from __future__ import annotations
import os
os.system("pip install -e git+https://github.com/CompVis/taming-transformers.git@master#egg=taming-transformers")
os.system("pip install -e git+https://github.com/alvanli/RDM-Region-Aware-Diffusion-Model.git@main#egg=guided_diffusion")
os.environ["HF_HUB_ENABLE_HF_TRANSFER"] = "False"

import math
import random

import gradio as gr
import torch
from PIL import Image, ImageOps
from run_edit import run_model
from cool_models import make_models

help_text = """"""


def main():
    segmodel, model, diffusion, ldm, bert, clip_model, model_params = make_models()

    def load_sample():
        SAMPLE_IMAGE = "./flower1.jpg"
        input_image = Image.open(SAMPLE_IMAGE)
        from_text = "a flower"
        instruction = "a sunflower"
        negative_prompt = ""
        seed = 42
        guidance_scale = 5.0
        clip_guidance_scale = 150
        cutn = 16
        l2_sim_lambda = 10_000

        edited_image_1 = run_model(
            segmodel, model, diffusion, ldm, bert, clip_model, model_params,
            from_text, instruction, negative_prompt, input_image.convert('RGB'), seed, guidance_scale, clip_guidance_scale, cutn, l2_sim_lambda
        )
        
        return [
            input_image, from_text, instruction, negative_prompt, seed, guidance_scale, 
            clip_guidance_scale, cutn, l2_sim_lambda, edited_image_1
        ]


    def generate(
        input_image: Image.Image,
        from_text: str,
        instruction: str,
        negative_prompt: str,
        randomize_seed: bool,
        seed: int,
        guidance_scale: float,
        clip_guidance_scale: float,
        cutn: int,
        l2_sim_lambda: float
    ):
        seed = random.randint(0, 100000) if randomize_seed else seed

        if instruction == "":
            return [seed, input_image]

        generator = torch.manual_seed(seed)

        edited_image_1 = run_model(
            segmodel, model, diffusion, ldm, bert, clip_model, model_params,
            from_text, instruction, negative_prompt, input_image.convert('RGB'), seed, guidance_scale, clip_guidance_scale, cutn, l2_sim_lambda
        )

        return [seed, edited_image_1]

    def reset():
        return [
            "Randomize Seed", 42, None, 5.0,
            150, 16, 10000
        ]

    with gr.Blocks() as demo:
        gr.Markdown("""
        #### RDM: Region-Aware Diffusion for Zero-shot Text-driven Image Editing
        Original Github Repo: https://github.com/haha-lisa/RDM-Region-Aware-Diffusion-Model  <br/>
        Instructions: <br/>
        - In the "From Text" field, specify the object you are trying to modify,
        - In the "edit instruction" field, specify what you want that area to be turned into
        """)
        with gr.Row():
            with gr.Column(scale=1, min_width=100):
                generate_button = gr.Button("Generate")
            with gr.Column(scale=1, min_width=100):
                load_button = gr.Button("Load Example")
            with gr.Column(scale=1, min_width=100):
                reset_button = gr.Button("Reset")
            with gr.Column(scale=3):
                from_text = gr.Textbox(lines=1, label="From Text", interactive=True)
                instruction = gr.Textbox(lines=1, label="Edit Instruction", interactive=True)
                negative_prompt = gr.Textbox(lines=1, label="Negative Prompt", interactive=True)

        with gr.Row():
            input_image = gr.Image(label="Input Image", type="pil", interactive=True)
            edited_image_1 = gr.Image(label=f"Edited Image", type="pil", interactive=False)
            # edited_image_2 = gr.Image(label=f"Edited Image", type="pil", interactive=False)
            input_image.style(height=512, width=512)
            edited_image_1.style(height=512, width=512)
            # edited_image_2.style(height=512, width=512)

        with gr.Row():
            # steps = gr.Number(value=50, precision=0, label="Steps", interactive=True)
            seed = gr.Number(value=1371, precision=0, label="Seed", interactive=True)
            guidance_scale = gr.Number(value=5.0, precision=1, label="Guidance Scale", interactive=True)
            clip_guidance_scale = gr.Number(value=150, precision=1, label="Clip Guidance Scale", interactive=True)
            cutn = gr.Number(value=16, precision=1, label="Number of Cuts", interactive=True)
            l2_sim_lambda = gr.Number(value=10000, precision=1, label="L2 similarity to original image")

            randomize_seed = gr.Radio(
                ["Fix Seed", "Randomize Seed"],
                value="Randomize Seed",
                type="index",
                show_label=False,
                interactive=True,
            )
            # use_ddim = gr.Checkbox(label="Use 50-step DDIM?", value=True)
            # use_ddpm = gr.Checkbox(label="Use 50-step DDPM?", value=True)
        
        gr.Markdown(help_text)

        generate_button.click(
            fn=generate,
            inputs=[    
                input_image, from_text, instruction, negative_prompt, randomize_seed, 
                seed, guidance_scale, clip_guidance_scale, cutn, l2_sim_lambda
            ],
            outputs=[seed, edited_image_1],
        )

        load_button.click(
            fn=load_sample,
            inputs=[],
            outputs=[input_image, from_text, instruction, negative_prompt, seed, guidance_scale, clip_guidance_scale, cutn, l2_sim_lambda, edited_image_1],
        )


        reset_button.click(
            fn=reset,
            inputs=[],
            outputs=[
                randomize_seed, seed, edited_image_1, guidance_scale,
                clip_guidance_scale, cutn, l2_sim_lambda
            ],
        )

    demo.queue(concurrency_count=1)
    demo.launch(share=False, server_name="0.0.0.0")


if __name__ == "__main__":
    main()