using System.Reflection;
namespace Sbroenne.ExcelMcp.CLI.Infrastructure;
/// <summary>
/// Checks for CLI updates on daemon startup and notifies via Windows notification.
/// </summary>
internal static class DaemonVersionChecker
{
/// <summary>
/// Checks for updates and returns update information if available.
/// This method is non-blocking and fails silently if the check cannot be completed.
/// </summary>
/// <returns>Update info if update is available, null otherwise.</returns>
public static async Task<UpdateInfo?> CheckForUpdateAsync(CancellationToken cancellationToken = default)
{
try
{
var currentVersion = GetCurrentVersion();
var latestVersion = await NuGetVersionChecker.GetLatestVersionAsync(cancellationToken);
if (latestVersion == null)
{
// Could not check (network error, timeout, etc.)
return null;
}
if (CompareVersions(currentVersion, latestVersion) < 0)
{
// Update available
return new UpdateInfo
{
CurrentVersion = currentVersion,
LatestVersion = latestVersion,
UpdateAvailable = true
};
}
// Already up to date
return null;
}
catch
{
// Fail silently - version check should never block daemon startup
return null;
}
}
private static string GetCurrentVersion()
{
var assembly = Assembly.GetExecutingAssembly();
var informational = assembly.GetCustomAttribute<AssemblyInformationalVersionAttribute>()?.InformationalVersion;
// Strip git hash suffix (e.g., "1.2.0+abc123" -> "1.2.0")
return informational?.Split('+')[0] ?? assembly.GetName().Version?.ToString() ?? "0.0.0";
}
private static int CompareVersions(string current, string latest)
{
if (Version.TryParse(current, out var currentVer) && Version.TryParse(latest, out var latestVer))
return currentVer.CompareTo(latestVer);
return string.Compare(current, latest, StringComparison.Ordinal);
}
}
/// <summary>
/// Information about an available update.
/// </summary>
internal sealed class UpdateInfo
{
public required string CurrentVersion { get; init; }
public required string LatestVersion { get; init; }
public required bool UpdateAvailable { get; init; }
public static string GetNotificationTitle() => "Excel CLI Update Available";
public string GetNotificationMessage() =>
$"Version {LatestVersion} is available (current: {CurrentVersion}).\n" +
"Update via: dotnet tool update --global Sbroenne.ExcelMcp.CLI";
}
