Contract Name:
StakeSpacePi
Contract Source Code:
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
_checkOwner();
_;
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if the sender is not the owner.
*/
function _checkOwner() internal view virtual {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby disabling any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol)
pragma solidity ^0.8.0;
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
* available, which can be applied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*
* TIP: If you would like to learn more about reentrancy and alternative ways
* to protect against it, check out our blog post
* https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
*/
abstract contract ReentrancyGuard {
// Booleans are more expensive than uint256 or any type that takes up a full
// word because each write operation emits an extra SLOAD to first read the
// slot's contents, replace the bits taken up by the boolean, and then write
// back. This is the compiler's defense against contract upgrades and
// pointer aliasing, and it cannot be disabled.
// The values being non-zero value makes deployment a bit more expensive,
// but in exchange the refund on every call to nonReentrant will be lower in
// amount. Since refunds are capped to a percentage of the total
// transaction's gas, it is best to keep them low in cases like this one, to
// increase the likelihood of the full refund coming into effect.
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
constructor() {
_status = _NOT_ENTERED;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and making it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
_nonReentrantBefore();
_;
_nonReentrantAfter();
}
function _nonReentrantBefore() private {
// On the first call to nonReentrant, _status will be _NOT_ENTERED
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
}
function _nonReentrantAfter() private {
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
/**
* @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
* `nonReentrant` function in the call stack.
*/
function _reentrancyGuardEntered() internal view returns (bool) {
return _status == _ENTERED;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/IERC20Permit.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
* https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
*
* Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
* presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
* need to send a transaction, and thus is not required to hold Ether at all.
*/
interface IERC20Permit {
/**
* @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
* given ``owner``'s signed approval.
*
* IMPORTANT: The same issues {IERC20-approve} has related to transaction
* ordering also apply here.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `deadline` must be a timestamp in the future.
* - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
* over the EIP712-formatted function arguments.
* - the signature must use ``owner``'s current nonce (see {nonces}).
*
* For more information on the signature format, see the
* https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
* section].
*/
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
/**
* @dev Returns the current nonce for `owner`. This value must be
* included whenever a signature is generated for {permit}.
*
* Every successful call to {permit} increases ``owner``'s nonce by one. This
* prevents a signature from being used multiple times.
*/
function nonces(address owner) external view returns (uint256);
/**
* @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
*/
// solhint-disable-next-line func-name-mixedcase
function DOMAIN_SEPARATOR() external view returns (bytes32);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `from` to `to` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address from, address to, uint256 amount) external returns (bool);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
import "../IERC20.sol";
import "../extensions/IERC20Permit.sol";
import "../../../utils/Address.sol";
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using Address for address;
/**
* @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
* non-reverting calls are assumed to be successful.
*/
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
/**
* @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
* calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
*/
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
/**
* @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
* non-reverting calls are assumed to be successful.
*/
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 oldAllowance = token.allowance(address(this), spender);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
}
/**
* @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
* non-reverting calls are assumed to be successful.
*/
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
}
}
/**
* @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
* non-reverting calls are assumed to be successful. Compatible with tokens that require the approval to be set to
* 0 before setting it to a non-zero value.
*/
function forceApprove(IERC20 token, address spender, uint256 value) internal {
bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);
if (!_callOptionalReturnBool(token, approvalCall)) {
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));
_callOptionalReturn(token, approvalCall);
}
}
/**
* @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
* Revert on invalid signature.
*/
function safePermit(
IERC20Permit token,
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) internal {
uint256 nonceBefore = token.nonces(owner);
token.permit(owner, spender, value, deadline, v, r, s);
uint256 nonceAfter = token.nonces(owner);
require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*
* This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
*/
function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
// and not revert is the subcall reverts.
(bool success, bytes memory returndata) = address(token).call(data);
return
success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token));
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
*
* Furthermore, `isContract` will also return true if the target contract within
* the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
* which only has an effect at the end of a transaction.
