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import json
import os
import time
import uuid
import tempfile
from PIL import Image
import gradio as gr
import base64
import mimetypes
import logging

from google import genai
from google.genai import types

# .env ํŒŒ์ผ์— ์ €์žฅ๋œ ํ™˜๊ฒฝ๋ณ€์ˆ˜ ๋กœ๋“œ (python-dotenv ์„ค์น˜ ํ•„์š”: pip install python-dotenv)
from dotenv import load_dotenv
load_dotenv()

# ๋กœ๊น… ์„ค์ • (๋กœ๊ทธ ๋ ˆ๋ฒจ: DEBUG)
logging.basicConfig(level=logging.DEBUG,
                    format='%(asctime)s - %(levelname)s - %(message)s')
logger = logging.getLogger(__name__)


def save_binary_file(file_name, data):
    logger.debug(f"ํŒŒ์ผ์— ์ด์ง„ ๋ฐ์ดํ„ฐ ์ €์žฅ ์ค‘: {file_name}")
    with open(file_name, "wb") as f:
        f.write(data)
    logger.debug(f"ํŒŒ์ผ ์ €์žฅ ์™„๋ฃŒ: {file_name}")


def generate(text, file_name, background_file=None, style_file=None, model="gemini-2.0-flash-exp-image-generation"):
    logger.debug(f"generate ํ•จ์ˆ˜ ์‹œ์ž‘ - ํ…์ŠคํŠธ: '{text}', ํŒŒ์ผ๋ช…: '{file_name}', ๋ชจ๋ธ: '{model}'")

    try:
        # API ํ‚ค๋Š” ํ™˜๊ฒฝ๋ณ€์ˆ˜์—์„œ ๋ถˆ๋Ÿฌ์˜ด
        effective_api_key = os.environ.get("GEMINI_API_KEY")
        if effective_api_key:
            logger.debug("ํ™˜๊ฒฝ๋ณ€์ˆ˜์—์„œ API ํ‚ค ๋ถˆ๋Ÿฌ์˜ด")
        else:
            logger.error("API ํ‚ค๊ฐ€ ํ™˜๊ฒฝ๋ณ€์ˆ˜์— ์„ค์ •๋˜์ง€ ์•Š์•˜์Šต๋‹ˆ๋‹ค.")
            raise ValueError("API ํ‚ค๊ฐ€ ํ•„์š”ํ•ฉ๋‹ˆ๋‹ค.")

        client = genai.Client(api_key=effective_api_key)
        logger.debug("Gemini ํด๋ผ์ด์–ธํŠธ ์ดˆ๊ธฐํ™” ์™„๋ฃŒ.")

        # ์›๋ณธ, ๋ฐฐ๊ฒฝ, ์Šคํƒ€์ผ ์ด๋ฏธ์ง€๋ฅผ ๊ฐ๊ฐ ์—…๋กœ๋“œ (์กด์žฌํ•˜๋Š” ๊ฒฝ์šฐ)
        uploaded_files = []
        uploaded_files.append(client.files.upload(file=file_name))
        logger.debug(f"์›๋ณธ ํŒŒ์ผ ์—…๋กœ๋“œ ์™„๋ฃŒ. URI: {uploaded_files[0].uri}, MIME ํƒ€์ž…: {uploaded_files[0].mime_type}")

        if background_file is not None:
            bg_file = client.files.upload(file=background_file)
            uploaded_files.append(bg_file)
            logger.debug(f"๋ฐฐ๊ฒฝ ํŒŒ์ผ ์—…๋กœ๋“œ ์™„๋ฃŒ. URI: {bg_file.uri}, MIME ํƒ€์ž…: {bg_file.mime_type}")
        if style_file is not None:
            style_uploaded = client.files.upload(file=style_file)
            uploaded_files.append(style_uploaded)
            logger.debug(f"์Šคํƒ€์ผ ํŒŒ์ผ ์—…๋กœ๋“œ ์™„๋ฃŒ. URI: {style_uploaded.uri}, MIME ํƒ€์ž…: {style_uploaded.mime_type}")

