Contract Name:
CovidGambit
Contract Source Code:
/**
* ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡀⠀⠀⠀⣰⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
* ⠀⠀⠀⠀⠀⠀⠀⡀⠀⢀⠒⠑⣴⣦⣾⣧⣤⢀⡤⠀⠀⠀⡀⠀⠀⠀
* ⠀⠀⠀⠀⢀⠀⢀⡘⠉⠁⣰⣾⣿⣿⣿⣿⣿⣿⣷⢀⡤⠊⠀⠀⠀⠀
* ⠀⠀⠀⠀⠀⢱⠊⡄⠒⠾⣿⣿⣿⣿⣿⣿⠿⠛⢹⣿⣯⣤⠤⠄⠀⠀
* ⠀⠀⠀⠒⢦⠂⠀⣇⠀⠸⠟⢈⣿⣿⡁⠺⠗⠀⣸⣿⣿⣃⠀⠀⠀⠀
* ⠀⠀⠀⠀⢘⢀⣼⠻⢷⣶⣶⣿⣿⣿⣿⣶⣶⣾⠟⣻⣿⡯⠁⠀⠀⠀
* ⠀⠀⠀⠉⠱⢾⣿⡀⠀⠈⠉⠙⠛⠛⠛⠉⠉⠀⢀⣿⣿⠿⠛⠒⠀⠀
* ⠀⠀⠀⠀⠔⢛⣿⣷⡈⠒⠀⠀⠀⠔⠁⠊⠒⢈⣾⣿⡏⠀⠀⠀⠀⠀
* ⠀⠀⠀⠀⠀⠜⠛⠿⣿⣶⣤⣀⣀⣀⣀⣤⣶⣿⠿⣿⠉⠀⠀⠀⠀⠀
* ⠀⠀⠀⠀⠀⠀⠀⡸⠛⢉⡿⠻⠟⣿⢿⡟⣏⠁⠀⠘⠄⠀⠀⠀⠀⠀
* ⠀⠀⠀⠀⠀⠀⠀⠀⠀⡜⠀⠀⠀⠁⠀⠃⠘⡀⠀⠀⠀⠀⠀
*
* COVID GAMBIT: A REVOLUTIONARY ERC-20 DIGITAL GAME INSPIRED BY REAL-WORLD PANDEMICS
*
* This document provides a comprehensive guide to understanding and navigating Covid Gambit,
* an innovative ERC-20 digital game that is based on real-world epidemiological events.
*
* Gameplay Guidelines:
*
* Participants can acquire $COVID tokens via Uniswap. Upon every transaction, there exists a 10% probability
* that the participant will become an index case, or in gaming terms, "infected".
*
* Once a player is designated as infected, they are faced with a decision: to potentially infect others
* by utilizing the "sneeze" function or to self-isolate in the quarantine module. It is crucial to
* note that infected players have a time constraint of 48 hours to make this decision, failure to which
* results in game "death" due to disease progression, thereby disabling the ability to transfer tokens.
*
* The "sneeze" function carries a dual probability: a 30% chance of the infected player gaining immunity
* and a 100% probability of the target player becoming infected. Therefore, on average, an infected player
* must "sneeze" on three non-infected wallets to gain immunity and continue the spread of infection.
* Immunity provides a one-week protection from being "sneezed on" by other players. This function is only
* applicable to non-infected players.
*
* Alternatively, an infected player may choose to enter the quarantine module, which requires a one-week
* commitment during which the player cannot transfer tokens. Upon completion of the quarantine period, the
* player will be considered "healthy". Access to the quarantine module is restricted to infected players only.
*
* Non-infected or "healthy" players can maintain their status by executing the washHands() function, granting
* them immunity for an 24-hour period, during which they are unaffected by the "sneeze" function of other
* players. Regular execution of the washHands() function is advised to maintain player health.
*
* Game Dynamics:
*
* As per the game's mechanics, only 33% of players can achieve long-term immunity. Given the restriction
* against "sneezing" on other infected players, a player's options are limited to either entering the
* week-long quarantine module (locking tokens), or exiting the game by selling their tokens.
*
* Strategic Considerations:
*
* The goal of this game is twofold: to maintain individual health for the longest possible duration and to
* collectively combat the pandemic. Players are faced with a moral dilemma: do they infect others to gain
* immunity, or do they choose to quarantine, promoting collective efforts to end the pandemic?
* The choice is in the hands of each player.
