Untitled

# Imposta le variabili per Outlook
$Outlook = New-Object -ComObject Outlook.Application
$Namespace = $Outlook.GetNamespace("MAPI")
$PublicFolders = $Namespace.GetDefaultFolder(18) # 18 corrisponde alle cartelle pubbliche

# Accedi alla cartella pubblica desiderata
$ContactsFolder = $PublicFolders.Folders | Where-Object { $_.Name -eq "Rubrica Generale" }

# Definisci la dimensione del batch
$batchSize = 100
$duplicatesRemoved = $true

# Continua a rimuovere i duplicati finché ce ne sono
while ($duplicatesRemoved) {
    $Contacts = $ContactsFolder.Items
    $UniqueContacts = @{}
    $duplicatesRemoved = $false
    $batchCount = [math]::Ceiling($Contacts.Count / $batchSize)

    for ($i = 0; $i -lt $batchCount; $i++) {
        $start = $i * $batchSize
        $end = ($i + 1) * $batchSize - 1
        if ($end -ge $Contacts.Count) {
            $end = $Contacts.Count - 1
        }

        for ($j = $start; $j -le $end; $j++) {
            $Contact = $Contacts[$j]
            if (-not [string]::IsNullOrWhiteSpace($Contact.MobileTelephoneNumber)) {
                if (-not $UniqueContacts.ContainsKey($Contact.MobileTelephoneNumber)) {
                    $UniqueContacts.Add($Contact.MobileTelephoneNumber, $Contact)
                } else {
                    $Contact.Delete()
                    $duplicatesRemoved = $true
                }
            }
        }
    }
}