team-2/CHALLENGE_2/sleepysound/README_SPOTIFY.md

# 🎵 SleepySound - Spotify Integration Setup

## Quick Start

The app now loads Spotify credentials from `lib/services/SPOTIFY_SECRET.dart`. You have two options:

### Option 1: Demo Mode (Works Immediately) 
- The app works perfectly with realistic demo data
- No setup required - just run the app!
- All features work: search, voting, queue management

### Option 2: Real Spotify Integration

1. **Get Spotify API Credentials:**
   - Go to [Spotify Developer Dashboard](https://developer.spotify.com/dashboard)
   - Create a new app called "SleepySound"
   - Copy your Client ID and Client Secret

2. **Update the Secret File:**
   ```dart
   // In lib/services/SPOTIFY_SECRET.dart
   class SpotifyCredentials {
     static const String clientId = 'your_actual_client_id_here';
     static const String clientSecret = 'your_actual_client_secret_here';
   }
   ```

3. **Run the App:**
   - The app automatically detects valid credentials
   - Real Spotify search will be enabled
   - You'll see "🎵 Spotify" instead of "🎮 Demo" in the UI

## How It Works

### 🔄 Automatic Credential Detection
```dart
// The service automatically checks for valid credentials
bool get _hasValidCredentials => 
    _clientId != 'YOUR_SPOTIFY_CLIENT_ID' && 
    _clientSecret != 'YOUR_SPOTIFY_CLIENT_SECRET';
```

### 🎮 Graceful Fallback
- **Invalid/Missing Credentials** → Demo data
- **Valid Credentials** → Real Spotify API
- **API Errors** → Falls back to demo data

### 🎯 Visual Indicators
- **"🎵 Spotify"** badge = Real API active
- **"🎮 Demo"** badge = Using demo data
- Console logs show configuration status

## Features

### ✅ Working Now (Demo Mode)
- Song search with realistic results
- Upvote/downvote queue management
- Real-time queue reordering
- Album artwork simulation
- Location-based group features

### ✅ Enhanced with Real Spotify
- Actual Spotify track search
- Real album artwork
- Accurate track metadata
- External Spotify links
- Preview URLs (where available)

## Security Notes

⚠️ **Important:** Never commit real credentials to version control!

```bash
# Add this to .gitignore
lib/services/SPOTIFY_SECRET.dart
```

For production apps:
- Use environment variables
- Use secure credential storage
- Implement proper OAuth flows

## File Structure

```
lib/
├── services/
│   ├── spotify_service.dart      # Main Spotify API service
│   └── SPOTIFY_SECRET.dart       # Your credentials (gitignored)
├── models/
│   └── spotify_track.dart        # Spotify data models
└── pages/
    ├── voting_page.dart          # Search & voting interface
    ├── now_playing_page.dart     # Current queue display
    └── group_page.dart           # Location & group features
```

## API Integration Details

### Client Credentials Flow
- Used for public track search (no user login required)
- Perfect for the collaborative jukebox use case
- Handles token refresh automatically

### Search Functionality
```dart
// Real Spotify search
final tracks = await _spotifyService.searchTracks('summer vibes', limit: 10);

// Automatic fallback to demo data if API unavailable
```

### Error Handling
- Network errors → Demo data
- Invalid credentials → Demo data  
- Rate limiting → Demo data
- Token expiration → Automatic refresh

## Challenge Requirements ✅

- ✅ **Music streaming API integration** - Spotify Web API
- ✅ **Track metadata retrieval** - Full track info + artwork
- ✅ **Demo-ready functionality** - Works without setup
- ✅ **Real-world usability** - Graceful fallbacks

## Development Tips

1. **Start with Demo Mode** - Get familiar with the app
2. **Add Real Credentials** - See the enhanced experience
3. **Test Both Modes** - Ensure fallbacks work
4. **Check Console Logs** - See API status messages

Enjoy building your collaborative music experience! 🎶