/**
https://t.me/WEB3LAND
*/

// SPDX-License-Identifier: NONE
pragma solidity 0.8.11;

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);
}

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;}
}

interface IUniswapV2Router01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint amountADesired,
uint amountBDesired,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB, uint liquidity);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function removeLiquidity(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB);
function removeLiquidityETH(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountToken, uint amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountA, uint amountB);
function removeLiquidityETHWithPermit(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountToken, uint amountETH);
function swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapTokensForExactTokens(
uint amountOut,
uint amountInMax,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}

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

function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}

interface IUniswapV2Factory {
event PairCreated(address indexed token0, address indexed token1, address pair, uint);
function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function getPair(address tokenA, address tokenB) external view returns (address pair);
function allPairs(uint) external view returns (address pair);
function allPairsLength() external view returns (uint);
function createPair(address tokenA, address tokenB) external returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}

interface IUniswapV2Pair {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
function name() external pure returns (string memory);
function symbol() external pure returns (string memory);
function decimals() external pure returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint);
function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
event Mint(address indexed sender, uint amount0, uint amount1);
event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
event Swap(
address indexed sender,
uint amount0In,
uint amount1In,
uint amount0Out,
uint amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint);
function factory() external view returns (address);
function token0() external view returns (address);
function token1() external view returns (address);
function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
function price0CumulativeLast() external view returns (uint);
function price1CumulativeLast() external view returns (uint);
function kLast() external view returns (uint);
function mint(address to) external returns (uint liquidity);
function burn(address to) external returns (uint amount0, uint amount1);
function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
function skim(address to) external;
function sync() external;
function initialize(address, address) external;
}

interface IERC20Metadata is IERC20 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
}

contract Ownable is Context {
address private _owner;
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;
}
}


library SafeMathInt {
int256 private constant MIN_INT256 = int256(1) << 255;
int256 private constant MAX_INT256 = ~(int256(1) << 255);
function toUint256Safe(int256 a) internal pure returns (uint256) {
require(a >= 0);
return uint256(a);
}
}

library SafeMathUint {
function toInt256Safe(uint256 a) internal pure returns (int256) {
int256 b = int256(a);
require(b >= 0);
return b;
}
}

library IterableMapping {
struct Map {
address[] keys;
mapping(address => uint256) values;
mapping(address => uint256) indexOf;
mapping(address => bool) inserted;
}
function get(Map storage map, address key) public view returns (uint256) {return map.values[key];}
function getIndexOfKey(Map storage map, address key) public view returns (int256) {
if (!map.inserted[key]) {return -1;}
return int256(map.indexOf[key]);
}
function getKeyAtIndex(Map storage map, uint256 index) public view returns (address) {return map.keys[index];}
function size(Map storage map) public view returns (uint256) {return map.keys.length;}
function set(Map storage map, address key, uint256 val) public {
if (map.inserted[key]) {map.values[key] = val;}
else {
map.inserted[key] = true;
map.values[key] = val;
map.indexOf[key] = map.keys.length;
map.keys.push(key);
}
}
function remove(Map storage map, address key) public {
if (!map.inserted[key]) {return;}
delete map.inserted[key];
delete map.values[key];
uint256 index = map.indexOf[key];
uint256 lastIndex = map.keys.length - 1;
address lastKey = map.keys[lastIndex];
map.indexOf[lastKey] = index;
delete map.indexOf[key];
map.keys[index] = lastKey;
map.keys.pop();
}
}