        # ์ปจํ…์ธ  ๊ฐ์ฒด ์ƒ์„ฑ: ์—…๋กœ๋“œํ•œ ์ด๋ฏธ์ง€๋“ค์„ ์ˆœ์„œ๋Œ€๋กœ(์›๋ณธ, ๋ฐฐ๊ฒฝ, ์Šคํƒ€์ผ) ์ถ”๊ฐ€ํ•˜๊ณ  ๋งˆ์ง€๋ง‰์— ํ…์ŠคํŠธ ํ”„๋กฌํ”„ํŠธ ์ถ”๊ฐ€
        parts = []
        # ์›๋ณธ ์ด๋ฏธ์ง€ ํŒŒํŠธ
        parts.append(
            types.Part.from_uri(
                file_uri=uploaded_files[0].uri,
                mime_type=uploaded_files[0].mime_type,
            )
        )
        # ๋ฐฐ๊ฒฝ ์ด๋ฏธ์ง€ ํŒŒํŠธ (์กด์žฌ ์‹œ)
        if background_file is not None:
            parts.append(
                types.Part.from_uri(
                    file_uri=uploaded_files[1].uri,
                    mime_type=uploaded_files[1].mime_type,
                )
            )
        # ์Šคํƒ€์ผ ์ด๋ฏธ์ง€ ํŒŒํŠธ (์กด์žฌ ์‹œ)
        if style_file is not None:
            # ๋ฐฐ๊ฒฝ์ด ์—†๋Š” ๊ฒฝ์šฐ uploaded_files[1]๊ฐ€ ์Šคํƒ€์ผ ์ด๋ฏธ์ง€๊ฐ€ ๋จ์— ์ฃผ์˜
            style_index = 2 if background_file is not None else 1
            parts.append(
                types.Part.from_uri(
                    file_uri=uploaded_files[style_index].uri,
                    mime_type=uploaded_files[style_index].mime_type,
                )
            )
        # ๋งˆ์ง€๋ง‰์œผ๋กœ ํ…์ŠคํŠธ ํŒŒํŠธ ์ถ”๊ฐ€
        parts.append(types.Part.from_text(text=text))

        contents = [
            types.Content(
                role="user",
                parts=parts,
            ),
        ]
        logger.debug(f"์ปจํ…์ธ  ๊ฐ์ฒด ์ƒ์„ฑ ์™„๋ฃŒ: {contents}")

        generate_content_config = types.GenerateContentConfig(
            temperature=1,
            top_p=0.95,
            top_k=40,
            max_output_tokens=8192,
            response_modalities=[
                "image",
                "text",
            ],
            response_mime_type="text/plain",
        )
        logger.debug(f"์ƒ์„ฑ ์„ค์ •: {generate_content_config}")

        with tempfile.NamedTemporaryFile(suffix=".png", delete=False) as tmp:
            temp_path = tmp.name
            logger.debug(f"์ž„์‹œ ํŒŒ์ผ ์ƒ์„ฑ๋จ: {temp_path}")

            response_stream = client.models.generate_content_stream(
                model=model,
                contents=contents,
                config=generate_content_config,
            )

            logger.debug("์‘๋‹ต ์ŠคํŠธ๋ฆผ ์ฒ˜๋ฆฌ ์‹œ์ž‘...")
            for chunk in response_stream:
                if not chunk.candidates or not chunk.candidates[0].content or not chunk.candidates[0].content.parts:
                    logger.warning("chunk์— ํ›„๋ณด, ์ปจํ…์ธ , ๋˜๋Š” ํŒŒํŠธ๊ฐ€ ์—†์Šต๋‹ˆ๋‹ค. ๊ฑด๋„ˆ๋œ๋‹ˆ๋‹ค.")
                    continue

                inline_data = chunk.candidates[0].content.parts[0].inline_data
                if inline_data:
                    save_binary_file(temp_path, inline_data.data)
                    logger.info(f"MIME ํƒ€์ž… {inline_data.mime_type}์˜ ํŒŒ์ผ์ด ์ €์žฅ๋จ: {temp_path} (ํ”„๋กฌํ”„ํŠธ: {text})")
                else:
                    logger.info(f"์ˆ˜์‹ ๋œ ํ…์ŠคํŠธ: {chunk.text}")
                    print(chunk.text)

