EpochBasedTokenClaim

contract IERC20 rewardToken

address manager

mapping(uint256 => bytes32) epochRoots

mapping(uint256 => string) epochCids

mapping(uint256 => mapping(address => bool)) epochTraderClaimed

event ManagerUpdated(address newManager)

event TokensWithdrawn()

event EpochMerkleRootSet(uint256 epoch, bytes32 root, uint256 totalRewards, string cid)

event TokensClaimed(uint256 epoch, address user, uint256 rewardAmount)

event TokensClaimed(uint256[] epochs, address user, uint256 rewardAmount)

error AddressZero()

error NotManager()

error RootAlreadySet()

error RootZero()

error RewardsZero()

error CidZero()

error InvalidEpochs()

error ArrayLengthMismatch()

error EpochNotSet()

error NotEnoughBalance()

error AlreadyClaimed()

error InvalidProof()

constructor(contract IERC20 _rewardToken, address _owner, address _manager) public

modifier onlyManager()

function setManager(address _manager) external

function setRoot(uint256 _epoch, bytes32 _root, uint256 _totalRewards, string _cid) external

function withdrawTokens() external

function claimRewards(uint256 _epoch, uint256 _rewardAmount, bytes32[] _proof) external

function claimMultipleRewards(uint256[] _epochs, uint256[] _rewardAmounts, bytes32[][] _proofs) external

function _hashLeaf(address _user, uint256 _amount) internal pure returns (bytes32)

function _validateClaim(uint256 _epoch, address _trader, uint256 _rewardAmount, bytes32[] _proof) internal view