using System;
using System.Collections.Generic;
using System.Diagnostics;
using SUISS.Core;
using UnityEngine;
using UnityEngine.UI;

public sealed class OverlayManager : SingletonMonobehaviour<OverlayManager>
{
	//[DebuggerBrowsable(DebuggerBrowsableState.Never)]
	public event OverlayManager.InteractionEnabledChangedEventHandler InteractionEnabledChangedEvent;

	private void FireInteractionEnabledChangedEvent(bool interactionEnabled)
	{
		if (this.InteractionEnabledChangedEvent != null)
		{
			this.InteractionEnabledChangedEvent(interactionEnabled);
		}
	}

	public GameObject ButtonsPrefab
	{
		get
		{
			return this._buttonsPrefab;
		}
	}

	public GameObject ProgressPrefab
	{
		get
		{
			return this._progressPrefab;
		}
	}

	public GameObject TitlePrefab
	{
		get
		{
			return this._titlePrefab;
		}
	}

	public bool InteractionDisabled
	{
		get
		{
			return this._disableInteractionRequestSources.Count > 0;
		}
	}

	protected override void Awake()
	{
		if (this._overlayCanvas == null)
		{
			this._overlayCanvas = base.gameObject.GetComponent<RectTransform>();
		}
		base.Awake();
	}

	public void DisableInteractionRequest(object source)
	{
		this.DisableInteraction();
		this._disableInteractionRequestSources.Add(source);
	}

	public void EnableInteractionRequest(object source)
	{
		this._disableInteractionRequestSources.Remove(source);
		if (this._disableInteractionRequestSources.Count == 0)
		{
			this.EnableInteraction();
		}
	}

	public GameObject CreateOverlay(GameObject linkedTo, GameObject overlayPrefab)
	{
		OverlayLink overlayLink = linkedTo.GetComponent<OverlayLink>();
		if (overlayLink == null)
		{
			overlayLink = linkedTo.AddComponent<OverlayLink>();
			GameObject gameObject = new GameObject("Overlay(" + linkedTo.name + ")");
			RectTransform rectTransform = gameObject.AddComponent<RectTransform>();
			rectTransform.SetParent(this._overlayCanvas, false);
			overlayLink.OverlayParent = rectTransform;
		}
		else
		{
			overlayLink.UpdateOverlayPosition();
		}
		GameObject gameObject2 = UnityEngine.Object.Instantiate<GameObject>(overlayPrefab);
		gameObject2.transform.SetParent(overlayLink.OverlayParent, false);
		RectTransform component = gameObject2.GetComponent<RectTransform>();
		if (component == null)
		{
			UnityEngine.Debug.LogError(string.Format("OverlayManager was unable to find '{0}' component in '{1}' prefab!", typeof(RectTransform).Name, overlayPrefab.name));
			UnityEngine.Object.Destroy(gameObject2);
			return null;
		}
		return gameObject2;
	}

	public T CreateOverlay<T>(GameObject linkedTo, GameObject overlayPrefab) where T : MonoBehaviour
	{
		GameObject gameObject = this.CreateOverlay(linkedTo, overlayPrefab);
		T component = gameObject.GetComponent<T>();
		if (component == null)
		{
			UnityEngine.Debug.LogError(string.Format("Overlay prefab '{0}' does not have a '{1}' component ", overlayPrefab.name, typeof(T).Name));
			return (T)((object)null);
		}
		return component;
	}

	public Pling CreatePling(Pling plingPrefab, Vector3 position)
	{
		return UnityEngine.Object.Instantiate<Pling>(plingPrefab, position, Quaternion.identity, this._overlayCanvas);
	}

	private void EnableInteraction()
	{
		this._raycaster.enabled = true;
		this.FireInteractionEnabledChangedEvent(true);
	}

	private void DisableInteraction()
	{
		this._raycaster.enabled = false;
		this.FireInteractionEnabledChangedEvent(false);
	}

	[SerializeField]
	private RectTransform _overlayCanvas;

	[SerializeField]
	private GraphicRaycaster _raycaster;

	[SerializeField]
	private GameObject _buttonsPrefab;

	[SerializeField]
	private GameObject _progressPrefab;

	[SerializeField]
	private GameObject _titlePrefab;

	private readonly List<object> _disableInteractionRequestSources = new List<object>();

	public delegate void InteractionEnabledChangedEventHandler(bool interactionEnabled);
}