Initial commit with 🏗️ create-eth @ 2.0.4
This commit is contained in:
42
packages/hardhat/contracts/02_Optimistic/Decider.sol
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42
packages/hardhat/contracts/02_Optimistic/Decider.sol
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// SPDX-License-Identifier: MIT
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pragma solidity >=0.8.0 <0.9.0;
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contract Decider {
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address public owner;
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IOptimisticOracle public oracle;
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event DisputeSettled(uint256 indexed assertionId, bool resolvedValue);
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constructor(address _oracle) {
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owner = msg.sender;
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oracle = IOptimisticOracle(_oracle);
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}
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/**
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* @notice Settle a dispute by determining the true/false outcome
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* @param assertionId The ID of the assertion to settle
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* @param resolvedValue The true/false outcome determined by the decider
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*/
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function settleDispute(uint256 assertionId, bool resolvedValue) external {
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require(assertionId >= 1, "Invalid assertion ID");
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// Call the oracle's settleAssertion function
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oracle.settleAssertion(assertionId, resolvedValue);
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emit DisputeSettled(assertionId, resolvedValue);
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}
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function setOracle(address newOracle) external {
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require(msg.sender == owner, "Only owner can set oracle");
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oracle = IOptimisticOracle(newOracle);
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}
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/**
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* @notice Allow the contract to receive ETH
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*/
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receive() external payable {}
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}
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interface IOptimisticOracle {
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function settleAssertion(uint256, bool) external;
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}
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211
packages/hardhat/contracts/02_Optimistic/OptimisticOracle.sol
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211
packages/hardhat/contracts/02_Optimistic/OptimisticOracle.sol
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// SPDX-License-Identifier: MIT
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pragma solidity >=0.8.0 <0.9.0;
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contract OptimisticOracle {
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////////////////
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/// Enums //////
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////////////////
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enum State {
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Invalid,
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Asserted,
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Proposed,
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Disputed,
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Settled,
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Expired
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}
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/////////////////
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/// Errors //////
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/////////////////
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error AssertionNotFound();
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error AssertionProposed();
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error InvalidValue();
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error InvalidTime();
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error ProposalDisputed();
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error NotProposedAssertion();
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error AlreadyClaimed();
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error AlreadySettled();
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error AwaitingDecider();
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error NotDisputedAssertion();
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error OnlyDecider();
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error OnlyOwner();
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error TransferFailed();
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//////////////////////
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/// State Variables //
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//////////////////////
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struct EventAssertion {
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address asserter;
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address proposer;
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address disputer;
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bool proposedOutcome;
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bool resolvedOutcome;
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uint256 reward;
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uint256 bond;
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uint256 startTime;
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uint256 endTime;
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bool claimed;
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address winner;
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string description;
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}
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uint256 public constant MINIMUM_ASSERTION_WINDOW = 3 minutes;
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uint256 public constant DISPUTE_WINDOW = 3 minutes;
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address public decider;
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address public owner;
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uint256 public nextAssertionId = 1;
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mapping(uint256 => EventAssertion) public assertions;
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////////////////
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/// Events /////
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////////////////
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event EventAsserted(uint256 assertionId, address asserter, string description, uint256 reward);
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event OutcomeProposed(uint256 assertionId, address proposer, bool outcome);
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event OutcomeDisputed(uint256 assertionId, address disputer);
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event AssertionSettled(uint256 assertionId, bool outcome, address winner);
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event DeciderUpdated(address oldDecider, address newDecider);
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event RewardClaimed(uint256 assertionId, address winner, uint256 amount);
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event RefundClaimed(uint256 assertionId, address asserter, uint256 amount);
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///////////////////
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/// Modifiers /////
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///////////////////
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/**
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* @notice Modifier to restrict function access to the designated decider
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* @dev Ensures only the decider can settle disputed assertions
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*/
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modifier onlyDecider() {
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if (msg.sender != decider) revert OnlyDecider();
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_;
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}
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/**
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* @notice Modifier to restrict function access to the contract owner
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* @dev Ensures only the owner can update critical contract parameters
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*/
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modifier onlyOwner() {
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if (msg.sender != owner) revert OnlyOwner();
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_;
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}
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///////////////////
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/// Constructor ///
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///////////////////
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constructor(address _decider) {
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decider = _decider;
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owner = msg.sender;
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}
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///////////////////
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/// Functions /////
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///////////////////
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/**
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* @notice Updates the decider address (only contract owner)
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* @dev Changes the address authorized to settle disputed assertions.
