function Read-SamsaraSoftwareEntries {
    param($Result, $Uninstall, [string]$View)
    foreach ($name in $Uninstall.GetSubKeyNames()) {
        $entry = $null
        try {
            $entry = $Uninstall.OpenSubKey($name, $false)
            if ($null -eq $entry) { throw 'Software entry not readable.' }
            $display = [string]$entry.GetValue('DisplayName', $null, [Microsoft.Win32.RegistryValueOptions]::DoNotExpandEnvironmentNames)
            if ($display) {
                $version = [string]$entry.GetValue('DisplayVersion', $null, [Microsoft.Win32.RegistryValueOptions]::DoNotExpandEnvironmentNames)
                if ($version -match '^(\d{1,5}(?:\.\d{1,5}){0,3})(?![\d.])') { $version = $Matches[1] } else { $version = 'Not collected' }
                $Result.data += [pscustomobject]@{ name = Get-SamsaraPublicName 'products' $display ($Result.data.Count + 1)
                    version = $version; registry_view = $View }
            }
        } catch { Add-SamsaraError $Result $_ 'Machine software entry' }
        finally { if ($entry) { $entry.Dispose() } }
    }
}

function Get-SamsaraSoftware {
    param($Result)
    # Explicit registry views avoid 32-bit redirection and require no installer queries.
    foreach ($view in @([Microsoft.Win32.RegistryView]::Registry64, [Microsoft.Win32.RegistryView]::Registry32)) {
        Invoke-SamsaraRead $Result ('Machine software registry ' + [string]$view) {
            $hive = $null; $uninstall = $null
            try {
                $hive = [Microsoft.Win32.RegistryKey]::OpenBaseKey([Microsoft.Win32.RegistryHive]::LocalMachine, $view)
                $uninstall = $hive.OpenSubKey('SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall', $false)
                if ($null -eq $uninstall) { return }
                Read-SamsaraSoftwareEntries $Result $uninstall ([string]$view)
            } finally {
                if ($uninstall) { $uninstall.Dispose() }
                if ($hive) { $hive.Dispose() }
            }
        }
    }
    $Result.limitations += 'Machine uninstall registrations in both registry views only. Per-user, portable, container and unregistered software may be absent. Publisher, installation date, uninstall commands and environment expansion are omitted. No installer consistency checks are triggered.'
}