GLMR Price: $0.51 (-2.30%)
Gas: 151 GWei

Contract Diff Checker

Contract Name:
FlareDistributor

Contract Source Code:

File 1 of 1 : FlareDistributor

// Sources flattened with hardhat v2.7.0 https://hardhat.org

// File contracts/flare/FlareDistributor.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (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;
}
}


/**
 * @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 Returns the address of the current owner.
     */
function owner() public view virtual returns (address) {
return _owner;
}

/**
 * @dev Throws if called by any account other than the owner.
     */
modifier onlyOwner() {
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 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() {
// 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 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;
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");

(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 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");

(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");

(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");

(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}

/**
 * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason 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 {
// 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

assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}


interface IBoringERC20 {
function mint(address to, uint256 amount) external;

function totalSupply() external view returns (uint256);

function balanceOf(address account) external view returns (uint256);

function allowance(address owner, address spender)
external
view
returns (uint256);

function approve(address spender, uint256 amount) external returns (bool);

event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);

/// @notice EIP 2612
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
}


interface IRewarder {
function onFlareReward(
uint256 pid,
address user,
uint256 newLpAmount
) external;

function pendingTokens(uint256 pid, address user)
external
view
returns (uint256 pending);

function rewardToken() external view returns (IBoringERC20);

function poolRewardsPerSec(uint256 pid) external view returns (uint256);
}


// solhint-disable avoid-low-level-calls
library BoringERC20 {
bytes4 private constant SIG_SYMBOL = 0x95d89b41; // symbol()
bytes4 private constant SIG_NAME = 0x06fdde03; // name()
bytes4 private constant SIG_DECIMALS = 0x313ce567; // decimals()
bytes4 private constant SIG_TRANSFER = 0xa9059cbb; // transfer(address,uint256)
bytes4 private constant SIG_TRANSFER_FROM = 0x23b872dd; // transferFrom(address,address,uint256)

function returnDataToString(bytes memory data)
internal
pure
returns (string memory)
{
if (data.length >= 64) {
return abi.decode(data, (string));
} else if (data.length == 32) {
uint8 i = 0;
while (i < 32 && data[i] != 0) {
i++;
}
bytes memory bytesArray = new bytes(i);
for (i = 0; i < 32 && data[i] != 0; i++) {
bytesArray[i] = data[i];
}
return string(bytesArray);
} else {
return "???";
}
}

/// @notice Provides a safe ERC20.symbol version which returns '???' as fallback string.
/// @param token The address of the ERC-20 token contract.
/// @return (string) Token symbol.
function safeSymbol(IBoringERC20 token)
internal
view
returns (string memory)
{
(bool success, bytes memory data) = address(token).staticcall(
abi.encodeWithSelector(SIG_SYMBOL)
);
return success ? returnDataToString(data) : "???";
}

/// @notice Provides a safe ERC20.name version which returns '???' as fallback string.
/// @param token The address of the ERC-20 token contract.
/// @return (string) Token name.
function safeName(IBoringERC20 token)
internal
view
returns (string memory)
{
(bool success, bytes memory data) = address(token).staticcall(
abi.encodeWithSelector(SIG_NAME)
);
return success ? returnDataToString(data) : "???";
}

/// @notice Provides a safe ERC20.decimals version which returns '18' as fallback value.
/// @param token The address of the ERC-20 token contract.
/// @return (uint8) Token decimals.
function safeDecimals(IBoringERC20 token) internal view returns (uint8) {
(bool success, bytes memory data) = address(token).staticcall(
abi.encodeWithSelector(SIG_DECIMALS)
);
return success && data.length == 32 ? abi.decode(data, (uint8)) : 18;
}

/// @notice Provides a safe ERC20.transfer version for different ERC-20 implementations.
/// Reverts on a failed transfer.
/// @param token The address of the ERC-20 token.
/// @param to Transfer tokens to.
/// @param amount The token amount.
function safeTransfer(
IBoringERC20 token,
address to,
uint256 amount
) internal {
(bool success, bytes memory data) = address(token).call(
abi.encodeWithSelector(SIG_TRANSFER, to, amount)
);
require(
success && (data.length == 0 || abi.decode(data, (bool))),
"BoringERC20: Transfer failed"
);
}

