design/chat_interface.md

# Chat Interface Design

This document outlines the design for the chat interface of our Norwegian RAG-based chatbot. The interface will be implemented using Gradio and deployed on Hugging Face Spaces.

## Interface Requirements

### Functional Requirements

1. **Chat Interaction**:
   - Text input field for user queries
   - Response display area for chatbot answers
   - Support for multi-turn conversations
   - Message history display

2. **Document Management**:
   - Document upload functionality
   - Document list display
   - Status indicators for processing

3. **Configuration Options**:
   - Model selection (if multiple models are supported)
   - Language selection (Norwegian/English toggle)
   - Advanced parameters adjustment (optional)

4. **Embedding Functionality**:
   - Code snippet generation for embedding
   - Preview of embedded widget
   - Copy-to-clipboard functionality

### Non-Functional Requirements

1. **Responsiveness**:
   - Mobile-friendly design
   - Adaptive layout for different screen sizes

2. **Performance**:
   - Efficient loading times
   - Progress indicators for long operations
   - Streaming responses for better user experience

3. **Accessibility**:
   - WCAG 2.1 compliance
   - Keyboard navigation support
   - Screen reader compatibility

4. **Multilingual Support**:
   - Norwegian as primary language
   - English as secondary language
   - Language detection and switching

## UI Design

### Main Chat Interface

```
┌─────────────────────────────────────────────────────────────┐
│ Norwegian RAG Chatbot                                [🇳🇴/🇬🇧] │
├─────────────────────────────────────────────────────────────┤
│                                                             │
│  ┌─────────────────────────────────────────────────────┐   │
│  │                                                     │   │
│  │                 Chat History Display                │   │
│  │                                                     │   │
│  │  ┌─────────────────────────────────────────────┐   │   │
│  │  │ Bot: Hei! Hvordan kan jeg hjelpe deg i dag? │   │   │
│  │  └─────────────────────────────────────────────┘   │   │
│  │                                                     │   │
│  │  ┌─────────────────────────────────────────────┐   │   │
│  │  │ User: Fortell meg om norsk historie.        │   │   │
│  │  └─────────────────────────────────────────────┘   │   │
│  │                                                     │   │
│  │  ┌─────────────────────────────────────────────┐   │   │
│  │  │ Bot: Norsk historie strekker seg...         │   │   │
│  │  └─────────────────────────────────────────────┘   │   │
│  │                                                     │   │
│  └─────────────────────────────────────────────────────┘   │
│                                                             │
│  ┌─────────────────────────────────────────────────────┐   │
│  │ Type your message...                        [Send]  │   │
│  └─────────────────────────────────────────────────────┘   │
│                                                             │
│  [Clear Chat]  [Settings]  [Upload Documents]  [Embed]     │
└─────────────────────────────────────────────────────────────┘
```

### Document Upload Interface

```
┌─────────────────────────────────────────────────────────────┐
│ Document Management                                [Close]  │
├─────────────────────────────────────────────────────────────┤
│                                                             │
│  [Upload New Document]                                      │
│                                                             │
│  ┌─────────────────────────────────────────────────────┐   │
│  │ Document List                                       │   │
│  │                                                     │   │
│  │  ┌─────────────────────────────────────────────┐   │   │
│  │  │ norsk_historie.pdf                [Remove]  │   │   │
│  │  │ Status: Processed ✓                         │   │   │
│  │  └─────────────────────────────────────────────┘   │   │
│  │                                                     │   │
│  │  ┌─────────────────────────────────────────────┐   │   │
│  │  │ vikinger.docx                    [Remove]   │   │   │
│  │  │ Status: Processing... 75%                   │   │   │
│  │  └─────────────────────────────────────────────┘   │   │
│  │                                                     │   │
│  └─────────────────────────────────────────────────────┘   │
│                                                             │
│  [Process All]  [Remove All]                                │
└─────────────────────────────────────────────────────────────┘
```

