from typing import Optional

import gradio as gr
import numpy as np
import torch
from PIL import Image
import io

import spaces
import base64, os
from utils import check_ocr_box, get_yolo_model, get_caption_model_processor, get_som_labeled_img
import torch
from PIL import Image

# Model source: https://huggingface.co/microsoft/OmniParser
# gr.load("models/microsoft/OmniParser").launch()
yolo_model = get_yolo_model(model_path='weights/icon_detect/best.pt')
caption_model_processor = get_caption_model_processor(model_name="florence2", model_name_or_path="weights/icon_caption_florence")
platform = 'pc'
if platform == 'pc':
    draw_bbox_config = {
        'text_scale': 0.8,
        'text_thickness': 2,
        'text_padding': 2,
        'thickness': 2,
    }
elif platform == 'web':
    draw_bbox_config = {
        'text_scale': 0.8,
        'text_thickness': 2,
        'text_padding': 3,
        'thickness': 3,
    }
elif platform == 'mobile':
    draw_bbox_config = {
        'text_scale': 0.8,
        'text_thickness': 2,
        'text_padding': 3,
        'thickness': 3,
    }



MARKDOWN = """
# OmniParser for Pure Vision Based General GUI Agent 🔥
<div>
    <a href="https://arxiv.org/pdf/2408.00203">
        <img src="https://img.shields.io/badge/arXiv-2408.00203-b31b1b.svg" alt="Arxiv" style="display:inline-block;">
    </a>
</div>

OmniParser is a screen parsing tool to convert general GUI screen to structured elements. 
"""

DEVICE = torch.device('cuda')

# @spaces.GPU
@torch.inference_mode()
@torch.autocast(device_type="cuda", dtype=torch.bfloat16)
@spaces.GPU
def process(
    image_input,
    box_threshold=0.01,
    iou_threshold=0.01
) -> Optional[Image.Image]:

    image_save_path = 'imgs/saved_image_demo.png'
    image_input.save(image_save_path)
    # import pdb; pdb.set_trace()

    ocr_bbox_rslt, is_goal_filtered = check_ocr_box(image_save_path, display_img = False, output_bb_format='xyxy', goal_filtering=None, easyocr_args={'paragraph': False, 'text_threshold':0.9})
    text, ocr_bbox = ocr_bbox_rslt
    # print('prompt:', prompt)
    dino_labled_img, label_coordinates, parsed_content_list = get_som_labeled_img(image_save_path, yolo_model, BOX_TRESHOLD = box_threshold, output_coord_in_ratio=True, ocr_bbox=ocr_bbox,draw_bbox_config=draw_bbox_config, caption_model_processor=caption_model_processor, ocr_text=text,iou_threshold=iou_threshold)
    image = Image.open(io.BytesIO(base64.b64decode(dino_labled_img)))
    print('finish processing')
    parsed_content_list = '\n'.join(parsed_content_list)
    return image, str(parsed_content_list)

examples = [
    ["./imgs/google_page.png", 0.05, 0.1],
    ["./imgs/logo.png", 0.2, 0.15],
    ["./imgs/windows_home.png", 0.1, 0.05],
    ["./imgs/windows_multitab.png", 0.1, 0.05]
]


with gr.Blocks() as demo:
    gr.Markdown(MARKDOWN)
    with gr.Row():
        with gr.Column():
            image_input_component = gr.Image(
                type='pil', label='Upload image')
            # set the threshold for removing the bounding boxes with low confidence, default is 0.05
            box_threshold_component = gr.Slider(
                label='Box Threshold', minimum=0.01, maximum=1.0, step=0.01, value=0.05)
            # set the threshold for removing the bounding boxes with large overlap, default is 0.1
            iou_threshold_component = gr.Slider(
                label='IOU Threshold', minimum=0.01, maximum=1.0, step=0.01, value=0.1)
            submit_button_component = gr.Button(
                value='Submit', variant='primary')
        with gr.Column():
            image_output_component = gr.Image(type='pil', label='Image Output')
            text_output_component = gr.Textbox(label='Parsed screen elements', placeholder='Text Output')

    gr.Examples(
        examples=examples,
        inputs=[image_input_component],
        outputs=[image_output_component, text_output_component],
        fn=process,  # Function to execute
        cache_examples="lazy"  # Enables lazy caching for examples
    )


    submit_button_component.click(
        fn=process,
        inputs=[
            image_input_component,
            box_threshold_component,
            iou_threshold_component
        ],
        outputs=[image_output_component, text_output_component]
    )

demo.launch(debug=False, show_error=True, share=True)
# demo.launch(share=True, server_port=7861, server_name='0.0.0.0')