import logging
import os

import gradio as gr
import numpy as np
from PIL import Image
from huggingface_hub import hf_hub_url, cached_download

from inference.face_detector import StatRetinaFaceDetector
from inference.model_pipeline import VSNetModelPipeline
from inference.onnx_model import ONNXModel

logging.basicConfig(
    format='%(asctime)s %(levelname)-8s %(message)s',
    level=logging.INFO,
    datefmt='%Y-%m-%d %H:%M:%S')

MODEL_IMG_SIZE = 512
usage_count = 0  # Based on hugging face logs
def load_model():
    REPO_ID = "Podtekatel/Avatar2VSK"
    FILENAME = "avatar2_260_ep_181.onnx"

    global model
    global pipeline

    # Old model
    model_path = cached_download(
        hf_hub_url(REPO_ID, FILENAME), use_auth_token=os.getenv('HF_TOKEN')
    )
    model = ONNXModel(model_path)

    pipeline = VSNetModelPipeline(model, StatRetinaFaceDetector(MODEL_IMG_SIZE), background_resize=1024, no_detected_resize=1024)

    return model
load_model()

def inference(img):
    img = np.array(img)
    out_img = pipeline(img)

    out_img = Image.fromarray(out_img)
    global usage_count
    usage_count += 1
    logging.info(f'Usage count is {usage_count}')
    return out_img


title = "Avatar 2 Style Transfer"
description = "Gradio Demo for Avatar: The Way of Water style transfer. To use it, simply upload your image, or click one of the examples to load them. Press ❤️ if you like this space or mention this repo on Reddit or Twitter!<br>" \
              """<table>
              <tr>
              <th><img src="file/static/input.jpg" alt="Input"/></th>
              <th><img src="file/static/output.jpg" alt="Output" width="610" height="398"/></th>
              </tr>
              </table>
              """
article = "This model was trained on `Avatar: The Way of Water` movie. This model mainly focuses on faces stylization, Pay attention on this when uploads images. <br>" \
          "" \
          "Model pipeline which used in project is improved CartoonGAN.<br>" \
          "This model was trained on RTX 2080 Ti 2 days with batch size 7.<br>" \
          "Model weights 80 MB in ONNX fp32 format, infers 100 ms on GPU and 600 ms on CPU at 512x512 resolution.<br>" \
          "My email contact: 'neuromancer.ai.lover@gmail.com'."

imgs_folder = 'demo'
examples = [[os.path.join(imgs_folder, img_filename)] for img_filename in sorted(os.listdir(imgs_folder))]


demo = gr.Interface(
    fn=inference,
    inputs=[gr.inputs.Image(type="pil")],
    outputs=gr.outputs.Image(type="pil"),
    title=title,
    description=description,
    article=article,
    examples=examples)
demo.queue(concurrency_count=1)
demo.launch()