2.0.0

Update README.md: Fix broken download links

README.md

@@ -7,8 +7,8 @@ Interested in Electron? Join as at [CovalenceConf](http://covalenceconf.com) in
 ## Downloads
 |  | Windows | macOS | Linux |
 |---------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| Standalone Download | 📦[Standalone, 32-bit](https://github.com/felixrieseberg/windows95/releases/download/v1.3.0/windows95-win32-1.3.0-standalone-ia32.zip) <br /> 📦[Standalone, 64-bit](https://github.com/felixrieseberg/windows95/releases/download/v1.3.0/windows95-win32-1.3.0-standalone-x64.zip)  | 📦[Standalone](https://github.com/felixrieseberg/windows95/releases/download/v1.3.0/windows95-macos-1.3.0.zip) |  |
-| Installer | 💽[Setup, 64-bit](https://github.com/felixrieseberg/windows95/releases/download/v1.3.0/windows95-win32-1.3.0-setup-x64.exe) <br /> 💽[Setup, 32-bit](https://github.com/felixrieseberg/windows95/releases/download/v1.3.0/windows95-win32-1.3.0-setup-ia32.exe)  |  |  💽[deb, 64-bit](https://github.com/felixrieseberg/windows95/releases/download/v1.3.0/windows95-linux_1.3.0_amd64.deb) <br /> 💽[rpm, 64-bit](https://github.com/felixrieseberg/windows95/releases/download/v1.3.0/windows95-linux-1.3.0.x86_64.rpm) |
+| Standalone Download | 📦[Standalone, 32-bit](https://github.com/felixrieseberg/windows95/releases/download/v1.4.0/windows95-1.4.0-win32-standalone-ia32.zip) <br /> 📦[Standalone, 64-bit](https://github.com/felixrieseberg/windows95/releases/download/v1.4.0/windows95-1.4.0-win32-standalone-x64.zip)  | 📦[Standalone](https://github.com/felixrieseberg/windows95/releases/download/v1.4.0/windows95-macos-1.4.0.zip) |  |
+| Installer | 💽[Setup, 64-bit](https://github.com/felixrieseberg/windows95/releases/download/v1.4.0/windows95-1.4.0-setup-win32-x64.exe) <br /> 💽[Setup, 32-bit](https://github.com/felixrieseberg/windows95/releases/download/v1.4.0/windows95-1.4.0-setup-win32-ia32.exe)  |  |  💽[deb, 64-bit](https://github.com/felixrieseberg/windows95/releases/download/v1.4.0/windows95-linux-1.4.0_amd64.deb) <br /> 💽[rpm, 64-bit](https://github.com/felixrieseberg/windows95/releases/download/v1.4.0/windows95-linux-1.4.0.x86_64.rpm) |
 
 ![Screenshot](https://user-images.githubusercontent.com/1426799/44532591-4ceb3680-a6a8-11e8-8c2c-bc29f3bfdef7.png)
 

forge.config.js

@@ -21,16 +21,18 @@ module.exports = {
     {
       name: '@electron-forge/maker-squirrel',
       platforms: ['win32'],
-      config: {
-        name: 'windows95',
-        authors: 'Felix Rieseberg',
-        exe: 'windows95.exe',
-        noMsi: true,
-        remoteReleases: '',
-        setupExe: `windows95-${package.version}-setup-${process.arch}.exe`,
-        setupIcon: path.resolve(__dirname, 'assets', 'icon.ico'),
-        certificateFile: process.env.WINDOWS_CERTIFICATE_FILE,
-        certificatePassword: process.env.WINDOWS_CERTIFICATE_PASSWORD
+      config: (arch) => {
+        return {
+          name: 'windows95',
+          authors: 'Felix Rieseberg',
+          exe: 'windows95.exe',
+          noMsi: true,
+          remoteReleases: '',
+          setupExe: `windows95-${package.version}-setup-${arch}.exe`,
+          setupIcon: path.resolve(__dirname, 'assets', 'icon.ico'),
+          certificateFile: process.env.WINDOWS_CERTIFICATE_FILE,
+          certificatePassword: process.env.WINDOWS_CERTIFICATE_PASSWORD
+        }
       }
     },
     {

