functions/directoryRoles/Register-TmfDirectoryRole.ps1

function Register-TmfDirectoryRole {
    [CmdletBinding()]
    Param (
        [bool] $present = $true,    
        [string] $displayName,
        [object[]] $members,
            
        [System.Management.Automation.PSCmdlet]
        $Cmdlet = $PSCmdlet
    )
    
    begin
    {
        Test-GraphConnection -Cmdlet $Cmdlet
        $resourceName = "directoryRoles"
        if (!$script:desiredConfiguration[$resourceName]) {
            $script:desiredConfiguration[$resourceName] = @()
        }

        if ($script:desiredConfiguration[$resourceName].displayName -contains $displayName) {            
            $alreadyLoaded = $script:desiredConfiguration[$resourceName] | Where-Object {$_.displayName -eq $displayName}
        }
    }

    process {
        if (Test-PSFFunctionInterrupt) { return }                

        $object = [PSCustomObject] @{
            present = $present
            displayName = $displayName
        }

        $memberIDs = @()
        if ($members) {
            foreach ($member in $members) {
                switch ($member.type) {
                    "group" {
                        $memberID = Resolve-Group -InputReference $member.reference -SearchInDesiredConfiguration -Cmdlet $PSCmdlet
                        $memberIDs += $memberID
                    }
                    "singleUser" {
                        $memberID = Resolve-User -InputReference $member.reference -SearchInDesiredConfiguration -Cmdlet $PSCmdlet
                        $memberIDs += $memberID
                    }
                }
            }
        }

        $roleId = Resolve-DirectoryRole -InputReference $displayName -SearchInDesiredConfiguration -DontFailIfNotExisting -Cmdlet $PSCmdlet

        Add-Member -InputObject $object -MemberType NoteProperty -Name "roleId" -Value $roleId
        Add-Member -InputObject $object -MemberType NoteProperty -Name "memberIDs" -Value $memberIDs
        Add-Member -InputObject $object -MemberType ScriptMethod -Name Properties -Value { ($this | Get-Member -MemberType NoteProperty).Name };

        if ($alreadyLoaded) {
            $script:desiredConfiguration[$resourceName][$script:desiredConfiguration[$resourceName].IndexOf($alreadyLoaded)] = $object
        }
        else {
            $script:desiredConfiguration[$resourceName] += $object
        }
    }

    end {}
}