app/classes.py

@@ -1,10 +1,9 @@
 # Standard library imports
 from __future__ import annotations
 
-from dataclasses import dataclass
+from dataclasses import dataclass, field
 from enum import auto, Enum
 import functools
-import threading
 from typing import NamedTuple
 
 # Third party imports
@@ -35,18 +34,12 @@ def singleton(cls):
     """
     Make a class a Singleton class (see
     https://realpython.com/primer-on-python-decorators/#creating-singletons)
-
-    Added locking.
     """
 
-    lock = threading.Lock()
-
     @functools.wraps(cls)
     def wrapper_singleton(*args, **kwargs):
-        if wrapper_singleton.instance is None:
-            with lock:
-                if wrapper_singleton.instance is None:  # Check still None
-                    wrapper_singleton.instance = cls(*args, **kwargs)
+        if not wrapper_singleton.instance:
+            wrapper_singleton.instance = cls(*args, **kwargs)
         return wrapper_singleton.instance
 
     wrapper_singleton.instance = None

app/config.py

@@ -2,6 +2,7 @@
 import datetime as dt
 import logging
 import os
+from typing import Optional
 
 # PyQt imports
 
@@ -34,6 +35,8 @@ class Config(object):
     COLOUR_UNREADABLE = "#dc3545"
     COLOUR_WARNING_TIMER = "#ffc107"
     DBFS_SILENCE = -50
+    DEBUG_FUNCTIONS: list[Optional[str]] = []
+    DEBUG_MODULES: list[Optional[str]] = []
     DEFAULT_COLUMN_WIDTH = 200
     DISPLAY_SQL = False
     DO_NOT_IMPORT = "Do not import"
@@ -80,7 +83,6 @@ class Config(object):
     MAIL_USERNAME = os.environ.get("MAIL_USERNAME")
     MAIL_USE_TLS = os.environ.get("MAIL_USE_TLS") is not None
     MAX_IMPORT_MATCHES = 5
-    MAX_IMPORT_THREADS = 3
     MAX_INFO_TABS = 5
     MAX_MISSING_FILES_TO_REPORT = 10
     MILLISECOND_SIGFIGS = 0

app/dbtables.py

@@ -147,15 +147,12 @@ class TracksTable(Model):
     title: Mapped[str] = mapped_column(String(256), index=True)
 
     playlistrows: Mapped[list[PlaylistRowsTable]] = relationship(
-        "PlaylistRowsTable",
-        back_populates="track",
-        cascade="all, delete-orphan",
+        "PlaylistRowsTable", back_populates="track"
     )
     playlists = association_proxy("playlistrows", "playlist")
     playdates: Mapped[list[PlaydatesTable]] = relationship(
         "PlaydatesTable",
         back_populates="track",
-        cascade="all, delete-orphan",
         lazy="joined",
     )
 

app/file_importer.py

@@ -3,7 +3,6 @@ from __future__ import annotations
 from dataclasses import dataclass, field
 from fuzzywuzzy import fuzz  # type: ignore
 import os.path
-import threading
 from typing import Optional, Sequence
 import os
 import shutil
@@ -11,6 +10,7 @@ import shutil
 # PyQt imports
 from PyQt6.QtCore import (
     pyqtSignal,
+    QObject,
     QThread,
 )
 from PyQt6.QtWidgets import (
@@ -30,7 +30,6 @@ from PyQt6.QtWidgets import (
 from classes import (
     ApplicationError,
     MusicMusterSignals,
-    singleton,
     Tags,
 )
 from config import Config
@@ -54,6 +53,7 @@ class ThreadData:
 
     base_model: PlaylistModel
     row_number: int
+    worker: Optional[DoTrackImport] = None
 
 
 @dataclass
@@ -62,10 +62,9 @@ class TrackFileData:
     Data structure to hold details of file to be imported
     """
 
