added vue as front-end framework

.gitignore

@@ -3,3 +3,4 @@ game
 out/
 .vscode/
 *.code-workspace
+.idea

README.md

@@ -1,6 +1 @@
 # Launcher
-
-## Dependencies
-
-- <https://www.npmjs.com/package/electron>
-- <https://www.npmjs.com/package/minecraft-launcher-core>

package-lock.json

@@ -7500,6 +7500,11 @@
         "extsprintf": "^1.2.0"
       }
     },
+    "vue": {
+      "version": "2.6.14",
+      "resolved": "https://registry.npmjs.org/vue/-/vue-2.6.14.tgz",
+      "integrity": "sha512-x2284lgYvjOMj3Za7kqzRcUSxBboHqtgRE2zlos1qWaOye5yUmHn42LB1250NJBLRwEcdrB0JRwyPTEPhfQjiQ=="
+    },
     "wcwidth": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/wcwidth/-/wcwidth-1.0.1.tgz",

package.json

@@ -36,7 +36,8 @@
     "extract-zip": "^2.0.1",
     "hasha": "^5.2.2",
     "minecraft-launcher-core": "^3.16.8",
-    "msmc": "^2.2.1"
+    "msmc": "^2.2.1",
+    "vue": "^2.6.14"
   },
   "config": {
     "forge": "./config.forge.js"

src/client/assets/css/index.css

@@ -148,7 +148,6 @@ h3 {
 	width: 100%;
 	height: calc(100% - 28px);
 	background-color: rgba(0, 0, 0, 0.6);
-	display: none;
 	z-index: 10;
 }
 
@@ -212,3 +211,10 @@ h3 {
 	border-width:0;
 	border-top: 1px solid black;
 }
+
+/* .slider {
+	min-width: 60%;
+	position:relative;
+	left:50%;
+	transform: translateX(-50%);
+} */

src/client/assets/css/menubar.css

@@ -65,3 +65,8 @@
 	position: relative;
     top: 2px;
 }
+
+#vue {
+	width: 100vw;
+	height: 100vh;
+}

src/client/assets/js/index.js

@@ -1,50 +1,48 @@
 const os = require('os')
-const launchBtn = document.querySelector('#launch-btn')
-const launchText = document.querySelector("#launch-text")
-const fullProgressBar = document.querySelector('#fullprogressbar')
-const progressBar = document.querySelector('#progressbar')
-const loadingMessage = document.querySelector('#loading-message')
-const disconnectBtn = document.querySelector('#disconnect-btn')
-const fullscreen = document.querySelector('#fullscreen')
-const minMem = document.querySelector('#minMem')
-const maxMem = document.querySelector('#maxMem')
-const outputMinMem = document.querySelector('#outputMinMem')
-const outputMaxMem = document.querySelector('#outputMaxMem')
 const totalMem = os.totalmem() / (1.049 * Math.pow(10, 6))
-const sidebar = document.querySelector("#sidebar-content")
-const invalidateButton = document.querySelector("#invalidateData")
-let gameLaunching = false
 
