spotify-dart

spotify-dart

A Dart library for interfacing with the Spotify API.

Installation | Features | Quick Start | Authorization | Features & Bugs | Contributing

Installation

Add spotify to your pubspec.yaml:

dependencies:
  spotify: ^0.16.1

Alternatively, run

dart pub add spotify

and the latest version will be added automatically.

Finally, run dart pub get to install the package.

Features

This library provides comprehensive access to Spotify's Web API:

Core Content

• Artists - Get artist info, top tracks, related artists, and albums
• Tracks - Retrieve track details and metadata
• Albums - Access album information and track listings
• Playlists - Browse, get, create, and modify playlists
• Shows & Episodes - Full podcast support
• Search - Search across all content types (artists, tracks, albums, playlists, shows, episodes)
• Browse - Discover new releases, featured playlists, and categories
• Categories - Browse categories with market and locale support

User Features (requires authentication)

• User Profile - Access current user information via me endpoint
• Playback Control - Control playback, manage queue, get available devices
• Library Management - Manage saved tracks, albums, shows, and episodes
• User History - Access top items and recently played tracks
• Following - Follow/unfollow artists and users

Additional Capabilities

• Pagination - Efficient handling of large result sets with Pages<T> and CursorPages<T>
• Market Support - Country-specific content filtering
• Multiple Auth Flows - Client credentials and authorization code grant (with PKCE support)
• OAuth Scopes - Comprehensive authorization scope management

Note: Related Artists, Audio Features, Audio Analysis, Featured Playlists, Category Playlists and Recommendation endpoints are deprecated by Spotify but still available in this library.

Quick Start

Simple Example (Client Credentials)

import 'package:spotify/spotify.dart';

void main() async {
  final credentials = SpotifyApiCredentials(clientId, clientSecret);
  final spotify = SpotifyApi(credentials);

  // Get artist info
  final artist = await spotify.artists.get('0OdUWJ0sBjDrqHygGUXeCF');
  print(artist.name); // 'Band of Horses'

  // Search for tracks
  var search = await spotify.search.get('metallica').first(2);
  print(search.first.items); // List of albums, artists, tracks, etc.
}

Working with Pagination

Many endpoints return paginated results:

// Get all tracks from an album
var tracks = await spotify.albums.getTracks(albumId).all();

// Get first N items
var featured = await spotify.playlists.featured.first(5);

// Stream through pages
await for (var page in spotify.playlists.getUsersPlaylists(userId).stream()) {
  print(page.items);
}

Authorization

This library supports multiple authorization flows:

• Client Credentials Flow - For accessing public data (artists, albums, tracks, etc.)
• Authorization Code Grant - For accessing user data and controlling playback
• PKCE Support - Enhanced security for public clients

For detailed information on authorization flows, OAuth scopes, and advanced usage, see the wiki.

PKCE (Public Client) Authentication

For mobile apps and single-page applications that cannot securely store client secrets, use PKCE:

// Generate a secure code verifier
final verifier = SpotifyApi.generateCodeVerifier();

// Create PKCE credentials (no client secret needed!)
final credentials = SpotifyApiCredentials.pkce(
  'your-client-id',
  codeVerifier: verifier,
);

// Complete OAuth flow
final grant = SpotifyApi.authorizationCodeGrant(credentials);
final authUri = grant.getAuthorizationUrl(redirectUri, scopes: scopes);
// ... redirect user, get authorization code
final client = await grant.handleAuthorizationResponse(params);
final spotify = SpotifyApi.fromClient(client);

// Save credentials for later (including codeVerifier!)
final creds = await spotify.getCredentials();
// Store creds.codeVerifier along with other credential fields

// Restore later
final spotify = await SpotifyApi.asyncFromCredentials(restoredCreds);

See example/example_pkce.dart for a complete working example.

Features and bugs

Please file feature requests and bugs at the issue tracker.

Contributing

Contributions are welcome! Here's how to work on this project:

Development Setup

1. Clone the repository
2. Run dart pub get to install dependencies

Generating JSON Serializers

This project uses json_serializable for model serialization:

• Run dart run build_runner build to generate serializers
• Run dart run build_runner watch to continuously rebuild when files change

Code Quality

Before committing, ensure your code passes:

• Formatting: dart format .
• Analysis: dart analyze

Running Tests

Run the test suite:

dart test

Running Examples

To run the basic example:

dart run example/example.dart

You'll need to modify the file to include your Spotify client ID and secret.

For the authenticated example (accessing user data, playback control) run:

dart run example/example_auth.dart

This example will prompt you for a redirect URL and guide you through the OAuth flow to access features like currently playing tracks and available devices.