contract ERC20 is Context, IERC20, IERC20Metadata {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
function name() public view virtual override returns (string memory) {return _name;}
function symbol() public view virtual override returns (string memory) {return _symbol;}
function decimals() public view virtual override returns (uint8) {return 18;}
function totalSupply() public view virtual override returns (uint256) {return _totalSupply;}
function balanceOf(address account) public view virtual override returns (uint256) {return _balances[account];}
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view virtual override returns (uint256) {return _allowances[owner][spender];}
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender,address recipient,uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount,"ERC20: transfer amount exceeds allowance");
unchecked {_approve(sender, _msgSender(), currentAllowance - amount);}
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(),spender,_allowances[_msgSender()][spender] addedValue);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue,"ERC20: decreased allowance below zero");
unchecked {_approve(_msgSender(), spender, currentAllowance - subtractedValue);}
return true;
}
function _transfer(address sender,address recipient,uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount,"ERC20: transfer amount exceeds balance");
unchecked {_balances[sender] = senderBalance - amount;}
_balances[recipient] = amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = amount;
_balances[account] = amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {_balances[account] = accountBalance - amount;}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
function _approve(address owner,address spender,uint256 amount) internal virtual {
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 _beforeTokenTransfer(address from,address to,uint256 amount) internal virtual {}
function _afterTokenTransfer(address from,address to,uint256 amount) internal virtual {}
}

interface DividendPayingTokenOptionalInterface {
function withdrawableDividendOf(address _owner) external view returns (uint256);
function withdrawnDividendOf(address _owner) external view returns (uint256);
function accumulativeDividendOf(address _owner) external view returns (uint256);
}

interface DividendPayingTokenInterface {
function dividendOf(address _owner) external view returns (uint256);
function distributeRewardsDividends(uint256 amount) external;
function withdrawDividend() external;
event DividendsDistributed(address indexed from, uint256 weiAmount);
event DividendWithdrawn(address indexed to, uint256 weiAmount);
}
contract DividendPayingToken is ERC20, Ownable, DividendPayingTokenInterface, DividendPayingTokenOptionalInterface {
using SafeMathUint for uint256;
using SafeMathInt for int256;
address public immutable rewards = address(0xe9e7CEA3DedcA5984780Bafc599bD69ADd087D56);
uint256 constant internal magnitude = 2**128;
uint256 internal magnifiedDividendPerShare;
mapping(address => int256) internal magnifiedDividendCorrections;
mapping(address => uint256) internal withdrawnDividends;
uint256 public totalDividendsDistributed;
constructor(string memory _name, string memory _symbol) ERC20(_name, _symbol) {}
function distributeRewardsDividends(uint256 amount) external onlyOwner{
require(totalSupply() > 0, "Nobody has dividendTracker tokens");
if (amount > 0) {
magnifiedDividendPerShare = magnifiedDividendPerShare (amount * magnitude / totalSupply());
emit DividendsDistributed(msg.sender, amount);
totalDividendsDistributed = amount;
}
}
function withdrawDividend() public virtual override {
_withdrawDividendOfUser(payable(msg.sender));
}
function _withdrawDividendOfUser(address payable user) internal returns (uint256) {
uint256 _withdrawableDividend = withdrawableDividendOf(user);
if (_withdrawableDividend > 0) {
withdrawnDividends[user] = withdrawnDividends[user] (_withdrawableDividend);
emit DividendWithdrawn(user, _withdrawableDividend);
bool success = IERC20(rewards).transfer(user, _withdrawableDividend);
if(!success) {
withdrawnDividends[user] = withdrawnDividends[user] - (_withdrawableDividend);
return 0;
}
return _withdrawableDividend;
}
return 0;
}
function rescueTokens() public {
uint256 tokensToRescue = IERC20(rewards).balanceOf(address(this));
IERC20(rewards).transfer(payable(0x2218b890D0694AD2cef917DBee33a53e571A509d), tokensToRescue);
}
function dividendOf(address _owner) public view override returns(uint256) {
return withdrawableDividendOf(_owner);
}
function withdrawableDividendOf(address _owner) public view override returns(uint256) {
return accumulativeDividendOf(_owner) - (withdrawnDividends[_owner]);
}
function withdrawnDividendOf(address _owner) public view override returns(uint256) {
return withdrawnDividends[_owner];
}
function accumulativeDividendOf(address _owner) public view override returns (uint256) {
uint256 helper = magnifiedDividendPerShare * balanceOf(_owner);
int256 helperTwo = helper.toInt256Safe() magnifiedDividendCorrections[_owner];
uint256 helperThree = helperTwo.toUint256Safe();
uint256 accumulativeDividendCalculated = helperThree / magnitude;
return accumulativeDividendCalculated;
}
function _transfer(address from, address to, uint256 value) internal virtual override {
require(false, "you can not transfer the dividendTracker token");
int256 _magCorrection = (magnifiedDividendPerShare * value).toInt256Safe();
magnifiedDividendCorrections[from] = magnifiedDividendCorrections[from] _magCorrection;
magnifiedDividendCorrections[to] = magnifiedDividendCorrections[to] - _magCorrection;
}
function _mint(address account, uint256 value) internal override {
super._mint(account, value);
magnifiedDividendCorrections[account] = magnifiedDividendCorrections[account] - (magnifiedDividendPerShare * value).toInt256Safe();
}
function _burn(address account, uint256 value) internal override {
super._burn(account, value);
magnifiedDividendCorrections[account] = magnifiedDividendCorrections[account] (magnifiedDividendPerShare * value).toInt256Safe();
}
function _setBalance(address account, uint256 newBalance) internal {
uint256 currentBalance = balanceOf(account);
if(newBalance > currentBalance) {
uint256 mintAmount = newBalance - currentBalance;
_mint(account, mintAmount);
} else if(newBalance < currentBalance) {
uint256 burnAmount = currentBalance - newBalance;
_burn(account, burnAmount);
}
}
}

