-- Requires: sudo apt-get install youtube-dl
-- See https://github.com/rg3/youtube-dl/blob/master/README.md#options
function run(msg, matches)
  local URL = matches[1]
  local receiver = get_receiver(msg)
  
  if string.match(msg.text, '"') then
	return 'Vergiss es'
  end
  
  if string.match(msg.text, "/mp4") then
    text = run_bash('youtube-dl -o "tmp/%(title)s.%(ext)s" '..URL)
	video = string.match(text, 'Merging formats into "tmp/(.*).mp4"')
	if not video then
	file = string.match(text, '%[download%] (.*) has already been downloaded')
	else
	file = 'tmp/'..video..'.mp4'
	end
	send_video(get_receiver(msg), file, ok_cb, false)
  end
  
  if string.match(msg.text, "/mp3") then
    text = run_bash('youtube-dl -o "tmp/%(title)s.%(ext)s" --extract-audio --audio-format mp3 '..URL)
    audio = string.match(text, '%[ffmpeg%] Destination: tmp/(.*).mp3')
    file = 'tmp/'..audio..'.mp3'
	send_audio(get_receiver(msg), file, ok_cb, false)
  end

    print('Sende: '..file)
	message = '"'..file..'" wurde gedownloadet und wird jetzt gesendet! \nDas kann je nach Video sehr lang dauern! \nAlso habt Geduld!'
	message = string.gsub(message, "tmp/", "")
	message = string.gsub(message, ".mp3", "")
	message = string.gsub(message, ".mp4", "")
	message = string.gsub(message, ".mkv", "")
	message = string.gsub(message, ".flv", "")
    return message

end

return {
    description = "Downloadet und sendet ein Video von verschiedenen Seiten mit youtube-dl", 
    usage = {"/mp4 [Link] (Um Video zu laden)","/mp3 [Link] (Um Audio zu laden)","Unterstützte Seiten: PonyWave.de/a/youtubedl"},
    patterns = {"^/mp4 (https?://[%w-_%.%?%.:/%+=&]+)$","^/mp3 (https?://[%w-_%.%?%.:/%+=&]+)$"}, 
    run = run
}
--by Akamaru [https://ponywave.de]