Videre

linedance-app/local/local_db.py

@@ -259,10 +259,11 @@ def upsert_song(song_data: dict) -> str:
             song_id = existing["id"]
             conn.execute("""
                 UPDATE songs SET
-                    title=?, artist=?, album=?, bpm=?, duration_sec=?,
+                    library_id=?, title=?, artist=?, album=?, bpm=?, duration_sec=?,
                     file_format=?, file_modified_at=?, file_missing=0, extra_tags=?
                 WHERE id=?
             """, (
+                song_data.get("library_id"),
                 song_data.get("title", ""),
                 song_data.get("artist", ""),
                 song_data.get("album", ""),

linedance-app/local/tag_reader.py

@@ -346,3 +346,46 @@ def read_dances_from_file(path: str | Path) -> list[str]:
     """Læser kun danse fra en fil — hurtigere end fuld read_tags()."""
     tags = read_tags(path)
     return tags.get("dances", [])
+
+
+# ── BPM-analyse ───────────────────────────────────────────────────────────────
+
+def analyze_bpm(path: str | Path) -> float | None:
+    """
+    Analysér BPM fra lydfilen ved hjælp af librosa.
+    Returnerer BPM som float eller None ved fejl.
+    Tager 2-5 sekunder per sang — kør i baggrundstråd.
+    """
+    try:
+        import librosa
+        # Indlæs kun de første 60 sekunder for hastighed
+        y, sr = librosa.load(str(path), duration=60.0, mono=True)
+        tempo, _ = librosa.beat.beat_track(y=y, sr=sr)
+        # librosa returnerer array i nyere versioner
+        if hasattr(tempo, "__len__"):
+            bpm = float(tempo[0]) if len(tempo) > 0 else 0.0
+        else:
+            bpm = float(tempo)
+        return round(bpm, 1) if bpm > 0 else None
+    except ImportError:
+        print("librosa ikke installeret — installer med: pip install librosa")
+        return None
+    except Exception as e:
+        print(f"BPM-analyse fejl for {path}: {e}")
+        return None
+
+
+def analyze_and_save_bpm(path: str | Path, song_id: str) -> float | None:
+    """Analysér BPM og gem i SQLite. Returnerer målt BPM."""
+    bpm = analyze_bpm(path)
+    if bpm and bpm > 0:
+        try:
+            from local.local_db import get_db
+            with get_db() as conn:
+                conn.execute(
+                    "UPDATE songs SET bpm=? WHERE id=? AND (bpm IS NULL OR bpm=0)",
+                    (int(round(bpm)), song_id)
+                )
+        except Exception as e:
+            print(f"BPM gem fejl: {e}")
+    return bpm