new plugin event: import_task_files

beets/importer.py

@@ -779,6 +779,9 @@ def manipulate_files(config):
             for item in items:
                 config.lib.store(item)
 
+        # Plugin event.
+        plugins.send('import_task_files', config=config, task=task)
+
 def fetch_art(config):
     """A coroutine that fetches and applies album art for albums where
     appropriate.

docs/changelog.rst

@@ -30,6 +30,8 @@ Changelog
   `$genre` would use the old genre instead of the newly discovered one.
 * New plugin event: ``import_task_choice`` is called after an import task has an
   action assigned.
+* New plugin event: `import_task_files` is called after a task's file
+  manipulation has finished (copying or moving files, writing metadata tags).
 * New plugin event: ``library_opened`` is called when beets starts up and
   opens the library database.
 * Fix a crash when moving files to a Samba share.

docs/plugins/writing.rst

@@ -142,6 +142,10 @@ currently available are:
   Use ``task.choice_flag`` to determine the action to be taken. Parameters:
   ``task`` and ``config``.
 
+* *import_task_files*: called after an import task finishes manipulating the
+  filesystem (copying and moving files, writing metadata tags). Parameters:
+  ``task`` and ``config``.
+
 * *library_opened*: called after beets starts up and initializes the main
   Library object. Parameter: ``lib``.