// File: @openzeppelin\contracts\utils\Context.sol
// 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;
}
}
// File: @openzeppelin\contracts\access\Ownable.sol
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)
pragma solidity ^0.8.0;
/**
* @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 Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_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);
}
}
// File: @openzeppelin\contracts\token\ERC20\IERC20.sol
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `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 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);
}
// File: @openzeppelin\contracts\token\ERC20\extensions\IERC20Metadata.sol
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
pragma solidity ^0.8.0;
/**
* @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);
}
// File: @openzeppelin\contracts\token\ERC20\ERC20.sol
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/ERC20.sol)
pragma solidity ^0.8.0;
/**
* @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}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* 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}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* 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 value {ERC20} uses, unless this function is
* 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, _allowances[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 = _allowances[owner][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(owner, spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* 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;
}
_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;
_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;
}
_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 Spend `amount` form the allowance of `owner` toward `spender`.
*
* 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 {}
}
// File: contracts\Skyward.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;
/* ------------------------------------------ Imports ------------------------------------------ */
/* -------------------------------------- Dex Interfaces --------------------------------------- */
interface IDexFactory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IDexRouter {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
}
/* --------------------------------------- Main Contract --------------------------------------- */
contract Skyward is ERC20, Ownable {
/* ----------------------------------- State Variables ------------------------------------ */
IDexRouter private immutable uniswapV2Router;
address private immutable uniswapV2Pair;
address[] private wethContractPath;
mapping (address => bool) private excludedFromFees;
mapping (address => uint256) public owedRewards;
address public skyRewards;
address public skyTreasury;
uint256 public maxWallet;
uint256 public baseFees;
uint256 public liquidityFee;
uint256 public treasuryFee;
uint256 private swapTokensAtAmount;
uint256 private tokensForLiquidity;
uint256 private tokensForTreasury;
uint256 public bonusRewards;
uint256 public bonusRewardsMultiplier;
uint256 public rewardsFee;
uint256 public rewardsFeeMultiplier;
uint256 public currentAth;
uint256 public currentPrice;
uint256 public resetAthTime;
uint256 public supportThreshold;
event AthReset(uint256 newAth);
event UpdatedBaseFees(uint256 newAmount);
event UpdatedMaxWallet(uint256 newAmount);
event UpdatedMultipliers(uint256 newBonus, uint256 newRewards);
event UpdatedSkyRewardsAddress(address indexed newWallet);
event UpdatedSkyTreasuryAddress(address indexed newWallet);
event UpdatedSupportThreshold(uint256 newThreshold);
/* --------------------------------- Contract Constructor --------------------------------- */
constructor(address dexRouter) ERC20("Skyward", "SKY") {
uniswapV2Router = IDexRouter(dexRouter);
uniswapV2Pair = IDexFactory(uniswapV2Router.factory()).createPair(address(this), uniswapV2Router.WETH());
uint256 totalSupply = 100000000 * 10**18;
swapTokensAtAmount = totalSupply * 1 / 4000;
maxWallet = totalSupply * 2 / 100;
treasuryFee = 9;
liquidityFee = 1;
baseFees = treasuryFee + liquidityFee;
supportThreshold = 10;
bonusRewardsMultiplier = 2;
rewardsFeeMultiplier = 2;
