Contract Source Code:
// 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);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
*
* Furthermore, `isContract` will also return true if the target contract within
* the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
* which only has an effect at the end of a transaction.
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
(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);
}
}
}
// 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;
}
}
// 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
pragma solidity ^0.8.0;
interface IDynamicThresholdOracle {
function getBuyThreshold() external view returns (uint);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
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;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface IUniswapV2Router02 {
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 swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}
// SPDX-License-Identifier: MIT
pragma solidity =0.8.19;
/*
MEGAMOON
$MEGAM
Website: https://megamooncoin.com/
Twitter: https://twitter.com/MEGAMOON_eth
Telegram: https://t.me/MEGAMOON_eth
*/
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "./interfaces/IUniswapV2Factory.sol";
import "./interfaces/IUniswapV2Router02.sol";
import "./interfaces/IDynamicThresholdOracle.sol";
contract MegaMoon is IERC20, Ownable {
using Address for address payable;
mapping (address => uint) private _rOwned;
mapping (address => uint) private _tOwned;
mapping (address => mapping (address => uint)) private _allowances;
mapping (address => bool) private _isExcludedFromFee;
mapping (address => bool) private _isExcluded;
address[] private _excluded;
bool public swapEnabled;
bool private swapping;
bool public tradingEnabled;
IUniswapV2Router02 public router;
IDynamicThresholdOracle public oracle;
address public pair;
address public buybackWallet;
address public marketingWallet;
uint8 private constant _decimals = 18;
uint private constant MAX = ~uint(0);
uint private _tTotal = 1_000_000_000 * 10**_decimals;
uint private _rTotal = (MAX - (MAX % _tTotal));
uint public totalRfi;
uint public swapThreshold = 2 * _tTotal / 1000; // 0.2%
uint public maxTxAmount = 10 * _tTotal / 1000; // 1.0%
uint public maxWalletAmount = 20 * _tTotal / 1000; // 2.0%
uint public staticBuyThreshold = _tTotal / 1000; // 0.1%
uint public startBlock;
uint public offlineBlocks = 5;
uint public buyTax = 150; // 15% during offline blocks
uint public sellTax = 150; // 15% max sell tax
uint public dynamicTax = 30; // 3% -> 0%, 3%, 6%, 9%, 12%, 15%
uint public maxSellTax = 150; // 15%
string private constant _name = "MEGAMOON";
string private constant _symbol = "MEGAM";
struct TaxesPercentage {
uint rfi;
uint buyback;
uint marketing;
}
TaxesPercentage public taxesPercentage = TaxesPercentage(40, 40, 20);
struct valuesFromGetValues {
uint rAmount;
uint rTransferAmount;
uint rRfi;
uint rSwap;
uint tTransferAmount;
uint tRfi;
uint tSwap;
}
modifier lockTheSwap {
swapping = true;
_;
swapping = false;
}
modifier onlyOwnerOrOracle {
require(
msg.sender == owner() ||
msg.sender == address(oracle),
"Only the owner or oracle can make this call!"
);
_;
}
constructor (
address _routerAddress,
address _buybackWallet,
address _marketingWallet
) {
IUniswapV2Router02 _router = IUniswapV2Router02(_routerAddress);
address _pair = IUniswapV2Factory(_router.factory())
.createPair(address(this), _router.WETH());
router = _router;
pair = _pair;
excludeFromReward(pair);
excludeFromReward(address(0xdead));
_rOwned[msg.sender] = _rTotal;
_isExcludedFromFee[msg.sender] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[address(0xdead)] = true;
_isExcludedFromFee[_marketingWallet]=true;
_isExcludedFromFee[_buybackWallet] = true;
marketingWallet = _marketingWallet;
buybackWallet = _buybackWallet;
emit Transfer(address(0), msg.sender, _tTotal);
}
function name() public pure returns (string memory) {
return _name;
}
function symbol() public pure returns (string memory) {
return _symbol;
}
function decimals() public pure returns (uint8) {
return _decimals;
}
function totalSupply() public view override returns (uint) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint) {
if (_isExcluded[account]) return _tOwned[account];
return tokenFromReflection(_rOwned[account]);
}
function transfer(address recipient, uint amount) public override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view override returns (uint) {