/// @notice Provides a safe ERC20.transferFrom version for different ERC-20 implementations.
/// Reverts on a failed transfer.
/// @param token The address of the ERC-20 token.
/// @param from Transfer tokens from.
/// @param to Transfer tokens to.
/// @param amount The token amount.
function safeTransferFrom(
IBoringERC20 token,
address from,
address to,
uint256 amount
) internal {
(bool success, bytes memory data) = address(token).call(
abi.encodeWithSelector(SIG_TRANSFER_FROM, from, to, amount)
);
require(
success && (data.length == 0 || abi.decode(data, (bool))),
"BoringERC20: TransferFrom failed"
);
}
}

contract FlareDistributor is Ownable, ReentrancyGuard {
using BoringERC20 for IBoringERC20;

// Info of each user.
struct UserInfo {
uint256 amount; // How many LP tokens the user has provided.
uint256 rewardDebt; // Reward debt. See explanation below.
uint256 rewardLockedUp; // Reward locked up.
uint256 nextHarvestUntil; // When can the user harvest again.
}

// Info of each pool.
struct PoolInfo {
IBoringERC20 lpToken; // Address of LP token contract.
uint256 allocPoint; // How many allocation points assigned to this pool. FLARE to distribute per block.
uint256 lastRewardTimestamp; // Last block number that FLARE distribution occurs.
uint256 accFlarePerShare; // Accumulated FLARE per share, times 1e18. See below.
uint16 depositFeeBP; // Deposit fee in basis points
uint256 harvestInterval; // Harvest interval in seconds
uint256 totalLp; // Total token in Pool
IRewarder[] rewarders; // Array of rewarder contract for pools with incentives
}

IBoringERC20 public flare;

// FLARE tokens created per second
uint256 public flarePerSec;

// Max harvest interval: 14 days
uint256 public constant MAXIMUM_HARVEST_INTERVAL = 14 days;

// Maximum deposit fee rate: 10%
uint16 public constant MAXIMUM_DEPOSIT_FEE_RATE = 1000;

// 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 public totalAllocPoint = 0;

// The timestamp when FLARE mining starts.
uint256 public startTimestamp;

// Total locked up rewards
uint256 public totalLockedUpRewards;

// Total FLARE in FLARE Pools (can be multiple pools)
uint256 public totalFlareInPools = 0;

// Team address.
address public teamAddress;

// Treasury address.
address public treasuryAddress;

// Investor address.
address public investorAddress;

// Percentage of pool rewards that goto the team.
uint256 public teamPercent;

// Percentage of pool rewards that goes to the treasury.
uint256 public treasuryPercent;

// Percentage of pool rewards that goes to the investor.
uint256 public investorPercent;

// The precision factor
uint256 private immutable ACC_TOKEN_PRECISION = 1e12;

modifier validatePoolByPid(uint256 _pid) {
require(_pid < poolInfo.length, "Pool does not exist");
_;
}

event Add(
uint256 indexed pid,
uint256 allocPoint,
IBoringERC20 indexed lpToken,
uint16 depositFeeBP,
uint256 harvestInterval,
IRewarder[] indexed rewarders
);

event Set(
uint256 indexed pid,
uint256 allocPoint,
uint16 depositFeeBP,
uint256 harvestInterval,
IRewarder[] indexed rewarders
);

event UpdatePool(
uint256 indexed pid,
uint256 lastRewardTimestamp,
uint256 lpSupply,
uint256 accFlarePerShare
);

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 EmissionRateUpdated(
address indexed caller,
uint256 previousValue,
uint256 newValue
);

event RewardLockedUp(
address indexed user,
uint256 indexed pid,
uint256 amountLockedUp
);

event AllocPointsUpdated(
address indexed caller,
uint256 previousAmount,
uint256 newAmount
);

event SetTeamAddress(
address indexed oldAddress,
address indexed newAddress
);

event SetTreasuryAddress(
address indexed oldAddress,
address indexed newAddress
);

event SetInvestorAddress(
address indexed oldAddress,
address indexed newAddress
);

event SetTeamPercent(uint256 oldPercent, uint256 newPercent);