package.json

@@ -1,7 +1,7 @@
 {
   "name": "windows95",
   "productName": "windows95",
-  "version": "1.4.0",
+  "version": "2.0.0",
   "description": "Windows 95, in an app. I'm sorry.",
   "main": "src/index.js",
   "scripts": {
@@ -28,19 +28,19 @@
     ]
   },
   "dependencies": {
-    "electron-default-menu": "^1.0.1",
     "electron-squirrel-startup": "^1.0.0",
-    "fs-extra": "^7.0.0",
+    "fs-extra": "^7.0.1",
     "update-electron-app": "^1.3.0"
   },
   "devDependencies": {
-    "@electron-forge/cli": "^6.0.0-beta.30",
-    "@electron-forge/maker-deb": "^6.0.0-beta.30",
-    "@electron-forge/maker-flatpak": "^6.0.0-beta.30",
-    "@electron-forge/maker-rpm": "^6.0.0-beta.30",
-    "@electron-forge/maker-squirrel": "^6.0.0-beta.30",
-    "@electron-forge/maker-zip": "^6.0.0-beta.30",
-    "electron": "3.0.13",
-    "standard": "^11.0.1"
+    "@electron-forge/cli": "^6.0.0-beta.32",
+    "@electron-forge/maker-deb": "^6.0.0-beta.32",
+    "@electron-forge/maker-flatpak": "^6.0.0-beta.32",
+    "@electron-forge/maker-rpm": "^6.0.0-beta.32",
+    "@electron-forge/maker-squirrel": "^6.0.0-beta.32",
+    "@electron-forge/maker-zip": "^6.0.0-beta.32",
+    "electron": "4.0.4",
+    "node-abi": "^2.6.0",
+    "standard": "^12.0.1"
   }
 }

src/constants.js

@@ -0,0 +1,24 @@
+const { remote, app } = require('electron')
+const path = require('path')
+
+const _app = app || remote.app
+
+const CONSTANTS = {
+  IMAGE_PATH: path.join(__dirname, 'images/windows95.img'),
+  IMAGE_DEFAULT_SIZE: 1073741824, // 1GB
+  DEFAULT_STATE_PATH: path.join(__dirname, 'images/default-state.bin'),
+  STATE_PATH: path.join(_app.getPath('userData'), 'state-v2.bin')
+}
+
+const IPC_COMMANDS = {
+  TOGGLE_INFO: 'TOGGLE_INFO',
+  MACHINE_RESTART: 'MACHINE_RESTART',
+  MACHINE_RESET: 'MACHINE_RESET',
+  MACHINE_CTRL_ALT_DEL: 'MACHINE_CTRL_ALT_DEL',
+  SHOW_DISK_IMAGE: 'SHOW_DISK_IMAGE'
+}
+
+module.exports = {
+  CONSTANTS,
+  IPC_COMMANDS
+}

src/index.js

@@ -1,7 +1,6 @@
 const { app, BrowserWindow } = require('electron')
 const path = require('path')
 
-const { clearCaches } = require('./cache')
 const { createMenu } = require('./menu')
 const { setupProtocol } = require('./es6')
 
@@ -21,8 +20,8 @@ let mainWindow
 const createWindow = () => {
   // Create the browser window.
   mainWindow = new BrowserWindow({
-    width: 1280,
-    height: 800,
+    width: 1024,
+    height: 768,
     useContentSize: true,
     webPreferences: {
       nodeIntegration: false,
@@ -40,7 +39,6 @@ const createWindow = () => {
 app.on('ready', async () => {
   await setupProtocol()
   await createMenu()
-  await clearCaches()
 
   createWindow()
 })

src/menu.js

@@ -1,8 +1,10 @@
 const { app, shell, Menu, BrowserWindow } = require('electron')
-const defaultMenu = require('electron-default-menu')
+
+const { clearCaches } = require('./cache')
+const { IPC_COMMANDS } = require('./constants')
 
