const Command = require('../../structures/Command');
const { MessageEmbed } = require('discord.js');
const request = require('node-superfetch');
const { stripIndents } = require('common-tags');
const { shorten } = require('../../util/Util');
const searchGraphQL = stripIndents`
	query ($search: String, $type: MediaType, $isAdult: Boolean) {
		anime: Page (perPage: 1) {
			results: media (type: $type, isAdult: $isAdult, search: $search) { id }
		}
	}
`;
const resultGraphQL = stripIndents`
	query media($id: Int, $type: MediaType) {
		Media(id: $id, type: $type) {
			id
			title { userPreferred }
			coverImage { large }
			startDate { year }
			description
			season
			type
			status
			episodes
			isAdult
			meanScore
		}
	}
`;

module.exports = class AnimeCommand extends Command {
	constructor(client) {
		super(client, {
			name: 'anime',
			aliases: ['anilist-anime', 'anilist'],
			group: 'search',
			memberName: 'anime',
			description: 'Searches AniList for your query, getting anime results.',
			clientPermissions: ['EMBED_LINKS'],
			args: [
				{
					key: 'query',
					prompt: 'What anime would you like to search for?',
					type: 'string'
				}
			]
		});
	}

	async run(msg, { query }) {
		try {
			const id = await this.search(query, msg.channel.nsfw);
			if (!id) return msg.say('Could not find any results.');
			const anime = await this.fetchAnime(id);
			const embed = new MessageEmbed()
				.setColor(0x02A9FF)
				.setAuthor('AniList', 'https://i.imgur.com/iUIRC7v.png', 'https://anilist.co/')
				.setURL(`https://anilist.co/anime/${anime.id}`)
				.setThumbnail(anime.coverImage.large || null)
				.setTitle(anime.title.english || anime.title.userPreferred)
				.setDescription(anime.description ? shorten(anime.description.replace(/(<br>)+/g, '\n')) : 'No description.')
				.addField('❯ Status', anime.status, true)
				.addField('❯ Episodes', anime.episodes, true)
				.addField('❯ Season', `${anime.season} ${anime.startDate.year}`, true)
				.addField('❯ Average Score', `${anime.meanScore}/100`, true);
			return msg.embed(embed);
		} catch (err) {
			return msg.reply(`Oh no, an error occurred: \`${err.message}\`. Try again later!`);
		}
	}

	async search(query, nsfw) {
		const { body } = await request
			.post('https://graphql.anilist.co/')
			.send({
				variables: {
					search: query,
					type: 'ANIME',
					isAdult: Boolean(nsfw)
				},
				query: searchGraphQL
			});
		if (!body.data.anime.results.length) return null;
		return body.data.anime.results[0].id;
	}

	async fetchAnime(id) {
		const { body } = await request
			.post('https://graphql.anilist.co/')
			.send({
				variables: {
					id,
					type: 'ANIME'
				},
				query: resultGraphQL
			});
		return body.data.Media;
	}
};