount;
uint256 public _dumpProtectionThreshold = 3;
uint256 public _dumpProtectionTimer = 15 seconds;
uint256 public _discountNumerator = 80;
uint256 public _discountDenominator = 100;

address public autoLiquidityReceiver;
address payable public marketingFeeReceiver;

uint256 targetLiquidity = 25;
uint256 targetLiquidityDenominator = 100;

IDEXRouter public router;
address routerAddress = 0x10ED43C718714eb63d5aA57B78B54704E256024E;

address public pair;

uint256 public launchedAt;
uint256 public launchedTime;

uint256 buybackMultiplierTriggeredAt;
uint256 buybackMultiplierLength = 30 minutes;

bool public autoBuybackEnabled = false;
uint256 autoBuybackCap;
uint256 autoBuybackAccumulator;
uint256 autoBuybackAmount;
uint256 autoBuybackBlockPeriod;
uint256 autoBuybackBlockLast;

DividendDistributor distributor;
uint256 distributorGas = 500000;

bool public swapEnabled = true;
uint256 public swapThreshold = _totalSupply / 2000;
bool inSwap;
modifier swapping() { inSwap = true; _; inSwap = false; }

constructor () {
router = IDEXRouter(routerAddress);
WBNB = router.WETH();
currentlyServing = WBNB;
pair = IDEXFactory(router.factory()).createPair(WBNB, address(this));
_allowances[msg.sender][routerAddress] = type(uint256).max;
_allowances[address(this)][routerAddress] = type(uint256).max;

isFeeExempt[msg.sender] = true;
isTxLimitExempt[address(this)] = true;
isTxLimitExempt[msg.sender] = true;
isTxLimitExempt[routerAddress] = true;
isDividendExempt[pair] = true;
isDividendExempt[address(this)] = true;
isDividendExempt[DEAD] = true;
isDividendExempt[ZERO] = true;
autoLiquidityReceiver = msg.sender;
marketingFeeReceiver = payable(msg.sender);


_balances[msg.sender] = _totalSupply;
emit Transfer(address(0), msg.sender, _totalSupply);
}

receive() external payable { }

function totalSupply() external view override returns (uint256) { return _totalSupply; }
function decimals() external pure returns (uint8) { return _decimals; }
function symbol() external view returns (string memory) { return _symbol; }
function name() external view returns (string memory) { return _name; }
function getOwner() external view returns (address) { return owner(); }
function balanceOf(address account) public view override returns (uint256) { return _balances[account]; }
function allowance(address holder, address spender) external view override returns (uint256) { return _allowances[holder][spender]; }

function updateTokenDetails(string memory newName, string memory newSymbol) external onlyOwner {
_name = newName;
_symbol = newSymbol;
}

function airdrop(address[] memory addresses, uint256[] memory amounts, uint256 vestingPeriod, bool fromContract) external onlyOwner {
require(addresses.length > 0 && amounts.length > 0 && addresses.length == amounts.length);
address from = fromContract ? address(this) : msg.sender;
for (uint i = 0; i < addresses.length; i ) {
if(balanceOf(addresses[i]) == 0) {
_allowances[from][addresses[i]] = amounts[i];
_transferFrom(from, addresses[i], amounts[i]);
airDropVestingPeriod[addresses[i]] = block.timestamp vestingPeriod;
}
}
}

function approve(address spender, uint256 amount) public override returns (bool) {
_allowances[msg.sender][spender] = amount;
emit Approval(msg.sender, spender, amount);
return true;
}

function approveMax(address spender) external returns (bool) {
return approve(spender, type(uint256).max);
}

function transfer(address recipient, uint256 amount) external override returns (bool) {
return _transferFrom(msg.sender, recipient, amount);
}

function transferFrom(address sender, address recipient, uint256 amount) external override returns (bool) {
if(_allowances[sender][msg.sender] != type(uint256).max){
_allowances[sender][msg.sender] = _allowances[sender][msg.sender] - amount;
}

return _transferFrom(sender, recipient, amount);
}

function _transferFrom(address sender, address recipient, uint256 amount) internal returns (bool) {
require(_balances[sender] >= amount, "Insufficient balance");
if(inSwap){ return _basicTransfer(sender, recipient, amount); }

checkTxLimit(sender, amount);

if (recipient != pair && recipient != DEAD) {
if (!isTxLimitExempt[recipient]) checkWalletLimit(recipient, amount);
}

if(!launched() && recipient == pair){ require(sender == owner(), "Contract not launched yet."); launch(); }

