Contract Source Code:
File 1 of 1 : Brewlabs
// SPDX-License-Identifier: MIT
pragma solidity 0.8.17;
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 IFactory {
function createPair(address tokenA, address tokenB) external returns (address pair);
function getPair(address tokenA, address tokenB) external view returns (address pair);
}
interface IRouter {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
}
interface IERC20Metadata is IERC20 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
}
interface DividendPayingTokenInterface {
function dividendOf(address _owner) external view returns (uint256);
function distributeDividends() external payable;
function withdrawDividend() external;
event DividendsDistributed(address indexed from, uint256 weiAmount);
event DividendWithdrawn(address indexed to, uint256 weiAmount);
}
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);
}
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
function div(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
function mod(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
library SafeMathInt {
int256 private constant MIN_INT256 = int256(1) << 255;
int256 private constant MAX_INT256 = ~(int256(1) << 255);
function mul(int256 a, int256 b) internal pure returns (int256) {
int256 c = a * b;
// Detect overflow when multiplying MIN_INT256 with -1
require(c != MIN_INT256 || (a & MIN_INT256) != (b & MIN_INT256));
require((b == 0) || (c / b == a));
return c;
}
function div(int256 a, int256 b) internal pure returns (int256) {
// Prevent overflow when dividing MIN_INT256 by -1
require(b != -1 || a != MIN_INT256);
// Solidity already throws when dividing by 0.
return a / b;
}
function sub(int256 a, int256 b) internal pure returns (int256) {
int256 c = a - b;
require((b >= 0 && c <= a) || (b < 0 && c > a));
return c;
}
function add(int256 a, int256 b) internal pure returns (int256) {
int256 c = a + b;
require((b >= 0 && c >= a) || (b < 0 && c < a));
return c;
}
function abs(int256 a) internal pure returns (int256) {
require(a != MIN_INT256);
return a < 0 ? -a : a;
}
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 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);
}
}
}
}
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();
}
}
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
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;
}
}
contract ERC20 is Context, IERC20, IERC20Metadata {
using SafeMath for uint256;
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);
_approve(
sender,
_msgSender(),
_allowances[sender][_msgSender()].sub(
amount,
"ERC20: transfer amount exceeds allowance"
)
);
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue)
public
virtual
returns (bool)
{
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender].sub(
subtractedValue,
"ERC20: decreased allowance below zero"
)
);
return true;
}
function _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);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(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 = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(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);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(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 {}
}
contract DividendPayingToken is
ERC20,
Ownable,
DividendPayingTokenInterface,
DividendPayingTokenOptionalInterface
{
using SafeMath for uint256;
using SafeMathUint for uint256;
using SafeMathInt for int256;
uint256 internal constant magnitude = 2**128;