event SetTreasuryPercent(uint256 oldPercent, uint256 newPercent);

event SetInvestorPercent(uint256 oldPercent, uint256 newPercent);

constructor(
IBoringERC20 _flare,
uint256 _flarePerSec,
address _teamAddress,
address _treasuryAddress,
address _investorAddress,
uint256 _teamPercent,
uint256 _treasuryPercent,
uint256 _investorPercent
) {
require(
_teamPercent <= 1000,
"constructor: invalid team percent value"
);
require(
_treasuryPercent <= 1000,
"constructor: invalid treasury percent value"
);
require(
_investorPercent <= 1000,
"constructor: invalid investor percent value"
);
require(
_teamPercent + _treasuryPercent + _investorPercent <= 1000,
"constructor: total percent over max"
);

//StartBlock always many years later from contract const ruct, will be set later in StartFarming function
startTimestamp = block.timestamp + (60 * 60 * 24 * 365);

flare = _flare;
flarePerSec = _flarePerSec;

teamAddress = _teamAddress;
treasuryAddress = _treasuryAddress;
investorAddress = _investorAddress;

teamPercent = _teamPercent;
treasuryPercent = _treasuryPercent;
investorPercent = _investorPercent;
}

// Set farming start, can call only once
function startFarming() public onlyOwner {
require(
block.timestamp < startTimestamp,
"start farming: farm started already"
);

uint256 length = poolInfo.length;
for (uint256 pid = 0; pid < length; ++pid) {
PoolInfo storage pool = poolInfo[pid];
pool.lastRewardTimestamp = block.timestamp;
}

startTimestamp = block.timestamp;
}

function poolLength() external view returns (uint256) {
return poolInfo.length;
}

// Add a new lp to the pool. Can only be called by the owner.
// Can add multiple pool with same lp token without messing up rewards, because each pool's balance is tracked using its own totalLp
function add(
uint256 _allocPoint,
IBoringERC20 _lpToken,
uint16 _depositFeeBP,
uint256 _harvestInterval,
IRewarder[] calldata _rewarders
) public onlyOwner {
require(_rewarders.length <= 10, "add: too many rewarders");
require(
_depositFeeBP <= MAXIMUM_DEPOSIT_FEE_RATE,
"add: deposit fee too high"
);
require(
_harvestInterval <= MAXIMUM_HARVEST_INTERVAL,
"add: invalid harvest interval"
);
require(
Address.isContract(address(_lpToken)),
"add: LP token must be a valid contract"
);

for (
uint256 rewarderId = 0;
rewarderId < _rewarders.length;
++rewarderId
) {
require(
Address.isContract(address(_rewarders[rewarderId])),
"add: rewarder must be contract"
);
}

_massUpdatePools();

uint256 lastRewardTimestamp = block.timestamp > startTimestamp
? block.timestamp
: startTimestamp;

totalAllocPoint += _allocPoint;

poolInfo.push(
PoolInfo({
lpToken: _lpToken,
allocPoint: _allocPoint,
lastRewardTimestamp: lastRewardTimestamp,
accFlarePerShare: 0,
depositFeeBP: _depositFeeBP,
harvestInterval: _harvestInterval,
totalLp: 0,
rewarders: _rewarders
})
);

emit Add(
poolInfo.length - 1,
_allocPoint,
_lpToken,
_depositFeeBP,
_harvestInterval,
_rewarders
);
}

// Update the given pool's FLARE allocation point and deposit fee. Can only be called by the owner.
function set(
uint256 _pid,
uint256 _allocPoint,
uint16 _depositFeeBP,
uint256 _harvestInterval,
IRewarder[] calldata _rewarders
) public onlyOwner validatePoolByPid(_pid) {
require(_rewarders.length <= 10, "set: too many rewarders");

require(
_depositFeeBP <= MAXIMUM_DEPOSIT_FEE_RATE,
"set: deposit fee too high"
);
require(
_harvestInterval <= MAXIMUM_HARVEST_INTERVAL,
"set: invalid harvest interval"
);

for (
uint256 rewarderId = 0;
rewarderId < _rewarders.length;
++rewarderId
) {
require(
Address.isContract(address(_rewarders[rewarderId])),
"set: rewarder must be contract"
);
}

