import gradio as gr

from download import check_download, download, download_generator

import anvil.media
import os
import pathlib
from pathlib import Path
from shutil import rmtree
import dotenv

dotenv.load_dotenv()

anvil.server.connect(os.environ.get('ANVIL_UPLINK_KEY'))
queue_placeholder = None

url_input = gr.Textbox(label="Youtube/Twitter/etc video URL (supports many services)", value='https://twitter.com/starsonxh/status/1552945347194142720', lines=1, elem_id="url_input")
download_status = gr.Textbox(label="Status:", value='', lines=1, elem_id="download_status")
init_video = gr.Video(label="Downloaded video", visible=False)
init_audio = gr.Audio(label="Downloaded audio", visible=False)
output_text = gr.Textbox(label="Output text", lines=5, visible=False, max_lines=10, interactive=True)
sub_video = gr.Video(label="Subbed video", visible=False)


@anvil.server.callable
def cleanup_output_dir():
  #make sure we're in the main directory
  os.chdir(pathlib.Path(__file__).parent.absolute())
  #delete the output directory contents
  for path in Path("output").glob("**/*"):
    if path.is_file():
      path.unlink()
    elif path.is_dir():
      rmtree(path)

@anvil.server.callable
def download_api(url):
  print(f'Request from Anvil with URL {url}')
  final_response = ''
  #TODO: figure out how to push an incoming event to the queue
  #THIS DOESN'T WORK queue_placeholder.push_event('download', url)
  #TODO: handle errors
  for response in download_generator(url):
    final_response = response['message']
    print(final_response)
  return final_response

def predownload(url):
  for response in download_generator(url):
    updates_object = {}
    updates_object[download_status] = response.get('message', '')
    meta = response.get('meta')
    if 'video' in response:
      updates_object[init_video] = gr.update(visible=True, value=response["video"],
                                             label=f"Init Video: {meta['id']}.{meta['ext']}")
      updates_object[init_audio] = gr.update(visible=True, value=response["audio"],
                                             label=f"Extracted audio : {meta['id']}.mp3")
    if 'whisper_result' in response:
      updates_object[output_text] = gr.update(value=response['whisper_result'].get('srt'), visible=True,
                                              label=f"Subtitles translated from {response['whisper_result'].get('language')} (detected language)")
    if 'sub_video' in response:
      updates_object[sub_video] = gr.update(visible=True, value=response["sub_video"],
                                            label=f"Subbed video: {meta['id']}_translated.mp4")

    yield updates_object

def rebake(output_text, sub_video):
  raise NotImplementedError("Rebake not implemented yet")


subtitled_video = False
css = """
#submit{
  position: absolute;
  flex:0 !important;
  width: 120px;
  right: 13px;
  top: 40px;
}
#url_input{
  font-size: 40px !important;
}
#download_status{
  font-size: 40px !important;
  }

#input_row{
  position: relative;
}
.gradio-interface #submit{
  
}
"""
with gr.Blocks(css=css+"") as demo:
  gr.Markdown('# Vid Translator 0.1 - get english subtitles for videos in any language')
  gr.Markdown('### Link to a tweet, youtube or other video and get a translated video with @openAi #whisper, built by [@altryne](https://twitter.com/altryne/)')
  gr.Markdown('### This is used as the backend for [@vidtranslator](https://twitter.com/vidtranslator/)')
  with gr.Row(elem_id="input_row"):
    with gr.Group() as group:
      url_input.render()
      greet_btn = gr.Button("Translate", elem_id='submit', variant='primary')
      pause_for_editing = gr.Checkbox(label="Pause for editing")
      drowpdown = gr.PlayableVideo
  with gr.Row():
    with gr.Column():
      download_status.render()
      init_video.render()
      init_audio.render()
    with gr.Column():
      with gr.Group():
        sub_video.render()
        output_text.render()
        gr.Button("Download srt file")
        rebake = gr.Button("Edit subtitles on video")


  greet_btn.click(fn=predownload, inputs=[url_input], outputs=[download_status, init_video, init_audio, output_text, sub_video], api_name='predownload')
  url_input.submit(fn=predownload, inputs=[url_input], outputs=[download_status, init_video, init_audio, output_text, sub_video])
  rebake.click(fn=rebake, inputs=[output_text, sub_video], outputs=[download_status, output_text, sub_video])

  api_button = gr.Button("API", variant='primary', visible=False).click(fn=cleanup_output_dir, inputs=[], outputs=[], api_name='cleanup_output_dir')

queue_placeholder = demo.queue()

if __name__ == "__main__":
  demo.launch(show_error=True, debug=True)