"""Add indexes for scan queries

Revision ID: 002
Revises: 001
Create Date: 2025-11-14 00:30:00.000000

"""
from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision = '002'
down_revision = '001'
branch_labels = None
depends_on = None


def upgrade() -> None:
    """Add database indexes for better query performance."""
    # Add index on scans.status for filtering
    # Note: index on scans.timestamp already exists from migration 001
    op.create_index('ix_scans_status', 'scans', ['status'], unique=False)


def downgrade() -> None:
    """Remove indexes."""
    op.drop_index('ix_scans_status', table_name='scans')