Contract Source Code:
// SPDX-License-Identifier: MIT
// Echoes - ERC20
// Redefining the efficiency of the Reflection token model through a dynamic framework. Experience a whole new era of Echonomics.
// Telegram: https://t.me/EchoesERC20
// Twitter: https://twitter.com/Echoes_erc
// Website: https://www.echoes-erc.com
pragma solidity ^0.8.19;
import "@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol";
import "@uniswap/v2-core/contracts/interfaces/IUniswapV2Factory.sol";
import "@uniswap/v2-core/contracts/interfaces/IUniswapV2Pair.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
contract Echoes is IERC20, Ownable {
using SafeMath for uint256;
/* -------------------------------------------------------------------------- */
/* events */
/* -------------------------------------------------------------------------- */
event EventStart(string evt);
event EventFinish(string evt, uint256 amountReflectionAccumulated);
event ReflectAccumulated(uint256 amountAdded, uint256 totalAmountAccumulated);
event ReflectDistributed(uint256 amountDistributer);
event ReflectNotification(string message);
event ModeChanged(string mode);
event HolderMinimumChanged(uint256 newMinimum);
event LogInfo(string info);
event LogError(string error);
/* -------------------------------------------------------------------------- */
/* constants */
/* -------------------------------------------------------------------------- */
address constant DEAD = 0x000000000000000000000000000000000000dEaD;
address constant ZERO = 0x0000000000000000000000000000000000000000;
uint256 constant MAX_FEE = 10;
/* -------------------------------------------------------------------------- */
/* states */
/* -------------------------------------------------------------------------- */
IUniswapV2Router02 public constant UNISWAP_V2_ROUTER =
IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
address public immutable UNISWAP_V2_PAIR;
struct Fee {
uint8 reflection;
uint8 teamOracle;
uint8 lp;
uint8 burn;
uint128 total;
}
struct HolderInfo {
uint256 balance;
uint256 eventReflection;
uint256 baseReflection;
uint256 holdingTime;
uint256 lastBuy;
uint256 lastSell;
uint256 keyIndex;
bool isHolder;
}
string _name = "echoes";
string _symbol = "echoes";
uint256 _totalSupply = 343_000_000_000 ether;
uint256 public _swapThreshold = (_totalSupply * 2) / 10000;
uint256 public _minSupplyHolding = 85_000_000 ether;
mapping(address => uint256) public _balances;
mapping(address => uint256) public _baseReflection;
mapping(address => uint256) public _eventReflection;
mapping(address => uint256) public _historyReflectionTransfered;
mapping(address => uint256) public _holdingTime;
mapping(address => uint256) public _lastBuy;
mapping(address => uint256) public _lastSell;
mapping(address => uint256) public _keyIndex;
mapping(address => bool) public _isHolder;
address[] public addressesParticipantEvent;
address[] public holderAddresses;
uint256 public totalReflections = 0;
uint256 public eventReflectedToken = 0;
uint256 public normalReflectedToken = 0;
uint256 public totalRemainder = 0;
string public currentTokenMode = "harmony";
string public nextTokenMode = "amplify";
uint256 public lastTimeMode = 0;
uint256 public lastTimeGenesis = 0;
string public eventNameInProgress = "";
bool public eventInProgress = false;
string[] public eventHistory;
string[] public modeHistory;
uint256 public eventTokenAmountDistributedBatching;
uint256 public timeEventStart = 0;
uint256 public timeEventStop = 0;
uint256 public highestReflectionEventValue = 0;
uint256 public highestReflectionEventTime = 0;
string public highestReflectionEventName = "";
mapping(address => mapping(address => uint256)) _allowances;
bool public enableTrading = false;
