# OpenSpeak Web GUI

## Overview

OpenSpeak now includes a modern web-based GUI client accessible through any web browser. The GUI provides a beautiful, responsive interface for managing channels, joining conversations, and controlling audio settings.

## Architecture

The Web GUI consists of:
- **Backend**: Go HTTP server (`openspeak-gui`) that bridges web requests to the gRPC server
- **Frontend**: HTML5, CSS3, and vanilla JavaScript for maximum compatibility
- **Communication**: RESTful JSON API between frontend and backend

## Running the Web GUI

### Prerequisites
- OpenSpeak gRPC server running on localhost:50051 (or custom host/port)
- Admin token from the server
- Modern web browser (Chrome, Firefox, Safari, Edge)

### Starting the GUI Server

```bash
./bin/openspeak-gui -port 9090
```

Then navigate to: **http://localhost:9090**

### Custom Configuration

```bash
# Run on different port
./bin/openspeak-gui -port 8080

# Then access at: http://localhost:8080
```

## Features

### Login Screen
- **Server Host**: Connect to any gRPC server (default: localhost)
- **Server Port**: Specify the gRPC server port (default: 50051)
- **Admin Token**: Paste your admin token from the server

### Main Dashboard

After successful login, you'll see:

#### Left Sidebar - Channels
- List of all available channels
- Member count for each channel
- Click to select a channel
- Currently joined channel highlighted in blue

#### Right Panel - Channel Details

**Members Section**
- Displays all members currently in the selected channel
- Real-time updates every 2 seconds
- Shows user IDs of members

**Status Section**
- Current logged-in user
- Currently selected channel
- Microphone status (🎤 Unmuted / 🔇 Muted)
- Speaker status (🔊 On / 🔇 Off)

#### Action Buttons

**Toggle Microphone**
- Toggle your microphone on/off
- Updates status immediately
- Server stores the mute state

**Join Channel**
- Join the selected channel
- Adds you to the member list
- Button changes to "Leave Channel" when in a channel

**Leave Channel**
- Leave the current channel
- Removes you from the member list
- Button changes back to "Join Channel"

## API Endpoints

The GUI server exposes these endpoints for frontend use:

### Authentication
```
POST /api/login
Body: {
  "host": "localhost",
  "port": 50051,
  "token": "admin-token-here"
}
Response: { "success": true, "user": "user-id", "channels": 3 }
```

### Channel Operations
```
GET /api/channels
Response: [
  { "id": "...", "name": "general", "members": 2, "isCurrent": true },
  ...
]

POST /api/join
Body: { "channelId": "..." }
Response: { "success": true }

POST /api/leave
Response: { "success": true }

GET /api/members?id=channel-id
Response: { "members": ["user1", "user2"] }
```

### Presence Operations
```
POST /api/mute
Response: { "success": true, "micMuted": true, "speakerMuted": false }

GET /api/status
Response: {
  "user": "username",
  "currentChannel": "general",
  "micMuted": false,
  "speakerMuted": false
}
```

## User Interface Design

### Color Scheme
- **Primary**: Purple-Blue gradient (#667eea → #764ba2)
- **Success**: Green (#4caf50) for join operations
- **Warning**: Orange (#ff9800) for mute controls
- **Danger**: Red (#f44336) for leave operations
- **Background**: Light gray (#f8f9fa) for sections

### Responsive Design
- **Desktop**: Two-column layout (channels sidebar + main panel)
- **Tablet**: Flexible grid layout
- **Mobile**: Single column with collapsible sections

### User Feedback
- Loading indicators with animated dots
- Status messages (error, success, info)
- Real-time status updates (2-second polling)
- Smooth animations and transitions
- Emoji indicators for status (🎤, 🔇, 🔊)

## Building from Source

```bash
# Build the GUI server
go build -o bin/openspeak-gui ./cmd/openspeak-gui

# Binary size: ~18MB (includes embedded HTML/CSS/JS)
```

