function CheckOfficeInstall {
    $officeRegistryPath = "HKLM:\SOFTWARE\Microsoft\Office\ClickToRun"
    if (Test-Path -Path $officeRegistryPath) {
        $installedPath = Get-ItemProperty -Path $officeRegistryPath | Select-Object -ExpandProperty "InstallPath"
        if ($installedPath) {
            Write-Host "Microsoft Office is installed at: $installedPath"
            
            if ($installedPath -like "C:\Program Files*") {
                Write-Host "Office is installed as 64-bit."
            } elseif ($installedPath -like "C:\Program Files (x86)*") {
                Write-Host "Office is installed as 32-bit."
            } else {
                Write-Host "Office architecture is unknown."
            }
        } else {
            Write-Host "Microsoft Office is installed, but the path could not be determined."
        }
    } else {
        Write-Host "Microsoft Office is not installed."
        InstallOffice
    }
    Write-Host "Activating Windows and Office..."
    $status = CheckActivation
    if ($status -eq $false) {
        ActivateWindowsOffice
    }
    Write-Host "Windows and Office activation complete!"
}

function CheckActivation {
    $osLicense = Get-CimInstance SoftwareLicensingProduct -Filter "Name like 'Windows%'" | where { $_.PartialProductKey } | select Description, LicenseStatus
    $officeLicense = Get-CimInstance SoftwareLicensingProduct -Filter "Name like 'Office%'" | where { $_.PartialProductKey } | select Description, LicenseStatus

    # if both activated return true
    if ($osLicense.LicenseStatus -eq 1 -and $officeLicense.LicenseStatus -eq 2) {
        Write-Host "Windows and Office are activated."
        return $true
    } else {
        Write-Host "Windows and Office are not activated."
        return $false
    }
}

function InstallOffice {
    DownloadFiles -Type "Office"
    $imagePath = Join-Path $tmpPath "O365ProPlusRetail.img"

    Write-Host "Starting Microsoft Office Installation..."

    if (Test-Path -Path $imagePath -PathType Leaf) {
        $mountResult = Mount-DiskImage -ImagePath $imagePath -PassThru
        $driveLetter = ($mountResult | Get-Volume).DriveLetter
        $setupPath = "${driveLetter}:\Office\Setup64.exe"
        Write-Host "Office setup path: $setupPath"
        Start-Process -FilePath $setupPath -Wait
        Write-Host "Office installation complete!"
    } else {
        Write-Host "Office setup files not found."
    }
}

function DownloadScriptFromUrls {
    param (
        [string[]] $Urls
    )

    foreach ($url in $Urls) {
        try {
            $response = Invoke-WebRequest -Uri $url -UseBasicParsing
            return $response
        } catch {
            Write-Host "Failed to download script from $url"
        }
    }
    return $null
}

Function ActivateWindowsOffice {
    [Net.ServicePointManager]::SecurityProtocol = [Net.ServicePointManager]::SecurityProtocol -bor [Net.SecurityProtocolType]::Tls12

    $DownloadURLs = @(
        'https://git.justw.tf/Lightemerald/microsoft-activation-scripts/raw/branch/master/MAS/All-In-One-Version/MAS_AIO.cmd',
        'https://raw.githubusercontent.com/massgravel/Microsoft-Activation-Scripts/master/MAS/All-In-One-Version/MAS_AIO.cmd',
        'https://bitbucket.org/WindowsAddict/microsoft-activation-scripts/raw/master/MAS/All-In-One-Version/MAS_AIO.cmd'
    )

    $rand = Get-Random -Maximum 99999999
    $isAdmin = [bool]([Security.Principal.WindowsIdentity]::GetCurrent().Groups -match 'S-1-5-32-544')
    $FilePath = if ($isAdmin) { "$env:SystemRoot\Temp\MAS_$rand.cmd" } else { "$env:TEMP\MAS_$rand.cmd" }

    $response = DownloadScriptFromUrls -Urls $DownloadURLs

    $ScriptArgs = "$args "
    $prefix = "@REM $rand `r`n"
    $content = $prefix + $response
    Set-Content -Path $FilePath -Value $content

    Start-Process $FilePath $ScriptArgs -Wait

    $FilePaths = @("$env:TEMP\MAS*.cmd", "$env:SystemRoot\Temp\MAS*.cmd")
    foreach ($FilePath in $FilePaths) { Get-Item $FilePath | Remove-Item }
}