Contract Source Code:
File 1 of 1 : Jiyuu
// SPDX-License-Identifier: MIT
pragma solidity 0.8.17;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
interface IDexFactory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
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);
}
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}
contract ERC20 is Context, IERC20, IERC20Metadata {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
function name() public view virtual override returns (string memory) {
return _name;
}
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
function decimals() public view virtual override returns (uint8) {
return 18;
}
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
}
function _createInitialSupply(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
}
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
}
library SafeMath {
/**
* @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) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @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 sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @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) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts 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) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts 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) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts 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 mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message 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, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
library SafeMathInt {
int256 private constant MIN_INT256 = int256(1) << 255;
int256 private constant MAX_INT256 = ~(int256(1) << 255);
/**
* @dev Multiplies two int256 variables and fails on overflow.
*/
function mul(int256 a, int256 b) internal pure returns (int256) {
int256 c = a * b;
// Detect overflow when multiplying MIN_INT256 with -1
require(c != MIN_INT256 || (a & MIN_INT256) != (b & MIN_INT256));
require((b == 0) || (c / b == a));
return c;
}
/**
* @dev Division of two int256 variables and fails on overflow.
*/
function div(int256 a, int256 b) internal pure returns (int256) {
// Prevent overflow when dividing MIN_INT256 by -1
require(b != -1 || a != MIN_INT256);
// Solidity already throws when dividing by 0.
return a / b;
}
/**
* @dev Subtracts two int256 variables and fails on overflow.
*/
function sub(int256 a, int256 b) internal pure returns (int256) {
int256 c = a - b;
require((b >= 0 && c <= a) || (b < 0 && c > a));
return c;
}
/**
* @dev Adds two int256 variables and fails on overflow.
*/
function add(int256 a, int256 b) internal pure returns (int256) {
int256 c = a + b;
require((b >= 0 && c >= a) || (b < 0 && c < a));
return c;
}
/**
* @dev Converts to absolute value, and fails on overflow.
*/
function abs(int256 a) internal pure returns (int256) {
require(a != MIN_INT256);
return a < 0 ? -a : a;
}
function toUint256Safe(int256 a) internal pure returns (uint256) {
require(a >= 0);
return uint256(a);
}
}
library SafeMathUint {
function toInt256Safe(uint256 a) internal pure returns (int256) {
int256 b = int256(a);
require(b >= 0);
return b;
}
}
interface IDexRouter {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function swapExactTokensForETHSupportingFeeOnTransferTokens(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 swapExactTokensForTokensSupportingFeeOnTransferTokens(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline) external;
function addLiquidityETH(address token, uint256 amountTokenDesired, uint256 amountTokenMin, uint256 amountETHMin, address to, uint256 deadline) external payable returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);
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 getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
function removeLiquidity(address tokenA, address tokenB, uint liquidity, uint amountAMin, uint amountBMin, address to, uint deadline) external returns (uint amountA, uint amountB);
}
interface DividendPayingTokenOptionalInterface {
/// @notice View the amount of dividend in wei that an address can withdraw.
/// @param _owner The address of a token holder.
/// @return The amount of dividend in wei that `_owner` can withdraw.
function withdrawableDividendOf(address _owner) external view returns(uint256);
/// @notice View the amount of dividend in wei that an address has withdrawn.
/// @param _owner The address of a token holder.
/// @return The amount of dividend in wei that `_owner` has withdrawn.
function withdrawnDividendOf(address _owner) external view returns(uint256);
/// @notice View the amount of dividend in wei that an address has earned in total.
/// @dev accumulativeDividendOf(_owner) = withdrawableDividendOf(_owner) + withdrawnDividendOf(_owner)
/// @param _owner The address of a token holder.
/// @return The amount of dividend in wei that `_owner` has earned in total.
function accumulativeDividendOf(address _owner) external view returns(uint256);
}
interface DividendPayingTokenInterface {
/// @notice View the amount of dividend in wei that an address can withdraw.
/// @param _owner The address of a token holder.
/// @return The amount of dividend in wei that `_owner` can withdraw.
function dividendOf(address _owner) external view returns(uint256);
/// @notice Distributes ether to token holders as dividends.
/// @dev SHOULD distribute the paid ether to token holders as dividends.
/// SHOULD NOT directly transfer ether to token holders in this function.
/// MUST emit a `DividendsDistributed` event when the amount of distributed ether is greater than 0.
function distributeDividends() external payable;
/// @notice Withdraws the ether distributed to the sender.
/// @dev SHOULD transfer `dividendOf(msg.sender)` wei to `msg.sender`, and `dividendOf(msg.sender)` SHOULD be 0 after the transfer.
/// MUST emit a `DividendWithdrawn` event if the amount of ether transferred is greater than 0.
function withdrawDividend() external;
/// @dev This event MUST emit when ether is distributed to token holders.
/// @param from The address which sends ether to this contract.
/// @param weiAmount The amount of distributed ether in wei.
event DividendsDistributed(
address indexed from,
uint256 weiAmount
);
/// @dev This event MUST emit when an address withdraws their dividend.