-    source_path: str
     tags: Tags = Tags()
     destination_path: str = ""
-    import_this_file: bool = False
+    import_this_file: bool = True
     error: str = ""
     file_path_to_remove: Optional[str] = None
     track_id: int = 0
@@ -86,7 +85,6 @@ class TrackMatchData:
     track_id: int
 
 
-@singleton
 class FileImporter:
     """
     Class to manage the import of new tracks. Sanity checks are carried
@@ -99,16 +97,11 @@ class FileImporter:
     The actual import is handled by the DoTrackImport class.
     """
 
-    # Place to keep a reference to importer workers. This is an instance
-    # variable to allow tests access. As this is a singleton, a class
-    # variable or an instance variable are effectively the same thing.
-    workers: dict[str, DoTrackImport] = {}
-
     def __init__(
         self, base_model: PlaylistModel, row_number: Optional[int] = None
     ) -> None:
         """
-        Initialise the FileImporter singleton instance.
+        Set up class
         """
 
         # Create ModelData
@@ -116,13 +109,23 @@ class FileImporter:
             row_number = base_model.rowCount()
         self.model_data = ThreadData(base_model=base_model, row_number=row_number)
 
+        # Populate self.import_files_data
+        for infile in [
+            os.path.join(Config.REPLACE_FILES_DEFAULT_SOURCE, f)
+            for f in os.listdir(Config.REPLACE_FILES_DEFAULT_SOURCE)
+            if f.endswith((".mp3", ".flac"))
+        ]:
+            self.import_files_data[infile] = TrackFileData()
+
+        # Place to keep a reference to importer threads
+        self.threads: list[QThread] = []
+
         # Data structure to track files to import
-        self.import_files_data: list[TrackFileData] = []
+        self.import_files_data: dict[str, TrackFileData] = {}
 
         # Dictionary of exsting tracks indexed by track.id
         self.existing_tracks = self._get_existing_tracks()
 
-        # Get signals
         self.signals = MusicMusterSignals()
 
     def _get_existing_tracks(self) -> Sequence[Tracks]:
@@ -133,56 +136,11 @@ class FileImporter:
         with db.Session() as session:
             return Tracks.get_all(session)
 
-    def start(self) -> None:
-        """
-        Build a TrackFileData object for each new file to import, add it
-        to self.import_files_data, and trigger importing.
+    def do_import(self) -> None:
         """
+        Populate self.import_files_data, which is a TrackFileData object for each entry.
 
-        new_files: list[str] = []
-
-        if not os.listdir(Config.REPLACE_FILES_DEFAULT_SOURCE):
-            show_OK(
-                "File import",
-                f"No files in {Config.REPLACE_FILES_DEFAULT_SOURCE} to import",
-                None,
-            )
-            return
-
-        for infile in [
-            os.path.join(Config.REPLACE_FILES_DEFAULT_SOURCE, f)
-            for f in os.listdir(Config.REPLACE_FILES_DEFAULT_SOURCE)
-            if f.endswith((".mp3", ".flac"))
-        ]:
-            if infile in [a.source_path for a in self.import_files_data]:
-                log.debug(f"file_importer.start skipping {infile=}, already queued")
-            else:
-                new_files.append(infile)
-                self.import_files_data.append(self.populate_trackfiledata(infile))
-
-        # Tell user which files won't be imported and why
-        self.inform_user(
-            [
-                a
-                for a in self.import_files_data
-                if a.source_path in new_files and a.import_this_file is False
-            ]
-        )
-
-        # Remove do-not-import entries from queue
-        self.import_files_data[:] = [
-            a for a in self.import_files_data if a.import_this_file is not False
-        ]
-
-        # Start the import if necessary
-        log.debug(f"Import files prepared: {[a.source_path for a in self.import_files_data]}")
-        self._import_next_file()
-
-    def populate_trackfiledata(self, path: str) -> TrackFileData:
-        """
-        Populate TrackFileData object for path:
-
-        - Validate file to be imported
+        - Validate files to be imported
         - Find matches and similar files
         - Get user choices for each import file
         - Validate self.import_files_data integrity
@@ -190,66 +148,86 @@ class FileImporter:
         - Import the files, one by one.
         """
 
