🐛 | Code quality fixes

- config.py: move 'import shutil' to module level
- player.py: unify type hints, narrow except, add debug log
- discord_rpc.py: replace broad except Exception with specific types
- gui.py: remove unused import; replace lambda closures with method refs; fix closure scope bug; extract _populate_list_page() to remove duplicate code; add public accessors; make flush_volume public; add AudioVisualizer.reset_activity()
- tests: replace unused _f variable with Path.touch()

config.py

@@ -1,6 +1,7 @@
 """Tunetti configuration — stored at ~/.config/tunetti/config.json ."""
 
 import json
+import shutil
 from pathlib import Path
 
 # ── Config file location (XDG compliant) ──────────────────────────────────
@@ -42,7 +43,6 @@ def _migrate_legacy() -> None:
         if old_db_path.parent == Path(__file__).parent and old_db_path.exists():
             new_db_path = CONFIG_DIR / "music_history.db"
             if not new_db_path.exists():
-                import shutil
                 shutil.copy2(str(old_db_path), str(new_db_path))
             old["db_path"] = str(new_db_path)
 

discord_rpc.py

@@ -116,7 +116,7 @@ class DiscordRPC:
             log.warning("Discord not running – RPC unavailable")
             self._connected = False
             return False
-        except Exception as exc:
+        except (OSError, RuntimeError, DiscordNotFound) as exc:
             log.debug("Discord RPC connect failed: %s", exc)
             self._connected = False
             return False
@@ -125,7 +125,7 @@ class DiscordRPC:
         if self._rpc:
             try:
                 self._rpc.close()
-            except Exception:
+            except (OSError, RuntimeError):
                 pass
         self._rpc = None
         self._connected = False
@@ -139,7 +139,7 @@ class DiscordRPC:
             if self._connected and self._rpc is not None:
                 try:
                     self._rpc.clear()
-                except Exception:
+                except (OSError, RuntimeError):
                     self._connected = False
             return
 
@@ -162,7 +162,7 @@ class DiscordRPC:
                 start=start,
                 end=end_ts,
             )
-        except Exception as exc:
+        except (OSError, RuntimeError) as exc:
             log.debug("RPC update failed: %s", exc)
             self._connected = False
 

gui.py

@@ -9,7 +9,6 @@ import logging
 import sys
 import math
 from pathlib import Path
-from typing import Optional
 
 # ═══════════════════════════════════════════════════════════════════════════
 # Qt imports are guarded so the module can be imported for its pure helper
@@ -169,7 +168,10 @@ def _load_thumbnail(video_id: str, thumb_url: str,
     nam = _get_thumbnail_nam()
     reply = nam.get(QNetworkRequest(QUrl(thumb_url)))
 
-    def _on_downloaded():
+    def _on_downloaded(reply=reply, nam=nam, cache_path=cache_path,
+                          art_label=art_label, size=size,
+                          style_pass=style_pass, style_fail=style_fail,
+                          video_id=video_id):
         # The label may have been deleted (e.g. search results refreshed)
         # while the network request was in flight — guard against that.
         try:
@@ -408,14 +410,17 @@ class SongItemWidget(QWidget):
         # flooding the connection when many items appear at once (e.g. search).
         # Guard with try/except because the widget may be deleted before the
         # timer fires (search results refreshed, etc.).
+        self._deferred_song = song
         if _cached_thumb_path(self._video_id).exists():
             self._load_art(self._art, song)
         else:
-            QTimer.singleShot(500, lambda: self._deferred_load_art(song))
+            QTimer.singleShot(500, self._load_deferred_art)
 
-    def _deferred_load_art(self, song: dict) -> None:
+    def _load_deferred_art(self) -> None:
         try:
-            self._load_art(self._art, song)
+            song = self._deferred_song
+            if song:
+                self._load_art(self._art, song)
         except RuntimeError:
             pass  # widget was deleted
 
@@ -589,6 +594,10 @@ class AudioVisualizer(QWidget):
     * Idle "breathing" animation when audio is playing but no buffer arrives.
     """
 
+    def reset_activity(self) -> None:
+        """Reset the last activity counter (called on seek)."""
+        self._last_activity = 0
+
     # Windows XP marquee loading pattern — sliding 4-bar block
     _LOADING_PATTERN = [0.55, 0.85, 0.85, 0.55]
 
