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