Function for releaselist information

[MichaelMcCool]

I was playing around a bit with the release code and have made this into its own function. You can get the release information for desktops by running "Get-WindowsBuildList -Type Desktop" and servers by running "Get-WindowsBuildList -Type Server". I also updated the FullVersion property to be a [version] type so sorting by version number works properly on the export. The functionality can be expanded simply by adding additional URLs and regex patterns. I'm not entirely sure what the best option is here, but I needed the server release details and there wasn't a good way to get them programmatically. Now, it's a stand-alone function that I can use where needed.

function Get-WindowsBuildList {
    [CmdletBinding()]
    param (
        [ValidateSet("Desktop","Server")]
        [Parameter(Mandatory=$true)]
        $Type
    )
    switch ($type){
        "Desktop"   {
            $msdata = @("https://learn.microsoft.com/en-us/windows/release-health/release-information",
            "https://learn.microsoft.com/en-us/windows/release-health/windows11-release-information")
            $pattern='(?msi)<strong>Version (.*?) \(OS Build (\d{1,})\)<\/strong>'
        }
        "Server"    {
            $msdata= @("https://learn.microsoft.com/en-us/windows/release-health/windows-server-release-info")
            $pattern='<strong>Windows Server (.*?)\(OS build (\d{1,})\)<\/strong>'
        }
    }
    $releaseList = New-Object System.Collections.ArrayList
    foreach ($sourceURL in $msdata) {
        $source = Invoke-WebRequest $sourceURL -UseBasicParsing
        $allReleases = [RegEx]::New($pattern).Matches($source.RawContent)
        $allReleases.ForEach{
            $entry=[PSCustomObject]@{
                    Version = $_.Groups[2].value
                    FullVersion = [version]"10.0.$($_.Groups[2].Value)"
                    Build = $_.Groups[1].Value
                }
            $releaseList.add($entry) | Out-Null
        }
    }
    $releaseList | sort-object -property FullVersion | select-object Version,FullVersion,Build -Unique
}

The output for Desktop looks the same as it's been:

Version FullVersion Build     
------- ----------- -----     
10240   10.0.10240  1507 (RTM)
10586   10.0.10586  1511      
14393   10.0.14393  1607      
15063   10.0.15063  1703      
16299   10.0.16299  1709      
17134   10.0.17134  1803      
17763   10.0.17763  1809      
18362   10.0.18362  1903
18363   10.0.18363  1909
19041   10.0.19041  2004
19042   10.0.19042  20H2
19043   10.0.19043  21H1
19044   10.0.19044  21H2
19045   10.0.19045  22H2
22000   10.0.22000  21H2
22621   10.0.22621  22H2
22631   10.0.22631  23H2
26100   10.0.26100  24H2
26100   10.0.26100  24H2
26200   10.0.26200  25H2
26200   10.0.26200  25H2

While server support now returns:

Version FullVersion Build
------- ----------- -----
14393   10.0.14393  2016
17763   10.0.17763  2019
20348   10.0.20348  2022
26100   10.0.26100  2025