Offline Learning Capability and Progressive Web App (PWA) Integration

[polichdev]

Transform the platform into a Progressive Web App to allow students to download course materials and continue learning without an active internet connection. This feature is essential for mobile users and ensures a seamless experience in low-connectivity environments.

Key Topics and Tasks

• Service Worker Implementation

  • Development of a service worker to cache core assets and lesson data sourced from course.js.
  • Implementation of an offline-first strategy for previously visited lessons to ensure uninterrupted learning.

• Offline Progress Synchronization

  • Development of a local storage buffer to persist quiz attempts, lesson completion, and XP earned while offline.
  • Implementation of a background synchronization mechanism to update the primary database once network connectivity is restored.

Acceptance Criteria

• Previously opened lessons must be fully accessible without an active internet connection.
• Offline progress data must be reliably synchronized with the server within 60 seconds after reconnection.
• No data loss is permitted during offline-to-online state transitions.
• All offline-related logic must operate transparently without requiring user intervention.
• The solution must remain fully compatible with the existing Glassmorphism UI and responsive layout.