Mappehåndtering

linedance-app/ui/bpm_worker.py

@@ -0,0 +1,69 @@
+"""
+bpm_worker.py — QThread til BPM-analyse i baggrunden.
+"""
+import sqlite3
+from PyQt6.QtCore import QThread, pyqtSignal
+
+
+class BpmScanWorker(QThread):
+    progress = pyqtSignal(int, int)   # done, total
+    finished = pyqtSignal(int)        # antal analyseret
+
+    def __init__(self, library_id: int, db_path: str,
+                 scan_all: bool = False):
+        super().__init__()
+        self._library_id = library_id
+        self._db_path    = db_path
+        self._scan_all   = scan_all
+
+    def cancel(self):
+        self.requestInterruption()
+        # Afbryd hurtigt ved at sætte et flag
+        self._cancelled = True
+
+    def run(self):
+        import time
+        self._cancelled = False
+        try:
+            from local.tag_reader import analyze_bpm
+            conn = sqlite3.connect(self._db_path)
+            conn.row_factory = sqlite3.Row
+
+            if self._scan_all:
+                songs = conn.execute(
+                    "SELECT id, local_path FROM songs "
+                    "WHERE library_id=? AND file_missing=0",
+                    (self._library_id,)
+                ).fetchall()
+            else:
+                songs = conn.execute(
+                    "SELECT id, local_path FROM songs "
+                    "WHERE library_id=? AND file_missing=0 "
+                    "AND (bpm IS NULL OR bpm=0)",
+                    (self._library_id,)
+                ).fetchall()
+
+            total = len(songs)
+            done  = 0
+
+            for song in songs:
+                if self._cancelled or self.isInterruptionRequested():
+                    break
+                try:
+                    bpm = analyze_bpm(song["local_path"])
+                    if bpm and bpm > 0:
+                        conn.execute(
+                            "UPDATE songs SET bpm=? WHERE id=?",
+                            (int(round(bpm)), song["id"])
+                        )
+                        conn.commit()
+                except Exception:
+                    pass
+                done += 1
+                self.progress.emit(done, total)
+                time.sleep(0.01)  # Yield så GUI ikke hænger
+
+            conn.close()
+            self.finished.emit(done)
+        except Exception as e:
+            self.finished.emit(0)