Output mode for printing playlists of similar tracks

[iammordaty]

Hello! In musly command line tool, I added the ability to change output mode. The new mode allows printing a playlist of similar tracks in a similar way as when listing files from the collection.

Please see an example outputs below:

$ musly -p test/2.mp3 # or: musly -o short -p test/2.mp3
[...]
Computing the k=5 most similar tracks to: test/2.mp3
audio/3.mp3
test/1.mp3
test/5.mp3
test/4.mp3

$ musly -o long -p test/2.mp3
[...]
Computing the k=5 most similar tracks to: test/2.mp3
track-id: 3, track-distance: 0.720967, track-origin: test/3.mp3
track-id: 2, track-distance: 0.837826, track-origin: test/1.mp3
track-id: 1, track-distance: 0.910639, track-origin: test/5.mp3
track-id: 4, track-distance: 0.93015, track-origin: test/4.mp3

[f0k]

Hey @iammordaty, thank you for the PR and sorry for the late reply! This looks useful indeed, and implementing it as a string option would enable other formats in the future (such as a CSV). I left a few comments in the code. Let me know what you think.

[f0k]

Looks good in principle! I think we should omit the track- prefixes, though. And track-origin could just become filename? And I'm a bit unsure if the track id is useful, since users do not have a way to set it anyway. Would you have a use case in mind?

[iammordaty]

I think we should omit the track- prefixes, though. And track-origin could just become filename?

I thought about consistency with the 'list files' mode, but if there is no such need, I will remove track- prefixes and change track-origin to filename - it clearly indicates what it is and just looks better :-)

And I'm a bit unsure if the track id is useful, since users do not have a way to set it anyway. Would you have a use case in mind?

Thank you for pointing this out, I had doubts about adding it.
As above, I added this field to be consistent with file listing mode. I noticed that this is not a "real" track identifier, but I left it at MR to talk about it to make sure.

[iammordaty]

Hi, @f0k! Never mind, thanks for the answer and the code review!

[iammordaty]

Hi, @f0k! Is there any chance of accepting this MR? If I should change anything else, please let me know. Thanks!