Add `Status` Enum & `updateIssueStatus` Function

[nottherealalanturing]

Module: Smart Contracts (Flare Network – Solidity)
Description:
Introduce a Status enum to clearly define the lifecycle of an issue. Update the Issue struct to use this enum and implement a function that allows authorized entities to update the status of a given issue.

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✅ Tasks

1. Define the Status Enum

• Add the following enum to GroundUpIssue.sol:

enum Status { Pending, UnderReview, Resolved, Rejected }

2. Update the Issue Struct

• Replace the status field type from string to Status:

Status status;

• Initialize to Status.Pending when reporting an issue (reportIssue).

3. Implement updateIssueStatus Function

• Add the function:

function updateIssueStatus(uint256 _issueId, Status _newStatus) public onlyOwner // or onlyAuthorized

• Requirements:

  • Ensure the issue exists.
  • Update the status field in the corresponding Issue struct.
  • Update latestStatusUpdateTimestamp to block.timestamp.
  • Emit a StatusUpdated event.

4. Declare the Event

event StatusUpdated(
  uint256 indexed issueId,
  Status newStatus,
  address indexed updater,
  uint256 timestamp
);

5. Access Control

• Restrict updateIssueStatus to onlyOwner or use a custom onlyAuthorized modifier, if already implemented.

6. Testing

• Unit test the following:

  • Status updates work for valid issue IDs.
  • The enum transitions are properly reflected in storage.
  • The StatusUpdated event is emitted.
  • Unauthorized access is prevented.

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✅ Acceptance Criteria

• Status enum is defined and used in the Issue struct.
• reportIssue initializes the issue with Status.Pending.
• updateIssueStatus modifies the issue status securely and updates timestamp.
• Event logs are correctly emitted.
• All logic is tested and passes.