SkirdaElectronLauncher/app/assets/js/configmanager.js

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const fs = require('fs')
const mkpath = require('mkdirp')
const os = require('os')
const path = require('path')
const uuidV4 = require('uuid/v4')
function resolveMaxRAM(){
const mem = os.totalmem()
return mem >= 8000000000 ? '4G' : (mem >= 6000000000 ? '3G' : '2G')
}
/**
* Three types of values:
* Static = Explicitly declared.
* Dynamic = Calculated by a private function.
* Resolved = Resolved externally, defaults to null.
*/
const DEFAULT_CONFIG = {
settings: {
java: {
minRAM: '2G',
maxRAM: resolveMaxRAM(), // Dynamic
executable: 'C:\\Program Files\\Java\\jdk1.8.0_152\\bin\\javaw.exe', // TODO Resolve
jvmOptions: [
'-XX:+UseConcMarkSweepGC',
'-XX:+CMSIncrementalMode',
'-XX:-UseAdaptiveSizePolicy',
'-Xmn128M'
],
},
game: {
directory: path.join(__dirname, '..', '..', '..', 'target', 'test', 'mcfiles'),
resWidth: 1280,
resHeight: 720,
fullscreen: false,
autoConnect: true
},
launcher: {
}
},
clientToken: uuidV4().replace(/-/g, ''),
selectedServer: null, // Resolved
selectedAccount: null,
authenticationDatabase: {}
}
let config = null;
// Persistance Utility Functions
/**
* Save the current configuration to a file.
*/
exports.save = function(){
const filePath = path.join(config.settings.game.directory, 'config.json')
fs.writeFileSync(filePath, JSON.stringify(config, null, 4), 'UTF-8')
}
/**
* Load the configuration into memory. If a configuration file exists,
* that will be read and saved. Otherwise, a default configuration will
* be generated. Note that "resolved" values default to null and will
* need to be externally assigned.
*/
exports.load = function(){
// Determine the effective configuration.
const EFFECTIVE_CONFIG = config == null ? DEFAULT_CONFIG : config
const filePath = path.join(EFFECTIVE_CONFIG.settings.game.directory, 'config.json')
if(!fs.existsSync(filePath)){
// Create all parent directories.
mkpath.sync(path.join(filePath, '..'))
config = DEFAULT_CONFIG
exports.save()
} else {
config = JSON.parse(fs.readFileSync(filePath, 'UTF-8'))
}
}
// System Settings (Unconfigurable on UI)
/**
* Retrieve the launcher's Client Token.
* There is no default client token.
*
* @returns {String} - the launcher's Client Token.
*/
exports.getClientToken = function(){
return config.clientToken
}
/**
* Set the launcher's Client Token.
*
* @param {String} clientToken - the launcher's new Client Token.
*/
exports.setClientToken = function(clientToken){
config.clientToken = clientToken
}
/**
* Retrieve the ID of the selected serverpack.
*
* @param {Boolean} def - optional. If true, the default value will be returned.
* @returns {String} - the ID of the selected serverpack.
*/
exports.getSelectedServer = function(def = false){
return !def ? config.selectedServer : DEFAULT_CONFIG.clientToken
}
/**
* Set the ID of the selected serverpack.
*
* @param {String} serverID - the ID of the new selected serverpack.
*/
exports.setSelectedServer = function(serverID){
config.selectedServer = serverID
}
/**
* Get an array of each account currently authenticated by the launcher.
*
* @returns {Array.<Object>} - an array of each stored authenticated account.
*/
exports.getAuthAccounts = function(){
return config.authenticationDatabase
}
/**
* Returns the authenticated account with the given uuid. Value may
* be null.
*
* @param {String} uuid - the uuid of the authenticated account.
* @returns {Object} - the authenticated account with the given uuid.
*/
exports.getAuthAccount = function(uuid){
return config.authenticationDatabase[uuid]
}
/**
* Update the access token of an authenticated account.
*
* @param {String} uuid - uuid of the authenticated account.
* @param {String} accessToken - the new Access Token.
*
* @returns {Object} - the authenticated account object created by this action.
*/
exports.updateAuthAccount = function(uuid, accessToken){
config.authenticationDatabase[uuid].accessToken = accessToken
return config.authenticationDatabase[uuid]
}
/**
* Adds an authenticated account to the database to be stored.
*
* @param {String} uuid - uuid of the authenticated account.
* @param {String} accessToken - accessToken of the authenticated account.
* @param {String} username - username (usually email) of the authenticated account.
* @param {String} displayName - in game name of the authenticated account.
*
* @returns {Object} - the authenticated account object created by this action.
*/
exports.addAuthAccount = function(uuid, accessToken, username, displayName){
config.selectedAccount = uuid
config.authenticationDatabase[uuid] = {
accessToken,
username,
uuid,
displayName
}
return config.authenticationDatabase[uuid]
}
/**
* Get the currently selected authenticated account.
*
* @returns {Object} - the selected authenticated account.
*/
exports.getSelectedAccount = function(){
return config.authenticationDatabase[config.selectedAccount]
}
// User Configurable Settings
// Java Settings
/**
* Retrieve the minimum amount of memory for JVM initialization. This value
* contains the units of memory. For example, '5G' = 5 GigaBytes, '1024M' =
* 1024 MegaBytes, etc.
*
* @param {Boolean} def - optional. If true, the default value will be returned.
* @returns {String} - the minimum amount of memory for JVM initialization.
