'use strict';

const Discord = require('discord.js');
// eslint-disable-next-line no-unused-vars
const Typings = require('../typings');

const { dateTimeGroup, formatDuration } = require('../modules');
const { debugError, findGuildConfiguration, sendMsg } = require('../handlers');

/**
 * @member {events.EventModule} events.onMemberAdd Event handler to log whenever a user joins a \<Guild>, and to assign them to the guild's visitor role and send a welcome embed
 */

/**
 * @type {Typings.EventModule}
 */
module.exports = {
	bot: ['guildMemberAdd'],
	process: [],
	/**
	 * @param {'guildMemberAdd'} _ The event that was emitted
	 * @param {Discord.GuildMember} member The \<GuildMember> that has joined a \<Guild>
	 */
	async handler(_, member) {
		const { bot } = require('../pronto');
		const { ids: { logId, recruitingId, welcomeId, visitorId }, colours } = await findGuildConfiguration(member.guild);

		// Create log embed
		const logEmbed = new Discord.MessageEmbed()
			.setColor(colours.success)
			.setAuthor('Member Joined', member.user.displayAvatarURL({ dynamic: true }))
			.setThumbnail(member.user.displayAvatarURL({ dynamic: true }))
			.setDescription(`${member} ${member.user.tag}`)
			// Parse the user's account age through modules.formatDuration()
			.addField('Account Age', formatDuration(member.user.createdAt))
			.setFooter(`Id: ${member.id} | ${await dateTimeGroup(member.guild)}`);

		// Get the guild's log channel and send the log embed
		const logChannel = bot.channels.cache.get(logId);
		sendMsg(logChannel, { embeds: [logEmbed] });

		// If the <GuildMember> is a bot, do not assign the visitor role or send a welcome embed
		if (member.user.bot) return;

		// Retrieve the guild's 'visitor' role
		const visitorRole = member.guild.roles.cache.find(visitorId);
		// Assign the visitor role to the <GuildMember>
		member.roles.add(visitorRole).catch(error => debugError(member.guild, error, `Error adding ${member} to ${visitorRole}.`));

		// Get the guild's 'new members' channel
		const welcomeChannel = bot.channels.cache.get(welcomeId);

		// Create welcome embed
		const welcomeEmbed = new Discord.MessageEmbed()
			.setColor(colours.primary)
			.setAuthor(member.user.tag, member.user.displayAvatarURL({ dynamic: true }))
			.setDescription(`**${member.displayName} has just entered ${welcomeChannel.name}.**\nMake them feel welcome!`)
			.addField('User', member.toString())
			.setFooter(await dateTimeGroup(member.guild));

		// Get the guild's recruiting channel and send the welcome embed
		const recruiting = bot.channels.cache.get(recruitingId);
		sendMsg(recruiting, { embeds: [welcomeEmbed] });
	},
};