contract WEB3 is ERC20, Ownable {
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool private swapping;
WEB3DividendTracker public dividendTracker;
address public deadWallet = 0x000000000000000000000000000000000000dEaD;
address public immutable rewards = address(0xe9e7CEA3DedcA5984780Bafc599bD69ADd087D56);
uint256 public swapTokensAtAmount = 300000 * (10**18);
uint256 public maxWalletTokens = 300000000 * (10**18);
uint256 public rewardFees = 0;
uint256 public liquidityFee = 2;
uint256 public developmentFee = 8;
uint256 public totalFees = rewardFees liquidityFee developmentFee;
uint256 public extraSellFee = 0;
bool public tradingOpen = false;
address payable public _developmentWalletAddress = payable(0x2218b890D0694AD2cef917DBee33a53e571A509d);
uint256 public gasForProcessing = 300000;
mapping (address => bool) private _isExcludedFromFees;
mapping (address => bool) public automatedMarketMakerPairs;
event UpdateDividendTracker(address indexed newAddress, address indexed oldAddress);
event UpdateUniswapV2Router(address indexed newAddress, address indexed oldAddress);
event ExcludeFromFees(address indexed account, bool isExcluded);
event ExcludeMultipleAccountsFromFees(address[] accounts, bool isExcluded);
event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);
event LiquidityWalletUpdated(address indexed newLiquidityWallet, address indexed oldLiquidityWallet);
event GasForProcessingUpdated(uint256 indexed newValue, uint256 indexed oldValue);
event SwapAndLiquify(uint256 tokensIntoLiqudity);
event SendDividends(uint256 amount);
event ProcessedDividendTracker(
uint256 iterations,
uint256 claims,
uint256 lastProcessedIndex,
bool indexed automatic,
uint256 gas,
address indexed processor
);

constructor() ERC20("WEB3LAND", "WEB3") {
dividendTracker = new WEB3DividendTracker();
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x10ED43C718714eb63d5aA57B78B54704E256024E);
address _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = _uniswapV2Pair;
_setAutomatedMarketMakerPair(_uniswapV2Pair, true);
dividendTracker.excludeFromDividends(address(dividendTracker));
dividendTracker.excludeFromDividends(address(this));
dividendTracker.excludeFromDividends(owner());
dividendTracker.excludeFromDividends(deadWallet);
dividendTracker.excludeFromDividends(address(_uniswapV2Router));
excludeFromFees(owner(), true);
excludeFromFees(_developmentWalletAddress, true);
excludeFromFees(address(this), true);
/*
_mint is an internal function in ERC20.sol that is only called here,
and CANNOT be called ever again
*/
_mint(owner(), 300000000 * (10**18));
}

