const {v3} = require("murmurhash");
const colorcolor = require("colorcolor");

function pastelize(id) {
  const hue = v3(id) % 360;
  const hex = colorcolor(`hsl(${hue},75%,60%)`, "hex");
  return parseInt(hex.substring(1), 16);
}

function getTopColor(msg, id, fallback = 0x7289da) {
  if (!msg.channel.guild) return fallback;

  const roles = msg.channel.guild.members
    .get(id)
    .roles.map((role) => msg.channel.guild.roles.get(role))
    .filter((role) => role.color);
  roles.sort((a, b) => b.position - a.position);

  return roles[0]?.color || fallback;
}

module.exports = {
  pastelize,
  getTopColor,
};