/**
 * DiscordTickets
 * Copyright (C) 2021 Isaac Saunders
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 * 
 * @name @eartharoid/discord-tickets
 * @description An open-source Discord bot for ticket management
 * @copyright 2021 Isaac Saunders
 * @license GNU-GPLv3
 */

const node_version = Number(process.versions.node.split('.')[0]);
if (node_version < 14)
	return console.log(`Error: DiscordTickets does not work on Node v${node_version}. Please upgrade to v14 or above.`);

const fs = require('fs');
const { path } = require('./utils/fs');

const checkFile = (file, example) => {

	file = path(file);
	example = path(example);

	if (fs.existsSync(file)) return true;
	if (!fs.existsSync(example)) {
		console.log(`Error: '${file}' not found, and unable to create it due to '${example}' being missing`);
		return process.exit();
	}

	console.log(`Copying '${example}' to '${file}'`);
	fs.copyFileSync(example, file);
	return false;

};

if (!checkFile('./.env', './example.env')) {
	console.log('Please set your bot\'s token in \'.env\'');
	process.exit();
}

checkFile('./user/config.js', './user/example.config.js');

require('dotenv').config({
	path: path('./.env')
});

const config = require('../user/config');

require('./banner')();

const log = require('./logger');

const { selectPresence } = require('./utils/discord');
const I18n = require('@eartharoid/i18n');
const CommandManager = require('./modules/commands/manager');
const PluginManager = require('./modules/plugins/manager');
const TicketManager = require('./modules/tickets');

require('./modules/structures')(); // load extended structures before creating the client

const {
	Client,
	Intents
} = require('discord.js');

/**
 * The bot client
 * @extends {Client}
 */
class Bot extends Client {
	constructor() {
		super({
			partials: [
				'MESSAGE',
				'CHANNEL',
				'REACTION'
			],
			presence: selectPresence(),
			ws: {
				intents: Intents.NON_PRIVILEGED,
			}
		});
		
		(async () => {
			/** The global bot configuration */
			this.config = config;

			/** A sequelize instance */
			this.db = await require('./database')(log), // this.db.models.Ticket...

			/** A leekslazylogger instance */
			this.log = log;

			/** An @eartharoid/i18n instance */
			this.i18n = new I18n(path('./src/locales'), 'en-GB');

			this.setMaxListeners(this.config.max_listeners); // set the max listeners for each event
	
			require('./updater')(this); // check for updates
			require('./modules/listeners')(this); // load internal listeners

			/** The ticket manager */
			this.tickets = new TicketManager(this);

			/** The command manager, used by internal and plugin commands */
			this.commands = new CommandManager(this);

			/** The plugin manager */
			this.plugins = new PluginManager(this);
			this.plugins.load(); // load plugins

			this.log.info('Connecting to Discord API...');

			this.login();
		})();
	}

	async postStats() {
		/**
		 * OH NO, TELEMETRY!?
		 * Relax, it just counts how many people are using DiscordTickets.
		 * You can see the source here: https://github.com/discord-tickets/stats
		 */
		if (this.config.super_secret_setting) { // you can disable it if you really want
			const fetch = require('node-fetch');
			let tickets = await this.db.models.Ticket.count();
			fetch(`https://stats.discordtickets.app/client?id=${this.user.id}&tickets=${tickets}`, {
				method: 'post',
			}).catch(e => {
				// fail quietly, it doesn't really matter if it didn't work
				this.log.debug(e);
			});
			this.guilds.cache.forEach(async g => {
				let members = (await g.fetch()).approximateMemberCount;
				fetch(`https://stats.discordtickets.app/guild?id=${g.id}&members=${members}`, {
					method: 'post',
				}).catch(e => {
					this.log.debug(e);
				});
			});
		}
	}

}

new Bot();

const { version } = require('../package.json');
process.on('unhandledRejection', error => {
	log.notice('PLEASE INCLUDE THIS INFORMATION IF YOU ASK FOR HELP ABOUT THE FOLLOWING ERROR:');
	log.notice(`Discord Tickets v${version}, Node v${process.versions.node} on ${process.platform}`);
	log.warn('An error was not caught');
	if (error instanceof Error) log.warn(`Uncaught ${error.name}`);
	log.error(error);
});