# Für die Installation der benötigten Powershell Module führen sie bitte folgende Schritte auf einem Windows 10 Rechner aus:
# Öffnen sie eine administrative Powershell
# Entfernen sie dazu die Kommentarzeichen #
#---------------------------------Modul Installation Anfang---------------------------------
#Set-Executionpolicy RemoteSigned
#Install-Module -Name Microsoft.Graph
#Import-Module Microsoft.Graph
#---------------------------------Installation Ende ----------------------------------------

# Berechtigungen für intune-graph-apis https://learn.microsoft.com/en-us/mem/intune/developer/intune-graph-apis
Connect-MgGraph "User.Read.All","Group.Read.All","DeviceManagementManagedDevices.ReadWrite.All","DeviceManagementManagedDevices.PrivilegedOperations.All"

# Zum Testen die folgende Zeile auskommentieren
#$devices = Get-MgDeviceManagementManagedDevice -Filter "model eq 'ipad (9th generation)'"
$devices = Get-MgDeviceManagementManagedDevice -Filter "EmailAddress eq 'andreas.renner@bg-gallus.at'"
# oder alle ios Geräte:
#$devices = Get-MgDeviceManagementManagedDevice -Filter "OperatingSystem eq 'ios'"



foreach ($device in $devices) {
    $DeviceID = $device.id
#    $DisplayName = $device.userDisplayName
    $DisplayName = $device.userDisplayName + " " + $device.deviceCategoryDisplayName.substring($device.deviceCategoryDisplayName.length-4)
    $Ressource = "deviceManagement/managedDevices('$DeviceID')/setDeviceName"
    $graphAPIVersion="Beta"
    $uri="https://graph.microsoft.com/$graphAPIVersion/$($Ressource)"

$JSONName = @"
{
deviceName:"$DisplayName"
}
"@
    
    $ausgabe=$device.id + "," + $DisplayName + "," + $device.deviceCategoryDisplayName
    echo $ausgabe

    Invoke-MgGraphRequest -Method POST -Uri $uri -Body $JSONName -Verbose
}
Disconnect-MgGraph