Contract Source Code:
/*
ok.let's.go. ($OKLG)
Website = https://oklg.io
Telegram = https://t.me/ok_lg
Twitter = https://twitter.com/oklgio
*/
// SPDX-License-Identifier: Unlicensed
pragma solidity ^0.8.4;
import '@openzeppelin/contracts/token/ERC20/IERC20.sol';
import '@openzeppelin/contracts/utils/math/SafeMath.sol';
import '@openzeppelin/contracts/access/Ownable.sol';
import '@openzeppelin/contracts/utils/Address.sol';
import '@uniswap/v2-core/contracts/interfaces/IUniswapV2Factory.sol';
import '@uniswap/v2-core/contracts/interfaces/IUniswapV2Pair.sol';
import '@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol';
import './interfaces/IConditional.sol';
contract OKLG is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
address payable public treasuryWallet =
payable(0xDb3AC91239b79Fae75c21E1f75a189b1D75dD906);
address public constant deadAddress =
0x000000000000000000000000000000000000dEaD;
mapping(address => uint256) private _rOwned;
mapping(address => uint256) private _tOwned;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _isSniper;
address[] private _confirmedSnipers;
uint256 public rewardsClaimTimeSeconds = 60 * 60 * 4; // 4 hours
mapping(address => uint256) private _rewardsLastClaim;
mapping(address => bool) private _isExcludedFee;
mapping(address => bool) private _isExcludedReward;
address[] private _excluded;
string private constant _name = 'ok.lets.go.';
string private constant _symbol = 'OKLG';
uint8 private constant _decimals = 9;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 420690000000 * 10**_decimals;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 public reflectionFee = 2;
uint256 private _previousReflectFee = reflectionFee;
uint256 public treasuryFee = 4;
uint256 private _previousTreasuryFee = treasuryFee;
uint256 public ethRewardsFee = 2;
uint256 private _previousETHRewardsFee = ethRewardsFee;
uint256 public ethRewardsBalance;
uint256 public buybackFee = 2;
uint256 private _previousBuybackFee = buybackFee;
address public buybackTokenAddress = address(this);
address public buybackReceiver = deadAddress;
uint256 public feeSellMultiplier = 1;
uint256 public feeRate = 2;
uint256 public launchTime;
uint256 public boostRewardsPercent = 50;
address public boostRewardsContract;
address public feeExclusionContract;
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
mapping(address => bool) private _isUniswapPair;
// PancakeSwap: 0x10ED43C718714eb63d5aA57B78B54704E256024E
// Uniswap V2: 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
address private constant _uniswapRouterAddress =
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
bool private _inSwapAndLiquify;
bool private _isSelling;
bool private _tradingOpen = false;
bool private _transferOpen = false;
event SendETHRewards(address to, uint256 amountETH);
event SendTokenRewards(address to, address token, uint256 amount);
event SwapETHForTokens(address whereTo, uint256 amountIn, address[] path);
event SwapTokensForETH(uint256 amountIn, address[] path);
event SwapAndLiquify(
uint256 tokensSwappedForEth,
uint256 ethAddedForLp,
uint256 tokensAddedForLp
);
modifier lockTheSwap() {
_inSwapAndLiquify = true;
_;
_inSwapAndLiquify = false;
}
constructor() {
_rOwned[_msgSender()] = _rTotal;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function initContract() external onlyOwner {
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(
_uniswapRouterAddress
);
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(
address(this),
_uniswapV2Router.WETH()
);
uniswapV2Router = _uniswapV2Router;
_isExcludedFee[owner()] = true;
_isExcludedFee[address(this)] = true;
}
function openTrading() external onlyOwner {
treasuryFee = _previousTreasuryFee;
ethRewardsFee = _previousETHRewardsFee;
reflectionFee = _previousReflectFee;
buybackFee = _previousBuybackFee;
_tradingOpen = true;
_transferOpen = true;
launchTime = block.timestamp;
}
function name() external pure returns (string memory) {
return _name;
}
function symbol() external pure returns (string memory) {
return _symbol;
}
function decimals() external pure returns (uint8) {
return _decimals;
}
