Don't allow duplicate track paths

app/models.py

@@ -508,7 +508,7 @@ class Tracks(Base):
     start_gap = Column(Integer, index=False)
     fade_at = Column(Integer, index=False)
     silence_at = Column(Integer, index=False)
-    path = Column(String(2048), index=False, nullable=False)
+    path = Column(String(2048), index=False, nullable=False, unique=True)
     mtime = Column(Float, index=True)
     playlistrows = relationship("PlaylistRows", back_populates="track")
     playlists = association_proxy("playlistrows", "playlist")

migrations/versions/fe2e127b3332_don_t_allow_duplicate_track_paths.py

@@ -0,0 +1,28 @@
+"""Don't allow duplicate track paths
+
+Revision ID: fe2e127b3332
+Revises: 0c604bf490f8
+Create Date: 2022-08-21 19:46:35.768659
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'fe2e127b3332'
+down_revision = '0c604bf490f8'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_unique_constraint(None, 'tracks', ['path'])
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint(None, 'tracks', type_='unique')
+    # ### end Alembic commands ###