return _allowances[owner][spender];
}
function approve(address spender, uint amount) public override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
_approve(sender, _msgSender(), currentAllowance - amount);
return true;
}
function increaseAllowance(address spender, uint addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
function decreaseAllowance(address spender, uint subtractedValue) public virtual returns (bool) {
uint currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
return true;
}
function isExcludedFromReward(address account) public view returns (bool) {
return _isExcluded[account];
}
function tokenFromReflection(uint rAmount) public view returns(uint) {
require(rAmount <= _rTotal, "Amount must be less than total reflections");
uint currentRate = _getRate();
return rAmount / currentRate;
}
function excludeFromReward(address account) public onlyOwner {
require(!_isExcluded[account], "Account is already excluded");
if(_rOwned[account] > 0) {
_tOwned[account] = tokenFromReflection(_rOwned[account]);
}
_isExcluded[account] = true;
_excluded.push(account);
}
function includeInReward(address account) external onlyOwner {
require(_isExcluded[account], "Account is not excluded");
for (uint i = 0; i < _excluded.length; i++) {
if (_excluded[i] == account) {
_excluded[i] = _excluded[_excluded.length - 1];
_tOwned[account] = 0;
_isExcluded[account] = false;
_excluded.pop();
break;
}
}
}
function excludeFromFee(address account, bool status) public onlyOwner {
_isExcludedFromFee[account] = status;
}
function isExcludedFromFee(address account) public view returns (bool) {
return _isExcludedFromFee[account];
}
function buyThreshold() public view returns (uint) {
return address(oracle) != address(0x0) ? oracle.getBuyThreshold() : staticBuyThreshold;
}
function _reflectRfi(uint rRfi, uint tRfi) private {
_rTotal -= rRfi;
totalRfi += tRfi;
}
function _takeSwapFees(uint rValue, uint tValue) private {
if (_isExcluded[address(this)])
{
_tOwned[address(this)]+= tValue;
}
_rOwned[address(this)] += rValue;
}
function _getValues(uint tAmount, bool takeFee, bool isSell) private view returns (valuesFromGetValues memory to_return) {
to_return = _getTValues(tAmount, takeFee, isSell);
(to_return.rAmount, to_return.rTransferAmount, to_return.rRfi, to_return.rSwap) = _getRValues(to_return, tAmount, takeFee, _getRate());
return to_return;
}
function _getTValues(uint tAmount, bool takeFee, bool isSell) private view returns (valuesFromGetValues memory s) {
if (!takeFee) {
s.tTransferAmount = tAmount;
return s;
}
uint tempTax = isSell ? sellTax : buyTax;
uint rfiTax = tempTax * taxesPercentage.rfi / 100;
uint swapTax = tempTax * (100 - taxesPercentage.rfi) / 100;
s.tRfi = tAmount * rfiTax / 1000;
s.tSwap = tAmount * swapTax / 1000;
s.tTransferAmount = tAmount - s.tRfi - s.tSwap;
return s;
}
function _getRValues(valuesFromGetValues memory s, uint tAmount, bool takeFee, uint currentRate) private pure returns (uint rAmount, uint rTransferAmount, uint rRfi, uint rSwap) {
rAmount = tAmount*currentRate;
if (!takeFee) {
return (rAmount, rAmount, 0, 0);
}
rRfi = s.tRfi * currentRate;
rSwap = s.tSwap * currentRate;
rTransferAmount = rAmount - rRfi - rSwap;
return (rAmount, rTransferAmount, rRfi, rSwap);
}
function _getRate() private view returns (uint) {
(uint rSupply, uint tSupply) = _getCurrentSupply();
return rSupply / tSupply;
}
function _getCurrentSupply() private view returns (uint, uint) {
uint rSupply = _rTotal;
uint tSupply = _tTotal;
for (uint i = 0; i < _excluded.length; i++) {
if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal);
rSupply = rSupply-_rOwned[_excluded[i]];
tSupply = tSupply-_tOwned[_excluded[i]];
}
if (rSupply < _rTotal / _tTotal) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
function _approve(address owner, address spender, uint amount) private {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer(address from, address to, uint amount) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
require(amount <= balanceOf(from), "You are trying to transfer more than your balance");
if (buyTax != 0 && tradingEnabled) {
if (startBlock + offlineBlocks < block.number) buyTax = 0;
}
bool takeFee = false;
if (!_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {
require(tradingEnabled, "Liquidity has not been added yet");
require(amount <= maxTxAmount, "You are exceeding maxTxAmount");