-let selectedChapter = -1;
-
-document.body.onload = () => {
-    minMem.max = totalMem
-    maxMem.max = totalMem
-    minMem.value = localStorage.getItem("minMem") != null ? localStorage.getItem("minMem") : 1024 
-    outputMinMem.textContent = minMem.value
-    maxMem.value = localStorage.getItem("maxMem") != null ? localStorage.getItem("maxMem") : 2048
-    outputMaxMem.textContent = maxMem.value
-    demandModsInformations()
-}
-
-ipcRenderer.on("nick", (event, args) => {
-    console.log(args)
-    document.querySelector("#nick").innerHTML = args.name
-})
-
-launchBtn.addEventListener("click", e => {
-    launchText.classList.add('hidden')
-    fullProgressBar.classList.remove('hidden')
-    loadingMessage.classList.remove('hidden')
-    if(Number(minMem.value) <= Number(maxMem.value)){
+let app = new vue({
+    el: "#vue",
+    data: {
+        minMemValue: localStorage.getItem("minMem") != null ? localStorage.getItem("minMem") : 1024 ,
+        maxMemValue: localStorage.getItem("maxMem") != null ? localStorage.getItem("maxMem") : 2048,
+        memStep: 128,
+        memMax: totalMem,
+        invalidateButtonText: "Supprimer et retélécharger les bibliothèques",
+        invalidateButtonDisabled: false,
+        displayFullscreen: "none",
+        nick: "Chargement",
+        launchBtnText: "Selectionnez un chapitre",
+        launchBtnDisable: true,
+        launchBtnHidden: false,
+        loadingMessageHidden: true,
+        loadingMessageText: "Téléchargement de Minecraft en cours...",
+        fullprogressbarHidden: true,
+        progressbarWidth: 0,
+        sidebarContent: "<hr><p>Chargement en cours</p>"
+    },
+    mounted: function () {
+        this.demandModsInformations()
+    },
+    methods: {
+        invalidateData: function () {
+            this.invalidateButtonDisabled = true
+            this.invalidateButtonText = "Opération en cours"
+            ipcRenderer.send('invalidateData')
+        },
+        launchBtnClick: function () {
+            this.launchBtnHidden = true
+            this.fullprogressbarHidden = false
+            app.loadingMessageHidden = false
+            if(Number(this.minMemValue) <= Number(this.maxMemValue)){
                 ipcRenderer.send('launch', {
-            minMem: minMem.value + "M",
-            maxMem: maxMem.value + "M",
+                    minMem: this.minMemValue + "M",
+                    maxMem: this.maxMemValue + "M",
                     chapter: selectedChapter
                 })
-        launchBtn.disabled = true
-        localStorage.setItem("minMem", minMem.value)
-        localStorage.setItem("maxMem", maxMem.value)
+                app.launchBtnDisable = true
+                localStorage.setItem("minMem", this.minMemValue)
+                localStorage.setItem("maxMem", this.maxMemValue)
                 gameLaunching = true
             } else{
                 ipcRenderer.send('notification', {
@@ -52,92 +50,77 @@ launchBtn.addEventListener("click", e => {
                     body: "La mémoire minimale doit être inférieure ou égale à la mémoire maximale"
                 })
             }
-    
-})
-
-document.querySelector("#web").addEventListener("click", e => {
-    shell.openExternal("https://altarik.fr")
-})
-
-document.querySelector("#options").addEventListener("click", e => {
+        },
+        disconnectBtn: function () {
+            ipcRenderer.send('disconnect')
+        },
+        options: function () {
             if(!gameLaunching)
-        fullscreen.style.display = "block"
+                this.displayFullscreen = "block"
+        },
+        discord: () => shell.openExternal("https://discord.gg/b923tMhmRE"),
+        web: () => shell.openExternal("https://altarik.fr"),
+        closeFullscreen: function () {
+            this.displayFullscreen = "none"
+        },
+        demandModsInformations: function () {
+            ipcRenderer.send('demandModsInformations')
+        }
+    }
 })
 
-document.querySelector("#discord").addEventListener("click", e => {
-    shell.openExternal("https://discord.gg/b923tMhmRE")
-})
+const sidebar = document.querySelector("#sidebar-content")
+let gameLaunching = false
 
-document.querySelector("#close").addEventListener("click", e => {
-    fullscreen.style.display = "none"
-});
+let selectedChapter = -1;
 