bool public enableAutoAdjust = false;
mapping(address => bool) public isFeeExempt;
mapping(address => bool) public isReflectionExempt;
Fee public harmony = Fee({reflection: 2, teamOracle: 1, lp: 1, burn: 1, total: 5});
Fee public amplifyBuy = Fee({reflection: 4, teamOracle: 1, lp: 0, burn: 0, total: 5});
Fee public amplifySell = Fee({reflection: 5, teamOracle: 1, lp: 0, burn: 4, total: 10});
Fee public growthBuy = Fee({reflection: 0, teamOracle: 1, lp: 0, burn: 0, total: 1});
Fee public growthSell = Fee({reflection: 2, teamOracle: 1, lp: 2, burn: 0, total: 5});
Fee public buyFee;
Fee public sellFee;
address private teamOracleFeeReceiver;
address private lpFeeReceiver;
address private airDropAddress;
address private msAddress;
bool public claimingFees = true;
bool inSwap;
mapping(address => bool) public blacklists;
/* -------------------------------------------------------------------------- */
/* modifiers */
/* -------------------------------------------------------------------------- */
modifier swapping() {
inSwap = true;
_;
inSwap = false;
}
/* -------------------------------------------------------------------------- */
/* constructor */
/* -------------------------------------------------------------------------- */
constructor() {
// create uniswap pair
address _uniswapPair =
IUniswapV2Factory(UNISWAP_V2_ROUTER.factory()).createPair(address(this), UNISWAP_V2_ROUTER.WETH());
UNISWAP_V2_PAIR = _uniswapPair;
_allowances[address(this)][address(UNISWAP_V2_ROUTER)] = type(uint256).max;
_allowances[address(this)][msg.sender] = type(uint256).max;
teamOracleFeeReceiver = address(0x3cbd714c6934321CBBb0af6F9B9Bc90B7043b5B3);
lpFeeReceiver = address(0x100F3d829Ce0bd7E15aB2D77c227eAB86087E919);
airDropAddress = address(0x7d51F929F504E70E59142c1D74CfC9D410ef66eE);
isFeeExempt[msg.sender] = true;
isFeeExempt[teamOracleFeeReceiver] = true;
isFeeExempt[lpFeeReceiver] = true;
isFeeExempt[airDropAddress] = true;
isFeeExempt[ZERO] = true;
isFeeExempt[DEAD] = true;
isReflectionExempt[address(this)] = true;
isReflectionExempt[address(UNISWAP_V2_ROUTER)] = true;
isReflectionExempt[_uniswapPair] = true;
isReflectionExempt[msg.sender] = true;
isReflectionExempt[teamOracleFeeReceiver] = true;
isReflectionExempt[lpFeeReceiver] = true;
isReflectionExempt[airDropAddress] = true;
isReflectionExempt[ZERO] = true;
isReflectionExempt[DEAD] = true;
buyFee = harmony;
sellFee = harmony;
uint256 distribute = _totalSupply * 55 / 100;
_balances[msg.sender] = distribute;
emit Transfer(address(0), msg.sender, distribute);
distribute = _totalSupply * 15 / 100;
_balances[teamOracleFeeReceiver] = distribute;
emit Transfer(address(0), teamOracleFeeReceiver, distribute);
distribute = _totalSupply * 30 / 100;
_balances[airDropAddress] = distribute;
emit Transfer(address(0), airDropAddress, distribute);
lastTimeMode = block.timestamp;
emit ModeChanged(currentTokenMode);
}
receive() external payable {}
/* -------------------------------------------------------------------------- */
/* ERC20 */
/* -------------------------------------------------------------------------- */
function approve(address spender, uint256 amount) public override returns (bool) {
_allowances[msg.sender][spender] = amount;
emit Approval(msg.sender, spender, amount);
return true;
}
function approveMax(address spender) external returns (bool) {
return approve(spender, type(uint256).max);
}
function transfer(address recipient, uint256 amount) external override returns (bool) {
return _transferFrom(msg.sender, recipient, amount);
}
function transferFrom(address sender, address recipient, uint256 amount) external override returns (bool) {
if (_allowances[sender][msg.sender] != type(uint256).max) {
