make sure upload get moove to built-in libs

api/funkwhale_api/music/migrations/0061_migrate_libraries_to_playlist.py

@@ -38,6 +38,9 @@ def migrate_libraries_to_playlist(apps, schema_editor):
     Actor = apps.get_model("federation", "Actor")
     Channel = apps.get_model("audio", "Channel")
 
+    to_instance_libs = []
+    to_public_libs = []
+    to_me_libs = []
     for library in Library.objects.all():
         if (
             not federation_utils.is_local(library.actor.fid)
@@ -86,6 +89,15 @@ def migrate_libraries_to_playlist(apps, schema_editor):
                 with transaction.atomic():
                     insert_tracks_to_playlist(apps, playlist, uploads)
 
+            if library.privacy_level == "me":
+                to_me_libs.append(library)
+            if library.privacy_level == "instance":
+                to_instance_libs.append(library)
+            if library.privacy_level == "everyone":
+                to_public_libs.append(library)
+
+            library.privacy_level = "me"
+            library.save()
         except Exception as e:
             print(f"An error occurred during library.playlist creation : {e}")
             continue
@@ -113,6 +125,35 @@ def migrate_libraries_to_playlist(apps, schema_editor):
                 library.uploads.all().update(library=build_in_lib)
                 library.delete
 
+            if privacy_level == "everyone":
+                for lib in to_public_libs:
+                    lib.uploads.all().update(library=build_in_lib)
+            if privacy_level == "instance":
+                for lib in to_instance_libs:
+                    lib.uploads.all().update(library=build_in_lib)
+            if privacy_level == "me":
+                for lib in to_me_libs:
+                    lib.uploads.all().update(library=build_in_lib)
+
+
+def check_succefull_migration(apps, schema_editor):
+    Actor = apps.get_model("federation", "Actor")
+    Playlist = apps.get_model("playlists", "Playlist")
+
+    for actor in Actor.objects.all():
+        not_build_in_libs = len(actor.playlists.all()) + len(
+            actor.libraries.filter(channel__isnull=False)
+        )
+        if len(actor.libraries.all()) - 2 != not_build_in_libs:
+            raise Exception(
+                "Incoherent library database state, check for errors in log and share them to the funkwhale team. Migration was abordted to prevent data loss"
+            )
+    for playlist in Playlist.objects.all():
+        if playlist.library.privacy_level != "me":
+            raise Exception(
+                "Incoherent playlist database state, check for errors in log and share them to the funkwhale team. Migration was abordted to prevent data loss"
+            )
+
 
 class Migration(migrations.Migration):
     dependencies = [
@@ -132,4 +173,7 @@ class Migration(migrations.Migration):
         migrations.RunPython(
             migrate_libraries_to_playlist, reverse_code=migrations.RunPython.noop
         ),
+        migrations.RunPython(
+            check_succefull_migration, reverse_code=migrations.RunPython.noop
+        ),
     ]

docs/specs/playlist-library-federation/index.md

@@ -46,13 +46,11 @@ There is no other reason to share the playlit.library to remote.
 - [x] library and playlist scan delay are long (24h), force on ap update
 - [x] make sure only owned upload are added to the playlist.library
 - [x] update the "drop library" migrations to use the playlist.library instead of user follow
-- [ ] make sure user get the new libraries created after library drop
+- [x] make sure user get the new libraries created after library drop
 - [x] update the federation api : when we receive a fetch for a library the upload serializer need to know which lib (playlist lib or user lib)
 - [x] Support library.playlist_uploads in library scan -> add playlist_uploads in items in library federation viewset
 - [x] investigate library scan bug : don't delete old content of the lib (local cache?): we need to empty the playlist before the scan(not ideal but less work)
-- [ ] if the user change the upload to another built-in lib, make sure the upload is not delete (we would loose the playlist_library relation) but only updated.
+- [x] check actor has only have three built-in libs and upload.playlist_libraries is private after migration
-- [ ] enforce actor.libraries to only have three entries.
-- [ ] enforce upload.playlist_libraries to always be private
 
 ### Follow up
 
@@ -62,3 +60,4 @@ There is no other reason to share the playlit.library to remote.
 - [ ] Playlist discovery : add the playlist to my playlist collection = follow request to playlist
 - [ ] Playlist Track activity (to avoid having to refetch the whole playlist)
 - [ ] Document : The user that want to federate need to activate remote activities in it's user settings. Even if the library is public the playlist activities will not be sended to remote -> We need to implement a followers activity setting (#2362)
+- [ ] allow users to change the upload to another built-in lib, make sure the upload is not delete (we would loose the playlist_library relation) but only updated