using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.Events;
using UnityEngine.UI;

namespace UIWidgets
{
	[RequireComponent(typeof(RectTransform))]
	public class ModalHelper : MonoBehaviour, ITemplatable, IPointerClickHandler, IEventSystemHandler
	{
		private bool isTemplate = true;

		private UnityEvent OnClick = new UnityEvent();

		private static Templates<ModalHelper> Templates = new Templates<ModalHelper>();

		private static Dictionary<int, ModalHelper> used = new Dictionary<int, ModalHelper>();

		private static string key = "ModalTemplate";

		public bool IsTemplate
		{
			get
			{
				return isTemplate;
			}
			set
			{
				isTemplate = value;
			}
		}

		public string TemplateName { get; set; }

		private void OnDestroy()
		{
			Templates.Delete(key);
		}

		public void OnPointerClick(PointerEventData eventData)
		{
			OnClick.Invoke();
		}

		public static int Open(MonoBehaviour parent, Sprite sprite = null, Color? color = null, UnityAction onClick = null)
		{
			if (!Templates.Exists(key))
			{
				Templates.FindTemplates();
				CreateTemplate();
			}
			ModalHelper modalHelper = Templates.Instance(key);
			modalHelper.transform.SetParent(Utilites.FindCanvas(parent.transform), false);
			modalHelper.gameObject.SetActive(true);
			modalHelper.transform.SetAsLastSibling();
			RectTransform rectTransform = modalHelper.transform as RectTransform;
			rectTransform.sizeDelta = new Vector2(0f, 0f);
			rectTransform.anchorMin = new Vector2(0f, 0f);
			rectTransform.anchorMax = new Vector2(1f, 1f);
			rectTransform.anchoredPosition = new Vector2(0f, 0f);
			Image component = modalHelper.GetComponent<Image>();
			if (sprite != null)
			{
				component.sprite = sprite;
			}
			if (color.HasValue)
			{
				component.color = color.Value;
			}
			modalHelper.OnClick.RemoveAllListeners();
			if (onClick != null)
			{
				modalHelper.OnClick.AddListener(onClick);
			}
			used.Add(modalHelper.GetInstanceID(), modalHelper);
			return modalHelper.GetInstanceID();
		}

		private static void CreateTemplate()
		{
			GameObject gameObject = new GameObject(key);
			ModalHelper template = gameObject.AddComponent<ModalHelper>();
			gameObject.AddComponent<Image>();
			Templates.Add(key, template);
		}

		public static void Close(int index)
		{
			if (used != null && used.ContainsKey(index))
			{
				used[index].OnClick.RemoveAllListeners();
				Templates.ToCache(used[index]);
				used.Remove(index);
			}
		}
	}
}