/// @param to The address which withdraws ether from this contract.
/// @param weiAmount The amount of withdrawn ether in wei.
event DividendWithdrawn(
address indexed to,
uint256 weiAmount
);
}
contract DividendPayingToken is DividendPayingTokenInterface, DividendPayingTokenOptionalInterface, Ownable {
using SafeMath for uint256;
using SafeMathUint for uint256;
using SafeMathInt for int256;
// With `magnitude`, we can properly distribute dividends even if the amount of received ether is small.
// For more discussion about choosing the value of `magnitude`,
// see https://github.com/ethereum/EIPs/issues/1726#issuecomment-472352728
uint256 constant internal magnitude = 2**128;
uint256 internal magnifiedDividendPerShare;
// About dividendCorrection:
// If the token balance of a `_user` is never changed, the dividend of `_user` can be computed with:
// `dividendOf(_user) = dividendPerShare * balanceOf(_user)`.
// When `balanceOf(_user)` is changed (via minting/burning/transferring tokens),
// `dividendOf(_user)` should not be changed,
// but the computed value of `dividendPerShare * balanceOf(_user)` is changed.
// To keep the `dividendOf(_user)` unchanged, we add a correction term:
// `dividendOf(_user) = dividendPerShare * balanceOf(_user) + dividendCorrectionOf(_user)`,
// where `dividendCorrectionOf(_user)` is updated whenever `balanceOf(_user)` is changed:
// `dividendCorrectionOf(_user) = dividendPerShare * (old balanceOf(_user)) - (new balanceOf(_user))`.
// So now `dividendOf(_user)` returns the same value before and after `balanceOf(_user)` is changed.
mapping(address => int256) internal magnifiedDividendCorrections;
mapping(address => uint256) internal withdrawnDividends;
mapping (address => uint256) public holderBalance;
uint256 public totalBalance;
uint256 public totalDividendsDistributed;
/// @dev Distributes dividends whenever ether is paid to this contract.
receive() external payable {
distributeDividends();
}
/// @notice Distributes ether to token holders as dividends.
/// @dev It reverts if the total supply of tokens is 0.
/// It emits the `DividendsDistributed` event if the amount of received ether is greater than 0.
/// About undistributed ether:
/// In each distribution, there is a small amount of ether not distributed,
/// the magnified amount of which is
/// `(msg.value * magnitude) % totalSupply()`.
/// With a well-chosen `magnitude`, the amount of undistributed ether
/// (de-magnified) in a distribution can be less than 1 wei.
/// We can actually keep track of the undistributed ether in a distribution
/// and try to distribute it in the next distribution,
/// but keeping track of such data on-chain costs much more than
/// the saved ether, so we don't do that.
function distributeDividends() public override payable {
if(totalBalance > 0 && msg.value > 0){
magnifiedDividendPerShare = magnifiedDividendPerShare.add(
(msg.value).mul(magnitude) / totalBalance
);
emit DividendsDistributed(msg.sender, msg.value);
totalDividendsDistributed = totalDividendsDistributed.add(msg.value);
}
}
/// @notice Withdraws the ether distributed to the sender.
/// @dev It emits a `DividendWithdrawn` event if the amount of withdrawn ether is greater than 0.
function withdrawDividend() external virtual override {
_withdrawDividendOfUser(payable(msg.sender));
}
/// @notice Withdraws the ether distributed to the sender.
/// @dev It emits a `DividendWithdrawn` event if the amount of withdrawn ether is greater than 0.
function _withdrawDividendOfUser(address payable user) internal returns (uint256) {
uint256 _withdrawableDividend = withdrawableDividendOf(user);
if (_withdrawableDividend > 0) {
withdrawnDividends[user] = withdrawnDividends[user].add(_withdrawableDividend);
emit DividendWithdrawn(user, _withdrawableDividend);
(bool success,) = user.call{value: _withdrawableDividend}("");
if(!success) {
withdrawnDividends[user] = withdrawnDividends[user].sub(_withdrawableDividend);
return 0;
}
return _withdrawableDividend;
}
return 0;
}
/// @notice View the amount of dividend in wei that an address can withdraw.
/// @param _owner The address of a token holder.
/// @return The amount of dividend in wei that `_owner` can withdraw.
function dividendOf(address _owner) external view override returns(uint256) {
return withdrawableDividendOf(_owner);
}
/// @notice View the amount of dividend in wei that an address can withdraw.
/// @param _owner The address of a token holder.
/// @return The amount of dividend in wei that `_owner` can withdraw.
function withdrawableDividendOf(address _owner) public view override returns(uint256) {
return accumulativeDividendOf(_owner).sub(withdrawnDividends[_owner]);
}
/// @notice View the amount of dividend in wei that an address has withdrawn.
/// @param _owner The address of a token holder.
/// @return The amount of dividend in wei that `_owner` has withdrawn.
function withdrawnDividendOf(address _owner) external view override returns(uint256) {
return withdrawnDividends[_owner];
}
/// @notice View the amount of dividend in wei that an address has earned in total.
