modified layout (#2)

Reviewed-on: #2
Co-authored-by: Aleksandr Neychev <alexnejchev73@gmail.com>

Packaging/build-msix.ps1

@@ -18,10 +18,19 @@
     section. It is handed out there together with the reserved application name;
     the default is only good enough for a check on your own machine.
 
+.PARAMETER Install
+    Puts the package onto this machine to see it working. Developer mode has to
+    be on; a signature is not needed, because what gets registered is the layout
+    the package is made of rather than the package file.
+
 .EXAMPLE
     # A check on your own machine: your architecture alone
     pwsh -File Packaging\build-msix.ps1 -Architectures x64
 
+.EXAMPLE
+    # Build and install in one go, to click through the application
+    pwsh -File Packaging\build-msix.ps1 -Architectures x64 -Install
+
 .EXAMPLE
     # A build for the Store — the identity comes from Partner Center
     pwsh -File Packaging\build-msix.ps1 -Version 1.0.1.0 `
@@ -39,6 +48,8 @@ param(
     [ValidateSet('x64', 'arm64')]
     [string[]] $Architectures = @('x64', 'arm64'),
 
+    [switch] $Install,
+
     [string] $OutputPath
 )
 
@@ -65,6 +76,25 @@ if (-not (Test-Path $assets)) {
     throw "No logos found in '$assets'. Run Packaging\New-Assets.ps1 first."
 }
 
+if ($Install) {
+    # Both things below are checked before the build rather than after it: the
+    # build takes minutes, and neither of them gets any truer while it runs
+
+    $developerMode = Get-ItemPropertyValue `
+        'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\AppModelUnlock' `
+        -Name 'AllowDevelopmentWithoutDevLicense' -ErrorAction SilentlyContinue
+
+    if ($developerMode -ne 1) {
+        throw 'Installing needs developer mode: Settings - System - For developers - Developer mode. Without a signature Windows registers a package no other way.'
+    }
+
+    $machineArchitecture = if ([System.Runtime.InteropServices.RuntimeInformation]::OSArchitecture -eq 'Arm64') { 'arm64' } else { 'x64' }
+
+    if ($Architectures -notcontains $machineArchitecture) {
+        throw "This machine is $machineArchitecture, and that architecture is not being built. Add it to -Architectures, or drop -Install."
+    }
+}
+
 function Invoke-Tool {
     <#
         .SYNOPSIS
@@ -136,6 +166,26 @@ Invoke-Tool -Path 'dotnet' -Arguments @('restore', $toolsProject, '--nologo')
 $sdkTools = Get-SdkToolsPath
 $makeappx = Get-SdkTool -Name 'makeappx.exe' -PackagePath $sdkTools
 
+# A package registered out of the layout runs straight from that folder, and
+# the folder is about to be wiped. Left in place, the registration would point
+# at files that are gone — an application that neither starts nor uninstalls
+# the usual way. This happens whatever the build was asked for, so -Install has
+# no say in it.
+#
+# Only a registration made from this very folder is removed. A copy installed
+# from the Store answers to the same name and is none of our business
+foreach ($installed in @(Get-AppxPackage -Name $IdentityName)) {
+    $location = $installed.InstallLocation
+    if (-not $location) { continue }
+
+    if (-not $location.TrimEnd('\').StartsWith($layoutRoot.TrimEnd('\'), [StringComparison]::OrdinalIgnoreCase)) {
+        continue
+    }
+
+    Write-Host "Removing the registered $($installed.PackageFullName)..." -ForegroundColor Cyan
+    Remove-AppxPackage -Package $installed.PackageFullName
+}
+
 Remove-Item $layoutRoot -Recurse -Force -ErrorAction SilentlyContinue
 New-Item -ItemType Directory -Path $packagesPath -Force | Out-Null
 
@@ -198,9 +248,25 @@ if ($built.Count -gt 1) {
     Remove-Item $bundleInput -Recurse -Force
 }
 
+if ($Install) {
+    Write-Host "Installing the $machineArchitecture build..." -ForegroundColor Cyan
+
+    # The layout is registered rather than the package file: the two hold the
+    # same thing, but a package file Windows only installs when it is signed
+    Add-AppxPackage -Register (Join-Path $layoutRoot "$machineArchitecture\AppxManifest.xml")
+}
+
 Write-Host ''
 Write-Host 'Done.' -ForegroundColor Green
 Write-Host "  $result"
 
 Write-Host ''
 Write-Host '  This file is uploaded to Partner Center as it is.'
+
+if ($Install) {
+    Write-Host ''
+    Write-Host '  The application is installed and runs out of the layout folder, so'
+    Write-Host '  building again would pull the files out from under it. This script'
+    Write-Host '  takes care of that itself; to remove the application by hand:'
+    Write-Host "    Remove-AppxPackage (Get-AppxPackage -Name $IdentityName).PackageFullName"
+}