Contract Name:
MinterUpgradeable
Contract Source Code:
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)
pragma solidity ^0.8.0;
import "../utils/ContextUpgradeable.sol";
import "../proxy/utils/Initializable.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 OwnableUpgradeable is Initializable, ContextUpgradeable {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
function __Ownable_init() internal onlyInitializing {
__Ownable_init_unchained();
}
function __Ownable_init_unchained() internal onlyInitializing {
_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);
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[49] private __gap;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (proxy/utils/Initializable.sol)
pragma solidity ^0.8.2;
import "../../utils/AddressUpgradeable.sol";
/**
* @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
* behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
* external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
* function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
*
* The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
* reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
* case an upgrade adds a module that needs to be initialized.
*
* For example:
*
* [.hljs-theme-light.nopadding]
* ```
* contract MyToken is ERC20Upgradeable {
* function initialize() initializer public {
* __ERC20_init("MyToken", "MTK");
* }
* }
* contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
* function initializeV2() reinitializer(2) public {
* __ERC20Permit_init("MyToken");
* }
* }
* ```
*
* TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
* possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
*
* CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
* that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
*
* [CAUTION]
* ====
* Avoid leaving a contract uninitialized.
*
* An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
* contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
* the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
*
* [.hljs-theme-light.nopadding]
* ```
* /// @custom:oz-upgrades-unsafe-allow constructor
* constructor() {
* _disableInitializers();
* }
* ```
* ====
*/
abstract contract Initializable {
/**
* @dev Indicates that the contract has been initialized.
* @custom:oz-retyped-from bool
*/
uint8 private _initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private _initializing;
/**
* @dev Triggered when the contract has been initialized or reinitialized.
*/
event Initialized(uint8 version);
/**
* @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
* `onlyInitializing` functions can be used to initialize parent contracts.
*
* Similar to `reinitializer(1)`, except that functions marked with `initializer` can be nested in the context of a
* constructor.
*
* Emits an {Initialized} event.
*/
modifier initializer() {
bool isTopLevelCall = !_initializing;
require(
(isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
"Initializable: contract is already initialized"
);
_initialized = 1;
if (isTopLevelCall) {
_initializing = true;
}
_;
if (isTopLevelCall) {
_initializing = false;
emit Initialized(1);
}
}
/**
* @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
* contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
* used to initialize parent contracts.
*
* A reinitializer may be used after the original initialization step. This is essential to configure modules that
* are added through upgrades and that require initialization.
*
* When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
* cannot be nested. If one is invoked in the context of another, execution will revert.
*
* Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
* a contract, executing them in the right order is up to the developer or operator.
*
* WARNING: setting the version to 255 will prevent any future reinitialization.
*
* Emits an {Initialized} event.
*/
modifier reinitializer(uint8 version) {
require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
_initialized = version;
_initializing = true;
_;
_initializing = false;
emit Initialized(version);
}
/**
* @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
* {initializer} and {reinitializer} modifiers, directly or indirectly.
*/
modifier onlyInitializing() {
require(_initializing, "Initializable: contract is not initializing");
_;
}
/**
* @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
* Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
* to any version. It is recommended to use this to lock implementation contracts that are designed to be called
* through proxies.
*
* Emits an {Initialized} event the first time it is successfully executed.