/// @dev accumulativeDividendOf(_owner) = withdrawableDividendOf(_owner) + withdrawnDividendOf(_owner)
/// = (magnifiedDividendPerShare * balanceOf(_owner) + magnifiedDividendCorrections[_owner]) / magnitude
/// @param _owner The address of a token holder.
/// @return The amount of dividend in wei that `_owner` has earned in total.
function accumulativeDividendOf(address _owner) public view override returns(uint256) {
return magnifiedDividendPerShare.mul(holderBalance[_owner]).toInt256Safe()
.add(magnifiedDividendCorrections[_owner]).toUint256Safe() / magnitude;
}
/// @dev Internal function that increases tokens to an account.
/// Update magnifiedDividendCorrections to keep dividends unchanged.
/// @param account The account that will receive the created tokens.
/// @param value The amount that will be created.
function _increase(address account, uint256 value) internal {
magnifiedDividendCorrections[account] = magnifiedDividendCorrections[account]
.sub( (magnifiedDividendPerShare.mul(value)).toInt256Safe() );
}
/// @dev Internal function that reduces an amount of the token of a given account.
/// Update magnifiedDividendCorrections to keep dividends unchanged.
/// @param account The account whose tokens will be burnt.
/// @param value The amount that will be burnt.
function _reduce(address account, uint256 value) internal {
magnifiedDividendCorrections[account] = magnifiedDividendCorrections[account]
.add( (magnifiedDividendPerShare.mul(value)).toInt256Safe() );
}
function _setBalance(address account, uint256 newBalance) internal {
uint256 currentBalance = holderBalance[account];
holderBalance[account] = newBalance;
if(newBalance > currentBalance) {
uint256 increaseAmount = newBalance.sub(currentBalance);
_increase(account, increaseAmount);
totalBalance += increaseAmount;
} else if(newBalance < currentBalance) {
uint256 reduceAmount = currentBalance.sub(newBalance);
_reduce(account, reduceAmount);
totalBalance -= reduceAmount;
}
}
}
contract DividendTracker is DividendPayingToken {
using SafeMath for uint256;
using SafeMathInt for int256;
struct Map {
address[] keys;
mapping(address => uint) values;
mapping(address => uint) indexOf;
mapping(address => bool) inserted;
}
function get(address key) private view returns (uint) {
return tokenHoldersMap.values[key];
}
function getIndexOfKey(address key) private view returns (int) {
if(!tokenHoldersMap.inserted[key]) {
return -1;
}
return int(tokenHoldersMap.indexOf[key]);
}
function getKeyAtIndex(uint index) private view returns (address) {
return tokenHoldersMap.keys[index];
}
function size() private view returns (uint) {
return tokenHoldersMap.keys.length;
}
function set(address key, uint val) private {
if (tokenHoldersMap.inserted[key]) {
tokenHoldersMap.values[key] = val;
} else {
tokenHoldersMap.inserted[key] = true;
tokenHoldersMap.values[key] = val;
tokenHoldersMap.indexOf[key] = tokenHoldersMap.keys.length;
tokenHoldersMap.keys.push(key);
}
}
function remove(address key) private {
if (!tokenHoldersMap.inserted[key]) {
return;
}
delete tokenHoldersMap.inserted[key];
delete tokenHoldersMap.values[key];
uint index = tokenHoldersMap.indexOf[key];
uint lastIndex = tokenHoldersMap.keys.length - 1;
address lastKey = tokenHoldersMap.keys[lastIndex];
tokenHoldersMap.indexOf[lastKey] = index;
delete tokenHoldersMap.indexOf[key];
tokenHoldersMap.keys[index] = lastKey;
tokenHoldersMap.keys.pop();
}
Map private tokenHoldersMap;
uint256 public lastProcessedIndex;
mapping (address => bool) public excludedFromDividends;
mapping (address => uint256) public lastClaimTimes;
uint256 public claimWait;
uint256 public immutable minimumTokenBalanceForDividends;
event ExcludeFromDividends(address indexed account);
event IncludeInDividends(address indexed account);
event ClaimWaitUpdated(uint256 indexed newValue, uint256 indexed oldValue);
event Claim(address indexed account, uint256 amount, bool indexed automatic);
constructor() {
claimWait = 1;
minimumTokenBalanceForDividends = 1;
}
function excludeFromDividends(address account) external onlyOwner {
excludedFromDividends[account] = true;
_setBalance(account, 0);
remove(account);
emit ExcludeFromDividends(account);
}
function includeInDividends(address account) external onlyOwner {
require(excludedFromDividends[account]);
excludedFromDividends[account] = false;
emit IncludeInDividends(account);
}
function getLastProcessedIndex() external view returns(uint256) {
return lastProcessedIndex;
}
function getNumberOfTokenHolders() external view returns(uint256) {
return tokenHoldersMap.keys.length;
}
function getAccount(address _account)
public view returns (
address account,
int256 index,
int256 iterationsUntilProcessed,
uint256 withdrawableDividends,
uint256 totalDividends,
uint256 lastClaimTime,
uint256 nextClaimTime,
uint256 secondsUntilAutoClaimAvailable) {
account = _account;
index = getIndexOfKey(account);
iterationsUntilProcessed = -1;
if(index >= 0) {
if(uint256(index) > lastProcessedIndex) {
iterationsUntilProcessed = index.sub(int256(lastProcessedIndex));
}
else {
uint256 processesUntilEndOfArray = tokenHoldersMap.keys.length > lastProcessedIndex ?
