# TikTok Video Player

A complete TikTok-style video player built from deobfuscated TikTok source code. Features infinite scroll, video controls, comments system, and privacy compliance - all with just React and Tailwind CSS.

## 🚀 Features

### Core Video Player
- ✅ **HTML5 Video Player** with custom controls
- ✅ **Infinite Scroll** with snap-to-video behavior
- ✅ **Auto-play/Pause** based on viewport visibility
- ✅ **Keyboard Navigation** (Space, Arrow keys, M for mute)
- ✅ **Progress Bar** with click-to-seek
- ✅ **Volume Control** and mute functionality
- ✅ **WebVTT Subtitles** support with parsing
- ✅ **Video Preloading** and memory management

### UI Components
- ✅ **Action Bar** (Like, Comment, Share, Bookmark, Follow)
- ✅ **Video Metadata** with hashtag/mention parsing
- ✅ **User Avatars** with verification badges
- ✅ **Loading States** and error handling
- ✅ **Navigation Indicators** (side dots)
- ✅ **Responsive Design** for mobile and desktop

### Advanced Features
- ✅ **Mock Data System** for testing
- ✅ **Analytics Tracking** hooks
- ✅ **Comment System** (placeholder implementation)
- ✅ **Share Functionality** with clipboard copy
- ✅ **Performance Optimized** with throttled scroll events
- ✅ **Accessibility** with ARIA labels and keyboard support

## 📦 Installation

```bash
# Install dependencies
npm install

# Start development playground
npm run playground

# Build the library
npm run build

# Preview the built library
npm run preview
```

## 🎮 Playground

The playground demonstrates all features with mocked video data:

```bash
npm run playground
```

Open [http://localhost:3000](http://localhost:3000) to see the player in action.

### Keyboard Shortcuts
- **Space**: Play/Pause current video
- **↑/↓**: Navigate between videos
- **M**: Mute/Unmute audio

## 🔧 Usage

### Basic Implementation

```tsx
import React from 'react';
import { VideoFeed, generateMockVideos } from 'tiktok-video-player';

function App() {
  const videos = generateMockVideos(20);

  return (
    <VideoFeed
      videos={videos}
      onLoadMore={() => {
        // Load more videos from your API
      }}
      onVideoChange={(index) => {
        // Track video views
        console.log('Video changed to:', index);
      }}
      onLike={(videoId) => {
        // Handle like action
        console.log('Liked video:', videoId);
      }}
    />
  );
}
```

### With Mux Integration

```tsx
import { VideoFeed } from 'tiktok-video-player';
import { VideoItem } from 'tiktok-video-player/types';

// Convert Mux data to VideoItem format
const convertMuxToVideoItem = (muxAsset: any): VideoItem => ({
  id: muxAsset.id,
  video: {
    playAddr: `https://stream.mux.com/${muxAsset.playback_ids[0].id}.m3u8`,
    duration: muxAsset.duration,
    width: 720,
    height: 1280,
    ratio: '9:16'
  },
  author: {
    // Your user data
  },
  stats: {
    // Your video stats
  },
  // ... other properties
});

function MuxVideoFeed({ muxAssets }: { muxAssets: any[] }) {
  const videos = muxAssets.map(convertMuxToVideoItem);
  
  return <VideoFeed videos={videos} />;
}
```

### Custom Video Source

```tsx
import { VideoFeed } from 'tiktok-video-player';

const customVideos = [
  {
    id: 'video_1',
    video: {
      playAddr: 'https://your-cdn.com/video1.mp4',
      duration: 30,
      width: 720,
      height: 1280
    },
    author: {
      nickname: 'Creator Name',
      uniqueId: 'creator_username',
      avatarThumb: 'https://your-cdn.com/avatar.jpg'
    },
    stats: {
      diggCount: 1200,
      commentCount: 45,
      shareCount: 23
    },
    desc: 'Check out this amazing video! #awesome #content'
  }
];

<VideoFeed videos={customVideos} />
```