*/
exports.getMinRAM = function(def = false){
return !def ? config.settings.java.minRAM : DEFAULT_CONFIG.settings.java.minRAM
}
/**
* Set the minimum amount of memory for JVM initialization. This value should
* contain the units of memory. For example, '5G' = 5 GigaBytes, '1024M' =
* 1024 MegaBytes, etc.
*
* @param {String} minRAM - the new minimum amount of memory for JVM initialization.
*/
exports.setMinRAM = function(minRAM){
config.settings.java.minRAM = minRAM
}
/**
* Retrieve the maximum amount of memory for JVM initialization. This value
* contains the units of memory. For example, '5G' = 5 GigaBytes, '1024M' =
* 1024 MegaBytes, etc.
*
* @param {Boolean} def - optional. If true, the default value will be returned.
* @returns {String} - the maximum amount of memory for JVM initialization.
*/
exports.getMaxRAM = function(def = false){
return !def ? config.settings.java.maxRAM : resolveMaxRAM()
}
/**
* Set the maximum amount of memory for JVM initialization. This value should
* contain the units of memory. For example, '5G' = 5 GigaBytes, '1024M' =
* 1024 MegaBytes, etc.
*
* @param {String} maxRAM - the new maximum amount of memory for JVM initialization.
*/
exports.setMaxRAM = function(maxRAM){
config.settings.java.maxRAM = maxRAM
}
/**
* Retrieve the path of the Java Executable.
*
* This is a resolved configuration value and defaults to null until externally assigned.
*
* @returns {String} - the path of the Java Executable.
*/
exports.getJavaExecutable = function(){
return config.settings.java.executable
}
/**
* Set the path of the Java Executable.
*
* @param {String} executable - the new path of the Java Executable.
*/
exports.setJavaExecutable = function(executable){
config.settings.java.executable = executable
}
/**
* Retrieve the additional arguments for JVM initialization. Required arguments,
* such as memory allocation, will be dynamically resolved and will not be included
* in this value.
*
* @param {Boolean} def - optional. If true, the default value will be returned.
* @returns {Array.<String>} - an array of the additional arguments for JVM initialization.
*/
exports.getJVMOptions = function(def = false){
return !def ? config.settings.java.jvmOptions : DEFAULT_CONFIG.settings.java.jvmOptions
}
/**
* Set the additional arguments for JVM initialization. Required arguments,
* such as memory allocation, will be dynamically resolved and should not be
* included in this value.
*
* @param {Array.<String>} jvmOptions - an array of the new additional arguments for JVM
* initialization.
*/
exports.setJVMOptions = function(jvmOptions){
config.settings.java.jvmOptions = jvmOptions
}
// Game Settings
/**
* Retrieve the absolute path of the game directory.
*
* @param {Boolean} def - optional. If true, the default value will be returned.
* @returns {String} - the absolute path of the game directory.
*/
exports.getGameDirectory = function(def = false){
return !def ? config.settings.game.directory : DEFAULT_CONFIG.settings.game.directory
}
/**
* Set the absolute path of the game directory.
*
* @param {String} directory - the absolute path of the new game directory.
*/
exports.setGameDirectory = function(directory){
config.settings.game.directory = directory
}
/**
* Retrieve the width of the game window.
*
* @param {Boolean} def - optional. If true, the default value will be returned.
* @returns {Number} - the width of the game window.
*/
exports.getGameWidth = function(def = false){
return !def ? config.settings.game.resWidth : DEFAULT_CONFIG.settings.game.resWidth
}
/**
* Set the width of the game window.
*
* @param {Number} resWidth - the new width of the game window.
*/
exports.setGameWidth = function(resWidth){
config.settings.game.resWidth = resWidth
}
/**
* Retrieve the height of the game window.
*
* @param {Boolean} def - optional. If true, the default value will be returned.
* @returns {Number} - the height of the game window.
*/
exports.getGameHeight = function(def = false){
return !def ? config.settings.game.resHeight : DEFAULT_CONFIG.settings.game.resHeight
}
/**
* Set the height of the game window.
*
* @param {Number} resHeight - the new height of the game window.
*/
exports.setGameHeight = function(resHeight){
config.settings.game.resHeight = resHeight
}
/**
* Check if the game should be launched in fullscreen mode.
*
* @param {Boolean} def - optional. If true, the default value will be returned.
* @returns {Boolean} - whether or not the game is set to launch in fullscreen mode.
*/
exports.isFullscreen = function(def = false){
return !def ? config.settings.game.fullscreen : DEFAULT_CONFIG.settings.game.fullscreen
}
/**
* Change the status of if the game should be launched in fullscreen mode.
*
* @param {Boolean} fullscreen - whether or not the game should launch in fullscreen mode.
*/
exports.setFullscreen = function(fullscreen){
config.settings.game.fullscreen = fullscreen
}
/**
* Check if the game should auto connect to servers.
*
* @param {Boolean} def - optional. If true, the default value will be returned.
* @returns {Boolean} - whether or not the game should auto connect to servers.
*/
exports.isAutoConnect = function(def = false){
return !def ? config.settings.game.autoConnect : DEFAULT_CONFIG.settings.game.autoConnect
}
/**
* Change the status of whether or not the game should auto connect to servers.
*
* @param {Boolean} autoConnect - whether or not the game should auto connect to servers.
*/
exports.setAutoConnect = function(autoConnect){
config.settings.game.autoConnect = autoConnect
}