excludeFromFees(msg.sender, true);
excludeFromFees(address(this), true);
excludeFromFees(address(0), true);
wethContractPath = [uniswapV2Router.WETH(), address(this)];
_mint(msg.sender, totalSupply);
transferOwnership(msg.sender);
}
receive() external payable {}
/* ------------------------------- Main Contract Functions -------------------------------- */
// Transfer tokens
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");
require(amount > 0, "Amount must be greater than 0");
if (!excludedFromFees[from] && !excludedFromFees[to]) {
if (to != uniswapV2Pair) {
require(amount + balanceOf(to) <= maxWallet, "Exceeds max wallet");
}
checkPrice();
if (from == uniswapV2Pair) {
uint256 bonus = 0;
bonus = amount * bonusRewards / 100 + owedRewards[to];
if (bonus > 0) {
if (bonus <= balanceOf(skyRewards)) {
super._transfer(skyRewards, to, bonus);
delete owedRewards[to];
} else {
owedRewards[to] += bonus;
}
}
} else if (to == uniswapV2Pair && baseFees > 0) {
if (balanceOf(address(this)) >= swapTokensAtAmount) {
swapBack();
}
uint256 fees = 0;
uint256 penaltyFees = 0;
fees = amount * baseFees / 100;
penaltyFees = amount * rewardsFee / 100;
tokensForTreasury += fees * treasuryFee / baseFees;
tokensForLiquidity += fees * liquidityFee / baseFees;
if (fees > 0) {
super._transfer(from, address(this), fees);
}
if (penaltyFees > 0) {
super._transfer(from, skyRewards, penaltyFees);
}
if (owedRewards[from] > 0 && owedRewards[from] <= balanceOf(skyRewards)) {
super._transfer(skyRewards, from, owedRewards[from]);
delete owedRewards[from];
}
amount -= fees + penaltyFees;
}
}
super._transfer(from, to, amount);
}
// Claim owed rewards (manual implementation)
function claimOwed() external {
require(owedRewards[msg.sender] > 0, "You have no owed rewards");
require(owedRewards[msg.sender] <= balanceOf(skyRewards), "Insufficient rewards in rewards pool");
super._transfer(skyRewards, msg.sender, owedRewards[msg.sender]);
delete owedRewards[msg.sender];
}
/* ----------------------------------- Owner Functions ------------------------------------ */
// Withdraw stuck ETH
function clearStuckBalance() external onlyOwner {
bool success;
(success,) = address(msg.sender).call{value: address(this).balance}("");
}
// Exclude an address from transaction fees
function excludeFromFees(address account, bool excluded) public onlyOwner {
excludedFromFees[account] = excluded;
}
// Set the current ATH to current price (manual implementation)
function resetAthManual() external onlyOwner {
currentPrice = getCurrentPrice();
require(currentPrice != 0, "Not a valid price");
resetAth(currentPrice);
emit AthReset(currentPrice);
}
// Designate rewards address
function setSkyRewardsAddress(address _skyRewards) external onlyOwner {
require(_skyRewards != address(0), "_skyRewards address cannot be the zero address");
skyRewards = _skyRewards;
emit UpdatedSkyRewardsAddress(skyRewards);
}
// Designate treasury address
function setSkyTreasuryAddress(address _skyTreasury) external onlyOwner {
require(_skyTreasury != address(0), "_skyTreasury address cannot be the zero address");
skyTreasury = payable(_skyTreasury);
emit UpdatedSkyTreasuryAddress(skyTreasury);
}
// Withdraw non-native tokens
function transferForeignToken(address _token, address _to) external onlyOwner returns (bool _sent) {
require(_token != address(0), "_token address cannot be the zero address");
require(_token != address(this), "Can't withdraw native tokens");
uint256 _contractBalance = IERC20(_token).balanceOf(address(this));
_sent = IERC20(_token).transfer(_to, _contractBalance);
}
// Update fees
function updateFees(uint256 _treasuryFee, uint256 _liquidityFee) external onlyOwner {
require(_treasuryFee + _liquidityFee <= 10, "Must keep fees at 10% or less");
treasuryFee = _treasuryFee;
liquidityFee = _liquidityFee;
baseFees = treasuryFee + liquidityFee;
emit UpdatedBaseFees(baseFees);
}
// Update max wallet
function updateMaxWallet(uint256 _maxWallet) external onlyOwner {
require(_maxWallet > 0, "Max wallet must be greater than 0%");
maxWallet = totalSupply() * _maxWallet / 100;
emit UpdatedMaxWallet(maxWallet);
}
// Update bonus rewards and rewards fee multipliers
function updateMultipliers(uint256 _bonusRewardsMultiplier, uint256 _rewardsFeeMultiplier) external onlyOwner {
