app.py

import gradio as gr
import numpy as np
import time
import requests
import json
import os
import tempfile
import logging
from PIL import Image
from io import BytesIO

odnapi = os.getenv("odnapi_url")
fetapi = os.getenv("fetapi_url")
auth_token = os.getenv("auth_token")

# Setup a logger
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)

def fetch_image(url):
    try:
        response = requests.get(url)
        return Image.open(BytesIO(response.content))
    except requests.exceptions.RequestException as e:
        logger.error(f"Failed to fetch image")
        raise

def split_image(img):
    width, height = img.size
    width_cut = width // 2
    height_cut = height // 2
    return [
        img.crop((0, 0, width_cut, height_cut)),
        img.crop((width_cut, 0, width, height_cut)),
        img.crop((0, height_cut, width_cut, height)),
        img.crop((width_cut, height_cut, width, height))
    ]

def save_image(img, suffix='.png'):
    with tempfile.NamedTemporaryFile(delete=False, suffix=suffix) as tmp:
        img.save(tmp, 'PNG')
        return tmp.name

def download_and_split_image(url):
    img = fetch_image(url)
    images = split_image(img)
    return [save_image(i) for i in images]

def niji_api(prompt):
    try:
        response = requests.post(fetapi, headers={'Content-Type': 'application/json'}, data=json.dumps({'msg': prompt}))
        response.raise_for_status()  # Check for HTTP errors.
    except requests.exceptions.RequestException as e:
        logger.error(f"Failed to make POST request")
        raise ValueError("Invalid Response") 
    data = response.json()
    message_id = data['messageId']
    progress = 0
    while progress < 100:
        try:
            response = requests.get(f'{odnapi}/message/{message_id}', headers={'Authorization': auth_token})
            response.raise_for_status()
        except requests.exceptions.RequestException as e:
            logger.warning(f"Failure in getting message response")
            continue
        data = response.json()
        progress = data.get('progress', 0)
        if progress_image_url:= data.get('progressImageUrl'):
            yield [(img, f"{progress}% done") for img in download_and_split_image(progress_image_url)]
        time.sleep(1)
    # Process the final image urls
    image_urls = data['response']['imageUrls']
    yield [(iurl, f"image {idx}/4") for idx, iurl in enumerate(image_urls)]

with gr.Blocks() as demo:
    gr.HTML('''
<div style="text-align: center; max-width: 650px; margin: 0 auto;">
  <div style="
        display: inline-flex;
        gap: 0.8rem;
        font-size: 1.75rem;
        justify-content: center;
        margin-bottom: 10px;
      ">
    <h1 style="font-weight: 900; align-items: center; margin-bottom: 7px; margin-top: 20px;">
      MidJourney / NijiJourney Playground 🎨
    </h1>
  </div>
  <div>
    <p style="align-items: center; margin-bottom: 7px;">
      Demo for the <a href="https://MidJourney.com/" target="_blank">MidJourney</a>, add a text prompt for what you want to draw
  </div>
</div>
    ''')  
    with gr.Column(variant="panel"):
        with gr.Row():
            text = gr.Textbox(
                label="Enter your prompt",
                value="1girl,long hair,looking at viewer,kawaii,serafuku --s 250 --niji 5",
                max_lines=1,
                container=False,
            )
            btn = gr.Button("Generate image", scale=0)
        gallery = gr.Gallery(label="Generated images", show_label=False, elem_id="gallery", height="4096")
    btn.click(niji_api, text, gallery)

demo.launch(debug=True, enable_queue=True)