feat(album_repository.go): add kodi-style album playcount option - #1032

[vvdveen]

Closes 1032.

Description

Adds a new configuration option AlbumPlaycountMode. When set to "kodi", album play count will be computed by dividing the total number of plays of all tracks on the album by the number of tracks. This is further discussed in
2711.

I decided to make this option a string, to allow for other approaches / algorithms / modes to be added in the future.

Changes

• Adds AlbumPlaycountMode to conf/configuration.go and cmd/root.go. Default value is "absolute" meaning album playcount will be the sum of all individual track counts (current behavior).
• Added hook functionality to persistence/album_repository.go. When converting a dbAlbum to a model, any installed hooks will be invoked on the album.
• If AlbumPlaycountMode = "kodi", a hook will be installed that will update the playcount according the discussion and issue above.

[dweymouth]

I would recommend a more proper descriptive name for the "kodi" mode such as "normalized"

[deluan]

Thanks for this. I agree with @dweymouth, we should make the name more descriptive and also not reference the competitor ;)

I'll review it soon, and give you feedback on this.

[vvdveen]

Just found the time to make those changes and fix formatting. I see my branch is out-of-date with the base branch though. Let me know if I must merge and try again.
I agree the feature requires better documentation but I don't think cmd/root.go is the right place.

[github-actions]

Download the artifacts for this pull request:

• js-bundle.zip
• binaries.zip

[deluan]

I agree the feature requires better documentation but I don't think cmd/root.go is the right place.

Yes, this documentation should go to https://www.navidrome.org/docs/usage/configuration-options/#advanced-configuration

[deluan]

LGTM, just fixed some small nitpicks.

Can you please add the new AlbumPlayCountMode config option to the website?

Thanks for the contribution!