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

using AlmostEngine.Screenshot;

namespace AlmostEngine.Examples
{
		public class MessageCanvas : MonoBehaviour
		{
				public RectTransform m_MessagePanel;
				public GameObject m_MessagePrefab;
				public float m_DisplayTime = 5f;

				List<GameObject> m_Messages = new List<GameObject> ();

				void OnEnable ()
				{
						Clear ();

						ScreenshotTaker.onResolutionExportSuccessDelegate -= ExportSuccessCallback;
						ScreenshotTaker.onResolutionExportSuccessDelegate += ExportSuccessCallback;

						ScreenshotTaker.onResolutionExportFailureDelegate -= ExportFailureCallback;
						ScreenshotTaker.onResolutionExportFailureDelegate += ExportFailureCallback;
				}

				public void ExportSuccessCallback (ScreenshotResolution resolution)
				{
						DisplayMessage ("Screenshot created : " + resolution.m_FileName);
				}

				public void ExportFailureCallback (ScreenshotResolution resolution)
				{
						DisplayMessage ("FAILED to create : " + resolution.m_FileName);
				}


				void Clear ()
				{
						StopAllCoroutines ();
						//foreach (GameObject o in m_Messages) {
						//		StartCoroutine (DestroyMessageCoroutine (o));
						//}
				}

				public void DisplayMessage (string text)
				{
						//GameObject message = (GameObject)GameObject.Instantiate (m_MessagePrefab);
						//message.transform.SetParent (m_MessagePanel.transform);
						//message.transform.localScale = Vector3.one;
						//message.GetComponent<Text> ().text = text;
						//m_Messages.Add (message);
					//	StartCoroutine (DestroyMessageCoroutine (message));
				}

				IEnumerator DestroyMessageCoroutine (GameObject message)
				{
						yield return new WaitForSeconds (m_DisplayTime);
						m_Messages.Remove (message);
						DestroyImmediate (message);
				}
		}
}