-invalidateButton.addEventListener("click", e => {
-    invalidateButton.disabled = true
-    invalidateButton.childNodes[0].nodeValue = "Opération en cours"
-    ipcRenderer.send('invalidateData')
-})
+ipcRenderer.on("nick", (_, args) => app.nick = args.name)
 
 ipcRenderer.on("invalidated", e => {
-    invalidateButton.disabled = false
-    invalidateButton.childNodes[0].nodeValue = "Supprimer et retélécharger les bibliothèques"
+    app.invalidateButtonDisabled = false
+    app.invalidateButtonText = "Supprimer et retélécharger les bibliothèques"
 })
 
 ipcRenderer.on("progress", (e, args) => {
-    progressBar.style.width = (args.task / Math.max(args.total, args.task)) * 100 + "%"
-    loadingMessage.innerHTML = "Téléchargement de " + args.type + ": " + args.task + " sur " + Math.max(args.total, args.task)
+    app.progressbarWidth =  (args.task / Math.max(args.total, args.task)) * 100
+    app.loadingMessageText =  "Téléchargement de " + args.type + ": " + args.task + " sur " + Math.max(args.total, args.task)
 })
 
-ipcRenderer.on("close", (e, args) => {
-    launchText.classList.remove('hidden')
-    fullProgressBar.classList.add('hidden')
-    loadingMessage.classList.add('hidden')
-    loadingMessage.innerHTML = "Chargement de Minecraft en cours..."
-    progressBar.style.width = "0"
-    launchBtn.disabled = false
+ipcRenderer.on("close", (_e, _args) => {
+    app.launchBtnHidden = false
+    app.fullprogressbarHidden = true
+    app.loadingMessageHidden = true
+    app.loadingMessageText = "Chargement de Minecraft en cours..."
+    app.progressbarWidth = 0
+    app.launchBtnDisable = false
     gameLaunching = false
 })
 
-ipcRenderer.on('launch', (e, args) => {
-    fullProgressBar.classList.add('hidden')
-    loadingMessage.classList.add('hidden')
+ipcRenderer.on('launch', (_e, _args) => {
+    app.fullprogressbarHidden = true
+    app.loadingMessageText = true
 })
 
 ipcRenderer.on("modsInformations", (e, args) => {
+    console.log(args)
     if(args === null) {
-        sidebar.innerHTML = "<hr><p>Une erreur est survenue lors de la récupération des informations, vérifiez votre connexion internet puis cliquez sur réessayez</p>"
-        + "<button onclick=\"demandModsInformations()\">Réessayer</button>"
+        app.sidebarContent = "<hr><p>Une erreur est survenue lors de la récupération des informations, vérifiez votre connexion internet puis cliquez sur réessayez</p>"
+        + "<button onclick=\"app.demandModsInformations()\">Réessayer</button>"
     } else {
         let element = ""
         for(const i in args) {
             element += `<hr><div data-chapter="${i}" onclick="changeSelectedChapter(this)"><h3>${args[i].title}</h3><p>${args[i].description}</p></div>`
         }
-        sidebar.innerHTML = element
+        app.sidebarContent = element
     }
 })
 
-function demandModsInformations() {
-    ipcRenderer.send('demandModsInformations')
-}
-
 function changeSelectedChapter(element) {
     selectedChapter = Number(element.dataset.chapter)
     document.querySelectorAll("#sidebar-content > div").forEach((v, key) => {
         v.classList.remove("selected")
     })
     element.classList.add("selected")
-    launchText.innerHTML = "JOUER"
-    launchBtn.disabled = false
+    app.launchBtnText = "JOUER"
+    app.launchBtnDisable = false
 }
-
-disconnectBtn.addEventListener('click', e => {
-    ipcRenderer.send('disconnect')
-})
-
-minMem.addEventListener("input", e => {
-    outputMinMem.textContent = e.target.value
-})
-
-maxMem.addEventListener("input", e => {
-    outputMaxMem.textContent = e.target.value
-})

src/client/assets/js/login.js

@@ -1,9 +1,16 @@
-const form = document.querySelector('#login-form')
-const user = document.querySelector('#nickname')
-const password = document.querySelector('#password')
-const microsoftButton = document.querySelector("#microsoft-button")
 
