const Command = require('../../structures/Command');
const { MessageEmbed } = require('discord.js');
const { stripIndents } = require('common-tags');
const { arrayEquals, reactIfAble } = require('../../util/Util');
const { MEGA_EVOLVE_EMOJI_NAME, MEGA_EVOLVE_EMOJI_ID } = process.env;
const genGames = [null, 'rb', 'gs', 'rs', 'dp', 'bw', 'xy', 'sm', 'ss'];
const games = {
	rb: 'Red/Blue',
	gs: 'Gold/Silver',
	rs: 'Ruby/Sapphire',
	dp: 'Diamond/Pearl',
	bw: 'Black/White',
	xy: 'X/Y',
	sm: 'Sun/Moon',
	ss: 'Sword/Shield'
};

module.exports = class PokedexCommand extends Command {
	constructor(client) {
		super(client, {
			name: 'pokedex',
			aliases: ['pokemon', 'pokémon', 'pokédex', 'pkmn'],
			group: 'pokedex',
			memberName: 'pokedex',
			description: 'Searches the Pokédex for a Pokémon.',
			clientPermissions: ['EMBED_LINKS'],
			credit: [
				{
					name: 'Pokémon',
					url: 'https://www.pokemon.com/us/',
					reason: 'Images, Original Game'
				},
				{
					name: 'PokéAPI',
					url: 'https://pokeapi.co/',
					reason: 'API'
				},
				{
					name: 'Serebii.net',
					url: 'https://www.serebii.net/index2.shtml',
					reason: 'Images'
				},
				{
					name: 'The Sounds Resource',
					url: 'https://www.sounds-resource.com/',
					reason: 'Cry Sound Effects (Gen 1-7)',
					reasonURL: 'https://www.sounds-resource.com/3ds/pokemonultrasunultramoon/'
				},
				{
					name: 'The Sounds Resource',
					url: 'https://www.sounds-resource.com/',
					reason: 'Cry Sound Effects (Gen 8)',
					reasonURL: 'https://www.sounds-resource.com/nintendo_switch/pokemonswordshield/'
				},
				{
					name: 'Pokémon Showdown',
					url: 'https://play.pokemonshowdown.com/',
					reason: 'Cry Sound Effects (Meltan and Melmetal)',
					reasonURL: 'https://play.pokemonshowdown.com/audio/cries/'
				}
			],
			args: [
				{
					key: 'pokemon',
					prompt: 'What Pokémon would you like to get information on?',
					type: 'string'
				}
			]
		});
	}

	async run(msg, { pokemon }) {
		try {
			const data = await this.client.pokemon.fetch(pokemon);
			if (!data) return msg.say('Could not find any results.');
			if (!data.gameDataCached) await data.fetchGameData();
			const defaultVariety = data.varieties.find(variety => variety.default);
			const typesShown = data.varieties.filter(variety => {
				if (variety.default) return true;
				return !arrayEquals(defaultVariety.types, variety.types);
			});
			const feet = Math.floor(data.height / 12);
			const evoChain = data.chain.data.map(pkmn => {
				if (Array.isArray(pkmn)) {
					return pkmn.map(pkmn2 => {
						const found = this.client.pokemon.get(pkmn2);
						if (found.id === data.id) return `**${found.name}**`;
						return found.name;
					}).join('/');
				}
				const found = this.client.pokemon.get(pkmn);
				if (found.id === data.id) return `**${found.name}**`;
				return found.name;
			}).join(' -> ');
			const embed = new MessageEmbed()
				.setColor(0xED1C24)
				.setAuthor(`#${data.displayID} - ${data.name}`, data.boxImageURL, data.serebiiURL)
				.setDescription(stripIndents`
					**${data.genus}**
					${data.entries[Math.floor(Math.random() * data.entries.length)]}
				`)
				.setThumbnail(data.spriteImageURL)
				.addField('❯ Introduced In', games[genGames[data.generation]], true)
				.addField('❯ Height', `${feet}'${Math.floor(data.height) - (feet * 12)}"`, true)
				.addField('❯ Weight', `${data.weight} lbs.`, true)
				.addField('❯ Types', typesShown.map(variety => {
					const showParens = variety.name && typesShown.length > 1;
					return `${variety.types.join('/')}${showParens ? ` (${variety.name})` : ''}`;
				}).join('\n'))
				.addField('❯ Evolution Chain', `${evoChain}${data.mega ? ` -> ${this.megaEvolveEmoji}` : ''}`)
				.addField('❯ Held Items',
					data.heldItems.length ? data.heldItems.map(item => `${item.name} (${item.rarity}%)`).join('\n') : 'None')
				.addField('❯ Gender Rate',
					data.genderRate.genderless ? 'Genderless' : `♂️ ${data.genderRate.male}% ♀️ ${data.genderRate.female}%`);
			if (data.cry) {
				const connection = msg.guild ? this.client.voice.connections.get(msg.guild.id) : null;
				const moveUsage = this.client.registry.commands.get('pokedex-moveset').usage();
				const statsUsage = this.client.registry.commands.get('pokedex-stats').usage();
				const locationUsage = this.client.registry.commands.get('pokedex-location').usage();
				if (connection) {
					embed.setFooter(stripIndents`
						Use ${statsUsage} to get their stats.
						Use ${moveUsage} to get their moveset.
						Use ${locationUsage} to get their locations.
					`);
					connection.play(data.cry);
					await reactIfAble(msg, this.client.user, '🔉');
				} else {
					const usage = this.client.registry.commands.get('join').usage();
					embed.setFooter(stripIndents`
						Use ${statsUsage} to get their stats.
						Use ${moveUsage} to get their moveset.
						Use ${locationUsage} to get their locations.
						Join a voice channel and use ${usage} to hear their cry.
					`);
				}
			}
			return msg.embed(embed);
		} catch (err) {
			return msg.reply(`Oh no, an error occurred: \`${err.message}\`. Try again later!`);
		}
	}

	get megaEvolveEmoji() {
		return MEGA_EVOLVE_EMOJI_ID && MEGA_EVOLVE_EMOJI_NAME
			? `<:${MEGA_EVOLVE_EMOJI_NAME}:${MEGA_EVOLVE_EMOJI_ID}>`
			: '';
	}
};