function Get-ServerConfig {
    param(
        [string]$Path = ".\servers.json"
    )

    if (-not (Test-Path $Path)) {
        throw "Config-Datei nicht gefunden: $Path"
    }

    return Get-Content $Path -Raw | ConvertFrom-Json
}

function Set-ServerConfig {
    param(
        [string]$Path = ".\servers.json",
        [string]$Name
    )

    $servers = Get-ServerConfig -Path $Path

    $server = $servers.groups.TST | Where-Object {$_.name -eq $Name}
    $server | Add-Member -MemberType NoteProperty -Name "role" -Value "web"

    $servers | ConvertTo-Json -Depth 10 | Set-Content $Path


    return $server
}