require(_bonusRewardsMultiplier > 0, "Bonus rewards multiplier cannot be 0");
require(_bonusRewardsMultiplier <= 5, "Bonus rewards multiplier greater than 5");
require(_rewardsFeeMultiplier <= 2, "Rewards fee multiplier greater than 2");
bonusRewardsMultiplier = _bonusRewardsMultiplier;
rewardsFeeMultiplier = _rewardsFeeMultiplier;
emit UpdatedMultipliers(bonusRewardsMultiplier, rewardsFeeMultiplier);
}
// Update support threshold
function updateSupportThreshold(uint256 _supportThreshold) external onlyOwner {
require(_supportThreshold >= 5 , "Threshold lower than 5%");
require(_supportThreshold <= 20, "Threshold greater than 20%");
supportThreshold = _supportThreshold;
emit UpdatedSupportThreshold(supportThreshold);
}
// Update token threshold for when the contract sells for liquidity and treasury
function updateSwapTokensAtAmount(uint256 _swapTokensAtAmount) external onlyOwner {
require(_swapTokensAtAmount <= (totalSupply() * 1 / 1000) / 10**18, "Threshold higher than 0.1% total supply");
swapTokensAtAmount = _swapTokensAtAmount * 10**18;
}
/* ------------------------------- Private Helper Functions ------------------------------- */
// Liquidity injection helper function
function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.addLiquidityETH{value: ethAmount}(
address(this),
tokenAmount,
0,
0,
owner(),
block.timestamp
);
}
// Check current price and modify bonus rewards & reward fees accordingly
function checkPrice() private {
currentPrice = getCurrentPrice();
require(currentPrice != 0, "Not a valid price");
if (currentPrice <= currentAth || currentAth == 0) {
resetAth(currentPrice);
} else if (currentPrice > currentAth) {
if (resetAthTime == 0) {
resetAthTime = block.timestamp + 7 * 1 days;
} else {
if (block.timestamp >= resetAthTime) {
resetAth(currentPrice);
}
}
uint256 priceDifference = (10000 - (10000 * currentAth / currentPrice));
if (priceDifference / 100 >= supportThreshold) {
bonusRewards = bonusRewardsMultiplier * supportThreshold;
rewardsFee = rewardsFeeMultiplier * supportThreshold;
} else {
if (priceDifference % 100 >= 50) {
bonusRewards = bonusRewardsMultiplier * ((priceDifference / 100) + 1);
rewardsFee = rewardsFeeMultiplier * ((priceDifference / 100) + 1);
} else {
bonusRewards = bonusRewardsMultiplier * ((priceDifference / 100));
rewardsFee = rewardsFeeMultiplier * ((priceDifference / 100));
}
}
}
}
// Set the current ATH to current price
function resetAth(uint256 _currentPrice) private {
currentAth = _currentPrice;
resetAthTime = 0;
bonusRewards = 0;
rewardsFee = 0;
}
// Contract sells for liquidity and treasury
function swapBack() private {
uint256 contractBalance = balanceOf(address(this));
uint256 totalTokensToSwap = tokensForTreasury + tokensForLiquidity;
if (contractBalance == 0 || totalTokensToSwap == 0) {
return;
}
if (contractBalance > swapTokensAtAmount * 10) {
contractBalance = swapTokensAtAmount * 10;
}
bool success;
uint256 liquidityTokens = contractBalance * tokensForLiquidity / totalTokensToSwap / 2;
swapTokensForETH(contractBalance - liquidityTokens);
uint256 ethBalance = address(this).balance;
uint256 ethForTreasury = ethBalance * tokensForTreasury / (totalTokensToSwap - (tokensForLiquidity / 2));
uint256 ethForLiquidity = ethBalance - ethForTreasury;
tokensForLiquidity = 0;
tokensForTreasury = 0;
if (liquidityTokens > 0 && ethForLiquidity > 0) {
addLiquidity(liquidityTokens, ethForLiquidity);
}
(success,) = address(skyTreasury).call{value: address(this).balance}("");
}
// Swap native token for ETH
function swapTokensForETH(uint256 tokenAmount) private {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
/* -------------------------------- Public View Functions --------------------------------- */
// Retrieve current exchange rate of native token for 1 WETH
function getCurrentPrice() public view returns (uint256) {
try uniswapV2Router.getAmountsOut(1 * 10**18, wethContractPath) returns (uint256[] memory amounts) {
return amounts[1];
} catch {
return 0;
}
}
}
{
"compilationTarget": {
"Skyward.sol": "Skyward"
},
"evmVersion": "london",
"libraries": {},
"metadata": {
"bytecodeHash": "ipfs"
},
"optimizer": {
"enabled": false,
"runs": 200
},
"remappings": []
}
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