"""Phase 10.6 — Routing & Optimization schema (additive)."""
from alembic import op
from app.core.database import Base
import app.models  # noqa: F401

revision = "0007_phase_106_routing"
down_revision = "0006_phase_105_dispatch"
branch_labels = None
depends_on = None

_NEW_TABLES = (
    "route_plans",
    "route_stops",
    "optimization_runs",
)


def upgrade():
    bind = op.get_bind()
    Base.metadata.create_all(bind=bind)


def downgrade():
    bind = op.get_bind()
    for name in reversed(_NEW_TABLES):
        table = Base.metadata.tables.get(name)
        if table is not None:
            table.drop(bind=bind, checkfirst=True)
