param(
    [string]$HostName = "192.168.4.1",
    [int]$Port = 80,
    [double]$IntervalSeconds = 1
)

$ErrorActionPreference = "Stop"

$scriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path
$pushScript = Join-Path $scriptDir "push-metrics-http.ps1"
$pidFile = Join-Path $scriptDir "metrics-ap-push.pid"
$logFile = Join-Path $scriptDir "metrics-ap-push.log"
$errFile = Join-Path $scriptDir "metrics-ap-push.err.log"

if (Test-Path $pidFile) {
    $oldPid = Get-Content $pidFile -ErrorAction SilentlyContinue
    if ($oldPid -and (Get-Process -Id ([int]$oldPid) -ErrorAction SilentlyContinue)) {
        Write-Host "AP metrics push is already running. PID: $oldPid"
        exit 0
    }
}

$args = @(
    "-NoProfile",
    "-ExecutionPolicy", "Bypass",
    "-File", "`"$pushScript`"",
    "-HostName", $HostName,
    "-Port", $Port,
    "-IntervalSeconds", $IntervalSeconds
)

$process = Start-Process powershell.exe `
    -ArgumentList $args `
    -WindowStyle Hidden `
    -RedirectStandardOutput $logFile `
    -RedirectStandardError $errFile `
    -PassThru

Set-Content -Path $pidFile -Value $process.Id -Encoding ascii
Write-Host "AP metrics push started. PID: $($process.Id)"
Write-Host "Log: $logFile"