OS X installation support

electron.js

@@ -310,7 +310,7 @@ ipcMain.on(Constants.IPC_Detect_Mounts, (event, data) => {
 
   const setImage = (locations) => {
     if (os.platform() === 'win32' || os.platform() === 'linux') {
-      let driveInUse = false;
+      let driveInUse;
       for (const provider of Constants.PROVIDER_LIST) {
         driveInUse = locations[provider].length > 0;
         if (driveInUse)
@@ -504,16 +504,45 @@ ipcMain.on(Constants.IPC_Install_Dependency, (event, data) => {
 });
 
 ipcMain.on(Constants.IPC_Install_Upgrade, (event, data) => {
-  helpers
-    .executeAsync(data.Source)
-    .then(()=> {
-      mainWindow.close();
-    })
-    .catch(error => {
-      standardIPCReply(event, Constants.IPC_Install_Upgrade_Reply, {
-        Source: data.Source,
-      }, error);
-    });
+  if (os.platform() === 'win32') {
+    helpers
+      .executeAsync(data.Source)
+      .then(() => {
+        closeApplication();
+      })
+      .catch(error => {
+        standardIPCReply(event, Constants.IPC_Install_Upgrade_Reply, {
+          Source: data.Source,
+        }, error);
+      });
+  } else if (data.Source.toLocaleLowerCase().endsWith('.dmg')) {
+    helpers
+      .executeAsync('hdiutil', ['attach', data.Source])
+      .then(() => {
+        closeApplication();
+      })
+      .catch(error => {
+        standardIPCReply(event, Constants.IPC_Install_Upgrade_Reply, {
+          Source: data.Source,
+        }, error);
+      });
+  } else if (data.Source.toLocaleLowerCase().endsWith('.appimage')) {
+    // TODO Generate and execute script with delay
+    /*helpers
+      .executeAsync(data.Source)
+      .then(() => {
+        closeApplication();
+      })
+      .catch(error => {
+        standardIPCReply(event, Constants.IPC_Install_Upgrade_Reply, {
+          Source: data.Source,
+        }, error);
+      });*/
+  } else {
+    standardIPCReply(event, Constants.IPC_Install_Upgrade_Reply, {
+      Source: data.Source,
+    }, Error('Unsupported upgrade: ' + data.Source));
+  }
 });
 
 ipcMain.on(Constants.IPC_Mount_Drive, (event, data) => {