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* Emits DeciderUpdated event with old and new addresses.
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* @param _decider The new address that will act as decider for disputed assertions
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*/
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function setDecider(address _decider) external onlyOwner {
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address oldDecider = address(decider);
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decider = _decider;
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emit DeciderUpdated(oldDecider, _decider);
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}
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/**
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* @notice Returns the complete assertion details for a given assertion ID
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* @dev Provides access to all fields of the EventAssertion struct
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* @param assertionId The unique identifier of the assertion to retrieve
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* @return The complete EventAssertion struct containing all assertion data
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*/
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function getAssertion(uint256 assertionId) external view returns (EventAssertion memory) {
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return assertions[assertionId];
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}
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/**
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* @notice Creates a new assertion about an event with a true/false outcome
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* @dev Requires ETH payment as reward for correct proposers. Bond requirement is 2x the reward.
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* Sets default timestamps if not provided. Validates timing requirements.
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* @param description Human-readable description of the event (e.g. "Did X happen by time Y?")
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* @param startTime When proposals can begin (0 for current block timestamp)
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* @param endTime When the assertion expires (0 for startTime + minimum window)
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* @return The unique assertion ID for the newly created assertion
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*/
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function assertEvent(
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string memory description,
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uint256 startTime,
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uint256 endTime
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) external payable returns (uint256) {}
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/**
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* @notice Proposes the outcome (true or false) for an asserted event
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* @dev Requires bonding ETH equal to 2x the original reward. Sets dispute window deadline.
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* Can only be called once per assertion and within the assertion time window.
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* @param assertionId The unique identifier of the assertion to propose an outcome for
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* @param outcome The proposed boolean outcome (true or false) for the event
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*/
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function proposeOutcome(uint256 assertionId, bool outcome) external payable {}
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/**
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* @notice Disputes a proposed outcome by bonding ETH
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* @dev Requires bonding ETH equal to the bond amount. Can only dispute once per assertion
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* and must be within the dispute window after proposal.
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* @param assertionId The unique identifier of the assertion to dispute
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*/
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function disputeOutcome(uint256 assertionId) external payable {}
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/**
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* @notice Claims reward for undisputed assertions after dispute window expires
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* @dev Anyone can trigger this function. Transfers reward + bond to the proposer.
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* Can only be called after dispute window has passed without disputes.
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* @param assertionId The unique identifier of the assertion to claim rewards for
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*/
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function claimUndisputedReward(uint256 assertionId) external {}
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/**
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* @notice Claims reward for disputed assertions after decider settlement
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* @dev Anyone can trigger this function. Pays decider fee and transfers remaining rewards to winner.
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* Can only be called after decider has settled the dispute.
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* @param assertionId The unique identifier of the disputed assertion to claim rewards for
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*/
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function claimDisputedReward(uint256 assertionId) external {}
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/**
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* @notice Claims refund for assertions that receive no proposals before deadline
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* @dev Anyone can trigger this function. Returns the original reward to the asserter.
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* Can only be called after assertion deadline has passed without any proposals.
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* @param assertionId The unique identifier of the expired assertion to claim refund for
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*/
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function claimRefund(uint256 assertionId) external {}
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/**
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* @notice Resolves disputed assertions by determining the correct outcome (only decider)
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* @dev Sets the resolved outcome and determines winner based on proposal accuracy.
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* @param assertionId The unique identifier of the disputed assertion to settle
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* @param resolvedOutcome The decider's determination of the true outcome
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*/
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function settleAssertion(uint256 assertionId, bool resolvedOutcome) external onlyDecider {}
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/**
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* @notice Returns the current state of an assertion based on its lifecycle stage
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* @dev Evaluates assertion progress through states: Invalid, Asserted, Proposed, Disputed, Settled, Expired
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* @param assertionId The unique identifier of the assertion to check state for
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* @return The current State enum value representing the assertion's status
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*/
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function getState(uint256 assertionId) external view returns (State) {}
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/**
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* @notice Returns the final resolved outcome of a settled assertion
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* @dev For undisputed assertions, returns the proposed outcome after dispute window.
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* For disputed assertions, returns the decider's resolved outcome.
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* @param assertionId The unique identifier of the assertion to get resolution for
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* @return The final boolean outcome of the assertion
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*/
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function getResolution(uint256 assertionId) external view returns (bool) {}
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}
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