"""Medication reconciliation agent."""

from __future__ import annotations

from app.common.types import PolyGuardState
from app.knowledge.drug_catalog import canonicalize_drug_name


class MedRecAgent:
    name = "MedRecAgent"

    def run(self, state: PolyGuardState) -> dict:
        normalized = []
        duplicates = set()
        seen = set()
        for med in state.patient.medications:
            med.drug = canonicalize_drug_name(med.drug)
            normalized.append(med.drug)
            if med.drug in seen:
                duplicates.add(med.drug)
            seen.add(med.drug)
        return {"normalized_meds": normalized, "duplicates": sorted(duplicates)}