using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UIElements;
using UnityEngine.Events;
namespace BITKit.UX
{
    public class UXScreenJoyStick : UXDrag
    {
        [Header(Constant.Header.Settings)]
        [SerializeField] private float range;
        [SerializeField] private  bool resetOnUp;
        [SerializeField] private  bool updateDelta;
        [SerializeField] private bool raw;
        [Header(Constant.Header.Events)]
        [SerializeField] private UnityEvent<Vector2> onDelta;
        [Header(Constant.Header.InternalVariables)]
        [SerializeField,ReadOnly] private  Vector2 delta;

        public override void OnStart()
        {
            base.OnStart();
            visualElement.RegisterCallback<PointerMoveEvent>(OnPointerMove);
        }

        private void OnPointerMove(PointerMoveEvent evt)
        {
            if (raw&& isDraging)
            {
                onDelta.Invoke(evt.deltaPosition);
            }
        }

        protected override Vector2 GetProcessDelta(Vector2 delta)
        {
            delta = Vector2.ClampMagnitude(delta, range);
            return delta;
        }
        protected override void PointerUpEventHandler(PointerUpEvent evt)
        {
            base.PointerUpEventHandler(evt);
            if (resetOnUp)
            {
                visualElement.transform.position = default;
                onDelta.Invoke(this.delta = default);
            }
        }
        protected override void OnDelta(Vector2 delta)
        {
            delta.y = -delta.y;
            if (updateDelta is false)
                onDelta.Invoke(delta);
            this.delta = delta;
        }
        void Update()
        {
            if (updateDelta && delta.sqrMagnitude is not 0)
            {
                onDelta.Invoke(delta);
            }
        }
    }
}