function totalSupply() external pure override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
if (_isExcludedReward[account]) return _tOwned[account];
return tokenFromReflection(_rOwned[account]);
}
function transfer(address recipient, uint256 amount)
external
override
returns (bool)
{
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender)
external
view
override
returns (uint256)
{
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount)
external
override
returns (bool)
{
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(
address sender,
address recipient,
uint256 amount
) external override returns (bool) {
_transfer(sender, recipient, amount);
_approve(
sender,
_msgSender(),
_allowances[sender][_msgSender()].sub(
amount,
'ERC20: transfer amount exceeds allowance'
)
);
return true;
}
function increaseAllowance(address spender, uint256 addedValue)
external
virtual
returns (bool)
{
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender].add(addedValue)
);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue)
external
virtual
returns (bool)
{
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender].sub(
subtractedValue,
'ERC20: decreased allowance below zero'
)
);
return true;
}
function getLastETHRewardsClaim(address wallet)
external
view
returns (uint256)
{
return _rewardsLastClaim[wallet];
}
function totalFees() external view returns (uint256) {
return _tFeeTotal;
}
function deliver(uint256 tAmount) external {
address sender = _msgSender();
require(
!_isExcludedReward[sender],
'Excluded addresses cannot call this function'
);
(uint256 rAmount, , , , , ) = _getValues(sender, tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rTotal = _rTotal.sub(rAmount);
_tFeeTotal = _tFeeTotal.add(tAmount);
}
function reflectionFromToken(uint256 tAmount, bool deductTransferFee)
external
view
returns (uint256)
{
require(tAmount <= _tTotal, 'Amount must be less than supply');
if (!deductTransferFee) {
(uint256 rAmount, , , , , ) = _getValues(address(0), tAmount);
return rAmount;
} else {
(, uint256 rTransferAmount, , , , ) = _getValues(address(0), tAmount);
return rTransferAmount;
}
}
function tokenFromReflection(uint256 rAmount) public view returns (uint256) {
require(rAmount <= _rTotal, 'Amount must be less than total reflections');
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
function excludeFromReward(address account) external onlyOwner {
require(!_isExcludedReward[account], 'Account is already excluded');
if (_rOwned[account] > 0) {
_tOwned[account] = tokenFromReflection(_rOwned[account]);
}
_isExcludedReward[account] = true;
_excluded.push(account);
}
function includeInReward(address account) external onlyOwner {
require(_isExcludedReward[account], 'Account is already included');
for (uint256 i = 0; i < _excluded.length; i++) {
if (_excluded[i] == account) {
_excluded[i] = _excluded[_excluded.length - 1];
_tOwned[account] = 0;
_isExcludedReward[account] = false;
_excluded.pop();
break;
}
}
}
function _approve(
address owner,
address spender,
uint256 amount
) private {
require(owner != address(0), 'ERC20: approve from the zero address');
require(spender != address(0), 'ERC20: approve to the zero address');
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) private {
require(from != address(0), 'ERC20: transfer from the zero address');
require(to != address(0), 'ERC20: transfer to the zero address');
require(amount > 0, 'Transfer amount must be greater than zero');
require(!_isSniper[to], 'Stop sniping!');
require(!_isSniper[from], 'Stop sniping!');
require(!_isSniper[_msgSender()], 'Stop sniping!');
require(
_transferOpen || from == owner(),
'transferring tokens is not currently allowed'
);
// reset receiver's timer to prevent users buying and
// immmediately transferring to buypass timer
_rewardsLastClaim[to] = block.timestamp;
bool excludedFromFee = false;
// buy
if (
(from == uniswapV2Pair || _isUniswapPair[from]) &&
to != address(uniswapV2Router)
) {
// normal buy, check for snipers
if (!isExcludedFromFee(to)) {
require(_tradingOpen, 'Trading not yet enabled.');
// antibot
if (block.timestamp == launchTime) {
_isSniper[to] = true;