-        tfd = TrackFileData(source_path=path)
+        if not self.import_files_data:
+            show_OK(
+                "File import",
+                f"No files in {Config.REPLACE_FILES_DEFAULT_SOURCE} to import",
+                None,
+            )
+            return
 
-        if self.check_file_readable(tfd):
-            if self.check_file_tags(tfd):
-                self.find_similar(tfd)
-                if len(tfd.track_match_data) > 1:
-                    self.sort_track_match_data(tfd)
-                selection = self.get_user_choices(tfd)
-                if self.process_selection(tfd, selection):
-                    if self.validate_file_data(tfd):
-                        tfd.import_this_file = True
+        for path in self.import_files_data.keys():
+            self.validate_file(path)
+            if self.import_files_data[path].import_this_file:
+                self.find_similar(path)
+                if len(self.import_files_data[path].track_match_data) > 1:
+                    self.sort_track_match_data(path)
+                selection = self.get_user_choices(path)
+                self.process_selection(path, selection)
+            if self.import_files_data[path].import_this_file:
+                self.validate_file_data(path)
 
-        return tfd
+        # Tell user which files won't be imported and why
+        self.inform_user()
+        # Start the import of all other files
+        self.import_next_file()
 
-    def check_file_readable(self, tfd: TrackFileData) -> bool:
+    def validate_file(self, path: str) -> None:
         """
-        Check file is readable.
-        Return True if it is.
-        Populate error and return False if not.
+        - check all files are readable
+        - check all files have tags
+        - Mark failures not to be imported and populate error text.
+
+        On return, the following TrackFileData fields should be set:
+
+        tags: Yes
+        destination_path: No
+        import_this_file: Yes (set by default)
+        error: No (only set if an error is detected)
+        file_path_to_remove: No
+        track_id: No
+        track_match_data: No
         """
 
-        if file_is_unreadable(tfd.source_path):
-            tfd.import_this_file = False
-            tfd.error = f"{tfd.source_path} is unreadable"
-            return False
+        for path in self.import_files_data.keys():
+            if file_is_unreadable(path):
+                self.import_files_data[path].import_this_file = False
+                self.import_files_data[path].error = f"{path} is unreadable"
+                continue
 
-        return True
+            try:
+                self.import_files_data[path].tags = get_tags(path)
+            except ApplicationError as e:
+                self.import_files_data[path].import_this_file = False
+                self.import_files_data[path].error = f"Tag errors ({str(e)})"
+                continue
 
-    def check_file_tags(self, tfd: TrackFileData) -> bool:
-        """
-        Add tags to tfd
-        Return True if successful.
-        Populate error and return False if not.
-        """
-
-        try:
-            tfd.tags = get_tags(tfd.source_path)
-        except ApplicationError as e:
-            tfd.import_this_file = False
-            tfd.error = f"of tag errors ({str(e)})"
-            return False
-
-        return True
-
-    def find_similar(self, tfd: TrackFileData) -> None:
+    def find_similar(self, path: str) -> None:
         """
         - Search title in existing tracks
         - if score >= Config.FUZZYMATCH_MINIMUM_LIST:
             - get artist score
             - add TrackMatchData to self.import_files_data[path].track_match_data
+
+        On return, the following TrackFileData fields should be set:
+
+        tags: Yes
+        destination_path: No
+        import_this_file: Yes (set by default)
+        error: No (only set if an error is detected)
+        file_path_to_remove: No
+        track_id: No
+        track_match_data: YES, IN THIS FUNCTION
         """
 
