Aiva Backend Development for AI Virtual Assistant by Md Aabid HussainAiva Backend Development for AI Virtual Assistant by Md Aabid Hussain

Aiva Backend Development for AI Virtual Assistant

Portfolio project
Md Aabid Hussain

Aiva Backend - README

📌 Overview

The Aiva Backend powers the AI virtual assistant functionality for the Aiva mobile app. It is built with Node.js and designed to interact with users intelligently through natural language, summarization, reminders, and email-based interactions.
This backend acts as an AI agent using the Gemini model, deployed on a DigitalOcean VPS, and provides secure API endpoints for chat interaction, content summarization, reminder scheduling, and smart email replies.

🧠 Core Capabilities

🤖 AI-Powered Chat Agent

Integrates with Gemini to engage in natural human conversations
Used by the mobile client (React Native app) to simulate intelligent dialogue

📩 Email Monitoring & Smart Reply

Monitors a designated email inbox
Uses Gemini AI to analyze incoming emails and automatically generate context-aware replies

📝 Summarization Services

Text Summarization: Compress long user input into concise summaries
File Summarization: Handles uploaded .txt, .pdf, .jpeg, .png files
Image Summarization: Converts image content (OCR or direct description) into textual summaries

⏰ Smart Reminders

Schedule reminders via chat
Stores reminders in the database with cron-job-based execution (or background task processor)

⚙️ Tech Stack

Node.js + Express (REST API)
MongoDB (Mongoose for data modeling)
JWT for secure API auth
Firebase Admin SDK (for auth & push notifications)
Multer for file uploads
Gemini (LLM API) integration for AI tasks

📁 Folder Structure

aiva-backend/
├── controllers/       # Handle route logic
├── routes/            # API route definitions
├── services/          # Business logic: AI, email, reminders, summarization
├── middleware/        # Auth, error handlers
├── models/            # MongoDB schemas (Chat, User, Reminder, etc)
├── utils/             # Helper functions
└── server.js          # Entry point

🔐 Environment Variables (.env)

PORT=5000
MONGO_URI=your-mongodb-uri
JWT_SECRET=your-secret
EMAIL_USER=youremail@example.com
EMAIL_PASS=your-email-password-or-app-password
GEMINI_API_KEY=your-gemini-api-key

🚀 Getting Started

1. Install dependencies

npm install

2. Run the server

npm run dev  # for development

3. Test API endpoints

Use tools like Postman or Insomnia to test endpoints like:
POST /api/chat/interact
POST /api/summarize/text
POST /api/summarize/file
POST /api/reminder
GET /api/email/monitor

🌐 Deployment

Hosted on a DigitalOcean droplet (Ubuntu server)
PM2 used for process management
Nginx used as a reverse proxy

🤝 Contributions

This is a closed-source project for now. For collaboration or inquiries, contact the author below.

👤 Author

Md Aabid Hussain GitHub: github.com/aabidhussain

0 likes · 9 views · Jul 16, 2025

Developed AI backend for Aiva app using Node.js and Gemini model.

Timeline

Jun 4, 2025 - Jul 23, 2025

Tags