_confirmedSnipers.push(to);
}
_rewardsLastClaim[from] = block.timestamp;
} else {
// set excluded flag for takeFee below since buyer is excluded
excludedFromFee = true;
}
}
// sell
if (
!_inSwapAndLiquify &&
_tradingOpen &&
(to == uniswapV2Pair || _isUniswapPair[to])
) {
uint256 _contractTokenBalance = balanceOf(address(this));
if (_contractTokenBalance > 0) {
if (
_contractTokenBalance > balanceOf(uniswapV2Pair).mul(feeRate).div(100)
) {
_contractTokenBalance = balanceOf(uniswapV2Pair).mul(feeRate).div(
100
);
}
_swapTokens(_contractTokenBalance);
}
_rewardsLastClaim[from] = block.timestamp;
_isSelling = true;
excludedFromFee = isExcludedFromFee(from);
}
bool takeFee = false;
// take fee only on swaps
if (
(from == uniswapV2Pair ||
to == uniswapV2Pair ||
_isUniswapPair[to] ||
_isUniswapPair[from]) && !excludedFromFee
) {
takeFee = true;
}
_tokenTransfer(from, to, amount, takeFee);
_isSelling = false;
}
function _swapTokens(uint256 _contractTokenBalance) private lockTheSwap {
uint256 ethBalanceBefore = address(this).balance;
_swapTokensForEth(_contractTokenBalance);
uint256 ethBalanceAfter = address(this).balance;
uint256 ethBalanceUpdate = ethBalanceAfter.sub(ethBalanceBefore);
uint256 _liquidityFeeTotal = _liquidityFeeAggregate(address(0));
ethRewardsBalance += ethBalanceUpdate.mul(ethRewardsFee).div(
_liquidityFeeTotal
);
// send ETH to treasury address
uint256 treasuryETHBalance = ethBalanceUpdate.mul(treasuryFee).div(
_liquidityFeeTotal
);
if (treasuryETHBalance > 0) {
_sendETHToTreasury(treasuryETHBalance);
}
// buy back
uint256 buybackETHBalance = ethBalanceUpdate.mul(buybackFee).div(
_liquidityFeeTotal
);
if (buybackETHBalance > 0) {
_buyBackTokens(buybackETHBalance);
}
}
function _sendETHToTreasury(uint256 amount) private {
treasuryWallet.call{ value: amount }('');
}
function _buyBackTokens(uint256 amount) private {
// generate the uniswap pair path of token -> weth
address[] memory path = new address[](2);
path[0] = uniswapV2Router.WETH();
path[1] = buybackTokenAddress;
// make the swap
uniswapV2Router.swapExactETHForTokensSupportingFeeOnTransferTokens{
value: amount
}(
0, // accept any amount of tokens
path,
buybackReceiver,
block.timestamp
);
emit SwapETHForTokens(buybackReceiver, amount, path);
}
function _swapTokensForEth(uint256 tokenAmount) private {
// generate the uniswap pair path of token -> weth
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
// make the swap
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0, // accept any amount of ETH
path,
address(this), // the contract
block.timestamp
);
emit SwapTokensForETH(tokenAmount, path);
}
function _tokenTransfer(
address sender,
address recipient,
uint256 amount,
bool takeFee
) private {
if (!takeFee) _removeAllFee();
if (_isExcludedReward[sender] && !_isExcludedReward[recipient]) {
_transferFromExcluded(sender, recipient, amount);
} else if (!_isExcludedReward[sender] && _isExcludedReward[recipient]) {
_transferToExcluded(sender, recipient, amount);
} else if (_isExcludedReward[sender] && _isExcludedReward[recipient]) {
_transferBothExcluded(sender, recipient, amount);
} else {
_transferStandard(sender, recipient, amount);
}
if (!takeFee) _restoreAllFee();
}
function _transferStandard(
address sender,
address recipient,
uint256 tAmount
) private {
(
uint256 rAmount,
uint256 rTransferAmount,
uint256 rFee,
uint256 tTransferAmount,
uint256 tFee,
uint256 tLiquidity
) = _getValues(sender, tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferToExcluded(
address sender,
address recipient,
uint256 tAmount
) private {
(
uint256 rAmount,
uint256 rTransferAmount,
uint256 rFee,
uint256 tTransferAmount,
uint256 tFee,
uint256 tLiquidity
) = _getValues(sender, tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferFromExcluded(
address sender,
address recipient,
uint256 tAmount
) private {
(
uint256 rAmount,
uint256 rTransferAmount,
uint256 rFee,
uint256 tTransferAmount,
uint256 tFee,
uint256 tLiquidity
) = _getValues(sender, tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferBothExcluded(
address sender,
address recipient,
uint256 tAmount
) private {
(
uint256 rAmount,
