gaemstone/src/gaemstone/Doc+Extensions.cs

using gaemstone.ECS;
using gaemstone.ECS.Utility;
using static flecs_hub.flecs;

namespace gaemstone;

public static unsafe class DocExtensions
{
	private static Entity<TContext> Set<TContext, T>(Entity<TContext> entity, string? value)
	{
		var id = entity.World.Pair<flecs.doc.Description, T>();

		if (value != null) {
			var str  = GlobalHeapAllocator.Instance.AllocateCString(value);
			var desc = new flecs.doc.Description { Value = (void*)(nint)str };
			entity.Set(id, desc);
		} else {
			entity.Remove(id);
		}

		return entity;
	}

	public static string? GetDocName<TContext>(this Entity<TContext> entity, bool fallbackToEntityName = true)
		=> fallbackToEntityName || entity.Has<flecs.doc.Description, flecs.core.Name>()
			? ecs_doc_get_name(entity.World, entity).FlecsToString() : null;
	public static Entity<TContext> SetDocName<TContext>(this Entity<TContext> entity, string? value)
		=> Set<TContext, flecs.core.Name>(entity, value);

	public static string? GetDocBrief<TContext>(this Entity<TContext> entity)
		=> ecs_doc_get_brief(entity.World, entity).FlecsToString()!;
	public static Entity<TContext> SetDocBrief<TContext>(this Entity<TContext> entity, string? value)
		=> Set<TContext, flecs.doc.Brief>(entity, value);

	public static string? GetDocDetail<TContext>(this Entity<TContext> entity)
		=> ecs_doc_get_detail(entity.World, entity).FlecsToString()!;
	public static Entity<TContext> SetDocDetail<TContext>(this Entity<TContext> entity, string? value)
		=> Set<TContext, flecs.doc.Detail>(entity, value);

	public static string? GetDocLink<TContext>(this Entity<TContext> entity)
		=> ecs_doc_get_link(entity.World, entity).FlecsToString()!;
	public static Entity<TContext> SetDocLink<TContext>(this Entity<TContext> entity, string? value)
		=> Set<TContext, flecs.doc.Link>(entity, value);

	public static string? GetDocColor<TContext>(this Entity<TContext> entity)
		=> ecs_doc_get_color(entity.World, entity).FlecsToString()!;
	public static Entity<TContext> SetDocColor<TContext>(this Entity<TContext> entity, string? value)
		=> Set<TContext, flecs.doc.Color>(entity, value);
}