Test dashboard - Auth with LM or AD

Get-ADGroupMembership.ps1

function Get-ADGroupMembership { 
    Param(
        [Parameter(
            Position = 0,
            Mandatory = $true,
            ValueFromPipelineByPropertyName = $true
        )]
        [Alias('UserName','UN')]
        [String]
        $User
    )

    Add-Type -AssemblyName System.DirectoryServices.AccountManagement
    $AuthLookup = @{
		$true = 'machine'
		$false = 'domain'
	}

    $DS = [System.DirectoryServices.AccountManagement.PrincipalContext]::new($AuthLookup[($env:USERDOMAIN -eq $env:COMPUTERNAME)])
    $UserObject = [System.DirectoryServices.AccountManagement.UserPrincipal]::FindByIdentity($DS, $User)
    $Groups = $UserObject.GetAuthorizationGroups()
    $Groups | select -ExpandProperty Name
}

Test-ADCredential.ps1

function Test-ADCredential {
    Param(
        [Parameter(
        Position=0,
        Mandatory=$true,
        ValueFromPipeline = $true)]
        [pscredential]$Credential
    )
    
    Add-Type -AssemblyName System.DirectoryServices.AccountManagement
	$AuthLookup = @{
		$true = 'machine'
		$false = 'domain'
	}

    $DS = [System.DirectoryServices.AccountManagement.PrincipalContext]::new($AuthLookup[($env:USERDOMAIN -eq $env:COMPUTERNAME)])
    $Credential.GetNetworkCredential() | % {
        $DS.ValidateCredentials($_.UserName, $_.Password)
    }
}

Test-ADGroupMembership.ps1

function Test-ADGroupMembership {
    Param(
        [Parameter(
            Position = 0,
            Mandatory = $true,
            ValueFromPipelineByPropertyName = $true
        )]
        [Alias('UserName','UN')]
        [String]
        $User,
        [Parameter(
            Position=1,
            Mandatory=$true,
            ValueFromPipelineByPropertyName = $true
        )]
        [string]$TargetGroup
    )
    
    $Groups = Get-ADGroupMembership -User $User
    
    $TargetGroup -in $Groups
}

UniversalDashboard_-_ADLogin.ps1

Import-Module UniversalDashboard

$FormLogin = New-UDAuthenticationMethod -Endpoint {
    param([PSCredential]$Credentials)

    $AuthorizedGroup = 'Users'
    . ".\Test-ADGroupMembership.ps1"
	. ".\Test-ADCredential.ps1"
	. ".\Get-ADGroupMembership.ps1"
    if ($Credentials | ? {$_ | Test-ADCredential} | Test-ADGroupMembership -TargetGroup $AuthorizedGroup) {
        New-UDAuthenticationResult -Success -UserName $Credentials.UserName
    }

    New-UDAuthenticationResult -ErrorMessage "You aren't $($Credentials.UserName)!!!"
}

$LoginPage = New-UDLoginPage -AuthenticationMethod @($FormLogin)

$MyDashboardPage = New-UDPage -Url "/myDashboard" -Endpoint {
    New-UDCard -Title "Welcome, $User" -Text "This is your custom dashboard."
}

$Dashboard = New-UDDashboard -LoginPage $LoginPage -Page @(
    $MyDashboardPage
)

Start-UDDashboard -Dashboard $Dashboard -Port 8080 -Name 'TestDashboard'