#!/bin/sh

main() {
  if [ ! $# -eq 0 ]; then
    usage
  else
    until (check_vimeo_availabe $video); do
      video="$(get_random_vimeo_url)"
    done
    echo $video
  fi
}

get_random_vimeo_url() {
  curl -Ss http://randomvimeovideo.com/ \
  | sed -n 's|.*http\(://vimeo\.com/[0-9]*\).*|https\1|p' \
  | uniq
}

check_vimeo_availabe() {
  video_url=$1
  test $(echo $video_url | wc -c) -lt 18 && return 1
  curl -Ss -I "$video_url" | grep -q "HTTP/1\.1 200 OK"
}

usage() {
  echo 'get a random vimeo video via http://randomvimeovideo.com/'
  echo 'example: mpv $(vimeo_random)'
}

main "$@"