app.py

# img_bot.py
import os, io, re, random, asyncio, logging, subprocess, base64
from urllib.parse import urljoin, quote_plus

import discord
import requests
import replicate
from transformers import pipeline as transformers_pipeline
from gradio_client import Client
from PIL import Image     # WEBP → PNG 변환용

# ────────────────── 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     # Replicate 미사용이지만 구조 유지

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

# ────────────────── 번역 파이프라인 ─────────────
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 영어 번역(비동기)."""
    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 클라이언트 ──────────
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
            )

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

        # Gradio 결과 → list / dict / str 중 첫 요소로 정규화
        if isinstance(result, list):
            result = result[0]

        # ───────────── URL 있으면 링크로 전송 ─────────────
        url = None
        if isinstance(result, dict):
            url = result.get("url")
            if url and url.startswith("/"):
                url = urljoin(GRADIO_URL, url)
        elif isinstance(result, str) and result.startswith(("http", "/")):
            url = result if result.startswith("http") else urljoin(GRADIO_URL, result)

        if url:
            await message.reply(content=url)   # Discord가 embed 미리보기
            return

        # ───────────── 첨부 파일 준비 ─────────────
        data = None
        # dict → path
        if isinstance(result, dict):
            path = result.get("path")
            if path:
                # Gradio 파일 다운로드 우선
                remote = urljoin(GRADIO_URL, f"/gradio_api/file={quote_plus(path)}")
                try:
                    data = requests.get(remote, timeout=10).content
                except Exception:
                    if os.path.isfile(path):
                        with open(path, "rb") as f:
                            data = f.read()
        # str → data URI
        elif isinstance(result, str) and result.startswith("data:"):
            try:
                b64 = re.sub(r"^data:image/[^;]+;base64,", "", result)
                data = base64.b64decode(b64)
            except Exception as e:
                logging.warning(f"base64 디코딩 실패: {e}")

        if not data:
            await message.reply("⚠️ 이미지를 전송할 수 없습니다.")
            return

        # ───────────── WEBP → PNG 변환 (미리보기용) ─────────────
        buf = io.BytesIO()
        try:
            Image.open(io.BytesIO(data)).convert("RGB").save(buf, format="PNG")
            buf.seek(0)
            await message.reply(files=[discord.File(buf, filename="image.png")])
        except Exception:
            # 변환 실패 시 원본 그대로
            await message.reply(files=[discord.File(io.BytesIO(data), filename="image.webp")])

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