uint256 rTransferAmount,
uint256 rFee,
uint256 tTransferAmount,
uint256 tFee,
uint256 tLiquidity
) = _getValues(sender, tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
function _getValues(address seller, uint256 tAmount)
private
view
returns (
uint256,
uint256,
uint256,
uint256,
uint256,
uint256
)
{
(uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getTValues(
seller,
tAmount
);
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(
tAmount,
tFee,
tLiquidity,
_getRate()
);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tLiquidity);
}
function _getTValues(address seller, uint256 tAmount)
private
view
returns (
uint256,
uint256,
uint256
)
{
uint256 tFee = _calculateReflectFee(tAmount);
uint256 tLiquidity = _calculateLiquidityFee(seller, tAmount);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tLiquidity);
return (tTransferAmount, tFee, tLiquidity);
}
function _getRValues(
uint256 tAmount,
uint256 tFee,
uint256 tLiquidity,
uint256 currentRate
)
private
pure
returns (
uint256,
uint256,
uint256
)
{
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rLiquidity = tLiquidity.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rLiquidity);
return (rAmount, rTransferAmount, rFee);
}
function _getRate() private view returns (uint256) {
(uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
return rSupply.div(tSupply);
}
function _getCurrentSupply() private view returns (uint256, uint256) {
uint256 rSupply = _rTotal;
uint256 tSupply = _tTotal;
for (uint256 i = 0; i < _excluded.length; i++) {
if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply)
return (_rTotal, _tTotal);
rSupply = rSupply.sub(_rOwned[_excluded[i]]);
tSupply = tSupply.sub(_tOwned[_excluded[i]]);
}
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
function _takeLiquidity(uint256 tLiquidity) private {
uint256 currentRate = _getRate();
uint256 rLiquidity = tLiquidity.mul(currentRate);
_rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity);
if (_isExcludedReward[address(this)])
_tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity);
}
function _calculateReflectFee(uint256 _amount)
private
view
returns (uint256)
{
return _amount.mul(reflectionFee).div(10**2);
}
function _liquidityFeeAggregate(address seller)
private
view
returns (uint256)
{
uint256 feeMultiplier = _isSelling && !canClaimRewards(seller)
? feeSellMultiplier
: 1;
return (treasuryFee.add(ethRewardsFee).add(buybackFee)).mul(feeMultiplier);
}
function _calculateLiquidityFee(address seller, uint256 _amount)
private
view
returns (uint256)
{
return _amount.mul(_liquidityFeeAggregate(seller)).div(10**2);
}
function _removeAllFee() private {
if (
reflectionFee == 0 &&
treasuryFee == 0 &&
ethRewardsFee == 0 &&
buybackFee == 0
) return;
_previousReflectFee = reflectionFee;
_previousTreasuryFee = treasuryFee;
_previousETHRewardsFee = ethRewardsFee;
_previousBuybackFee = buybackFee;
reflectionFee = 0;
treasuryFee = 0;
ethRewardsFee = 0;
buybackFee = 0;
}
function _restoreAllFee() private {
reflectionFee = _previousReflectFee;
treasuryFee = _previousTreasuryFee;
ethRewardsFee = _previousETHRewardsFee;
buybackFee = _previousBuybackFee;
}
function getSellSlippage(address seller) external view returns (uint256) {
uint256 feeAgg = treasuryFee.add(ethRewardsFee).add(buybackFee);
return
isExcludedFromFee(seller) ? 0 : !canClaimRewards(seller)
? feeAgg.mul(feeSellMultiplier)
: feeAgg;
}
function isUniswapPair(address _pair) external view returns (bool) {
if (_pair == uniswapV2Pair) return true;
return _isUniswapPair[_pair];
}
function eligibleForRewardBooster(address wallet) public view returns (bool) {
return
boostRewardsContract != address(0) &&
IConditional(boostRewardsContract).passesTest(wallet);
}
function isExcludedFromFee(address account) public view returns (bool) {
return
_isExcludedFee[account] ||
(feeExclusionContract != address(0) &&
IConditional(feeExclusionContract).passesTest(account));
}
function isExcludedFromReward(address account) external view returns (bool) {
return _isExcludedReward[account];
}
function excludeFromFee(address account) external onlyOwner {
_isExcludedFee[account] = true;
}
