import torch
from transformers import IdeficsForVisionText2Text, AutoProcessor
from PIL import Image
import gradio as gr

model_id = "mrm8488/idefics-9b-ft-describe-diffusion-bf16"
device = "cuda" if torch.cuda.is_available() else "cpu"

model = IdeficsForVisionText2Text.from_pretrained(model_id, torch_dtype=torch.bfloat16)
processor = AutoProcessor.from_pretrained(config.base_model_name_or_path)

def predict(prompt, image_url, max_length):
    image = processor.image_processor.fetch_images(image_url)
    prompts = [[image, prompt]]

    inputs = processor(prompts[0], return_tensors="pt").to(device)

    generated_ids = model.generate(**inputs, max_length=128)
    generated_text = processor.batch_decode(generated_ids, skip_special_tokens=True)[0]
    print(generated_text)
    return generated_text



title = "Midjourney-like Image Captioning with IDEFICS"
description = "Gradio Demo for generating Midjourney like captions (describe functionality) with IDEFICS"
#article = "<p style='text-align: center'><a href='https://github.com/OFA-Sys/OFA' target='_blank'>OFA Github " \
          "Repo</a></p> "
#examples = [['beatles.jpeg'], ['aurora.jpeg'], ['good_luck.png'], ['pokemons.jpg'], ['donuts.jpg']]
io = gr.Interface(fn=image_caption, 
                  #inputs=gr.inputs.Image(type='pil'),
                  inputs=[
                      gr.inputs.Textbox(value="Describe the following image:"),
                      gr.inputs.Textbox(label="image URL", placeholder="Insert the URL of the image to be described"),
                      gr.inputs.Slider(label="Max tokens", value=64, max=128, min=16, step=8)
                  ]
                  outputs=gr.outputs.Textbox(label="IDEFICS Description"),
                  title=title, description=description
                  allow_flagging=False, allow_screenshot=False)
io.launch(show_errors=True)