main.py

import streamlit as st
import os
import requests
import base64
from PIL import Image
from io import BytesIO
import replicate
from stability_sdk import client
import stability_sdk.interfaces.gooseai.generation.generation_pb2 as generation

Image.MAX_IMAGE_PIXELS = None


# Configure your API keys here
CLIPDROP_API_KEY = '1143a102dbe21628248d4bb992b391a49dc058c584181ea72e17c2ccd49be9ca69ccf4a2b97fc82c89ff1029578abbea'
STABLE_DIFFUSION_API_KEY = 'sk-GBmsWR78MmCSAWGkkC1CFgWgE6GPgV00pNLJlxlyZWyT3QQO'
ESRGAN_API_KEY = 'sk-GBmsWR78MmCSAWGkkC1CFgWgE6GPgV00pNLJlxlyZWyT3QQO'

# Set up environment variable for Replicate API Token
os.environ['REPLICATE_API_TOKEN'] = 'r8_Tm3LQMS81QaGXzzdGVRyUCOQ3cuNd1i1sJlqp'  # Replace with your actual API token

def generate_image_from_text(prompt):
    r = requests.post('https://clipdrop-api.co/text-to-image/v1',
        files = {
            'prompt': (None, prompt, 'text/plain')
        },
        headers = { 'x-api-key': CLIPDROP_API_KEY }
    )
    
    if r.ok:
        return r.content
    else:
        r.raise_for_status()

def upscale_image_esrgan(image_bytes):
    # Set up environment variables
    os.environ['ESRGAN_API_KEY'] = ESRGAN_API_KEY

    # Set up the connection to the API
    stability_api = client.StabilityInference(
        key=os.environ['ESRGAN_API_KEY'],
        upscale_engine="esrgan-v1-x2plus",
        verbose=True,
    )

    # Open the image from bytes
    img = Image.open(BytesIO(image_bytes))

    # Call the upscale API
    answers = stability_api.upscale(init_image=img)

    # Process the response
    upscaled_img_bytes = None
    for resp in answers:
        for artifact in resp.artifacts:
            if artifact.type == generation.ARTIFACT_IMAGE:
                upscaled_img = Image.open(BytesIO(artifact.binary))
                upscaled_img_bytes = BytesIO()
                upscaled_img.save(upscaled_img_bytes, format='PNG')
                upscaled_img_bytes = upscaled_img_bytes.getvalue()
    
    return upscaled_img_bytes

def further_upscale_image(image_bytes):
    # Ensure environment variable is set correctly
    print("Replicate API token: ", os.environ['REPLICATE_API_TOKEN'])

    # Save the image bytes to a temporary file
    temp_file_name = "temp.png"
    with open(temp_file_name, 'wb') as temp_file:
        temp_file.write(image_bytes)

    # Run the GFPGAN model
    try:
        print("Running GFPGAN model...")
        output = replicate.run(
            "tencentarc/gfpgan:9283608cc6b7be6b65a8e44983db012355fde4132009bf99d976b2f0896856a3",
            input={"img": open(temp_file_name, "rb"), "version": "v1.4", "scale": 16}
        )
        print("Model output: ", output)
    except Exception as e:
        print("Error running GFPGAN model: ", e)
        raise e

    # Get the image data from the output URI
    try:
        print("Fetching image data from output URI...")
        response = requests.get(output)
    except Exception as e:
        print("Error fetching image data from output URI: ", e)
        raise e

    # Open and save the image
    try:
        print("Saving upscaled image...")
        img = Image.open(BytesIO(response.content))
        output_file = "upscaled.png"
        img.save(output_file)  # Save the upscaled image
    except Exception as e:
        print("Error saving upscaled image: ", e)
        raise e

    # Create a function to make download link
    def create_download_link(file, filename):
        with open(file, 'rb') as f:
            bytes = f.read()
            b64 = base64.b64encode(bytes).decode()
            href = f'<a href="data:file/octet-stream;base64,{b64}" download="{filename}">Download File</a>'
            return href

    return create_download_link(output_file, "upscaled_image.png")

def main():
    st.title("Image Generation and Upscaling")
    st.write("Enter a text prompt and an image will be generated and upscaled.")

    prompt = st.text_input("Enter a textual prompt to generate an image...")
    
    if prompt:
        st.success("Generating image from text prompt...")
        image_bytes = generate_image_from_text(prompt)
        
        st.success("Upscaling image with ESRGAN...")
        upscaled_image_bytes = upscale_image_esrgan(image_bytes)
        
        st.success("Further upscaling image with GFPGAN...")
        download_link = further_upscale_image(upscaled_image_bytes)
        
        st.markdown(download_link, unsafe_allow_html=True)

if __name__ == "__main__":
    main()