-        title = tfd.tags.title
-        artist = tfd.tags.artist
+        title = self.import_files_data[path].tags.title
+        artist = self.import_files_data[path].tags.artist
 
         for existing_track in self.existing_tracks:
             title_score = self._get_match_score(title, existing_track.title)
             if title_score >= Config.FUZZYMATCH_MINIMUM_LIST:
                 artist_score = self._get_match_score(artist, existing_track.artist)
-                tfd.track_match_data.append(
+                self.import_files_data[path].track_match_data.append(
                     TrackMatchData(
                         artist=existing_track.artist,
                         artist_match=artist_score,
@@ -259,12 +237,14 @@ class FileImporter:
                     )
                 )
 
-    def sort_track_match_data(self, tfd: TrackFileData) -> None:
+    def sort_track_match_data(self, path: str) -> None:
         """
         Sort matched tracks in artist-similarity order
         """
 
-        tfd.track_match_data.sort(key=lambda x: x.artist_match, reverse=True)
+        self.import_files_data[path].track_match_data.sort(
+            key=lambda x: x.artist_match, reverse=True
+        )
 
     def _get_match_score(self, str1: str, str2: str) -> float:
         """
@@ -286,7 +266,7 @@ class FileImporter:
 
         return combined_score
 
-    def get_user_choices(self, tfd: TrackFileData) -> int:
+    def get_user_choices(self, path: str) -> int:
         """
         Find out whether user wants to import this as a new track,
         overwrite an existing track or not import it at all.
@@ -302,12 +282,15 @@ class FileImporter:
         choices.append((Config.IMPORT_AS_NEW, 0, ""))
 
         # New track details
-        new_track_description = f"{tfd.tags.title} ({tfd.tags.artist})"
+        new_track_description = (
+            f"{self.import_files_data[path].tags.title} "
+            f"({self.import_files_data[path].tags.artist})"
+        )
 
         # Select 'import as new' as default unless the top match is good
         # enough
         default = 1
-        track_match_data = tfd.track_match_data
+        track_match_data = self.import_files_data[path].track_match_data
         if track_match_data:
             if (
                 track_match_data[0].artist_match
@@ -340,39 +323,48 @@ class FileImporter:
         else:
             return -1
 
-    def process_selection(self, tfd: TrackFileData, selection: int) -> bool:
+    def process_selection(self, path: str, selection: int) -> None:
         """
         Process selection from PickMatch
         """
 
         if selection < 0:
             # User cancelled
-            tfd.import_this_file = False
-            tfd.error = "you asked not to import this file"
-            return False
+            self.import_files_data[path].import_this_file = False
+            self.import_files_data[path].error = "you asked not to import this file"
 
         elif selection > 0:
             # Import and replace track
-            self.replace_file(tfd, track_id=selection)
+            self.replace_file(path=path, track_id=selection)
 
         else:
             # Import as new
-            self.import_as_new(tfd)
+            self.import_as_new(path=path)
 
-        return True
-
-    def replace_file(self, tfd: TrackFileData, track_id: int) -> None:
+    def replace_file(self, path: str, track_id: int) -> None:
         """
         Set up to replace an existing file.
+
+        On return, the following TrackFileData fields should be set:
+
+        tags: Yes
+        destination_path: YES, IN THIS FUNCTION
+        import_this_file: Yes (set by default)
+        error: No (only set if an error is detected)
+        file_path_to_remove: YES, IN THIS FUNCTION
+        track_id: YES, IN THIS FUNCTION
+        track_match_data: Yes
         """
 
-        if track_id < 1:
-            raise ApplicationError(f"No track ID: replace_file({tfd=}, {track_id=})")
+        ifd = self.import_files_data[path]
 
-        tfd.track_id = track_id
+        if track_id < 1:
+            raise ApplicationError(f"No track ID: replace_file({path=}, {track_id=})")
+
+        ifd.track_id = track_id
 
         existing_track_path = self._get_existing_track(track_id).path
-        tfd.file_path_to_remove = existing_track_path
+        ifd.file_path_to_remove = existing_track_path
 
