# AudioPlaybackKit

A Swift package for audio playback functionality, specifically designed for white noise and ambient sound applications.

## Features

- **Audio Playback**: High-quality audio playback with background support
- **Sound Management**: Load and manage audio files from bundles
- **Wake Lock**: Prevent device from sleeping during audio playback
- **Interruption Handling**: Automatic handling of audio interruptions (calls, etc.)
- **Configuration**: JSON-based sound configuration system
- **Preview Support**: Built-in audio preview functionality

## Requirements

- iOS 16.0+ / macOS 13.0+
- Swift 5.9+

## Installation

### Swift Package Manager

Add the following to your `Package.swift` file:

```swift
dependencies: [
    .package(url: "https://github.com/yourusername/AudioPlaybackKit.git", from: "1.0.0")
]
```

Or add it through Xcode:
1. File → Add Package Dependencies
2. Enter the repository URL
3. Select the version and add to your target

## Usage

### Basic Audio Playback

```swift
import AudioPlaybackKit

// Get the shared player instance
let player = NoisePlayer.shared

// Create a sound
let sound = Sound(
    name: "White Noise",
    fileName: "white-noise.mp3",
    category: "ambient",
    description: "Classic white noise"
)

// Play the sound
player.playSound(sound)

// Stop the sound
player.stopSound()
```

### Using the ViewModel

```swift
import AudioPlaybackKit

// Create a view model
let viewModel = NoiseViewModel()

// Get available sounds
let sounds = viewModel.availableSounds

// Play a sound
viewModel.playSound(sounds.first!)

// Preview a sound (3 seconds)
viewModel.previewSound(sounds.first!)

// Stop playback
viewModel.stopSound()
```

### Sound Configuration

Create a `sounds.json` file in your app bundle:

```json
{
  "sounds": [
    {
      "id": "white-noise",
      "name": "White Noise",
      "fileName": "white-noise.mp3",
      "category": "ambient",
      "description": "Classic white noise for focus and relaxation",
      "bundleName": "Ambient"
    }
  ],
  "categories": [
    {
      "id": "ambient",
      "name": "Ambient",
      "description": "General ambient sounds",
      "bundleName": "Ambient"
    }
  ],
  "settings": {
    "defaultVolume": 0.8,
    "defaultLoopCount": -1,
    "preloadSounds": true,
    "preloadStrategy": "category",
    "audioSessionCategory": "playback",
    "audioSessionMode": "default",
    "audioSessionOptions": ["mixWithOthers"]
  }
}
```

### Wake Lock Service

```swift
import AudioPlaybackKit

let wakeLock = WakeLockService.shared

// Enable wake lock (prevents device from sleeping)
wakeLock.enableWakeLock()

// Disable wake lock
wakeLock.disableWakeLock()

// Check if active
if wakeLock.isActive {
    print("Wake lock is active")
}
```

## Architecture

### Core Components

- **NoisePlayer**: Main audio playback service
- **SoundConfigurationService**: Manages sound configuration and loading
- **WakeLockService**: Prevents device from sleeping during playback
- **NoiseViewModel**: SwiftUI-friendly view model for audio playback

### Models

- **Sound**: Represents an audio file with metadata
- **SoundConfiguration**: JSON configuration structure
- **AudioSettings**: Audio session and playback settings

## License

This package is available under the MIT license. See the LICENSE file for more info.

## Contributing

Contributions are welcome! Please feel free to submit a Pull Request.