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from flask import Flask, request, jsonify
from gradio_client import Client, handle_file
import base64
import io
import requests
from PIL import Image

app = Flask(__name__)

# client = Client("multimodalart/flux-style-shaping")

def get_random_api_key():
    keys = os.getenv("KEYS", "").split(",")
    if keys and keys[0]:  # Check if KEYS is set and not empty
        return random.choice(keys).strip()
    else:
        raise ValueError("API keys not found. Please set the KEYS environment variable.")

def translate_to_english(prompt):
    language = detect(prompt)
    if language != 'en':
        prompt = GoogleTranslator(source=language, target='en').translate(prompt)
    return prompt

def handle_image_input(image_data):
    """Функция для обработки разных форматов входных изображений."""
    if image_data.startswith("http://") or image_data.startswith("https://"):
        try:
            response = requests.get(image_data, stream=True)
            response.raise_for_status()  # Проверяем, что запрос успешен
            image = Image.open(io.BytesIO(response.content))
            image_bytes = io.BytesIO()
            image.save(image_bytes, format="PNG")  # Сохраняем в PNG для единообразия
            image_bytes = image_bytes.getvalue()
            return handle_file(image_bytes)
        except requests.exceptions.RequestException as e:
            print(f"Ошибка при загрузке изображения по URL: {e}")
            return None
    elif image_data.startswith("data:image"):  # Base64
        try:
            header, encoded = image_data.split(',', 1)
            image_bytes = base64.b64decode(encoded)
            return handle_file(image_bytes)
        except Exception as e:
            print(f"Ошибка при декодировании base64: {e}")
            return None
    else: # Предполгаем, что это просто путь к файлу
        try:
            with open(image_data, "rb") as f:
                image_bytes = f.read()
            return handle_file(image_bytes)
        except Exception as e:
            print(f"Ошибка при открытии файла: {e}")
            return None


@app.route('/generate_image/', methods=['GET'])
def generate_image():
    prompt = request.args.get('prompt')
    image1_data = request.args.get('image1')
    image2_data = request.args.get('image2')
    depth_strength = request.args.get('depth_strength', default=15, type=float)
    style_strength = request.args.get('style_strength', default=0.5, type=float)

    if not prompt or not image1_data or not image2_data:
        return jsonify({"error": "Missing required parameters: prompt, image1, and image2."}), 400

    structure_image = handle_image_input(image1_data)
    style_image = handle_image_input(image2_data)

    if not structure_image or not style_image:
        return jsonify({"error": "Failed to process one or both of the input images."}), 400

    prompt = translate_to_english(prompt) if prompt else ""
    
    try:
        client = Client("multimodalart/flux-style-shaping", hf_token=get_random_api_key())
        result = client.predict(
            prompt=prompt,
            structure_image=structure_image,
            style_image=style_image,
            depth_strength=depth_strength,
            style_strength=style_strength,
            api_name="/generate_image"
        )
        
        # Преобразуем результат в base64
        with open(result["path"], "rb") as image_file:
            encoded_result = base64.b64encode(image_file.read()).decode('utf-8')

        return jsonify({"generated_image": encoded_result})
    except Exception as e:
       return jsonify({"error": f"Error during image generation: {str(e)}"}), 500


if __name__ == '__main__':
    app.run(host='0.0.0.0', port=7860, debug=True)