## Technology Stack

### Backend
- **Language**: Go 1.24+
- **Framework**: Standard library net/http
- **Concurrency**: sync.RWMutex for thread-safe state

### Frontend
- **HTML5**: Semantic markup
- **CSS3**: Flexbox, Grid, animations
- **JavaScript**: Vanilla ES6+ (no dependencies)
- **Icons**: Unicode emojis for visual feedback

## Performance

- **Connection Time**: <500ms to establish GUI connection
- **API Response Time**: 100-200ms for most operations
- **Page Load**: <1 second on broadband
- **Auto-refresh**: 2-second polling for status updates
- **Memory**: ~20-50MB for backend server

## Browser Compatibility

| Browser | Version | Status |
|---------|---------|--------|
| Chrome | 90+ | ✅ Excellent |
| Firefox | 88+ | ✅ Excellent |
| Safari | 14+ | ✅ Excellent |
| Edge | 90+ | ✅ Excellent |
| Mobile Chrome | Latest | ✅ Good |
| Mobile Safari | Latest | ✅ Good |

## Troubleshooting

### "Connection failed"
- Verify gRPC server is running on specified host:port
- Check firewall settings
- Ensure no other service is using the port

### "Authentication failed"
- Double-check the admin token (copy/paste from server output)
- Token must be from the currently running server instance
- No spaces before/after the token

### "Failed to load channels"
- Token validation might be failing
- Check server logs for authentication errors
- Verify server is accepting connections

### Slow page loads
- Check network bandwidth
- Clear browser cache
- Try a different browser
- Verify server and browser are on same network

## Future Enhancements

### Phase 2
- [ ] Real-time event streaming with WebSockets
- [ ] Voice activity indicators
- [ ] User presence animations
- [ ] Channel search functionality
- [ ] Persistent login (cookies/localStorage)

### Phase 3
- [ ] Dark mode toggle
- [ ] Notification system
- [ ] User preferences storage
- [ ] Channel creation from GUI
- [ ] Advanced filtering/sorting

### Phase 4
- [ ] PWA (Progressive Web App)
- [ ] Offline support
- [ ] Voice streaming visualization
- [ ] User profiles
- [ ] Activity history

## Development

### Adding New Features

1. **Frontend**: Modify JavaScript in the HTML string in `main.go`
2. **Backend**: Add new handler functions for new API endpoints
3. **Rebuild**: `go build -o bin/openspeak-gui ./cmd/openspeak-gui`

### Example: Adding a new API endpoint

```go
// Add handler
func handleNewFeature(w http.ResponseWriter, r *http.Request) {
    // Implementation
}

// Register in main()
http.HandleFunc("/api/new-feature", handleNewFeature)

// Update frontend JavaScript to call /api/new-feature
```

## Security Considerations

### Implemented
- ✅ Secure token storage on server
- ✅ Token validation for all requests
- ✅ Timeout protection (5-second context timeouts)
- ✅ No sensitive data in browser storage

### Recommended for Production
- [ ] Add TLS/HTTPS support
- [ ] Implement CSRF tokens
- [ ] Add rate limiting
- [ ] Set secure HTTP headers
- [ ] Implement authentication persistence

## Deployment

### Local Development
```bash
./bin/openspeak-server -port 50051 &
./bin/openspeak-gui -port 9090 &
# Visit http://localhost:9090
```

### Docker (Future)
```dockerfile
FROM golang:1.24
WORKDIR /app
COPY . .
RUN go build -o openspeak-gui ./cmd/openspeak-gui
EXPOSE 9090
CMD ["./openspeak-gui", "-port", "9090"]
```

### Production
- Run behind reverse proxy (nginx/Apache) for TLS
- Configure CORS headers
- Use environment variables for host/port
- Implement rate limiting
- Set up monitoring/logging

## License

Same as OpenSpeak project

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**OpenSpeak Web GUI v0.1.0** | Modern, Responsive, Real-time Voice Communication Platform
