Add scripts for updating windows

scripts/Windows/OS/Install.ps1

@@ -2,13 +2,13 @@
 . "$PSScriptRoot/../Scripts/Prerequisites.ps1";
 
 . "$PSScriptRoot/Manage.ps1";
-. "$PSScriptRoot/Upgrade.ps1";
 . "$PSScriptRoot/User/Install.ps1";
 . "$PSScriptRoot/../Scripts/Choco.ps1";
 . "$PSScriptRoot/../Scripts/Context.ps1";
 . "$PSScriptRoot/../Scripts/Hooks.ps1";
 . "$PSScriptRoot/../Scripts/PowerManagement.ps1";
 . "$PSScriptRoot/../Scripts/SetupConfig.ps1";
+. "$PSScriptRoot/../Scripts/Update.ps1";
 . "$PSScriptRoot/../Software/Firefox/Install.ps1";
 
 <#
@@ -24,15 +24,9 @@ function Start-WindowsInstallation {
     Starts the installation loop.
 #>
 function Start-InstallationLoop {
-    . "$PSScriptRoot/../Scripts/Choco.ps1";
-    . "$PSScriptRoot/../Scripts/Hooks.ps1";
-    . "$PSScriptRoot/../Scripts/PowerManagement.ps1";
-    . "$PSScriptRoot/../Scripts/SetupConfig.ps1";
-
     while (-not (Get-IsFinished)) {
-        if (-not (Get-Stage)) {
+        if ($null -eq (Get-Stage)) {
-            Set-Stage [SetupStage]::Initialize;
+            Set-Stage ([SetupStage]::Initialize);
-            break;
         } elseif ((Get-Stage) -eq ([SetupStage]::Initialize)) {
             if (-not ((Get-Command "choco") -and (Get-Command "refreshenv"))) {
                 Invoke-Hook "Install-Chocolatey" -Fallback {
@@ -53,12 +47,30 @@ function Start-InstallationLoop {
                 return;
             }
 
+            Invoke-Hook "Install-PSModules" -Fallback {
+                Install-Module -AcceptLicense -Force PSWindowsUpdate;
+            };
+
             if (Test-Path $env:PWSH_PATH) {
-                Remove-Item -Recurse $env:PWSH_PATH;
+                attrib "-R" "$env:PWSH_PATH\*" /S /D;
+                Remove-Item -Recurse -Force $env:PWSH_PATH;
+            } else {
+                Set-Stage ([SetupStage]::Install);
             }
         } else {
+            $null = Import-Module PSWindowsUpdate;
+
+            Invoke-Hook "Invoke-WindowsUpdate" -Fallback {
+                Update-WindowsInstallation;
+            };
+
+            if ((Get-WURebootStatus -Silent)) {
+                Restart-Intermediate;
+                return;
+            }
+
             switch (Get-Stage) {
-                $null {
+                ([SetupStage]::Install) {
                 }
                 Default {}
             }
@@ -74,6 +86,7 @@ function Invoke-WindowsInstallation([Context] $context) {
 }
 
 function Start-OldWindowsInstallationScript([Context] $context) {
+    . "$PSScriptRoot/Upgrade.ps1";
     $finished = $false;
     Remove-Item Env:\POSH_THEME -ErrorAction SilentlyContinue;
     $configPath = "$PSScriptRoot/../Config";

scripts/Windows/Scripts/Update.ps1

@@ -0,0 +1,34 @@
+<#
+    .SYNOPSIS
+    Updates the running Windows machine.
+#>
+function Update-WindowsInstallation {
+    <#
+        Runs the Windows update loop.
+    #>
+    function Start-UpdateLoop {
+        Write-Host "Preparing for Windows Update";
+        $null = Import-Module PSWindowsUpdate;
+
+        while (((Get-WindowsUpdate -IgnoreReboot).Count -gt 0)) {
+            Write-Host "There are updates available.";
+            Write-Host "Installing updates";
+
+            try {
+                $null = Install-WindowsUpdate -AcceptAll -IgnoreReboot -ErrorAction "SilentlyContinue";
+            }
+            catch { }
+
+            if ((Get-WURebootStatus -Silent)) {
+                Write-Information "A Reboot is Required!";
+                Write-Information "Windows will reboot now and the installation will be continued automatically.";
+                return;
+            }
+        } else {
+            Write-Information "Upgrading Windows finished successfully!";
+            return;
+        }
+    }
+
+    Start-UpdateLoop;
+}