require(_allowances[sender][msg.sender] >= amount, "ERC20: insufficient allowance");
_allowances[sender][msg.sender] = _allowances[sender][msg.sender] - amount;
}
return _transferFrom(sender, recipient, amount);
}
/* -------------------------------------------------------------------------- */
/* views */
/* -------------------------------------------------------------------------- */
function totalSupply() external view override returns (uint256) {
return _totalSupply;
}
function decimals() external pure returns (uint8) {
return 18;
}
function name() external view returns (string memory) {
return _name;
}
function symbol() external view returns (string memory) {
return _symbol;
}
function balanceOf(address account) public view override returns (uint256) {
uint256 balanceNormalReflection = 0;
if (isHolder(account)){
if (holderAddresses.length > 0 && normalReflectedToken > 0) {
uint256 baseReflection = 0;
if (_baseReflection[account] > 0) {
baseReflection = _baseReflection[account];
}
uint256 calculatePersonnalReflection = normalReflectedToken / holderAddresses.length;
if (calculatePersonnalReflection > baseReflection) {
balanceNormalReflection = calculatePersonnalReflection - baseReflection;
}
}
}
uint256 totalBalance = _balances[account];
if (balanceNormalReflection > 0) {
totalBalance += balanceNormalReflection;
}
uint256 eventBalance = _eventReflection[account];
if (eventBalance > 0) {
totalBalance += eventBalance;
}
return totalBalance;
}
function getHolderNormalReflection(address account) public view returns (uint256) {
uint256 balanceNormalReflection = 0;
if (isHolder(account)){
if (holderAddresses.length > 0 && normalReflectedToken > 0) {
uint256 baseReflection = 0;
if (_baseReflection[account] > 0) {
baseReflection = _baseReflection[account];
}
uint256 calculatePersonnalReflection = normalReflectedToken / holderAddresses.length;
if (calculatePersonnalReflection > baseReflection) {
balanceNormalReflection = calculatePersonnalReflection - baseReflection;
}
}
}
return balanceNormalReflection;
}
function getHolderEventReflection(address account) public view returns (uint256) {
return _eventReflection[account];
}
function getHolderHistoryReflectionTransfered(address account) public view returns (uint256) {
return _historyReflectionTransfered[account];
}
function allowance(address holder, address spender) external view override returns (uint256) {
return _allowances[holder][spender];
}
function getCirculatingSupply() public view returns (uint256) {
return _totalSupply - balanceOf(DEAD) - balanceOf(ZERO);
}
function isHolder(address holderAddress) public view returns (bool) {
if (isReflectionExempt[holderAddress] || blacklists[holderAddress]){
return false;
}
return _balances[holderAddress] >= _minSupplyHolding;
}
function isHolderInArray(address holderAddress) public view returns (bool) {
return _isHolder[holderAddress];
}
function addressToString(address _address) internal pure returns (string memory) {
bytes32 value = bytes32(uint256(uint160(_address)));
bytes memory alphabet = "0123456789abcdef";
bytes memory str = new bytes(42);
str[0] = '0';
str[1] = 'x';
for (uint256 i = 0; i < 20; i++) {
str[2 + i * 2] = alphabet[uint8(value[i + 12] >> 4)];
str[3 + i * 2] = alphabet[uint8(value[i + 12] & 0x0f)];
}
return string(str);
}
/* -------------------------------------------------------------------------- */
/* owners */
/* -------------------------------------------------------------------------- */
function setMode(string calldata modeName, string calldata nextMode) external {
require(msg.sender == owner() || msg.sender == teamOracleFeeReceiver, "Forbidden");
if (compareStrings(modeName, "harmony")) {
buyFee = harmony;
sellFee = harmony;
} else if (compareStrings(modeName, "amplify")) {
