Share Song, Song Adjacency, Playlist Membership, Complete Albums, Custom Theming, Playlist Folders

[thisolivier]

Hi there team, I've forked Amperfy and built out a bunch of fun features. I can add you to my test flight if you'd like to play about with them, they're stable but so far only tested on iOS.

1. Sharing songs - You can send the original file to a friend via the iOS sharing API.
2. Song adjacency - Each song has a list of adjacent songs, based on whether they are neighbours in a playlist (highest signal), or near neighbours in a playlist, or just plain in the same playlist. This is visible through the ... menu on song rows or the mini player via ....
3. Playlist membership - works similar to song adjacency, but shows the playlists which a song is part of.
4. Complete Albums - I have a lot of single tracks from albums that I don't want to see in the albums view, so I made a query predicate for only albums with 3 or more tracks, and added a 'complete albums' item to the library page. I've also worked this into the recently added tracks and albums Home Screen sections.
5. Custom themeing - Y'all should just check this out. It's a bit janky, but I love it. Custom font, gradient backgrounds, more colour choices.
6. Playlist folders - Does what it says on the tin. The UX is very MVP, but functionally it's stable. Deleting folders pops playlists to the root (they work like tags, not a file system).

The catch? I've been able to do this since I have a Claude Max plan for the month, that fancy AI has done all the code work and I just spec the features and review the code (I'm an ex iOS dev and SDK architect). A lot of the code I'd carefully review if it was going to be submitted to this project, not to mention some of it makes sense to add to the server, not the client.

What I'm looking for here is any signal that these features are cool and anyone would like me to take the time to get them into shape and share them. I'm also looking to understand the status of the SwiftUI rebuild (custom theming is usually a lot more stable in SwiftUI).

One note: items 2, 3 and 4 all rely on pretty intense computations of a library, but have linear cost scaling with library size. My library is small, some 10,000 songs, and on an iPhone 13 it takes about 5mins for them all to run in a fresh install. If I'm right, a 100,000 song library would take about 45mins, but may be much less on a newer phone. I have set up an orchestration runner to ensure these queries are handled in serial, and each is designed to prevent memory bloat during calculation. Here's how they scale:

• Song Adjacency algorithm cost is O(N x W) where N is the number of songs, and W is the window size (the process moves a sliding window though all playlists to look for adjacency).
• Playlist membership algorithm cost is O(P x S) where P is number of playlists and S is the average playlist song count.
• Complete Albums algorithm cost is O(A) where A is number of albums.

[BLeeEZ]

Hi,
thank you proposing these these features. All your features sound really interesting.
Regarding the "intense computations of a library" I can say the following: There are a lot of Amperfy users out there with gigantic libraries (>10TB of songs). What I receive as feedback is that the performance is currently "acceptable" but should be improved. These background tasks can often result in scroll stutter.

Feature 1 and 6 are great improvements with a small adjustment footprint on both side (writing and reviewing). Always welcome.
Feature 5 is probably hard to maintain to keep accurate on all platforms. I am currently not sure to have this.
Feature 2-4 sounds cool but it really depends on the resource consumption and the effects on slowing down UI, especially when user scrolls and a lot of stuff is in the download manager.

[thisolivier]

1 I'll share first, it's easy to wrap up.
6 will take a few more days to polish and maybe re-architect.
5 you are right about, hard to maintain, but if the UI is moving to SwiftUI then it would be a good option.
2-5 I'll come back to these last.

It's lovely to receive feedback on all this, and I'm excited to contribute to the project.

[thisolivier]

Share song is up at PR #676