# mcp/openfda.py

import httpx

OPENFDA_DRUG_EVENT = "https://api.fda.gov/drug/event.json"

async def fetch_drug_safety(drug: str, max_results: int = 3):
    """Fetch recent adverse event reports for the drug from OpenFDA."""
    params = {"search": f'patient.drug.medicinalproduct:"{drug}"', "limit": max_results}
    async with httpx.AsyncClient() as client:
        try:
            resp = await client.get(OPENFDA_DRUG_EVENT, params=params)
            results = resp.json().get("results", [])
            output = []
            for ev in results:
                output.append({
                    "safety_report_id": ev.get("safetyreportid"),
                    "serious": ev.get("serious"),
                    "reactions": [r["reactionmeddrapt"] for r in ev.get("patient", {}).get("reaction", [])],
                    "receivedate": ev.get("receivedate"),
                })
            return output
        except Exception:
            return []