         # If the existing file in the Config.IMPORT_DESTINATION
         # directory, replace it with the imported file name; otherwise,
@@ -380,11 +372,11 @@ class FileImporter:
         # names from CDs, etc.
 
         if os.path.dirname(existing_track_path) == Config.IMPORT_DESTINATION:
-            tfd.destination_path = os.path.join(
-                Config.IMPORT_DESTINATION, os.path.basename(tfd.source_path)
+            ifd.destination_path = os.path.join(
+                Config.IMPORT_DESTINATION, os.path.basename(path)
             )
         else:
-            tfd.destination_path = existing_track_path
+            ifd.destination_path = existing_track_path
 
     def _get_existing_track(self, track_id: int) -> Tracks:
         """
@@ -399,45 +391,58 @@ class FileImporter:
 
         return existing_track_records[0]
 
-    def import_as_new(self, tfd: TrackFileData) -> None:
+    def import_as_new(self, path: str) -> None:
         """
         Set up to import as a new file.
+
+        On return, the following TrackFileData fields should be set:
+
+        tags: Yes
+        destination_path: YES, IN THIS FUNCTION
+        import_this_file: Yes (set by default)
+        error: No (only set if an error is detected)
+        file_path_to_remove: No (not needed now)
+        track_id: Yes
+        track_match_data: Yes
         """
 
-        tfd.destination_path = os.path.join(
-            Config.IMPORT_DESTINATION, os.path.basename(tfd.source_path)
+        ifd = self.import_files_data[path]
+        ifd.destination_path = os.path.join(
+            Config.IMPORT_DESTINATION, os.path.basename(path)
         )
 
-    def validate_file_data(self, tfd: TrackFileData) -> bool:
+    def validate_file_data(self, path: str) -> None:
         """
         Check the data structures for integrity
-        Return True if all OK
-        Populate error and return False if not.
         """
 
+        ifd = self.import_files_data[path]
+
+        # Check import_this_file
+        if not ifd.import_this_file:
+            return
+
         # Check tags
-        if not (tfd.tags.artist and tfd.tags.title):
-            raise ApplicationError(
-                f"validate_file_data: {tfd.tags=}, {tfd.source_path=}"
-            )
+        if not (ifd.tags.artist and ifd.tags.title):
+            raise ApplicationError(f"validate_file_data: {ifd.tags=}, {path=}")
 
         # Check file_path_to_remove
-        if tfd.file_path_to_remove and not os.path.exists(tfd.file_path_to_remove):
+        if ifd.file_path_to_remove and not os.path.exists(ifd.file_path_to_remove):
             # File to remove is missing, but this isn't a major error. We
             # may be importing to replace a deleted file.
-            tfd.file_path_to_remove = ""
+            ifd.file_path_to_remove = ""
 
         # Check destination_path
-        if not tfd.destination_path:
+        if not ifd.destination_path:
             raise ApplicationError(
-                f"validate_file_data: no destination path set ({tfd.source_path=})"
+                f"validate_file_data: no destination path set ({path=})"
             )
 
         # If destination path is the same as file_path_to_remove, that's
         # OK, otherwise if this is a new import then check check
         # destination path doesn't already exists
-        if tfd.track_id == 0 and tfd.destination_path != tfd.file_path_to_remove:
-            while os.path.exists(tfd.destination_path):
+        if ifd.track_id == 0 and ifd.destination_path != ifd.file_path_to_remove:
+            while os.path.exists(ifd.destination_path):
                 msg = (
                     "New import requested but default destination path ({ifd.destination_path}) "
                     "already exists. Click OK and choose where to save this track"
@@ -450,104 +455,92 @@ class FileImporter:
                     directory=Config.IMPORT_DESTINATION,
                 )
                 if pathspec:
-                    if pathspec == '':
-                        # User cancelled
-                        tfd.error = "You did not select a location to save this track"
-                        return False
-                    tfd.destination_path = pathspec[0]
+                    ifd.destination_path = pathspec[0]
                 else:
-                    tfd.error = "destination file already exists"
-                    return False
+                    ifd.import_this_file = False
+                    ifd.error = "destination file already exists"
+                    return
 