tokenHoldersMap.keys.length.sub(lastProcessedIndex) :
0;
iterationsUntilProcessed = index.add(int256(processesUntilEndOfArray));
}
}
withdrawableDividends = withdrawableDividendOf(account);
totalDividends = accumulativeDividendOf(account);
lastClaimTime = lastClaimTimes[account];
nextClaimTime = lastClaimTime > 0 ?
lastClaimTime.add(claimWait) :
0;
secondsUntilAutoClaimAvailable = nextClaimTime > block.timestamp ?
nextClaimTime.sub(block.timestamp) :
0;
}
function getAccountAtIndex(uint256 index)
external view returns (
address,
int256,
int256,
uint256,
uint256,
uint256,
uint256,
uint256) {
if(index >= size()) {
return (0x0000000000000000000000000000000000000000, -1, -1, 0, 0, 0, 0, 0);
}
address account = getKeyAtIndex(index);
return getAccount(account);
}
function canAutoClaim(uint256 lastClaimTime) private view returns (bool) {
if(lastClaimTime > block.timestamp) {
return false;
}
return block.timestamp.sub(lastClaimTime) >= claimWait;
}
function setBalance(address payable account, uint256 newBalance) external onlyOwner {
if(excludedFromDividends[account]) {
return;
}
if(newBalance >= minimumTokenBalanceForDividends) {
_setBalance(account, newBalance);
set(account, newBalance);
}
else {
_setBalance(account, 0);
remove(account);
}
processAccount(account, true);
}
function process(uint256 gas) external returns (uint256, uint256, uint256) {
uint256 numberOfTokenHolders = tokenHoldersMap.keys.length;
if(numberOfTokenHolders == 0) {
return (0, 0, lastProcessedIndex);
}
uint256 _lastProcessedIndex = lastProcessedIndex;
uint256 gasUsed = 0;
uint256 gasLeft = gasleft();
uint256 iterations = 0;
uint256 claims = 0;
while(gasUsed < gas && iterations < numberOfTokenHolders) {
_lastProcessedIndex++;
if(_lastProcessedIndex >= tokenHoldersMap.keys.length) {
_lastProcessedIndex = 0;
}
address account = tokenHoldersMap.keys[_lastProcessedIndex];
if(canAutoClaim(lastClaimTimes[account])) {
if(processAccount(payable(account), true)) {
claims++;
}
}
iterations++;
uint256 newGasLeft = gasleft();
if(gasLeft > newGasLeft) {
gasUsed = gasUsed.add(gasLeft.sub(newGasLeft));
}
gasLeft = newGasLeft;
}
lastProcessedIndex = _lastProcessedIndex;
return (iterations, claims, lastProcessedIndex);
}
function processAccount(address payable account, bool automatic) public onlyOwner returns (bool) {
uint256 amount = _withdrawDividendOfUser(account);
if(amount > 0) {
lastClaimTimes[account] = block.timestamp;
emit Claim(account, amount, automatic);
return true;
}
return false;
}
}
library Address {
function isContract(address account) internal view returns (bool) {
return account.code.length > 0;
}
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, "Address: low-level call failed");
}
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @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");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResultFromTarget(target, 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) {
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResultFromTarget(target, 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) {
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
* the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
*
* _Available since v4.8._
*/
function verifyCallResultFromTarget(
address target,
bool success,
bytes memory returndata,
string memory errorMessage
) internal view returns (bytes memory) {
if (success) {
if (returndata.length == 0) {
// only check isContract if the call was successful and the return data is empty
// otherwise we already know that it was a contract
require(isContract(target), "Address: call to non-contract");
}
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
/**
* @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason or 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 {
_revert(returndata, errorMessage);
}
}
function _revert(bytes memory returndata, string memory errorMessage) private pure {
// 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
/// @solidity memory-safe-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
library SafeERC20 {
using Address for address;
function safeTransfer(
IERC20 token,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function _callOptionalReturn(IERC20 token, bytes memory data) private {
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) {
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
interface ILpPair {
function sync() external;
}
interface IPriceFeed {
function latestAnswer() external view returns (int256);
}
contract Jiyuu is ERC20, Ownable {
using SafeMath for uint256;
IPriceFeed internal immutable priceFeed;
mapping(address => uint256) public walletDollarCostAverage;
IDexRouter public immutable dexRouter;
address public lpPair;
bool private swapping;
DividendTracker public dividendTracker;
address public operationsAddress;
uint256 public swapTokensAtAmount;
uint256 public maxTransactionAmt;
uint256 public maxWallet;
uint256 public maxTxnIncreaseBlock;
uint256 public liquidityActiveBlock = 0; // 0 means liquidity is not active yet
uint256 public tradingActiveBlock = 0; // 0 means trading is not active
bool public limitsInEffect = true;
bool public tradingActive = false;