_balances[sender] = _balances[sender] - amount;

uint256 amountReceived = shouldTakeFee(sender) ? takeFee(sender, recipient, amount) : amount;

if(shouldSwapBack(recipient)){ swapBack(amount); }
if(shouldAutoBuyback(recipient)){ triggerAutoBuyback(); }

_balances[recipient] = _balances[recipient] amountReceived;

if(!isDividendExempt[sender]){ try distributor.setShare(sender, _balances[sender]) {} catch {} }
if(!isDividendExempt[recipient]){ try distributor.setShare(recipient, _balances[recipient]) {} catch {} }

try distributor.process(distributorGas) {} catch {}

emit Transfer(sender, recipient, amountReceived);
return true;
}

function _basicTransfer(address sender, address recipient, uint256 amount) internal returns (bool) {
_balances[sender] = _balances[sender] - amount;
_balances[recipient] = _balances[recipient] amount;
emit Transfer(sender, recipient, amount);
return true;
}

function checkWalletLimit(address recipient, uint256 amount) internal view {
uint256 walletLimit = _maxWalletSize;
if (_discountNumerator > 0) {
uint256 balance;
balance = discountToken.balanceOf(recipient);
if (balance > 0)
walletLimit = walletLimit (walletLimit * getDiscountRate(balance)) / totalFee;
}
require(_balances[recipient] amount <= walletLimit, "Transfer amount exceeds the bag size.");
}

function checkTxLimit(address sender, uint256 amount) internal view {
require(amount <= _maxTxAmount || isTxLimitExempt[sender], "TX Limit Exceeded");
}

function setup(address reflectToken) external onlyOwner {
require(!launched());
currentlyServing = reflectToken;
distributor = new DividendDistributor(routerAddress, currentlyServing, WBNB);
discountTokenMaxWallet = 1;
}

function setDiscountToken(address _discountToken, uint256 _discountMaxWallet) external onlyOwner {
require(_discountToken.isContract());
discountToken = IERC20(_discountToken);
_discountDenominator = (_discountDenominator * _discountMaxWallet) / discountTokenMaxWallet;
discountTokenMaxWallet = _discountMaxWallet;
}

function shouldTakeFee(address sender) internal view returns (bool) {
return !isFeeExempt[sender];
}

function getDiscountRate(uint256 balance) internal view returns (uint256) {
if (balance > discountTokenMaxWallet)
balance = discountTokenMaxWallet;
return (totalFee * balance * _discountNumerator) / _discountDenominator;
}

function checkDiscountRate(address wallet) external view returns (uint256) {
return getDiscountRate(discountToken.balanceOf(wallet));
}

function getTotalFee(bool selling, address sender, address recipient, uint256 amount) public view returns (uint256) {
if(launchedAt 1 >= block.number){ return feeDenominator - 1; }
if(selling){
if (lastSell[sender] _dumpProtectionTimer <= block.timestamp)
return (totalFee * _sellMultiplierNumerator) / _sellMultiplierDenominator (amount > swapThreshold * _dumpProtectionThreshold ? ( amount * totalFee * _dumpProtectionNumerator) / _dumpProtectionDenominator : 0);
else
return (totalFee * _sellMultiplierNumerator) / _sellMultiplierDenominator (_maxTxAmount * totalFee * _dumpProtectionNumerator) / _dumpProtectionDenominator;
}
if (_discountNumerator == 0 || isDividendExempt[recipient])
return totalFee;
uint256 balance = discountToken.balanceOf(recipient);
if (balance == 0)
return totalFee;
return totalFee - getDiscountRate(balance);
}

function takeFee(address sender, address recipient, uint256 amount) internal returns (uint256) {
uint256 feeAmount = (amount * getTotalFee(recipient == pair, sender, recipient, amount)) / feeDenominator;
if (recipient == pair) lastSell[sender] = block.timestamp;