uint256 internal magnifiedDividendPerShare;
uint256 public totalDividendsDistributed;
address public rewardToken;
IRouter public uniswapV2Router;
mapping(address => int256) internal magnifiedDividendCorrections;
mapping(address => uint256) internal withdrawnDividends;
constructor(string memory _name, string memory _symbol) ERC20(_name, _symbol) {}
receive() external payable {
distributeDividends();
}
function distributeDividends() public payable override onlyOwner {
require(totalSupply() > 0);
if (msg.value > 0) {
magnifiedDividendPerShare = magnifiedDividendPerShare.add(
(msg.value).mul(magnitude) / totalSupply()
);
emit DividendsDistributed(msg.sender, msg.value);
totalDividendsDistributed = totalDividendsDistributed.add(msg.value);
}
}
function withdrawDividend() public virtual override onlyOwner {
_withdrawDividendOfUser(payable(msg.sender));
}
function _withdrawDividendOfUser(address payable user) internal returns (uint256) {
uint256 _withdrawableDividend = withdrawableDividendOf(user);
if (_withdrawableDividend > 0) {
withdrawnDividends[user] = withdrawnDividends[user].add(_withdrawableDividend);
emit DividendWithdrawn(user, _withdrawableDividend);
return swapETHForTokensAndWithdrawDividend(user, _withdrawableDividend);
}
return 0;
}
function swapETHForTokensAndWithdrawDividend(address holder, uint256 ethAmount)
private
returns (uint256)
{
address[] memory path = new address[](2);
path[0] = uniswapV2Router.WETH();
path[1] = address(rewardToken);
try
uniswapV2Router.swapExactETHForTokensSupportingFeeOnTransferTokens{ value: ethAmount }(
0, // accept any amount of tokens
path,
address(holder),
block.timestamp
)
{
return ethAmount;
} catch {
withdrawnDividends[holder] = withdrawnDividends[holder].sub(ethAmount);
return 0;
}
}
function dividendOf(address _owner) public view override returns (uint256) {
return withdrawableDividendOf(_owner);
}
function withdrawableDividendOf(address _owner) public view override returns (uint256) {
return accumulativeDividendOf(_owner).sub(withdrawnDividends[_owner]);
}
function withdrawnDividendOf(address _owner) public view override returns (uint256) {
return withdrawnDividends[_owner];
}
function accumulativeDividendOf(address _owner) public view override returns (uint256) {
return
magnifiedDividendPerShare
.mul(balanceOf(_owner))
.toInt256Safe()
.add(magnifiedDividendCorrections[_owner])
.toUint256Safe() / magnitude;
}
function _transfer(
address from,
address to,
uint256 value
) internal virtual override {
require(false);
int256 _magCorrection = magnifiedDividendPerShare.mul(value).toInt256Safe();
magnifiedDividendCorrections[from] = magnifiedDividendCorrections[from].add(_magCorrection);
magnifiedDividendCorrections[to] = magnifiedDividendCorrections[to].sub(_magCorrection);
}
function _mint(address account, uint256 value) internal override {
super._mint(account, value);
magnifiedDividendCorrections[account] = magnifiedDividendCorrections[account].sub(
(magnifiedDividendPerShare.mul(value)).toInt256Safe()
);
}
function _burn(address account, uint256 value) internal override {
super._burn(account, value);
magnifiedDividendCorrections[account] = magnifiedDividendCorrections[account].add(
(magnifiedDividendPerShare.mul(value)).toInt256Safe()
);
}
function _setBalance(address account, uint256 newBalance) internal {
uint256 currentBalance = balanceOf(account);
if (newBalance > currentBalance) {
uint256 mintAmount = newBalance.sub(currentBalance);
_mint(account, mintAmount);
} else if (newBalance < currentBalance) {
