using RobocraftX.Common;
using RobocraftX.DOTS;
using Svelto.ECS;
using Svelto.ECS.EntityStructs;
using Unity.Mathematics;
using UnityEngine;

using TechbloxModdingAPI.Engines;
using TechbloxModdingAPI.Utility;

namespace TechbloxModdingAPI.Blocks.Engines
{
    /// <summary>
    /// Engine which executes block movement actions
    /// </summary>
    public class RotationEngine : IApiEngine
    {
        public string Name { get; } = "TechbloxModdingAPIRotationGameEngine";

        public EntitiesDB entitiesDB { set; private get; }

		public bool isRemovable => false;

		public bool IsInGame = false;

        public void Dispose()
        {
            IsInGame = false;
        }

        public void Ready()
        {
            IsInGame = true;
        }

        // implementations for Rotation static class

        internal float3 RotateBlock(Block block, Vector3 vector)
        {
            ref RotationEntityStruct rotStruct = ref this.entitiesDB.QueryEntityOrDefault<RotationEntityStruct>(block);
            ref GridRotationStruct gridStruct = ref this.entitiesDB.QueryEntityOrDefault<GridRotationStruct>(block);
            ref LocalTransformEntityStruct transStruct = ref this.entitiesDB.QueryEntityOrDefault<LocalTransformEntityStruct>(block);
            var phyStruct = this.entitiesDB.QueryEntityOptional<DOTSPhysicsEntityStruct>(block);
            // main (persistent) rotation
            Quaternion newRotation = rotStruct.rotation;
            newRotation.eulerAngles = vector;
            rotStruct.rotation = newRotation;
            // placement grid rotation
            gridStruct.rotation = newRotation;
            // rendered rotation
            transStruct.rotation = newRotation;
            // collision rotation
            if (phyStruct)
            { //It exists
                FullGameFields._physicsWorld.EntityManager.SetComponentData(phyStruct.Get().dotsEntity,
                    new Unity.Transforms.Rotation
                    {
                        Value = rotStruct.rotation
                    });
            }

            // TODO: Connections probably need to be assigned (maybe)
            // They are assigned during machine processing anyway
            entitiesDB.QueryEntityOrDefault<GridConnectionsEntityStruct>(block).areConnectionsAssigned = false;
            return ((Quaternion)rotStruct.rotation).eulerAngles;

        }

        internal float3 GetRotation(Block block)
        {
            ref RotationEntityStruct rotStruct = ref entitiesDB.QueryEntityOrDefault<RotationEntityStruct>(block);
            return ((Quaternion) rotStruct.rotation).eulerAngles;
        }
    }
}