Contract Source Code:
File 1 of 1 : MoonShot
// SPDX-License-Identifier: MIT
pragma solidity 0.8.20;
/**
* @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;
}
}
/**
* @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);
}
}
/**
* @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);
}
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
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);
}
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
*
* The default value of {decimals} is 18. To change this, you should override
* this function so it returns a different value.
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
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;
/**
* @dev Sets the values for {name} and {symbol}.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the default value returned by this function, unless
* it's overridden.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(
address account
) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(
address to,
uint256 amount
) public virtual override returns (bool) {
address owner = _msgSender();
_transfer(owner, to, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(
address owner,
address spender
) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
* `transferFrom`. This is semantically equivalent to an infinite approval.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(
address spender,
uint256 amount
) public virtual override returns (bool) {
address owner = _msgSender();
_approve(owner, spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* NOTE: Does not update the allowance if the current allowance
* is the maximum `uint256`.
*
* Requirements:
*
* - `from` and `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
* - the caller must have allowance for ``from``'s tokens of at least
* `amount`.
*/
function transferFrom(
address from,
address to,
uint256 amount
) public virtual override returns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, amount);
_transfer(from, to, amount);
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(
address spender,
uint256 addedValue
) public virtual returns (bool) {
address owner = _msgSender();
_approve(owner, spender, allowance(owner, spender) + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(
address spender,
uint256 subtractedValue
) public virtual returns (bool) {
address owner = _msgSender();
uint256 currentAllowance = allowance(owner, spender);
require(
currentAllowance >= subtractedValue,
"ERC20: decreased allowance below zero"
);
unchecked {
_approve(owner, spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `from` to `to`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
*/
function _transfer(
address from,
address to,
uint256 amount
) internal virtual {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(from, to, amount);
uint256 fromBalance = _balances[from];
require(
fromBalance >= amount,
"ERC20: transfer amount exceeds balance"
);
unchecked {
_balances[from] = fromBalance - amount;
// Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
// decrementing then incrementing.
_balances[to] += amount;
}
emit Transfer(from, to, amount);
_afterTokenTransfer(from, to, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
unchecked {
// Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
_balances[account] += amount;
}
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
// Overflow not possible: amount <= accountBalance <= totalSupply.
_totalSupply -= amount;
}
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
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);
}
/**
* @dev Updates `owner` s allowance for `spender` based on spent `amount`.
*
* Does not update the allowance amount in case of infinite allowance.
* Revert if not enough allowance is available.
*
* Might emit an {Approval} event.
*/
function _spendAllowance(
address owner,
address spender,
uint256 amount
) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance != type(uint256).max) {
