Improve waiting for things to end in (un)installer

MediaBrowser.Installer/MainWindow.xaml.cs

@@ -80,6 +80,20 @@ namespace MediaBrowser.Installer
             PackageClass = (PackageVersionClass) Enum.Parse(typeof (PackageVersionClass), ConfigurationManager.AppSettings["class"] ?? "Release");
             var cmdArgs = Environment.GetCommandLineArgs();
             Archive = cmdArgs.Length > 1 ? cmdArgs[1] : null;
+            var callerId = cmdArgs.Length > 2 ? cmdArgs[2] : null;
+            if (callerId != null)
+            {
+                // Wait for our caller to exit
+                try
+                {
+                    var process = Process.GetProcessById(Convert.ToInt32(callerId));
+                    process.WaitForExit();
+                }
+                catch (ArgumentException)
+                {
+                    // wasn't running
+                }
+            }
 
             switch (product.ToLower())
             {
@@ -108,13 +122,15 @@ namespace MediaBrowser.Installer
         /// <returns></returns>
         protected async Task DoInstall(string archive)
         {
-            lblStatus.Text = string.Format("Downloading {0}...", FriendlyName);
+            lblStatus.Text = string.Format("Installing {0}...", FriendlyName);
 
             // Determine Package version
             var version = await GetPackageVersion();
 
             // Now try and shut down the server if that is what we are installing and it is running
-            if (PackageName == "MBServer" && Process.GetProcessesByName("mediabrowser.serverapplication").Length != 0)
+            var procs = Process.GetProcessesByName("mediabrowser.serverapplication");
+            var server = procs.Length > 0 ? procs[0] : null;
+            if (PackageName == "MBServer" && server != null)
             {
                 lblStatus.Text = "Shutting Down Media Browser Server...";
                 using (var client = new WebClient())
@@ -122,6 +138,14 @@ namespace MediaBrowser.Installer
                     try
                     {
                         client.UploadString("http://localhost:8096/mediabrowser/System/Shutdown", "");
+                        try
+                        {
+                            server.WaitForExit();
+                        }
+                        catch (ArgumentException)
+                        {
+                            // already gone
+                        }
                     }
                     catch (WebException e)
                     {
@@ -278,7 +302,17 @@ namespace MediaBrowser.Installer
         {
             // Delete old content of system
             var systemDir = Path.Combine(RootPath, "system");
-            if (Directory.Exists(systemDir)) Directory.Delete(systemDir, true);
+            if (Directory.Exists(systemDir))
+            {
+                try
+                {
+                    Directory.Delete(systemDir, true);
+                }
+                catch
+                {
+                    // we tried...
+                }
+            }
 
             // And extract
             using (var fileStream = File.OpenRead(archive))

MediaBrowser.Uninstaller.Execute/MainWindow.xaml.cs

@@ -18,10 +18,28 @@ namespace MediaBrowser.Uninstaller.Execute
 
         public MainWindow()
         {
-            Thread.Sleep(800); // be sure our caller is shut down
 
             var args = Environment.GetCommandLineArgs();
             var product = args.Length > 1 ? args[1] : "server";
+            var callerId = args.Length > 2 ? args[2] : null;
+            if (callerId != null)
+            {
+                // Wait for our caller to exit
+                try
+                {
+                    var process = Process.GetProcessById(Convert.ToInt32(callerId));
+                    process.WaitForExit();
+                }
+                catch (ArgumentException)
+                {
+                    // wasn't running
+                }
+            }
+            else
+            {
+                Thread.Sleep(1000); // crude method
+            }
+
             InitializeComponent();
 
 
@@ -79,7 +97,9 @@ namespace MediaBrowser.Uninstaller.Execute
             if (Product == "Server")
             {
                 RemoveShortcut(Path.Combine(startMenu, "MB Dashboard.lnk"));
-                if (Process.GetProcessesByName("mediabrowser.serverapplication").Length != 0)
+                var procs = Process.GetProcessesByName("mediabrowser.serverapplication");
+                var server = procs.Length > 0 ? procs[0] : null;
+                if (server != null)
                 {
                     using (var client = new WebClient())
                     {
@@ -87,6 +107,14 @@ namespace MediaBrowser.Uninstaller.Execute
                         try
                         {
                             client.UploadString("http://localhost:8096/mediabrowser/system/shutdown", "");
+                            try
+                            {
+                                server.WaitForExit();
+                            }
+                            catch (ArgumentException)
+                            {
+                                // already gone
+                            }
                         }
                         catch (WebException ex)
                         {

MediaBrowser.Uninstaller/Program.cs

@@ -24,8 +24,11 @@ namespace MediaBrowser.Uninstaller
                 var sourceDir = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location) ?? "";
                 File.WriteAllBytes(tempExe, File.ReadAllBytes(Path.Combine(sourceDir, "MediaBrowser.Uninstaller.Execute.exe")));
                 File.Copy(Path.Combine(sourceDir, "MediaBrowser.Uninstaller.Execute.exe.config"), tempConfig, true);
+
+                //get our pid to pass to the uninstaller so it can wait for us to exit
+                var pid = Process.GetCurrentProcess().Id;
                 //kick off the copy
-                Process.Start(tempExe, product);
+                Process.Start(tempExe, product + " " + pid);
                 //and shut down
             }
         }