🤖 Smart Chatbot System

A simple Spring Boot-based AI chatbot integrated with Google's Gemini API and a responsive Bootstrap UI.

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📁 Project Structure

src/
├── main/
│   ├── java/com/ai/chatbot/
│   │   ├── SmartChatbotSystemApplication.java    # Main application class
│   │   ├── config/CorsConfig.java                # CORS setup
│   │   ├── controller/ChatController.java        # REST controller
│   │   ├── model/ChatRequest.java, ChatResponse.java
│   │   └── service/ChatService.java              # Gemini API integration logic
│   └── resources/
│       └── application.properties                # API key stored here

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🔑 Gemini API Integration

• Model: gemini-2.0-flash
• API Endpoint:
  https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:generateContent?key=YOUR_API_KEY
• API Key is read from application.properties:

gemini.api.key=your-gemini-api-key

• Sample Request Payload (from service layer):

{
  "contents": [
    {
      "parts": [
        { "text": "Your message here..." }
      ]
    }
  ]
}

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🌐 User Interface (UI)

• Built using plain HTML + Bootstrap 5
• Responsive, dark-themed layout
• User messages align right (with "You:" label)
• Bot replies align left
• Chat auto-scrolls as new messages appear
• Simple input and "Send" button trigger POST to /api/chat

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🧪 Running the App

1. Add your API key to application.properties
2. Run with:

   ./mvnw spring-boot:run

   or run on IDE.
3. Open index.html in browser to chat

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