using CW.Common;
using PaintCore;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;

namespace game
{
    [RequireComponent(typeof(CwHitPointers))]
    public class BrushPointerTouch : CwPointer
    {
        /// <summary>If you want the paint to appear above the finger, then you can set this number to something positive.</summary>
		public Vector2 Offset { set { offset = value; } get { return offset; } }
        [SerializeField] private Vector2 offset = Vector2.zero;

        protected virtual void Update()
        {
            CwInputManager.Finger finger;

            bool isFollowing = false;
            Vector2 screenPosition = Vector2.zero;

            for (var i = 0; i < CwInput.GetTouchCount(); i++)
            {
                int index;
                Vector2 position;
                float pressure;
                bool set;

                if (EventSystem.current == null) return;

                if (EventSystem.current.IsPointerOverGameObject()) return;

                CwInput.GetTouch(i, out index, out position, out pressure, out set);

                position += offset * CwInputManager.ScaleFactor;

                var down = GetFinger(index, position, pressure, set, out finger);

                cachedHitPointers.HandleFingerUpdate(finger, down, set == false);

                screenPosition = position;
                isFollowing = true;

                if (set == false)
                {
                    TryNullFinger(index);
                }
            }

            if (isFollowing) FishingYachtAct.Publish<EventWashingGestureFollowPositionData>(new EventWashingGestureFollowPositionData(screenPosition, true));
            else FishingYachtAct.Publish<EventWashingGestureFollowPositionData>(new EventWashingGestureFollowPositionData(screenPosition, false));
        }
    }
}