const Command = require('../../structures/Command');
const { MessageEmbed } = require('discord.js');
const { stripIndents } = require('common-tags');
const { list } = require('../../util/Util');
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-stats',
			aliases: ['pokemon-stats', 'pokémon-stats', 'pokédex-stats', 'pkmn-stats'],
			group: 'pokedex',
			memberName: 'pokedex-stats',
			description: 'Responds with the stats 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'
				}
			],
			args: [
				{
					key: 'pokemon',
					prompt: 'What Pokémon would you like to get information on?',
					type: 'string'
				},
				{
					key: 'form',
					prompt: 'What form do you want to get information for?',
					type: 'string',
					default: '',
					parse: form => {
						if (form.toLowerCase() === 'normal') return '';
						return form.toLowerCase();
					}
				}
			]
		});
	}

	async run(msg, { pokemon, form }) {
		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 fetchGames = genGames.slice(data.generation, data.missingno ? 2 : genGames.length);
			if (!data.missingno) await data.fetchSmogonTiers(...fetchGames);
			const displayForms = data.varieties.filter(vrity => vrity.statsDiffer);
			const variety = displayForms.find(vrity => {
				if (!form || form === 'normal') return vrity.default;
				if (!vrity.name) return false;
				return vrity.name.toLowerCase() === form;
			});
			if (!variety) {
				const varieties = displayForms.map(vrity => vrity.name || 'Normal');
				return msg.say(`Invalid form. The forms available for this Pokémon are: ${list(varieties, 'and')}`);
			}
			const statTotal = data.baseStatTotal(variety.id);
			const repeat = {
				hp: Math.round((variety.stats.hp / 255) * 10) * 2,
				atk: Math.round((variety.stats.atk / 255) * 10) * 2,
				def: Math.round((variety.stats.def / 255) * 10) * 2,
				sAtk: Math.round((variety.stats.sAtk / 255) * 10) * 2,
				sDef: Math.round((variety.stats.sDef / 255) * 10) * 2,
				spd: Math.round((variety.stats.spd / 255) * 10) * 2,
				total: Math.round((statTotal / 1125) * 10) * 2
			};
			const embed = new MessageEmbed()
				.setColor(0xED1C24)
				.setAuthor(`#${data.displayID} - ${data.name}`, data.formBoxImageURL(variety.id), data.serebiiURL)
				.setThumbnail(data.formSpriteImageURL(variety.id))
				.addField(`❯ Base Stats (${variety.name || 'Base'} Form)`, stripIndents`
					\`HP:          [${'█'.repeat(repeat.hp)}${' '.repeat(20 - repeat.hp)}]\` **${variety.stats.hp}**
					\`Attack:      [${'█'.repeat(repeat.atk)}${' '.repeat(20 - repeat.atk)}]\` **${variety.stats.atk}**
					\`Defense:     [${'█'.repeat(repeat.def)}${' '.repeat(20 - repeat.def)}]\` **${variety.stats.def}**
					\`Sp. Attack:  [${'█'.repeat(repeat.sAtk)}${' '.repeat(20 - repeat.sAtk)}]\` **${variety.stats.sAtk}**
					\`Sp. Defense: [${'█'.repeat(repeat.sDef)}${' '.repeat(20 - repeat.sDef)}]\` **${variety.stats.sDef}**
					\`Speed:       [${'█'.repeat(repeat.spd)}${' '.repeat(20 - repeat.spd)}]\` **${variety.stats.spd}**
					\`-----------------------------------\`
					\`Total:       [${'█'.repeat(repeat.total)}${' '.repeat(20 - repeat.total)}]\` **${statTotal}**
				`)
				.addField('❯ Abilities', variety.abilities.join('/'))
				.addField('❯ Smogon Tiers',
					fetchGames.map(game => {
						const smogonData = data.smogonTiers[game];
						return `[${smogonData.join('/')}](${data.smogonURL(game)}) (${games[game]})`;
					}).join('\n'))
				.addField('❯ Other Forms', stripIndents`
					_Use ${this.usage(`${data.id} <form>`)} to get stats for another form._

					**Forms Available:** ${displayForms.map(vrity => `\`${vrity.name || 'Normal'}\``).join(', ')}
				`);
			return msg.embed(embed);
		} catch (err) {
			return msg.reply(`Oh no, an error occurred: \`${err.message}\`. Try again later!`);
		}
	}
};