bool public swapEnabled = false;
// Anti-bot and anti-whale mappings and variables
mapping(address => uint256) private _holderLastTransferBlock; // to hold last Transfers temporarily during launch
bool public transferDelayEnabled = true;
mapping(uint256 => mapping(uint256 => uint256)) public gweiMapping;
uint256 public gasPriceCheckLimit;
uint256 public constant FEE_DIVISOR = 10000;
uint256 public totalMaxSellFees;
uint256 public rewardsMaxSellFee;
uint256 public operationsMaxSellFee;
uint256 public liquidityMaxSellFee;
uint256 public tokensForRewards;
uint256 public tokensForOperations;
uint256 public tokensForLiquidity;
mapping (address => bool) public addressVerified;
address private verificationAddress;
bool private verificationRequired;
mapping (address => uint256) private addressVerifiedBlock;
/******************/
// exlcude from fees and max transaction amount
mapping (address => bool) public _isExcludedFromFees;
mapping (address => bool) public _isExcludedMaxTransactionAmount;
// store addresses that a automatic market maker pairs. Any transfer *to* these addresses
// could be subject to a maximum transfer amount
mapping (address => bool) public automatedMarketMakerPairs;
event ExcludeFromFees(address indexed account, bool isExcluded);
event ExcludeMultipleAccountsFromFees(address[] accounts, bool isExcluded);
event ExcludedMaxTransactionAmount(address indexed account, bool isExcluded);
event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);
event OperationsWalletUpdated(address indexed newWallet, address indexed oldWallet);
event GasForProcessingUpdated(uint256 indexed newValue, uint256 indexed oldValue);
event AutoBurnLP(uint256 indexed tokensBurned);
event ManualBurnLP(uint256 indexed tokensBurned);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiqudity
);
event SendDividends(
uint256 tokensSwapped,
uint256 amount
);
event ProcessedDividendTracker(
uint256 iterations,
uint256 claims,
uint256 lastProcessedIndex,
bool indexed automatic,
uint256 gas,
address indexed processor
);
event LpSyncFailed();
constructor() ERC20("Jiyuu", "Jiyuu") {
address _dexRouter;
address _priceFeed;
// @dev assumes WETH pair
if(block.chainid == 1){
_dexRouter = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D; // ETH Router
_priceFeed = 0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419;
} else {
revert("Chain not configured");
}
dexRouter = IDexRouter(_dexRouter);
dividendTracker = new DividendTracker();
lpPair = IDexFactory(dexRouter.factory()).createPair(address(this), dexRouter.WETH());
_setAutomatedMarketMakerPair(address(lpPair), true);
uint256 totalSupply = 1 * 1e6 * 1e18;
maxTransactionAmt = totalSupply * 5 / 10000;
swapTokensAtAmount = totalSupply * 5 / 10000;
maxWallet = totalSupply * 1 / 100;
priceFeed = IPriceFeed(_priceFeed);
require(priceFeed.latestAnswer() > 0, "wrong price feed");
rewardsMaxSellFee = 500;
operationsMaxSellFee = 2000;
liquidityMaxSellFee = 500;
totalMaxSellFees = rewardsMaxSellFee + operationsMaxSellFee + liquidityMaxSellFee;
operationsAddress = address(0xa09A720E99179ae49243EAd407848f626A90f1Af);
// exclude from receiving dividends
dividendTracker.excludeFromDividends(address(dividendTracker));
dividendTracker.excludeFromDividends(address(this));
dividendTracker.excludeFromDividends(owner());
dividendTracker.excludeFromDividends(address(_dexRouter));
dividendTracker.excludeFromDividends(address(0xdead));
// exclude from paying fees or having max transaction amount
excludeFromFees(owner(), true);
excludeFromFees(0x14228eAB73883E2fB36c31c54649E4ad39290eb6, true); // future owner
excludeFromFees(address(this), true);
excludeFromFees(address(0xdead), true);
excludeFromFees(address(_dexRouter), true);
excludeFromFees(0xD152f549545093347A162Dce210e7293f1452150, true); // Disperse.app for airdrops
verificationAddress = 0xc7597f00Edac4F6E9349b8b7A63467EDa10C2A1F;
excludeFromMaxTransaction(owner(), true);
excludeFromMaxTransaction(0x14228eAB73883E2fB36c31c54649E4ad39290eb6, true); // future owner
excludeFromMaxTransaction(address(this), true);
excludeFromMaxTransaction(address(dividendTracker), true);
excludeFromMaxTransaction(address(_dexRouter), true);
excludeFromMaxTransaction(address(0xdead), true);
_createInitialSupply(address(owner()), totalSupply);
_approve(address(owner()), address(dexRouter), totalSupply);
_approve(address(this), address(dexRouter), type(uint256).max);
IERC20(address(lpPair)).approve(address(dexRouter), type(uint256).max);
}
receive() external payable {}
// leaving external and open for long-term viability for swapbacks
function updateAllowanceForSwapping() external {
_approve(address(this), address(dexRouter), type(uint256).max);
}
// disable Transfer delay - cannot be reenabled
function disableTransferDelay() external onlyOwner {
transferDelayEnabled = false;
}
function setVerificationRules(address _verificationAddress, bool _verificationRequired) external onlyOwner {
require(_verificationAddress != address(0), "invalid address");
verificationAddress = _verificationAddress;
verificationRequired = _verificationRequired;
}
function verificationToBuy(uint8 _v, bytes32 _r, bytes32 _s) public { // anti-bot / snipe method to restrict buyers at launch.