function includeInFee(address account) external onlyOwner {
_isExcludedFee[account] = false;
}
function setRewardsClaimTimeSeconds(uint256 _seconds) external onlyOwner {
rewardsClaimTimeSeconds = _seconds;
}
function setReflectionFeePercent(uint256 _newFee) external onlyOwner {
require(_newFee <= 100, 'fee cannot exceed 100%');
reflectionFee = _newFee;
}
function setTreasuryFeePercent(uint256 _newFee) external onlyOwner {
require(_newFee <= 100, 'fee cannot exceed 100%');
treasuryFee = _newFee;
}
function setETHRewardsFeeFeePercent(uint256 _newFee) external onlyOwner {
require(_newFee <= 100, 'fee cannot exceed 100%');
ethRewardsFee = _newFee;
}
function setFeeSellMultiplier(uint256 multiplier) external onlyOwner {
require(
multiplier > 0 && multiplier <= 10,
'must be greater than 0 and less than or equal to 10'
);
feeSellMultiplier = multiplier;
}
function setBuybackFeePercent(uint256 _newFee) external onlyOwner {
require(_newFee <= 100, 'fee cannot exceed 100%');
buybackFee = _newFee;
}
function setTreasuryAddress(address _treasuryWallet) external onlyOwner {
treasuryWallet = payable(_treasuryWallet);
}
function setBuybackTokenAddress(address _tokenAddress) external onlyOwner {
buybackTokenAddress = _tokenAddress;
}
function setBuybackReceiver(address _receiver) external onlyOwner {
buybackReceiver = _receiver;
}
function addUniswapPair(address _pair) external onlyOwner {
_isUniswapPair[_pair] = true;
}
function removeUniswapPair(address _pair) external onlyOwner {
_isUniswapPair[_pair] = false;
}
function setCanTransfer(bool _canTransfer) external onlyOwner {
_transferOpen = _canTransfer;
}
function setBoostRewardsPercent(uint256 perc) external onlyOwner {
boostRewardsPercent = perc;
}
function setBoostRewardsContract(address _contract) external onlyOwner {
if (_contract != address(0)) {
IConditional _contCheck = IConditional(_contract);
// allow setting to zero address to effectively turn off check logic
require(
_contCheck.passesTest(address(0)) == true ||
_contCheck.passesTest(address(0)) == false,
'contract does not implement interface'
);
}
boostRewardsContract = _contract;
}
function setFeeExclusionContract(address _contract) external onlyOwner {
if (_contract != address(0)) {
IConditional _contCheck = IConditional(_contract);
// allow setting to zero address to effectively turn off check logic
require(
_contCheck.passesTest(address(0)) == true ||
_contCheck.passesTest(address(0)) == false,
'contract does not implement interface'
);
}
feeExclusionContract = _contract;
}
function isRemovedSniper(address account) external view returns (bool) {
return _isSniper[account];
}
function removeSniper(address account) external onlyOwner {
require(account != _uniswapRouterAddress, 'We can not blacklist Uniswap');
require(!_isSniper[account], 'Account is already blacklisted');
_isSniper[account] = true;
_confirmedSnipers.push(account);
}
function amnestySniper(address account) external onlyOwner {
require(_isSniper[account], 'Account is not blacklisted');
for (uint256 i = 0; i < _confirmedSnipers.length; i++) {
if (_confirmedSnipers[i] == account) {
_confirmedSnipers[i] = _confirmedSnipers[_confirmedSnipers.length - 1];
_isSniper[account] = false;
_confirmedSnipers.pop();
break;
}
}
}
function calculateETHRewards(address wallet) public view returns (uint256) {
uint256 baseRewards = ethRewardsBalance.mul(balanceOf(wallet)).div(
_tTotal.sub(balanceOf(deadAddress)) // circulating supply
);
uint256 rewardsWithBooster = eligibleForRewardBooster(wallet)
? baseRewards.add(baseRewards.mul(boostRewardsPercent).div(10**2))
: baseRewards;
return
rewardsWithBooster > ethRewardsBalance ? baseRewards : rewardsWithBooster;
}
function calculateTokenRewards(address wallet, address tokenAddress)
public
view
returns (uint256)
{
IERC20 token = IERC20(tokenAddress);
uint256 contractTokenBalance = token.balanceOf(address(this));
uint256 baseRewards = contractTokenBalance.mul(balanceOf(wallet)).div(
_tTotal.sub(balanceOf(deadAddress)) // circulating supply
);
uint256 rewardsWithBooster = eligibleForRewardBooster(wallet)
? baseRewards.add(baseRewards.mul(boostRewardsPercent).div(10**2))
