from __future__ import annotations


class GazeboAdapter:
    """Placeholder Gazebo adapter for simulation-based testing."""

    def __init__(self, tls_config: dict | None = None) -> None:
        self.tls_config = tls_config or {}

    def publish_signal(self, contract_id: str, signals: dict) -> bool:
        # In a full implementation, publish to Gazebo topics or services
        return True

    def subscribe_signals(self, contract_id: str) -> dict:
        # Return a minimal, empty signals payload for the MVP bootstrap
        return {}