HeliosLauncher/app/assets/js/dropinmodutil.js
2018-08-07 04:41:26 -04:00

106 lines
3.5 KiB
JavaScript

const fs = require('fs')
const path = require('path')
const { shell } = require('electron')
// Group #1: File Name (without .disabled, if any)
// Group #2: File Extension (jar, zip, or litemod)
// Group #3: If it is disabled (if string 'disabled' is present)
const MOD_REGEX = /^(.+(jar|zip|litemod))(?:\.(disabled))?$/
const DISABLED_EXT = '.disabled'
/**
* Scan for drop-in mods in both the mods folder and version
* safe mods folder.
*
* @param {string} modsDir The path to the mods directory.
* @param {string} version The minecraft version of the server configuration.
*
* @returns {{fullName: string, name: string, ext: string, disabled: boolean}[]}
* An array of objects storing metadata about each discovered mod.
*/
exports.scanForDropinMods = function(modsDir, version) {
const modsDiscovered = []
if(fs.existsSync(modsDir)){
let modCandidates = fs.readdirSync(modsDir)
let verCandidates = []
const versionDir = path.join(modsDir, version)
if(fs.existsSync(versionDir)){
verCandidates = fs.readdirSync(versionDir)
}
for(let file of modCandidates){
const match = MOD_REGEX.exec(file)
if(match != null){
modsDiscovered.push({
fullName: match[0],
name: match[1],
ext: match[2],
disabled: match[3] != null
})
}
}
for(let file of verCandidates){
const match = MOD_REGEX.exec(file)
if(match != null){
modsDiscovered.push({
fullName: path.join(version, match[0]),
name: match[1],
ext: match[2],
disabled: match[3] != null
})
}
}
}
return modsDiscovered
}
/**
* Delete a drop-in mod from the file system.
*
* @param {string} modsDir The path to the mods directory.
* @param {string} fullName The fullName of the discovered mod to delete.
*
* @returns {boolean} True if the mod was deleted, otherwise false.
*/
exports.deleteDropinMod = function(modsDir, fullName){
const res = shell.moveItemToTrash(path.join(modsDir, fullName))
if(!res){
shell.beep()
}
return res
}
/**
* Toggle a discovered mod on or off. This is achieved by either
* adding or disabling the .disabled extension to the local file.
*
* @param {string} modsDir The path to the mods directory.
* @param {string} fullName The fullName of the discovered mod to toggle.
* @param {boolean} enable Whether to toggle on or off the mod.
*
* @returns {Promise.<void>} A promise which resolves when the mod has
* been toggled. If an IO error occurs the promise will be rejected.
*/
exports.toggleDropinMod = function(modsDir, fullName, enable){
return new Promise((resolve, reject) => {
const oldPath = path.join(modsDir, fullName)
const newPath = path.join(modsDir, enable ? fullName.substring(0, fullName.indexOf(DISABLED_EXT)) : fullName + DISABLED_EXT)
fs.rename(oldPath, newPath, (err) => {
if(err){
reject(err)
} else {
resolve()
}
})
})
}
/**
* Check if a drop-in mod is enabled.
*
* @param {string} fullName The fullName of the discovered mod to toggle.
* @returns {boolean} True if the mod is enabled, otherwise false.
*/
exports.isDropinModEnabled = function(fullName){
return !fullName.endsWith(DISABLED_EXT)
}