_massUpdatePools();

totalAllocPoint =
totalAllocPoint -
poolInfo[_pid].allocPoint +
_allocPoint;

poolInfo[_pid].allocPoint = _allocPoint;
poolInfo[_pid].depositFeeBP = _depositFeeBP;
poolInfo[_pid].harvestInterval = _harvestInterval;
poolInfo[_pid].rewarders = _rewarders;

emit Set(
_pid,
_allocPoint,
_depositFeeBP,
_harvestInterval,
_rewarders
);
}

// View function to see pending rewards on frontend.
function pendingTokens(uint256 _pid, address _user)
external
view
validatePoolByPid(_pid)
returns (
address[] memory addresses,
string[] memory symbols,
uint256[] memory decimals,
uint256[] memory amounts
)
{
PoolInfo storage pool = poolInfo[_pid];
UserInfo storage user = userInfo[_pid][_user];
uint256 accFlarePerShare = pool.accFlarePerShare;
uint256 lpSupply = pool.totalLp;

if (block.timestamp > pool.lastRewardTimestamp && lpSupply != 0) {
uint256 multiplier = block.timestamp - pool.lastRewardTimestamp;
uint256 total = 1000;
uint256 lpPercent = total -
teamPercent -
treasuryPercent -
investorPercent;

uint256 flareReward = (multiplier *
flarePerSec *
pool.allocPoint *
lpPercent) /
totalAllocPoint /
total;

accFlarePerShare += (
((flareReward * ACC_TOKEN_PRECISION) / lpSupply)
);
}

uint256 pendingFlare = (((user.amount * accFlarePerShare) /
ACC_TOKEN_PRECISION) - user.rewardDebt) + user.rewardLockedUp;

addresses = new address[](pool.rewarders.length + 1);
symbols = new string[](pool.rewarders.length + 1);
amounts = new uint256[](pool.rewarders.length + 1);
decimals = new uint256[](pool.rewarders.length + 1);

addresses[0] = address(flare);
symbols[0] = IBoringERC20(flare).safeSymbol();
decimals[0] = IBoringERC20(flare).safeDecimals();
amounts[0] = pendingFlare;

for (
uint256 rewarderId = 0;
rewarderId < pool.rewarders.length;
++rewarderId
) {
addresses[rewarderId + 1] = address(
pool.rewarders[rewarderId].rewardToken()
);

symbols[rewarderId + 1] = IBoringERC20(
pool.rewarders[rewarderId].rewardToken()
).safeSymbol();

decimals[rewarderId + 1] = IBoringERC20(
pool.rewarders[rewarderId].rewardToken()
).safeDecimals();

amounts[rewarderId + 1] = pool.rewarders[rewarderId].pendingTokens(
_pid,
_user
);
}
}

/// @notice View function to see pool rewards per sec
function poolRewardsPerSec(uint256 _pid)
external
view
validatePoolByPid(_pid)
returns (
address[] memory addresses,
string[] memory symbols,
uint256[] memory decimals,
uint256[] memory rewardsPerSec
)
{
PoolInfo storage pool = poolInfo[_pid];

addresses = new address[](pool.rewarders.length + 1);
symbols = new string[](pool.rewarders.length + 1);
decimals = new uint256[](pool.rewarders.length + 1);
rewardsPerSec = new uint256[](pool.rewarders.length + 1);

addresses[0] = address(flare);
symbols[0] = IBoringERC20(flare).safeSymbol();
decimals[0] = IBoringERC20(flare).safeDecimals();

uint256 total = 1000;
uint256 lpPercent = total -
teamPercent -
treasuryPercent -
investorPercent;

rewardsPerSec[0] =
(pool.allocPoint * flarePerSec * lpPercent) /
totalAllocPoint /
total;

for (
uint256 rewarderId = 0;
rewarderId < pool.rewarders.length;
++rewarderId
) {
addresses[rewarderId + 1] = address(
pool.rewarders[rewarderId].rewardToken()
);

symbols[rewarderId + 1] = IBoringERC20(
pool.rewarders[rewarderId].rewardToken()
).safeSymbol();

decimals[rewarderId + 1] = IBoringERC20(
pool.rewarders[rewarderId].rewardToken()
).safeDecimals();

rewardsPerSec[rewarderId + 1] = pool
.rewarders[rewarderId]
.poolRewardsPerSec(_pid);
}
}

