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NS Exam Portal - Changelog

Version 2.0.0 (Current Production) - June 2026​

Major Completed Features​

1. Super Admin Platform Controls ✅​

  • Complete Client Management: Full CRUD operations for client organizations
  • Subscription Administration: Plan assignments, expiry management, status updates
  • Package Approval Workflow: Pay Per Test package request/approval system
  • Platform Settings: Maintenance mode, announcement banners, registration controls
  • Audit Dashboard: Comprehensive action logging with filters and export
  • Security Controls: Client suspension, password reset, access revocation

2. Subscription System ✅​

  • Four-Tier Subscription Model: Free, Starter (₹1,999/mo), Growth (₹3,999/mo), Enterprise (custom)
  • Plan-Driven Limits: Exams/month, candidates/exam, questions/exam with server-side enforcement
  • Feature Flags: CSV import, XLSX export, analytics, branding, proctoring tied to plans
  • Subscription Requests: Client upgrade requests with Super Admin approval workflow
  • Automatic Expiry: Lazy expiry checking on Super Admin page loads
  • History Tracking: Complete subscription change audit trail

3. Pay Per Test System ✅​

  • Package Catalog: Base (₹99), Basic (₹199), Standard (₹399), Professional (₹499), Placement Drive (₹1,499)
  • Inventory Management: Client package purchases with available/used tracking
  • Capacity Enforcement: Hard limits on questions and candidates per package
  • Feature Locking: Proctoring, branding, import/export features tied to packages
  • Read-Only Protection: Tests become read-only when capacity exhausted
  • Custom Limits: Super Admin can override package limits per purchase

4. Exam Engine Enhancements ✅​

  • Section-Based Testing: Multiple sections with independent configuration
  • Section Timers: Per-section countdown timers with auto-advance
  • Navigation Locking: Prevent returning to completed sections
  • Option Shuffling: Randomize answer choices per question
  • Question Shuffling: Randomize question order within sections
  • Resume Capability: Continue interrupted attempts with preserved state

5. Security Hardening ✅​

  • Guest Attempt Security: attempt_token requirement for all guest operations
  • BOLA/IDOR Protection: Comprehensive ownership verification across all endpoints
  • Rate Limiting: Global (1000/15min) and strict (100/1min) tiers
  • Tenant Isolation: Database-level partitioning with query filtering
  • Input Validation: Zod schemas for all API inputs
  • CORS Configuration: Restricted origins with Firebase compatibility

6. Proctoring System ✅​

  • Event Types: TAB_SWITCH, WINDOW_BLUR, FULLSCREEN_EXIT, NO_FACE, MULTIPLE_FACES
  • Severity Scoring: LOW (1), MEDIUM (2-3), HIGH (5) with cumulative risk
  • Evidence Capture: Base64 image storage for camera events
  • Auto-Submit: 3-strike system (15+ risk score) triggers automatic submission
  • Feature Gating: Basic and camera proctoring tied to plans/packages
  • Deduplication: 30-second window prevents event spam

7. Analytics & Reporting ✅​

  • Super Admin Dashboard: Platform-wide metrics, subscription distribution, live activity
  • Client Admin Dashboard: Tenant-specific analytics, performance metrics, top performers
  • XLSX Reports: 3-sheet workbooks (Summary, Detailed Questions, Analytics)
  • Secure Downloads: Signed URLs for guest report access
  • Performance Metrics: Average scores, pass rates, time analysis
  • Live Monitoring: Concurrent users, API latency, system health

8. Bulk Operations ✅​

  • CSV Question Import: Two-stage validation with batch rollback
  • CSV Student Import: Bulk student account creation
  • Question Versioning: Edit tracking with version increments
  • Import Logging: Complete audit trail of bulk operations
  • Error Handling: Detailed validation errors with row-level feedback

9. UI/UX Improvements ✅​

  • Role-Based Layouts: Different navigation and dashboards per role
  • Responsive Design: Mobile-optimized interfaces
  • Dark/Light Theme: System preference detection with toggle
  • Loading States: Skeleton screens and progress indicators
  • Error Boundaries: Graceful error handling with recovery options
  • Accessibility: ARIA labels, keyboard navigation, screen reader support

Technical Architecture Updates​

Backend Architecture​

  • Database Migration: PostgreSQL → Turso (libSQL) for edge distribution
  • Containerization: Docker multi-stage builds for GCP Cloud Run
  • TypeScript: Full TypeScript implementation with strict mode
  • ESM Modules: Modern JavaScript modules throughout
  • REST + RPC: Hybrid API design for complex operations
  • Middleware Stack: Comprehensive auth, validation, error handling

Frontend Architecture​

  • Build Tool: Vite with optimized production builds
  • Component Library: shadcn/ui with Radix UI primitives
  • State Management: React Context + local state
  • Code Splitting: Route-based chunk optimization
  • Performance: Bundle analysis and optimization
  • Testing: Component testing with React Testing Library

Deployment Infrastructure​

  • Frontend: Cloudflare Pages with edge CDN
  • Backend: GCP Cloud Run with auto-scaling
  • Database: Turso with global distribution
  • CI/CD: GCP Cloud Build automated pipelines
  • Monitoring: Health checks, logs, performance metrics

Version 1.0.0 (Initial Release) - 2024​

Foundation Features​

  • Basic multi-tenant architecture
  • Simple test creation and management
  • Student exam taking with timer
  • Basic grading system
  • Firebase authentication
  • PostgreSQL database

Limitations Addressed in v2.0​

  • No subscription management
  • Limited security controls
  • No proctoring features
  • Basic UI with limited customization
  • No bulk operations
  • Limited reporting capabilities
  • No Pay Per Test system
  • Basic deployment on Vercel/Railway

Roadmap​

Short Term (Next 3 Months)​

  • Email notification system
  • Enhanced proctoring with AI detection
  • Payment gateway integration
  • Advanced analytics dashboard
  • Mobile app development

Medium Term (6-12 Months)​

  • Live proctoring with human oversight
  • Coding assessment sandbox
  • AI-powered question generation
  • Integration with LMS systems
  • Internationalization support

Long Term (12+ Months)​

  • Blockchain-based certificate verification
  • AR/VR assessment capabilities
  • Predictive cheating detection
  • Global deployment with regional compliance
  • Enterprise-grade scalability

Implementation Status​

Fully Implemented (11 features)​

  • Multi-tenant architecture ✅
  • Subscription system (4-tier) ✅
  • Pay Per Test system ✅
  • Exam engine with timers ✅
  • Proctoring with evidence ✅
  • Analytics and reporting ✅
  • Bulk operations (CSV) ✅
  • Security hardening ✅
  • Audit logging ✅
  • Guest access ✅
  • Section-based testing ✅

Planned Features​

  • Email notifications
  • Payment gateway integration
  • Advanced server-side proctoring
  • Coding sandbox
  • LLM-assisted grading

This changelog documents the evolution of the NS Exam Portal from initial concept to production-grade assessment platform. Regular updates will be made as new features are added and improvements are implemented.