require(
currentAllowance >= amount,
"ERC20: insufficient allowance"
);
unchecked {
_approve(owner, spender, currentAllowance - amount);
}
}
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
/// Uniswap factory interface
interface IFactory {
function createPair(
address tokenA,
address tokenB
) external returns (address pair);
}
/// Uniswap Router interface
interface IUniswapRouter {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function getAmountsOut(
uint256 amountIn,
address[] calldata path
) external view returns (uint256[] memory amounts);
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
) external payable;
}
/// @title MoonShot Index token
contract MoonShot is ERC20, Ownable {
/// @notice MAX SUPPLY 100 million tokens
uint256 private constant MAX_SUPPLY = 100_000_000 * 1e18;
/// @notice max wallet limit
uint256 public maxWallet = (MAX_SUPPLY * 6) / 100;
/// @notice max Tx amount
uint256 public maxTxAmount = (MAX_SUPPLY * 2) / 100;
/// @notice swap tokens at amount
uint256 public swapTokensAtAmount = 100000e18;
/// @notice fee divisor
uint256 public constant FEE_DIVISOR = 1000;
/// @notice marketing wallet
address public marketingWallet = address(0xe8f80939FD3d0beD793E452a5A635ab102D95d48);
/// @notice dev wallet
address public devWallet = address(0x448613f6d6F311f17ed630f32aEacF7aB12de15e);
/// @notice liquidity receiver wallet
address public lpReceiverWallet = address(0xeCceC24a442689169E057A37dd1b95F98c60684E);
/// @notice uniswapV2Router
IUniswapRouter public immutable uniswapV2Router;
/// @notice uniswapPair
address public immutable uniswapPair;
struct BuyFees {
uint256 marketing;
uint256 dev;
uint256 autoLP;
}
struct SellFees {
uint256 marketing;
uint256 dev;
uint256 autoLP;
}
/// @notice buyFee
BuyFees public buyFee;
/// @notice sellFee
SellFees public sellFee;
uint256 totalBuyFee;
uint256 totalSellFee;
/// @notice swapping status
bool swapping = false;
/// @notice enable normal tax mode
bool normalTaxMode = false;
/// @notice manage amm pairs
mapping(address => bool) public isMarketPair;
/// @notice manage exclude from fees
mapping(address => bool) public isExcludedFromFees;
/// @notice manage blacklist
mapping(address => bool) public isBlacklisted;
/// buy count
uint256 private buyCount;
/// errors
error OnlyMarketingWallet();
error EthClaimFailed();
error ZeroAddress();
error CannotModifyMainPair();
error CannotClaimNativeToken();
error UpdateBoolValue();
error FromOrToIsBlacklisted();
error MaxBuyPerTxExceeds();
error MaxSellPerTxExceeds();
error MaxWalletLimitExceeds();
event WalletsUpdated(
address indexed marketing,
address indexed dev,
address indexed lp
);
event BuyFeesUpdated(
uint256 indexed marketing,
uint256 indexed dev,
uint256 indexed lp
);
event SellFeesUpdated(
uint256 indexed marketing,
uint256 indexed dev,
uint256 indexed lp
);
constructor() ERC20("MoonShot Index", "MSHOT") {
uniswapV2Router = IUniswapRouter(
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D // uniswap v2 router eth
);
uniswapPair = IFactory(uniswapV2Router.factory()).createPair(
address(this),
uniswapV2Router.WETH()
);
isMarketPair[uniswapPair] = true;
buyFee.marketing = 20; // 2%
buyFee.dev = 20; // 2%
buyFee.autoLP = 10; // 1%
totalBuyFee = 50; // 5%
sellFee.marketing = 20; // 2%
sellFee.dev = 20; // 2%
sellFee.autoLP = 10; // 1%
totalSellFee = 50; // 5%
isExcludedFromFees[owner()] = true;
isExcludedFromFees[address(this)] = true;
_mint(msg.sender, MAX_SUPPLY);
}
receive() external payable {}
/// @dev claim any erc20 token apart from native token, accidently sent to token contract
/// @param token: token to rescue
/// @param amount: amount to rescue
/// Requirements -
/// only marketing wallet can rescue stucked tokens
function claimStuckedERC20(address token, uint256 amount) external {
if (msg.sender != marketingWallet) {
revert OnlyMarketingWallet();
}
if (token == address(this)) {
revert CannotClaimNativeToken();
}