// View function to see rewarders for a pool
function poolRewarders(uint256 _pid)
external
view
validatePoolByPid(_pid)
returns (address[] memory rewarders)
{
PoolInfo storage pool = poolInfo[_pid];
rewarders = new address[](pool.rewarders.length);
for (
uint256 rewarderId = 0;
rewarderId < pool.rewarders.length;
++rewarderId
) {
rewarders[rewarderId] = address(pool.rewarders[rewarderId]);
}
}

// View function to see if user can harvest FLARE.
function canHarvest(uint256 _pid, address _user)
public
view
validatePoolByPid(_pid)
returns (bool)
{
UserInfo storage user = userInfo[_pid][_user];
return
block.timestamp >= startTimestamp &&
block.timestamp >= user.nextHarvestUntil;
}

// Update reward vairables for all pools. Be careful of gas spending!
function massUpdatePools() external nonReentrant {
_massUpdatePools();
}

// Internal method for massUpdatePools
function _massUpdatePools() internal {
for (uint256 pid = 0; pid < poolInfo.length; ++pid) {
_updatePool(pid);
}
}

// Update reward variables of the given pool to be up-to-date.
function updatePool(uint256 _pid) external nonReentrant {
_updatePool(_pid);
}

// Internal method for _updatePool
function _updatePool(uint256 _pid) internal validatePoolByPid(_pid) {
PoolInfo storage pool = poolInfo[_pid];

if (block.timestamp <= pool.lastRewardTimestamp) {
return;
}

uint256 lpSupply = pool.totalLp;

if (lpSupply == 0 || pool.allocPoint == 0) {
pool.lastRewardTimestamp = block.timestamp;
return;
}

uint256 multiplier = block.timestamp - pool.lastRewardTimestamp;

uint256 flareReward = ((multiplier * flarePerSec) * pool.allocPoint) /
totalAllocPoint;

uint256 total = 1000;
uint256 lpPercent = total -
teamPercent -
treasuryPercent -
investorPercent;

flare.mint(teamAddress, (flareReward * teamPercent) / total);
flare.mint(treasuryAddress, (flareReward * treasuryPercent) / total);
flare.mint(investorAddress, (flareReward * investorPercent) / total);
flare.mint(address(this), (flareReward * lpPercent) / total);

pool.accFlarePerShare +=
(flareReward * ACC_TOKEN_PRECISION * lpPercent) /
pool.totalLp /
total;

pool.lastRewardTimestamp = block.timestamp;

emit UpdatePool(
_pid,
pool.lastRewardTimestamp,
lpSupply,
pool.accFlarePerShare
);
}

function depositWithPermit(
uint256 pid,
uint256 amount,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) public nonReentrant validatePoolByPid(pid) {
PoolInfo storage pool = poolInfo[pid];
IBoringERC20 pair = IBoringERC20(address(pool.lpToken));
pair.permit(msg.sender, address(this), amount, deadline, v, r, s);
_deposit(pid, amount);
}

// Deposit tokens for FLARE allocation.
function deposit(uint256 _pid, uint256 _amount) public nonReentrant {
_deposit(_pid, _amount);
}

// Deposit tokens for FLARE allocation.
function _deposit(uint256 _pid, uint256 _amount)
internal
validatePoolByPid(_pid)
{
require(
block.timestamp >= startTimestamp,
"deposit: farming not started"
);

PoolInfo storage pool = poolInfo[_pid];
UserInfo storage user = userInfo[_pid][msg.sender];

_updatePool(_pid);

payOrLockupPendingFlare(_pid);

if (_amount > 0) {
uint256 beforeDeposit = pool.lpToken.balanceOf(address(this));
pool.lpToken.safeTransferFrom(msg.sender, address(this), _amount);
uint256 afterDeposit = pool.lpToken.balanceOf(address(this));