 const LINKS = {
-  homepage: 'https://www.felixrieseberg.com',
+  homepage: 'https://www.twitter.com/felixrieseberg',
   repo: 'https://github.com/felixrieseberg/windows95',
   credits: 'https://github.com/felixrieseberg/windows95/blob/master/CREDITS.md',
   help: 'https://github.com/felixrieseberg/windows95/blob/master/HELP.md'
@@ -17,74 +19,162 @@ function send (cmd) {
 }
 
 async function createMenu () {
-  const menu = defaultMenu(app, shell)
-    .map((item) => {
-      if (item.label === 'View') {
-        item.submenu = item.submenu.filter((subItem) => {
-          return subItem.label !== 'Reload'
-        })
-      }
-
-      if (item.label === 'Help') {
-        item.submenu = [
-          {
-            label: 'Author',
-            click() {
-              shell.openExternal(LINKS.homepage)
-            },
-          },
-          {
-            label: 'Learn More',
-            click() {
-              shell.openExternal(LINKS.repo)
-            },
-          },
-          {
-            type: 'separator'
-          },
-          {
-            label: 'Help',
-            click() {
-              shell.openExternal(LINKS.help)
-            }
-          },
-          {
-            label: 'Credits',
-            click() {
-              shell.openExternal(LINKS.credits)
-            }
+  const template = [
+    {
+      label: 'View',
+      submenu: [
+        {
+          label: 'Toggle Full Screen',
+          accelerator: (function () {
+            if (process.platform === 'darwin') { return 'Ctrl+Command+F' } else { return 'F11' }
+          })(),
+          click: function (_item, focusedWindow) {
+            if (focusedWindow) { focusedWindow.setFullScreen(!focusedWindow.isFullScreen()) }
           }
-        ]
-      }
+        },
+        {
+          label: 'Toggle Developer Tools',
+          accelerator: (function () {
+            if (process.platform === 'darwin') { return 'Alt+Command+I' } else { return 'Ctrl+Shift+I' }
+          })(),
+          click: function (_item, focusedWindow) {
+            if (focusedWindow) { focusedWindow.toggleDevTools() }
+          }
+        },
+        {
+          type: 'separator'
+        },
+        {
+          label: 'Toggle Emulator Info',
+          click: () => send(IPC_COMMANDS.TOGGLE_INFO)
+        }
+      ]
+    },
+    {
+      label: 'Window',
+      role: 'window',
+      submenu: [
+        {
+          label: 'Minimize',
+          accelerator: 'CmdOrCtrl+M',
+          role: 'minimize'
+        },
+        {
+          label: 'Close',
+          accelerator: 'CmdOrCtrl+W',
+          role: 'close'
+        }
+      ]
+    },
+    {
+      label: 'Machine',
+      submenu: [
+        {
+          label: 'Send Ctrl+Alt+Del',
+          click: () => send(IPC_COMMANDS.MACHINE_CTRL_ALT_DEL)
+        },
+        {
+          label: 'Restart',
+          click: () => send(IPC_COMMANDS.MACHINE_RESTART)
+        },
+        {
+          label: 'Reset',
+          click: () => send(IPC_COMMANDS.MACHINE_RESET)
+        },
+        {
+          type: 'separator'
+        },
+        {
+          label: 'Go to Disk Image',
+          click: () => send(IPC_COMMANDS.SHOW_DISK_IMAGE)
+        }
+      ]
+    },
+    {
+      label: 'Help',
+      role: 'help',
+      submenu: [
+        {
+          label: 'Author',
+          click: () => shell.openExternal(LINKS.homepage)
+        },
+        {
+          label: 'windows95 on GitHub',
+          click: () => shell.openExternal(LINKS.repo)
+        },
+        {
+          label: 'Help',
+          click: () => shell.openExternal(LINKS.help)
+        },
+        {
+          type: 'separator'
+        },
+        {
+          label: 'Troubleshooting',
+          submenu: [
+            {
+              label: 'Clear Cache and Restart',
+              async click () {
+                await clearCaches()
 
