const jab2hex = jab => d3.jab(...jab).formatHex();
const rgb2hex = rgb => d3.rgb(...rgb).formatHex();
const jab2hue = ([, a, b]) => rad2deg * Math.atan2(b, a);
const rgb2hue = rgb => d3.hsl(d3.rgb(...rgb)).h || 0;
const hex2rgb = hex => {
  const { r, g, b } = d3.color(hex);
  return [r, g, b];
};

const buildVectorData = (vector, toHue, toHex) => {
  const sqMag = vectorDot(vector, vector);
  const mag = Math.sqrt(sqMag);
  const unit = vector.map(c => c / mag);
  const hue = toHue(vector);
  const hex = toHex(vector);
  return { vector, sqMag, mag, unit, hue, hex };
};

const buildClusterData = (size, inertia, mu1, mu2, mu3, nu1, nu2, nu3, toHue, toHex) => ({
  size, inertia,
  mu: buildVectorData([mu1, mu2, mu3], toHue, toHex),
  nu: [nu1, nu2, nu3],
});

const buildPokemonData = ([name, size, ...values]) => ({
  name,
  jab: {
    total: buildClusterData(size, ...values.slice(0, 7), jab2hue, jab2hex),
    clusters: [
      buildClusterData(...values.slice(7, 15), jab2hue, jab2hex),
      buildClusterData(...values.slice(15, 23), jab2hue, jab2hex),
      buildClusterData(...values.slice(23, 31), jab2hue, jab2hex),
    ],
  },
  rgb: {
    total: buildClusterData(size, ...values.slice(31, 38), rgb2hue, rgb2hex),
    clusters: [
      buildClusterData(...values.slice(38, 46), rgb2hue, rgb2hex),
      buildClusterData(...values.slice(46, 54), rgb2hue, rgb2hex),
      buildClusterData(...values.slice(54, 62), rgb2hue, rgb2hex),
    ],
  },
});

const pokemonData = databaseV2.map(row => buildPokemonData(row));