         # Check track_id
-        if tfd.track_id < 0:
-            raise ApplicationError(
-                f"validate_file_data: track_id < 0, {tfd.source_path=}"
-            )
+        if ifd.track_id < 0:
+            raise ApplicationError(f"validate_file_data: track_id < 0, {path=}")
 
-        return True
-
-    def inform_user(self, tfds: list[TrackFileData]) -> None:
+    def inform_user(self) -> None:
         """
         Tell user about files that won't be imported
         """
 
         msgs: list[str] = []
-        for tfd in tfds:
-            msgs.append(
-                f"{os.path.basename(tfd.source_path)} will not be imported because {tfd.error}"
-            )
+        for path, entry in self.import_files_data.items():
+            if entry.import_this_file is False:
+                msgs.append(
+                    f"{os.path.basename(path)} will not be imported because {entry.error}"
+                )
         if msgs:
             show_OK("File not imported", "\r\r".join(msgs))
-            log.debug("\r\r".join(msgs))
 
-    def _import_next_file(self) -> None:
+    def import_next_file(self) -> None:
         """
         Import the next file sequentially.
-
-        This is called when an import completes so will be called asynchronously.
-        Protect with a lock.
         """
 
-        lock = threading.Lock()
+        while True:
+            if not self.import_files_data:
+                self.signals.status_message_signal.emit("All files imported", 10000)
+                return
 
-        with lock:
-            while len(self.workers) < Config.MAX_IMPORT_THREADS:
-                try:
-                    tfd = self.import_files_data.pop()
-                    filename = os.path.basename(tfd.source_path)
-                    log.debug(f"_import_next_file: {filename}")
-                    log.debug(
-                        f"remaining files: {[a.source_path for a in self.import_files_data]}"
-                    )
-                    self.signals.status_message_signal.emit(f"Importing {filename}", 10000)
-                    self._start_import(tfd)
-                except IndexError:
-                    log.debug("import_next_file: no files remaining in queue")
-                    break
+            # Get details for next file to import
+            path, tfd = self.import_files_data.popitem()
+            if tfd.import_this_file:
+                break
 
-    def _start_import(self, tfd: TrackFileData) -> None:
-        """
-        Start thread to import track
-        """
+        print(f"import_next_file {path=}")
 
-        filename = os.path.basename(tfd.source_path)
-        log.debug(f"_start_import({filename=})")
-
-        self.workers[tfd.source_path] = DoTrackImport(
-            import_file_path=tfd.source_path,
+        # Create and start a thread for processing
+        worker = DoTrackImport(
+            import_file_path=path,
             tags=tfd.tags,
             destination_path=tfd.destination_path,
             track_id=tfd.track_id,
         )
-        log.debug(f"{self.workers[tfd.source_path]=} created")
+        thread = QThread()
+        self.threads.append(thread)
 
-        self.workers[tfd.source_path].import_finished.connect(self.post_import_processing)
-        self.workers[tfd.source_path].finished.connect(lambda: self.cleanup_thread(tfd))
-        self.workers[tfd.source_path].finished.connect(self.workers[tfd.source_path].deleteLater)
+        # Move worker to thread
+        worker.moveToThread(thread)
 
-        self.workers[tfd.source_path].start()
+        # Connect signals and slots
+        thread.started.connect(worker.run)
+        thread.started.connect(lambda: print(f"Thread starting for {path=}"))
 
-    def cleanup_thread(self, tfd: TrackFileData) -> None:
+        worker.import_finished.connect(self.post_import_processing)
+        worker.import_finished.connect(thread.quit)
+        worker.import_finished.connect(lambda: print(f"Worker ended for {path=}"))
+
+        # Ensure cleanup only after thread is fully stopped
+        thread.finished.connect(lambda: self.cleanup_thread(thread, worker))
+        thread.finished.connect(lambda: print(f"Thread ended for {path=}"))
+
+        # Start the thread
+        print(f"Calling thread.start() for {path=}")
+        thread.start()
+
+    def cleanup_thread(self, thread, worker):
         """
         Remove references to finished threads/workers to prevent leaks.
         """
 
