using System;
using UnityEngine;

namespace MyUtility
{
	public class UtilityClickTouchDetector : MonoBehaviour
	{
		private enum ECursorState
		{
			DOWN_FRAME = 0,
			UP_FRAME = 1,
			HELD = 2
		}

		public Action m_onClick;

		private Collider m_collider;

		private Camera m_camera;

		private bool m_isMouseDown;

		private bool m_isHeldDown;

		public Collider ColliderInstance
		{
			get
			{
				return m_collider;
			}
			set
			{
				m_collider = value;
			}
		}

		public Camera CameraInstance
		{
			get
			{
				return m_camera;
			}
			set
			{
				m_camera = value;
			}
		}

		private void Start()
		{
			if (m_collider == null)
			{
				m_collider = GetComponent<Collider>();
				if (m_collider == null)
				{
					Debug.LogError("UtilityClickTouchDetector: could not find a collider!");
					base.enabled = false;
				}
			}
			if (m_camera == null)
			{
				m_camera = Camera.main;
				if (m_camera == null)
				{
					Debug.LogError("UtilityClickTouchDetector: could not find a camera!");
					base.enabled = false;
				}
			}
		}

		private void Update()
		{
			if (m_collider != null && m_camera != null)
			{
				bool mouseButton = Input.GetMouseButton(0);
				if (mouseButton || m_isMouseDown)
				{
					ECursorState p_state = ((!mouseButton) ? ECursorState.UP_FRAME : (m_isMouseDown ? ECursorState.HELD : ECursorState.DOWN_FRAME));
					RaycastCursor(Input.mousePosition, p_state);
					m_isMouseDown = mouseButton;
				}
				Touch[] touches = Input.touches;
				for (int i = 0; i < touches.Length; i++)
				{
					ECursorState p_state2;
					switch (touches[i].phase)
					{
					case TouchPhase.Began:
						p_state2 = ECursorState.DOWN_FRAME;
						break;
					case TouchPhase.Ended:
						p_state2 = ECursorState.UP_FRAME;
						break;
					case TouchPhase.Moved:
					case TouchPhase.Stationary:
						p_state2 = ECursorState.HELD;
						break;
					default:
						continue;
					}
					RaycastCursor(touches[i].position, p_state2);
				}
			}
			else if (m_collider == null)
			{
				Debug.LogError("UtilityClickTouchDetector: Update: lost reference to collider!");
				base.enabled = false;
			}
			else
			{
				Debug.LogError("UtilityClickTouchDetector: Update: lost reference to camera!");
				base.enabled = false;
			}
		}

		private void OnDestroy()
		{
			m_onClick = null;
		}

		private void RaycastCursor(Vector3 p_screenPos, ECursorState p_state)
		{
			RaycastHit hitInfo;
			if (m_collider.Raycast(m_camera.ScreenPointToRay(p_screenPos), out hitInfo, float.MaxValue))
			{
				if (m_isHeldDown)
				{
					switch (p_state)
					{
					case ECursorState.DOWN_FRAME:
						m_isHeldDown = true;
						break;
					case ECursorState.UP_FRAME:
						m_isHeldDown = false;
						if (m_onClick != null)
						{
							m_onClick();
						}
						break;
					}
				}
				else if (p_state == ECursorState.DOWN_FRAME)
				{
					m_isHeldDown = true;
				}
			}
			else if (m_isHeldDown && (p_state == ECursorState.DOWN_FRAME || p_state == ECursorState.UP_FRAME))
			{
				m_isHeldDown = false;
			}
		}
	}
}