🎧 Spotify

Important

Both Spotify Playback and Spotify Web API require users to authenticate with a valid Spotify Premium subscription.

🎹 Features

♪ Real-Time Music Playback: Play songs using the Spotify Playback SDK.
♪ Playback Controls: Full playback functionality including play, pause, next, previous, shuffle, and repeat.
♪ Personalized Access: View and play your saved playlists, albums, and liked songs.
♪ Playback Devices: Switch between different playback devices (desktop, mobile, smart speakers).
♪ Lyrics Sync: Follow along with synced lyrics for a karaoke-like experience.
♪ Custom Playlists: Create and manage your own playlists within the app.

🎸 Technologies Used

♪ Next.js: Frontend framework for building user interface.
♪ Apollo Client: GraphQL client for fetching data from Apollo Server.
♪ Zustand: Client state management.
♪ Node.js(Express): Backend server handling Spotify Web API requests and managing authentication.
♪ Apollo Server: GraphQL server for securely delivering Spotify data to the frontend.
♪ Spotify Web API: Used exclusively by the backend server for fetching Spotify data like playlists, albums, and playback status.
♪ Spotify Playback SDK: Enables real-time music playback on the frontend.

🥁 Architecture Overview

This project follows a client-server architecture that integrates the Spotify Web Playback SDK for real-time music playback and the Spotify Web API for data fetching.

1. Backend (Express + Apollo Server)

• Handles authentication with Spotify API (OAuth flow). 👉 blog post
• Fetches Spotify data (e.g., playlists, albums, playback state) via the Spotify Web API.
• Acts as a GraphQL server (using Apollo Server) to securely expose Spotify data to the frontend.
• Manages sensitive credentials (e.g., Spotify client ID and secret) and ensures they are never exposed to the client.

2. Frontend (Next.js + Apollo Client) 👉 repo

• Connects to the backend's Apollo Server to retrieve and display Spotify data using GraphQL.
• Manages playback controls (play, pause, skip) and state updates via the Spotify Web Playback SDK.
• Directly interacts with Spotify's playback server for real-time track streaming and control.
• Does not directly communicate with the Spotify Web API, ensuring API credentials are securely managed by the backend.

3. Communication Flow

graph LR
A[Frontend] -->|GraphQL Queries| B[Apollo Client]
B -->|Fetch Data| C[Apollo Server]
C -->|API Requests| D[Spotify Web API]
D -->|API Responses| C
C -->|GraphQL Responses| B
B -->|Update UI| A
A -->|Playback Controls| E[Spotify Web Playback SDK]
E -->|Manage Playback| A

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📸 Screenshots

🛠️ Troubleshooting

• Playback Not Starting: Ensure you have a Spotify Premium account and the app is connected to an active device.

• Authentication Errors: Verify your environment variables and Spotify Developer Dashboard settings.

• API Rate Limits: Avoid exceeding Spotify Web API’s rate limits. Use caching to optimize requests.