import Tone from "tone";

const oscillators = {};

let output;
let lastPlayed;

function load(out) {
  output = out;
}
function play(freq) {
  if (!output) {
    return;
  }
  const osc = (oscillators[freq] = oscillators[freq] || {});
  if (!osc.el) {
    osc.el = new Tone.Oscillator(freq, "sine");
    osc.el.connect(output);
  }
  osc.el.start();
  osc.playing = true;
  lastPlayed = osc;
  return osc;
}

function pause(freq) {
  if (!oscillators[freq]) return;
  const osc = (oscillators[freq] = oscillators[freq] || {});
  if (osc.el) osc.el.stop();
  osc.playing = false;
  return osc;
}

export default { load, play, pause, oscillators };