using Hi.Disp;
using Hi.Geom;
using Hi.HiNcKits;
using Microsoft.Extensions.Logging;
using System;

namespace Sample.Disp;

/// <summary>
/// Runs a display sample to the point where its <see cref="IDisplayee"/> is ready to be rendered.
/// HiAPI ships no rendering canvas, so the samples in this project stop at the handover: they
/// compose the displayee and report it, and the application hands that same object to a canvas of
/// its own. See the Building Your Own Rendering Canvas guide for the canvas side.
/// </summary>
/// <remarks>
/// ### Source Code
/// [!code-csharp[SampleCode](~/../Hi.Sample/Disp/DemoUtil.cs)]
/// </remarks>
public static class DemoUtil
{
	/// <summary>
	/// Initializes the application, reports the displayee's extent, and shuts down again —
	/// the headless equivalent of opening a window on it.
	/// </summary>
	/// <param name="title">A name for the sample, used in the console output.</param>
	/// <param name="displayee">The object a rendering canvas would display.</param>
	public static void Present(string title, IDisplayee displayee)
	{
		if (displayee is null) throw new ArgumentNullException(nameof(displayee));

		using var loggerFactory = LoggerFactory.Create(b => b.AddConsole());
		LocalApp.AppBegin(loggerFactory.CreateLogger("Hi.Sample"));
		try
		{
			Box3d box = new Box3d();
			displayee.ExpandToBox3d(ref box);
			Console.WriteLine($"{title}: {displayee.GetType().Name} bounding {box}");
			Console.WriteLine("Assign it to your canvas' DispEngine.Displayee to see it.");
		}
		finally
		{
			LocalApp.AppEnd();
		}
	}
}