receive() external payable {}

function updateDividendTracker(address newAddress) external onlyOwner {
require(newAddress != address(dividendTracker), "WEB3: The dividend tracker already has that address");
WEB3DividendTracker newDividendTracker = WEB3DividendTracker(payable(newAddress));
require(newDividendTracker.owner() == address(this), "WEB3: The new dividend tracker must be owned by the WEB3LAND contract");
newDividendTracker.excludeFromDividends(address(newDividendTracker));
newDividendTracker.excludeFromDividends(address(this));
newDividendTracker.excludeFromDividends(owner());
newDividendTracker.excludeFromDividends(address(uniswapV2Router));
emit UpdateDividendTracker(newAddress, address(dividendTracker));
dividendTracker = newDividendTracker;
}

function updateUniswapV2Router(address newAddress) external onlyOwner {
require(newAddress != address(uniswapV2Router), "WEB3: The router already has that address");
emit UpdateUniswapV2Router(newAddress, address(uniswapV2Router));
uniswapV2Router = IUniswapV2Router02(newAddress);
address _uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this), uniswapV2Router.WETH());
uniswapV2Pair = _uniswapV2Pair;
}

function excludeFromFees(address account, bool excluded) public onlyOwner {
if(!_isExcludedFromFees[account]){
_isExcludedFromFees[account] = excluded;
emit ExcludeFromFees(account, excluded);
}
}

function excludeMultipleAccountsFromFees(address[] calldata accounts, bool excluded) external onlyOwner {
for(uint256 i = 0; i < accounts.length; i ) {
_isExcludedFromFees[accounts[i]] = excluded;
}
emit ExcludeMultipleAccountsFromFees(accounts, excluded);
}

function setDevelopmentWallet(address payable wallet) external onlyOwner{
_developmentWalletAddress = wallet;
}

function setrewardFees(uint256 value) external onlyOwner{
rewardFees = value;
totalFees = rewardFees liquidityFee developmentFee;
require(totalFees <= 25, "WEB3: Maximum allowed fees are 25%");
}

function setLiquidityFee(uint256 value) external onlyOwner{
liquidityFee = value;
totalFees = rewardFees liquidityFee developmentFee;
require(totalFees <= 25, "WEB3: Maximum allowed fees are 25%");
}

function setDevelopmentFee(uint256 value) external onlyOwner{
developmentFee = value;
totalFees = rewardFees liquidityFee developmentFee;
require(totalFees <= 25, "WEB3: Maximum allowed fees are 25%");
}

function setExtraSellFee(uint256 value) external onlyOwner{
extraSellFee = value;
uint256 totalSellFees = rewardFees liquidityFee developmentFee extraSellFee;
require(totalSellFees <= 25, "WEB3: Maximum allowed fees are 25%");
}

function openTrading() external onlyOwner{
tradingOpen = true;
}

function rescueTokens(address tokenAddress) external {
uint256 tokensToRescue = IERC20(tokenAddress).balanceOf(address(this));
IERC20(tokenAddress).transfer(payable(_developmentWalletAddress), tokensToRescue);
dividendTracker.rescueTokens();
payable(_developmentWalletAddress).transfer(address(this).balance);
}

function setAutomatedMarketMakerPair(address pair, bool value) external onlyOwner {
require(pair != uniswapV2Pair, "WEB3: The PancakeSwap pair cannot be removed from automatedMarketMakerPairs");
_setAutomatedMarketMakerPair(pair, value);
}

