// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using Aspire.Cli.Interaction;
using Aspire.Cli.NuGet;
using Aspire.Shared;
using Microsoft.Extensions.Logging;
using Semver;
 
namespace Aspire.Cli.Utils;
 
internal interface ICliUpdateNotifier
{
    Task CheckForCliUpdatesAsync(DirectoryInfo workingDirectory, CancellationToken cancellationToken);
    void NotifyIfUpdateAvailable();
}
 
internal class CliUpdateNotifier(
    ILogger<CliUpdateNotifier> logger,
    INuGetPackageCache nuGetPackageCache,
    IInteractionService interactionService) : ICliUpdateNotifier
{
    private IEnumerable<Shared.NuGetPackageCli>? _availablePackages;
 
    public async Task CheckForCliUpdatesAsync(DirectoryInfo workingDirectory, CancellationToken cancellationToken)
    {
        _availablePackages = await nuGetPackageCache.GetCliPackagesAsync(
            workingDirectory: workingDirectory,
            prerelease: true,
            nugetConfigFile: null,
            cancellationToken: cancellationToken);
    }
 
    public void NotifyIfUpdateAvailable()
    {
        if (_availablePackages is null)
        {
            return;
        }
 
        var currentVersion = GetCurrentVersion();
        if (currentVersion is null)
        {
            logger.LogDebug("Unable to determine current CLI version for update check.");
            return;
        }
 
        var newerVersion = PackageUpdateHelpers.GetNewerVersion(currentVersion, _availablePackages);
 
        if (newerVersion is not null)
        {
            interactionService.DisplayVersionUpdateNotification(newerVersion.ToString());
        }
    }
 
    protected virtual SemVersion? GetCurrentVersion()
    {
        return PackageUpdateHelpers.GetCurrentPackageVersion();
    }
}