*/
function _disableInitializers() internal virtual {
require(!_initializing, "Initializable: contract is initializing");
if (_initialized < type(uint8).max) {
_initialized = type(uint8).max;
emit Initialized(type(uint8).max);
}
}
/**
* @dev Internal function that returns the initialized version. Returns `_initialized`
*/
function _getInitializedVersion() internal view returns (uint8) {
return _initialized;
}
/**
* @dev Internal function that returns the initialized version. Returns `_initializing`
*/
function _isInitializing() internal view returns (bool) {
return _initializing;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library AddressUpgradeable {
/**
* @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
* ====
*
* [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://diligence.consensys.net/posts/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/v0.5.11/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 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;
import "../proxy/utils/Initializable.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 ContextUpgradeable is Initializable {
function __Context_init() internal onlyInitializing {
}
function __Context_init_unchained() internal onlyInitializing {
}
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[50] private __gap;
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;
interface IMasterchef {
struct PoolInfo {
uint256 accRewardPerShare;
uint256 accRewardPerShareExtra;
uint256 lastRewardTime;
}
function setDistributionRate(uint256 amount) external;
function setDistributionRateExtra(uint256 amount) external;
function updatePool() external returns (PoolInfo memory pool);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;
interface IMinter {
function update_period() external returns (uint);
function check() external view returns(bool);
function period() external view returns(uint);
function active_period() external view returns(uint);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;
interface IRewardsDistributor {
function checkpoint_token() external;
function voting_escrow() external view returns(address);
function checkpoint_total_supply() external;
function claimable(uint _tokenId) external view returns (uint);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;
interface ISWPx {
function initialMint(address _recipient) external;
function totalSupply() external view returns (uint);
function balanceOf(address) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address, uint) external returns (bool);
function transferFrom(address,address,uint) external returns (bool);
function mint(address, uint) external returns (bool);
function minter() external returns (address);
function setMinter(address) external;
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;
interface IVoter {
function _ve() external view returns (address);
function gauges(address _pair) external view returns (address);
function isGauge(address _gauge) external view returns (bool);
function poolForGauge(address _gauge) external view returns (address);
function factory() external view returns (address);
function minter() external view returns(address);
function isWhitelisted(address token) external view returns (bool);
function notifyRewardAmount(uint amount) external;
function distributeAll() external;
function distributeFees(address[] memory _gauges) external;
function internal_bribes(address _gauge) external view returns (address);
function external_bribes(address _gauge) external view returns (address);
function usedWeights(uint id) external view returns(uint);
function lastVoted(uint id) external view returns(uint);
function poolVote(uint id, uint _index) external view returns(address _pair);
function votes(uint id, address _pool) external view returns(uint votes);
function poolVoteLength(uint tokenId) external view returns(uint);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;
interface IVotingEscrow {
struct Point {
int128 bias;
int128 slope; // # -dweight / dt
uint256 ts;
uint256 blk; // block
}
struct LockedBalance {
int128 amount;
uint start;
uint end;
}
function create_lock_for(uint _value, uint _lock_duration, address _to) external returns (uint);
function locked(uint id) external view returns(LockedBalance memory);
function tokenOfOwnerByIndex(address _owner, uint _tokenIndex) external view returns (uint);
function token() external view returns (address);
function team() external returns (address);
function epoch() external view returns (uint);
