# ShowComputerInfo.ps1

Write-Host "==========================================" -ForegroundColor Cyan
Write-Host "   RAPORT O STANIE KOMPUTERA" -ForegroundColor Cyan
Write-Host "==========================================" -ForegroundColor Cyan

# 1. Zużycie miejsca na dysku C:
$diskC = Get-CimInstance Win32_LogicalDisk -Filter "DeviceID='C:'"
$totalDiskGb = [math]::Round($diskC.Size / 1GB, 2)
$freeDiskGb  = [math]::Round($diskC.FreeSpace / 1GB, 2)
$usedDiskGb  = $totalDiskGb - $freeDiskGb
$diskPercent = [math]::Round(($usedDiskGb / $totalDiskGb) * 100, 1)

$diskColor = if ($diskPercent -ge 90) { "Red" } elseif ($diskPercent -ge 75) { "Yellow" } else { "Green" }
Write-Host "Dysk C:        " -NoNewline
Write-Host "$usedDiskGb GB zajęte z $totalDiskGb GB ($diskPercent%)" -ForegroundColor $diskColor

# 2. Liczba zalogowanych użytkowników (interaktywnych)
$loggedUsers = (Get-Process explorer -ErrorAction SilentlyContinue).Count
$userColor = if ($loggedUsers -gt 0) { "Yellow" } else { "Green" }
Write-Host "Użytkownicy:   " -NoNewline
Write-Host "$loggedUsers zalogowanych sesji graficznych" -ForegroundColor $userColor

# 3. Czas działania (Uptime) i ostatni restart
$os = Get-CimInstance Win32_OperatingSystem
$lastBoot = $os.LastBootUpTime
$uptime = (Get-Date) - $lastBoot
Write-Host "Uptime:        " -NoNewline
Write-Host "$($uptime.Days) dni, $($uptime.Hours) godz, $($uptime.Minutes) min (Uruchomiono: $lastBoot)" -ForegroundColor White

# 4. Zużycie RAM
$totalRamGb = [math]::Round($os.TotalVisibleMemorySize / 1MB, 2)
$freeRamGb  = [math]::Round($os.FreePhysicalMemory / 1MB, 2)
$usedRamGb  = $totalRamGb - $freeRamGb
$ramPercent = [math]::Round(($usedRamGb / $totalRamGb) * 100, 1)

$ramColor = if ($ramPercent -ge 90) { "Red" } elseif ($ramPercent -ge 75) { "Yellow" } else { "Green" }
Write-Host "RAM:           " -NoNewline
Write-Host "$usedRamGb GB zajęte z $totalRamGb GB ($ramPercent%)" -ForegroundColor $ramColor

Write-Host "==========================================" -ForegroundColor Cyan