🧠 NoteMind AI

AI-powered notes application built with Spring Boot + PostgreSQL with a planned Android client.

NoteMind AI focuses on building a modern notes platform with AI-powered features, secure authentication, intelligent search, and scalable backend architecture.

---

🚀 Features

🔐 Authentication

• JWT based authentication
• Secure password encryption using BCrypt
• Stateless Spring Security architecture
• Multi-user support
• User-specific private notes

---

📝 Smart Notes

• Create notes
• Update notes
• Delete notes
• Add title and content
• Upload note images
• Store images using Cloudinary

---

🤖 AI Features

Automatic Summary Generation

NoteMind AI uses external AI services to generate summaries from long notes.

Powered by:

• Google AI API
• OpenRouter AI API

---

🖼️ Image Support

Notes support image attachments with cloud storage.

Flow:

Application
     |
     v
Cloudinary
     |
     v
Image URL
     |
     v
PostgreSQL

Features:

• Image upload
• Cloud storage
• URL persistence
• Media handling

---

🔎 Full Text Search

Implemented using PostgreSQL Full Text Search.

Uses:

• tsvector
• tsquery
• GIN indexing

Search works across:

• Title
• Content
• AI generated summaries

---

🏗️ Architecture

Client
  |
  v
Spring Boot REST API
  |
  +---- Spring Security (JWT)
  |
  +---- AI Service
  |
  +---- Cloudinary Storage
  |
  +---- PostgreSQL Database

---

🛠️ Tech Stack

Backend

• Java 21
• Spring Boot
• Spring Security
• Spring Data JPA
• Hibernate

Database

• PostgreSQL
• PostgreSQL Full Text Search

AI Integration

• Google AI API
• OpenRouter API

Storage

• Cloudinary

Authentication

• JWT

Build Tool

• Gradle

Android Client (Planned)

• Kotlin
• Jetpack Compose

---

⚙️ Configuration

Before running the project, configure these environment variables.

Database

DB_URL
DB_USERNAME
DB_PASSWORD

Example:

DB_URL=jdbc:postgresql://localhost:5432/notemind_ai
DB_USERNAME=postgres
DB_PASSWORD=your_password

---

JWT

JWT_SECRET_KEY

---

AI Configuration

GOOGLE_API_KEY
OPENROUTER_API_KEY

---

Cloudinary

CLOUD_NAME_CLOUDINARY
CLOUD_API_KEY_CLOUDINARY
CLOUD_API_SECRET_CLOUDINARY

---

▶️ Run Application

Using Gradle:

./gradlew bootRun

Application starts at:

http://localhost:8080/api/v1

---

🔮 Future Improvements

• Android application using Kotlin and Jetpack Compose
• AI chat with notes
• Voice notes
• Markdown editor
• Note sharing
• Real-time collaboration
• Redis caching
• Elasticsearch integration

---

👨‍💻 Author

Dhaliwal

CSE Student

---

⭐ Built with Java, Spring Boot, PostgreSQL & AI