function point_history(uint loc) external view returns (Point memory);
function user_point_history(uint tokenId, uint loc) external view returns (Point memory);
function user_point_epoch(uint tokenId) external view returns (uint);
function ownerOf(uint) external view returns (address);
function isApprovedOrOwner(address, uint) external view returns (bool);
function transferFrom(address, address, uint) external;
function voted(uint) external view returns (bool);
function attachments(uint) external view returns (uint);
function voting(uint tokenId) external;
function abstain(uint tokenId) external;
function attach(uint tokenId) external;
function detach(uint tokenId) external;
function checkpoint() external;
function deposit_for(uint tokenId, uint value) external;
function balanceOfAtNFT(uint _tokenId, uint _block) external view returns (uint);
function balanceOfNFT(uint _id) external view returns (uint);
function balanceOf(address _owner) external view returns (uint);
function totalSupply() external view returns (uint);
function supply() external view returns (uint);
function decimals() external view returns(uint8);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;
library Constants {
uint256 internal constant EPOCH_LENGTH = 12 hours;//7 days;
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;
library Math {
function max(uint a, uint b) internal pure returns (uint) {
return a >= b ? a : b;
}
function min(uint a, uint b) internal pure returns (uint) {
return a < b ? a : b;
}
function sqrt(uint y) internal pure returns (uint z) {
if (y > 3) {
z = y;
uint x = y / 2 + 1;
while (x < z) {
z = x;
x = (y / x + x) / 2;
}
} else if (y != 0) {
z = 1;
}
}
function cbrt(uint256 n) internal pure returns (uint256) { unchecked {
uint256 x = 0;
for (uint256 y = 1 << 255; y > 0; y >>= 3) {
x <<= 1;
uint256 z = 3 * x * (x + 1) + 1;
if (n / y >= z) {
n -= y * z;
x += 1;
}
}
return x;
}}
}
// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity 0.8.13;
import "./libraries/Math.sol";
import "./libraries/Constants.sol";
import "./interfaces/IMinter.sol";
import "./interfaces/IRewardsDistributor.sol";
import "./interfaces/ISWPx.sol";
import "./interfaces/IVoter.sol";
import "./interfaces/IVotingEscrow.sol";
import "./interfaces/IMasterchef.sol";
import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
// codifies the minting rules as per ve(3,3), abstracted from the token to support any token that allows minting
contract MinterUpgradeable is IMinter, OwnableUpgradeable {
bool public isFirstMint;
uint public EMISSION;
uint public TAIL_EMISSION;
uint public REBASE_MAX;
uint public REBASE_MIN;
uint public REBASE_STEP;
uint public currentRebaseRate;
uint public constant PRECISION = 1000;
uint public teamRate;
uint public referralRate;
uint public surplusTokens;
uint public constant MAX_TEAM_RATE = 50; // 5%
uint public constant MAX_REFERRAL_RATE = 100; // 10%
uint public weekly; // represents a starting weekly emission of 2.0M SWPx (SWPx has 18 decimals)
uint public active_period;
bool public isEpochsStarted;
uint public weekNumber;
uint public constant LOCK = 86400 * 7 * 52 * 2;
address public team;
address public pendingTeam;
address public referralAddress;
ISWPx public _swpx;
IVoter public _voter;
IVotingEscrow public _ve;
IRewardsDistributor public _rewards_distributor;
IMasterchef public masterchef;
event Mint(address indexed sender, uint weekly, uint circulating_supply, uint circulating_emission);
event EpochChanged(uint256 epochStartTime);
constructor() {}
function initialize(
address __voter, // the voting & distribution system
address __ve, // the ve(3,3) system that will be locked into
address __rewards_distributor, // the distribution system that ensures users aren't diluted
address _masterchef,
address _initialMintRecipient
) initializer public {
__Ownable_init();
team = msg.sender;
teamRate = 30; // 300 bps = 3%
referralRate = 50;
EMISSION = 990;
TAIL_EMISSION = 2;
REBASE_MAX = 300;
REBASE_MIN = 100;
REBASE_STEP = 10;
_swpx = ISWPx(IVotingEscrow(__ve).token());
_voter = IVoter(__voter);
_ve = IVotingEscrow(__ve);
_rewards_distributor = IRewardsDistributor(__rewards_distributor);
masterchef = IMasterchef(_masterchef);
_swpx.initialMint(_initialMintRecipient);
weekly = 2_000_000 * 1e18; // represents a starting weekly emission of 2M SWPx (SWPx has 18 decimals)
isFirstMint = true;
}
function startEpoch() external onlyOwner {
require(!isEpochsStarted, "Already started");
active_period = (block.timestamp / Constants.EPOCH_LENGTH) * Constants.EPOCH_LENGTH;
