$Realm='ZR'
$Keycloak_Server = "https://keycloak.roser-ict.com"

[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12

$CLientID = 'CLientID'
$ClientSecret = 'ClientSecret'
if(-not $ClientSecret)  {
    Write-Error 'Please configure $ClientSecret' -ErrorAction STOP
}

$RequestURL = $Keycloak_Server + "/auth/realms/$Realm/protocol/openid-connect/token"

$body = @{
    grant_type='client_credentials'
    client_id=$ClientID
    client_secret=$ClientSecret
}

# Token Request
$result = Invoke-WebRequest -Method POST -Uri $RequestURL -ContentType "application/x-www-form-urlencoded" -Body $body 

$Content = $result.Content | ConvertFrom-Json
$APIurl = 'https://totalzr-rsa-acc.roser-ict.com/api/configuration/languages' 
$Params = @{
 "URI"     = $APIurl 
 "Method"  = 'GET'
 "Headers" = @{
 "Content-Type"  = 'application/json'
 "Authorization" = "Bearer $($Content.access_token)"
 }
}

Invoke-RestMethod @Params