How to see "completeness" of an album?

[NicolasPL64]

Is it possible (maybe with inline and missing plugins) to know what percentage of completeness does an album have?
For example, if the album has 10 songs and I only have 7, it should display 70% when listing them with, say, beet ls -af '$album: $completeness'.

I've tried writing my own inline block but I always end up getting an error saying certain fields aren't available...

[snejus]

This should be possible using the inline plugin, something like this:

album_fields:
  completeness: |
    track_count = len(items)
    total_track_count = 0
    for item in items:
      # calculate total track count using item.disc and item.tracktotal fields

    ratio = track_count / total_track_count 
    return f"{100 * ratio}%"

[NicolasPL64]

Thank you so much!

For future users, this got it working:

album_fields:
  completeness: |
    track_count = len(items)

    discs = {}
    for item in items:
        if item.disc and item.tracktotal:
            discs[item.disc] = item.tracktotal

    total_track_count = sum(discs.values())

    if total_track_count == 0:
        return 0

    return round(100 * (track_count / total_track_count), 2)

Also using the Types Plugin with:

types:
  completeness: float

...let's me filter, say, albums with >=70% but <100% completeness using:
beet ls -af '$album: $completeness' completeness:70.. ^completeness:100

Or even listing what songs are missing from those albums with:
beet missing -f '$albumartist - $album - $title' completeness:70.. ^completeness:100