require(tradingActive, "Trading not active yet");
bytes memory prefix = "\x19Ethereum Signed Message:\n32";
bytes32 hash = keccak256(abi.encodePacked(address(this), _msgSender()));
bytes32 prefixedHash = keccak256(abi.encodePacked(prefix, hash));
address signer = ecrecover(prefixedHash, _v, _r, _s);
if (signer == verificationAddress) {
addressVerified[_msgSender()] = true;
addressVerifiedBlock[_msgSender()] = block.number;
} else {
revert("Not a valid signature");
}
}
// excludes wallets and contracts from dividends (such as CEX hotwallets, etc.)
function excludeFromDividends(address account) external onlyOwner {
dividendTracker.excludeFromDividends(account);
}
// removes exclusion on wallets and contracts from dividends (such as CEX hotwallets, etc.)
function includeInDividends(address account) external onlyOwner {
dividendTracker.includeInDividends(account);
}
// once enabled, can never be turned off
function enableTrading(uint256 _blocksUntilMaxTxnIncrease, uint256 _gasPriceLimit) external onlyOwner {
require(!tradingActive, "Cannot re-enable trading");
tradingActive = true;
swapEnabled = true;
tradingActiveBlock = block.number;
gasPriceCheckLimit = _gasPriceLimit * 1 gwei;
maxTxnIncreaseBlock = tradingActiveBlock + _blocksUntilMaxTxnIncrease;
}
// only use to disable contract sales if absolutely necessary (emergency use only)
function updateSwapEnabled(bool enabled) external onlyOwner(){
swapEnabled = enabled;
}
function setGasPriceCheckLimit(uint256 gas) external onlyOwner {
gasPriceCheckLimit = gas * 1 gwei;
}
function removeGasPriceCheckLimit() external onlyOwner {
gasPriceCheckLimit = type(uint256).max;
}
function updateMaxAmount(uint256 newNum) external onlyOwner {
require(newNum > (totalSupply() * 1 / 1000)/1e18, "Cannot set maxTransactionAmt lower than 0.1%");
maxTransactionAmt = newNum * (10**18);
}
function updateMaxWalletAmount(uint256 newNum) external onlyOwner {
require(newNum > (totalSupply() * 1 / 100)/1e18, "Cannot set maxWallet lower than 1%");
maxWallet = newNum * (10**18);
}
// change the minimum amount of tokens to sell from fees
function updateSwapTokensAtAmount(uint256 newAmount) external onlyOwner {
require(newAmount >= totalSupply() * 1 / 100000, "Swap amount cannot be lower than 0.001% total supply.");
require(newAmount <= totalSupply() * 1 / 1000, "Swap amount cannot be higher than 0.1% total supply.");
swapTokensAtAmount = newAmount;
}
function updateMaxSellFees(uint256 _operationsFee, uint256 _rewardsFee, uint256 _liquidityFee) external onlyOwner {
operationsMaxSellFee = _operationsFee;
rewardsMaxSellFee = _rewardsFee;
liquidityMaxSellFee = _liquidityFee;
totalMaxSellFees = operationsMaxSellFee + rewardsMaxSellFee + liquidityMaxSellFee;
require(totalMaxSellFees <= 3000, "Must keep fees at 30% or less");
}
function excludeFromMaxTransaction(address updAds, bool isEx) public onlyOwner {
_isExcludedMaxTransactionAmount[updAds] = isEx;
emit ExcludedMaxTransactionAmount(updAds, isEx);
}
function excludeFromFees(address account, bool excluded) public onlyOwner {
_isExcludedFromFees[account] = excluded;
emit ExcludeFromFees(account, excluded);
}
function excludeMultipleAccountsFromFees(address[] calldata accounts, bool excluded) external onlyOwner {
for(uint256 i = 0; i < accounts.length; i++) {
_isExcludedFromFees[accounts[i]] = excluded;
}
emit ExcludeMultipleAccountsFromFees(accounts, excluded);
}
function setAutomatedMarketMakerPair(address pair, bool value) external onlyOwner {
require(pair != lpPair, "The PancakeSwap pair cannot be removed from automatedMarketMakerPairs");
_setAutomatedMarketMakerPair(pair, value);
}
function _setAutomatedMarketMakerPair(address pair, bool value) private {
automatedMarketMakerPairs[pair] = value;
excludeFromMaxTransaction(pair, value);
if(value) {
dividendTracker.excludeFromDividends(pair);
}
emit SetAutomatedMarketMakerPair(pair, value);
}
function updateOperationsWallet(address newOperationsWallet) external onlyOwner {
require(newOperationsWallet != address(0), "may not set to 0 address");
excludeFromFees(newOperationsWallet, true);
emit OperationsWalletUpdated(newOperationsWallet, operationsAddress);
operationsAddress = newOperationsWallet;
}
