BE_7 - Question Creation Events

[notjackl3]

Summary

Implement real-time question creation with rate limiting, validation, and broadcasting to all session participants.
[Estimated hours: 9-10]

Objectives

• Create question:create event handler
• Implement rate limiting (10 questions per minute)
• Validate question content and visibility
• Save question to database
• Broadcast new question to session room
• Handle anonymous questions properly

Description

When a student asks a question, it should appear instantly for all users in the session (respecting visibility rules). This ticket handles the most critical real-time feature of AskEasy.

User Flow

1. Student types question and clicks "Ask"
2. Frontend emits question:create event
3. Backend validates content and checks rate limit
4. Question saved to database
5. Backend broadcasts question:created to all users in session
6. All clients update their question list

Technical Details

File Structure

src/socket/handlers/
└── questionHandlers.ts

Functions:
- handleQuestionCreate(socket, io)
- validateQuestionContent(content)
- checkQuestionRateLimit(userId)
- broadcastQuestion(io, sessionId, question)

Acceptance Criteria

• Student can create question → appears for all users
• Anonymous question doesn't reveal author
• Rate limit blocks after 10 questions in 1 minute
• Rate limit error message shown to user
• Question with visibility "TA" only appears for TAs and professors
• Question with visibility "PROFESSOR" only appears for professors
• Invalid content (too short/long) rejected with error
• Cannot create question when submissions disabled
• Question linked to correct slide if slideId provided

Resources

• Profanity Filter Library
• Socket.IO Emit Cheat Sheet