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
* the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
*
* _Available since v4.8._
*/
function verifyCallResultFromTarget(
address target,
bool success,
bytes memory returndata,
string memory errorMessage
) internal view returns (bytes memory) {
if (success) {
if (returndata.length == 0) {
// only check isContract if the call was successful and the return data is empty
// otherwise we already know that it was a contract
require(isContract(target), "Address: call to non-contract");
}
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
/**
* @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason or using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
function _revert(bytes memory returndata, string memory errorMessage) private pure {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
/// @solidity memory-safe-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
pragma abicoder v2;
interface IRelationship {
// Invitee is the address of the person being invited
struct Invitee {
address invitee;
uint256 timestamp;
}
// User is the address of the person who is inviting
struct User {
Invitee[] inviteeList;
address inviter;
bytes32 code;
mapping(address => uint256) lengths;
}
function binding(bytes32 c) external;
function isInvited(address player) external view returns (bool);
function getInviteeList(address player) external view returns (Invitee[] memory);
function getParent(address player) external view returns (address);
function getInviteCode() external view returns (bytes32);
function getPlayerByCode(bytes32 code) external view returns (address);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.8.18;
import {ReentrancyGuard} from "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import {Relationship} from "./utils/Relationship.sol";
import {SafeERC20, IERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
contract StakeSpacePi is ReentrancyGuard, Relationship {
using SafeERC20 for IERC20;
struct Pool {
uint256 apr; // pool apr
uint256 lockSeconds; // pool lock seconds
uint256 amount; // pool stake amount
}
struct UserInfo {
uint256 amount; // user deposit amount
uint256 accReward; // user accumulate reward
uint256 rewardDebt; // user reward debt
uint256 enterTime; // user enter timestamp
uint256 billedSeconds; // user billed seconds
}
Pool[] public pools; // stake pools
IERC20 public token; // using token
uint256 public accDeposit; // accumulate all deposit
uint256 public accReward; // accumulate all reward
uint256 public constant inviteRewardRate = 10; // invite reward rate
mapping(address => mapping(uint256 => UserInfo)) public userInfo; // user info
mapping(address => uint256) public inviteReward; // invite reward amount
event Deposit(address indexed user, uint256 indexed pid, uint256 indexed amount);
event Withdraw(address indexed user, uint256 indexed pid, uint256 indexed amount);
event InviterReward(address indexed user, uint256 indexed pid, uint256 indexed amount);
event Reward(address indexed user, uint256 indexed pid, uint256 indexed amount);
event AddPool(uint256 indexed apr, uint256 indexed locked, uint256 indexed pid);
event SetPool(uint256 indexed apr, uint256 indexed locked, uint256 indexed pid);
constructor(IERC20 _token,uint256 end)Relationship(end){
token = _token;
}
modifier onlyUnLock(uint256 pid, address _sender){
Pool memory pool = pools[pid];
UserInfo memory user = userInfo[_sender][pid];
require(block.timestamp >= pool.lockSeconds + user.enterTime, "onlyUnLock: locked");
_;
}
modifier onlyNotDeposit() {
require(accDeposit == 0, "onlyNotDeposit: only not deposit");
_;
}
modifier onlyInvited(address _sender){
require(getParent(_sender) != address(0), "onlyInvited:only invited");
_;
}
// @dev add a new stake pool
function addPool(uint256 apr,uint256 locked) external onlyOwner{
require(apr > 5, "setPool: apr must > 5");
require(apr < 500, "setPool: apr must < 500");
require(locked > 0, "setPool: locked must > 0");
pools.push(Pool(apr, locked, 0));
emit AddPool(apr, locked, pools.length - 1);
}
// @dev total pools length
function poolLength() external view returns (uint256) {
return pools.length;
}
// @dev modify pool apr and lock time
function setPool(uint256 pid, uint256 apr, uint256 locked) external onlyOwner onlyNotDeposit{
require(apr > 5, "setPool: apr must > 5");
require(apr < 500, "setPool: apr must < 500");
require(locked > 0, "setPool: locked must > 0");
pools[pid].apr = apr;
pools[pid].lockSeconds = locked;
emit SetPool(apr, locked, pid);
}
// @dev get user pending reward
function pending(uint256 pid, address play) public view returns (uint256){
uint256 time = block.timestamp;
Pool memory pool = pools[pid];
UserInfo memory user = userInfo[play][pid];
if (user.amount == 0) return 0;
// reward formula = (amount * apr * delta elapsed time) + billing unclaimed
uint256 perSecond = user.amount * pool.apr * 1e18 / 365 days / 100;
if (time >= pool.lockSeconds + user.enterTime) {
if (user.billedSeconds >= pool.lockSeconds) return 0;
return (perSecond * (pool.lockSeconds - user.billedSeconds) / 1e18)+user.rewardDebt;
}
return (perSecond*(time- user.enterTime-user.billedSeconds) / 1e18)+user.rewardDebt;
}
// @dev deposit token can repeat, will settle the previous deposit
// @dev only invited can deposit
function deposit(uint256 pid, uint256 amount) external nonReentrant onlyInvited(msg.sender) inDuration {
require(amount > 0, "deposit: amount must > 0");
Pool storage pool = pools[pid];
UserInfo storage user = userInfo[msg.sender][pid];
token.safeTransferFrom(msg.sender, address(this), amount);
uint256 reward = pending(pid, msg.sender);