uint256 burnAmount = currentBalance.sub(newBalance);
_burn(account, burnAmount);
}
}
function _setRewardToken(address token) internal onlyOwner {
rewardToken = token;
}
function _setUniswapRouter(address router) internal onlyOwner {
uniswapV2Router = IRouter(router);
}
}
contract Brewlabs is Ownable, ERC20 {
using Address for address;
IRouter public uniswapV2Router;
address public immutable uniswapV2Pair;
string private constant _name = "Brewlabs";
string private constant _symbol = "BREWLABS";
uint8 private constant _decimals = 9;
BrewlabsDividendTracker public dividendTracker;
bool public isTradingEnabled;
// max wallet is 1.5% of Brewlabs(BEP20)'s initialSupply
uint256 public maxWalletAmount = (1000000000 * (10**9) * 150) / 10000;
// max buy and sell tx is 0.2% of Brewlabs(BEP20)'s initialSupply
uint256 public maxTxAmount = (1000000000 * (10**9) * 20) / 10000;
bool private _swapping;
uint256 public minimumTokensBeforeSwap = 250000000 * (10**9);
address public dividendToken = 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48; //USDC
address public liquidityWallet;
address public devWallet;
address public buyBackWallet;
address public bridge;
address public stakingAddress;
struct CustomTaxPeriod {
bytes23 periodName;
uint8 blocksInPeriod;
uint256 timeInPeriod;
uint8 liquidityFeeOnBuy;
uint8 liquidityFeeOnSell;
uint8 devFeeOnBuy;
uint8 devFeeOnSell;
uint8 buyBackFeeOnBuy;
uint8 buyBackFeeOnSell;
uint8 stakingFeeOnBuy;
uint8 stakingFeeOnSell;
uint8 holdersFeeOnBuy;
uint8 holdersFeeOnSell;
}
// Base taxes
CustomTaxPeriod private _base = CustomTaxPeriod("base", 0, 0, 1, 1, 1, 1, 8, 8, 1, 1, 4, 4);
mapping(address => bool) private _isAllowedToTradeWhenDisabled;
mapping(address => bool) private _feeOnSelectedWalletTransfers;
mapping(address => bool) private _isExcludedFromFee;
mapping(address => bool) private _isExcludedFromMaxTransactionLimit;
mapping(address => bool) private _isExcludedFromMaxWalletLimit;
mapping(address => bool) public automatedMarketMakerPairs;
uint8 private _liquidityFee;
uint8 private _devFee;
uint8 private _buyBackFee;
uint8 private _stakingFee;
uint8 private _holdersFee;
uint8 private _totalFee;
event AutomatedMarketMakerPairChange(address indexed pair, bool indexed value);
event UniswapV2RouterChange(address indexed newAddress, address indexed oldAddress);
event WalletChange(
string indexed indentifier,
address indexed newWallet,
address indexed oldWallet
);
event FeeChange(
string indexed identifier,
uint8 liquidityFee,
uint8 devFee,
uint8 buyBackFee,
uint8 stakingFee,
uint8 holdersFee
);
event CustomTaxPeriodChange(
uint256 indexed newValue,
uint256 indexed oldValue,
string indexed taxType,
bytes23 period
);
event MaxTransactionAmountChange(uint256 indexed newValue, uint256 indexed oldValue);
event MaxWalletAmountChange(uint256 indexed newValue, uint256 indexed oldValue);
event ExcludeFromFeesChange(address indexed account, bool isExcluded);
event ExcludeFromMaxTransferChange(address indexed account, bool isExcluded);
event ExcludeFromMaxWalletChange(address indexed account, bool isExcluded);
event ExcludeFromDividendsChange(address indexed account, bool isExcluded);
event AllowedWhenTradingDisabledChange(address indexed account, bool isExcluded);
event MinTokenAmountBeforeSwapChange(uint256 indexed newValue, uint256 indexed oldValue);
event MinTokenAmountForDividendsChange(uint256 indexed newValue, uint256 indexed oldValue);
event DividendsSent(uint256 tokensSwapped);
