using System;

using RobocraftX.Common;
using Svelto.ECS;

using GamecraftModdingAPI.Engines;
using GamecraftModdingAPI.Utility;

namespace GamecraftModdingAPI.Blocks
{
    public class BlockEventsEngine : IReactionaryEngine<DBEntityStruct>
    {
        public event EventHandler<BlockPlacedRemovedEventArgs> Placed;
        public event EventHandler<BlockPlacedRemovedEventArgs> Removed;

        public BlockEventsEngine()
        {
            //Console.WriteLine("Creating BlockEventsEngine\n" + Environment.StackTrace);
        }

        public void Ready()
        {
            //Console.WriteLine("BlockEventsEngine registered");
        }

        public EntitiesDB entitiesDB { get; set; }

        public void Dispose()
        {
        }

        public string Name { get; } = "GamecraftModdingAPIBlockEventsEngine";
        public bool isRemovable { get; } = false;

        private bool shouldAddRemove;
        public void Add(ref DBEntityStruct entityComponent, EGID egid)
        {
            if (!(shouldAddRemove = !shouldAddRemove))
                return;
            ExceptionUtil.InvokeEvent(Placed, this,
                new BlockPlacedRemovedEventArgs {ID = egid, Type = (BlockIDs) entityComponent.DBID});
        }

        public void Remove(ref DBEntityStruct entityComponent, EGID egid)
        {
            if (!(shouldAddRemove = !shouldAddRemove))
                return;
            ExceptionUtil.InvokeEvent(Removed, this,
                new BlockPlacedRemovedEventArgs {ID = egid, Type = (BlockIDs) entityComponent.DBID});
        }
    }

    /*[HarmonyPatch]
    public static class TestPatch
    {
        public static void Postfix(FasterDictionary<RefWrapper<Type>, FasterList<IEngine>> engines,
            ExclusiveGroupStruct? previousGroup, in PlatformProfiler profiler, EGID egid)
        {
            if (!engines.TryGetValue(new RefWrapper<Type>(TypeSafeDictionary<TValue>._type), out result))
                return;
        }
        public static MethodBase TargetMethod()
        {
            return AccessTools.Method("Svelto.ECS.Internal.TypeSafeDictionary:AddEntityComponentToEngines");
        }
    }*/
    
    /*[HarmonyPatch]
    public static class TestPatch
    {
        public static void Postfix(EGID basePartEGID)
        {
            Console.WriteLine("Patched Add method: " + basePartEGID);
        }
        public static MethodBase TargetMethod()
        {
            return AccessTools.Method("RobocraftX.CR.MachineEditing.BuildBlockAdditionalPartEngine:Add");
        }
    }*/

    public struct BlockPlacedRemovedEventArgs
    {
        public EGID ID;
        public BlockIDs Type;
    }
}