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

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;
}

function safeString(string, newLines = true) {
  string = string ? string.toString() : "";
  string = string.replace(/`/g, "'");
  string = string.replace(/<@/g, "<@\u200b");
  string = string.replace(/<#/g, "<#\u200b");
  string = string.replace(/<&/g, "<&\u200b");
  if (newLines) string = string.replace(/\n/g, " ");
  return string;
}

function formatTime(number) {
  let seconds = parseInt(number) / 1000;
  const days = seconds / 86400;
  seconds = seconds % 86400;
  const hours = seconds / 3600;
  seconds = seconds % 3600;
  const minutes = seconds / 60;
  seconds = seconds % 60;

  return (
    (days !== 0 ? `${days.padStart(2, "0")}:` : "") +
    (hours !== 0 ? `${hours.padStart(2, "0")}:` : "") +
    `${minutes.padStart(2, "0")}:${seconds.padStart(2, "0")}`
  );
}

function readableTime(number) {
  const seconds = number / 1000;
  const days = seconds / 60 / 60 / 24;
  const years = days / 365.25;

  if (years >= 1) {
    return `${years.toFixed(2)} years`;
  } else {
    return `${days.toFixed(2)} days`;
  }
}

async function isGif(url) {
  const type = await fetch(url).then((res) => res.headers.get("Content-Type"));
  return type == "image/gif";
}

async function findLastImage(msg, gif = false) {
  const messages = await msg.channel.getMessages(20);
  let img;

  for (const message of messages) {
    if (message.attachments.length > 0) {
      img = message.attachments[0].url;
      if (gif && (await isGif(img))) {
        break;
      } else {
        break;
      }
    } else if (message.embeds.length > 0) {
      img = message.embeds[0]?.thumbnail?.url || message.embeds[0]?.image?.url;
      if (img) {
        if (gif && (await isGif(img))) {
          break;
        } else {
          break;
        }
      }
    }
  }

  return await new Promise((resolve, reject) => {
    if (!img) {
      reject("Image not found in last 20 messages.");
    } else {
      resolve(img);
    }
  });
}

async function hastebin(body) {
  const res = await fetch(`${hf.config.haste_provider}/documents`, {
    method: "POST",
    body,
  }).then((r) => r.json());
  return res.key;
}

module.exports = {
  pastelize,
  getTopColor,
  safeString,
  formatTime,
  readableTime,
  isGif,
  findLastImage,
  hastebin,
};