event SwapAndLiquify(uint256 tokensSwapped, uint256 ethReceived, uint256 tokensIntoLiqudity);
event FeeOnSelectedWalletTransfersChange(address indexed account, bool newValue);
event ClaimETHOverflow(uint256 amount);
event FeesApplied(
uint8 liquidityFee,
uint8 devFee,
uint8 buyBackFee,
uint8 stakingFee,
uint8 holdersFee,
uint8 totalFee
);
event SetBridgeContract(address indexed bridgeContract);
event SetStakingAddress(address indexed stakingAddress);
modifier hasMintPermission() {
require(msg.sender == bridge, "Only bridge contract can mint");
_;
}
constructor() ERC20(_name, _symbol) {
dividendTracker = new BrewlabsDividendTracker();
dividendTracker.setUniswapRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
dividendTracker.setRewardToken(dividendToken);
liquidityWallet = owner();
devWallet = owner();
buyBackWallet = owner();
IRouter _uniswapV2Router = IRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
address _uniswapV2Pair = IFactory(_uniswapV2Router.factory()).createPair(
address(this),
_uniswapV2Router.WETH()
);
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = _uniswapV2Pair;
_setAutomatedMarketMakerPair(_uniswapV2Pair, true);
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[address(dividendTracker)] = true;
dividendTracker.excludeFromDividends(address(dividendTracker));
dividendTracker.excludeFromDividends(address(this));
dividendTracker.excludeFromDividends(address(0x000000000000000000000000000000000000dEaD));
dividendTracker.excludeFromDividends(owner());
dividendTracker.excludeFromDividends(address(_uniswapV2Router));
_isAllowedToTradeWhenDisabled[owner()] = true;
_isAllowedToTradeWhenDisabled[address(this)] = true;
_isExcludedFromMaxTransactionLimit[address(dividendTracker)] = true;
_isExcludedFromMaxTransactionLimit[address(this)] = true;
_isExcludedFromMaxWalletLimit[_uniswapV2Pair] = true;
_isExcludedFromMaxWalletLimit[address(dividendTracker)] = true;
_isExcludedFromMaxWalletLimit[address(uniswapV2Router)] = true;
_isExcludedFromMaxWalletLimit[address(this)] = true;
_isExcludedFromMaxWalletLimit[owner()] = true;
}
receive() external payable {}
// Setters
function decimals() public view virtual override returns (uint8) {
return _decimals;
}
function activateTrading() external onlyOwner {
isTradingEnabled = true;
}
function deactivateTrading() external onlyOwner {
isTradingEnabled = false;
}
function _setAutomatedMarketMakerPair(address pair, bool value) private {
require(
automatedMarketMakerPairs[pair] != value,
"Brewlabs: Automated market maker pair is already set to that value"
);
automatedMarketMakerPairs[pair] = value;
if (value) {
dividendTracker.excludeFromDividends(pair);
}
emit AutomatedMarketMakerPairChange(pair, value);
}
function allowTradingWhenDisabled(address account, bool allowed) external onlyOwner {
_isAllowedToTradeWhenDisabled[account] = allowed;
emit AllowedWhenTradingDisabledChange(account, allowed);
}
function setFeeOnSelectedWalletTransfers(address account, bool value) external onlyOwner {
require(
_feeOnSelectedWalletTransfers[account] != value,
"Brewlabs: The selected wallet is already set to the value "
);
_feeOnSelectedWalletTransfers[account] = value;
emit FeeOnSelectedWalletTransfersChange(account, value);
}
function excludeFromFees(address account, bool excluded) external onlyOwner {
require(
_isExcludedFromFee[account] != excluded,
"Brewlabs: Account is already the value of 'excluded'"
);
_isExcludedFromFee[account] = excluded;
emit ExcludeFromFeesChange(account, excluded);
}
function excludeFromDividends(address account) external onlyOwner {
