import type { VibePreset } from '../vibes';
import type { GardenAudioChord, GardenAudioVibeProfile } from './garden-audio-config';

export const PITCH_SEMITONES_PER_OCTAVE = 12;

const chordVoicings = {
  majorOpen: [0, 7, 12, 16],
  minorOpen: [0, 7, 12, 15],
  majorClosed: [0, 4, 7, 12, 16],
  minorClosed: [0, 3, 7, 12, 15],
};

export const getVibeProfile = (vibe: VibePreset): GardenAudioVibeProfile => vibe.audio;

export const getChordIntervals = (
  chord: GardenAudioChord,
  openVoicing: boolean
): Array<number> => {
  if (openVoicing) {
    return chord.quality === 'major' ? chordVoicings.majorOpen : chordVoicings.minorOpen;
  }

  return chord.quality === 'major'
    ? chordVoicings.majorClosed
    : chordVoicings.minorClosed;
};

export const degreeToSemitone = (
  profile: GardenAudioVibeProfile,
  degree: number
): number => {
  const scaleIndex =
    ((degree % profile.scale.length) + profile.scale.length) % profile.scale.length;
  const octave = Math.floor(degree / profile.scale.length);
  return profile.scale[scaleIndex] + octave * PITCH_SEMITONES_PER_OCTAVE;
};