const internals = {
  kSplitterRegex: /.{1,8}/g,
  kGlyphs: [
    "☽",
    "☆",
    "♢",
    "♡",
    "╱",
    "╲",
    "╳",
    "〰",
    "▷",
    "⏊",
    "〒",
    "▢",
    "◯",
    "⏃",
    "⏀",
    "⏆"
  ]
};

// Return a glyph with color based on a 4 byte fragment of a UUIDv4
const getGlyphHashFragment = function (uuidFragment) {

  const glyphIndex = parseInt(uuidFragment.substring(0,2), 16) % 16;
  return {
    glyph: internals.kGlyphs[glyphIndex],
    color: `#${uuidFragment.substring(2,8)}`
  }
};

// Return an array of glyphs based on a UUIDv4
export const getGlyphHash = function (uuid) {

  const hashFragments = uuid.match(internals.kSplitterRegex);
  return hashFragments.map(getGlyphHashFragment);
};