-      return item
-    })
-    .filter((item) => {
-      return item.label !== 'Edit'
+                app.relaunch()
+                app.quit()
+              }
+            }
+          ]
+        }
+      ]
+    }
+  ]
+
+  if (process.platform === 'darwin') {
+    template.unshift({
+      label: 'windows95',
+      submenu: [
+        {
+          label: 'About windows95',
+          role: 'about'
+        },
+        {
+          type: 'separator'
+        },
+        {
+          label: 'Services',
+          role: 'services',
+          submenu: []
+        },
+        {
+          type: 'separator'
+        },
+        {
+          label: 'Hide windows95',
+          accelerator: 'Command+H',
+          role: 'hide'
+        },
+        {
+          label: 'Hide Others',
+          accelerator: 'Command+Shift+H',
+          role: 'hideothers'
+        },
+        {
+          label: 'Show All',
+          role: 'unhide'
+        },
+        {
+          type: 'separator'
+        },
+        {
+          label: 'Quit',
+          accelerator: 'Command+Q',
+          click () {
+            app.quit()
+          }
+        }
+      ]
     })
+  }
 
-  menu.splice(1, 0, {
-    label: 'Machine',
-    submenu: [
-      {
-        label: 'Send Ctrl+Alt+Del',
-        click: () => send('ctrlaltdel')
-      },
-      {
-        label: 'Restart',
-        click: () => send('restart')
-      },
-      {
-        type: 'separator'
-      },
-      {
-        label: 'Go to Disk Image',
-        click: () => send('disk-image')
-      }
-    ]
-  })
-
-  Menu.setApplicationMenu(Menu.buildFromTemplate(menu))
+  Menu.setApplicationMenu(Menu.buildFromTemplate(template))
 }
 
 module.exports = {

src/preload.js

@@ -1,45 +1,42 @@
 const { remote, shell, ipcRenderer } = require('electron')
 const path = require('path')
+const EventEmitter = require('events')
 
-const { STATE_PATH, resetState, restoreState, saveState } = require('./state')
+const { resetState, restoreState, saveState } = require('./state')
+const { getDiskImageSize } = require('./utils/disk-image-size')
+const { IPC_COMMANDS, CONSTANTS } = require('./constants')
 
-window.windows95 = {
-  STATE_PATH,
-  restoreState,
-  resetState,
-  saveState,
+class Windows95 extends EventEmitter {
+  constructor () {
+    super()
+
+    // Constants
+    this.CONSTANTS = CONSTANTS
+    this.IPC_COMMANDS = IPC_COMMANDS
+
+    // Methods
+    this.getDiskImageSize = getDiskImageSize
+    this.restoreState = restoreState
+    this.resetState = resetState
+    this.saveState = saveState
+
+    Object.keys(IPC_COMMANDS).forEach((command) => {
+      ipcRenderer.on(command, (...args) => {
+        this.emit(command, args)
+      })
+    })
+  }
 
   showDiskImage () {
     const imagePath = path.join(__dirname, 'images/windows95.img')
       .replace('app.asar', 'app.asar.unpacked')
 
     shell.showItemInFolder(imagePath)
-  },
+  }
 
-  quit: () => remote.app.quit()
+  quit () {
+    remote.app.quit()
+  }
 }
 
-ipcRenderer.on('ctrlaltdel', () => {
-  if (!window.emulator || !window.emulator.is_running) return
-
-  window.emulator.keyboard_send_scancodes([
-    0x1D, // ctrl
-    0x38, // alt
-    0x53, // delete
-
-    // break codes
-    0x1D | 0x80,
-    0x38 | 0x80,
-    0x53 | 0x80
-  ])
-})
-
-ipcRenderer.on('restart', () => {
-  if (!window.emulator || !window.emulator.is_running) return
-
-  window.emulator.restart()
-})
-
-ipcRenderer.on('disk-image', () => {
-  windows95.showDiskImage()
-})
+window.windows95 = new Windows95()

src/renderer/app-state.js

@@ -1,8 +1,9 @@
 export function setupState () {
   window.appState = {
+    isResetting: false,
+    isQuitting: false,
     cursorCaptured: false,
     floppyFile: null,
-    bootFresh: false,
-    infoInterval: null
+    bootFresh: false
   }
 }

src/renderer/buttons.js

@@ -13,7 +13,7 @@ export function setupButtons (start) {
   $('#discard-state').addEventListener('click', () => {
     window.appState.bootFresh = true
 
