Get-NormalizedO365.ps1

<#
    .SYNOPSIS
 
    This function is used to normalize the DN information of users on premises to SMTP addresses utilized in Office 365.
 
    .DESCRIPTION
 
    This function is used to normalize the DN information of users on premises to SMTP addresses utilized in Office 365.
 
    .PARAMETER GlobalCatalog
 
    The global catalog to make the query against.
 
    .PARAMETER DN
 
    The DN of the object to pass to normalize.
 
    .PARAMETER CN
 
    THe canonical name of an object to normalize.
 
    .PARAMETER adCredential
 
    The AD credential for global catalog connections.
 
    .PARAMETER originalGroupDN
 
    The DN of the original group on premises.
 
    .PARAMETER isMember
 
    Boolean if the object to be tested is a member.
 
    .OUTPUTS
 
    Selects the mail address of the user by DN and returns the mail address.
 
    .EXAMPLE
 
    get-normalizedDN -globalCatalog GC -DN DN -adCredential CRED -isMember FALSE
 
    #>

    Function Get-NormalizedO365
     {
        [cmdletbinding()]

        Param
        (
            [Parameter(Mandatory = $true)]
            $attributeToNormalize
        )

        #Output all parameters bound or unbound and their associated values.

        write-functionParameters -keyArray $MyInvocation.MyCommand.Parameters.Keys -parameterArray $PSBoundParameters -variableArray (Get-Variable -Scope Local -ErrorAction Ignore)

        #Funtion variables.

        $functionRecipient = $null
        $functionObject = $null
        $functionReturnArray = @()

        #Start function processing.

        Out-LogFile -string "********************************************************************************"
        Out-LogFile -string "BEGIN GET-NormalizedO365"
        Out-LogFile -string "********************************************************************************"
        
        #Get the specific user using ad providers.

        out-logfile -string "Determine if attribute has values to convert."

        if ($attributeToNormalize.count -gt 0)
        {
            out-logfile -string "Attribute to convert has values."

            foreach ($member in $attributeToNormalize)
            {
                out-logfile -string ("Testing member: "+$member)

                try {
                    out-logfile -string "Testing for recipient type."

                    $functionRecipient = get-o365Recipient -identity $member -errorAction STOP

                    $functionObject = New-Object PSObject -Property @{
                        PrimarySMTPAddressOrUPN = $functionRecipient.primarySMTPAddress
                        ExternalDirectoryObjectID = ("Value_"+$functionRecipient.externalDirectoryObjectID)
                        isError=$NULL
                        isErrorMessage=$null
                    }

                    out-logfile -string $functionObject
                }
                catch {

                    out-logfile -string $_
                    out-logfile -string "Testing for recipient type failed."

                    try {

                        out-logfile -string "Testing object for user type."

                        $functionRecipient = get-o365user -identity $member -errorAction STOP

                        $functionObject = New-Object PSObject -Property @{
                            PrimarySMTPAddressOrUPN = $functionRecipient.UserPrincipalName
                            ExternalDirectoryObjectID = ("Value_"+$functionRecipient.externalDirectoryObjectID)
                            isError=$NULL
                            isErrorMessage=$null
                        }

                        out-logfile -string $functionObject
                    }
                    catch {
                        out-logfile -string $_
                        out-logfile -string "A user or recipient in the group cannot be located." -isError:$TRUE
                    }
                }

                $functionReturnArray += $functionObject
            }
        }
        else 
        {
            out-logfile -string "No values to normalize were provided."
            $functionReturnArray = @()
        }

        Out-LogFile -string "END GET-NormalizedO365"
        Out-LogFile -string "********************************************************************************"
        
        return $functionReturnArray
    }