dividendTracker.excludeFromDividends(account);
}
function excludeFromMaxTransactionLimit(address account, bool excluded) external onlyOwner {
require(
_isExcludedFromMaxTransactionLimit[account] != excluded,
"Brewlabs: Account is already the value of 'excluded'"
);
_isExcludedFromMaxTransactionLimit[account] = excluded;
emit ExcludeFromMaxTransferChange(account, excluded);
}
function excludeFromMaxWalletLimit(address account, bool excluded) external onlyOwner {
require(
_isExcludedFromMaxWalletLimit[account] != excluded,
"Brewlabs: Account is already the value of 'excluded'"
);
_isExcludedFromMaxWalletLimit[account] = excluded;
emit ExcludeFromMaxWalletChange(account, excluded);
}
function setStakingAddress(
address newStakingAddress
) external onlyOwner {
require(newStakingAddress != address(0), "Brewlabs: The stakingAddress cannot be 0");
require(newStakingAddress != stakingAddress, "Brewlabs: The stakingAddress is already the value of newStakingAddress");
stakingAddress = newStakingAddress;
emit SetStakingAddress(stakingAddress);
}
function setWallets(
address newLiquidityWallet,
address newDevWallet,
address newBuyBackWallet
) external onlyOwner {
if (liquidityWallet != newLiquidityWallet) {
require(newLiquidityWallet != address(0), "Brewlabs: The liquidityWallet cannot be 0");
emit WalletChange("liquidityWallet", newLiquidityWallet, liquidityWallet);
liquidityWallet = newLiquidityWallet;
}
if (devWallet != newDevWallet) {
require(newDevWallet != address(0), "Brewlabs: The devWallet cannot be 0");
emit WalletChange("devWallet", newDevWallet, devWallet);
devWallet = newDevWallet;
}
if (buyBackWallet != newBuyBackWallet) {
require(newBuyBackWallet != address(0), "Brewlabs: The buyBackWallet cannot be 0");
emit WalletChange("buyBackWallet", newBuyBackWallet, buyBackWallet);
buyBackWallet = newBuyBackWallet;
}
}
// Base fees
function setBaseFeesOnBuy(
uint8 _liquidityFeeOnBuy,
uint8 _devFeeOnBuy,
uint8 _buyBackFeeOnBuy,
uint8 _stakingFeeOnBuy,
uint8 _holdersFeeOnBuy
) external onlyOwner {
_setCustomBuyTaxPeriod(
_base,
_liquidityFeeOnBuy,
_devFeeOnBuy,
_buyBackFeeOnBuy,
_stakingFeeOnBuy,
_holdersFeeOnBuy
);
emit FeeChange(
"baseFees-Buy",
_liquidityFeeOnBuy,
_devFeeOnBuy,
_buyBackFeeOnBuy,
_stakingFeeOnBuy,
_holdersFeeOnBuy
);
}
function setBaseFeesOnSell(
uint8 _liquidityFeeOnSell,
uint8 _devFeeOnSell,
uint8 _buyBackFeeOnSell,
uint8 _stakingFeeOnSell,
uint8 _holdersFeeOnSell
) external onlyOwner {
_setCustomSellTaxPeriod(
_base,
_liquidityFeeOnSell,
_devFeeOnSell,
_buyBackFeeOnSell,
_stakingFeeOnSell,
_holdersFeeOnSell
);
emit FeeChange(
"baseFees-Sell",
_liquidityFeeOnSell,
_devFeeOnSell,
_buyBackFeeOnSell,
_stakingFeeOnSell,
_holdersFeeOnSell
);
}
function setUniswapRouter(address newAddress) external onlyOwner {
require(
newAddress != address(uniswapV2Router),
"Brewlabs: The router already has that address"
);
emit UniswapV2RouterChange(newAddress, address(uniswapV2Router));
uniswapV2Router = IRouter(newAddress);
dividendTracker.setUniswapRouter(newAddress);
}
function setMaxTransactionAmount(uint256 newValue) external onlyOwner {
require(newValue != maxTxAmount, "Brewlabs: Cannot update maxTxAmount to same value");
emit MaxTransactionAmountChange(newValue, maxTxAmount);
maxTxAmount = newValue;
}
function setMaxWalletAmount(uint256 newValue) external onlyOwner {
require(
newValue != maxWalletAmount,
"Brewlabs: Cannot update maxWalletAmount to same value"
);
emit MaxWalletAmountChange(newValue, maxWalletAmount);