                logger.debug(f"Raw chunk: {chunk}")

        del uploaded_files
        logger.debug("์—…๋กœ๋“œ๋œ ํŒŒ์ผ ์ •๋ณด ์‚ญ์ œ ์™„๋ฃŒ.")
        return temp_path

    except Exception as e:
        logger.exception("์ด๋ฏธ์ง€ ์ƒ์„ฑ ์ค‘ ์˜ค๋ฅ˜ ๋ฐœ์ƒ:")
        return None  # ์˜ค๋ฅ˜ ๋ฐœ์ƒ ์‹œ None ๋ฐ˜ํ™˜


def process_image_and_prompt(original_pil, prompt, background_pil=None, style_pil=None):
    logger.debug(f"process_image_and_prompt ํ•จ์ˆ˜ ์‹œ์ž‘ - ํ”„๋กฌํ”„ํŠธ: '{prompt}'")
    try:
        # ์›๋ณธ ์ด๋ฏธ์ง€ ์ €์žฅ
        with tempfile.NamedTemporaryFile(suffix=".png", delete=False) as tmp:
            original_path = tmp.name
            original_pil.save(original_path)
            logger.debug(f"์›๋ณธ ์ด๋ฏธ์ง€ ์ €์žฅ ์™„๋ฃŒ: {original_path}")

        # ๋ฐฐ๊ฒฝ ์ด๋ฏธ์ง€ ์ €์žฅ (์ œ๊ณต๋œ ๊ฒฝ์šฐ)
        background_path = None
        if background_pil is not None:
            with tempfile.NamedTemporaryFile(suffix=".png", delete=False) as tmp_bg:
                background_path = tmp_bg.name
                background_pil.save(background_path)
                logger.debug(f"๋ฐฐ๊ฒฝ ์ด๋ฏธ์ง€ ์ €์žฅ ์™„๋ฃŒ: {background_path}")

        # ์Šคํƒ€์ผ ์ด๋ฏธ์ง€ ์ €์žฅ (์ œ๊ณต๋œ ๊ฒฝ์šฐ)
        style_path = None
        if style_pil is not None:
            with tempfile.NamedTemporaryFile(suffix=".png", delete=False) as tmp_style:
                style_path = tmp_style.name
                style_pil.save(style_path)
                logger.debug(f"์Šคํƒ€์ผ ์ด๋ฏธ์ง€ ์ €์žฅ ์™„๋ฃŒ: {style_path}")

        input_text = prompt
        model = "gemini-2.0-flash-exp-image-generation"

        gemma_edited_image_path = generate(text=input_text,
                                           file_name=original_path,
                                           background_file=background_path,
                                           style_file=style_path,
                                           model=model)

        if gemma_edited_image_path:
            logger.debug(f"์ด๋ฏธ์ง€ ์ƒ์„ฑ ์™„๋ฃŒ. ๊ฒฝ๋กœ: {gemma_edited_image_path}")
            result_img = Image.open(gemma_edited_image_path)
            if result_img.mode == "RGBA":
                result_img = result_img.convert("RGB")
            return [result_img]
        else:
            logger.error("generate ํ•จ์ˆ˜์—์„œ None ๋ฐ˜ํ™˜๋จ.")
            return []  # ์˜ค๋ฅ˜ ์‹œ ๋นˆ ๋ฆฌ์ŠคํŠธ ๋ฐ˜ํ™˜

    except Exception as e:
        logger.exception("process_image_and_prompt ํ•จ์ˆ˜์—์„œ ์˜ค๋ฅ˜ ๋ฐœ์ƒ:")
        return []  # ์˜ค๋ฅ˜ ์‹œ ๋นˆ ๋ฆฌ์ŠคํŠธ ๋ฐ˜ํ™˜