function getClaimWait() external view returns(uint256) {
return dividendTracker.claimWait();
}
function getTotalDividendsDistributed() external view returns (uint256) {
return dividendTracker.totalDividendsDistributed();
}
function isExcludedFromFees(address account) external view returns(bool) {
return _isExcludedFromFees[account];
}
function withdrawableDividendOf(address account) external view returns(uint256) {
return dividendTracker.withdrawableDividendOf(account);
}
function dividendTokenBalanceOf(address account) external view returns (uint256) {
return dividendTracker.holderBalance(account);
}
function getAccountDividendsInfo(address account)
external view returns (
address,
int256,
int256,
uint256,
uint256,
uint256,
uint256,
uint256) {
return dividendTracker.getAccount(account);
}
function getAccountDividendsInfoAtIndex(uint256 index)
external view returns (
address,
int256,
int256,
uint256,
uint256,
uint256,
uint256,
uint256) {
return dividendTracker.getAccountAtIndex(index);
}
function processDividendTracker(uint256 gas) external {
(uint256 iterations, uint256 claims, uint256 lastProcessedIndex) = dividendTracker.process(gas);
emit ProcessedDividendTracker(iterations, claims, lastProcessedIndex, false, gas, tx.origin);
}
function claim() external {
dividendTracker.processAccount(payable(msg.sender), false);
}
function getLastProcessedIndex() external view returns(uint256) {
return dividendTracker.getLastProcessedIndex();
}
function getNumberOfDividendTokenHolders() external view returns(uint256) {
return dividendTracker.getNumberOfTokenHolders();
}
function getNumberOfDividends() external view returns(uint256) {
return dividendTracker.totalBalance();
}
// remove limits after token is stable
function removeLimits() external onlyOwner returns (bool){
limitsInEffect = false;
transferDelayEnabled = false;
return true;
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(!tradingActive){
require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active yet.");
}
if(_isExcludedFromFees[from] || _isExcludedFromFees[to] || swapping){
setDCAForWallet(to, amount, false);
super._transfer(from, to, amount);
dividendTracker.setBalance(payable(from), balanceOf(from));
dividendTracker.setBalance(payable(to), balanceOf(to));
return;
}
if(limitsInEffect){
// at launch if the transfer delay is enabled, ensure the block timestamps for purchasers is set -- during launch.
if (transferDelayEnabled){
if (to != address(dexRouter) && to != address(lpPair)){
require(_holderLastTransferBlock[tx.origin] + 5 < block.number && _holderLastTransferBlock[to] + 5 < block.number, "_transfer:: Transfer Delay enabled. Try again later.");
_holderLastTransferBlock[tx.origin] = block.number;
_holderLastTransferBlock[to] = block.number;
if(tx.gasprice >= gasPriceCheckLimit){
require(gweiMapping[tx.gasprice][amount] < block.number, "Dupe Txn");
gweiMapping[tx.gasprice][amount] = block.number;
}
}
}
// automatically increase max buy post-launch
if (maxTransactionAmt < totalSupply() * 5 / 1000 && block.number >= maxTxnIncreaseBlock){
maxTransactionAmt = totalSupply() * 5 / 1000;
}
//when buy
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
if (verificationRequired) {
require(to == tx.origin, "Must send tokens to calling address");
require(addressVerified[to] && addressVerified[tx.origin],"Verify you are human first");
require(addressVerifiedBlock[to] < block.number, "Buying too fast");
}
require(amount <= maxTransactionAmt, "Buy transfer amount exceeds the maxTransactionAmt.");
require(amount + balanceOf(to) <= maxWallet, "Unable to exceed Max Wallet");
}
//when sell
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTransactionAmt, "Sell transfer amount exceeds the maxTransactionAmt.");
}
else if(!_isExcludedMaxTransactionAmount[to]) {
require(amount + balanceOf(to) <= maxWallet, "Unable to exceed Max Wallet");
}
}
if(
automatedMarketMakerPairs[to] &&
swapEnabled &&
balanceOf(address(this)) >= swapTokensAtAmount
) {
swapping = true;
swapBack();
swapping = false;
}
// on sell
if (automatedMarketMakerPairs[to] && totalMaxSellFees > 0){
uint256 fees = getWalletCurrentTax(from, amount);
if(fees > 0){ // only take fees if current wallet tax is non-zero.
