"""Explanation agent."""

from __future__ import annotations

from app.common.types import PolyGuardAction, PolyGuardState


class ExplainerAgent:
    name = "ExplainerAgent"

    def run(self, state: PolyGuardState, action: PolyGuardAction, critic_report: dict) -> dict:
        return {
            "explanation": (
                f"Action {action.action_type.value} selected for mode {action.mode.value}. "
                f"Burden score={state.burden_score:.3f}, meds={len(state.patient.medications)}. "
                f"Critic legal={critic_report.get('legal', False)}."
            ),
            "grounded_facts": {
                "burden_score": state.burden_score,
                "polypharmacy_count": len(state.patient.medications),
            },
        }