-form.addEventListener("submit", (e) => {
+
+let app = new vue({
+    el: "#vue",
+    data: {
+        login: "Connexion",
+        email: "Email",
+        password: "Mot de passe",
+        send_credentials: "Se connecter",
+        microsoft_button: "Connexion avec un compte Microsoft"
+    },
+    methods: {
+        formSubmit: (e) => {
             e.preventDefault()
             if(!microsoftButton.disabled) {
                 form.disabled = true
@@ -19,18 +26,25 @@ form.addEventListener("submit", (e) => {
                     })
                 }
             }
-})
-
-microsoftButton.addEventListener("click", (e) => {
+        },
+        microsoftButton: (e) => {
             e.preventDefault()
             if(!form.disabled) {
                 microsoftButton.disabled = true
                 form.disabled = true
                 ipcRenderer.send("microsoft-login")
             }
-})
+        }
+    }
+});
 
-ipcRenderer.on("loginError", event => {
+// theirs const are declared after vue cause vue modify them when declaring new vue instance
+const form = document.querySelector('#login-form')
+const user = document.querySelector('#nickname')
+const password = document.querySelector('#password')
+const microsoftButton = document.querySelector("#microsoft-button")
+
+ipcRenderer.on("loginError", () => {
     form.disabled = false
     microsoftButton.disabled = false
 })

src/client/assets/js/script.js

@@ -1,5 +1,7 @@
 'use strict';
 const { ipcRenderer, shell } = require('electron');
+// const isDev = require("electron-is-dev")
+const vue = require(/*isDev ? */ 'vue/dist/vue'/* : 'vue' */)
 
 window.addEventListener("DOMContentLoaded", () => {
     const minimizeButton = document.getElementById("minimize-btn")

src/client/index.html

@@ -3,13 +3,14 @@
 <head>
     <meta charset="UTF-8">
     <title>Altarik Launcher</title>
-    <meta http-equiv="Content-Security-Policy" content="script-src 'self' 'unsafe-inline';" />
+    <meta http-equiv="Content-Security-Policy" content="script-src 'self' 'unsafe-inline' 'unsafe-eval';" />
     <link href="assets/css/fonts.css" rel="stylesheet" />
     <link href="assets/css/index.css" rel="stylesheet" />
     <link href="assets/css/menubar.css" rel="stylesheet" />
     <link rel="shortcut icon" type="image/png" href="assets/images/icon.png"/>
 </head>
 <body>
+    <div id="vue">
         <div id="menubar">
             <ul class="left">
                 <img src="../../icon.ico">
@@ -19,50 +20,48 @@
                 <li id="minimize-btn"><i class="material-icons">minimize</i></li><!--<li id="max-unmax-btn"><i class="material-icons">crop_square</i></li>--><li id="close-btn"><i class="material-icons">close</i></li>
             </ul>
         </div>
-    <div id="fullscreen">
-        <div id="close"><i class="material-icons">close</i></div>
+        <div id="fullscreen" :style="{ display: displayFullscreen }">
+            <div @click="closeFullscreen" id="close"><i class="material-icons">close</i></div>
             <div id="settings">
                     <h2>Modifier la configuration</h2>
-                <span href="" id="disconnect-btn">Se déconnecter</span>
+                    <span href="" id="disconnect-btn" @click="disconnectBtn">Se déconnecter</span>
                     <h4>Allocation mémoire</h4>
-                <label for="minMem">mémoire minimale : <span id="outputMinMem"></span></label><br />
-                <input type="range" min="1024" max="2048" step="128" value="1" class="slider" id="minMem"><br />
-                <label for="maxMem">mémoire maximale : <span id="outputMaxMem"></span></label><br />
-                <input type="range" min="1024" max="2048" step="128" value="1" class="slider" id="maxMem"><br />
+                    <label for="minMem">mémoire minimale : <span id="outputMinMem">{{ minMemValue }}</span></label><br />
+                    <input type="number" min="1024" :max="memMax" :step="memStep" v-model="minMemValue" class="slider" id="minMem"><br />
+                    <label for="maxMem">mémoire maximale : <span id="outputMaxMem">{{ maxMemValue }}</span></label><br />
+                    <input type="number" min="1024" :max="memMax" :step="memStep" v-model="maxMemValue" class="slider" id="maxMem"><br />
                     <h4>Au secours, mon jeu ne démarre pas</h4>
-                <button id="invalidateData">Supprimer et retélécharger les bibliothèques</button>
+                    <button @click="invalidateData" :disabled="invalidateButtonDisabled">{{ invalidateButtonText }}</button>
             </div>
         </div>
         <div id="content">
             <div id="sidebar">
                 <h2>Chapitres</h2>
-            <div id="sidebar-content">
-
-            </div>
+                <div id="sidebar-content" v-html="sidebarContent"></div>
             </div>
             <div id="media">
-            <div id="options">
+                <div @click="options">
                     <img src="assets/images/settings.png">
                 </div>
-            <div id="discord">
+                <div @click="discord">
                     <img src="assets/images/discord.png">
                 </div>
-            <div id="web">
+                <div @click="web">
                     <img src="assets/images/web.png">
                 </div>
                 
