# -*- coding: utf-8 -*-
"""Small LLM output helpers."""

import json
import re
from typing import Any, Dict


_FENCED_JSON_RE = re.compile(r"```(?:json)?\s*([\s\S]*?)\s*```", re.IGNORECASE)


def extract_json_object(text: str) -> Dict[str, Any]:
    """Extract a JSON object from a model response."""
    if not text:
        return {}

    stripped = text.strip()
    fenced_match = _FENCED_JSON_RE.search(stripped)
    if fenced_match:
        stripped = fenced_match.group(1).strip()

    try:
        value = json.loads(stripped)
        return value if isinstance(value, dict) else {}
    except json.JSONDecodeError:
        pass

    start = stripped.find("{")
    end = stripped.rfind("}")
    if start >= 0 and end > start:
        try:
            value = json.loads(stripped[start:end + 1])
            return value if isinstance(value, dict) else {}
        except json.JSONDecodeError:
            return {}
    return {}


def compact_json(value: Any) -> str:
    return json.dumps(value, ensure_ascii=False, indent=2)