import json


def to_markdown(result: dict) -> str:
    if "error" in result:
        return "# Deep Research\n\n**Error:** " + result["error"]

    lines = ["# Deep Research", "", "**Question:** " + result.get("question", ""), ""]
    lines += ["## Summary", result.get("summary", ""), ""]

    findings = result.get("findings", [])
    if findings:
        lines.append("## Findings")
        for i, f in enumerate(findings, 1):
            srcs = ", ".join(f.get("sources", []))
            lines += [
                f"### {i}. {f['claim']}  _({f['confidence']})_",
                f"{f.get('evidence', '')}",
                f"Sources: {srcs}",
                "",
            ]

    caveats = result.get("caveats")
    if caveats:
        lines += ["## Caveats", caveats, ""]

    oq = result.get("openQuestions")
    if oq:
        lines += ["## Open Questions"] + [f"- {q}" for q in oq] + [""]

    refuted = result.get("refuted", [])
    if refuted:
        lines.append("## Refuted (transparency)")
        for r in refuted:
            lines.append(f"- \"{r['claim']}\" (vote {r.get('vote', '')}, {r.get('source', '')})")
        lines.append("")

    lines += ["## Stats", "```json", json.dumps(result.get("stats", {}), ensure_ascii=False, indent=2), "```"]
    return "\n".join(lines)


def to_json(result: dict) -> str:
    return json.dumps(result, ensure_ascii=False, indent=2)