const INITIAL_STEPS = 16;
const INITIAL_TEMPO = 76;
const INSTRUMENTS_LENGTH = 5;

const createEmptyGrid = (steps) => {
  return Array.from({ length: INSTRUMENTS_LENGTH }, () => Array(steps).fill(false));
};

const createEmptyBassLine = (steps) => {
    return Array.from({ length: steps }, () => []);
}

const defaultState = {
  grid: createEmptyGrid(INITIAL_STEPS),
  bassLine: createEmptyBassLine(INITIAL_STEPS),
  tempo: INITIAL_TEMPO,
  steps: INITIAL_STEPS,
  mutes: Array(INSTRUMENTS_LENGTH).fill(false),
  drumVolume: 1,
  bassVolume: 0.4,
  isPlaying: false
};

module.exports = { defaultState };