uint256 currentBlock = block.timestamp;
// if user first deposit, set enter time
if (user.enterTime == 0) {
user.enterTime = block.timestamp;
}
// if lock-up time period is over, reset enter time
if (currentBlock > user.enterTime+ pool.lockSeconds) {
if (reward > 0) revert("deposit: reward claim first");
user.enterTime = block.timestamp;
}
// if user has deposit, settle the previous deposit
if (user.amount > 0) {
if (reward > 0) {
user.rewardDebt = reward;
user.billedSeconds = block.timestamp - user.enterTime;
}
}
// record user deposit amount
pool.amount = pool.amount + amount;
user.amount = user.amount + amount;
accDeposit = accDeposit + amount;
emit Deposit(msg.sender, pid, amount);
}
// @dev withdraw deposit token whether unlock
function withdraw(uint256 pid) external onlyUnLock(pid, msg.sender) {
UserInfo storage user = userInfo[msg.sender][pid];
Pool storage pool = pools[pid];
uint256 amount = user.amount;
uint256 reward = pending(pid, msg.sender);
require(user.amount >= 0, "withdraw: Principal is zero");
// If there is a reward, first receive the reward before receiving the deposit
if (reward > 0) claim(pid);
// reset record
user.amount = 0;
user.enterTime = 0;
user.billedSeconds = 0;
accDeposit = accDeposit - amount;
pool.amount = pool.amount - amount;
// withdraw deposit amount
token.safeTransfer(msg.sender, amount);
emit Withdraw(msg.sender, pid, amount);
}
// @dev claim interest, not locking withdraw
// @dev inviter will get setting percent of the interest
function claim(uint256 pid) public nonReentrant{
UserInfo storage user = userInfo[msg.sender][pid];
Pool memory pool = pools[pid];
uint256 reward = pending(pid, msg.sender);
require(reward > 0, "claim: interest is zero");
// if not enough reward, will claim all remaining reward
if (token.balanceOf(address(this)) - accDeposit >= reward) {
address inviter = getParent(msg.sender);
// calc inviter reward
uint256 userInviteReward = reward * inviteRewardRate / 100;
// calc user reward
uint256 userReward = reward - userInviteReward;
// transfer reward
token.safeTransfer(inviter, userInviteReward);
token.safeTransfer(msg.sender, userReward);
user.accReward = user.accReward + userReward;
if ((block.timestamp - user.enterTime) >= pool.lockSeconds) {
// lock-up time period ends, set to lock seconds
user.billedSeconds = pool.lockSeconds;
} else {
// If not finished, calculate the elapsed time from the start
user.billedSeconds = block.timestamp - user.enterTime;
}
// record info
user.rewardDebt = 0;
accReward = accReward + reward;
inviteReward[inviter] = inviteReward[inviter] + userInviteReward;
emit InviterReward(inviter, pid, userInviteReward);
emit Reward(msg.sender, pid, userReward);
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.8.18;
import "@openzeppelin/contracts/access/Ownable.sol";
import "../interfaces/IRelationship.sol";
/* @title Relationship
* @author [email protected]
* @dev This contract is used to manage the invitation relationship.
*
* @rules can't invite someone who has already invited you
* @rules can't invite someone who has already been invited
* @rules maximum of invitees is limited by gas
*/
contract Relationship is Ownable,IRelationship {
// @dev default code
bytes32 public constant defaultCode = keccak256("space0");
// @dev start time
uint256 public beginsTime;
// @dev end time
uint256 public endsTime;
// User is the address of the person who is invited
mapping(address => User) private _relations;
// code used to invite
mapping(bytes32 => address) public codeUsed;
event Binding(address indexed inviter, address indexed invitee, bytes32 code);
constructor(uint256 ends) {
beginsTime = block.timestamp;
endsTime = ends;
_relations[msg.sender].code = defaultCode;
_relations[msg.sender].inviter = msg.sender;
codeUsed[defaultCode] = msg.sender;
}
modifier inDuration {
require(block.timestamp < endsTime, "not in time");
_;
}
// @param inviter address of the person who is inviting
function binding(bytes32 c) external override inDuration {
address sender = msg.sender;
address inviter = codeUsed[c];
require(inviter != address(0), "code not found");
require(inviter != sender, "Not allow inviter by self");
// invitee address info
User storage self = _relations[sender];
// inviter address info
User storage parent = _relations[inviter];
require(parent.lengths[sender] == 0, "Can not accept child invitation");
require(self.inviter == address(0), "Already bond invite");
parent.inviteeList.push(Invitee(sender, block.timestamp));
parent.lengths[sender] = self.inviteeList.length;
self.inviter = inviter;
bytes32 code = _genCode(sender);
require(codeUsed[code] == address(0), "please try again");
self.code = code;
codeUsed[code] = sender;
emit Binding(inviter, sender, code);
}
// @param player address if not invited
function isInvited(address player) public view override returns (bool){
if (_relations[player].inviter != address(0)) return true;
return false;
}
// @param get player address invitee list
function getInviteeList(address player) external view override returns (Invitee[] memory){
return _relations[player].inviteeList;
}
// @param get player address inviter
function getParent(address player) public view override returns (address){
return _relations[player].inviter;
}
// @param get player address invitation code
function getInviteCode() external view override returns (bytes32){
return _relations[msg.sender].code;
}
// @param get player address by invitation code
function getPlayerByCode(bytes32 code) external view override returns (address){
return codeUsed[code];
}
function _genCode(address player) private view returns (bytes32 hash){
hash = keccak256(abi.encode(player, block.number));
return hash;
}
}