isEpochsStarted = true;
emit EpochChanged(active_period);
}
function setTeam(address _team) external {
require(msg.sender == team, "not team");
pendingTeam = _team;
}
function acceptTeam() external {
require(msg.sender == pendingTeam, "not pending team");
team = pendingTeam;
}
function setVoter(address __voter) external {
require(__voter != address(0));
require(msg.sender == team, "not team");
_voter = IVoter(__voter);
}
function setTeamRate(uint _teamRate) external {
require(msg.sender == team, "not team");
require(_teamRate <= MAX_TEAM_RATE, "rate too high");
teamRate = _teamRate;
}
function setEmission(uint _emission) external {
require(msg.sender == team, "not team");
require(_emission <= PRECISION * 150 / 100, "rate too high");
EMISSION = _emission;
}
function setReferralRate(uint _referralRate) external {
require(msg.sender == team, "not team");
require(_referralRate <= MAX_REFERRAL_RATE, "rate too high");
referralRate = _referralRate;
}
function setReferralAddress(address _referralAddress) external {
require(_referralAddress != address(0));
require(msg.sender == team, "not team");
referralAddress = _referralAddress;
}
// calculate circulating supply as total token supply - locked supply
function circulating_supply() public view returns (uint) {
return _swpx.totalSupply() - _swpx.balanceOf(address(_ve));
}
// emission calculation is 1% of available supply to mint adjusted by circulating / total supply
function calculate_emission() public view returns (uint) {
return (weekly * EMISSION) / PRECISION;
}
function circulating_emission() public view returns (uint) {
return (circulating_supply() * TAIL_EMISSION) / PRECISION;
}
// calculate inflation and adjust ve balances accordingly
function calculate_rebase(uint _weeklyMint) public view returns (uint, uint) {
if (weekNumber == 0) {
return (0, 0);
}
uint256 _currentRebaseRate = currentRebaseRate;
if (_currentRebaseRate == 0) {
_currentRebaseRate = REBASE_MIN;
} else if (_currentRebaseRate < REBASE_MAX) {
_currentRebaseRate += REBASE_STEP;
}
uint256 rebaseAmount = _weeklyMint * _currentRebaseRate / PRECISION;
return (_currentRebaseRate, rebaseAmount);
}
// update period can only be called once per cycle (1 week)
function update_period() external returns (uint) {
uint _period = active_period;
if (block.timestamp >= _period + Constants.EPOCH_LENGTH && isEpochsStarted) { // only trigger if new week
_period = (block.timestamp / Constants.EPOCH_LENGTH) * Constants.EPOCH_LENGTH;
active_period = _period;
if(!isFirstMint){
weekly = calculate_emission();
} else {
isFirstMint = false;
}
uint _rebase;
(currentRebaseRate, _rebase) = calculate_rebase(weekly);
uint _teamEmissions = weekly * teamRate / PRECISION;
uint _referralEmissions = weekly * referralRate / PRECISION;
uint _required = weekly + surplusTokens;
uint _gauge = weekly + surplusTokens - _rebase - _teamEmissions - _referralEmissions;
delete surplusTokens;
uint _balanceOf = _swpx.balanceOf(address(this));
if (_balanceOf < _required) {
_swpx.mint(address(this), _required - _balanceOf);
}
if (weekNumber < 12) {
masterchef.setDistributionRateExtra(_teamEmissions);
require(_swpx.transfer(address(masterchef), _teamEmissions));
} else {
require(_swpx.transfer(team, _teamEmissions));
}
if(referralAddress != address(0)) require(_swpx.transfer(referralAddress, _referralEmissions));
require(_swpx.transfer(address(_rewards_distributor), _rebase));
_rewards_distributor.checkpoint_token(); // checkpoint token balance that was just minted in rewards distributor
_rewards_distributor.checkpoint_total_supply(); // checkpoint supply
require(_swpx.approve(address(_voter), _gauge));
_voter.notifyRewardAmount(_gauge);
emit EpochChanged(_period);
emit Mint(msg.sender, weekly, circulating_supply(), circulating_emission());
++weekNumber;
}
return _period;
}
function returnSurplusTokens(uint256 amount) external {
require(msg.sender == referralAddress, "!referralAddress");
surplusTokens += amount;
require(_swpx.transferFrom(msg.sender, address(this), amount));
}
function check() external view returns(bool){
uint _period = active_period;
return (block.timestamp >= _period + Constants.EPOCH_LENGTH && isEpochsStarted);
}
function period() external view returns(uint){
return(block.timestamp / Constants.EPOCH_LENGTH) * Constants.EPOCH_LENGTH;
}
function setRewardDistributor(address _rewardDistro) external {
require(msg.sender == team);
_rewards_distributor = IRewardsDistributor(_rewardDistro);
}
function setMint(address minter) external {
_swpx.setMinter(minter);
}
}