// bytes4(keccak256(bytes('transfer(address,uint256)')));
(bool success, bytes memory data) = token.call(
abi.encodeWithSelector(0xa9059cbb, marketingWallet, amount)
);
require(
success && (data.length == 0 || abi.decode(data, (bool))),
"ERC20: TOKEN_CLAIM_FAILED"
);
}
/// @notice owner update the swap tokens at amount globally
/// limited to 1000 to 1,000,000 tokens
/// @param _newAmount: new swap tokens at amount
function setSwapTokensAtAmount(uint256 _newAmount) external onlyOwner {
if(_newAmount >= 1000 && _newAmount <= 1000000){
uint256 amount = _newAmount * 1e18;
swapTokensAtAmount = amount;
}
}
/// @dev enable normal tax mode
/// remove high tax globally before 25 buys
function switchToNormalTaxMode() external onlyOwner {
normalTaxMode = true;
}
/// @dev claim stucked eth
function claimStuckedEth(address wallet) external {
if (msg.sender != marketingWallet) {
revert OnlyMarketingWallet();
}
(bool sent, ) = wallet.call{value: address(this).balance}("");
if (!sent) {
revert EthClaimFailed();
}
}
/// @notice manage exclude/include from fees/limits
/// @param user: address of user to exclude or include
/// @param value: true or false (true to exclude and false to include)
function excludeFromFees(address user, bool value) external onlyOwner {
if (isExcludedFromFees[user] == value) {
revert UpdateBoolValue();
}
isExcludedFromFees[user] = value;
}
/// @dev update max wallet percent globally
/// @notice percent: new percent for max wallet
function setMaxWalletPercent(uint256 percent) external onlyOwner {
if (percent >= 1) {
maxWallet = (MAX_SUPPLY * percent) / 100;
}
}
/// @dev update max tx amount globally
/// @notice percent: new percent for max tx
function setMaxTxAmount(uint256 percent) external onlyOwner {
if (percent >= 1) {
maxTxAmount = (MAX_SUPPLY * percent) / 100;
}
}
/// @dev update buy fee globally
/// @param _mkt: new marketing fees on buy
/// @param _dev: new dev fees on buy
/// @param _lp: new autoLp fees on buy
/// max buy fees is limited to 10 percent
/// fees divisor is 1000, so 10 input means 1%
function setBuyFees(
uint256 _mkt,
uint256 _dev,
uint256 _lp
) external onlyOwner {
if (_mkt + _dev + _lp <= 100) {
buyFee.marketing = _mkt;
buyFee.dev = _dev;
buyFee.autoLP = _lp;
totalBuyFee = _mkt + _dev + _lp;
emit BuyFeesUpdated(_mkt, _dev, _lp);
}
}
/// @dev update sell fees globally
/// @param _mkt: new marketing fees on sell
/// @param _dev: new dev fees on sell
/// @param _lp: new autoLp fees on sell
/// max sell fees is limited to 10 percent
/// fees divisor is 1000, so 10 input means 1%
function setSellFees(
uint256 _mkt,
uint256 _dev,
uint256 _lp
) external onlyOwner {
if (_mkt + _dev + _lp <= 100) {
sellFee.marketing = _mkt;
sellFee.dev = _dev;
sellFee.autoLP = _lp;
totalSellFee = _mkt + _dev + _lp;
emit SellFeesUpdated(_mkt, _dev, _lp);
}
}
/// @notice manage blacklist of illicit accounts
/// @param account: account to exclude or include
/// @param value: true or false (true to exclude and false to include)
function blacklist(address account, bool value) external onlyOwner {
if (isBlacklisted[account] == value) {
revert UpdateBoolValue();
}
isBlacklisted[account] = value;
}
/// @dev blacklist multiple
/// @dev see{blacklist}
function blacklistMultiple(
address[] calldata accounts,
bool value
) external onlyOwner {
for (uint256 i = 0; i < accounts.length; ++i) {
isBlacklisted[accounts[i]] = value;
}
}
/// @dev add or remove new pairs
/// @param pair: new pair to be added or removed
/// @param value: bool value
function setMarketPair(address pair, bool value) external onlyOwner {
if (pair == uniswapPair) {
revert CannotModifyMainPair();
}
isMarketPair[pair] = value;
}
/// @dev update dev and marketing wallet
/// @param _market new marketing wallet
/// @param _dev new dev wallet
/// @param _lp new lp receiver wallet
function setWallets(
address _market,
address _dev,
address _lp
) external onlyOwner {
if (_market != address(0) && _dev != address(0)) {
devWallet = _dev;
marketingWallet = _market;
