simply-xp/src/fetch.js

A Simple, Easy and Beginner Friendly XP System

const levels = require("../src/models/level.js");

/**
 * @param {string} userID
 * @param {string} guildID
 */

async function fetch(userID, guildID) {
	if (!userID) throw new Error("[XP] User ID was not provided.");

	if (!guildID) throw new Error("[XP] Guild ID was not provided.");

	let user = await levels.findOne({
		user: userID,
		guild: guildID
	});
	if (!user) {
		user = new levels({
			user: userID,
			guild: guildID,
			xp: 0,
			level: 0
		});

		await user.save();
	}

	const leaderboard = await levels
		.find({
			guild: guildID
		})
		.sort([["xp", "descending"]])
		.exec();

	if (user === null)
		return {
			level: 0,
			xp: 0,
			reqxp: 100,
			rank: leaderboard.findIndex((i) => i.user === userID) + 1,
			shortxp: 0,
			shortreq: 100
		};

	user.position = leaderboard.findIndex((i) => i.user === userID) + 1;

	let targetxp = user.level + 1;

	let target = targetxp * targetxp * 100;

	function shortener(count) {
		const COUNT_ABBRS = ["", "k", "M", "T"];

		const i = 0 === count ? count : Math.floor(Math.log(count) / Math.log(1000));
		let result = parseFloat((count / Math.pow(1000, i)).toFixed(2));
		result += `${COUNT_ABBRS[i]}`;
		return result;
	}

	let shortXP = shortener(user.xp);

	let shortReqXP = shortener(target);

	return {
		level: user.level,
		xp: user.xp,
		reqxp: target,
		rank: user.position,
		shortxp: shortXP,
		shortreq: shortReqXP
	};
}

module.exports = fetch;