namespace LyraApi.Ecs;

using ExampleWorld.wit.imports.lyra.api;
using LyraApi;
using LyraApi.Asset;

public class World(IEcs.EcsWorld world)
{
    internal IEcs.EcsWorld inner = world;

    private Entity Spawn(List<IEcs.ComponentInfo> infos, params object[] comps)
    {
        byte[] bytes = comps.SelectMany(c => MarshalUtils.GetBytes(c)).ToArray();
        return new Entity(inner.Spawn(bytes, infos));
    }

    public Entity Spawn<T1>(T1 c1) where T1 : IComponent
    {
        List<IEcs.ComponentInfo> infos = [ComponentInfo.FromType<T1>().info];
        return Spawn(infos, c1);
    }

    public IEnumerable<(Entity, T1)> View<T1>() where T1 : IComponent
    {
        List<Component> comps = [Component.FromComponent<T1>()];
        List<IEcs.ComponentInfo> infos = comps.Select(c => c.GetComponentInfo().info).ToList();

        IEcs.EcsDynamicView dynamicView = inner.View(infos);
        return new ViewResult(comps, dynamicView).Get<T1>();
    }

    public T? GetResource<T>() where T : IResource
    {
        IEcs.WorldResourceResult result = inner.GetResource(Utils.ToWasmTypeId(T.TypeId));
        return (T?)T.FromWasmResult(result);
    }

    public AssetManager? GetAssetManager()
    {
        IAsset.AssetManager? assetManager = IAsset.AssetManager.FromWorld(inner);

        if (assetManager != null)
        {
            return new AssetManager(assetManager);
        }
        else
        {
            return null;
        }
    }
}