Contract Name:
VestedRootSale
Contract Source Code:
File 1 of 1 : VestedRootSale
pragma solidity ^0.8.0;
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)
/**
* @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);
}
interface IROOT is IERC20{
function mint(address to, uint256 amount) external;
}
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
/**
* @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);
}
}
contract VestedRootSale is Ownable{
uint256 public pricePerToken;
uint256 public purchaseCap;
uint256 public purchased;
uint256 public tgeTime;
uint256 public cliffDuration;
uint256 public vestingDuration;
uint16 public upfrontBP;
bool public saleActive;
mapping (address => uint256) public userPurchased;
mapping (address => uint256) public claimed;
IROOT public root;
event Purchase(address indexed user, uint256 amount);
constructor(
uint256 _pricePerToken,
uint256 _purchaseCap,
uint256 _cliffDuration,
uint256 _vestingDuration,
uint16 _upfrontBP
) {
pricePerToken = _pricePerToken;
purchaseCap = _purchaseCap;
cliffDuration = _cliffDuration;
vestingDuration = _vestingDuration;
upfrontBP = _upfrontBP;
}
function purchase() public payable {
require(saleActive, "sale is not active");
uint256 amount = msg.value * 1e18 / pricePerToken;
require(purchased + amount <= purchaseCap, "purchase cap reached");
purchased += amount;
userPurchased[msg.sender] += amount;
emit Purchase(msg.sender, amount);
}
function claim() public {
require(tgeTime > 0, "tge time not set");
require(block.timestamp >= tgeTime, "tge has not passed");
uint256 amount = claimable(msg.sender);
require(amount > 0, "nothing to claim");
claimed[msg.sender] += amount;
root.mint(msg.sender, amount);
}
function claimable(address user) public view returns (uint256) {
if (tgeTime == 0) return 0;
if (userPurchased[user] == 0) return 0;
if (claimed[user] >= userPurchased[user]) return 0;
uint256 cliffTime = tgeTime + cliffDuration;
if (block.timestamp < cliffTime) return 0;
uint256 endVesting = cliffTime + vestingDuration;
if (block.timestamp >= endVesting) return userPurchased[user] - claimed[user];
uint256 vested = userPurchased[user] * (10000 - upfrontBP) * (block.timestamp - cliffTime) / vestingDuration / 10000;
uint256 upfront = userPurchased[user] * upfrontBP / 10000;
return vested + upfront - claimed[user];
}
function setTgeTime(uint256 _tgeTime) public onlyOwner {
require(saleActive == false, "sale already active");
require(tgeTime == 0, "tge time already set");
tgeTime = _tgeTime;
}
function setRoot(address _root) public onlyOwner {
root = IROOT(_root);
}
function setSaleActive(bool _saleActive) public onlyOwner {
require(tgeTime == 0, "tge time already set");
saleActive = _saleActive;
}
function withdrawETH() public onlyOwner {
payable(msg.sender).transfer(address(this).balance);
}
}