#nullable enable
using Content.Shared.GameObjects.Components.Atmos;
using JetBrains.Annotations;
using Robust.Client.GameObjects;
using Robust.Client.Graphics;
using Robust.Client.ResourceManagement;
using Robust.Shared.GameObjects;
using Robust.Shared.IoC;
using Robust.Shared.Log;
using Robust.Shared.Serialization;
using YamlDotNet.RepresentationModel;

namespace Content.Client.GameObjects.Components.Atmos
{
    /// <summary>
    ///     Sets the state of the sprite based on what shape of pipe it is.
    /// </summary>
    [UsedImplicitly]
    public class PipeVisualizer : AppearanceVisualizer
    {
        private RSI? _pipeRSI;

        public override void LoadData(YamlMappingNode node)
        {
            base.LoadData(node);
            var serializer = YamlObjectSerializer.NewReader(node);
    
            var rsiString = SharedSpriteComponent.TextureRoot / serializer.ReadDataField("rsi", "Constructible/Atmos/pipe.rsi");
            var resourceCache = IoCManager.Resolve<IResourceCache>();
            if (resourceCache.TryGetResource(rsiString, out RSIResource? rsi))
                _pipeRSI = rsi.RSI;
            else
                Logger.Error($"{nameof(PipeVisualizer)} could not load to load RSI {rsiString}.");
        }

        public override void InitializeEntity(IEntity entity)
        {
            base.InitializeEntity(entity);
            if (!entity.TryGetComponent<ISpriteComponent>(out var sprite)) return;
            sprite.LayerMapReserveBlank(Layer.PipeBase);
            var pipeBaseLayer = sprite.LayerMapGet(Layer.PipeBase);

            if (_pipeRSI != null)
                sprite.LayerSetRSI(pipeBaseLayer, _pipeRSI);

            sprite.LayerSetVisible(pipeBaseLayer, true);
        }

        public override void OnChangeData(AppearanceComponent component)
        {
            base.OnChangeData(component);
            if (!component.Owner.TryGetComponent<ISpriteComponent>(out var sprite)) return;
            if (!component.TryGetData(PipeVisuals.VisualState, out PipeVisualState pipeVisualState)) return;
            var pipeBase = sprite.LayerMapGet(Layer.PipeBase);
            var pipeBaseStateId = GetPipeBaseStateId(pipeVisualState);
            sprite.LayerSetState(pipeBase, pipeBaseStateId);
        }

        private string GetPipeBaseStateId(PipeVisualState pipeVisualState)
        {
            var stateId = "pipe";
            stateId += pipeVisualState.PipeShape.ToString();
            return stateId;
        }

        private enum Layer : byte
        {
            PipeBase,
        }
    }
}