Hi fellow selfhosters!

i pay (i know, i know) for Spotify Premium and i would like to progressively build my self-hosted music collection leveraging the fact that i am a paying customer and i would hate if the pull songs under my rug over time.

Any good self-hostable approach here? Ideally, the flow would be:

• I listen to spotify on my mobile devices, add songs to playlists and such
• my self-host setup syncs those playlists
• ... and download the songs using my paid for premium account from spotify itself
• Doean't really needs to be web-based, i can access my server anbd run anything CLI based or even plain old GUI (linux).

I don't want fake solutions that use Google Music or Deezer to download, i pay spotify and expect somehow to be able to download 320Kbps music from it.

The overall process can be manual, but better automated.

I already have lidarr, but it's basically impossible to download the same music from it, at least not the music i listen to.

A viable workaround could be something that builds by spotify playlists using what music i have downloaded with lidarr, maybe notifying me what is missing...

EDIT: somebody pointed out this is against Spotify TOS. Anyway i found a solution using Spotizerr, which is a self-hosted web app that does exactly what i was looking for. You still need a paid spotify account unless you want to download low-res from Deezer.