-        log.debug(f"cleanup_thread({tfd.source_path=})")
+        worker.deleteLater()
+        thread.deleteLater()
+        if thread in self.threads:
+            self.threads.remove(thread)
 
-        if tfd.source_path in self.workers:
-            del self.workers[tfd.source_path]
-        else:
-            log.debug(f"Couldn't find entry in self.workers: {tfd.source_path=}")
-
-        log.debug(f"After cleanup_thread: {self.workers.keys()=}")
-
-    def post_import_processing(self, source_path: str, track_id: int) -> None:
+    def post_import_processing(self, track_id: int) -> None:
         """
         If track already in playlist, refresh it else insert it
         """
 
-        log.debug(f"post_import_processing({source_path=}, {track_id=})")
+        log.debug(f"post_import_processing({track_id=})")
 
         if self.model_data:
             if self.model_data.base_model:
@@ -555,16 +548,16 @@ class FileImporter:
                     track_id, self.model_data.row_number
                 )
 
-        # Process next file(s)
-        self._import_next_file()
+        # Process next file
+        self.import_next_file()
 
 
-class DoTrackImport(QThread):
+class DoTrackImport(QObject):
     """
     Class to manage the actual import of tracks in a thread.
     """
 
-    import_finished = pyqtSignal(str, int)
+    import_finished = pyqtSignal(int)
 
     def __init__(
         self,
@@ -585,9 +578,6 @@ class DoTrackImport(QThread):
 
         self.signals = MusicMusterSignals()
 
-    def __repr__(self) -> str:
-        return f"<DoTrackImport(id={hex(id(self))}, import_file_path={self.import_file_path}"
-
     def run(self) -> None:
         """
         Either create track objects from passed files or update exising track
@@ -611,11 +601,11 @@ class DoTrackImport(QThread):
         if temp_file and os.path.exists(temp_file):
             os.unlink(temp_file)
 
-        self.signals.status_message_signal.emit(
-            f"Importing {os.path.basename(self.import_file_path)}", 5000
-        )
-
         with db.Session() as session:
+            self.signals.status_message_signal.emit(
+                f"Importing {os.path.basename(self.import_file_path)}", 5000
+            )
+
             if self.track_id == 0:
                 # Import new track
                 try:
@@ -640,9 +630,6 @@ class DoTrackImport(QThread):
                         if hasattr(track, key):
                             setattr(track, key, value)
                     track.path = self.destination_track_path
-                else:
-                    log.error(f"Unable to retrieve {self.track_id=}")
-                    return
             session.commit()
 
             helpers.normalise_track(self.destination_track_path)
@@ -650,7 +637,7 @@ class DoTrackImport(QThread):
             self.signals.status_message_signal.emit(
                 f"{os.path.basename(self.import_file_path)} imported", 10000
             )
-            self.import_finished.emit(self.import_file_path, track.id)
+            self.import_finished.emit(track.id)
 
 
 class PickMatch(QDialog):

app/helpers.py

@@ -200,9 +200,9 @@ def get_tags(path: str) -> Tags:
     try:
         tag = TinyTag.get(path)
     except FileNotFoundError:
-        raise ApplicationError(f"File not found: {path})")
+        raise ApplicationError(f"File not found: get_tags({path=})")
     except TinyTagException:
-        raise ApplicationError(f"Can't read tags in {path})")
+        raise ApplicationError(f"Can't read tags: get_tags({path=})")
 
     if (
         tag.title is None
@@ -210,7 +210,7 @@ def get_tags(path: str) -> Tags:
         or tag.bitrate is None
         or tag.duration is None
     ):
-        raise ApplicationError(f"Missing tags in {path})")
+        raise ApplicationError(f"Missing tags: get_tags({path=})")
 
     return Tags(
         title=tag.title,

app/log.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python3
 # Standard library imports
-from collections import defaultdict
 import logging
 import logging.config
 import logging.handlers
@@ -21,38 +20,15 @@ from config import Config
 class FunctionFilter(logging.Filter):
     """Filter to allow category-based logging to stderr."""
 