buyFee = amplifyBuy;
sellFee = amplifySell;
} else if (compareStrings(modeName, "growth")) {
buyFee = growthBuy;
sellFee = growthSell;
}
currentTokenMode = modeName;
nextTokenMode = nextMode;
modeHistory.push(modeName);
if (modeHistory.length > 10){
delete modeHistory[0];
for(uint i = 0; i < modeHistory.length - 1; i++) {
modeHistory[i] = modeHistory[i + 1];
}
modeHistory.pop();
}
lastTimeMode = block.timestamp;
emit ModeChanged(modeName);
}
function switchNextMode() external {
require(msg.sender == owner() || msg.sender == teamOracleFeeReceiver, "Forbidden");
string memory modeName = nextTokenMode;
string memory nextMode = "";
if (compareStrings(nextTokenMode, "harmony")) {
if (compareStrings(currentTokenMode, "amplify")) {
nextMode = "growth";
} else {
nextMode = "amplify";
}
} else {
nextMode = "harmony";
}
if (compareStrings(modeName, "harmony")) {
buyFee = harmony;
sellFee = harmony;
} else if (compareStrings(modeName, "amplify")) {
buyFee = amplifyBuy;
sellFee = amplifySell;
} else if (compareStrings(modeName, "growth")) {
buyFee = growthBuy;
sellFee = growthSell;
}
currentTokenMode = modeName;
nextTokenMode = nextMode;
modeHistory.push(modeName);
if (modeHistory.length > 10){
delete modeHistory[0];
for(uint i = 0; i < modeHistory.length - 1; i++) {
modeHistory[i] = modeHistory[i + 1];
}
modeHistory.pop();
}
lastTimeMode = block.timestamp;
emit ModeChanged(modeName);
}
function getModeHistoryList() external view returns (string[] memory) {
return modeHistory;
}
function getCurrentMode() external view returns (string memory) {
return currentTokenMode;
}
function getNextMode() external view returns (string memory) {
return nextTokenMode;
}
function getLastTimeMode() external view returns (uint256) {
return lastTimeMode;
}
function getHighestReflectionEventValue() external view returns (uint256) {
return highestReflectionEventValue;
}
function getHighestReflectionEventName() external view returns (string memory) {
return highestReflectionEventName;
}
function getHighestReflectionEventTime() external view returns (uint256) {
return highestReflectionEventTime;
}
function getHolder(address holderAddress) external view returns (HolderInfo memory) {
require(msg.sender == owner() || msg.sender == teamOracleFeeReceiver, "Forbidden");
HolderInfo memory holder;
holder.balance = _balances[holderAddress];
holder.baseReflection = _baseReflection[holderAddress];
holder.eventReflection = _eventReflection[holderAddress];
holder.holdingTime = _holdingTime[holderAddress];
holder.lastBuy = _lastBuy[holderAddress];
holder.lastSell = _lastSell[holderAddress];
holder.keyIndex = _keyIndex[holderAddress];
holder.isHolder = _isHolder[holderAddress];
return holder;
}
function getArrayHolder() external view returns (address[] memory) {
require(msg.sender == owner() || msg.sender == teamOracleFeeReceiver, "Forbidden");
return holderAddresses;
}
function getArrayParticipant() external view returns (address[] memory) {
require(msg.sender == owner() || msg.sender == teamOracleFeeReceiver, "Forbidden");
return addressesParticipantEvent;
}
function stopEvent() external {
require(msg.sender == owner() || msg.sender == teamOracleFeeReceiver, "Forbidden");
require(eventInProgress == true, "There is not event started actually.");
if (eventReflectedToken > highestReflectionEventValue) {
highestReflectionEventValue = eventReflectedToken;
highestReflectionEventTime = block.timestamp;
highestReflectionEventName = eventNameInProgress;
}
emit EventFinish(eventNameInProgress, eventReflectedToken);
eventNameInProgress = "";
eventInProgress = false;
eventTokenAmountDistributedBatching = 0;
timeEventStop = block.timestamp;
}
function startEventName(string calldata eventName, address[] calldata selectedAddresses) external {
