app.py

import gradio as gr
from huggingface_hub import InferenceClient
from deep_translator import GoogleTranslator
from indic_transliteration import sanscript
from indic_transliteration.detect import detect as detect_script
from indic_transliteration.sanscript import transliterate
import langdetect
import re
import requests
import json
import base64
from PIL import Image
import io
import time

# Initialize clients
text_client = InferenceClient("HuggingFaceH4/zephyr-7b-beta")
SPACE_URL = "https://ijohn07-dalle-4k.hf.space"

# Add image style options
IMAGE_STYLES = {
    "3840 x 2160": "3840 x 2160",
    "2560 x 1440": "2560 x 1440",
    "Photo": "Photo",
    "Cinematic": "Cinematic",
    "Anime": "Anime",
    "3D Model": "3D Model",
    "No style": "(No style)"
}

def generate_image_space(prompt: str, style: str) -> Image.Image:
    """Generate an image using the DALLE-4K Space with specified style."""
    try:
        # First get the session hash
        response = requests.post(f"{SPACE_URL}/queue/join")
        session_hash = response.json().get('session_hash')
        
        # Modify prompt based on style
        if style != "(No style)":
            # Format the prompt according to the style
            if style in ["3840 x 2160", "2560 x 1440"]:
                # For resolution styles, add the resolution to the prompt
                prompt = f"{prompt}, {style} resolution"
            else:
                # For other styles, append the style to the prompt
                prompt = f"{prompt}, {style.lower()} style"
        
        # Send the generation request
        response = requests.post(f"{SPACE_URL}/run/predict", json={
            "data": [
                prompt,  # Prompt with style
                "",     # Negative prompt
                7.5,    # Guidance scale
                30,     # Steps
                "DPM++ SDE Karras",  # Scheduler
                False,  # High resolution
                False,  # Image to image
                None,   # Image upload
                1       # Batch size
            ],
            "session_hash": session_hash
        })
        
        # Poll for results
        while True:
            status_response = requests.post(f"{SPACE_URL}/queue/status", json={
                "session_hash": session_hash
            })
            status_data = status_response.json()
            
            if status_data.get('status') == 'complete':
                # Get the image data
                image_data = status_data['data']['image']
                # Convert base64 to PIL Image
                image_bytes = base64.b64decode(image_data.split(',')[1])
                image = Image.open(io.BytesIO(image_bytes))
                return image
            elif status_data.get('status') == 'error':
                raise Exception(f"Image generation failed: {status_data.get('error')}")
            
            time.sleep(1)  # Wait before polling again
            
    except Exception as e:
        print(f"Image generation error: {e}")
        return None

def romanized_to_bengali(text: str) -> str:
    """Convert romanized Bengali text to Bengali script."""
    bengali_mappings = {
        'ami': 'আমি',
        'tumi': 'তুমি',
        'apni': 'আপনি',
        'kemon': 'কেমন',
        'achen': 'আছেন',
        'acchen': 'আছেন',
        'bhalo': 'ভালো',
        'achi': 'আছি',
        'ki': 'কি',
        'kothay': 'কোথায়',
        'keno': 'কেন',
    }
    
    text_lower = text.lower()
    for roman, bengali in bengali_mappings.items():
        text_lower = re.sub(r'\b' + roman + r'\b', bengali, text_lower)
    
    if text_lower == text.lower():
        try:
            return transliterate(text, sanscript.ITRANS, sanscript.BENGALI)
        except:
            return text
            
    return text_lower

def respond(
    message,
    history: list[tuple[str, str]],
    system_message,
    max_tokens,
    temperature,
    top_p,
    image_style: str,  # New parameter for image style
):
    # First check for custom responses
    custom_response = check_custom_responses(message)
    if custom_response:
        yield custom_response
        return

    # Check if this is an image generation request
    if is_image_request(message):
        try:
            image = generate_image_space(message, image_style)
            if image:
                style_info = f" using {image_style} style" if image_style != "(No style)" else ""
                yield (image, f"Here's your generated image based on: {message}{style_info}")
                return
            else:
                yield "Sorry, I couldn't generate the image. Please try again."
                return
        except Exception as e:
            yield f"An error occurred while generating the image: {str(e)}"
            return

    # Rest of the code remains the same...
    translated_msg, original_lang, was_transliterated = translate_text(message)
    messages = [{"role": "system", "content": system_message}]
    for val in history:
        if val[0]:
            if len(val[0].split()) > 2:
                trans_user_msg, _, _ = translate_text(val[0])
                messages.append({"role": "user", "content": trans_user_msg})
            else:
                messages.append({"role": "user", "content": val[0]})
        if val[1]:
            messages.append({"role": "assistant", "content": val[1]})
    
    messages.append({"role": "user", "content": translated_msg})

    response = ""
    for message in text_client.chat_completion(
        messages,
        max_tokens=max_tokens,
        stream=True,
        temperature=temperature,
        top_p=top_p,
    ):
        token = message.choices[0].delta.content
        response += token

    if original_lang != 'en' and len(message.split()) > 2:
        try:
            translator = GoogleTranslator(source='en', target=original_lang)
            translated_response = translator.translate(response)
            yield translated_response
        except:
            yield response
    else:
        yield response

# Updated Gradio interface with image style selector
demo = gr.ChatInterface(
    respond,
    additional_inputs=[
        gr.Textbox(
            value="You are a friendly Chatbot who always responds in English unless the user specifically uses another language.",
            label="System message"
        ),
        gr.Slider(
            minimum=1,
            maximum=2048,
            value=2048,
            step=1,
            label="Max new tokens"
        ),
        gr.Slider(
            minimum=0.1,
            maximum=4.0,
            value=0.7,
            step=0.1,
            label="Temperature"
        ),
        gr.Slider(
            minimum=0.1,
            maximum=1.0,
            value=0.95,
            step=0.05,
            label="Top-p (nucleus sampling)"
        ),
        gr.Radio(
            choices=list(IMAGE_STYLES.values()),
            value="3840 x 2160",
            label="Image Style",
            info="Select the style for generated images"
        ),
    ]
)

if __name__ == "__main__":
    demo.launch(share=True)