[Feature]: Add "Mark as Revised" Progress Tracker for Topics with localStorage Persistence

[divyanshim27]

Summary

openCSE is used primarily by students preparing for exams. Currently, there is no way for a student to track which topics they have already read and revised. Every time they return to the site, they start from scratch with no visual indication of their progress.

Adding a simple "Mark as Revised" checkbox or button per topic would dramatically improve the study utility of the platform.

Problem

• Students revisiting the site cannot see which topics they have already covered.
• There is no progress indicator at the subject or semester level.
• The platform functions as a static reference only, with no personalization layer.

Proposed Solution

I will implement a client-side progress tracker using localStorage — no backend or auth required:

Core data structure:

// lib/progress.ts
const STORAGE_KEY = 'opencse-progress';

export function markRevised(topicSlug: string): void {
  const progress = getProgress();
  progress[topicSlug] = { revisedAt: new Date().toISOString() };
  localStorage.setItem(STORAGE_KEY, JSON.stringify(progress));
}

export function isRevised(topicSlug: string): boolean {
  const progress = getProgress();
  return !!progress[topicSlug];
}

export function getProgress(): Record<string, { revisedAt: string }> {
  const raw = localStorage.getItem(STORAGE_KEY);
  return raw ? JSON.parse(raw) : {};
}

UI additions:

1. A "✓ Mark as Revised" button at the bottom of each notes page that toggles state and persists to localStorage.
2. A small green checkmark badge on topic cards in the subject index listing, so students can see at a glance what they've covered.
3. An optional progress bar at the subject level (e.g., "3 of 8 topics revised") on the subject landing page.
4. A "Reset Progress" option in a settings area or per-subject page for re-study sessions.

All TypeScript, all client-side, zero new dependencies.

Please assign this to me. I'm happy to share a mockup first.

Labels: enhancement, feature-request, student-experience, help wanted, GSSoC 2026

[parthkulkarni2004]

Hi, I’d like to contribute to this project. Could you please assign me an issue that I can work on? I’d be happy to contribute. Thank you! 🙌