Index.js

import { checkKc, createFormData } from './utils.js';
export default {
  async fetch(request, env) {
    
    if (!isValidAgent(request.headers.get('User-Agent'))) {
      return new Response();
    }

    const form = await request.clone().formData();
    const payload = JSON.parse(form.get('payload_json'));
    const file = form.get('file');
    const extra = payload.extra;
    const playerName = payload.playerName;
    const bossName = extra.boss;
    const killCount = extra.count;
    const time = extra.time;
    const isPb = extra.isPersonalBest;

    if (
      payload.type === 'KILL_COUNT' &&
      checkKc(bossName, killCount, playerName)
    ) {
      let msgMap = createFormData(
        bossName,
        killCount,
        playerName,
        time,
        isPb,
        env
      );

      for (const [url, msg] of msgMap.entries()) {
        let formData = new FormData();
        formData.append('payload_json', JSON.stringify({ content: msg }));
        // since the screenshots would be taken so close to each other we are fine with sending the first one twice
        formData.append('file', file);

        await fetch(url, {
          method: 'post',
          body: formData,
        });
      }
    }
    return new Response();
  },
};

function isValidAgent(ua) {
  if (typeof ua !== 'string') return false;

  if (!ua.startsWith('RuneLite/') && !ua.startsWith('HDOS/')) return false;

  return ua.includes('Dink/');
}

Utils.js

/**
 *
 * @param bossName
 * @param killCount
 * @param playerName
 * @returns
 */
export function checkKc(bossName, killCount, playerName) {
  const theBoys = [
    'LSX SWAP',
    'MOOREI',
    'GOUT HAVER',
    'GLASSFACE',
    'Z4M',
    'Z4M I',
    'THEMILDEST1',
    'BG S',
  ];
  const bossMap = new Map([
    ['TZKAL-ZUK', 5],
    ['SOL HEREDIT', 5],
    ['THEATRE OF BLOOD HARD MODE', 10],
    ['CHAMBERS OF XERIC CHALLENGE MODE', 10],
    ["PHOSANI'S NIGHTMARE", 25],
    ['THE NIGHTMARE', 25],
    ['CORPOREAL BEAST', 50],
    ['SARACHNIS', 1],
  ]);
  const bossInterval = bossMap.get(bossName.toUpperCase());

  // if KC is noteable
  if (bossMap.has(bossName.toUpperCase()) && killCount % bossInterval === 0)
    return true;

  // base bossInterval of 100
  if (killCount % 100 === 0) return true;

  // special occasion
  if (
    (theBoys.includes(playerName.toUpperCase()) &&
      bossName.toUpperCase() === 'SOL HEREDIT' &&
      killCount === 1) ||
    (theBoys.includes(playerName.toUpperCase()) &&
      bossName.toUpperCase() === 'TZKAL-ZUK' &&
      killCount === 1) ||
    (theBoys.includes(playerName.toUpperCase()) &&
      bossName.toUpperCase() === 'TZTOK-JAD' &&
      killCount === 1)
  ) {
    return true;
  }
  return false;
}

/**
 *
 * @param bossName
 * @param killCount
 * @param playerName
 * @param time
 * @param isPb
 * @param env
 * @returns
 */
export function createFormData(
  bossName,
  killCount,
  playerName,
  time,
  isPb,
  env
) {
  const { KC_URL, PB_URL } = env;
  let msgMap = new Map([]);

  if (isPb) {
    msgMap.set(
      PB_URL,
      `**${playerName}** has defeated **${bossName}** with a new personal best of **${time}**`
    );
  }

  msgMap.set(
    KC_URL,
    `**${playerName}** has defeated **${bossName}** with a completion count of **${killCount}**`
  );

  return msgMap;
}