<#
.SYNOPSIS
    Verifica alerta "UPS-ul nu mai comunica", dezactivand temporar dispozitivul de
    baterie HID - echivalentul software al cablului USB scos din UPS.

.DESCRIPTION
    Se ruleaza PE SERVER, ridicat (Administrator), cu monitorul deja pornit.

    Reactivarea dispozitivului e in blocul finally, ca sa nu ramana oprit daca pica
    sesiunea SSH sau se intrerupe scriptul. Testul e sigur cat timp serverul e pe
    retea: fara baterie vizibila, monitorul intra pe ramura de "comunicatie pierduta"
    si NU ia nicio decizie de oprire.

    Asteptarea implicita e calculata din config.json: commsLostPolls * pollSeconds,
    plus o marja.

.EXAMPLE
    powershell -ExecutionPolicy Bypass -File .\test-comms-loss.ps1
#>
[CmdletBinding()]
param(
    [string]$InstallDir = 'C:\ROMFAST\ups-monitor',
    [int]$WaitSeconds = 0
)

Set-StrictMode -Version 2.0
$ErrorActionPreference = 'Stop'

$dev = Get-PnpDevice -Class Battery -ErrorAction SilentlyContinue |
    Where-Object { $_.InstanceId -like 'HID\*' } | Select-Object -First 1
if (-not $dev) {
    throw 'Nu am gasit niciun dispozitiv de baterie HID - UPS-ul nu e vazut de Windows nici acum.'
}
Write-Host "Dispozitiv tinta: $($dev.FriendlyName)  [$($dev.InstanceId)]"

if ($WaitSeconds -le 0) {
    $cfg = Get-Content -LiteralPath (Join-Path $InstallDir 'config.json') -Raw -Encoding UTF8 | ConvertFrom-Json
    $WaitSeconds = ($cfg.commsLostPolls * $cfg.pollSeconds) + 45
}
Write-Host "Astept $WaitSeconds secunde cat dispozitivul e oprit."

try {
    Disable-PnpDevice -InstanceId $dev.InstanceId -Confirm:$false -ErrorAction Stop
    Start-Sleep -Seconds 3
    $n = @(Get-CimInstance Win32_Battery -ErrorAction SilentlyContinue).Count
    Write-Host "dezactivat : $((Get-PnpDevice -InstanceId $dev.InstanceId).Status)  | instante Win32_Battery = $n"
    Start-Sleep -Seconds $WaitSeconds
} finally {
    Enable-PnpDevice -InstanceId $dev.InstanceId -Confirm:$false -ErrorAction SilentlyContinue
    Start-Sleep -Seconds 10
    $n = @(Get-CimInstance Win32_Battery -ErrorAction SilentlyContinue).Count
    Write-Host "reactivat  : $((Get-PnpDevice -InstanceId $dev.InstanceId).Status)  | instante Win32_Battery = $n"
    if ($n -lt 1) {
        Write-Warning 'UPS-ul NU a revenit in Win32_Battery. Verifica Device Manager -> Batteries inainte de a pleca.'
    }
}

Start-Sleep -Seconds 45
Write-Host ''
Write-Host '--- ultimele linii de log ---'
Get-Content (Join-Path $InstallDir ('log\ups-monitor-{0}.log' -f (Get-Date -Format 'yyyy-MM'))) -Tail 12

Write-Host ''
Write-Host 'Asteptat: o linie ALERT "UPS-ul nu mai este vazut de Windows", un email trimis,'
Write-Host 'apoi "Comunicatia cu UPS-ul a revenit" si al doilea email.'