if (to != pair) require(balanceOf(to) + amount <= maxWalletAmount, "You are exceeding maxWalletAmount");
takeFee = true;
if (from == pair && startBlock + offlineBlocks < block.number) {
takeFee = false;
if (amount >= buyThreshold()) {
if (sellTax >= dynamicTax) sellTax -= dynamicTax;
else sellTax = 0;
}
}
}
bool canSwap = balanceOf(address(this)) >= swapThreshold;
if (!swapping && swapEnabled && canSwap && from != pair && !_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {
swapTokensForFees(swapThreshold);
}
_tokenTransfer(from, to, amount, takeFee);
}
function _tokenTransfer(address sender, address recipient, uint tAmount, bool takeFee) private {
bool isSell = recipient == pair ? true : false;
valuesFromGetValues memory s = _getValues(tAmount, takeFee, isSell);
if (isSell && takeFee && startBlock + offlineBlocks < block.number) {
if (sellTax + dynamicTax > maxSellTax) sellTax = maxSellTax;
else sellTax += dynamicTax;
}
if (_isExcluded[sender] ) {
_tOwned[sender] = _tOwned[sender] - tAmount;
}
if (_isExcluded[recipient]) {
_tOwned[recipient] = _tOwned[recipient] + s.tTransferAmount;
}
_rOwned[sender] = _rOwned[sender] - s.rAmount;
_rOwned[recipient] = _rOwned[recipient] + s.rTransferAmount;
if (s.rRfi > 0 || s.tRfi > 0) _reflectRfi(s.rRfi, s.tRfi);
if (s.rSwap > 0 || s.tSwap > 0) _takeSwapFees(s.rSwap, s.tSwap);
emit Transfer(sender, recipient, s.tTransferAmount);
emit Transfer(sender, address(this), s.tSwap);
}
function swapTokensForFees(uint tokens) private lockTheSwap {
uint initialBalance = address(this).balance;
swapTokensForETH(tokens);
uint deltaBalance = address(this).balance - initialBalance;
uint totalPercent = 100 - taxesPercentage.rfi;
if (totalPercent == 0) return;
uint marketingAmount = deltaBalance * taxesPercentage.marketing / totalPercent;
if (marketingAmount > 0) payable(marketingWallet).sendValue(marketingAmount);
uint buybackAmount = deltaBalance - marketingAmount;
if (buybackAmount > 0) payable(buybackWallet).sendValue(buybackAmount);
}
function swapTokensForETH(uint tokenAmount) private {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = router.WETH();
_approve(address(this), address(router), tokenAmount);
router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0, // accept any amount of ETH
path,
address(this),
block.timestamp
);
}
function enableTrading() external onlyOwner {
tradingEnabled = true;
swapEnabled = true;
startBlock = block.number;
}
function updateOracle(address newOracle) external onlyOwnerOrOracle {
oracle = IDynamicThresholdOracle(newOracle);
}
function updateMarketingWallet(address newWallet) external onlyOwner {
marketingWallet = newWallet;
_isExcludedFromFee[marketingWallet] = true;
}
function updateBuybackWallet(address newWallet) external onlyOwner {
buybackWallet = newWallet;
_isExcludedFromFee[buybackWallet] = true;
}
function setTaxesPercentage(uint _rfi, uint _buyback, uint _marketing) external onlyOwner {
require(_rfi + _buyback + _marketing == 100, "Total must be 100");
taxesPercentage = TaxesPercentage(_rfi, _buyback, _marketing);
}
function updateThreshold(uint amount) external onlyOwner {
staticBuyThreshold = amount * 10**_decimals;
}
function updateMaxTxAmount(uint amount) external onlyOwner {
maxTxAmount = amount * 10**_decimals;
}
function updateMaxWallet(uint amount) external onlyOwner {
maxWalletAmount = amount * 10**_decimals;
}
function updateSwapThreshold(uint amount) external onlyOwner {
swapThreshold = amount * 10**_decimals;
}
function updateSwapEnabled(bool _enabled) external onlyOwner {
swapEnabled = _enabled;
}
function updatePair(address newRouter, address newPair) external onlyOwner {
router = IUniswapV2Router02(newRouter);
pair = newPair;
}
function updateDynamicTax(uint amount) external onlyOwner {
dynamicTax = amount;
}
function updateMaxSellTax(uint amount) external onlyOwner {
maxSellTax = amount;
}
function rescueETH() external onlyOwner {
payable(msg.sender).transfer(address(this).balance);
}
function rescueTokens(address _token) external onlyOwner {
require(_token != address(this), "Can not rescue own token!");
IERC20(_token).transfer(owner(), IERC20(_token).balanceOf(address(this)));
}
function distributeAirdrop(address[] calldata recipients, uint[] calldata amounts) external onlyOwner {
require(recipients.length == amounts.length, "Error in arrays!");
for (uint256 i = 0; i < recipients.length; i++) {
_transfer(_msgSender(), recipients[i], amounts[i] * 10**_decimals);
}
}
receive() external payable {}
}