xiao/commands/games-mp/quiz-duel.js

const Command = require('../../framework/Command');
const request = require('node-superfetch');
const { stripIndents } = require('common-tags');
const { Collection } = require('@discordjs/collection');
const { delay, awaitPlayers, shuffle, reactIfAble } = require('../../util/Util');
const { SUCCESS_EMOJI_ID } = process.env;
const choices = ['A', 'B', 'C', 'D'];

module.exports = class QuizDuelCommand extends Command {
	constructor(client) {
		super(client, {
			name: 'quiz-duel',
			aliases: ['trivia-duel'],
			group: 'games-mp',
			description: 'Answer a series of quiz questions against other opponents.',
			game: true,
			credit: [
				{
					name: 'Open Trivia DB',
					url: 'https://opentdb.com/',
					reason: 'API',
					reasonURL: 'https://opentdb.com/api_config.php'
				}
			],
			args: [
				{
					key: 'players',
					type: 'integer',
					min: 1,
					max: 100
				}
			]
		});
	}

	async run(msg, { players }) {
		const awaitedPlayers = await awaitPlayers(msg, players, 1, this.client.blacklist.user);
		let turn = 0;
		const pts = new Collection();
		for (const player of awaitedPlayers) {
			pts.set(player, {
				points: 0,
				id: player,
				user: await this.client.users.fetch(player)
			});
		}
		const questions = await this.fetchQuestions();
		let lastTurnTimeout = false;
		while (questions.length) {
			++turn;
			const question = questions[0];
			questions.shift();
			await msg.say(stripIndents`
				**${turn}. ${question.category}**
				${question.question}
				${question.answers.map((answer, i) => `**${choices[i]}.** ${answer}`).join('\n')}
			`);
			const filter = res => {
				if (!awaitedPlayers.includes(res.author.id)) return false;
				const answer = res.content.toUpperCase();
				if (choices.includes(answer)) {
					reactIfAble(res, res.author, SUCCESS_EMOJI_ID, '✅');
					return true;
				}
				return false;
			};
			const msgs = await msg.channel.awaitMessages({
				filter,
				max: pts.size,
				time: 30000
			});
			if (!msgs.size) {
				await msg.say(`No answers? Well, it was **${question.correct}**.`);
				if (lastTurnTimeout) {
					break;
				} else {
					lastTurnTimeout = true;
					continue;
				}
			}
			const answers = msgs.map(res => {
				const choice = choices.indexOf(res.content.toUpperCase());
				return {
					answer: question.answers[choice],
					id: res.author.id
				};
			});
			const correct = answers.filter(answer => answer.answer === question.correct);
			for (const answer of correct) {
				const player = pts.get(answer.id);
				if (correct[0].id === answer.id) player.points += 75;
				else player.points += 50;
			}
			await msg.say(stripIndents`
				It was... **${question.correct}**!

				_Fastest Guess: ${correct.length ? `${pts.get(correct[0].id).user.tag} (+75 pts)` : 'No One...'}_

				${questions.length ? '_Next round starting in 5 seconds..._' : ''}
			`);
			if (lastTurnTimeout) lastTurnTimeout = false;
			if (questions.length) await delay(5000);
		}
		const winner = pts.sort((a, b) => b.points - a.points).first().user;
		return msg.say(stripIndents`
			Congrats, ${winner}!

			__**Top 10:**__
			${this.makeLeaderboard(pts).slice(0, 10).join('\n')}
		`);
	}

	async fetchQuestions() {
		const { body } = await request
			.get('https://opentdb.com/api.php')
			.query({
				amount: 7,
				type: 'multiple',
				encode: 'url3986'
			});
		if (!body.results) return this.fetchQuestions();
		const questions = body.results;
		return questions.map(question => {
			const answers = question.incorrect_answers.map(answer => decodeURIComponent(answer.toLowerCase()));
			const correct = decodeURIComponent(question.correct_answer.toLowerCase());
			answers.push(correct);
			return {
				question: decodeURIComponent(question.question),
				category: decodeURIComponent(question.category),
				answers: shuffle(answers),
				correct
			};
		});
	}

	makeLeaderboard(pts) {
		let i = 0;
		let previousPts = null;
		let positionsMoved = 1;
		return pts
			.sort((a, b) => b.points - a.points)
			.map(player => {
				if (previousPts === player.points) {
					positionsMoved++;
				} else {
					i += positionsMoved;
					positionsMoved = 1;
				}
				previousPts = player.points;
				return `**${i}.** ${player.user.tag} (${player.points} Point${player.points === 1 ? '' : 's'})`;
			});
	}
};