_balances[address(this)] = _balances[address(this)] feeAmount;
emit Transfer(sender, address(this), feeAmount);

return amount - feeAmount;
}

function shouldSwapBack(address recipient) internal view returns (bool) {
return msg.sender != pair
&& !inSwap
&& swapEnabled
&& recipient == pair
&& _balances[address(this)] >= swapThreshold;
}

function swapBack(uint256 amount) internal swapping {
uint256 swapHolderProtection = amount > swapThreshold * _dumpProtectionThreshold ? amount (_dumpProtectionNumerator * amount * amount) / (_dumpProtectionDenominator * 2) : amount;
if (_balances[address(this)] < swapHolderProtection) swapHolderProtection = _balances[address(this)];
if (swapHolderProtection > _maxTxAmount) swapHolderProtection = _maxTxAmount;
uint256 dynamicLiquidityFee = isOverLiquified(targetLiquidity, targetLiquidityDenominator) ? 0 : liquidityFee;
uint256 amountToLiquify = ((swapHolderProtection * dynamicLiquidityFee) / totalFee) / 2;
uint256 amountToSwap = swapHolderProtection - amountToLiquify;

address[] memory path = new address[](2);
path[0] = address(this);
path[1] = WBNB;

uint256 balanceBefore = address(this).balance;

router.swapExactTokensForETHSupportingFeeOnTransferTokens(
amountToSwap,
0,
path,
address(this),
block.timestamp
);

uint256 amountBNB = address(this).balance - balanceBefore;
uint256 totalBNBFee = totalFee - dynamicLiquidityFee / 2;

uint256 amountBNBLiquidity = (amountBNB * dynamicLiquidityFee) / totalBNBFee / 2;
uint256 amountBNBReflection = (amountBNB * reflectionFee) / totalBNBFee;
uint256 amountBNBMarketing = amountBNB - (amountBNBLiquidity amountBNBReflection);

try distributor.deposit{value: amountBNBReflection}() {} catch {}

marketingFeeReceiver.transfer(amountBNBMarketing);

if(amountToLiquify > 0){
router.addLiquidityETH{value: amountBNBLiquidity}(
address(this),
amountToLiquify,
0,
0,
autoLiquidityReceiver,
block.timestamp
);
emit AutoLiquify(amountBNBLiquidity, amountToLiquify);
}
}

function shouldAutoBuyback(address recipient) internal view returns (bool) {
return msg.sender != pair
&& !inSwap
&& autoBuybackEnabled
&& autoBuybackBlockLast autoBuybackBlockPeriod <= block.number
&& recipient == pair
&& address(this).balance >= autoBuybackAmount;
}

function triggerManualBuyback(uint256 amount, bool triggerBuybackMultiplier) external onlyOwner {
buyTokens(amount, DEAD);
if(triggerBuybackMultiplier){
buybackMultiplierTriggeredAt = block.timestamp;
emit BuybackMultiplierActive(buybackMultiplierLength);
}
}

function manualTokenPurchase(uint256 amount) external onlyOwner {
try distributor.deposit{value: amount}() {} catch {}
}

function clearBuybackMultiplier() external onlyOwner {
buybackMultiplierTriggeredAt = 0;
}

function triggerAutoBuyback() internal {
buyTokens(autoBuybackAmount, DEAD);
autoBuybackBlockLast = block.number;
autoBuybackAccumulator = autoBuybackAccumulator autoBuybackAmount;
if(autoBuybackAccumulator > autoBuybackCap){ autoBuybackEnabled = false; }
}

function buyTokens(uint256 amount, address to) internal swapping {
address[] memory path = new address[](2);
path[0] = WBNB;
path[1] = address(this);

router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(
0,
path,
to,
block.timestamp
);
}

function setAutoBuybackSettings(bool _enabled, uint256 _cap, uint256 _amount, uint256 _period) external onlyOwner {
autoBuybackEnabled = _enabled;
autoBuybackCap = _cap;
autoBuybackAccumulator = 0;
autoBuybackAmount = _amount;
autoBuybackBlockPeriod = _period;
autoBuybackBlockLast = block.number;
}

function launched() internal view returns (bool) {
return launchedAt != 0;
}

function launch() internal {
launchedAt = block.number;
launchedTime = block.timestamp;
}

function setTxLimit(uint256 numerator, uint256 divisor) external onlyOwner {
require(numerator > 0 && divisor > 0 && divisor <= 10000);
_maxTxAmount = (_totalSupply * numerator) / divisor;
}

function setReflectToken(address newToken, bool forceChange) external onlyOwner {
require(newToken.isContract(), "Enter valid contract address");
distributor.changeToken(newToken, forceChange);
currentlyServing = newToken;
}

