🤖 MiniChatGPT

An AI-powered Full-stack Chat Application with secure authentication, persistent chat history, and intelligent conversations powered by Google Gemini API.

Built with React, Node.js, PostgreSQL, and deployed on Microsoft Azure using GitHub Actions CI/CD.

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📸 Preview

💬 Chat

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🛠 Admin Dashboard

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📱 Mobile

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✨ Features

• 🤖 AI-powered conversations using Google Gemini API
• 🔐 Secure JWT Authentication
• 💬 Persistent Conversation History
• 👤 User & Admin Dashboard
• 🛡 Role-Based Authorization
• ☁ Cloud-native deployment on Microsoft Azure
• ⚙ Automated CI/CD with GitHub Actions
• 📱 Fully Responsive Design
• 🌙 Dark / Light Theme
• ⚡ Smart Error Handling & Rate Limiting

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🏗 System Architecture

The application follows a cloud-native architecture on Microsoft Azure with automated CI/CD using GitHub Actions.

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Architecture Overview

• React + Vite frontend hosted on Azure Static Web Apps.
• Node.js + Express backend deployed on Azure Container Apps.
• Azure Database for PostgreSQL stores users, conversations, and messages.
• Azure Key Vault securely manages application secrets.
• Application Insights collects logs and telemetry.
• Google Gemini API provides AI-powered responses.
• GitHub Actions automates CI/CD deployments.

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🛠 Tech Stack

Frontend

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Backend

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Database

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Cloud & DevOps

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AI

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📂 Project Structure

MiniChatGPT
│
├── frontend/
│   ├── src/
│   ├── public/
│   └── package.json
│
├── backend/
│   ├── src/
│   ├── package.json
│   └── Dockerfile
│
├── database/
│   └── mini_chatgpt.sql
│
├── .github/
│   └── workflows/
│
└── README.md

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⚙ Environment Variables

Backend

DATABASE_URL=

JWT_SECRET=

GEMINI_API_KEY=

GEMINI_MODEL=

CLIENT_ORIGIN=

NODE_ENV=production

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Frontend

VITE_API_BASE_URL=

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🚀 Getting Started

Clone Repository

git clone https://github.com/vuth9808/MiniChatGPT_Main.git

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Backend

cd backend

npm install

npm run dev

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Frontend

cd frontend

npm install

npm run dev

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📡 REST API

Authentication

Method	Endpoint
POST	/register
POST	/login
POST	/logout

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Conversations

Method	Endpoint
GET	/conversations
POST	/conversations
GET	/conversations/:id
DELETE	/conversations/:id
POST	/conversations/:id/messages

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Admin

Method	Endpoint
GET	/users
DELETE	/users/:id

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🔒 Security

• JWT Authentication
• Password Hashing with bcrypt
• Parameterized SQL Queries
• Role-Based Authorization
• CORS Protection
• Rate Limiting
• Secure Cookies

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🚀 Deployment

The application is automatically deployed through GitHub Actions.

GitHub
      │
      ▼
GitHub Actions
      │
 ┌────┴────┐
 ▼         ▼
Azure Static Web Apps
Azure Container Apps
      │
      ▼
Azure Database for PostgreSQL

Every push to the main branch automatically triggers the deployment pipeline.

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📄 License

This project is licensed under the MIT License.

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👨‍💻 Author

To Hoang Vu

📧 tohoangvu161225@gmail.com

🌐 https://github.com/vuth9808