using System.Linq;
using gaemstone.ECS;

namespace gaemstone;

public class Universe : World
{
	public ModuleManager Modules { get; }

	public Universe(params string[] args)
		: base(args)
	{
		Modules = new(this);

		// Bootstrap some stuff, so we can register flecs properly.
		New("/gaemstone/Doc/DisplayType")
			.Add(LookupByPathOrThrow("/flecs/core/Exclusive"))
			.Build().CreateLookup<Doc.DisplayType>();
		New("/gaemstone/Doc/Relation").Build().CreateLookup<Doc.Relation>();
		LookupByPathOrThrow("/flecs/core/Module"   ).CreateLookup<Flecs.Core.Module>();
		LookupByPathOrThrow("/flecs/core/Component").CreateLookup<Flecs.Core.Component>();
		LookupByPathOrThrow("/flecs/core/Tag"      ).CreateLookup<Flecs.Core.Tag>();

		// Register built-in (static) modules, which
		// are defined in the "gaemstone.Flecs" namespace.
		Modules.RegisterAll(GetType().Assembly.GetTypes()
			.Where(t => t.IsAbstract && t.IsSealed));

		Modules.Register<Doc>();

		// Create "Game" entity to store global state.
		New("/Game").Symbol("Game").Build()
			.CreateLookup<Game>().Add<Game>();
	}
}