"""Japanese -> English translation."""
from __future__ import annotations

from typing import Tuple

from src.config import TRANSLATION_SYSTEM_PROMPT
from src.model_loader import get_model_and_tokenizer
from src.generation import chat_generate


def translate(text: str) -> Tuple[str, str]:
    """Translate Japanese text to English.

    Returns (translation, status_message).
    """
    if not text or not text.strip():
        return "", ""

    model, tokenizer = get_model_and_tokenizer()
    messages = [
        {"role": "system", "content": TRANSLATION_SYSTEM_PROMPT},
        {"role": "user", "content": text.strip()},
    ]
    translation = chat_generate(
        model,
        tokenizer,
        messages,
        max_new_tokens=512,
        do_sample=False,
    )
    return translation, ""