Get info about the currently playing iTunes track

playing

#!/usr/bin/env bash

read -r -d '' JS <<JS
function run () {
  var iTunes = Application("iTunes")
  if (!iTunes.running()) { return JSON.stringify({ state: "closed" }) }
  
  var state = iTunes.playerState()
  if ('stopped' === state) { return JSON.stringify({ state: state }) }
  
  var current = iTunes.currentTrack()
  var position = iTunes.playerPosition()
  return JSON.stringify({
    state: state,
    artist: current.artist(),
    name: current.name(),
    album: current.album(),
    duration: current.duration(),
    position: position,
    remaining: current.duration() - position
  })
}
JS

osascript -l JavaScript -e "$JS"