const Command = require('../../framework/Command');
const { stripIndents } = require('common-tags');
const request = require('node-superfetch');
const { shuffle } = require('../../util/Util');
const difficulties = ['easy', 'medium', 'hard'];
const choices = ['A', 'B', 'C', 'D'];

module.exports = class QuizCommand extends Command {
	constructor(client) {
		super(client, {
			name: 'quiz',
			aliases: ['trivia'],
			group: 'games-sp',
			description: 'Answer a quiz question.',
			details: `**Difficulties:** ${difficulties.join(', ')}`,
			game: true,
			credit: [
				{
					name: 'Open Trivia DB',
					url: 'https://opentdb.com/',
					reason: 'API',
					reasonURL: 'https://opentdb.com/api_config.php'
				}
			],
			args: [
				{
					key: 'difficulty',
					type: 'string',
					default: '',
					oneOf: difficulties,
					parse: difficulty => difficulty.toLowerCase()
				}
			]
		});
	}

	async run(msg, { difficulty }) {
		const { body } = await request
			.get('https://opentdb.com/api.php')
			.query({
				amount: 1,
				type: 'multiple',
				encode: 'url3986',
				difficulty
			});
		if (!body.results) return msg.reply('Oh no, a question could not be fetched. Try again later!');
		const answers = body.results[0].incorrect_answers.map(answer => decodeURIComponent(answer.toLowerCase()));
		const correct = decodeURIComponent(body.results[0].correct_answer.toLowerCase());
		answers.push(correct);
		const shuffled = shuffle(answers);
		await msg.reply(stripIndents`
			**You have 15 seconds. The category is _${decodeURIComponent(body.results[0].category)}_.**
			${decodeURIComponent(body.results[0].question)}
			${shuffled.map((answer, i) => `**${choices[i]}.** ${answer}`).join('\n')}
		`);
		const filter = res => res.author.id === msg.author.id && choices.includes(res.content.toUpperCase());
		const msgs = await msg.channel.awaitMessages({
			filter,
			max: 1,
			time: 15000
		});
		if (!msgs.size) return msg.reply(`Sorry, time is up! It was ${correct}.`);
		const win = shuffled[choices.indexOf(msgs.first().content.toUpperCase())] === correct;
		if (!win) return msg.reply(`Nope, sorry, it's ${correct}.`);
		return msg.reply('Nice job! 10/10! You deserve some cake!');
	}
};