from tuneavideo.pipelines.pipeline_tuneavideo import TuneAVideoPipeline
from tuneavideo.models.unet import UNet3DConditionModel
from tuneavideo.util import save_videos_grid
import torch
import gradio as gr
from bs4 import BeautifulSoup
import requests


def model_url_list():
    url_list = []
    for i in range(0, 5):
        url_list.append(f"https://huggingface.co/models?p={i}&sort=downloads&search=dreambooth")
    return url_list

def data_scraping(url_list):
    model_list = []
    for url in url_list:
        response = requests.get(url)
        soup = BeautifulSoup(response.text, "html.parser")
        div_class = 'grid grid-cols-1 gap-5 2xl:grid-cols-2'
        div = soup.find('div', {'class': div_class})
        for a in div.find_all('a', href=True):
            model_list.append(a['href'])
    return model_list

model_list = data_scraping(model_url_list())
for i in range(len(model_list)):
    model_list[i] = model_list[i][1:]

best_model_list = [
    "runwayml/stable-diffusion-v1-5",
    "CompVis/stable-diffusion-v1-4",
    "prompthero/openjourney",
    "dreamlike-art/dreamlike-photoreal-2.0",
    "dreamlike-art/dreamlike-diffusion-1.0"
]

model_list = best_model_list + model_list

def tune_video_predict(
    pipe_id: str,
    prompt: str,
    video_length: int,
    height: int,
    width: int,
    num_inference_steps: int,
    guidance_scale: float,
):
    unet = UNet3DConditionModel.from_pretrained("Tune-A-Video-library/a-man-is-surfing", subfolder='unet', torch_dtype=torch.float16).to('cuda')
    pipe = TuneAVideoPipeline.from_pretrained(pipe_id, unet=unet, torch_dtype=torch.float16).to("cuda")
    video = pipe(prompt, video_length=video_length, height=height, width=width, num_inference_steps=num_inference_steps, guidance_scale=guidance_scale).videos
    output_path = save_videos_grid(video, save_path='output', path=f"{prompt}.gif")
    return output_path
    


demo_inputs = [
    gr.Dropdown(
        label="Model",
        choices=model_list,
        value="CompVis/stable-diffusion-v1-4",
    ),
    gr.inputs.Textbox(
        label="Prompt",
        default='a flower blooming'

    ),
    gr.inputs.Slider(
        label="Video Length",
        minimum=1,
        maximum=50,
        default=8,
        step=1,
    ),
    gr.inputs.Slider(
        label="Height",
        minimum=128,
        maximum=1280,
        default=416,
        step=32,

    ),  
    gr.inputs.Slider(
        label="Width",
        minimum=128,
        maximum=1280,
        default=416,
        step=32,
    ),
    gr.inputs.Slider(
        label="Num Inference Steps",
        minimum=1,
        maximum=100,
        default=50,
        step=1,
    ),
    gr.inputs.Slider(
        label="Guidance Scale",
        minimum=0.0,
        maximum=100,
        default=7.5,
        step=0.5,
    )
]

demo_outputs = gr.outputs.Video(type="gif", label="Output")

examples = [
    ["CompVis/stable-diffusion-v1-4", "a panda is surfing", 5, 416, 416, 50, 7.5],
    ["sd-dreambooth-library/disco-diffusion-style", "ddfusion style on the church", 5, 416, 416, 50, 7.5],
    #["sd-dreambooth-library/nasa-space-v2-768", "nasa style galaxy moving", 5, 416, 416, 50, 7.5],
    ["sd-dreambooth-library/mr-potato-head", "sks mr potato head, wearing a pink hat, is surfing.", 5, 416, 416, 50, 7.5],
    ["sd-dreambooth-library/mr-potato-head", "sks mr potato head is surfing in the forest.", 5, 416, 416, 50, 7.5],
]
    
description = "This is an application that generates video based on a text prompt. To get started, simply input text. The default model in the dropdown is a generic model that you can generate anything. Alternatively, for more photorealistic generations, you can use other models in the dropdown. These models are Dreambooth models, and they're trained with a specific object name, so make sure you know what the object is called. You can find an example prompt for a dreambooth model in Examples section right below the interface."
title = "Tune-A-Video: One-Shot Tuning of Image Diffusion Models for Text-to-Video Generation"

demo_app = gr.Interface(
    fn=tune_video_predict,
    inputs=demo_inputs,
    outputs=demo_outputs,
    examples=examples,
    cache_examples=True,
    title=title,
    theme="huggingface",
    description=description
)

demo_app.launch(debug=True, enable_queue=True)