using System;
using System.Collections.Generic;
using UnityEngine;

namespace TG_TouchGesture
{
	public class TG_TouchGestures : MonoBehaviour
	{
		private List<TG_TouchGestureBase> m_touchGestures = new List<TG_TouchGestureBase>();

		private static TG_TouchGestures s_instance;

		public EventHandler<TG_TouchGestureEventArgs> OnGestureDetected;

		public static bool IsInstanceSet
		{
			get
			{
				return s_instance != null;
			}
		}

		public static TG_TouchGestures Instance
		{
			get
			{
				if (s_instance == null)
				{
					GameObject gameObject = new GameObject("TG_TouchGestures");
					UnityEngine.Object.DontDestroyOnLoad(gameObject);
					s_instance = gameObject.AddComponent<TG_TouchGestures>();
				}
				return s_instance;
			}
		}

		public void EnableGesture(TG_ETouchGestureType p_type)
		{
			foreach (TG_TouchGestureBase touchGesture in m_touchGestures)
			{
				if (touchGesture.Type == p_type)
				{
					return;
				}
			}
			switch (p_type)
			{
			case TG_ETouchGestureType.TAP:
				m_touchGestures.Add(new TG_TouchGestureTap());
				break;
			case TG_ETouchGestureType.PRESS_1_FINGER:
				m_touchGestures.Add(new TG_TouchGesturePress(TG_ETouchGestureType.PRESS_1_FINGER, 1, 0.1f));
				break;
			case TG_ETouchGestureType.PRESS_2_FINGER:
				m_touchGestures.Add(new TG_TouchGesturePress(TG_ETouchGestureType.PRESS_2_FINGER, 2, 0f));
				break;
			case TG_ETouchGestureType.PRESS_3_FINGER:
				m_touchGestures.Add(new TG_TouchGesturePress(TG_ETouchGestureType.PRESS_3_FINGER, 3, 0f));
				break;
			case TG_ETouchGestureType.PRESS_4_FINGER:
				m_touchGestures.Add(new TG_TouchGesturePress(TG_ETouchGestureType.PRESS_4_FINGER, 4, 0f));
				break;
			case TG_ETouchGestureType.ZOOM:
				m_touchGestures.Add(new TG_TouchGestureZoom());
				break;
			default:
				Debug.LogError(string.Concat("TG_TouchGestures: EnableGesture: unknown gesture type '", p_type, "'!"));
				break;
			}
		}

		private void Start()
		{
		}

		private void Update()
		{
			if (OnGestureDetected == null)
			{
				return;
			}
			foreach (TG_TouchGestureBase touchGesture in m_touchGestures)
			{
				TG_TouchGestureEventArgs e = touchGesture.Update();
				if (e != null)
				{
					OnGestureDetected(touchGesture, e);
				}
			}
		}
	}
}