Spotify Sync Liked Songs to Playlist

This n8n workflow automates the process of synchronizing your liked songs from Spotify into a designated Spotify playlist. It's designed to keep a specific playlist updated with all the songs you've marked as "liked" in Spotify, ensuring you have a curated collection that mirrors your preferences.

What it does

1. Triggers on Schedule: The workflow can be triggered manually or on a predefined schedule (e.g., daily, weekly) to check for updates.
2. Fetches Liked Songs: It retrieves all the songs you have liked in your Spotify account.
3. Fetches Playlist Songs: It retrieves all the songs currently present in your specified target Spotify playlist.
4. Compares Datasets: The workflow compares the list of liked songs with the songs already in your playlist to identify new liked songs that are not yet in the playlist.
5. Adds New Songs to Playlist: For each new liked song found, it adds the song to your designated Spotify playlist.
6. Notifies on Success (Optional): If configured, it can send a notification (e.g., via Gotify) about the successful synchronization.

Prerequisites/Requirements

• n8n Instance: A running n8n instance.
• Spotify Account: A Spotify account with an active Premium subscription (required for full API access and playback control, though basic liked songs access might work without).
• Spotify API Credentials: You will need to set up Spotify API credentials (OAuth2) in your n8n instance. This typically involves creating a Spotify Developer application to get a Client ID and Client Secret.
• Target Spotify Playlist: A Spotify playlist where you want to sync your liked songs. You will need its ID.
• Gotify Account (Optional): If you wish to receive notifications, a Gotify server and an application token.

Setup/Usage

1. Import the Workflow:
   • Copy the provided JSON code.
   • In your n8n instance, go to "Workflows" and click "New".
   • Click the "Import from JSON" button and paste the JSON code.
2. Configure Spotify Credentials:
   • Locate the "Spotify" nodes in the workflow.
   • Click on each Spotify node and select or create a new Spotify OAuth2 credential.
   • Follow the n8n documentation to set up your Spotify OAuth2 credentials if you haven't already. This will involve redirecting to Spotify for authentication.
3. Specify Target Playlist:
   • In the Spotify node responsible for adding songs to the playlist, ensure the "Playlist ID" is correctly set to the ID of your target Spotify playlist.
4. Configure Gotify (Optional):
   • If you want notifications, click on the "Gotify" node.
   • Select or create a new Gotify API credential, providing your Gotify URL and application token.
5. Activate the Workflow:
   • Once all credentials and settings are configured, activate the workflow by toggling the "Active" switch in the top right corner of the workflow editor.
6. Run the Workflow:
   • You can manually execute the workflow by clicking "Execute Workflow" in the top right.
   • For automated syncing, ensure the "Schedule Trigger" node is enabled and configured to your desired interval (e.g., every 24 hours).