### Embed Code Interface

```
┌─────────────────────────────────────────────────────────────┐
│ Embed Chatbot                                      [Close]  │
├─────────────────────────────────────────────────────────────┤
│                                                             │
│  ┌─────────────────────────────────────────────────────┐   │
│  │ Embed Code (iFrame)                                 │   │
│  │                                                     │   │
│  │  <iframe src="https://huggingface.co/spaces/...     │   │
│  │                                                     │   │
│  └─────────────────────────────────────────────────────┘   │
│                                                             │
│  [Copy to Clipboard]                                        │
│                                                             │
│  ┌─────────────────────────────────────────────────────┐   │
│  │ Embed Code (JavaScript Widget)                      │   │
│  │                                                     │   │
│  │  <script src="https://huggingface.co/spaces/...     │   │
│  │                                                     │   │
│  └─────────────────────────────────────────────────────┘   │
│                                                             │
│  [Copy to Clipboard]                                        │
│                                                             │
│  ┌─────────────────────────────────────────────────────┐   │
│  │                 Preview                             │   │
│  │                                                     │   │
│  │                                                     │   │
│  └─────────────────────────────────────────────────────┘   │
└─────────────────────────────────────────────────────────────┘
```

## Implementation with Gradio

Gradio is an ideal choice for implementing this interface due to its simplicity, Python integration, and native support on Hugging Face Spaces.

### Core Components

1. **Chat Interface**:
   ```python
   with gr.Blocks() as demo:
       chatbot = gr.Chatbot()
       msg = gr.Textbox(label="Message")
       clear = gr.Button("Clear")
       
       def respond(message, chat_history):
           # RAG processing logic here
           bot_message = get_rag_response(message)
           chat_history.append((message, bot_message))
           return "", chat_history
       
       msg.submit(respond, [msg, chatbot], [msg, chatbot])
       clear.click(lambda: None, None, chatbot, queue=False)
   ```

2. **Document Upload**:
   ```python
   with gr.Tab("Upload Documents"):
       file_output = gr.File()
       upload_button = gr.UploadButton("Click to Upload a File", file_types=["pdf", "docx", "txt"])
       
       def upload_file(file):
           # Document processing logic here
           process_document(file.name)
           return file.name
       
       upload_button.upload(upload_file, upload_button, file_output)
   ```

3. **Embedding Code Generation**:
   ```python
   with gr.Tab("Embed"):
       iframe_code = gr.Textbox(label="iFrame Embed Code")
       js_code = gr.Textbox(label="JavaScript Widget Code")
       
       def generate_embed_code():
           iframe = f'<iframe src="{SPACE_URL}" width="100%" height="500px"></iframe>'
           js = f'<script src="{SPACE_URL}/widget.js"></script>'
           return iframe, js
       
       embed_button = gr.Button("Generate Embed Code")
       embed_button.click(generate_embed_code, None, [iframe_code, js_code])
   ```

## Norwegian Language Support

1. **Interface Localization**:
   - Implement language switching functionality
   - Store UI text in language-specific dictionaries
   - Apply translations based on selected language

2. **Input Processing**:
   - Handle Norwegian special characters correctly
   - Implement Norwegian-specific text normalization

3. **Response Generation**:
   - Ensure proper formatting of Norwegian text
   - Handle Norwegian grammar and syntax correctly

## Responsive Design

1. **CSS Customization**:
   ```python
   with gr.Blocks(css="""
       @media (max-width: 600px) {
           .container { padding: 5px; }
           .input-box { font-size: 14px; }
       }
   """) as demo:
       # Interface components
   ```

2. **Layout Adaptation**:
   - Use flexible layouts that adapt to screen size
   - Implement collapsible sections for mobile view
   - Ensure touch-friendly UI elements

## Deployment on Hugging Face Spaces

1. **Space Configuration**:
   - Create a `requirements.txt` file with all dependencies
   - Set up appropriate environment variables
   - Configure resource allocation

2. **Continuous Integration**:
   - Set up GitHub repository for the project
   - Configure automatic deployment to Hugging Face Spaces
   - Implement version control for the interface

3. **Monitoring and Analytics**:
   - Add usage tracking
   - Implement error logging
   - Set up performance monitoring

## Next Steps

1. Implement the basic chat interface with Gradio
2. Add document upload and processing functionality
3. Create embedding code generation feature
4. Implement responsive design and language switching
5. Deploy to Hugging Face Spaces for testing
6. Gather feedback and iterate on the design