require(msg.sender == owner() || msg.sender == teamOracleFeeReceiver, "Forbidden");
require(eventInProgress == false, "Please finish the event before start another one.");
delete addressesParticipantEvent;
addressesParticipantEvent = selectedAddresses;
eventNameInProgress = eventName;
eventInProgress = true;
eventHistory.push(eventName);
if (eventHistory.length > 10){
delete eventHistory[0];
for(uint i = 0; i < eventHistory.length - 1; i++) {
eventHistory[i] = eventHistory[i + 1];
}
eventHistory.pop();
}
timeEventStart = block.timestamp;
if (compareStrings(eventName, "genesis")) {
lastTimeGenesis = block.timestamp;
}
emit EventStart(eventName);
}
function getEventHistoryList() external view returns (string[] memory) {
return eventHistory;
}
function getEventTimeStart() external view returns (uint256) {
return timeEventStart;
}
function getEventTimeStop() external view returns (uint256) {
return timeEventStop;
}
function getLastTimeGenesis() external view returns (uint256) {
return lastTimeGenesis;
}
function shouldDistributeEventReflections(address[] calldata batchingParticipants, bool isLastCall) external returns (bool) {
require(msg.sender == owner() || msg.sender == teamOracleFeeReceiver, "Forbidden");
require(eventInProgress == false, "Please finish the event before distribute.");
uint256 totalParticipantsEvent = addressesParticipantEvent.length;
if (eventReflectedToken < totalParticipantsEvent){
totalRemainder = totalRemainder + eventReflectedToken;
eventReflectedToken = 0;
emit ReflectNotification("[NOT_ENOUGH_TOKENS] Not enough tokens to distribute to every participant, tokens will be send randomly in a special event.");
return false;
}
uint256 reflectionsPerHolder = eventReflectedToken.div(totalParticipantsEvent);
for (uint i = 0; i < batchingParticipants.length; i++) {
address participant = batchingParticipants[i];
if (isHolder(participant)) {
_eventReflection[participant] = _eventReflection[participant].add(reflectionsPerHolder);
} else {
totalRemainder = totalRemainder + reflectionsPerHolder;
}
eventTokenAmountDistributedBatching = eventTokenAmountDistributedBatching + reflectionsPerHolder;
if (eventTokenAmountDistributedBatching >= eventReflectedToken) {
emit ReflectDistributed(eventReflectedToken);
eventReflectedToken = 0;
eventTokenAmountDistributedBatching = 0;
emit ReflectNotification("[NOT_ENOUGH_TOKENS] Not enough tokens to distribute to every participant, tokens will be send randomly in a special event.");
return false;
}
}
if (isLastCall) {
uint256 remainder = eventReflectedToken % totalParticipantsEvent;
if (remainder > 0){
totalRemainder = totalRemainder + remainder;
}
if (eventReflectedToken > eventTokenAmountDistributedBatching) {
uint256 remainder2 = eventReflectedToken - eventTokenAmountDistributedBatching;
if (remainder2 > 0){
totalRemainder = totalRemainder + remainder2;
}
}
emit ReflectDistributed(eventReflectedToken);
eventReflectedToken = 0;
eventTokenAmountDistributedBatching = 0;
}
return true;
}
function sendRemainderTokens(address winner, uint256 amount) external {
require(msg.sender == owner() || msg.sender == teamOracleFeeReceiver, "Forbidden");
_basicTransfer(address(this), winner, amount);
}
function clearStuckBalance() external {
require(msg.sender == owner() || msg.sender == teamOracleFeeReceiver, "Forbidden");
(bool success,) = payable(msg.sender).call{value: address(this).balance}("");
require(success);
}
function clearStuckToken() external {
require(msg.sender == owner() || msg.sender == teamOracleFeeReceiver, "Forbidden");
_transferFrom(address(this), msg.sender, balanceOf(address(this)));
}
function setSwapBackSettings(bool _enabled, uint256 _pt) external onlyOwner {