_amount = afterDeposit - beforeDeposit;

if (pool.depositFeeBP > 0) {
uint256 depositFee = (_amount * pool.depositFeeBP) / 10000;
pool.lpToken.safeTransfer(treasuryAddress, depositFee);

_amount = _amount - depositFee;
}

user.amount += _amount;

if (address(pool.lpToken) == address(flare)) {
totalFlareInPools += _amount;
}
}
user.rewardDebt =
(user.amount * pool.accFlarePerShare) /
ACC_TOKEN_PRECISION;

for (
uint256 rewarderId = 0;
rewarderId < pool.rewarders.length;
++rewarderId
) {
pool.rewarders[rewarderId].onFlareReward(
_pid,
msg.sender,
user.amount
);
}

if (_amount > 0) {
pool.totalLp += _amount;
}

emit Deposit(msg.sender, _pid, _amount);
}

//withdraw tokens
function withdraw(uint256 _pid, uint256 _amount)
public
nonReentrant
validatePoolByPid(_pid)
{
PoolInfo storage pool = poolInfo[_pid];
UserInfo storage user = userInfo[_pid][msg.sender];

//this will make sure that user can only withdraw from his pool
require(user.amount >= _amount, "withdraw: user amount not enough");

//cannot withdraw more than pool's balance
require(pool.totalLp >= _amount, "withdraw: pool total not enough");

_updatePool(_pid);

payOrLockupPendingFlare(_pid);

if (_amount > 0) {
user.amount -= _amount;
if (address(pool.lpToken) == address(flare)) {
totalFlareInPools -= _amount;
}
pool.lpToken.safeTransfer(msg.sender, _amount);
}

user.rewardDebt =
(user.amount * pool.accFlarePerShare) /
ACC_TOKEN_PRECISION;

for (
uint256 rewarderId = 0;
rewarderId < pool.rewarders.length;
++rewarderId
) {
pool.rewarders[rewarderId].onFlareReward(
_pid,
msg.sender,
user.amount
);
}

if (_amount > 0) {
pool.totalLp -= _amount;
}

emit Withdraw(msg.sender, _pid, _amount);
}

// Withdraw without caring about rewards. EMERGENCY ONLY.
function emergencyWithdraw(uint256 _pid) public nonReentrant {
PoolInfo storage pool = poolInfo[_pid];
UserInfo storage user = userInfo[_pid][msg.sender];
uint256 amount = user.amount;

//Cannot withdraw more than pool's balance
require(
pool.totalLp >= amount,
"emergency withdraw: pool total not enough"
);

user.amount = 0;
user.rewardDebt = 0;
user.rewardLockedUp = 0;
user.nextHarvestUntil = 0;
pool.totalLp -= amount;

for (
uint256 rewarderId = 0;
rewarderId < pool.rewarders.length;
++rewarderId
) {
pool.rewarders[rewarderId].onFlareReward(_pid, msg.sender, 0);
}

if (address(pool.lpToken) == address(flare)) {
totalFlareInPools -= amount;
}

pool.lpToken.safeTransfer(msg.sender, amount);

emit EmergencyWithdraw(msg.sender, _pid, amount);
}

// Pay or lockup pending FLARE.
function payOrLockupPendingFlare(uint256 _pid) internal {
PoolInfo storage pool = poolInfo[_pid];
UserInfo storage user = userInfo[_pid][msg.sender];

if (user.nextHarvestUntil == 0 && block.timestamp >= startTimestamp) {
user.nextHarvestUntil = block.timestamp + pool.harvestInterval;
}

uint256 pending = ((user.amount * pool.accFlarePerShare) /
ACC_TOKEN_PRECISION) - user.rewardDebt;

if (canHarvest(_pid, msg.sender)) {
if (pending > 0 || user.rewardLockedUp > 0) {
uint256 pendingRewards = pending + user.rewardLockedUp;

// reset lockup
totalLockedUpRewards -= user.rewardLockedUp;
user.rewardLockedUp = 0;
user.nextHarvestUntil = block.timestamp + pool.harvestInterval;

// send rewards
safeFlareTransfer(msg.sender, pendingRewards);
}
} else if (pending > 0) {
totalLockedUpRewards += pending;
user.rewardLockedUp += pending;
emit RewardLockedUp(msg.sender, _pid, pending);
}
}

