AspireDependencyPrompt.cs

// This is an example of using the Aspire Interaction service to prompt users
// to install a missing dependencies if it's not present.
//
// Ideally you can get all your dependencies through `dotnet restore`, or other package mangers that run as part of your app host,
// but that may not be possible, particularly if third parties don't provide package manager friendly setup.
//
// `Helper.IsInstalled()` and `Helper.Install()` implementations are not included and will vary based on your dependency

public static T WithDependencyInstaller<T>(this T builder)
   where T : IDistributedApplicationBuilder
{
   if (!builder.ExecutionContext.IsRunMode
         || !RuntimeInformation.IsOSPlatform(OSPlatform.Windows)
         || Environment.GetEnvironmentVariable("TF_BUILD") != null)
   {
      return builder;
   }

   builder.Eventing.Subscribe<BeforeStartEvent>((evt, ct) =>
   {
      _ = Task.Run(async () =>
      {
         if (Helper.IsInstalled())
         {
            return;
         }

         var interactionService = evt.Services.GetRequiredService<IInteractionService>();
         if (!interactionService.IsAvailable)
         {
            var log = evt.Services.GetRequiredService<ILogger<LoggerMarker>>();
            log.LogWarning("XYZ is not installed, please follow the instructions at https://myorg.com/internal-docs to install it.");
            return;
         }

         var result = await interactionService.PromptNotificationAsync(
                  title: "Install XYZ",
                  message: "You are missing XYZ. Would you like to install it?",
                  options: new NotificationInteractionOptions
                  {
                     Intent = MessageIntent.Warning,
                     LinkUrl = "https://myorg.com/internal-docs",
                     PrimaryButtonText = "Install",
                     ShowDismiss = false
                  });

         if (result.Canceled || result.Data == false)
         {
            return;
         }

         try
         {
            await Helper.Install(ct);
         }
         catch (Exception ex)
         {
            await interactionService.PromptMessageBoxAsync(
               title: "Installation Failed",
               message: $"""
                  Failed to install the XYr:
                  ```plain
                  {ex}
                  ```            
                  """,
               options: new MessageBoxInteractionOptions
               {
                  EnableMessageMarkdown = true,
                  Intent = MessageIntent.Error,
               });
         }
      });

      return Task.CompletedTask;
   });

   return builder;
}