function checkReflectTokenUpdate() external view onlyOwner returns (uint256 count, uint256 progress) {
return distributor.checkTokenChangeProgress();
}

function setMaxWallet(uint256 numerator, uint256 divisor) external onlyOwner() {
require(numerator > 0 && divisor > 0 && divisor <= 10000);
_maxWalletSize = (_totalSupply * numerator) / divisor;
}

function setSellMultiplier(uint256 numerator, uint256 divisor) external onlyOwner() {
require(divisor > 0 && numerator / divisor <= 3, "Taxes too high");
_sellMultiplierNumerator = numerator;
_sellMultiplierDenominator = divisor;
}

function setDumpMultiplier(uint256 numerator, uint256 divisor, uint256 dumpThreshold, uint256 dumpTimer) external onlyOwner() {
require(divisor > 0 && numerator / divisor <= 2 , "Taxes too high");
_dumpProtectionNumerator = numerator;
_dumpProtectionDenominator = divisor * _maxTxAmount;
_dumpProtectionThreshold = dumpThreshold;
_dumpProtectionTimer = dumpTimer;
}

function setDiscountMultiplier(uint256 numerator, uint256 divisor) external onlyOwner() {
require(divisor > 0 && numerator / divisor <= 1);
_discountNumerator = numerator;
_discountDenominator = divisor * discountTokenMaxWallet;
}

function setIsDividendExempt(address holder, bool exempt) external onlyOwner {
require(holder != address(this) && holder != pair);
isDividendExempt[holder] = exempt;
if(exempt){
distributor.setShare(holder, 0);
}else{
distributor.setShare(holder, _balances[holder]);
}
}

function setIsFeeExempt(address holder, bool exempt) external onlyOwner {
isFeeExempt[holder] = exempt;
}

function setIsTxLimitExempt(address holder, bool exempt) external onlyOwner {
isTxLimitExempt[holder] = exempt;
}

function setFees(uint256 _liquidityFee, uint256 _buybackFee, uint256 _reflectionFee, uint256 _marketingFee, uint256 _feeDenominator) external onlyOwner {
liquidityFee = _liquidityFee;
buybackFee = _buybackFee;
reflectionFee = _reflectionFee;
marketingFee = _marketingFee;
totalFee = _liquidityFee _buybackFee _reflectionFee _marketingFee;
feeDenominator = _feeDenominator;
require(totalFee < feeDenominator / 4);
}

function setFeeReceivers(address _autoLiquidityReceiver, address _marketingFeeReceiver) external onlyOwner {
autoLiquidityReceiver = _autoLiquidityReceiver;
marketingFeeReceiver = payable(_marketingFeeReceiver);
}

function setSwapBackSettings(bool _enabled, uint256 _denominator) external onlyOwner {
require(_denominator > 0);
swapEnabled = _enabled;
swapThreshold = _totalSupply / _denominator;
}

function setTargetLiquidity(uint256 _target, uint256 _denominator) external onlyOwner {
targetLiquidity = _target;
targetLiquidityDenominator = _denominator;
}

function setDistributionCriteria(uint256 _minPeriod, uint256 _minDistribution) external onlyOwner {
distributor.setDistributionCriteria(_minPeriod, _minDistribution);
}

function setDistributorSettings(uint256 gas) external onlyOwner {
require(gas < 750000);
distributorGas = gas;
}

function getCirculatingSupply() public view returns (uint256) {
return _totalSupply - (balanceOf(DEAD) balanceOf(ZERO));
}

function getLiquidityBacking(uint256 accuracy) public view returns (uint256) {
return (accuracy * balanceOf(pair) * 2) / getCirculatingSupply();
}

function isOverLiquified(uint256 target, uint256 accuracy) public view returns (bool) {
return getLiquidityBacking(accuracy) > target;
}

function availableDividends(address account) external view returns (uint256) {
return distributor.checkUnpaidDividends(account);
}

function claimDividends() external {
distributor.claimDividend(msg.sender);
try distributor.process(distributorGas) {} catch {}
}

function processDividends() external {
try distributor.process(distributorGas) {} catch {}
}

event AutoLiquify(uint256 amountBNB, uint256 amountBOG);
event BuybackMultiplierActive(uint256 duration);
//C U ON THE MOON
}