param(
    [string]$Server = 'rustdesk.alencindrak.from.hr',
    [string]$ApiServer = 'https://rustdesk.alencindrak.from.hr',
    [string]$PublicKey = 'v8iCdt8MxgaXKZW8GUFXGaJJC72WQggO4S+mSgohJ9k='
)
$ErrorActionPreference = 'Stop'
try {
    $rdIdentity = [Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()
    if (-not $rdIdentity.IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)) {
        throw 'Pokrenite installer kao administrator.'
    }
    $rdExe = Join-Path $env:ProgramFiles 'RustDesk\RustDesk.exe'
    if (-not (Test-Path -LiteralPath $rdExe)) { throw 'RustDesk nije instaliran.' }
    $rdService = Get-Service -Name RustDesk -ErrorAction Stop
    if ($rdService.Status -ne 'Running') { Start-Service -Name RustDesk }
    $rdService.WaitForStatus('Running', [TimeSpan]::FromSeconds(20))
    $rdOptions = [ordered]@{
        'key' = $PublicKey
        'custom-rendezvous-server' = $Server
        'relay-server' = "${Server}:21117"
        'api-server' = $ApiServer
    }
    foreach ($rdOption in $rdOptions.GetEnumerator()) {
        $rdVerified = $false
        for ($rdAttempt = 0; $rdAttempt -lt 6; $rdAttempt++) {
            & $rdExe --option $rdOption.Key $rdOption.Value | Out-Null
            Start-Sleep -Milliseconds 750
            $rdActual = (& $rdExe --option $rdOption.Key | Out-String).Trim()
            if ($rdActual -eq $rdOption.Value) { $rdVerified = $true; break }
        }
        if (-not $rdVerified) { throw "Postavka '$($rdOption.Key)' nije potvrdena. Ponovno pokrenite installer." }
    }
    Write-Output 'RustDesk je podesen. Prijavite se u aplikaciji i otvorite Accessible devices.'
    exit 0
} catch {
    Write-Error $_.Exception.Message -ErrorAction Continue
    exit 1
}