import jaconv  # Japanese: katakana/hiragana to romaji
from hanja import translate as hanja_to_hangul
from hangul_romanize import Transliterate
from hangul_romanize.rule import RevisedRomanization

transliterator = Transliterate(RevisedRomanization())

def canonical_form(text: str, source_lang: str) -> str:
    """Convert a name to a canonical Latin-ish form for comparison."""
    if source_lang == "ja":
        text = jaconv.kata2hepburn(jaconv.hira2kata(text))
    elif source_lang == "zh":
        text = hanja_to_hangul(text)
        source_lang = "ko"

    if source_lang == "ko":
        text = transliterator.translit(text)

    return text.lower().strip()