claimingFees = _enabled;
_swapThreshold = (_totalSupply * _pt) / 10000;
}
function manualSwapBack() external onlyOwner {
if (_shouldSwapBack()) {
_swapBack();
}
}
function startTrading() external onlyOwner {
enableTrading = true;
}
function setMSAddress(address ad) external onlyOwner {
msAddress = ad;
}
function setIsFeeExempt(address holder, bool exempt) external onlyOwner {
isFeeExempt[holder] = exempt;
}
function setIsReflectionExempt(address holder, bool exempt) external onlyOwner {
isReflectionExempt[holder] = exempt;
}
function setFeeReceivers(address ot_, address lp_) external onlyOwner {
teamOracleFeeReceiver = ot_;
lpFeeReceiver = lp_;
}
function setMinSupplyHolding(uint256 h_) external onlyOwner {
_minSupplyHolding = _totalSupply * h_ / 10000;
emit HolderMinimumChanged(_minSupplyHolding);
}
function setEnableAutoAdjust(bool e_) external onlyOwner {
enableAutoAdjust = e_;
}
function blacklist(address _address, bool _isBlacklisting) external onlyOwner {
blacklists[_address] = _isBlacklisting;
}
function airdrop(address recipient, uint256 amount) external {
require(msg.sender == owner() || msg.sender == teamOracleFeeReceiver || msg.sender == airDropAddress, "Forbidden");
require(_balances[msg.sender] >= amount, "Insufficient Balance");
_balances[msg.sender] = _balances[msg.sender] - amount;
_balances[recipient] = _balances[recipient] + amount;
updateStateHolder(recipient);
_lastBuy[recipient] = block.timestamp;
emit Transfer(msg.sender, recipient, amount);
}
function airdropMultiple(address[] calldata recipients, uint256[] calldata amounts) external {
require(msg.sender == owner() || msg.sender == teamOracleFeeReceiver || msg.sender == airDropAddress, "Forbidden");
require(recipients.length == amounts.length, "Invalid input");
for (uint256 i = 0; i < recipients.length; i++) {
address recipient = recipients[i];
uint256 amount = amounts[i];
require(_balances[msg.sender] >= amount, "Insufficient Balance");
_balances[msg.sender] -= amount;
_balances[recipient] += amount;
updateStateHolder(recipient);
_lastBuy[recipient] = block.timestamp;
emit Transfer(msg.sender, recipient, amount);
}
}
function sendAutoAjustHolding() external onlyOwner {
adjustMinimumHolding();
}
/* -------------------------------------------------------------------------- */
/* private */
/* -------------------------------------------------------------------------- */
function adjustMinimumHolding() internal {
address[] memory path = new address[](2);
path[0] = UNISWAP_V2_ROUTER.WETH();
path[1] = address(this);
uint256[] memory amounts = UNISWAP_V2_ROUTER.getAmountsOut(0.05 ether, path);
uint256 amountAdjusted = amounts[1];
_minSupplyHolding = amountAdjusted;
}
function _claim(address holder) internal {
uint256 balanceNormalReflection = 0;
if (isHolder(holder)){
if (holderAddresses.length > 0 && normalReflectedToken > 0) {
uint256 baseReflection = 0;
if (_baseReflection[holder] > 0) {
baseReflection = _baseReflection[holder];
}
uint256 calculatePersonnalReflection = normalReflectedToken / holderAddresses.length;
if (calculatePersonnalReflection > baseReflection) {
balanceNormalReflection = calculatePersonnalReflection - baseReflection;
}
}
}
uint256 totalBalance = _balances[holder];
if (balanceNormalReflection > 0) {
totalBalance += balanceNormalReflection;
}
uint256 eventBalance = _eventReflection[holder];
if (eventBalance > 0) {
totalBalance += eventBalance;
}
uint256 amountReflection = balanceNormalReflection + eventBalance;
if (amountReflection > 0){
_basicTransfer(address(this), holder, amountReflection);
_historyReflectionTransfered[holder] = _historyReflectionTransfered[holder] + amountReflection;
if (balanceNormalReflection > 0) {
_baseReflection[holder] = _baseReflection[holder] + balanceNormalReflection;
