transport.js

import { store } from './reduxStore'
import { delay } from './utilsMelody'
const { isQuantizedSequence, unquantizeSequence } = core.sequences

// set velocity to something sensible if it's not specified
const defaultVelocity = velocity => n => ({ velocity, ...n })
const gateEndTime = pc => n => ({
  ...n,
  endTime: n.startTime + pc * (n.endTime - n.startTime)
})
const regulariseMelody = ({ velocity }) => melody => ({
  ...melody,
  notes: melody.notes
    .map(defaultVelocity(velocity))
    // .map(gateEndTime(0.95))
})

// const p = ()=>window.player
const p = () => midiPlayer

export const playDrumNow = (pitch = 50) => {
  player.isPlaying() && player.stop()
  player.start({ totalTime: 0, notes: [{ pitch, isDrum: true }] })
}

export const startPlayer = ({
  melody,
  meme,
  tempo = store?.getState()?.tempo || 120,
  velocity = 75
  // regulariseVelocity=true,
}) => {
  if (meme) { melody = store.getState().memes?.[meme]?.src }
  // const uMelody = isQuantizedSequence(melody) ?
  //  unquantizeSequence(melody,tempo) : melody
  // console.log("startPlayer", melody,uMelody)
  stopPlayer()
  return delay(10)().then(() =>
    p().start(
      regulariseMelody({ velocity })(melody),
      isQuantizedSequence(melody) ? tempo : undefined
    ) // returns promise
  )
}

export const stopPlayer = () =>
  p().isPlaying() && p().stop()