@@ -1280,7 +1289,8 @@ class PlaybackBar(QWidget):
         self._progress.setEnabled(False)
         self._visualizer.set_playing(False)
         self._visualizer.set_loading(False)
-        QTimer.singleShot(4000, lambda: self._clear_error())
+        # Use a weak-bound method ref so the timer doesn't keep self alive.
+        QTimer.singleShot(4000, self._clear_error)
 
     def _clear_error(self) -> None:
         """Restore the "Not playing" text after an error."""
@@ -1392,8 +1402,11 @@ class PlaybackBar(QWidget):
             # to the new audio section instead of decaying through idle.
             if hasattr(self, "_band_peaks"):
                 self._band_peaks = [0.001] * len(self._band_peaks)
-            self._visualizer._last_activity = 0
+            self._visualizer.reset_activity()
-            QTimer.singleShot(200, lambda: setattr(self, "_updating_progress", False))
+            QTimer.singleShot(200, self._clear_seek_flag)
+
+    def _clear_seek_flag(self) -> None:
+        self._updating_progress = False
 
     def _toggle_mute(self) -> None:
         if self._player.volume() > 0:
@@ -1431,9 +1444,7 @@ class PlaybackBar(QWidget):
             self._vol_save_timer = QTimer(self)
             self._vol_save_timer.setSingleShot(True)
             self._vol_save_timer.setInterval(500)
-            self._vol_save_timer.timeout.connect(
+            self._vol_save_timer.timeout.connect(self.flush_volume)
-                lambda: save_volume(self._saved_volume)
-            )
         self._vol_save_timer.start()
 
     # ── Visualizer data feeding ──
@@ -1597,7 +1608,7 @@ class PlaybackBar(QWidget):
 
         return result
 
-    def _flush_volume(self) -> None:
+    def flush_volume(self) -> None:
         """Immediately persist the current volume, bypassing the debounce timer."""
         if hasattr(self, "_vol_save_timer") and self._vol_save_timer.isActive():
             self._vol_save_timer.stop()
@@ -1814,6 +1825,7 @@ class SearchPage(QWidget):
         btn = QPushButton("⋯  Show more")
         btn.setCursor(Qt.CursorShape.PointingHandCursor)
         btn.setFixedHeight(38)
+        btn.setProperty("category", category)
         btn.setStyleSheet("""
             QPushButton {
                 border: none;
@@ -1829,9 +1841,17 @@ class SearchPage(QWidget):
                 color: #a5b4fc;
             }
         """)
-        btn.clicked.connect(lambda: self._toggle_expand(category))
+        btn.clicked.connect(self._on_show_more_clicked)
         self._results_layout.addWidget(btn)
 
+    def _on_show_more_clicked(self) -> None:
+        btn = self.sender()
+        if btn is None:
+            return
+        category = btn.property("category")
+        if isinstance(category, str):
+            self._toggle_expand(category)
+
     def _toggle_expand(self, category: str) -> None:
         if category == "videos":
             self._videos_expanded = True
@@ -2194,7 +2214,7 @@ class SettingsDialog(QDialog):
 
     def _on_visualizer_toggled(self, enabled: bool) -> None:
         save_setting("visualizer_enabled", enabled)
-        viz = self._main_window._visualizer
+        viz = self._main_window.get_visualizer()
         if enabled:
             viz.setVisible(True)
             viz.setFixedHeight(44)
@@ -2207,13 +2227,13 @@ class SettingsDialog(QDialog):
     def _on_discord_toggled(self, enabled: bool) -> None:
         save_setting("discord_rpc_enabled", enabled)
         if enabled:
-            self._main_window.rpc.start()
+            self._main_window.get_rpc().start()
             # Re-send current song if one is playing.
             current = self._main_window.player.get_current()
             if current:
-                self._main_window.rpc.update_song(current)
+                self._main_window.get_rpc().update_song(current)
         else:
-            self._main_window.rpc.stop()
+            self._main_window.get_rpc().stop()
 
 
 # ── Helpers ───────────────────────────────────────────────────────────────────
@@ -2825,36 +2845,8 @@ class TunettiWindow(QMainWindow):
     # ── Favourites ──
 
     def _refresh_favourites(self) -> None:
-        lst = self._fav_page._list
-        lst.clear()
         rows = self.db.get_favourites()
-        if not rows:
+        self._populate_list_page(self._fav_page, rows, default_fav=True)
-            lst.addItem("No favourites yet.")
-            self._fav_page._all_songs = []
-            return
-        songs_data = []
-        for r in rows:
-            song = {
-                "videoId": r["video_id"],
-                "title": r["title"],
-                "artists": json.loads(r["artists"]) if r["artists"] else [],
-                "album": json.loads(r["album"]) if r["album"] else None,
-                "duration": r["duration"],
-                "duration_label": _fmt_ms(r["duration"] * 1000) if r["duration"] else "?",
-                "thumbnail": r["thumbnail"] or "",
-                "_is_fav": True,
-            }
-            songs_data.append(song)
-            widget = SongItemWidget(song, is_fav=True)
-            widget.play_requested.connect(self._play_video)
-            widget.fav_toggled.connect(self._on_fav_toggled)
-            widget.queue_next_requested.connect(self._queue_next)
-            item = QListWidgetItem(lst)
-            item.setSizeHint(widget.sizeHint())
-            item.setFlags(item.flags() | Qt.ItemFlag.ItemIsSelectable)
-            lst.addItem(item)
-            lst.setItemWidget(item, widget)
-        self._fav_page._all_songs = songs_data
 