*
* Website: covidgambit.com
* Twitter: twitter.com/CovidGambitGame
* Telegram: t.me/CovidGambit
*/
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;
import "lib/openzeppelin-contracts/contracts/token/ERC20/ERC20.sol";
import "lib/openzeppelin-contracts/contracts/access/Ownable.sol";
import "interfaces/IUniswapV2Router02.sol";
import "interfaces/IUniswapV2Pair.sol";
import "interfaces/IUniswapV2Factory.sol";
contract CovidGambit is ERC20, Ownable {
mapping(address => bool) public isVaxxed;
mapping(address => uint256) public firstInfectedTime;
mapping(address => uint256) public immunityEndTime;
mapping(address => uint256) public quarantineEndTime;
bool plandemicStarted;
event Sneezed(address indexed patient, address indexed target, bool indexed gotImmunity);
event GotCovid(address indexed patient, address indexed from);
event WashedHands(address indexed patient, uint256 immunityEndTime);
event EnteredQuarantine(address indexed patient, uint256 quarantineEndTime);
IUniswapV2Pair public pair;
IUniswapV2Router02 public router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uint256 maxWallet;
constructor() ERC20("Covid Gambit", "COVID") {
getVaxxed(address(this));
getVaxxed(address(router));
getVaxxed(address(pair));
getVaxxed(msg.sender);
getVaxxed(0xEf1c6E67703c7BD7107eed8303Fbe6EC2554BF6B); // Universal router
_mint(msg.sender, 19_000_000e18);
pair = IUniswapV2Pair(IUniswapV2Factory(router.factory()).createPair(address(this), router.WETH()));
maxWallet = totalSupply() / 200; // 0.5% max wallet at launch
}
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual override {
// Launch stuff
if (from == address(pair) && !isVaxxed[to]) {
require(amount + balanceOf(to) <= maxWallet, "You can't buy that much right now");
}
if (plandemicStarted) {
// Infected dies in 48 hrs
if (!isHealthy(from)) {
require(!isDead(from), "You got covid and died");
}
// Can only buy and sell
require(from == address(pair) || to == address(pair) || isVaxxed[from], "You can't escape covid");
// Can't sell if in quarantine
require(!isQuarantined(from), "You are in quarantine");
// If you buy there's a 10% chance of contracting covid (if you dont have immunity)
if (from == address(pair) && !isImmune(to) && !isVaxxed[to]) {
if (isPatientZero(10, to) && !isInfected(to)) {
firstInfectedTime[to] = block.timestamp;
emit GotCovid(to, from);
}
}
}
super._beforeTokenTransfer(from, to, amount);
}
function sneeze(address target) public {
require(isInfected(msg.sender), "Not infected or already dead");
require(!isImmune(msg.sender), "Already has immunity");
require(!isQuarantined(msg.sender), "Already in quarantine");
require(balanceOf(msg.sender) > 0, "Covid denier");
require(!isImmune(target), "Target has immunity");
require(!isVaxxed[target], "Target is vaxxed");
require(!isQuarantined(target), "Target in quarantine");
require(isHealthy(target), "Target already infected or dead");
require(balanceOf(target) > 0, "Target is covid denier");
firstInfectedTime[target] = block.timestamp;
bool gotImmunity;
if (isPatientZero(30, target)) {
firstInfectedTime[msg.sender] = 0;
immunityEndTime[msg.sender] = block.timestamp + 7 days;
gotImmunity = true;
}
emit Sneezed(msg.sender, target, gotImmunity);
emit GotCovid(target, msg.sender);
}
function washHands() public {
require(isHealthy(msg.sender), "Already infected");
require(!isQuarantined(msg.sender), "Already in quarantine");
require(balanceOf(msg.sender) > 0, "Covid denier");
immunityEndTime[msg.sender] = block.timestamp + 24 hours;
emit WashedHands(msg.sender, immunityEndTime[msg.sender]);
}
function enterQuarantine() public {
require(isInfected(msg.sender), "Not infected or already dead");
require(!isQuarantined(msg.sender), "Already in quarantine");
require(!isImmune(msg.sender), "Already has immunity");
require(balanceOf(msg.sender) > 0, "Covid denier");
firstInfectedTime[msg.sender] = 0;
quarantineEndTime[msg.sender] = block.timestamp + 7 days;
emit EnteredQuarantine(msg.sender, quarantineEndTime[msg.sender]);
}
function plandemicStats(address[] memory patients)
public
view
returns (uint256, uint256, uint256, uint256, uint256)
{
uint256 healthyCount;
uint256 infectedCount;
uint256 quarantinedCount;
uint256 immuneCount;
uint256 deadCount;
for (uint256 i = 0; i < patients.length; i++) {
uint256 status = patientStatus(patients[i]);
if (status == 0) {
healthyCount++;
} else if (status == 1) {
infectedCount++;
} else if (status == 2) {
quarantinedCount++;
} else if (status == 3) {
immuneCount++;
} else if (status == 4) {
deadCount++;
}
}
return (healthyCount, infectedCount, quarantinedCount, immuneCount, deadCount);
}
function patientStatus(address patient) public view returns (uint256 status) {
if (isHealthy(patient) && !isQuarantined(patient) && !isImmune(patient) || isVaxxed[patient]) {
return 0;
} else if (isInfected(patient)) {
return 1;
} else if (isQuarantined(patient)) {
return 2;
} else if (isImmune(patient)) {
return 3;
} else if (isDead(patient)) {
return 4;
}
}
function startPlandemic(bool isStarted) public onlyOwner {
