from flask import Flask, request, jsonify, send_file, render_template_string, make_response
import requests
import io
import os
import random
from PIL import Image
from deep_translator import GoogleTranslator
app = Flask(__name__)
API_URL = "https://api-inference.huggingface.co/models/CompVis/stable-diffusion-v1-4"
API_TOKEN = os.getenv("HF_READ_TOKEN")
headers = {"Authorization": f"Bearer {API_TOKEN}"}
timeout = 300 # タイムアウトを300秒に設定
# Function to query the API and return the generated image
def query(prompt, negative_prompt="", steps=35, cfg_scale=7, sampler="DPM++ 2M Karras", seed=-1, strength=0.7, width=1024, height=1024):
if not prompt:
return None, "Prompt is required"
key = random.randint(0, 999)
# Translate the prompt from Russian to English if necessary
prompt = GoogleTranslator(source='ru', target='en').translate(prompt)
print(f'Generation {key} translation: {prompt}')
# Add some extra flair to the prompt
prompt = f"{prompt} | ultra detail, ultra elaboration, ultra quality, perfect."
print(f'Generation {key}: {prompt}')
payload = {
"inputs": prompt,
"is_negative": False,
"steps": steps,
"cfg_scale": cfg_scale,
"seed": seed if seed != -1 else random.randint(1, 1000000000),
"strength": strength,
"parameters": {
"width": width,
"height": height
}
}
for attempt in range(3): # 最大3回の再試行
try:
response = requests.post(API_URL, headers=headers, json=payload, timeout=timeout)
if response.status_code != 200:
return None, f"Error: Failed to get image. Status code: {response.status_code}, Details: {response.text}"
image_bytes = response.content
image = Image.open(io.BytesIO(image_bytes))
return image, None
except requests.exceptions.Timeout:
if attempt < 2: # 最後の試行でない場合は再試行
print("Timeout occurred, retrying...")
continue
return None, "Error: The request timed out. Please try again."
except requests.exceptions.RequestException as e:
return None, f"Request Exception: {str(e)}"
except Exception as e:
return None, f"Error when trying to open the image: {e}"
# Content-Security-Policyヘッダーを設定するための関数
@app.after_request
def add_security_headers(response):
response.headers['Content-Security-Policy'] = (
"default-src 'self'; "
"connect-src 'self' ^https?:\/\/[\w.-]+\.[\w.-]+(\/[\w.-]*)*(\?[^\s]*)?$"
"img-src 'self' data:; "
"style-src 'self' 'unsafe-inline'; "
"script-src 'self' 'unsafe-inline'; "
)
return response
# HTML template for the index page
index_html = """
FLUX.1-Dev Image Generator
FLUX.1-Dev Image Generator
Generated Image:
![Generated Image]()
Draw on Canvas:
"""
@app.route('/')
def index():
return render_template_string(index_html)
@app.route('/generate', methods=['GET'])
def generate_image():
prompt = request.args.get("prompt", "")
negative_prompt = request.args.get("negative_prompt", "")
steps = int(request.args.get("steps", 35))
cfg_scale = float(request.args.get("cfgs", 7))
sampler = request.args.get("sampler", "DPM++ 2M Karras")
strength = float(request.args.get("strength", 0.7))
seed = int(request.args.get("seed", -1))
width = int(request.args.get("width", 1024))
height = int(request.args.get("height", 1024))
image, error = query(prompt, negative_prompt, steps, cfg_scale, sampler, seed, strength, width, height)
if error:
return jsonify({"error": error}), 400
img_bytes = io.BytesIO()
image.save(img_bytes, format='PNG')
img_bytes.seek(0)
return send_file(img_bytes, mimetype='image/png')
if __name__ == "__main__":
app.run(host='0.0.0.0', port=7860)