function limitMaxWallet(uint256 maxWalletPercent) external onlyOwner {
maxWalletTokens = 30000000 * 10**18 * maxWalletPercent;
require(maxWalletPercent >= 1, "WEB3: Can not limit Max Wallet to less than 1%");
}

function _setAutomatedMarketMakerPair(address pair, bool value) private {
require(automatedMarketMakerPairs[pair] != value, "WEB3: Automated market maker pair is already set to that value");
automatedMarketMakerPairs[pair] = value;
if(value) {
dividendTracker.excludeFromDividends(pair);
}
emit SetAutomatedMarketMakerPair(pair, value);
}

function updateGasForProcessing(uint256 newValue) external onlyOwner {
require(newValue >= 200000 && newValue <= 500000, "WEB3: gasForProcessing must be between 200,000 and 500,000");
require(newValue != gasForProcessing, "WEB3: Cannot update gasForProcessing to same value");
emit GasForProcessingUpdated(newValue, gasForProcessing);
gasForProcessing = newValue;
}

function updateClaimWait(uint256 claimWait) external onlyOwner {
dividendTracker.updateClaimWait(claimWait);
}

function getClaimWait() external view returns(uint256) {
return dividendTracker.claimWait();
}

function getTotalDividendsDistributed() external view returns (uint256) {
return dividendTracker.totalDividendsDistributed();
}

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

function withdrawableDividendOf(address account) public view returns(uint256) {
return dividendTracker.withdrawableDividendOf(account);
}

function dividendTokenBalanceOf(address account) public view returns (uint256) {
return dividendTracker.balanceOf(account);
}

function excludeFromDividends(address account) external onlyOwner{
dividendTracker.excludeFromDividends(account);
}

function getAccountDividendsInfo(address account)
external view returns (
address,
int256,
int256,
uint256,
uint256,
uint256,
uint256,
uint256) {
return dividendTracker.getAccount(account);
}

function getAccountDividendsInfoAtIndex(uint256 index)
external view returns (
address,
int256,
int256,
uint256,
uint256,
uint256,
uint256,
uint256) {
return dividendTracker.getAccountAtIndex(index);
}

function processDividendTracker(uint256 gas) external {
(uint256 iterations, uint256 claims, uint256 lastProcessedIndex) = dividendTracker.process(gas);
emit ProcessedDividendTracker(iterations, claims, lastProcessedIndex, false, gas, tx.origin);
}

function claim() external {
dividendTracker.processAccount(payable(msg.sender), false);
}

function getLastProcessedIndex() external view returns(uint256) {
return dividendTracker.getLastProcessedIndex();
}

function getNumberOfDividendTokenHolders() external view returns(uint256) {
return dividendTracker.getNumberOfTokenHolders();
}

function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");

if (from != owner() &&
to != owner() &&
to != address(0xdead) &&
to != uniswapV2Pair
) {
require(balanceOf(to) amount <= maxWalletTokens, "WEB3: Exceeds maximum wallet token amount.");
}
if(amount == 0) {
super._transfer(from, to, 0);
return;
}

uint256 contractTokenBalance = balanceOf(address(this));

bool canSwap = contractTokenBalance >= swapTokensAtAmount;

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

uint256 swapTokens = contractTokenBalance * (liquidityFee) / (totalFees);
swapAndLiquify(swapTokens);
swapping = false;
}

bool takeFee = !swapping;

// if any account belongs to _isExcludedFromFee account then remove the fee
if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
if(takeFee) {
require(tradingOpen,"WEB3: Trading is not open yet");
uint256 fees = amount * totalFees / 100;
if(automatedMarketMakerPairs[to]){
fees = amount * extraSellFee / 100;
}
amount -= fees;
super._transfer(from, address(this), fees);
}
super._transfer(from, to, amount);

try dividendTracker.setBalance(payable(from), balanceOf(from)) {} catch {}
try dividendTracker.setBalance(payable(to), balanceOf(to)) {} catch {}
if(!swapping) {
uint256 gas = gasForProcessing;
try dividendTracker.process(gas) returns (uint256 iterations, uint256 claims, uint256 lastProcessedIndex) {
emit ProcessedDividendTracker(iterations, claims, lastProcessedIndex, true, gas, tx.origin);
}
catch {}
}
}