             </div>
             <div id="main">
                 <div id="account">
-                <div id="nick"></div><!-- <img src=""> Head du joueur -->
+                    <div id="nick">{{ nick }}</div><!-- <img src=""> Head du joueur -->
                 </div>
-            <button id="launch-btn" disabled>
-                <div id="launch-text">Selectionnez un chapitre</div>
-                <div id="loading-message" class="hidden">Téléchargement de Minecraft en cours...</div>
-                <div id="fullprogressbar" class="hidden"><div id="progressbar"></div></div>
+                <button @click="launchBtnClick" id="launch-btn" :disabled="launchBtnDisable">
+                    <div id="launch-text" :class="[{hidden: launchBtnHidden}]">{{ launchBtnText }}</div>
+                    <div id="loading-message" :class="[{hidden: loadingMessageHidden}]">{{ loadingMessageText }}</div>
+                    <div id="fullprogressbar" :class="[{hidden: fullprogressbarHidden}]"><div id="progressbar" :style="{ width: progressbarWidth + '%' }"></div></div>
                 </button>
             </div>
-    </p>
+        </div>
     </div>
     <script src="assets/js/script.js"></script>
     <script src="assets/js/index.js"></script>

src/client/login.html

@@ -3,13 +3,14 @@
 <head>
     <meta charset="UTF-8">
     <title>Altarik Launcher</title>
-    <meta http-equiv="Content-Security-Policy" content="script-src 'self' 'unsafe-inline';" />
+    <meta http-equiv="Content-Security-Policy" content="script-src 'self' 'unsafe-inline' 'unsafe-eval';" />
     <link href="assets/css/fonts.css" rel="stylesheet" />
     <link href="assets/css/login.css" rel="stylesheet" />
     <link href="assets/css/menubar.css" rel="stylesheet" />
     <link rel="shortcut icon" type="image/png" href="assets/images/icon.png"/>
 </head>
 <body>
+    <div id="vue">
         <div id="menubar">
             <ul class="left">
                 <img src="../../icon.ico">
@@ -21,19 +22,20 @@
         </div>
         <div id="content">
             <div id="login">
-            <h3>Connexion</h3>
+                <h3>{{ login }}</h3>
                 <hr>
-            <form id="login-form">
-                <label for="nickname">Email:</label><br />
+                <form v-on:submit="formSubmit" id="login-form">
+                    <label for="nickname">{{ email }}:</label><br />
                     <input type="text" name="nickname" id="nickname"><br />
-                <label for="password">Mot de passe:</label><br />
+                    <label for="password">{{ password }}:</label><br />
                     <input type="password" name="password" id="password"><br />
-                <input type="submit" value="Se connecter">
+                    <input type="submit" v-bind:value="send_credentials">
                 </form>
             </div>
-        <button id="microsoft-button">Connexion avec un compte Microsoft</button>
+            <button id="microsoft-button" v-on:click="microsoftButton">{{ microsoft_button }}</button>
         </div>
         
