Improved update check fail case

src/electron/ipc/UpdateHandler.ipc.ts

@@ -14,7 +14,15 @@ let updateAvailable = false
 /**
  * Checks for updates when the program is launched.
  */
-class UpdateChecker {
+class UpdateChecker implements IPCEmitHandler<'retry-update'> {
+  event: 'retry-update' = 'retry-update'
+
+  /**
+   * Check for an update.
+   */
+  handler() {
+    this.checkForUpdates()
+  }
 
   constructor() {
     autoUpdater.autoDownload = false
@@ -23,11 +31,15 @@ class UpdateChecker {
   }
 
   checkForUpdates() {
-    autoUpdater.checkForUpdates()
+    autoUpdater.checkForUpdates().catch(reason => {
+      updateAvailable = null
+      emitIPCEvent('update-error', reason)
+    })
   }
 
   private registerUpdaterListeners() {
     autoUpdater.on('error', (err: Error) => {
+      updateAvailable = null
       emitIPCEvent('update-error', err)
     })
 
@@ -35,6 +47,11 @@ class UpdateChecker {
       updateAvailable = true
       emitIPCEvent('update-available', info)
     })
+
+    autoUpdater.on('update-not-available', (info: UpdateInfo) => {
+      updateAvailable = false
+      emitIPCEvent('update-available', null)
+    })
   }
 }
 

src/electron/shared/IPCHandler.ts

@@ -9,7 +9,7 @@ import { Settings } from './Settings'
 import { batchSongDetailsHandler } from '../ipc/browse/BatchSongDetailsHandler.ipc'
 import { getSettingsHandler, setSettingsHandler } from '../ipc/SettingsHandler.ipc'
 import { googleLoginHandler, getAuthStatusHandler, googleLogoutHandler } from '../ipc/google/GoogleLoginHandler.ipc'
-import { UpdateProgress, getCurrentVersionHandler, downloadUpdateHandler, quitAndInstallHandler, getUpdateAvailableHandler } from '../ipc/UpdateHandler.ipc'
+import { updateChecker, UpdateProgress, getCurrentVersionHandler, downloadUpdateHandler, quitAndInstallHandler, getUpdateAvailableHandler } from '../ipc/UpdateHandler.ipc'
 import { UpdateInfo } from 'electron-updater'
 import { openURLHandler } from '../ipc/OpenURLHandler.ipc'
 
@@ -96,6 +96,7 @@ export function getIPCEmitHandlers(): IPCEmitHandler<keyof IPCEmitEvents>[] {
     downloadHandler,
     setSettingsHandler,
     downloadUpdateHandler,
+    updateChecker,
     quitAndInstallHandler,
     openURLHandler
   ]
@@ -115,6 +116,7 @@ export type IPCEmitEvents = {
   'update-progress': UpdateProgress
   'update-downloaded': undefined
   'download-update': undefined
+  'retry-update': undefined
   'quit-and-install': undefined
   'open-url': string
 }