Contract Name:
GenesisRewardsPool
Contract Source Code:
// SPDX-License-Identifier: MIT
pragma solidity 0.6.12;
/**
* @dev Standard math utilities missing in the Solidity language.
*/
library Math {
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
/**
* @dev Returns the smallest of two numbers.
*/
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow, so we distribute
return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2);
}
}
/**
* @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 () internal {
_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 make it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
// On the first call to nonReentrant, _notEntered will be true
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
_;
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
}
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, 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 `sender` to `recipient` 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 sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b > a) return (false, 0);
return (true, a - b);
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b == 0) return (false, 0);
return (true, a / b);
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b == 0) return (false, 0);
return (true, a % b);
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a, "SafeMath: subtraction overflow");
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) return 0;
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: division by zero");
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: modulo by zero");
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
return a - b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryDiv}.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a % b;
}
}
/**
* @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
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 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");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(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?highblue=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 functionCall(target, data, "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");
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(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) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(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) {
require(isContract(target), "Address: delegate call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
// 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
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
/**
* @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 SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
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'
// solhint-disable-next-line max-line-length
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));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @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");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
interface IMultiRewardPool {
function reward() external view returns (address);
function multiRewardLength() external view returns (uint256);
function multiRewards() external view returns (address[] memory);
function deposit(uint256 _pid, uint256 _amount) external;
function withdraw(uint256 _pid, uint256 _amount) external;
function withdrawAll(uint256 _pid) external;
function harvestAllRewards() external;
function pendingReward(uint256 _pid, address _user)
external
view
returns (uint256);
function pendingMultiRewards(uint256 _pid, address _user)
external
view
returns (uint256[] memory);
function pendingAllRewards(address _user) external view returns (uint256);
function pendingAllMultiRewards(address _user)
external
view
returns (uint256[] memory);
function totalAllocPoint() external view returns (uint256);
function poolLength() external view returns (uint256);
function getPoolInfo(uint256 _pid)
external
view
returns (address _lp, uint256 _allocPoint);
function getRewardPerSecond() external view returns (uint256);
function getMultiRewardPerSecond() external view returns (uint256[] memory);
function updateRewardRate(uint256 _newRate) external;
}
// Note that this pool has no minter key.
contract GenesisRewardsPool is IMultiRewardPool, ReentrancyGuard {
using SafeMath for uint256;
using SafeERC20 for IERC20;
// governance
address public operator;
address public reserveFund;
// Info of each user.
struct UserInfo {
uint256 amount; // How many LP tokens the user has provided.
uint256 rewardDebt; // Reward debt. See explanation below.
uint256 lastDepositTime;
}
// Info of each pool.
struct PoolInfo {
IERC20 token; // Address of LP token contract.
uint256 allocPoint; // How many allocation points assigned to this pool. LIGHTs to distribute in the pool.
uint256 lastRewardTime; // Last time that LIGHTs distribution occurred.
uint256 _accRewardPerShare; // Accumulated LIGHTs per share, times 1e18. See below.
bool isStarted; // if lastRewardTime has passed
uint16 depositFeeBP; // Deposit fee in basis points
uint256 lockedTime;
}
IERC20 public blue;
IERC20 public green;
// Info of each pool.
PoolInfo[] public poolInfo;
// Info of each user that stakes LP tokens.
mapping(uint256 => mapping(address => UserInfo)) public userInfo;
// Total allocation points. Must be the sum of all allocation points in all pools.
uint256 private _totalAllocPoint;
// The time when blue mining starts.
uint256 public poolStartTime;
uint256[] public epochTotalRewards = [100000 ether, 75000 ether, 50000 ether, 25000 ether];
// Time when each epoch ends.
uint256[4] public epochEndTimes;
// Reward per second for each of 4 weeks (last item is equal to 0 - for sanity).