plandemicStarted = isStarted;
}
function getVaxxed(address patient) public onlyOwner {
isVaxxed[patient] = true;
}
function getUnvaxxed(address patient) public onlyOwner {
isVaxxed[patient] = false;
}
function setMaxWallet(uint256 _maxWallet) public onlyOwner {
maxWallet = _maxWallet;
}
function isPatientZero(uint256 chance, address patient) private returns (bool isIndeed) {
uint256 dna = uint256(keccak256(abi.encodePacked(patient, block.timestamp, balanceOf(patient)))) % 101;
return dna <= chance;
}
function isHealthy(address patient) private view returns (bool isIndeed) {
return firstInfectedTime[patient] == 0;
}
function isInfected(address patient) private view returns (bool isIndeed) {
return firstInfectedTime[patient] + 48 hours > block.timestamp;
}
function isQuarantined(address patient) private view returns (bool isIndeed) {
return quarantineEndTime[patient] > block.timestamp;
}
function isImmune(address patient) private view returns (bool isIndeed) {
return immunityEndTime[patient] > block.timestamp;
}
function isDead(address patient) private view returns (bool isIndeed) {
return firstInfectedTime[patient] + 48 hours < block.timestamp;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/ERC20.sol)
pragma solidity ^0.8.0;
import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";
/**
* @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.openzeppelin.com/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, 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 {}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (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 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);
}
}
pragma solidity >=0.6.2;
import './IUniswapV2Router01.sol';
interface IUniswapV2Router02 is IUniswapV2Router01 {
function removeLiquidityETHSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountETH);
function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountETH);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}
pragma solidity >=0.5.0;
interface IUniswapV2Pair {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
function name() external pure returns (string memory);
function symbol() external pure returns (string memory);
function decimals() external pure returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint);
function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
event Mint(address indexed sender, uint amount0, uint amount1);
event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
event Swap(
address indexed sender,
uint amount0In,
uint amount1In,
uint amount0Out,
uint amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint);
function factory() external view returns (address);
function token0() external view returns (address);
function token1() external view returns (address);
function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
function price0CumulativeLast() external view returns (uint);
function price1CumulativeLast() external view returns (uint);
function kLast() external view returns (uint);
function mint(address to) external returns (uint liquidity);
function burn(address to) external returns (uint amount0, uint amount1);
function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
function skim(address to) external;
function sync() external;
function initialize(address, address) external;
}
pragma solidity >=0.5.0;
interface IUniswapV2Factory {
event PairCreated(address indexed token0, address indexed token1, address pair, uint);
function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function getPair(address tokenA, address tokenB) external view returns (address pair);
function allPairs(uint) external view returns (address pair);
function allPairsLength() external view returns (uint);
function createPair(address tokenA, address tokenB) external returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (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 v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
pragma solidity ^0.8.0;
import "../IERC20.sol";
/**
* @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);
}
// 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;
}
}
pragma solidity >=0.6.2;
interface IUniswapV2Router01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint amountADesired,
uint amountBDesired,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB, uint liquidity);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function removeLiquidity(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB);
function removeLiquidityETH(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountToken, uint amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountA, uint amountB);
function removeLiquidityETHWithPermit(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountToken, uint amountETH);
function swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapTokensForExactTokens(
uint amountOut,
uint amountInMax,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}