from huggingface_hub import from_pretrained_keras
import keras_cv
import gradio as gr

keras.mixed_precision.set_global_policy("mixed_float16")
# load keras model
resolution = 512
dreambooth_model = keras_cv.models.StableDiffusion(
        img_width=resolution, img_height=resolution, jit_compile=True, 
    )
loaded_diffusion_model = from_pretrained_keras("keras-dreambooth/pink-floyd-division-bell")
dreambooth_model._diffusion_model = loaded_diffusion_model


def generate_images(prompt: str, num_imgs_to_gen: int, num_steps: int):
    """
    This function is used to generate images using our fine-tuned keras dreambooth stable diffusion model.
    Args:
        prompt (str): The text input given by the user based on which images will be generated.
        num_imgs_to_gen (int): The number of images to be generated using given prompt.
        num_steps (int): The number of denoising steps
    Returns:
        generated_img (List): List of images that were generated using the model
    """
    generated_img = dreambooth_model.text_to_image(
        prompt, batch_size=num_imgs_to_gen,
        num_steps=num_steps,
    )
   
    return generated_img
    

with gr.Blocks() as demo:
    gr.HTML("<h2 style=\"font-size: 2em; font-weight: bold\" align=\"center\">Keras Dreambooth - Pink Floyd Division Bell Demo</h2>")
    
    gr.Markdown("This model has been fine tuned to learn the concept of Division Bell from Pink Floyd's famous album `The Division Bell`")
    with gr.Row():
        with gr.Column():
            prompt = gr.Textbox(label="prompt")
            samples = gr.Slider(label="No. of Images",value=1)
            num_steps = gr.Slider(label="Inference Steps",value=50)
            run = gr.Button(value="Run")
        with gr.Column():
            gallery = gr.Gallery(show_label=False)

    run.click(generate_images, inputs=[prompt,samples, num_steps], outputs=gallery)
    
    gr.Examples([["pink floyd division bell album cover with a starry night on Mars background", 1,50],
                ["Flower vase inspired by pink floyd division bell",1, 50],
                ["Pendant jewellery in the style of pink floyd division bell", 1,50]], 
                [prompt,samples,num_steps], gallery, generate_images, cache_examples=False)

    gr.Markdown('\n Demo created by: <a href=\"https://huggingface.co/shivi/\">Shivalika Singh</a>')
    

demo.launch(debug=True)