uint256[5] public epochRewardPerSeconds;
uint256 private constant REWARD_RATE_DENOMINATION = 100;
uint256 public constant REWARD_RATE_LIGHT = 800;
event Deposit(address indexed user, uint256 indexed pid, uint256 amount);
event Withdraw(address indexed user, uint256 indexed pid, uint256 amount);
event EmergencyWithdraw(
address indexed user,
uint256 indexed pid,
uint256 amount
);
event RewardPaid(
address indexed user,
uint256 greenAmt,
uint256 blueAmt
);
constructor(
address _green,
address _blue,
uint256 _poolStartTime,
address _reserveFund
) public {
require(block.timestamp < _poolStartTime, "late");
green = IERC20(_green);
blue = IERC20(_blue);
poolStartTime = _poolStartTime;
reserveFund = _reserveFund;
epochEndTimes[0] = poolStartTime + 7 days; // 1st week
epochEndTimes[1] = epochEndTimes[0] + 7 days; // 2nd week
epochEndTimes[2] = epochEndTimes[1] + 7 days; // 3rd week
epochEndTimes[3] = epochEndTimes[2] + 7 days; // 4th week
epochRewardPerSeconds[0] = epochTotalRewards[0].div(7 days);
epochRewardPerSeconds[1] = epochTotalRewards[1].div(7 days);
epochRewardPerSeconds[2] = epochTotalRewards[2].div(7 days);
epochRewardPerSeconds[3] = epochTotalRewards[3].div(7 days);
epochRewardPerSeconds[4] = 0;
operator = msg.sender;
}
modifier onlyOperator() {
require(
operator == msg.sender,
"GenesisRewardPool: caller is not the operator"
);
_;
}
function reward() external view override returns (address) {
return address(green);
}
function multiRewardLength() external view override returns (uint256) {
return 2;
}
function multiRewards()
external
view
override
returns (address[] memory _rewards)
{
_rewards = new address[](2);
_rewards[0] = address(green);
_rewards[1] = address(blue);
}
function totalAllocPoint() external view override returns (uint256) {
return _totalAllocPoint;
}
function poolLength() external view override returns (uint256) {
return poolInfo.length;
}
function getPoolInfo(uint256 _pid)
external
view
override
returns (address _lp, uint256 _allocPoint)
{
PoolInfo memory pool = poolInfo[_pid];
_lp = address(pool.token);
_allocPoint = pool.allocPoint;
}
function getRewardPerSecond() external view override returns (uint256) {
for (uint8 epochId = 0; epochId <= 3; ++epochId) {
if (block.timestamp <= epochEndTimes[epochId])
return epochRewardPerSeconds[epochId];
}
return 0;
}
function getMultiRewardPerSecond()
external
view
override
returns (uint256[] memory _rewardPerSecondArr)
{
_rewardPerSecondArr = new uint256[](2);
for (uint8 epochId = 0; epochId <= 3; ++epochId) {
if (block.timestamp <= epochEndTimes[epochId]) {
_rewardPerSecondArr[0] = epochRewardPerSeconds[epochId];
_rewardPerSecondArr[1] = _rewardPerSecondArr[0]
.mul(REWARD_RATE_LIGHT)
.div(REWARD_RATE_DENOMINATION);
return _rewardPerSecondArr;
}
}
}
function checkPoolDuplicate(IERC20 _token) internal view {
uint256 length = poolInfo.length;
for (uint256 pid = 0; pid < length; ++pid) {
require(
poolInfo[pid].token != _token,
"rewardPool: existing pool?"
