Add activity feed API

[cameroncooke]

No description provided.

[coderabbitai]

Important

Review skipped

Draft detected.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

✨ Finishing Touches

🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch 08-18-demo_cd981bac_add_activity_feed_api

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

🪧 Tips

Chat

There are 3 ways to chat with CodeRabbit:

• Review comments: Directly reply to a review comment made by CodeRabbit. Example:
  • I pushed a fix in commit <commit_id>, please review it.
  • Open a follow-up GitHub issue for this discussion.
• Files and specific lines of code (under the "Files changed" tab): Tag @coderabbitai in a new review comment at the desired location with your query.
• PR comments: Tag @coderabbitai in a new PR comment to ask questions about the PR branch. For the best results, please provide a very specific query, as very limited context is provided in this mode. Examples:
  • @coderabbitai gather interesting stats about this repository and render them as a table. Additionally, render a pie chart showing the language distribution in the codebase.
  • @coderabbitai read the files in the src/scheduler package and generate a class diagram using mermaid and a README in the markdown format.

Support

Need help? Create a ticket on our support page for assistance with any issues or questions.

CodeRabbit Commands (Invoked using PR/Issue comments)

Type @coderabbitai help to get the list of available commands.

Other keywords and placeholders

• Add @coderabbitai ignore anywhere in the PR description to prevent this PR from being reviewed.
• Add @coderabbitai summary to generate the high-level summary at a specific location in the PR description.
• Add @coderabbitai anywhere in the PR title to generate the title automatically.

CodeRabbit Configuration File (.coderabbit.yaml)

• You can programmatically configure CodeRabbit by adding a .coderabbit.yaml file to the root of your repository.
• Please see the configuration documentation for more information.
• If your editor has YAML language server enabled, you can add the path at the top of this file to enable auto-completion and validation: # yaml-language-server: $schema=https://coderabbit.ai/integrations/schema.v2.json

Status, Documentation and Community

• Visit our Status Page to check the current availability of CodeRabbit.
• Visit our Documentation for detailed information on how to use CodeRabbit.
• Join our Discord Community to get help, request features, and share feedback.
• Follow us on X/Twitter for updates and announcements.

[claude]

Claude finished @cameroncooke's task —— View job

---

PR Review Complete ✅

Review Tasks

• Read and analyze the added graphite-demo/server.js file
• Evaluate code quality and best practices
• Check for potential bugs or issues
• Assess performance considerations
• Review security concerns
• Evaluate test coverage
• Provide comprehensive feedback

---

Code Review Feedback

Overview

This PR adds a simple Express.js server that provides an activity feed API endpoint. The implementation is straightforward but has several areas for improvement.

✅ Positive Aspects

• Clean, readable code structure
• Simple and functional implementation
• Appropriate use of Express.js for a basic API server
• Consistent code formatting

⚠️ Issues and Recommendations

1. Code Quality & Best Practices

• Missing error handling: The server has no error handling middleware or try-catch blocks
• Hard-coded port: Port 3000 is hard-coded instead of using environment variables
• No middleware setup: Missing common middleware like CORS, body parsing, logging
• Inconsistent data structure: Activity items have inconsistent id values (1000, 2000, 13)

2. Potential Bugs

• No input validation: The /feed endpoint doesn't validate query parameters or handle malformed requests
• Memory-only data: Activity feed data will be lost on server restart (not persistent)

3. Performance Considerations

• No pagination: The endpoint returns all activity items at once, which won't scale well with larger datasets
• No caching: No cache headers or caching strategy implemented
• No rate limiting: API is vulnerable to abuse without rate limiting

4. Security Concerns

• No CORS configuration: Could cause issues with cross-origin requests
• No input sanitization: Although not currently needed, future endpoints should sanitize inputs
• No authentication: API is completely open (may be intentional for demo)
• No HTTPS enforcement: Server only runs on HTTP

5. Test Coverage

• ❌ No tests: No unit tests, integration tests, or API tests provided
• No test framework: No testing infrastructure set up

🔧 Suggested Improvements

Immediate fixes:

// Use environment variables for configuration
const port = process.env.PORT || 3000;

// Add basic error handling middleware
app.use((err, req, res, next) => {
  console.error(err.stack);
  res.status(500).json({ error: 'Something went wrong!' });
});

// Add consistent ID structure
const activityFeed = [
  { id: 1, title: 'New Photo Uploaded', body: 'Alice uploaded a new photo to her album.' },
  { id: 2, title: 'Comment on Post', body: "Bob commented on Charlie's post." },
  { id: 3, title: 'Status Update', body: 'Charlie updated their status: "Excited about the new project!"' }
];

Medium-term improvements:

• Add pagination support (?page=1&limit=10)
• Implement basic logging with morgan or similar
• Add CORS middleware if needed for frontend integration
• Add input validation with joi or express-validator
• Add basic API documentation

Long-term considerations:

• Implement persistent data storage (database)
• Add authentication/authorization if needed
• Add comprehensive test suite
• Add monitoring and health check endpoints
• Consider API versioning (/api/v1/feed)

📝 Context Questions

Since there's no PR description provided, it would be helpful to understand:

• Is this intended as a demo/prototype or production code?
• Will this integrate with a frontend application?
• Are there specific requirements for data persistence?
• What's the expected scale/usage for this API?

---

Overall Assessment: This is a functional starting point for an activity feed API, but it needs additional work for production readiness, particularly around error handling, testing, and scalability considerations.

[cameroncooke]

• Add activity feed API #97 👈 (View in Graphite)
• main

This stack of pull requests is managed by Graphite. Learn more about stacking.