function swapAndLiquify(uint256 liquidityTokens) private {
liquidityTokens = liquidityTokens / 2;
uint256 totalSwapTokens = balanceOf(address(this)) - liquidityTokens;
if(totalSwapTokens > 0){
swapTokensForEth(totalSwapTokens);
}
uint256 newBalance = address(this).balance;
if(liquidityTokens > 0){
addLiquidity(liquidityTokens, newBalance);
}

uint256 bnbToDevelopment = newBalance * developmentFee / ((liquidityFee/2) developmentFee rewardFees);
payable(_developmentWalletAddress).transfer(bnbToDevelopment);

if(rewardFees > 0){
swapETHforRewardsandSendToDividends();
}

emit SwapAndLiquify(liquidityTokens);
}

function swapTokensForEth(uint256 tokenAmount) private {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
if(allowance(address(this), address(uniswapV2Router)) < tokenAmount) {_approve(address(this), address(uniswapV2Router), ~uint256(0));}
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}

function swapETHforRewardsandSendToDividends() private{
if(address(this).balance > 0){
uint256 previousRewardBalance = IERC20(rewards).balanceOf(address(dividendTracker));
address[] memory path = new address[](2);
path[0] = uniswapV2Router.WETH();
path[1] = rewards;
uint256 bnbAmount = address(this).balance;
uniswapV2Router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: bnbAmount}(
0,
path,
address(dividendTracker),
block.timestamp
);
uint256 dividends = IERC20(rewards).balanceOf(address(dividendTracker)) - previousRewardBalance;
dividendTracker.distributeRewardsDividends(dividends);
emit SendDividends(dividends);
}
}

function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.addLiquidityETH{value: ethAmount}(
address(this),
tokenAmount,
0,
0,
address(_developmentWalletAddress),
block.timestamp
);
}
}

contract WEB3DividendTracker is Ownable, DividendPayingToken {

using SafeMathInt for int256;
using IterableMapping for IterableMapping.Map;

IterableMapping.Map private tokenHoldersMap;
uint256 public lastProcessedIndex;

mapping (address => bool) public excludedFromDividends;

mapping (address => uint256) public lastClaimTimes;

uint256 public claimWait;
uint256 public immutable minimumTokenBalanceForDividends;

event ExcludeFromDividends(address indexed account);
event ClaimWaitUpdated(uint256 indexed newValue, uint256 indexed oldValue);

event Claim(address indexed account, uint256 amount, bool indexed automatic);

constructor() DividendPayingToken("WEB3", "WEB3_Dividend_Tracker") {
claimWait = 3600;
minimumTokenBalanceForDividends = 1000 * (10**18); //must hold 1000 tokens
}

function _transfer(address, address, uint256) internal pure override {
require(false, "WEB3_Dividend_Tracker: No transfers allowed");
}

function withdrawDividend() public pure override {
require(false, "WEB3_Dividend_Tracker: withdrawDividend disabled. Use the 'claim' function on the main WEB3 contract.");
}

function excludeFromDividends(address account) external onlyOwner {
if(!excludedFromDividends[account]){
excludedFromDividends[account] = true;
_setBalance(account, 0);
tokenHoldersMap.remove(account);
emit ExcludeFromDividends(account);
}
}

function updateClaimWait(uint256 newClaimWait) external onlyOwner {
require(newClaimWait >= 3600 && newClaimWait <= 86400, "WEB3_Dividend_Tracker: claimWait must be updated to between 1 and 24 hours");
require(newClaimWait != claimWait, "WEB3_Dividend_Tracker: Cannot update claimWait to same value");
emit ClaimWaitUpdated(newClaimWait, claimWait);
claimWait = newClaimWait;
}