);
}
}
function setReserveFund(address _reserveFund) external onlyOperator {
reserveFund = _reserveFund;
}
// Add a new token to the pool. Can only be called by the owner.
function add(
uint256 _allocPoint,
IERC20 _token,
uint16 _depositFeeBP,
uint256 _lastRewardTime,
uint256 _lockedTime
) public onlyOperator {
require(_depositFeeBP <= 1000, "too high fee"); // <= 10%
checkPoolDuplicate(_token);
massUpdatePools();
if (block.timestamp < poolStartTime) {
// chef is sleeping
if (_lastRewardTime == 0) {
_lastRewardTime = poolStartTime;
} else {
if (_lastRewardTime < poolStartTime) {
_lastRewardTime = poolStartTime;
}
}
} else {
// chef is cooking
if (_lastRewardTime == 0 || _lastRewardTime < block.timestamp) {
_lastRewardTime = block.timestamp;
}
}
bool _isStarted = (_lastRewardTime <= poolStartTime) ||
(_lastRewardTime <= block.timestamp);
poolInfo.push(
PoolInfo({
token: _token,
allocPoint: _allocPoint,
lastRewardTime: _lastRewardTime,
_accRewardPerShare: 0,
lockedTime: _lockedTime,
depositFeeBP : _depositFeeBP,
isStarted: _isStarted
})
);
if (_isStarted) {
_totalAllocPoint = _totalAllocPoint.add(_allocPoint);
}
}
// Update the given pool's blue allocation point. Can only be called by the owner.
function setPoolAllocation(uint256 _pid, uint256 _allocPoint, uint16 _depositFeeBP)
public
onlyOperator
{
require(_depositFeeBP <= 1000, "too high fee"); // <= 10%
massUpdatePools();
PoolInfo storage pool = poolInfo[_pid];
if (pool.isStarted) {
_totalAllocPoint = _totalAllocPoint.sub(pool.allocPoint).add(
_allocPoint
);
}
pool.allocPoint = _allocPoint;
pool.depositFeeBP = _depositFeeBP;
}
// Update the given pool's blue locked time. Can only be called by the owner.
function setPoolLockedTime(uint256 _pid, uint256 _lockedTime)
public
onlyOperator
{
massUpdatePools();
PoolInfo storage pool = poolInfo[_pid];
pool.lockedTime = _lockedTime;
}
// Return accumulate rewards over the given _fromTime to _toTime.
function getGeneratedReward(uint256 _fromTime, uint256 _toTime)
public
view
returns (uint256)
{
for (uint8 epochId = 4; epochId >= 1; --epochId) {
if (_toTime >= epochEndTimes[epochId - 1]) {
if (_fromTime >= epochEndTimes[epochId - 1]) {
return
_toTime.sub(_fromTime).mul(
epochRewardPerSeconds[epochId]
);
}
uint256 _generatedReward = _toTime
.sub(epochEndTimes[epochId - 1])
.mul(epochRewardPerSeconds[epochId]);
if (epochId == 1) {
return
_generatedReward.add(
epochEndTimes[0].sub(_fromTime).mul(
epochRewardPerSeconds[0]
)
);
}
for (epochId = epochId - 1; epochId >= 1; --epochId) {
if (_fromTime >= epochEndTimes[epochId - 1]) {
return
_generatedReward.add(
epochEndTimes[epochId].sub(_fromTime).mul(
epochRewardPerSeconds[epochId]
)
);
}
_generatedReward = _generatedReward.add(
epochEndTimes[epochId]
.sub(epochEndTimes[epochId - 1])
.mul(epochRewardPerSeconds[epochId])
);
}
return
_generatedReward.add(
epochEndTimes[0].sub(_fromTime).mul(
epochRewardPerSeconds[0]
)
);
}
}
return _toTime.sub(_fromTime).mul(epochRewardPerSeconds[0]);
}
// View function to see pending LIGHTs on frontend.