+    </div>
     <script src="assets/js/script.js"></script>
     <script src="assets/js/login.js"></script>
 </body>

src/server/main.js

@@ -9,6 +9,7 @@ if (require('electron-squirrel-startup')) {
 require('./updater.js').configUpdater(app, autoUpdater, dialog, logger) 
 
 const minecraft = require('./minecraft.js')
+minecraft.showNotification = showNotification
 
 const iconPath = join(__dirname, "icon.ico")
 let win = null
@@ -29,7 +30,7 @@ function createWindow () {
         frame: false,
         nativeWindowOpen: true
     })
-    Menu.setApplicationMenu(null)
+    // Menu.setApplicationMenu(null)
     win.loadFile('src/client/login.html')
     win.on("close", () => {
         app.quit()
@@ -65,11 +66,11 @@ app.on('activate', () => {
 })
 
 ipcMain.on("login", (event, args) => {
-    minecraft.login(event, win, showNotification, args.user, args.pass)
+    minecraft.login(event, win, args.user, args.pass)
 })
 
 ipcMain.on("microsoft-login", (event, args) => {
-    minecraft.microsoftLogin(event, win, showNotification)
+    minecraft.microsoftLogin(event, win)
 })
 
 ipcMain.on("invalidateData", event => {
@@ -77,7 +78,7 @@ ipcMain.on("invalidateData", event => {
 })
 
 ipcMain.on("launch", (event, args) => {
-  minecraft.launch(event, showNotification, args)
+  minecraft.launch(event, args)
 })
 
 function showNotification(title, body="") {

src/server/minecraft.js

@@ -16,11 +16,16 @@ class Minecraft {
     launcher = new Client()
     auth = null
     modsList = undefined
+    showNotification = undefined
+
+    setShowNotification(showNotification) {
+        this.showNotification = showNotification
+    }
 
     /**
      * Used to login through Mojang account
      */
-    login(event, win, showNotification, username, password) {
+    login(event, win, username, password) {
         this.auth = null
         if(isDev || password.trim() !== "") {
             this.auth = Authenticator.getAuth(username, password)
@@ -31,23 +36,23 @@ class Minecraft {
             }).catch((err) => {
                 event.sender.send("loginError")
                 logger.error("[MJ login] User haven't purchase the game")
-                showNotification("Erreur de connexion")
+                this.showNotification("Erreur de connexion")
             })
         } else {
-            showNotification("Veuillez renseignez un mot de passe")
+            this.showNotification("Veuillez renseignez un mot de passe")
         }
     }
 
     /**
      * Used to login through a Microsoft account
      */
-    microsoftLogin(event, win, showNotification) {
+    microsoftLogin(event, win) {
         msmc.fastLaunch("electron",
         (update) => {
             switch (update.type) {
                 case "Error":
                     event.sender.send("loginError")
-                    showNotification("Une erreur est survenue", update.data)
+                    this.showNotification("Une erreur est survenue", update.data)
                     logger.error("MC-Account error:", update.data);
                   break;
               }
@@ -55,7 +60,7 @@ class Minecraft {
             if(msmc.errorCheck(result)) {
                 event.sender.send("loginError")
                 logger.error(result.reason)
-                showNotification("Erreur de connexion", result.reason)
+                this.showNotification("Erreur de connexion", result.reason)
             } else {
                 if(!msmc.isDemoUser(result)) {
                     this.auth = msmc.getMCLC().getAuth(result)
@@ -65,17 +70,17 @@ class Minecraft {
                 } else {
                     event.sender.send("loginError")
                     logger.error("[MS login] User haven't purchase the game")
-                    showNotification("Erreur de connexion", "Vous ne possèdez pas de licence Minecraft sur ce compte")
+                    this.showNotification("Erreur de connexion", "Vous ne possèdez pas de licence Minecraft sur ce compte")
                 }
             }
         }).catch(reason => {
             event.sender.send("loginError")
             logger.error(reason)
-            showNotification("Erreur de connexion")
+            this.showNotification("Erreur de connexion")
         })
     }
 
