# img_bot.py
import discord, os, io, re, random, asyncio, logging, requests, replicate, subprocess, base64
from urllib.parse import urljoin, quote_plus
from transformers import pipeline as transformers_pipeline
from gradio_client import Client

# ── 환경 변수 ────────────────────────────────────────────────
TOKEN       = os.getenv("DISCORD_TOKEN")
CHANNEL_ID  = int(os.getenv("DISCORD_CHANNEL_ID"))
REPL_TOKEN  = (os.getenv("OPENAI_API_KEY") or "").strip()
HF_TOKEN    = (os.getenv("HF_TOKEN") or "").strip()

if not TOKEN or not CHANNEL_ID:
    raise RuntimeError("DISCORD_TOKEN 과 DISCORD_CHANNEL_ID 환경 변수를 모두 지정하세요.")
if not REPL_TOKEN:
    raise RuntimeError("OPENAI_API_KEY 에 Replicate Personal Access Token 값을 넣어주세요.")

os.environ["REPLICATE_API_TOKEN"] = REPL_TOKEN            # 구조 유지 (Replicate 미사용)

# ── Gradio 서버 ─────────────────────────────────────────────
GRADIO_URL  = "http://211.233.58.201:7971"
GRADIO_API  = "/process_and_save_image"

# ── 번역 파이프라인 (CPU) ───────────────────────────────────
translator = transformers_pipeline(
    "translation",
    model="Helsinki-NLP/opus-mt-ko-en",
    device=-1,
    **({"token": HF_TOKEN} if HF_TOKEN else {})
)

async def ko2en_async(text: str) -> str:
    """한글 포함 시 비동기 영어 번역."""
    if not re.search(r"[가-힣]", text):
        return text
    loop = asyncio.get_running_loop()
    try:
        return await loop.run_in_executor(
            None,
            lambda: translator(text, max_length=256, num_beams=1)[0]["translation_text"].strip()
        )
    except Exception as e:
        logging.warning(f"번역 실패, 원문 사용: {e}")
        return text

# ── 로깅 ────────────────────────────────────────────────────
logging.basicConfig(level=logging.INFO,
    format="%(asctime)s [%(levelname)s] %(message)s",
    handlers=[logging.StreamHandler()])

# ── Discord 인텐트 ──────────────────────────────────────────
intents = discord.Intents.default()
intents.message_content = True

class ImageBot(discord.Client):
    async def on_ready(self):
        logging.info(f"Logged in as {self.user} (id={self.user.id})")
        try:
            subprocess.Popen(["python", "web.py"])
            logging.info("web.py server has been started.")
        except Exception as e:
            logging.warning(f"web.py 실행 실패: {e}")

    async def on_message(self, message: discord.Message):
        if message.author.id == self.user.id or message.channel.id != CHANNEL_ID:
            return

        prompt_raw = message.content.strip()
        if not prompt_raw:
            return

        prompt_en = await ko2en_async(prompt_raw)
        await message.channel.typing()

        # ── Gradio 호출 ────────────────────────────────────
        def generate_image():
            client = Client(GRADIO_URL)
            return client.predict(
                height=768,
                width=768,
                steps=30,
                scales=3.5,
                prompt=prompt_en,
                seed=random.randint(0, 2**32 - 1),
                api_name=GRADIO_API
            )  # ❗ 리스트나 dict·str 그대로 반환

        try:
            img_info = await asyncio.get_running_loop().run_in_executor(None, generate_image)
            logging.info(f"Gradio result type={type(img_info)} → {img_info}")
        except Exception as e:
            logging.error(f"Gradio API error: {e}")
            await message.reply("⚠️ 이미지 생성 실패!")
            return

        # ── Discord 파일 준비 ──────────────────────────────
        data = None
        filename = "generated.webp"

        def download(url: str) -> bytes | None:
            try:
                return requests.get(url, timeout=10).content
            except Exception as err:
                logging.warning(f"URL 다운로드 실패({url}): {err}")
                return None

        # ① `img_info` 가 리스트면 첫 요소 사용
        if isinstance(img_info, list) and img_info:
            img_info = img_info[0]

        # ② dict
        if isinstance(img_info, dict):
            # url 우선
            url = img_info.get("url")
            if url:
                if url.startswith("data:"):
                    try:
                        data = base64.b64decode(re.sub(r"^data:image/[^;]+;base64,", "", url))
                    except Exception as e:
                        logging.warning(f"base64 디코딩 실패: {e}")
                else:
                    if url.startswith("/"):
                        url = urljoin(GRADIO_URL, url)
                    data = download(url)
            # path 보조
            if data is None:
                path = img_info.get("path")
                if path:
                    # 원격 Gradio 파일 end-point
                    remote_url = urljoin(GRADIO_URL, f"/gradio_api/file={quote_plus(path)}")
                    data = download(remote_url) or (open(path, "rb").read() if os.path.isfile(path) else None)

        # ③ str (로컬 경로/URL/data URI)
        elif isinstance(img_info, str):
            s = img_info.strip()
            if s.startswith("data:"):
                try:
                    data = base64.b64decode(re.sub(r"^data:image/[^;]+;base64,", "", s))
                except Exception as e:
                    logging.warning(f"base64 디코딩 실패: {e}")
            elif s.startswith("http"):
                data = download(s)
            else:
                # 원격 파일로 간주
                remote_url = urljoin(GRADIO_URL, f"/gradio_api/file={quote_plus(s)}")
                data = download(remote_url) or (open(s, "rb").read() if os.path.isfile(s) else None)

        # ── Discord 전송 ──────────────────────────────────
        if data:
            await message.reply(files=[discord.File(io.BytesIO(data), filename=filename)])
        else:
            await message.reply("⚠️ 이미지를 전송할 수 없습니다.")

# ── 실행 ────────────────────────────────────────────────────
if __name__ == "__main__":
    replicate.Client(api_token=REPL_TOKEN)  # 구조 유지
    ImageBot(intents=intents).run(TOKEN)