📌 Overview

The AI Student HelpDesk Bot is a role-based, intelligent assistant designed to support students and staff at a university. It features a conversational interface (chat and voice), real-time LLM-based interaction, database tools, document understanding, and role-based actions. The system has two main components:

• Frontend (React.js)
• Backend (FastAPI + LangGraph + LangChain + Whisper)

🔧 Frontend (React.js)

Features:

• Chat Interface with:
  • Role-based views (Guest / Student / Staff)
  • Realtime messaging
  • Collapsible sidebar for mode toggle
• Voice Mode
  • Microphone access
  • Streams audio to backend via WebSocket
  • Displays transcribed and bot response text
• Authentication
  • Login & Register
  • Session-based storage

🔩 Backend (FastAPI)

Core Components:

1. LangGraph Flow

Start Node: AUTH NODE

• Verifies if JWT/session token exists.
• If not logged in → activates Guest Mode.

Guest Mode

• Handles queries like:
  • Admission Process
  • Course Details
  • Fee Structure
• Powered by RAG (Retrieval-Augmented Generation):
  • Vector store of college documents (PDFs, websites)
  • Uses LangChain retriever tools

If Logged In → Check Role