import gradio as gr
import os
import allin1

from pathlib import Path

HEADER = """
<header>
  <h1>
    All-In-One Music Structure Analyzer 🔮
  </h1>
  <p>
    <a href="https://github.com/mir-aidj/all-in-one">[Python Package]</a>
    <a href="https://arxiv.org/abs/2307.16425">[Paper]</a>
    <a href="https://taejun.kim/music-dissector/">[Visual Demo]</a>
  </p>
</header>
"""

DESCRIPTION = """

This Space demonstrates [All-In-One Music Structure Analyzer](https://github.com/mir-aidj/all-in-one),
a tool that predicts:
- BPM
- Beats
- Downbeats
- Functional segment boundaries
- Functional segment labels

For more information, please visit the links above ✨🧸
"""

CACHE_EXAMPLES = os.getenv('CACHE_EXAMPLES', '1') == '1'


def analyze(path):
  path = Path(path)
  result = allin1.analyze(
    path,
    multiprocess=False,
    keep_byproducts=True,  # TODO: remove this
  )
  fig = allin1.visualize(result)
  allin1.sonify(result, out_dir='./sonif')
  sonif_path = Path(f'./sonif/{path.stem}.sonif{path.suffix}').resolve().as_posix()

  return result.bpm, fig, sonif_path


with gr.Blocks(css='style.css') as demo:
  gr.HTML(HEADER)
  gr.Markdown(DESCRIPTION)

  input_audio_path = gr.Audio(
    label='Input',
    source='upload',
    type='filepath',
    format='mp3',
    show_download_button=False,
  )
  button = gr.Button('Analyze', variant='primary')
  output_bpm = gr.Textbox(label='BPM')
  output_viz = gr.Plot(label='Visualization')
  output_sonif = gr.Audio(
    label='Sonification',
    type='filepath',
    format='mp3',
    show_download_button=False,
  )
  gr.Examples(
    examples=[
      './assets/NewJeans - Super Shy.mp3',
    ],
    inputs=input_audio_path,
    outputs=[output_bpm, output_viz, output_sonif],
    fn=analyze,
    cache_examples=CACHE_EXAMPLES,
  )
  button.click(
    fn=analyze,
    inputs=input_audio_path,
    outputs=[output_bpm, output_viz, output_sonif],
    api_name='analyze',
  )

if __name__ == '__main__':
  demo.launch()