-    start('win95')
+    start()
   })
 
   // Floppy

src/renderer/index.html

@@ -14,7 +14,7 @@
   <div id="status">
     Disk: <span id="disk-status">Idle</span>
     | CPU Speed: <span id="cpu-status">0</span>
-    | <a onclick="document.querySelector('#status').style.display='none'">Hide</a>
+    | <a href="#" id="toggle-status">Hide</a>
   </div>
   <div id="buttons">
     <div id="start-buttons">

src/renderer/info.js

@@ -1,28 +1,63 @@
 const $ = document.querySelector.bind(document)
+const status = $('#status')
+const diskStatus = $('#disk-status')
+const cpuStatus = $('#cpu-status')
+const toggleStatus = $('#toggle-status')
 
-export function setupInfo () {
-  const diskStatus = $('#disk-status')
-  const cpuStatus = $('#cpu-status')
-  let lastCounter = 0
-  let lastTick = 0
+let lastCounter = 0
+let lastTick = 0
+let infoInterval = null
 
-  window.emulator.add_listener('ide-read-start', () => {
-    diskStatus.innerHTML = 'Read'
-  })
+const onIDEReadStart = () => {
+  diskStatus.innerHTML = 'Read'
+}
 
-  window.emulator.add_listener('ide-read-end', () => {
-    diskStatus.innerHTML = 'Idle'
-  })
+const onIDEReadWriteEnd = () => {
+  diskStatus.innerHTML = 'Idle'
+}
 
-  window.emulator.add_listener('ide-write-end', () => {
-    diskStatus.innerHTML = 'Idle'
-  })
+toggleStatus.onclick = toggleInfo
 
-  window.emulator.add_listener('screen-set-size-graphical', (...args) => {
-    console.log(...args)
-  })
+/**
+ * Toggle the information display
+ */
+export function toggleInfo () {
+  if (status.style.display !== 'none') {
+    disableInfo()
+  } else {
+    enableInfo()
+  }
+}
 
-  setInterval(() => {
+/**
+ * Start information gathering, but only if the panel is visible
+ */
+export function startInfoMaybe () {
+  if (status.style.display !== 'none') {
+    enableInfo()
+  }
+}
+
+/**
+ * Enable the gathering of information (and hide the little information tab)
+ */
+export function enableInfo () {
+  // Show the info thingy
+  status.style.display = 'block'
+
+  // We can only do the rest with an emulator
+  if (!window.emulator.add_listener) {
+    return
+  }
+
+  // Set listeners
+  window.emulator.add_listener('ide-read-start', onIDEReadStart)
+  window.emulator.add_listener('ide-read-end', onIDEReadWriteEnd)
+  window.emulator.add_listener('ide-write-end', onIDEReadWriteEnd)
+  window.emulator.add_listener('screen-set-size-graphical', console.log)
+
+  // Set an interval
+  infoInterval = setInterval(() => {
     const now = Date.now()
     const instructionCounter = window.emulator.get_instruction_counter()
     const ips = instructionCounter - lastCounter
@@ -34,3 +69,26 @@ export function setupInfo () {
     cpuStatus.innerHTML = Math.round(ips / deltaTime)
   }, 500)
 }
+
+/**
+ * Disable the gathering of information (and hide the little information tab)
+ */
+export function disableInfo () {
+  // Hide the info thingy
+  status.style.display = 'none'
+
+  // Clear the interval
+  clearInterval(infoInterval)
+  infoInterval = null
+
+  // We can only do the rest with an emulator
+  if (!window.emulator.remove_listener) {
+    return
+  }
+
+  // Unset the listeners
+  window.emulator.remove_listener('ide-read-start', onIDEReadStart)
+  window.emulator.remove_listener('ide-read-end', onIDEReadWriteEnd)
+  window.emulator.remove_listener('ide-write-end', onIDEReadWriteEnd)
+  window.emulator.remove_listener('screen-set-size-graphical', console.log)
+}

