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app.js
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app.js
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/**
* Main file
* Pokemon Showdown - http://pokemonshowdown.com/
*
* This is the main Pokemon Showdown app, and the file you should be
* running to start Pokemon Showdown if you're using it normally.
*
* This file sets up our SockJS server, which handles communication
* between users and your server, and also sets up globals. You can
* see details in their corresponding files, but here's an overview:
*
* Users - from users.js
*
* Most of the communication with users happens in users.js, we just
* forward messages between the sockets.js and users.js.
*
* Rooms - from rooms.js
*
* Every chat room and battle is a room, and what they do is done in
* rooms.js. There's also a global room which every user is in, and
* handles miscellaneous things like welcoming the user.
*
* Dex - from sim/dex.js
*
* Handles getting data about Pokemon, items, etc.
*
* Ladders - from ladders.js and ladders-remote.js
*
* Handles Elo rating tracking for players.
*
* Chat - from chat.js
*
* Handles chat and parses chat commands like /me and /ban
*
* Sockets - from sockets.js
*
* Used to abstract out network connections. sockets.js handles
* the actual server and connection set-up.
*
* @license MIT
*/
'use strict';
// NOTE: This file intentionally doesn't use too many modern JavaScript
// features, so that it doesn't crash old versions of Node.js, so we
// can successfully print the "We require Node.js 8+" message.
// Check for version and dependencies
try {
// I've gotten enough reports by people who don't use the launch
// script that this is worth repeating here
eval('{ let a = async () => {}; }');
} catch (e) {
throw new Error("We require Node.js version 8 or later; you're using " + process.version);
}
try {
require.resolve('sockjs');
} catch (e) {
throw new Error("Dependencies are unmet; run node pokemon-showdown before launching Pokemon Showdown again.");
}
const FS = require('./lib/fs');
/*********************************************************
* Load configuration
*********************************************************/
try {
require.resolve('./config/config');
} catch (err) {
if (err.code !== 'MODULE_NOT_FOUND') throw err; // should never happen
throw new Error('config.js does not exist; run node pokemon-showdown to set up the default config file before launching Pokemon Showdown again.');
}
global.Config = require('./config/config');
global.Monitor = require('./monitor');
if (Config.watchconfig) {
let configPath = require.resolve('./config/config');
FS(configPath).onModify(() => {
try {
delete require.cache[configPath];
global.Config = require('./config/config');
if (global.Users) Users.cacheGroupData();
Monitor.notice('Reloaded config/config.js');
} catch (e) {
Monitor.adminlog("Error reloading config/config.js: " + e.stack);
}
});
}
/*********************************************************
* Set up most of our globals
*********************************************************/
global.Server = {};
global.Dex = require('./sim/dex');
global.toId = Dex.getId;
global.LoginServer = require('./loginserver');
global.Ladders = require('./ladders');
global.Users = require('./users');
global.Punishments = require('./punishments');
global.Console = require('./console.js');
global.Chat = require('./chat');
global.Rooms = require('./rooms');
global.Tells = require('./tells');
global.Ontime = {};
global.Db = require('origindb')('config/db');
delete process.send; // in case we're a child process
global.Verifier = require('./verifier');
Verifier.PM.spawn();
global.Tournaments = require('./tournaments');
global.Dnsbl = require('./dnsbl');
Dnsbl.loadDatacenters();
if (Config.crashguard) {
// graceful crash - allow current battles to finish before restarting
process.on('uncaughtException', err => {
let crashType = require('./lib/crashlogger')(err, 'The main process');
if (crashType === 'lockdown') {
Rooms.global.startLockdown(err);
} else {
Rooms.global.reportCrash(err);
}
});
process.on('unhandledRejection', err => {
let crashType = require('./lib/crashlogger')(err, 'A main process Promise');
if (crashType === 'lockdown') {
Rooms.global.startLockdown(err);
} else {
Rooms.global.reportCrash(err);
}
});
}
/*********************************************************
* Start networking processes to be connected to
*********************************************************/
global.Sockets = require('./sockets');
exports.listen = function (port, bindAddress, workerCount) {
Sockets.listen(port, bindAddress, workerCount);
};
if (require.main === module) {
// Launch the server directly when app.js is the main module. Otherwise,
// in the case of app.js being imported as a module (e.g. unit tests),
// postpone launching until app.listen() is called.
let port;
if (process.argv[2]) port = parseInt(process.argv[2]);
Sockets.listen(port);
}
/*********************************************************
* Set up our last global
*********************************************************/
global.TeamValidatorAsync = require('./team-validator-async');
TeamValidatorAsync.PM.spawn();
// uptime recording
FS('./logs/uptime.txt').readIfExistsSync(function (err, uptime) {
if (!err) global.uptimeRecord = parseInt(uptime, 10); // eslint-disable-line radix
global.uptimeRecordInterval = setInterval(function () {
if (global.uptimeRecord && process.uptime() <= global.uptimeRecord) return;
global.uptimeRecord = process.uptime();
FS('./logs/uptime.txt').write(global.uptimeRecord.toFixed(0));
}, 1 * 60 * 60 * 1000);
});
/*********************************************************
* Start up the githubhook server
********************************************************/
require('./github');
/*********************************************************
* Start up the REPL server
*********************************************************/
require('./lib/repl').start('app', cmd => eval(cmd));