"""Lightweight adapters for broker and exchange gateways.

These are minimal stubs that map internal decision signals to canonical signals
exposed to external systems. They are intentionally small MVP implementations.
"""
from __future__ import annotations
from typing import Dict, Any


class BrokerGatewayAdapter:
    def __init__(self, config: Dict[str, Any] = None):
        self.config = config or {}

    def adapt_order(self, order_event: Dict[str, Any]) -> Dict[str, Any]:
        # Example mapping: extract a few key signals from an internal order event
        return {
            "type": "order_decision",
            "order_id": order_event.get("order_id"),
            "venue": order_event.get("venue"),
            "signal": order_event.get("signal", "unknown"),
        }


class ExchangeGatewayAdapter:
    def __init__(self, config: Dict[str, Any] = None):
        self.config = config or {}

    def adapt_execution(self, execution_event: Dict[str, Any]) -> Dict[str, Any]:
        return {
            "type": "execution_report",
            "order_id": execution_event.get("order_id"),
            "price": execution_event.get("price"),
            "latency_ms": execution_event.get("latency_ms"),
        }