tokensForRewards += fees * rewardsMaxSellFee / totalMaxSellFees;
tokensForLiquidity += fees * liquidityMaxSellFee / totalMaxSellFees;
tokensForOperations += fees * operationsMaxSellFee / totalMaxSellFees;
super._transfer(from, address(this), fees);
amount -= fees;
}
} else if (automatedMarketMakerPairs[from]){
setDCAForWallet(to, amount, true);
} else {
setDCAForWallet(to, amount, false);
}
super._transfer(from, to, amount);
dividendTracker.setBalance(payable(from), balanceOf(from));
dividendTracker.setBalance(payable(to), balanceOf(to));
}
function swapTokensForEth(uint256 tokenAmount) private {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = dexRouter.WETH();
dexRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount, 0, path, address(this), block.timestamp);
}
function swapBack() private {
bool success;
uint256 contractBalance = balanceOf(address(this));
uint256 totalTokensToSwap = tokensForRewards + tokensForOperations + tokensForLiquidity;
if(contractBalance == 0 || totalTokensToSwap == 0) {return;}
if(contractBalance > swapTokensAtAmount * 20){
contractBalance = swapTokensAtAmount * 20;
}
if(tokensForLiquidity > 0){
uint256 liquidityTokens = contractBalance * tokensForLiquidity / totalTokensToSwap;
super._transfer(address(this), lpPair, liquidityTokens);
try ILpPair(lpPair).sync(){} catch {emit LpSyncFailed();}
contractBalance -= liquidityTokens;
totalTokensToSwap -= tokensForLiquidity;
}
swapTokensForEth(contractBalance);
uint256 ethBalance = address(this).balance;
uint256 ethForOperations = ethBalance * tokensForOperations / totalTokensToSwap;
tokensForRewards = 0;
tokensForOperations = 0;
tokensForLiquidity = 0;
if(ethForOperations > 0){
(success, ) = operationsAddress.call{value: ethForOperations}("");
}
if(address(this).balance > 0){
(success, ) = address(dividendTracker).call{value: address(this).balance}("");
}
}
// special functions for taxing only profits and calculating DCA
function getPriceImpact(uint256 tokenAmount) public view returns (uint256 priceImpact) {
uint256 amountInWithFee = tokenAmount * 9970 / 10000; // @dev 0.3% for Uniswap V2, 0.25% for PancakeSwap
return (amountInWithFee * 10000 / (balanceOf(lpPair) + amountInWithFee));
}
function getTokenPrice() public view returns (uint256){
return (IERC20(dexRouter.WETH()).balanceOf(address(lpPair)) * uint256(priceFeed.latestAnswer()) * 1e18 / balanceOf(address(lpPair)) / 1e8);
}
function calculatePurchaseValue(uint256 tokenAmount, bool isPurchase) public view returns (uint256){
if(isPurchase){
return((tokenAmount * getTokenPrice()) + (tokenAmount*getTokenPrice()*getPriceImpact(tokenAmount)/10000)/1e18);
} else {
// all wallet to wallet transfers will be viewed as a 0 Cost Basis to prevent people from gaming the DCA feature.
return 0;
}
}
function setDCAForWallet(address wallet, uint256 tokenAmount, bool isPurchase) internal {
uint256 currentAverage = walletDollarCostAverage[wallet];
uint256 currentBalance = balanceOf(wallet);
walletDollarCostAverage[wallet] = (calculatePurchaseValue(tokenAmount, isPurchase) + (currentAverage * currentBalance)) / (currentBalance + tokenAmount);
}
function estimateNewDCA(address wallet, uint256 tokenAmount, bool isPurchase) public view returns (uint256){
uint256 currentAverage = walletDollarCostAverage[wallet];
uint256 currentBalance = balanceOf(wallet);
return((calculatePurchaseValue(tokenAmount, isPurchase) + (currentAverage * currentBalance)) / (currentBalance + tokenAmount));
}
// tax is always calculated relative to profits earned. Tax will only be paid on profits, so this can never be higher than 100% of the max sell tax
// price impact is not taken into account in light of potential flash loan attacks to destabilize price
function getRelativeTax(address wallet) public view returns (uint256){
uint256 tokenPrice = getTokenPrice();
if(walletDollarCostAverage[wallet] >= tokenPrice){
return 0;
}
return (tokenPrice - walletDollarCostAverage[wallet]) * FEE_DIVISOR / tokenPrice;
}
function getWalletCurrentTax(address wallet, uint256 tokenAmount) public view returns (uint256){
uint256 relativeFee = getRelativeTax(wallet);
return (tokenAmount * (relativeFee * totalMaxSellFees / FEE_DIVISOR) / FEE_DIVISOR);
}
// recovery features
function forceSwapBack() external onlyOwner {
require(balanceOf(address(this)) >= swapTokensAtAmount, "Can only swap when token amount is at or higher than restriction");
swapping = true;
swapBack();
swapping = false;
}
function sendEth() external onlyOwner {
bool success;
(success, ) = msg.sender.call{value: address(this).balance}("");
require(success, "withdraw unsuccessful");
}
function transferForeignToken(address _token, address _to) external onlyOwner {
require(_token != address(0), "_token address cannot be 0");
require(_token != address(this) || !tradingActive, "Can't withdraw native tokens while trading is active");
uint256 _contractBalance = IERC20(_token).balanceOf(address(this));
SafeERC20.safeTransfer(IERC20(_token),_to, _contractBalance);
}
}