function pendingReward(uint256 _pid, address _user)
public
view
override
returns (uint256)
{
PoolInfo storage pool = poolInfo[_pid];
UserInfo storage user = userInfo[_pid][_user];
uint256 _accRewardPerShare = pool._accRewardPerShare;
uint256 tokenSupply = pool.token.balanceOf(address(this));
if (block.timestamp > pool.lastRewardTime && tokenSupply != 0) {
uint256 _generatedReward = getGeneratedReward(
pool.lastRewardTime,
block.timestamp
);
uint256 _greenReward = _generatedReward.mul(pool.allocPoint).div(
_totalAllocPoint
);
_accRewardPerShare = _accRewardPerShare.add(
_greenReward.mul(1e18).div(tokenSupply)
);
}
return user.amount.mul(_accRewardPerShare).div(1e18).sub(user.rewardDebt);
}
function pendingMultiRewards(uint256 _pid, address _user)
public
view
override
returns (uint256[] memory _pendingMultiRewardArr)
{
uint256 _greenReward = pendingReward(_pid, _user);
_pendingMultiRewardArr = new uint256[](2);
_pendingMultiRewardArr[0] = _greenReward;
_pendingMultiRewardArr[1] = _greenReward.mul(REWARD_RATE_LIGHT).div(
REWARD_RATE_DENOMINATION
);
}
function pendingAllRewards(address _user)
public
view
override
returns (uint256 _total)
{
uint256 length = poolInfo.length;
for (uint256 pid = 0; pid < length; ++pid) {
_total = _total.add(pendingReward(pid, _user));
}
}
function pendingAllMultiRewards(address _user)
external
view
override
returns (uint256[] memory _totalMultiRewardArr)
{
uint256 _greenTotalReward = pendingAllRewards(_user);
_totalMultiRewardArr = new uint256[](2);
_totalMultiRewardArr[0] = _greenTotalReward;
_totalMultiRewardArr[1] = _greenTotalReward.mul(REWARD_RATE_LIGHT).div(
REWARD_RATE_DENOMINATION
);
}
// Update reward variables for all pools. Be careful of gas spending!
function massUpdatePools() public {
uint256 length = poolInfo.length;
for (uint256 pid = 0; pid < length; ++pid) {
updatePool(pid);
}
}
// Update reward variables of the given pool to be up-to-date.
function updatePool(uint256 _pid) public {
PoolInfo storage pool = poolInfo[_pid];
if (block.timestamp <= pool.lastRewardTime) {
return;
}
uint256 tokenSupply = pool.token.balanceOf(address(this));
if (tokenSupply == 0) {
pool.lastRewardTime = block.timestamp;
return;
}
if (!pool.isStarted) {
pool.isStarted = true;
_totalAllocPoint = _totalAllocPoint.add(pool.allocPoint);
}
if (_totalAllocPoint > 0) {
uint256 _generatedReward = getGeneratedReward(
pool.lastRewardTime,
block.timestamp
);
uint256 _greenReward = _generatedReward.mul(pool.allocPoint).div(
_totalAllocPoint
);
pool._accRewardPerShare = pool._accRewardPerShare.add(
_greenReward.mul(1e18).div(tokenSupply)
);
}
pool.lastRewardTime = block.timestamp;
}
function unfrozenStakeTime(uint256 _pid, address _account)
public
view
returns (uint256)
{
return
Math.min(
userInfo[_pid][_account].lastDepositTime +
poolInfo[_pid].lockedTime,
epochEndTimes[3]
);
}
// Deposit LP tokens.
function deposit(uint256 _pid, uint256 _amount)
external
override
nonReentrant
{
PoolInfo storage pool = poolInfo[_pid];
UserInfo storage user = userInfo[_pid][msg.sender];
updatePool(_pid);
if (user.amount > 0) {
uint256 _pending = user
.amount
.mul(pool._accRewardPerShare)
.div(1e18)
.sub(user.rewardDebt);
if (_pending > 0) {
_claimReward(msg.sender, _pending);
}
}
if (_amount > 0) {
pool.token.safeTransferFrom(msg.sender, address(this), _amount);
if (pool.depositFeeBP > 0) {
uint256 _depositFee = _amount.mul(pool.depositFeeBP).div(10000);
pool.token.safeTransfer(reserveFund, _depositFee);
user.amount = user.amount.add(_amount).sub(_depositFee);
} else {
user.amount = user.amount.add(_amount);
}
}
user.rewardDebt = user.amount.mul(pool._accRewardPerShare).div(1e18);
user.lastDepositTime = block.timestamp;
emit Deposit(msg.sender, _pid, _amount);
}
function withdraw(uint256 _pid, uint256 _amount)
external
override
nonReentrant
{
_withdraw(msg.sender, _pid, _amount);
}
// Withdraw LP tokens.