src/renderer/ipc.js

@@ -0,0 +1,44 @@
+import { toggleInfo } from 'es6://info.js'
+
+export function setupIpcListeners (start) {
+  const { windows95 } = window
+
+  windows95.addListener(windows95.IPC_COMMANDS.TOGGLE_INFO, () => {
+    toggleInfo()
+  })
+
+  windows95.addListener(windows95.IPC_COMMANDS.MACHINE_RESTART, () => {
+    console.log(`Restarting machine`)
+
+    if (!window.emulator || !window.emulator.is_running) return
+
+    window.emulator.restart()
+  })
+
+  windows95.addListener(windows95.IPC_COMMANDS.MACHINE_RESET, () => {
+    console.log(`Resetting machine`)
+
+    window.appState.isResetting = true
+    document.location.hash = `#AUTO_START`
+    document.location.reload()
+  })
+
+  windows95.addListener(windows95.IPC_COMMANDS.MACHINE_CTRL_ALT_DEL, () => {
+    if (!window.emulator || !window.emulator.is_running) return
+
+    window.emulator.keyboard_send_scancodes([
+      0x1D, // ctrl
+      0x38, // alt
+      0x53, // delete
+
+      // break codes
+      0x1D | 0x80,
+      0x38 | 0x80,
+      0x53 | 0x80
+    ])
+  })
+
+  windows95.addListener(windows95.IPC_COMMANDS.SHOW_DISK_IMAGE, () => {
+    windows95.showDiskImage()
+  })
+}

src/renderer/listeners.js

@@ -9,6 +9,7 @@ export function setupCloseListener () {
 
   window.onbeforeunload = (event) => {
     if (window.appState.isQuitting) return
+    if (window.appState.isResetting) return
 
     handleClose()
     event.preventDefault()
@@ -22,6 +23,7 @@ export function setupEscListener () {
     if (evt.keyCode === 27) {
       if (window.appState.cursorCaptured) {
         window.appState.cursorCaptured = false
+        window.emulator.mouse_set_status(false)
         document.exitPointerLock()
       } else {
         window.appState.cursorCaptured = true
@@ -31,11 +33,15 @@ export function setupEscListener () {
   }
 }
 
-export function setupClickListener () {
-  document.addEventListener('click', () => {
-    if (!window.appState.cursorCaptured) {
-      window.appState.cursorCaptured = true
-      window.emulator.lock_mouse()
-    }
-  })
+function onDocumentClick () {
+  if (!window.appState.cursorCaptured) {
+    window.appState.cursorCaptured = true
+    window.emulator.mouse_set_status(true)
+    window.emulator.lock_mouse()
+  }
+}
+
+export function setupClickListener () {
+  document.removeEventListener('click', onDocumentClick)
+  document.addEventListener('click', onDocumentClick)
 }

src/renderer/renderer.js

@@ -1,7 +1,9 @@
+/* We're using modern esm imports here */
 import { setupState } from 'es6://app-state.js'
 import { setupClickListener, setupEscListener, setupCloseListener } from 'es6://listeners.js'
 import { toggleButtons, setupButtons } from 'es6://buttons.js'
-import { setupInfo } from 'es6://info.js'
+import { startInfoMaybe } from 'es6://info.js'
+import { setupIpcListeners } from 'es6://ipc.js'
 
 setupState()
 
@@ -9,9 +11,10 @@ setupState()
  * The main method executing the VM.
  */
 async function main () {
-  // New v86 instance
-  window.emulator = new V86Starter({
-    memory_size: 64 * 1024 * 1024,
+  const imageSize = await window.windows95.getDiskImageSize()
+  const options = {
+    memory_size: 128 * 1024 * 1024,
+    video_memory_size: 32 * 1024 * 1024,
     screen_container: document.getElementById('emulator'),
     bios: {
       url: './bios/seabios.bin'
@@ -22,21 +25,19 @@ async function main () {
     hda: {
       url: '../images/windows95.img',
       async: true,
-      size: 242049024
+      size: imageSize
     },
     fda: {
       buffer: window.appState.floppyFile || undefined
     },
     boot_order: 0x132
-  })
-
-  // High DPI support
-  if (navigator.userAgent.includes('Windows')) {
-    const scale = window.devicePixelRatio
-
-    window.emulator.screen_adapter.set_scale(scale, scale)
   }
 