# --- Gradio ์ธํ„ฐํŽ˜์ด์Šค ๊ตฌ์„ฑ ---
with gr.Blocks() as demo:
    gr.HTML(
        """
        <div style='display: flex; align-items: center; justify-content: center; gap: 20px'>
            <div style="background-color: var(--block-background-fill); border-radius: 8px">
                <img src="https://www.gstatic.com/lamda/images/gemini_favicon_f069958c85030456e93de685481c559f160ea06b.png" style="width: 100px; height: 100px;">
            </div>
            <div>
                <h1>Gemini๋ฅผ ์ด์šฉํ•œ ์ด๋ฏธ์ง€ ํŽธ์ง‘</h1>
                <p>Gemini API ํ‚ค๋Š” ํ™˜๊ฒฝ๋ณ€์ˆ˜(GEMINI_API_KEY)๋กœ ์„ค์ •๋˜์–ด ์žˆ์Šต๋‹ˆ๋‹ค.</p>
            </div>
        </div>
        """
    )
    gr.Markdown("์›๋ณธ, ๋ฐฐ๊ฒฝ, ์Šคํƒ€์ผ ์ด๋ฏธ์ง€๋ฅผ ์—…๋กœ๋“œํ•˜๊ณ , ํŽธ์ง‘ํ•  ๋‚ด์šฉ์„ ์ž…๋ ฅํ•˜์„ธ์š”.")

    with gr.Row():
        with gr.Column():
            original_input = gr.Image(type="pil", label="์›๋ณธ ์ด๋ฏธ์ง€", image_mode="RGBA")
            background_input = gr.Image(type="pil", label="๋ฐฐ๊ฒฝ ์ด๋ฏธ์ง€", image_mode="RGBA")
            style_input = gr.Image(type="pil", label="์Šคํƒ€์ผ ์ด๋ฏธ์ง€", image_mode="RGBA")
            prompt_input = gr.Textbox(
                lines=2,
                placeholder="ํŽธ์ง‘ํ•  ๋‚ด์šฉ์„ ์ž…๋ ฅํ•˜์„ธ์š”...",
                label="ํŽธ์ง‘ ํ”„๋กฌํ”„ํŠธ"
            )
            submit_btn = gr.Button("์ด๋ฏธ์ง€ ํŽธ์ง‘ ์‹คํ–‰")
        with gr.Column():
            output_gallery = gr.Gallery(label="ํŽธ์ง‘ ๊ฒฐ๊ณผ")

    submit_btn.click(
        fn=process_image_and_prompt,
        inputs=[original_input, prompt_input, background_input, style_input],
        outputs=output_gallery,
    )

# --- ํ…Œ์ŠคํŠธ ์ฝ”๋“œ ---
# ํ…Œ์ŠคํŠธ์šฉ ๋”๋ฏธ ์ด๋ฏธ์ง€ (์‹ค์ œ ์ด๋ฏธ์ง€๋กœ ๋Œ€์ฒด ๊ฐ€๋Šฅ)
dummy_original = Image.new("RGBA", (100, 100), color="red")
dummy_background = Image.new("RGBA", (100, 100), color="green")
dummy_style = Image.new("RGBA", (100, 100), color="blue")
dummy_prompt = "์ด๋ฏธ์ง€ ํŽธ์ง‘: ์›๋ณธ์€ ๋นจ๊ฐ•, ๋ฐฐ๊ฒฝ์€ ์ดˆ๋ก, ์Šคํƒ€์ผ์€ ํŒŒ๋ž‘"

logger.info("process_image_and_prompt ํ•จ์ˆ˜๋ฅผ ์ง์ ‘ ํ˜ธ์ถœํ•ฉ๋‹ˆ๋‹ค...")
result = process_image_and_prompt(dummy_original, dummy_prompt, dummy_background, dummy_style)

if result:
    logger.info(f"์ง์ ‘ ํ˜ธ์ถœ ์„ฑ๊ณต. ๊ฒฐ๊ณผ: {result}")
else:
    logger.error("์ง์ ‘ ํ˜ธ์ถœ ์‹คํŒจ.")

demo.launch(share=True)