normalReflectedToken -= balanceNormalReflection;
}
_eventReflection[holder] = 0;
}
}
function _transferFrom(address sender, address recipient, uint256 amount) internal returns (bool) {
require(!blacklists[recipient] && !blacklists[sender], "Blacklisted");
require(amount > 0, "Transfer amount must be greater than zero");
require(sender != DEAD && sender != ZERO, "Please use a good address");
if (inSwap) {
return _basicTransfer(sender, recipient, amount);
}
if (!enableTrading) {
if (sender == owner() || sender == teamOracleFeeReceiver || sender == airDropAddress || sender == msAddress){
emit LogInfo("bypass enableTrading");
return _basicTransfer(sender, recipient, amount);
} else {
revert(string(abi.encodePacked("Trading not enabled yet, please wait. Sender: ", addressToString(sender), " Recipient: ", addressToString(recipient))));
}
} else {
if (sender == owner() || sender == teamOracleFeeReceiver || sender == airDropAddress || sender == msAddress){
return _basicTransfer(sender, recipient, amount);
}
}
if (_shouldSwapBack()) {
_swapBack();
}
if (!isReflectionExempt[sender]){
_claim(sender);
}
require(_balances[sender] >= amount, "Insufficient Real Balance");
_balances[sender] = _balances[sender] - amount;
updateStateHolder(sender);
if (sender != UNISWAP_V2_PAIR) { // WHEN SELL
_lastSell[sender] = block.timestamp;
}
uint256 fees = _takeFees(sender, recipient, amount);
uint256 amountWithoutFees = amount;
if (fees > 0) {
amountWithoutFees -= fees;
_balances[address(this)] = _balances[address(this)] + fees;
emit Transfer(sender, address(this), fees);
}
_balances[recipient] = _balances[recipient] + amountWithoutFees;
updateStateHolder(recipient);
if (sender == UNISWAP_V2_PAIR) { // WHEN BUY
_lastBuy[recipient] = block.timestamp;
}
emit Transfer(sender, recipient, amountWithoutFees);
if (sender == UNISWAP_V2_PAIR || recipient == UNISWAP_V2_PAIR) {
if (enableAutoAdjust) {
adjustMinimumHolding();
}
}
return true;
}
function _basicTransfer(address sender, address recipient, uint256 amount) internal returns (bool) {
require(_balances[sender] >= amount, "Insufficient Balance");
_balances[sender] = _balances[sender] - amount;
updateStateHolder(sender);
_balances[recipient] = _balances[recipient] + amount;
updateStateHolder(recipient);
_lastBuy[recipient] = block.timestamp;
emit Transfer(sender, recipient, amount);
if (sender == UNISWAP_V2_PAIR || recipient == UNISWAP_V2_PAIR) {
if (enableAutoAdjust) {
adjustMinimumHolding();
}
}
return true;
}
function _takeFees(address sender, address recipient, uint256 amount) internal returns (uint256) {
uint256 fees = 0;
Fee memory __buyFee = buyFee;
Fee memory __sellFee = sellFee;
if(_shouldTakeFee(sender, recipient))
{
uint256 proportionReflected = 0;
if (sender == UNISWAP_V2_PAIR) {
fees = amount.mul(__buyFee.total).div(100);
proportionReflected = fees.mul(__buyFee.reflection).div(__buyFee.total);
} else {
fees = amount.mul(__sellFee.total).div(100);
proportionReflected = fees.mul(__sellFee.reflection).div(__sellFee.total);
}
if (proportionReflected > 0) {
totalReflections += proportionReflected;
if (eventInProgress) {
eventReflectedToken += proportionReflected;
} else {
normalReflectedToken += proportionReflected;
}
emit ReflectAccumulated(proportionReflected, totalReflections);
}
}
return fees;
}
function _checkBalanceForSwapping() internal view returns (bool) {
uint256 totalBalance = _balances[address(this)];
uint256 totatToSub = eventReflectedToken + normalReflectedToken + totalRemainder;
if (totatToSub > totalBalance) {
return false;
}
totalBalance -= totatToSub;
return totalBalance >= _swapThreshold;
}
function _shouldSwapBack() internal view returns (bool) {