maxWalletAmount = newValue;
}
function setMinimumTokensBeforeSwap(uint256 newValue) external onlyOwner {
require(
newValue != minimumTokensBeforeSwap,
"Brewlabs: Cannot update minimumTokensBeforeSwap to same value"
);
emit MinTokenAmountBeforeSwapChange(newValue, minimumTokensBeforeSwap);
minimumTokensBeforeSwap = newValue;
}
function setMinimumTokenBalanceForDividends(uint256 newValue) external onlyOwner {
dividendTracker.setTokenBalanceForDividends(newValue);
}
function claim() external {
dividendTracker.processAccount(payable(msg.sender), false);
}
function claimETHOverflow(uint256 amount) external onlyOwner {
require(amount < address(this).balance, "Brewlabs: Cannot send more than contract balance");
(bool success, ) = address(owner()).call{ value: amount }("");
if (success) {
emit ClaimETHOverflow(amount);
}
}
function mint(address account, uint256 value) external hasMintPermission returns (bool) {
_mint(account, value);
try dividendTracker.setBalance(payable(account), balanceOf(account)) {} catch {}
return true;
}
function burn(uint256 value) external {
_burn(msg.sender, value);
try dividendTracker.setBalance(payable(msg.sender), balanceOf(msg.sender)) {} catch {}
}
function setBridgeContract(address _bridgeContract) external onlyOwner {
require(_bridgeContract != address(0x0) && _bridgeContract != bridge, "Brewlabs: Invalid bridge");
bridge = _bridgeContract;
emit SetBridgeContract(_bridgeContract);
}
// Getters
function getTotalDividendsDistributed() external view returns (uint256) {
return dividendTracker.totalDividendsDistributed();
}
function withdrawableDividendOf(address account) external view returns (uint256) {
return dividendTracker.withdrawableDividendOf(account);
}
function dividendTokenBalanceOf(address account) external view returns (uint256) {
return dividendTracker.balanceOf(account);
}
function getNumberOfDividendTokenHolders() external view returns (uint256) {
return dividendTracker.getNumberOfTokenHolders();
}
function getBaseBuyFees()
external
view
returns (
uint8,
uint8,
uint8,
uint8,
uint8
)
{
return (
_base.liquidityFeeOnBuy,
_base.devFeeOnBuy,
_base.buyBackFeeOnBuy,
_base.stakingFeeOnBuy,
_base.holdersFeeOnBuy
);
}
function getBaseSellFees()
external
view
returns (
uint8,
uint8,
uint8,
uint8,
uint8
)
{
return (
_base.liquidityFeeOnSell,
_base.devFeeOnSell,
_base.buyBackFeeOnSell,
_base.stakingFeeOnSell,
_base.holdersFeeOnSell
);
}
// Main
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 (amount == 0) {
super._transfer(from, to, 0);
return;
}
if (!_isAllowedToTradeWhenDisabled[from] && !_isAllowedToTradeWhenDisabled[to]) {
require(isTradingEnabled, "Brewlabs: Trading is currently disabled.");
if (!_isExcludedFromMaxTransactionLimit[to] && !_isExcludedFromMaxTransactionLimit[from]) {
require(amount <= maxTxAmount, "Brewlabs: Buy amount exceeds the maxTxBuyAmount.");
}
if (!_isExcludedFromMaxWalletLimit[to]) {
require((balanceOf(to) + amount) <= maxWalletAmount, "Brewlabs: Expected wallet amount exceeds the maxWalletAmount.");
}
}
_adjustTaxes(automatedMarketMakerPairs[from], automatedMarketMakerPairs[to], from, to);
bool canSwap = balanceOf(address(this)) >= minimumTokensBeforeSwap;
if (
isTradingEnabled &&
canSwap &&
!_swapping &&
_totalFee > 0 &&
automatedMarketMakerPairs[to]
) {
_swapping = true;
_swapAndLiquify();
_swapping = false;
}
bool takeFee = !_swapping && isTradingEnabled;
if (_isExcludedFromFee[from] || _isExcludedFromFee[to]) {
takeFee = false;
}
if (takeFee && _totalFee > 0) {
uint256 fee = (amount * _totalFee) / 100;
