"""Toy Broker Gateway Adapter for ArbSphere MVP.

Accepts a PlanDelta and prints a routing decision. In a real system this
would orchestrate cross-venue order routing and monitor per-order metadata.
"""

from __future__ import annotations

from arbsphere.primitives import PlanDelta


def route_plan(plan: PlanDelta) -> dict:
    # Minimal placeholder routing: just acknowledge receipt and echo plan size
    routing = {
        "status": "accepted",
        "legs": len(plan.delta),
        "timestamp": plan.timestamp,
        "author": plan.author,
    }
    return routing