"""Action and observation types for the null-control environment."""

from typing import Any

from openenv.core.env_server.types import Action, Observation
from pydantic import ConfigDict, Field


class NullAction(Action):
    """Any reply ends the episode. Extra keys are accepted so no reply is a schema error."""

    model_config = ConfigDict(extra="allow")

    answer: Any = Field(default="", description="Ignored, any JSON value. Any action ends the episode.")


class NullObservation(Observation):
    """Short text prompt; reward and done come from the base Observation."""

    prompt: str = Field(default="", description="Instruction shown to the policy")