-    def __init__(self, module_functions: dict[str, list[str]]):
+    def __init__(self, functions: set[str]):
         super().__init__()
-
-        self.modules: list[str] = []
-        self.functions: defaultdict[str, list[str]] = defaultdict(list)
-
-        for module in module_functions.keys():
-            if module_functions[module]:
-                for function in module_functions[module]:
-                    self.functions[module].append(function)
-            else:
-                self.modules.append(module)
+        self.functions = functions
 
     def filter(self, record: logging.LogRecord) -> bool:
-        if not getattr(record, "levelname", None) == "DEBUG":
-            # Only prcess DEBUG messages
-            return False
-
-        module = getattr(record, "module", None)
-        if not module:
-            # No module in record
-            return False
-
-        # Process if this is a module we're tracking
-        if module in self.modules:
-            return True
-
-        # Process if this is a function we're tracking
-        if getattr(record, "funcName", None) in self.functions[module]:
-            return True
-
-        return False
+        return (
+            getattr(record, "funcName", None) in self.functions
+            and getattr(record, "levelname", None) == "DEBUG"
+        )
 
 
 class LevelTagFilter(logging.Filter):

app/logging.yaml

@@ -4,24 +4,18 @@ disable_existing_loggers: True
 formatters:
   colored:
     (): colorlog.ColoredFormatter
-    format: "%(log_color)s[%(asctime)s] %(filename)s.%(funcName)s:%(lineno)s %(blue)s%(message)s"
+    format: "%(log_color)s[%(asctime)s] %(filename)s:%(lineno)s %(message)s"
     datefmt: "%H:%M:%S"
   syslog:
     format: "[%(name)s] %(filename)s:%(lineno)s %(leveltag)s: %(message)s"
 
 filters:
   leveltag:
-    (): log.LevelTagFilter
+    (): newlogger.LevelTagFilter
   category_filter:
-    (): log.FunctionFilter
-    module_functions:
-      # Optionally additionally log some debug calls to stderr
-      # log all debug calls in a module:
-      #    module-name: []
-      # log debug calls for some functions in a module:
-      #    module-name:
-      #    - function-name-1
-      #    - function-name-2
+    (): newlogger.FunctionFilter
+    functions: !!set
+      fb: null
 
 handlers:
   stderr:

app/logging_tester.py

@@ -1,7 +1,5 @@
 #!/usr/bin/env python3
-from log import log
-
-
+from newlogger import log
 # Testing
 def fa():
     log.debug("fa Debug message")

app/musicmuster.py

@@ -860,7 +860,7 @@ class Window(QMainWindow, Ui_MainWindow):
             self.current.base_model,
             self.current_row_or_end()
         )
-        self.importer.start()
+        self.importer.do_import()
 
     def insert_header(self) -> None:
         """Show dialog box to enter header text and add to playlist"""

app/playlistmodel.py

@@ -1030,7 +1030,7 @@ class PlaylistModel(QAbstractTableModel):
                         log.debug(f"{self}: OBS scene changed to '{scene_name}'")
                         continue
                     except obswebsocket.exceptions.ConnectionFailure:
-                        log.warning(f"{self}: OBS connection refused")
+                        log.error(f"{self}: OBS connection refused")
                         return
 
     def previous_track_ended(self) -> None:
@@ -1151,7 +1151,6 @@ class PlaylistModel(QAbstractTableModel):
             ]:
                 if ts:
                     ts.update_playlist_and_row(session)
-            session.commit()
 
         self.update_track_times()