-    launch(event, showNotification, args) {
+    launch(event, args) {
         this.extractJava(Number(args.chapter), event).then((javaPath) => {
             this.extractMods(Number(args.chapter), event).then((chapter) => {
                 this.launcher.launch({
@@ -108,17 +113,17 @@ class Minecraft {
                     if(e !== 0) {
                         logger.warn("Minecraft didn't close properly")
                         logger.warn(e)
-                        showNotification("Une erreur est survenue", "Minecraft ne s'est pas fermé correctement")
+                        this.showNotification("Une erreur est survenue", "Minecraft ne s'est pas fermé correctement")
                     }
                 })
             }).catch((err) => {
-                showNotification("Impossible de lancer le jeu")
+                this.showNotification("Impossible de lancer le jeu")
                 event.sender.send("close", 1)
                 logger.error('Unable to launch the game')
                 logger.error(err)
             })
         }).catch(err => {
-            showNotification("Impossible d'intaller Java pour votre configuration")
+            this.showNotification("Impossible d'intaller Java pour votre configuration")
             event.sender.send("close", 1)
             logger.warn("Unable to install java")
             logger.warn(err)
@@ -132,7 +137,10 @@ class Minecraft {
                 let folder = join(process.env.LOCALAPPDATA, "altarik-launcher", "data")
                 if(!fs.existsSync(folder))
                     fs.mkdirSync(folder)
-                fs.writeFileSync(join(folder, "launcher.json"), JSON.stringify(o.data))
+                let file = join(folder, "launcher.json")
+                if(fs.existsSync(file))
+                    fs.rmSync(file)
+                fs.writeFileSync(file, JSON.stringify(o.data))
                 event.sender.send('modsInformations', this.extractModsInformations(o.data))
             } else {
                 event.sender.send('modsInformations', this.extractModsFromFileSystem())
@@ -145,12 +153,12 @@ class Minecraft {
     }
     
     extractModsFromFileSystem() {
-        content = fs.readFileSync(join(process.env.LOCALAPPDATA, "altarik-launcher/data/launcher.json"))
+        let content = fs.readFileSync(join(process.env.LOCALAPPDATA, "altarik-launcher/data/launcher.json"))
         if(content !== null) {
-            showNotification("Impossible de récupérer certaines informations en ligne", "utilisation des dernières données récupérées")
+            this.showNotification("Impossible de récupérer certaines informations en ligne", "utilisation des dernières données récupérées")
             return this.extractModsInformations(JSON.parse(content))
         } else {
-            showNotification("Impossible de récupérer certaines informations en ligne", "Veuillez réessayez en cliquant sur le bouton")
+            this.showNotification("Impossible de récupérer certaines informations en ligne", "Veuillez réessayez en cliquant sur le bouton")
             logger.error("Unable to get chapters informations from server or filesystem")
             return null
         }
@@ -215,9 +223,9 @@ class Minecraft {
     
     downloadMods(link, path) {
         return new Promise((resolve, reject) => {
-            axios.get(link, {
-                responseType: "stream"
-            }).then(res => {
+            if(!navigator.onLine)
+                reject("offline")
+            axios.get(link, {responseType: "stream"}).then(res => {
                 if(res.status === 200) {
                     if(fs.existsSync(path))
                         fs.rmSync(path)
@@ -305,6 +313,7 @@ class Minecraft {
     }
 
     invalidateData(event) {
+        logger.info("invalidate game data...")
         const assets = join(this.minecraftpath, 'assets')
         const librairies = join(this.minecraftpath,'libraries')
         const natives = join(this.minecraftpath, 'natives')
@@ -314,6 +323,7 @@ class Minecraft {
             fs.rmdirSync(librairies, { recursive: true })
         if(fs.existsSync(natives))
             fs.rmdirSync(natives, { recursive: true })
+        logger.info("Game data invalidated")
         event.sender.send("invalidated")
     }
 }