Check for duplicate title on import

Fixes #80

app/songdb.py

@@ -66,15 +66,27 @@ def create_track_from_file(session, path, verbose=False):
         str = f"Importing {path}"
         INFO(str)
         INFO("-" * len(str))
-    track = Tracks.get_or_create(session, path)
-    if verbose:
         INFO("Get track info...")
     t = get_music_info(path)
-    track.title = t['title']
-    track.artist = t['artist']
+    title = t['title']
+    artist = t['artist']
     if verbose:
-        INFO(f"    Title: \"{track.title}\"")
-        INFO(f"    Artist: \"{track.artist}\"")
+        INFO(f"    Title: \"{title}\"")
+        INFO(f"    Artist: \"{artist}\"")
+    # Check for duplicate
+    tracks = Tracks.search_titles(session, title)
+    if tracks:
+        print("Found the following possible matches:")
+        for track in tracks:
+            print(f'"{track.title}" by {track.artist}')
+            response = input("Continue [c] or abort [a]?")
+            if not response:
+                return
+            if response[0].lower() not in ['c', 'y']:
+                return
+    track = Tracks.get_or_create(session, path)
+    track.title = title
+    track.artist = artist
     track.duration = int(round(
         t['duration'], Config.MILLISECOND_SIGFIGS) * 1000)