import json
import re
from pathlib import Path
from typing import Any, Iterable


def save_to_json(data: Any, filename: str | Path) -> None:
    path = Path(filename)
    path.parent.mkdir(parents=True, exist_ok=True)
    path.write_text(json.dumps(data, ensure_ascii=False, indent=2), encoding="utf-8")


def first_non_empty(values: Iterable[Any]) -> Any | None:
    for value in values:
        if value not in (None, "", [], {}, ()):
            return value
    return None


# Regex для VIN, lot, price.
VIN_RE = re.compile(r"\b([A-HJ-NPR-Z0-9]{17})\b", re.IGNORECASE)
LOT_RE = re.compile(r"\b(\d{7,10})\b")
PRICE_RE = re.compile(r"\$\s?([\d,]+(?:\.\d{1,2})?)")


def deep_find_key(obj, target_keys: set[str], max_depth: int = 64, _depth: int = 0) -> list:
    # Рекурсивно ищет значения по набору ключей в произвольном JSON-дереве.
    found = []
    if _depth >= max_depth:
        return found
    if isinstance(obj, dict):
        for key, value in obj.items():
            if key.lower() in target_keys:
                found.append(value)
            found.extend(deep_find_key(value, target_keys, max_depth=max_depth, _depth=_depth + 1))
    elif isinstance(obj, list):
        for item in obj:
            found.extend(deep_find_key(item, target_keys, max_depth=max_depth, _depth=_depth + 1))
    return found