     @Slot(str, bool)
     def _on_fav_toggled(self, video_id: str, new_state: bool) -> None:
@@ -2863,15 +2855,27 @@ class TunettiWindow(QMainWindow):
     # ── History ──
 
     def _refresh_history(self) -> None:
-        lst = self._hist_page._list
-        lst.clear()
         rows = self.db.get_history(50)
+        self._populate_list_page(self._hist_page, rows, default_fav=False)
+
+    def _populate_list_page(self, page, rows, default_fav: bool = False) -> None:
+        """Populate a QListWidget-based page from DB rows.
+
+        Shared by _refresh_favourites and _refresh_history to avoid
+        duplicate widget-building code.
+        """
+        lst = page._list
+        lst.clear()
+
         if not rows:
-            lst.addItem("No play history yet.")
+            placeholder = "No favourites yet." if default_fav else "No play history yet."
-            self._hist_page._all_songs = []
+            lst.addItem(placeholder)
+            page._all_songs = []
             return
+
         songs_data = []
         for r in rows:
+            is_fav = default_fav or bool(r["is_favourite"])
             song = {
                 "videoId": r["video_id"],
                 "title": r["title"],
@@ -2880,10 +2884,10 @@ class TunettiWindow(QMainWindow):
                 "duration": r["duration"],
                 "duration_label": _fmt_ms(r["duration"] * 1000) if r["duration"] else "?",
                 "thumbnail": r["thumbnail"] or "",
-                "_is_fav": bool(r["is_favourite"]),
+                "_is_fav": is_fav,
             }
             songs_data.append(song)
-            widget = SongItemWidget(song, is_fav=bool(r["is_favourite"]))
+            widget = SongItemWidget(song, is_fav=is_fav)
             widget.play_requested.connect(self._play_video)
             widget.fav_toggled.connect(self._on_fav_toggled)
             widget.queue_next_requested.connect(self._queue_next)
@@ -2892,7 +2896,7 @@ class TunettiWindow(QMainWindow):
             item.setFlags(item.flags() | Qt.ItemFlag.ItemIsSelectable)
             lst.addItem(item)
             lst.setItemWidget(item, widget)
-        self._hist_page._all_songs = songs_data
+        page._all_songs = songs_data
 
     # ── Stats ──
 
@@ -2939,6 +2943,17 @@ class TunettiWindow(QMainWindow):
         except Exception as exc:
             log.error("_poll_minimized error: %s", exc)
 
+    # ── Public accessors (for child dialogs) ──
+
+    def get_visualizer(self) -> AudioVisualizer:
+        return self._visualizer
+
+    def get_rpc(self) -> DiscordRPC:
+        return self.rpc
+
+    def get_player(self) -> AudioPlayer:
+        return self.player
+
     # ── Cleanup ──
 
     def resizeEvent(self, event) -> None:
@@ -2962,7 +2977,7 @@ class TunettiWindow(QMainWindow):
 
     def closeEvent(self, event) -> None:
         # Flush any pending volume save before closing
-        self._playback._flush_volume()
+        self._playback.flush_volume()
         self.player.shutdown()
         self.rpc.stop()
         self.db.close()

player.py

@@ -39,6 +39,9 @@ import shutil
 import threading
 from typing import Optional
 
+# In this module we use Optional[str] for consistency
+# with Qt signal/slot typing conventions.
+
 import yt_dlp
 
 # ═══════════════════════════════════════════════════════════════════════════
@@ -75,7 +78,7 @@ VERBOSE:   bool = False    # enable yt-dlp debug output
 # Temp-file housekeeping
 # ═══════════════════════════════════════════════════════════════════════════════
 
-_TUNETTI_TMP: str | None = None
+_TUNETTI_TMP: Optional[str] = None
 
 
 def _tmp_dir() -> str:
@@ -166,6 +169,8 @@ class DownloadWorker(QObject):
     @Slot(int, dict)
     def _do_download(self, task_id: int, song: dict) -> None:
         """Entry point — invoked on the worker thread."""
+        log.debug("Download starting: task_id=%d, video_id=%s",
+                   task_id, song.get("videoId") or song.get("video_id", ""))
         self._task_id = task_id
         self._cancelled = False
 
@@ -232,7 +237,7 @@ class DownloadWorker(QObject):
                 if not self._cancelled:
                     self.download_succeeded.emit(task_id, resolved)
 
-        except Exception as exc:
+        except (OSError, RuntimeError) as exc:
             log.error("Download error for %s: %s", video_id, exc)
             self._cleanup_path(temp_path)
             with self._lock:

tests/test_player_helpers.py

@@ -4,6 +4,7 @@ import os
 import struct
 import math
 import tempfile
+from pathlib import Path
 
 import pytest
 
@@ -239,8 +240,9 @@ class TestStaleFiles:
         td = tempfile.mkdtemp(prefix="tunetti_test_")
         monkeypatch.setattr("player._TUNETTI_TMP", td)
 
-        with open(os.path.join(td, "vid123.mp3"), "w") as _f:
+        # Create an empty file to verify it's excluded
-            pass  # empty; _f unused intentionally
+        empty_path = os.path.join(td, "vid123.mp3")
+        Path(empty_path).touch()
 
         result = _stale_files("vid123")
         assert result == []