shell script to request Spotify track ID for a song or a whole playlist

spotify.sh

function spotify() {
  count=$[$count+1]

  id=`curl --silent -G --data-urlencode "q=$1" "https://api.spotify.com/v1/search?&type=artist,track" -H "Accept: application/json" | 
    grep "spotify:track:" |
    head -n 1 | 
    cut -c 16-51`

  if [ -z "$id" ] ; then
    >&2 echo -e "\033[0;31m$1\033[0m"
  else 
    >&2 echo -e "\033[0;92m$1\033[0m"
    echo $id
  fi
}

if [ $# -eq 0 ] ; then 
  echo ""
  echo "┌─┐┌─┐┌─┐┌┬┐┬┌─┐┬ ┬";
  echo "└─┐├─┘│ │ │ │├┤ └┬┘";
  echo "└─┘┴  └─┘ ┴ ┴└   ┴ ";
  echo ""
  echo "usage:"
  echo "  spotify songs.txt > output.txt"
  echo "  spotify Artist - Song > output.txt"
  echo ""
  echo ""
  echo "when the script is finished:"
  echo "  1. copy output to clipboard."
  echo "  2. paste in a Spotify playlist"
  echo ""
  exit
fi

count=0

if [ -f "$1" ]
then
  while read line
  do
    spotify "$line"
  done < $1  
else
  spotify "${*:1}"
fi