const Command = require('../../structures/Command');
const { MessageEmbed } = require('discord.js');
const { stripIndents } = require('common-tags');
const snekfetch = require('snekfetch');
const { shuffle, list } = require('../../structures/Util');
const difficulties = ['easy', 'medium', 'hard'];

module.exports = class QuizCommand extends Command {
	constructor(client) {
		super(client, {
			name: 'quiz',
			aliases: ['jeopardy'],
			group: 'games',
			memberName: 'quiz',
			description: 'Answer a quiz question.',
			clientPermissions: ['EMBED_LINKS'],
			args: [
				{
					key: 'type',
					prompt: 'Which type of question would you like to have? `multiple` or `boolean`.',
					type: 'string',
					validate: type => {
						if (['multiple', 'boolean'].includes(type.toLowerCase())) return true;
						return 'Please enter either `multiple` or `boolean`.';
					},
					parse: type => type.toLowerCase()
				},
				{
					key: 'difficulty',
					prompt: `What should the difficulty of the game be? One of: ${difficulties.join(', ')}`,
					type: 'string',
					default: '',
					validate: difficulty => {
						if (difficulties.includes(difficulty.toLowerCase())) return true;
						return `The difficulty must be one of: ${difficulties.join(', ')}`;
					},
					parse: difficulty => difficulty.toLowerCase()
				}
			]
		});
	}

	async run(msg, args) {
		const { type, difficulty } = args;
		const { body } = await snekfetch
			.get('https://opentdb.com/api.php')
			.query({
				amount: 1,
				type,
				encode: 'url3986',
				difficulty
			});
		if (!body.results) return msg.say('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 embed = new MessageEmbed()
			.setTitle('You have 15 seconds to answer this question:')
			.setColor(0x9797FF)
			.setDescription(stripIndents`
				**${decodeURIComponent(body.results[0].category)}**
				${type === 'boolean' ? '**True or False:** ' : ''}${decodeURIComponent(body.results[0].question)}
				${type === 'multiple' ? `**Choices:** ${list(shuffle(answers), 'or')}` : ''}
			`);
		await msg.embed(embed);
		const msgs = await msg.channel.awaitMessages(res => res.author.id === msg.author.id, {
			max: 1,
			time: 15000
		});
		if (!msgs.size) return msg.say(`Time! It was ${correct}, sorry!`);
		if (msgs.first().content.toLowerCase() !== correct) return msg.say(`Nope, sorry, it's ${correct}.`);
		return msg.say('Nice job! 10/10! You deserve some cake!');
	}
};