return msg.sender != UNISWAP_V2_PAIR && !inSwap && claimingFees && _checkBalanceForSwapping();
}
function _swapBack() internal swapping {
Fee memory __sellFee = sellFee;
uint256 __swapThreshold = _swapThreshold;
uint256 amountToBurn = __swapThreshold * __sellFee.burn / __sellFee.total;
uint256 amountToSwap = __swapThreshold - amountToBurn;
approve(address(UNISWAP_V2_ROUTER), amountToSwap);
// burn
if (amountToBurn > 0) {
_basicTransfer(address(this), DEAD, amountToBurn);
}
// swap
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = UNISWAP_V2_ROUTER.WETH();
UNISWAP_V2_ROUTER.swapExactTokensForETHSupportingFeeOnTransferTokens(
amountToSwap, 0, path, address(this), block.timestamp
);
uint256 amountETH = address(this).balance;
uint256 totalSwapFee = __sellFee.total - __sellFee.reflection - __sellFee.burn;
uint256 amountETHTeamOracle = amountETH * __sellFee.teamOracle / totalSwapFee;
uint256 amountETHLP = amountETH * __sellFee.lp / totalSwapFee;
// send
if (amountETHTeamOracle > 0) {
(bool tmpSuccess,) = payable(teamOracleFeeReceiver).call{value: amountETHTeamOracle}("");
}
if (amountETHLP > 0) {
(bool tmpSuccess,) = payable(lpFeeReceiver).call{value: amountETHLP}("");
}
}
function _shouldTakeFee(address sender, address recipient) internal view returns (bool) {
return !isFeeExempt[sender] && !isFeeExempt[recipient];
}
function compareStrings(string memory a, string memory b) internal pure returns (bool) {
return keccak256(bytes(a)) == keccak256(bytes(b));
}
/* -------------------------------------------------------------------------- */
/* public */
/* -------------------------------------------------------------------------- */
function updateStateHolder(address holder) public {
if (!isReflectionExempt[holder]){
if (isHolder(holder)){
if (_isHolder[holder] == false){
_isHolder[holder] = true;
_holdingTime[holder] = block.timestamp;
holderAddresses.push(holder);
_keyIndex[holder] = holderAddresses.length - 1;
}
} else {
if (_isHolder[holder] == true){
_isHolder[holder] = false;
_holdingTime[holder] = 0;
_keyIndex[holderAddresses[holderAddresses.length - 1]] = _keyIndex[holder];
holderAddresses[_keyIndex[holder]] = holderAddresses[holderAddresses.length - 1];
holderAddresses.pop();
}
}
}
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/SafeMath.sol)
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 generally not needed starting with Solidity 0.8, since 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 subtraction 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
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)
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() {
_transferOwnership(_msgSender());
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
_checkOwner();
_;
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if the sender is not the owner.
*/
function _checkOwner() internal view virtual {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby disabling any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(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");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
/**
* @dev 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 `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, 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 `from` to `to` 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 from, address to, uint256 amount) external returns (bool);
}
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 >=0.5.0;
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 >=0.6.2;
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;
}
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);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
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;
}
}