function _withdraw(
address _account,
uint256 _pid,
uint256 _amount
) internal {
PoolInfo storage pool = poolInfo[_pid];
UserInfo storage user = userInfo[_pid][_account];
if (_amount > 0) {
require(user.amount >= _amount, "withdraw: not good");
require(
block.timestamp >= unfrozenStakeTime(_pid, msg.sender),
"GenesisRewardPool: locked"
);
}
updatePool(_pid);
uint256 _pending = user.amount.mul(pool._accRewardPerShare).div(1e18).sub(
user.rewardDebt
);
if (_pending > 0) {
_claimReward(_account, _pending);
}
if (_amount > 0) {
user.amount = user.amount.sub(_amount);
pool.token.safeTransfer(_account, _amount);
}
user.rewardDebt = user.amount.mul(pool._accRewardPerShare).div(1e18);
emit Withdraw(_account, _pid, _amount);
}
function withdrawAll(uint256 _pid) external override nonReentrant {
_withdraw(msg.sender, _pid, userInfo[_pid][msg.sender].amount);
}
function harvestAllRewards() external override nonReentrant {
uint256 length = poolInfo.length;
for (uint256 pid = 0; pid < length; ++pid) {
if (userInfo[pid][msg.sender].amount > 0) {
_withdraw(msg.sender, pid, 0);
}
}
}
// Withdraw without caring about rewards. EMERGENCY ONLY.
function emergencyWithdraw(uint256 _pid) external {
require(
block.timestamp >= unfrozenStakeTime(_pid, msg.sender),
"GenesisRewardPool: locked"
);
PoolInfo storage pool = poolInfo[_pid];
UserInfo storage user = userInfo[_pid][msg.sender];
uint256 _amount = user.amount;
user.amount = 0;
user.rewardDebt = 0;
pool.token.safeTransfer(msg.sender, _amount);
emit EmergencyWithdraw(msg.sender, _pid, _amount);
}
function _claimReward(address _account, uint256 _greenAmt) internal {
uint256 _blueAmt = _greenAmt.mul(REWARD_RATE_LIGHT).div(
REWARD_RATE_DENOMINATION
);
_safeTokenTransfer(green, _account, _greenAmt);
_safeTokenTransfer(blue, _account, _blueAmt);
emit RewardPaid(_account, _greenAmt, _blueAmt);
}
// Safe blue transfer function, just in case if rounding error causes pool to not have enough LIGHTs.
function _safeTokenTransfer(
IERC20 _token,
address _to,
uint256 _amount
) internal {
uint256 _tokenBal = _token.balanceOf(address(this));
if (_tokenBal > 0) {
if (_amount > _tokenBal) {
_token.safeTransfer(_to, _tokenBal);
} else {
_token.safeTransfer(_to, _amount);
}
}
}
function updateRewardRate(uint256) external override {
revert("Not support");
}
function setOperator(address _operator) external onlyOperator {
operator = _operator;
}
function governanceRecoverUnsupported(
IERC20 _token,
uint256 amount,
address to
) external onlyOperator {
if (block.timestamp < epochEndTimes[3] + 90 days) {
// do not allow to drain token if less than 90 days after farming
require(
_token != green && _token != blue,
"reward"
);
uint256 length = poolInfo.length;
for (uint256 pid = 0; pid < length; ++pid) {
PoolInfo storage pool = poolInfo[pid];
require(_token != pool.token, "!pool.token");
}
}
_token.safeTransfer(to, amount);
}
}