Add Item.filepath property to simplify path handling

Additionally, fix DefaultTemplateFunctions._func_names definition.

beets/library.py

@@ -12,8 +12,8 @@
 # The above copyright notice and this permission notice shall be
 # included in all copies or substantial portions of the Software.
 
-"""The core data store and collection logic for beets.
-"""
+"""The core data store and collection logic for beets."""
+
 from __future__ import annotations
 
 import os
@@ -24,6 +24,7 @@ import sys
 import time
 import unicodedata
 from functools import cached_property
+from pathlib import Path
 
 from mediafile import MediaFile, UnreadableFileError
 
@@ -658,6 +659,11 @@ class Item(LibModel):
             f"ON {cls._table}.album_id = {cls._relation._table}.id"
         )
 
+    @property
+    def filepath(self) -> Path | None:
+        """The path to the item's file as pathlib.Path."""
+        return Path(os.fsdecode(self.path)) if self.path else self.path
+
     @property
     def _cached_album(self):
         """The Album object that this item belongs to, if any, or
@@ -1741,6 +1747,11 @@ class DefaultTemplateFunctions:
 
     _prefix = "tmpl_"
 
+    @cached_classproperty
+    def _func_names(cls) -> list[str]:
+        """Names of tmpl_* functions in this class."""
+        return [s for s in dir(cls) if s.startswith(cls._prefix)]
+
     def __init__(self, item=None, lib=None):
         """Parametrize the functions.
 
@@ -2038,11 +2049,3 @@ class DefaultTemplateFunctions:
             return trueval if trueval else self.item.formatted().get(field)
         else:
             return falseval
-
-
-# Get the name of tmpl_* functions in the above class.
-DefaultTemplateFunctions._func_names = [
-    s
-    for s in dir(DefaultTemplateFunctions)
-    if s.startswith(DefaultTemplateFunctions._prefix)
-]

beetsplug/autobpm.py

@@ -19,7 +19,6 @@ from typing import Iterable
 
 import librosa
 
-from beets import util
 from beets.importer import ImportTask
 from beets.library import Item, Library
 from beets.plugins import BeetsPlugin
@@ -55,45 +54,28 @@ class AutoBPMPlugin(BeetsPlugin):
 
     def calculate_bpm(self, items: list[Item], write: bool = False) -> None:
         for item in items:
-            if item["bpm"]:
-                self._log.info(
-                    "found bpm {0} for {1}",
-                    item["bpm"],
-                    util.displayable_path(item.path),
-                )
+            path = item.filepath
+            if bpm := item.bpm:
+                self._log.info("BPM for {} already exists: {}", path, bpm)
                 if not self.config["overwrite"]:
                     continue
 
             try:
-                y, sr = librosa.load(
-                    util.syspath(item.path), res_type="kaiser_fast"
-                )
+                y, sr = librosa.load(item.filepath, res_type="kaiser_fast")
             except Exception as exc:
-                self._log.error(
-                    "Failed to load {0}: {1}",
-                    util.displayable_path(item.path),
-                    exc,
-                )
+                self._log.error("Failed to load {}: {}", path, exc)
                 continue
 
             kwargs = self.config["beat_track_kwargs"].flatten()
             try:
                 tempo, _ = librosa.beat.beat_track(y=y, sr=sr, **kwargs)
             except Exception as exc:
-                self._log.error(
-                    "Failed to measure BPM for {0}: {1}",
-                    util.displayable_path(item.path),
-                    exc,
-                )
+                self._log.error("Failed to measure BPM for {}: {}", path, exc)
                 continue
 
             bpm = round(tempo[0] if isinstance(tempo, Iterable) else tempo)
             item["bpm"] = bpm
-            self._log.info(
-                "added computed bpm {0} for {1}",
-                bpm,
-                util.displayable_path(item.path),
-            )
+            self._log.info("Computed BPM for {}: {}", path, bpm)
 
             if write:
                 item.try_write()