Spotify Playlist Duplicate Manager

Overview

Spotify Playlist Duplicate Manager is a Golang application that helps you remove all duplicate songs from a specified Spotify playlist. This project utilizes the Spotify Web API to access and manipulate playlists. It is designed to run as a standalone application or deployed on a server for automated playlist maintenance.

Features

• Connects to the Spotify Web API using OAuth2 authentication.
• Retrieves the list of songs in a specified playlist.
• Identifies and removes duplicate songs, keeping only unique tracks in the playlist.
• Supports handling large playlists efficiently through parallelization.

Installation

Prerequisites

• Go version 1.16 or later installed.
• Spotify Developer Account: Sign up here

Getting Started

1. Clone the repository:

   git clone https://github.com/yourusername/spotify-playlist-duplicate-remover.git

2. Install dependencies:

   go mod download

3. Create Spotify App

   1. Once on the dev dashboard click Create App

   2. Fill in the required fields (name, description, redirect uri)

      • RedirectUri is the uri spotify will redirect the user to after successful authentication.
        Ex: http://localhost:8080/callback

4. Set up environment variables:

   1. Create a .env file in the project root. Use .env.example as a template

       cp .env.example .env 

   2. Update .env with your credentials

   Accepted .env variables

   Key	Description
   SPOTIFY_ID	your spotify client id
   SPOTIFY_SECRET	your spotify client secret
   BASE_URI	baseUri for callback endpoint to be hosted at
   PORT	port used for callback endpoint

   Note: BASE_URI and PORT must match the RedirectUri set on the spotify app in Step 3

   Example .env

   SPOTIFY_ID=spotify_id
   SPOTIFY_SECRET=spotify_secret
   BASE_URI=localhost
   PORT=8080

5. Running the Application:

   You can run the application with the following flags:

   • To remove duplicates from a specific playlist, use the -playlistIds flag with a comma-separated list of playlist IDs:

   go run main.go -playlistIds "3cEYpjA9oz9GiPac4AsH4n,..."

   • To remove duplicates from all playlists, use the -all flag:

   go run main.go -all

   The application will authenticate with the Spotify Web API using the provided credentials and then proceed to remove duplicate songs from the specified playlists.

   Note: If you only pass one playlist ID to the -playlistIds flag, the application will treat it as a single ID.