DocuMind Project Structure and Progress

Folder and File Structure

Backend

The backend is a FastAPI application handling the core RAG (Retrieval-Augmented Generation) logic.

• backend/main.py: The entry point for the FastAPI server. It exposes endpoints for uploading documents (/api/upload) and asking questions (/api/chat).
• backend/requirements.txt: The python dependencies for the backend (FastAPI, LangChain, ChromaDB, etc.).
• backend/src/data_loader.py: Responsible for loading and parsing different types of documents (e.g., PDFs).
• backend/src/embedding.py: Handles the chunking of document text and generating embeddings using sentence transformers.
• backend/src/search.py: Contains the RAGSearch class which interacts with ChromaDB to store documents and retrieve context, and uses Groq/Langchain to generate answers based on the retrieved context.
• backend/chroma_db/: Directory where the ChromaDB vector database is persisted.
• backend/temp_uploads/: Temporary directory for storing files uploaded via the API before processing.

Frontend

The frontend is a Next.js application (React framework).

• frontend/package.json: Contains project metadata, scripts (dev, build), and Node.js dependencies (Next.js, React, TailwindCSS).
• frontend/src/app/page.tsx: The main React component/page for the application UI. It likely contains the chat interface and file upload component.
• frontend/src/app/layout.tsx: The root layout of the Next.js application, defining the global HTML structure and importing global styles.
• frontend/src/app/globals.css: Global CSS file, including TailwindCSS directives.

How to Start the Full Application

1. Start the Backend

Open a terminal and navigate to the backend directory:

cd backend
# Create and activate a virtual environment (if not already done)
uv venv
.venv\Scripts\activate # On Windows

# Install dependencies
uv pip install -r requirements.txt

# Start the FastAPI server
python main.py

The backend API will run on http://localhost:8000.

2. Start the Frontend

Open another terminal and navigate to the frontend directory:

cd frontend
# Install dependencies (if not already done)
npm install

# Start the Next.js development server
npm run dev

The frontend application will be available at http://localhost:3000.