+  console.log(`Starting emulator with options`, options)
+
+  // New v86 instance
+  window.emulator = new V86Starter(options)
+
   // Restore state. We can't do this right away
   // and randomly chose 500ms as the appropriate
   // wait time (lol)
@@ -45,7 +46,7 @@ async function main () {
       windows95.restoreState()
     }
 
-    setupInfo()
+    startInfoMaybe()
 
     window.appState.cursorCaptured = true
     window.emulator.lock_mouse()
@@ -61,6 +62,11 @@ function start () {
   main()
 }
 
+setupIpcListeners(start)
 setupEscListener()
 setupCloseListener()
 setupButtons(start)
+
+if (document.location.hash.includes('AUTO_START')) {
+  start()
+}

src/state.js

@@ -1,9 +1,6 @@
 const fs = require('fs-extra')
-const path = require('path')
-const { remote } = require('electron')
 
-const DEFAULT_PATH = path.join(__dirname, 'images/default-state.bin')
-const STATE_PATH = path.join(remote.app.getPath('userData'), 'state.bin')
+const { CONSTANTS } = require('./constants')
 
 /**
  * Returns the current machine's state - either what
@@ -12,11 +9,13 @@ const STATE_PATH = path.join(remote.app.getPath('userData'), 'state.bin')
  * @returns {ArrayBuffer}
  */
 function getState () {
-  const statePath = fs.existsSync(STATE_PATH)
-    ? STATE_PATH
-    : DEFAULT_PATH
+  const statePath = fs.existsSync(CONSTANTS.STATE_PATH)
+    ? CONSTANTS.STATE_PATH
+    : CONSTANTS.DEFAULT_STATE_PATH
 
-  return fs.readFileSync(statePath).buffer
+  if (fs.existsSync(statePath)) {
+    return fs.readFileSync(statePath).buffer
+  }
 }
 
 /**
@@ -25,8 +24,8 @@ function getState () {
  * @returns {Promise<void>}
  */
 async function resetState () {
-  if (fs.existsSync(STATE_PATH)) {
-    return fs.remove(STATE_PATH)
+  if (fs.existsSync(CONSTANTS.STATE_PATH)) {
+    return fs.remove(CONSTANTS.STATE_PATH)
   }
 }
 
@@ -43,13 +42,13 @@ async function saveState () {
 
     window.emulator.save_state(async (error, newState) => {
       if (error) {
-        console.log(error)
+        console.warn(`State: Could not save state`, error)
         return
       }
 
-      await fs.outputFile(STATE_PATH, Buffer.from(newState))
+      await fs.outputFile(CONSTANTS.STATE_PATH, Buffer.from(newState))
 
-      console.log(`Saved state to ${STATE_PATH}`)
+      console.log(`State: Saved state to ${CONSTANTS.STATE_PATH}`)
 
       resolve()
     })
@@ -60,15 +59,21 @@ async function saveState () {
  * Restores the VM's state.
  */
 function restoreState () {
+  const state = getState()
+
+  // Nothing to do with if we don't have a state
+  if (!state) {
+    console.log(`State: No state present, not restoring.`)
+  }
+
   try {
-    window.emulator.restore_state(getState())
+    window.emulator.restore_state(state)
   } catch (error) {
-    console.log(`Could not read state file. Maybe none exists?`, error)
+    console.log(`State: Could not read state file. Maybe none exists?`, error)
   }
 }
 
 module.exports = {
-  STATE_PATH,
   saveState,
   restoreState,
   resetState,

src/utils/disk-image-size.js

@@ -0,0 +1,26 @@
+const fs = require('fs-extra')
+
+const { CONSTANTS } = require('../constants')
+
+/**
+ * Get the size of the disk image
+ *
+ * @returns {number}
+ */
+async function getDiskImageSize () {
+  try {
+    const stats = await fs.stat(CONSTANTS.IMAGE_PATH)
+
+    if (stats) {
+      return stats.size
+    }
+  } catch (error) {
+    console.warn(`Could not determine image size`, error)
+  }
+
+  return CONSTANTS.IMAGE_DEFAULT_SIZE
+}
+
+module.exports = {
+  getDiskImageSize
+}