lpReceiverWallet = _lp;
emit WalletsUpdated(_market, _dev, _lp);
}
}
/// @notice manage token transfer and fees
/// starting from 30% to normal tax as follows
/// first 5 buys - 30%
/// next 5 buys - 25%
/// next 5 buys - 20%
/// next 5 buys - 15%
/// next 5 buys - 10%
/// after global normal tax
/// on sell side, if sold within first 10 buys, it's 10 percent
/// else global sell tax
/// owner can switch to normal before 30 buys if he want
/// @dev See {ERC20-_transfer}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
bool takeFee = true;
if (isBlacklisted[to] || isBlacklisted[from]) {
revert FromOrToIsBlacklisted();
}
if (isExcludedFromFees[from] || isExcludedFromFees[to]) {
takeFee = false;
}
if (takeFee) {
uint256 fee;
if (!isMarketPair[to]) {
if (balanceOf(to) + amount > maxWallet) {
revert MaxWalletLimitExceeds();
}
}
if (isMarketPair[from]) {
if (amount > maxTxAmount) {
revert MaxBuyPerTxExceeds();
}
if (totalBuyFee > 0) {
if (buyCount > 25 || normalTaxMode) {
fee = (amount * totalBuyFee) / FEE_DIVISOR;
} else {
uint buyf;
if (buyCount <= 5) {
buyf = 300;
} else if (buyCount > 5 && buyCount <= 10) {
buyf = 250;
} else if (buyCount > 10 && buyCount <= 15) {
buyf = 200;
} else if (buyCount > 15 && buyCount <= 20) {
buyf = 150;
} else {
buyf = 100;
}
fee = (amount * buyf) / FEE_DIVISOR;
buyCount++;
}
}
} else if (isMarketPair[to]) {
if (amount > maxTxAmount) {
revert MaxSellPerTxExceeds();
}
if (totalSellFee > 0) {
if (buyCount > 10 || normalTaxMode) {
fee = (amount * totalSellFee) / FEE_DIVISOR;
} else {
fee = (amount * 100) / FEE_DIVISOR;
}
}
}
amount = amount - fee;
if (fee > 0) {
super._transfer(from, address(this), fee);
}
}
uint256 contractBalance = balanceOf(address(this));
bool canSwap = contractBalance >= swapTokensAtAmount &&
!isMarketPair[from] &&
from != owner() &&
!swapping;
if (canSwap) {
swapping = true;
swapAndLiquify(contractBalance);
swapping = false;
}
super._transfer(from, to, amount);
}
/// @notice swap and liquify
/// transfer collected tax to designated addresses as per there share
function swapAndLiquify(uint256 amount) private {
uint256 totalFees = totalBuyFee + totalSellFee;
if (totalFees > 0) {
uint256 tokensForLP = (amount * (buyFee.autoLP + sellFee.autoLP)) /
(totalFees);
uint256 lpHalf = tokensForLP / 2;
uint256 devTokens = (amount * (buyFee.dev + sellFee.dev)) /
totalFees;
uint256 tokensForSwap = amount - lpHalf;
uint256 ethBeforeSwap = address(this).balance;
if (tokensForSwap > 0) {
swapTokensForETH(tokensForSwap);
}
uint256 newEth = address(this).balance - ethBeforeSwap;
uint256 ethForLp = (newEth * lpHalf) / tokensForSwap;
uint256 ethForDev = (newEth * devTokens) / tokensForSwap;
bool sent;
/// add liquidity
if (ethForLp > 0 && lpHalf > 0) {
addLiquidity(ethForLp, lpHalf);
}
/// send dev eth share to dev wallet
if (ethForDev > 0) {
(sent, ) = devWallet.call{value: ethForDev}("");
}
/// sent remaining eth to marketing wallet
if (address(this).balance > 0) {
(sent, ) = marketingWallet.call{value: address(this).balance}(
""
);
}
} else {
swapTokensForETH(amount);
bool y;
(y, ) = marketingWallet.call{value: address(this).balance}("");
}
}
/// @notice add lp with given tokens and eth
function addLiquidity(uint256 eth, uint256 tokens) private {
if (allowance(address(this), address(uniswapV2Router)) < tokens) {
_approve(
address(this),
address(uniswapV2Router),
type(uint256).max
);
}
uniswapV2Router.addLiquidityETH{value: eth}(
address(this),
tokens,
0,
0,
lpReceiverWallet, // burn lp
block.timestamp + 360
);
}
///@notice swap the tax tokens for eth and send to marketing wallet
function swapTokensForETH(uint256 tokenAmount) private {
// generate the uniswap pair path of token -> weth
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
if (allowance(address(this), address(uniswapV2Router)) < tokenAmount) {
_approve(
address(this),
address(uniswapV2Router),
type(uint256).max
);
}
// make the swap
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp + 360
);
}
}