amount = amount - fee;
super._transfer(from, address(this), fee);
}
super._transfer(from, to, amount);
try dividendTracker.setBalance(payable(from), balanceOf(from)) {} catch {}
try dividendTracker.setBalance(payable(to), balanceOf(to)) {} catch {}
}
function _adjustTaxes(
bool isBuyFromLp,
bool isSelltoLp,
address from,
address to
) private {
_liquidityFee = 0;
_devFee = 0;
_buyBackFee = 0;
_stakingFee = 0;
_holdersFee = 0;
if (isBuyFromLp) {
_liquidityFee = _base.liquidityFeeOnBuy;
_devFee = _base.devFeeOnBuy;
_buyBackFee = _base.buyBackFeeOnBuy;
_stakingFee = _base.stakingFeeOnBuy;
_holdersFee = _base.holdersFeeOnBuy;
}
if (isSelltoLp) {
_liquidityFee = _base.liquidityFeeOnSell;
_devFee = _base.devFeeOnSell;
_buyBackFee = _base.buyBackFeeOnSell;
_stakingFee = _base.stakingFeeOnSell;
_holdersFee = _base.holdersFeeOnSell;
}
if (
!isSelltoLp &&
!isBuyFromLp &&
(_feeOnSelectedWalletTransfers[from] || _feeOnSelectedWalletTransfers[to])
) {
_liquidityFee = _base.liquidityFeeOnBuy;
_devFee = _base.devFeeOnBuy;
_buyBackFee = _base.buyBackFeeOnBuy;
_stakingFee = _base.stakingFeeOnBuy;
_holdersFee = _base.holdersFeeOnBuy;
}
_totalFee = _liquidityFee + _devFee + _buyBackFee + _stakingFee + _holdersFee;
emit FeesApplied(_liquidityFee, _devFee, _buyBackFee, _stakingFee, _holdersFee, _totalFee);
}
function _setCustomSellTaxPeriod(
CustomTaxPeriod storage map,
uint8 _liquidityFeeOnSell,
uint8 _devFeeOnSell,
uint8 _buyBackFeeOnSell,
uint8 _stakingFeeOnSell,
uint8 _holdersFeeOnSell
) private {
if (map.liquidityFeeOnSell != _liquidityFeeOnSell) {
emit CustomTaxPeriodChange(
_liquidityFeeOnSell,
map.liquidityFeeOnSell,
"liquidityFeeOnSell",
map.periodName
);
map.liquidityFeeOnSell = _liquidityFeeOnSell;
}
if (map.devFeeOnSell != _devFeeOnSell) {
emit CustomTaxPeriodChange(
_devFeeOnSell,
map.devFeeOnSell,
"devFeeOnSell",
map.periodName
);
map.devFeeOnSell = _devFeeOnSell;
}
if (map.buyBackFeeOnSell != _buyBackFeeOnSell) {
emit CustomTaxPeriodChange(
_buyBackFeeOnSell,
map.buyBackFeeOnSell,
"buyBackFeeOnSell",
map.periodName
);
map.buyBackFeeOnSell = _buyBackFeeOnSell;
}
if (map.stakingFeeOnSell != _stakingFeeOnSell) {
emit CustomTaxPeriodChange(
_stakingFeeOnSell,
map.stakingFeeOnSell,
"stakingFeeOnSell",
map.periodName
);
map.stakingFeeOnSell = _stakingFeeOnSell;
}
if (map.holdersFeeOnSell != _holdersFeeOnSell) {
emit CustomTaxPeriodChange(
_holdersFeeOnSell,
map.holdersFeeOnSell,
"holdersFeeOnSell",
map.periodName
);
map.holdersFeeOnSell = _holdersFeeOnSell;
}
}
function _setCustomBuyTaxPeriod(
CustomTaxPeriod storage map,
uint8 _liquidityFeeOnBuy,
uint8 _devFeeOnBuy,
uint8 _buyBackFeeOnBuy,
uint8 _stakingFeeOnBuy,
uint8 _holdersFeeOnBuy
) private {
if (map.liquidityFeeOnBuy != _liquidityFeeOnBuy) {
emit CustomTaxPeriodChange(
_liquidityFeeOnBuy,
map.liquidityFeeOnBuy,
"liquidityFeeOnBuy",
map.periodName
);
map.liquidityFeeOnBuy = _liquidityFeeOnBuy;
}
if (map.devFeeOnBuy != _devFeeOnBuy) {
emit CustomTaxPeriodChange(
_devFeeOnBuy,
map.devFeeOnBuy,
"devFeeOnBuy",
map.periodName
);
map.devFeeOnBuy = _devFeeOnBuy;
}
if (map.buyBackFeeOnBuy != _buyBackFeeOnBuy) {
emit CustomTaxPeriodChange(
_buyBackFeeOnBuy,
map.buyBackFeeOnBuy,
"buyBackFeeOnBuy",
map.periodName
);
map.buyBackFeeOnBuy = _buyBackFeeOnBuy;
}
if (map.stakingFeeOnBuy != _stakingFeeOnBuy) {
emit CustomTaxPeriodChange(
_stakingFeeOnBuy,
map.stakingFeeOnBuy,
"stakingFeeOnBuy",
map.periodName
);
map.stakingFeeOnBuy = _stakingFeeOnBuy;
}
if (map.holdersFeeOnBuy != _holdersFeeOnBuy) {
emit CustomTaxPeriodChange(
