using UnityEngine;
using UnityEngine.UI;

namespace Ui.Screens
{
	public class ScreenThreshold : MonoBehaviour
	{
		
		[SerializeField] private ScrollRect _scrollbar;
		
		private float _startPosition = float.MinValue;
		
		private void OnEnable()
		{
			if (_scrollbar == null)
				return;
			_scrollbar.onValueChanged.AddListener(Call);
			ScreenContainer.DragEvent += OnDragEvent;
		}

		private void OnDisable()
		{
			if (_scrollbar == null)
				return;
			ScreenContainer.DragEvent -= OnDragEvent;
		}
		
		private void Update()
		{
			if (Input.GetMouseButtonUp(0))
			{
				_startPosition = float.MinValue;
			}
		}
		
		private void Call(Vector2 arg0)
		{
			if (_startPosition <= float.MinValue)
				_startPosition = Input.mousePosition.y;

			if (_scrollbar.vertical && !ScreenContainer.Hold && Mathf.Abs(Input.mousePosition.y - _startPosition) > 0.05f * Screen.height)
				ScreenContainer.Hold = true;
		}
		
		private void OnDragEvent(bool obj)
		{
			_scrollbar.vertical = !obj;
		}
	}
}