/**
 * Kalimba
 * @module lib/kalimba.js;
 */

import Tone from "tone";
import { choice } from "./util";

const player_count = 4;

const samples = [
  { root: 219.5, fn: "samples/380737__cabled-mess__sansula-01-a-raw.wav" },
  { root: 260.9, fn: "samples/380736__cabled-mess__sansula-02-c-raw.wav" },
  { root: 330.2, fn: "samples/380735__cabled-mess__sansula-03-e-raw.wav" },
  // { root: 440.9, fn: "samples/380733__cabled-mess__sansula-06-a-02-raw.wav" },
  //  { root: 507, fn: 'samples/380734__cabled-mess__sansula-07-b-h-raw.wav', },
  //  { root: 535, fn: 'samples/380731__cabled-mess__sansula-08-c-raw.wav', },
  //  { root: 671, fn: 'samples/380732__cabled-mess__sansula-09-e-raw.wav', },
];

function load({ output }) {
  samples.forEach((sample) => {
    sample.players = [];
    sample.index = -1;
    for (let i = 0; i < player_count; i++) {
      let fn = sample.fn;
      if (window.location.href.match(/asdf.us/)) {
        fn = "//asdf.us/kalimba/" + fn.replace("wav", "mp3");
      }
      let player = new Tone.Player({
        url: fn,
        retrigger: true,
        playbackRate: 1,
      });
      player.name = fn;
      const gain = new Tone.Gain(1.6);
      player.connect(gain);
      gain.connect(output);
      sample.players.push(player);
    }
  });
  console.log(
    "+ Voices:",
    samples.reduce((count, sample) => count + sample.players.length, 0),
  );
}

function play(interval, root) {
  const sample = choice(samples);
  sample.index = (sample.index + 1) % sample.players.length;

  const player = sample.players[sample.index];
  player.playbackRate = (interval * root) / sample.root;
  player.start();
}

function pause() {
  // no-op
}

export default { load, play, pause };

// for help tuning the kalimba samples
// function keydown(e) {
//   // console.log(e.keyCode)
//   if (e.metaKey && last) {
//     let step = e.shiftKey ? (e.ctrlKey ? 0.01 : 0.1) : 1;
//     switch (e.keyCode) {
//       case 38: // up
//         e.preventDefault();
//         samples[0].root -= step;
//         play(last);
//         break;
//       case 40: // down
//         e.preventDefault();
//         samples[0].root += step;
//         play(last);
//         break;
//     }
//     console.log(samples[0].root);
//   }
// }
// window.addEventListener("keydown", keydown, true);