Change desk lamp color if you pickup a weapon with less than 30% ammo in CS2

script.csgo.ts

import type { GameState, Weapons, Weapon, WeaponSlotType } from "npm:csgo-gsi-types";
import Fastify from "npm:fastify";
import {
  useAsyncState,
  useNewLight,
  colors
} from "reactive-home";

declare module 'csgo-gsi-types' {
  export interface Player {
    weapons?: Weapons;
  }
  export interface Weapon {
    ammo_clip?: number;
    ammo_clip_max?: number;
    state: "active" | "holstered"
  }
}

const fastify = Fastify();

const deskLamp = useNewLight(await useAsyncState('light.0xdc8e95fffee16f80'))

let lastEvent: GameState | null = null;
let lastEventTime: null | Date = null;

fastify.post<{ Body: GameState }>("/", (req, reply) => {
  lastEvent = req.body;
  lastEventTime = new Date();
  reply.code(200).send("");

  if (lastEvent.player?.weapons) {
    for (const weaponKey in lastEvent.player.weapons) {
      const weapon = lastEvent.player.weapons[weaponKey as WeaponSlotType];
      if (weapon?.state === 'active' && weapon?.ammo_clip !== undefined && weapon?.ammo_clip_max !== undefined) {
        if ((weapon.ammo_clip / weapon.ammo_clip_max) <= 0.30) {
          deskLamp.rgbColor = colors.yellow;
          return
        }
      }
    }
  }
  deskLamp.rgbColor = [255, 39, 208];
});

fastify.get("/lastEvent", () => {
  return lastEvent
    ? JSON.stringify({ lastEvent, lastEventTime }, null, 4)
    : lastEvent;
});

await fastify.listen({ port: 9999, host: "0.0.0.0" });