_holdersFeeOnBuy,
map.holdersFeeOnBuy,
"holdersFeeOnBuy",
map.periodName
);
map.holdersFeeOnBuy = _holdersFeeOnBuy;
}
}
function _swapAndLiquify() private {
uint256 contractBalance = balanceOf(address(this));
uint256 initialETHBalance = address(this).balance;
uint256 amountToLiquify = (contractBalance * _liquidityFee) / _totalFee / 2;
uint256 amountForStaking = (contractBalance * _stakingFee) / _totalFee;
uint256 amountToSwap = contractBalance - (amountToLiquify + amountForStaking);
_swapTokensForETH(amountToSwap);
uint256 ETHBalanceAfterSwap = address(this).balance - initialETHBalance;
uint256 totalETHFee = _totalFee - (_liquidityFee / 2) - _stakingFee;
uint256 amountETHLiquidity = (ETHBalanceAfterSwap * _liquidityFee) / totalETHFee / 2;
uint256 amountETHBuyBack = (ETHBalanceAfterSwap * _buyBackFee) / totalETHFee;
uint256 amountETHDev = (ETHBalanceAfterSwap * _devFee) / totalETHFee;
uint256 amountETHHolders = ETHBalanceAfterSwap - (amountETHLiquidity + amountETHBuyBack + amountETHDev);
Address.sendValue(payable(buyBackWallet),amountETHBuyBack);
Address.sendValue(payable(devWallet),amountETHDev);
if (amountToLiquify > 0) {
_addLiquidity(amountToLiquify, amountETHLiquidity);
emit SwapAndLiquify(amountToSwap, amountETHLiquidity, amountToLiquify);
}
bool success = IERC20(address(this)).transfer(address(stakingAddress), amountForStaking);
(success, ) = address(dividendTracker).call{ value: amountETHHolders }("");
if (success) {
emit DividendsSent(amountETHHolders);
}
}
function _swapTokensForETH(uint256 tokenAmount) private {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
1, // accept any amount of ETH
path,
address(this),
block.timestamp
);
}
function _addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.addLiquidityETH{ value: ethAmount }(
address(this),
tokenAmount,
1, // slippage is unavoidable
1, // slippage is unavoidable
liquidityWallet,
block.timestamp
);
}
}
contract BrewlabsDividendTracker is DividendPayingToken {
using SafeMath for uint256;
using SafeMathInt for int256;
using IterableMapping for IterableMapping.Map;
IterableMapping.Map private tokenHoldersMap;
mapping(address => bool) public excludedFromDividends;
mapping(address => uint256) public lastClaimTimes;
uint256 public claimWait;
uint256 public 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("Brewlabs_Dividend_Tracker", "Brewlabs_Dividend_Tracker") {
claimWait = 3600;
minimumTokenBalanceForDividends = 0 * (10**18);
}
function setRewardToken(address token) external onlyOwner {
_setRewardToken(token);
}
function setUniswapRouter(address router) external onlyOwner {
_setUniswapRouter(router);
}
function _transfer(
address,
address,
uint256
) internal pure override {
require(false, "Brewlabs_Dividend_Tracker: No transfers allowed");
}
function excludeFromDividends(address account) external onlyOwner {
require(!excludedFromDividends[account]);
excludedFromDividends[account] = true;
_setBalance(account, 0);
tokenHoldersMap.remove(account);
emit ExcludeFromDividends(account);
}
function setTokenBalanceForDividends(uint256 newValue) external onlyOwner {
require(
minimumTokenBalanceForDividends != newValue,
"Brewlabs_Dividend_Tracker: minimumTokenBalanceForDividends already the value of 'newValue'."
);
minimumTokenBalanceForDividends = newValue;
}
function getNumberOfTokenHolders() external view returns (uint256) {
return tokenHoldersMap.keys.length;
}
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 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;
}
}