Unattended install of Wix Toolset Visual Studio 2017 Extension

Install-VsixExtension.ps1

$extensionDisplayName = "Wix Toolset Visual Studio 2017 Extension";

$extensionApiVersion = "api-version=3.2-preview.1"
$marketplaceQueryUrl = "https://marketplace.visualstudio.com/_apis/public/gallery/extensionquery";
$extensionQuery = "{`"flags`":`"262`"," + 
  "`"filters`":[" + 
    "{" + 
      "`"criteria`":" + 
        "[" + 
          "{`"filterType`":`"14`",`"value`":`"1033`"}," + 
          "{`"filterType`":`"8`",`"value`":`"Microsoft.VisualStudio.Community`"}," + 
          "{`"filterType`":`"10`",`"value`":`"$extensionDisplayName`"}" +
        "]," + 
        "`"sortBy`":`"0`"," + 
        "`"sortOrder`":`"2`"," + 
        "`"pageSize`":`"1`"," + 
        "`"pageNumber`":`"1`"" + 
      "}" + 
    "]" + 
  "}"

$webClient = New-Object System.Net.WebClient
$webClient.Headers["Accept"] = "application/json; $extensionApiVersion";
$webClient.Headers["Content-Type"] = "application/json; charset=utf-8";
$extensionQueryResponse = $webClient.UploadString($marketplaceQueryUrl, $extensionQuery);
$extensionQueryResponsJson = $extensionQueryResponse | ConvertFrom-Json

$extensionUrl = $extensionQueryResponsJson.results[0].extensions[0].versions[0].files | Where-Object { $_.assetType.EndsWith(".vsix")} | Select-Object -ExpandProperty source -First 1;
$extensionFileName = [IO.Path]::GetFileName($extensionUrl)
$extensionFilePath = ".\$extensionFileName"
if(Test-Path $extensionFilePath){
  Remove-Item $extensionFilePath -Force
}
(New-Object System.Net.WebClient).DownloadFile($extensionUrl, $extensionFilePath)

$vsixInstaller = Get-ChildItem -Path "$(${env:ProgramFiles(x86)})\Microsoft Visual Studio" |
  ? { !$PsIsContainer -and $_.Name.StartsWith("20") } |
  % { @(
        [System.IO.Path]::Combine($_.FullName, "Enterprise", "Common7\IDE"), 
        [System.IO.Path]::Combine($_.FullName, "Professional", "Common7\IDE"), 
        [System.IO.Path]::Combine($_.FullName, "Community", "Common7\IDE"))
    } |
  ? { (Test-Path -Path $_) } |
  % { Get-ChildItem -Path $_  | ? { !$PsIsContainer -and $_.Name.Equals("VSIXInstaller.exe", "OrdinalIgnoreCase") } } |
  Select-Object -ExpandProperty FullName -First 1

$sku = Get-ChildItem -Path "$(${env:ProgramFiles(x86)})\Microsoft Visual Studio" |
  ? { !$PsIsContainer -and $_.Name.StartsWith("20") } |
  % { @(
        [System.IO.Path]::Combine($_.FullName, "Enterprise"), 
        [System.IO.Path]::Combine($_.FullName, "Professional"), 
        [System.IO.Path]::Combine($_.FullName, "Community"))
    } |
  ? { (Test-Path -Path $_) } |  Select-Object { (New-Object System.IO.DirectoryInfo($_)).Name } -First 1;

$installProcess = Start-Process `
  -FilePath "$(${env:ProgramFiles(x86)})\Microsoft Visual Studio\2017\Community\Common7\IDE\VSIXInstaller.exe" `
  -Wait `
  -ArgumentList @(
    "/q",
    "/skuName:$sku",
    "/skuVersion:15.0",
    "$extensionFilePath"
  )

if(Test-Path $extensionFilePath){
  Remove-Item $extensionFilePath -Force
}