SkillLoop AI 🚀

AI-powered learning platform that helps students generate study guides, learn from PDFs, practice AI-based viva interviews, and track learning performance.

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📌 Features

🔐 Authentication

• User Registration
• User Login
• JWT Token Authentication
• BCrypt Password Encryption
• Protected API Endpoints

📚 Study Guide Generator

• AI-generated Study Guides
• Topic-based Question Generation
• Difficulty-based Learning
• Study Session History Tracking

📄 PDF Learning

• PDF Upload
• PDF Text Extraction using Apache PDFBox
• AI-generated Questions from PDFs
• PDF Study Session History

🎤 AI Viva

• Viva Question Generation
• AI-based Answer Evaluation
• Feedback Generation
• Performance Scoring
• Viva History Tracking

📊 Dashboard Analytics

• Total Study Sessions
• Total PDF Sessions
• Total Viva Attempts
• Average Performance Score
• Learning Analytics

📖 API Documentation

• Swagger UI Integration
• OpenAPI 3 Documentation
• Interactive API Testing

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🏗️ System Architecture

Frontend (React - Planned)

⬇️

REST APIs (Spring Boot)

⬇️

Service Layer

⬇️

Repository Layer (JPA)

⬇️

PostgreSQL Database

⬇️

External AI Services

• Google Gemini API
• Hugging Face API

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🛠️ Tech Stack

Backend

• Java 17
• Spring Boot 3.5
• Spring Security
• Spring Data JPA
• Hibernate ORM
• REST APIs
• Maven

Authentication & Security

• JWT Authentication
• BCrypt Password Encoder
• Stateless Session Management

Database

• PostgreSQL

AI & NLP

• Google Gemini API
• Hugging Face Inference API

PDF Processing

• Apache PDFBox

Documentation

• Swagger UI
• OpenAPI 3

Development Tools

• IntelliJ IDEA
• Postman
• Git
• GitHub

Design Patterns & Architecture

• Controller-Service-Repository Architecture
• DTO Pattern
• Dependency Injection
• Entity Relationship Mapping (JPA)

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📂 Project Structure

skillloop-ai
│
├── Backend
│   ├── config
│   ├── controller
│   ├── dto
│   ├── entity
│   ├── repository
│   ├── service
│   ├── exception
│   └── resources
│
├── frontend (Coming Soon)
│
├── docs
│
└── README.md

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🗄️ Database Tables

Table Name	Description
users	User Accounts
study_sessions	Study History
pdf_study_sessions	Uploaded PDF Sessions
pdf_questions	Generated PDF Questions
viva_results	Viva Evaluation Results

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⚙️ Setup & Installation

Clone Repository

git clone https://github.com/Abhi-T-A/skillloop-ai.git

Navigate to Backend

cd Backend

Configure PostgreSQL

Create Database:

CREATE DATABASE skillloop_ai;

Update application.properties:

spring.datasource.url=jdbc:postgresql://localhost:5432/skillloop_ai
spring.datasource.username=postgres
spring.datasource.password=YOUR_PASSWORD

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▶️ Run Application

./mvnw spring-boot:run

Or

mvn spring-boot:run

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📖 API Documentation

Swagger UI:

http://localhost:8080/swagger-ui/index.html

OpenAPI JSON:

http://localhost:8080/v3/api-docs

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🔗 API Modules

Auth APIs

• Register User
• Login User
• JWT Authentication

Study APIs

• Generate Study Guides
• View Study History

PDF APIs

• Upload PDF
• Extract PDF Content
• Generate Questions
• View PDF History

Viva APIs

• Start Viva Session
• Evaluate Answers
• View Viva History
• Performance Analytics

Dashboard APIs

• Learning Analytics
• User Performance Overview

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✅ Completed Backend Features

• JWT Authentication
• User Management
• PostgreSQL Integration
• AI Study Guide Generator
• PDF Processing
• AI Viva Evaluation
• Dashboard Analytics
• Swagger Documentation
• Global Exception Handling
• Layered Architecture

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🚀 Future Enhancements

• React Frontend
• Refresh Token Authentication
• Role-Based Access Control (RBAC)
• Docker Support
• CI/CD Pipeline
• AWS Deployment
• User Profile Management
• Study Progress Tracking
• AI Learning Recommendations

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👨‍💻 Author

Abhi T A

Backend Developer | Java | Spring Boot | PostgreSQL | AI Integration

GitHub: https://github.com/Abhi-T-A

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⭐ Project Status

✅ Backend Development Completed

✅ Authentication Implemented

✅ Database Integrated

✅ Swagger Documentation Ready

✅ APIs Tested Successfully

✅ Frontend Development (incompleted)