import Pitchfinder from "pitchfinder";
import { IPA_MAPPING } from "./constants";

export const extractFrequencies = (props: {
  peaks: Float32Array;
  sampleRate: number;
}): number[] => {
  const { peaks, sampleRate } = props;

  const detectPitch = Pitchfinder.AMDF({
    sampleRate,
    sensitivity: 0.05,
  });
  const duration = peaks.length / sampleRate;
  const bpm = peaks.length / duration / 60;

  const frequencies = Pitchfinder.frequencies(detectPitch, peaks, {
    tempo: bpm,
    quantization: bpm,
  });

  return frequencies;
};

export function milisecondsToTimestamp(ms: number) {
  const hours = Math.floor(ms / 3600000).toString();
  const minutes = Math.floor((ms % 3600000) / 60000).toString();
  const seconds = Math.floor(((ms % 360000) % 60000) / 1000).toString();
  const milliseconds = Math.floor(((ms % 360000) % 60000) % 1000).toString();
  return `${hours.padStart(2, "0")}:${minutes.padStart(
    2,
    "0"
  )}:${seconds.padStart(2, "0")},${milliseconds}`;
}

export const convertIpaToNormal = (ipa: string) => {
  const mark = ipa.match(/(\ˈ|ˌ)/);
  const cleanIpa = ipa.replace(mark ? mark[0] : "", "");

  const converted = IPA_MAPPING[cleanIpa] || cleanIpa;
  if (mark) {
    return `${mark[0]}${converted}`;
  } else {
    return converted;
  }
};