param(
 [Parameter(Mandatory)][string]$Hostname,
 [Parameter(Mandatory)][string]$TokenFile,
 [string]$Address,
 [string]$Endpoint = 'https://ddns.hosti.me/DNS-Endpoint/update'
)
$ErrorActionPreference = 'Stop'
if (([uri]$Endpoint).Scheme -ne 'https') { throw 'Use HTTPS.' }
$token = (Get-Content -LiteralPath $TokenFile -Raw).Trim()
$body = @{ hostname = $Hostname }
if ($Address) { $body.ip = $Address }
$response = Invoke-RestMethod -Uri $Endpoint -Method Post -Headers @{Authorization="Bearer $token"} -Body $body
if ($response -notmatch '^(good|nochg) ') { throw "Update rejected: $response" }
Write-Output $response