Implement discussion section CRUD operations with rate limiting

[Copilot]

Adds complete discussion functionality to CodeSM platform. Backend implementation existed but had critical bugs preventing use; frontend was stubbed out.

Backend Fixes

Route corrections:

• Fixed delete route missing discussionId parameter
• Changed like/dislike from GET to POST
• Corrected typo: disscussionId → discussionId
• Added rate limiting to all write operations (create, comment, like, dislike)

Controller bugs:

// Before: extracting entire objects
const content = req.body;
const discussionId = req.params;

// After: proper destructuring
const { content } = req.body;
const { discussionId } = req.params;

• Fixed ApiResponse constructor argument order in getDiscussions

Frontend Implementation

Navigation:

• Added "Discussions" link to navbar (positioned after "Problems")

DiscussionPage component:

• List view with like/dislike counts, expandable comments
• Create form (toggleable, authenticated users only)
• Comment functionality with real-time interaction
• Loading states, error handling, auth checks
• Dark theme matching existing UI

API integration:

• Fixed like/dislike calls to use POST
• Corrected response data access: response.data.data vs response.data.message

Security

Rate limiting applied following existing submission.route.js pattern:

router.post('/', verifyJWT, rateLimitMiddleware, createDiscussion);
router.post('/:discussionId/like', verifyJWT, rateLimitMiddleware, likeDiscussion);

Note: Application-wide CSRF protection remains unimplemented (pre-existing).

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Make a discussion section crud operation</issue_title>
<issue_description>
problem breakdown:
create model of discussion
create crud operation
create frontend for discussion section option should to next to problems
</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Make a discussion section crud operation #11

---

💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Preview	Comments	Updated (UTC)
code-sm	Ready	Preview	Comment	Nov 23, 2025 4:44pm