Playlist are incomplete when sync specific library

[simonc56]

Description

When user sync lists but doesn't sync all libraries, the plex playlist can be incomplete because of partial script browsing of plex library. A log info could warn that list sync may be incomplete.
I may also be more than a feature request because it also updates lists and remove items from them. Looks like a real issue.

Use case

Step-by-step example:

1. Set liked_lists to True and have a trakt liked list containing movies
2. Run a sync with --sync tv argument

Expected: Plex having a new playlist containing movies from trakt liked list
What happens really: Plex playlist doesn't contain movies because script didn't run through movies library

If user sync only movies, playlists will be updated and tv episodes removed from them.
If user sync only tv, playlists will be updated and movies removed from them.

---

Line specific for movies or tv :

PlexTraktSync/plex_trakt_sync/commands/sync.py

Line 130 in c7836e3

listutil.addPlexItemToLists(m.trakt_id, m.plex.item)

Line always run :

PlexTraktSync/plex_trakt_sync/commands/sync.py

Line 146 in c7836e3

listutil.updatePlexLists(server)

The list syncing logic is to go through every plex item during the library sync. And when an item matches with a trakt list, it is added to the plex list. If the script doesn't browse all libraries, we cannot be sure the plex playlist will be complete.
#228 (comment)

Workarounds

• Disable partial sync. But it's not wanted.
• rewrite the lists sync logic Avoid delete/create playlists #124 Looking to create Collections instead of Playlists #134

[simonc56]

@BEisem

I have a couple of suggestions. Let me know if you want me to add them as separate Feature Request issues...

The first is, I know you changed the "Playlist not found" to debug log level, and that will get rid of the errors. But it would be nice to have some sort of output at the end, indicating how many (if any) items were added to each list, or what actually happened during the playlist sync.

The other thing, if it's possible, it would be great if it would sync playlists without having to do a full sync of all libraries. If there is a way to add in this logic, let's say I sync only Movies libraries (--sync=movies), could it still sync movies playlists? The reason I ask is, I will probably never do a full sync of all libraries, because of the size of my libraries and the time it takes. I typically sync TV shows throughout the day, and then do a single Movie sync at night. So it would be nice if it handled the Movie playlists during that movie sync, and if there were any TV playlists, it could handle those during the TV library sync. Does that make sense?

Very interesting suggestions.
The problem is that a list can contain both movies and tv episodes...
It is quite complicated right now, this part of the script should be rewritten.

[glensc]

perhaps, for now, disable playlist logic if the user doesn't do full library sync and print a warning about that?

[simonc56]

yes, i'm ok with this idea

[glensc]

The problem is that a list can contain both movies and tv episodes...

Checked this code recently, sharing some info. Python Plex has check that all items in the list are either Audio, Video or Photo type. Movies and Episodes are Video type:

• https://github.com/pkkid/python-plexapi/blob/3d3f9da5012428f5d703cf9f8e95f6aa10673ea6/plexapi/playlist.py#L388-L389
• https://github.com/pkkid/python-plexapi/blob/3d3f9da5012428f5d703cf9f8e95f6aa10673ea6/plexapi/playlist.py#L346-L351

[glensc]

Disabling when --library, --movie, --show, --id is specified:

• Feature: Disable lists/watchlist sync for partial walk #1238

[glensc]

I don't see how the rest of the problem is solvable. if you sync movies library only, you could workaround by not clearing the existing list of shows, but then the ordering will be wrong.