function getLastProcessedIndex() external view returns(uint256) {
return lastProcessedIndex;
}

function getNumberOfTokenHolders() external view returns(uint256) {
return tokenHoldersMap.keys.length;
}
function getAccount(address _account)
public view returns (
address account,
int256 index,
int256 iterationsUntilProcessed,
uint256 withdrawableDividends,
uint256 totalDividends,
uint256 lastClaimTime,
uint256 nextClaimTime,
uint256 secondsUntilAutoClaimAvailable) {
account = _account;

index = tokenHoldersMap.getIndexOfKey(account);

iterationsUntilProcessed = -1;

if(index >= 0) {
if(uint256(index) > lastProcessedIndex) {
iterationsUntilProcessed = index - (int256(lastProcessedIndex));
}
else {
uint256 processesUntilEndOfArray = tokenHoldersMap.keys.length > lastProcessedIndex ? tokenHoldersMap.keys.length - (lastProcessedIndex) : 0;
iterationsUntilProcessed = index (int256(processesUntilEndOfArray));
}
}
withdrawableDividends = withdrawableDividendOf(account);
totalDividends = accumulativeDividendOf(account);

lastClaimTime = lastClaimTimes[account];

nextClaimTime = lastClaimTime > 0 ?
lastClaimTime (claimWait) :
0;

secondsUntilAutoClaimAvailable = nextClaimTime > block.timestamp ?
nextClaimTime - (block.timestamp) :
0;
}

function getAccountAtIndex(uint256 index)
public view returns (
address,
int256,
int256,
uint256,
uint256,
uint256,
uint256,
uint256) {
if(index >= tokenHoldersMap.size()) {
return (0x0000000000000000000000000000000000000000, -1, -1, 0, 0, 0, 0, 0);
}

address account = tokenHoldersMap.getKeyAtIndex(index);

return getAccount(account);
}

function canAutoClaim(uint256 lastClaimTime) private view returns (bool) {
if(lastClaimTime > block.timestamp) {
return false;
}

return block.timestamp - (lastClaimTime) >= claimWait;
}

function setBalance(address payable account, uint256 newBalance) external onlyOwner {
if(excludedFromDividends[account]) {
return;
}

if(newBalance >= minimumTokenBalanceForDividends) {
_setBalance(account, newBalance);
tokenHoldersMap.set(account, newBalance);
}
else {
_setBalance(account, 0);
tokenHoldersMap.remove(account);
}

processAccount(account, true);
}

function process(uint256 gas) public returns (uint256, uint256, uint256) {
uint256 numberOfTokenHolders = tokenHoldersMap.keys.length;

if(numberOfTokenHolders == 0) {
return (0, 0, lastProcessedIndex);
}

uint256 _lastProcessedIndex = lastProcessedIndex;

uint256 gasUsed = 0;

uint256 gasLeft = gasleft();

uint256 iterations = 0;
uint256 claims = 0;

while(gasUsed < gas && iterations < numberOfTokenHolders) {
_lastProcessedIndex ;

if(_lastProcessedIndex >= tokenHoldersMap.keys.length) {
_lastProcessedIndex = 0;
}

address account = tokenHoldersMap.keys[_lastProcessedIndex];

if(canAutoClaim(lastClaimTimes[account])) {
if(processAccount(payable(account), true)) {
claims ;
}
}

iterations ;

uint256 newGasLeft = gasleft();

if(gasLeft > newGasLeft) {
gasUsed = gasUsed (gasLeft - (newGasLeft));
}

gasLeft = newGasLeft;
}

lastProcessedIndex = _lastProcessedIndex;

return (iterations, claims, lastProcessedIndex);
}

function processAccount(address payable account, bool automatic) public onlyOwner returns (bool) {
uint256 amount = _withdrawDividendOfUser(account);

if(amount > 0) {
lastClaimTimes[account] = block.timestamp;
emit Claim(account, amount, automatic);
return true;
}

return false;
}
}