## 🏗️ Architecture

Based on deobfuscated TikTok source code, the player uses:

### State Management
- **Video Detail Atom**: Central video state management
- **Swiper Mode State**: Navigation and interaction state
- **Comment State**: Comment system with ML preloading
- **Privacy State**: Cookie consent and network monitoring

### Core Hooks
- `useVideoPlayer`: Video playback control and state
- `useInfiniteScroll`: Infinite scroll with preloading
- Custom hooks for analytics and privacy compliance

### Components
- `VideoFeed`: Main container with infinite scroll
- `VideoPlayer`: HTML5 video with custom controls
- `VideoActionBar`: Like, comment, share buttons
- `VideoMetadata`: Author info and description parsing

## 🎨 Styling

Built with Tailwind CSS and includes TikTok's design system:

```css
/* TikTok brand colors */
--tiktok-red: #FE2C55;
--tiktok-blue: #25F4EE;
--tiktok-dark: #161823;

/* Custom animations */
.animate-spin-slow: 3s linear infinite;
.backdrop-blur-xs: blur(2px);
```

## 📱 Mobile Support

- Touch gestures for navigation
- Responsive design for all screen sizes
- iOS/Android video playback optimization
- PWA-ready with proper meta tags

## 🔒 Privacy & Security

Implements TikTok's Privacy and Network Security (PNS) system:

- Cookie consent management
- Network request interception
- Web API monitoring (geolocation, camera, etc.)
- GDPR/CCPA compliance features

## 🧪 Testing

The playground includes:
- 50+ mock videos with realistic data
- Simulated API loading delays
- Error state demonstrations
- Analytics event logging
- Performance monitoring

## 📊 Analytics Integration

Built-in hooks for tracking:

```tsx
const handleVideoChange = (index: number) => {
  // Track video views
  analytics.track('video_view', {
    video_id: videos[index].id,
    video_index: index,
    timestamp: Date.now()
  });
};

const handleLike = (videoId: string) => {
  // Track engagement
  analytics.track('video_like', {
    video_id: videoId,
    timestamp: Date.now()
  });
};
```

## 🔧 Configuration

### Video Player Options
```tsx
interface VideoPlayerOptions {
  autoplay?: boolean;        // Auto-play videos (default: true)
  muted?: boolean;          // Start muted (default: true)
  loop?: boolean;           // Loop individual videos (default: true)
  preload?: 'none' | 'metadata' | 'auto';
  controls?: boolean;       // Show native controls (default: false)
}
```

### Infinite Scroll Options
```tsx
interface InfiniteScrollOptions {
  threshold?: number;       // Load more threshold (default: 0.8)
  preloadDistance?: number; // Videos to preload (default: 6)
  hasMore?: boolean;        // More content available
}
```

## 🚀 Performance

Optimizations based on TikTok's implementation:

- **Sparse Loading**: Only loads visible videos
- **Memory Management**: Cleans up off-screen videos
- **Throttled Events**: 100ms scroll event throttling
- **Preloading Strategy**: Smart content preloading
- **Video Optimization**: Metadata preloading only

## 📝 TypeScript Support

Full TypeScript support with comprehensive type definitions:

```tsx
import { 
  VideoItem, 
  VideoPlayerProps, 
  UseVideoPlayerReturn,
  CommentItem 
} from 'tiktok-video-player/types';
```

## 🤝 Contributing

1. Fork the repository
2. Create your feature branch (`git checkout -b feature/amazing-feature`)
3. Commit your changes (`git commit -m 'Add amazing feature'`)
4. Push to the branch (`git push origin feature/amazing-feature`)
5. Open a Pull Request

## 📄 License

MIT License - see [LICENSE](LICENSE) file for details.

## 🙏 Acknowledgments

Built from deobfuscated TikTok source code analysis. This implementation replicates TikTok's sophisticated video player architecture while being completely independent and open-source.

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**Note**: This is a reverse-engineered implementation for educational purposes. All TikTok trademarks belong to ByteDance Ltd.