// Safe FLARE transfer function, just in case if rounding error causes pool do not have enough FLARE.
function safeFlareTransfer(address _to, uint256 _amount) internal {
if (flare.balanceOf(address(this)) > totalFlareInPools) {
//flareBal = total FLARE in FlareDistributor - total FLARE in FLARE pools, this will make sure that FlareDistributor never transfer rewards from deposited FLARE pools
uint256 flareBal = flare.balanceOf(address(this)) -
totalFlareInPools;
if (_amount >= flareBal) {
flare.safeTransfer(_to, flareBal);
} else if (_amount > 0) {
flare.safeTransfer(_to, _amount);
}
}
}

function updateEmissionRate(uint256 _flarePerSec) public onlyOwner {
_massUpdatePools();

emit EmissionRateUpdated(msg.sender, flarePerSec, _flarePerSec);

flarePerSec = _flarePerSec;
}

function updateAllocPoint(uint256 _pid, uint256 _allocPoint)
public
onlyOwner
{
_massUpdatePools();

emit AllocPointsUpdated(
msg.sender,
poolInfo[_pid].allocPoint,
_allocPoint
);

totalAllocPoint =
totalAllocPoint -
poolInfo[_pid].allocPoint +
_allocPoint;
poolInfo[_pid].allocPoint = _allocPoint;
}

function poolTotalLp(uint256 pid) external view returns (uint256) {
return poolInfo[pid].totalLp;
}

// Function to harvest many pools in a single transaction
function harvestMany(uint256[] calldata _pids) public nonReentrant {
require(_pids.length <= 30, "harvest many: too many pool ids");
for (uint256 index = 0; index < _pids.length; ++index) {
_deposit(_pids[index], 0);
}
}

// Update team address by the previous team address.
function setTeamAddress(address _teamAddress) public {
require(
msg.sender == teamAddress,
"set team address: only previous team address can call this method"
);
require(
_teamAddress != address(0),
"set team address: invalid new team address"
);
teamAddress = _teamAddress;
emit SetTeamAddress(msg.sender, _teamAddress);
}

function setTeamPercent(uint256 _newTeamPercent) public onlyOwner {
require(
_newTeamPercent <= 1000,
"set team percent: invalid percent value"
);
require(
treasuryPercent + _newTeamPercent + investorPercent <= 1000,
"set team percent: total percent over max"
);
emit SetTeamPercent(teamPercent, _newTeamPercent);
teamPercent = _newTeamPercent;
}

// Update treasury address by the previous treasury.
function setTreasuryAddress(address _treasuryAddress) public {
require(
msg.sender == treasuryAddress,
"set treasury address: only previous treasury address can call this method"
);
require(
_treasuryAddress != address(0),
"set treasury address: invalid new treasury address"
);
treasuryAddress = _treasuryAddress;
emit SetTreasuryAddress(msg.sender, _treasuryAddress);
}

function setTreasuryPercent(uint256 _newTreasuryPercent) public onlyOwner {
require(
_newTreasuryPercent <= 1000,
"set treasury percent: invalid percent value"
);
require(
teamPercent + _newTreasuryPercent + investorPercent <= 1000,
"set treasury percent: total percent over max"
);
emit SetTreasuryPercent(treasuryPercent, _newTreasuryPercent);
treasuryPercent = _newTreasuryPercent;
}

// Update the investor address by the previous investor.
function setInvestorAddress(address _investorAddress) public {
require(
msg.sender == investorAddress,
"set investor address: only previous investor can call this method"
);
require(
_investorAddress != address(0),
"set investor address: invalid new investor address"
);
investorAddress = _investorAddress;
emit SetInvestorAddress(msg.sender, _investorAddress);
}

function setInvestorPercent(uint256 _newInvestorPercent) public onlyOwner {
require(
_newInvestorPercent <= 1000,
"set investor percent: invalid percent value"
);
require(
teamPercent + _newInvestorPercent + treasuryPercent <= 1000,
"set investor percent: total percent over max"
);
emit SetInvestorPercent(investorPercent, _newInvestorPercent);
investorPercent = _newInvestorPercent;
}
}

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