: baseRewards;
return
rewardsWithBooster > contractTokenBalance
? baseRewards
: rewardsWithBooster;
}
function claimETHRewards() external {
require(
balanceOf(_msgSender()) > 0,
'You must have a balance to claim ETH rewards'
);
require(
canClaimRewards(_msgSender()),
'Must wait claim period before claiming rewards'
);
_rewardsLastClaim[_msgSender()] = block.timestamp;
uint256 rewardsSent = calculateETHRewards(_msgSender());
ethRewardsBalance -= rewardsSent;
_msgSender().call{ value: rewardsSent }('');
emit SendETHRewards(_msgSender(), rewardsSent);
}
function canClaimRewards(address user) public view returns (bool) {
return
block.timestamp > _rewardsLastClaim[user].add(rewardsClaimTimeSeconds);
}
function claimTokenRewards(address token) external {
require(
balanceOf(_msgSender()) > 0,
'You must have a balance to claim rewards'
);
require(
IERC20(token).balanceOf(address(this)) > 0,
'We must have a token balance to claim rewards'
);
require(
canClaimRewards(_msgSender()),
'Must wait claim period before claiming rewards'
);
_rewardsLastClaim[_msgSender()] = block.timestamp;
uint256 rewardsSent = calculateTokenRewards(_msgSender(), token);
IERC20(token).transfer(_msgSender(), rewardsSent);
emit SendTokenRewards(_msgSender(), token, rewardsSent);
}
function setFeeRate(uint256 _rate) external onlyOwner {
feeRate = _rate;
}
function emergencyWithdraw() external onlyOwner {
payable(owner()).send(address(this).balance);
}
// to recieve ETH from uniswapV2Router when swaping
receive() external payable {}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
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);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.
/**
* @dev Wrappers over Solidity's arithmetic operations.
*
* NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler
* now has built in overflow checking.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
// 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 (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
return a + b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
return a * b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator.
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a % b;
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
* @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.
*/
abstract 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() {
_setOwner(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual 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 {
_setOwner(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");
_setOwner(newOwner);
}
function _setOwner(address newOwner) private {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* 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) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
/**
* @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");
(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");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
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);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
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);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
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
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
pragma solidity >=0.5.0;
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;
}
pragma solidity >=0.5.0;
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;
}
pragma solidity >=0.6.2;
import './IUniswapV2Router01.sol';
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;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
/**
* @dev Interface for the Buy Back Reward contract that can be used to build
* custom logic to elevate user rewards
*/
interface IConditional {
/**
* @dev Returns whether a wallet passes the test.
*/
function passesTest(address wallet) external view returns (bool);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
pragma solidity >=0.6.2;
interface IUniswapV2Router01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
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);
}