using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.InputSystem;
using BITKit;
using BITKit.Entities;
using KinematicCharacterController;
using BITKit.StateMachine;
using Unity.Mathematics;

namespace BITFALL.Entites
{
    public partial class EntityKinematicMovement : EntityPlayerComponent, IHealthCallback, IEntityMovement
    {
        [Header(Constant.Header.Settings)]
        public float moveSpeed = 2.5f;
        [Header(Constant.Header.Components)]
        public KinematicCharacterMotor motor;
        [Header(Constant.Header.Reference)]
        [SerializeReference, SubclassSelector] public References _velocity;
        [SerializeReference, SubclassSelector] public References _speed;
        [SerializeReference, SubclassSelector] public References _vertical;
        [SerializeReference, SubclassSelector] public References _horizontal;
        [SerializeReference, SubclassSelector] public References _MoveHorizontal;
        [SerializeReference, SubclassSelector] public References _MoveVertical;
        [SerializeReference, SubclassSelector] public References _sqrMagnitude;
        [SerializeReference, SubclassSelector] public References _direction;
        [SerializeReference, SubclassSelector] public References _rootVelocity;
        [SerializeReference, SubclassSelector] public References _jump;
        [SerializeReference, SubclassSelector] public References _isGrounded;
        [SerializeReference, SubclassSelector] public References _isRunning;
        [SerializeReference, SubclassSelector] public References _isSprint;
        [SerializeReference, SubclassSelector] public References _isSliding;
        [SerializeReference, SubclassSelector] public References _isProneing;
        [SerializeReference, SubclassSelector] public References _isCrouched;
        [SerializeReference, SubclassSelector] public References _cameraPosition;
        [SerializeReference, SubclassSelector] public References _setLookAt;
        [SerializeReference, SubclassSelector] public References _cameraRotation;
        [SerializeReference, SubclassSelector] public References _lookRotation;
        [SerializeReference, SubclassSelector] public References _cancel;
        [SerializeReference, SubclassSelector] public References _ads;
        [SerializeReference, SubclassSelector] public References _angularVelocity;
        [Header(Constant.Header.State)]
        public ExpectState<bool> runState;
        public ExpectState<bool> sprintState;
        public ExpectState<bool> crouchState;
        public ExpectState<bool> groundState;
        public ExpectState<bool> jumpState;
        public ExpectState<bool> vaultState;
        [Header(Constant.Header.Gameobjects)]
        public Transform cameraRoot;
        public List<Collider> ignoreColliders = new();
        [Header(Constant.Header.InternalVariables)]
        public Vector3 moveInput;
        public Vector3 lookInput;
        public Vector3 matchTargetPosition;
        public float currentGravity;
        IStateMachine<IKinematicMovementState> stateMachine => this as IStateMachine<IKinematicMovementState>;
        public float _moveSpeed => (runState.being, sprintState.being, crouchState.being) switch
        {
            (_, _, true) => 1,
            (true, false, _) => moveSpeed * 2f,
            (_, true, false) => moveSpeed * 3f,
            _ => moveSpeed,
        };
        public override void Initialize(IEntity entity)
        {
            base.Initialize(entity);
            entity.Set<IEntityMovement>(this);
        }
        public override void OnAwake()
        {
            lookInput = MathV.TransientRotationAxis(transform.eulerAngles);
        }
        public override void OnStart()
        {
            foreach (var state in characterStates)
            {
                StateDictonary.Add(state.GetType(), state);
            }
            KinematicCharacterSystem.EnsureCreation();
            motor.CharacterController = this;
            KinematicCharacterSystem.CharacterMotors.Add(motor);

            entity.AddListener<IMovementCancelAction>(CancelMovement);
        }
        public override void OnPlayerInitialized()
        {
            if (isLocalPlayer)
                stateMachine.TransitionState(characterStates[0]);
        }
        public override void OnFixedUpdate(float deltaTime)
        {
            if (isSpawned)
            {
                /* client.SendRT(nameof(EntityProxyMovement.RpcSyncMovement)
                , entity.Id,
                (Net.Vector3)motor.Velocity,
                (Net.Vector3)motor.TransientPosition); */
                // FGame.ClientAllRpc(
                //     nameof(IEntityMovement.SyncMovement),
                //     entity.Id,
                //     (float3)motor.Velocity,
                //     (float3)motor.TransientPosition,
                //     (quaternion)motor.TransientRotation,
                //     motor.GroundingStatus.FoundAnyGround
                //     );
            }
        }
        public override void OnUpdate(float deltaTime)
        {
            if (isLocalPlayer)
            {
                var offset = new Vector3(0, 1.2f * (crouchState.being ? 0.64f : 1), 0.2f);
                var lerp = Vector3.Lerp(
                    cameraRoot.localPosition,
                    offset,
                    5 * deltaTime
                    );
                cameraRoot.localPosition = lerp;
            }

        }
        public override void OnLateUpdate(float deltaTime)
        {
            if (isLocalPlayer)
            {
                var rotation = Quaternion.Euler(lookInput);


                cameraRoot.rotation = rotation;

                entity.Set(_cameraRotation, rotation);
            }
        }
        public override void OnDestroyComponent()
        {
            KinematicCharacterSystem.CharacterMotors.Remove(motor);
        }

        void IHealthCallback.OnSetAlive(bool alive)
        {
        }

        void IHealthCallback.OnSetHP(int hp)
        {
        }

        void CancelMovement(IMovementCancelAction action)
        {
            stateMachine?.CurrentState?.OnCancelMovement(action);
        }

        public Vector3 Velocity { get; set; }
        public Vector3 GroundVelocity { get; set; }
        public bool IsGrounded { get; set; }

        void IEntityMovement.SyncMovement(Vector3 velocity, Vector3 position, Quaternion rotation, bool isGrounded)
        {

        }

        public void Movement(Vector3 relativeVector)
        {
            throw new NotImplementedException();
        }

        public void Movement(InputAction.CallbackContext context)
        {
            throw new NotImplementedException();
        }

        public IDictionary<Type, IKinematicMovementState> StateDictionary { get; set; }
    }
}