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

namespace MaterialUI
{
    [ExecuteInEditMode]
    public class ToastManager : MonoBehaviour
    {
        private static ToastManager _instance;

        public static ToastManager instance
        {
            get
            {
                if (_instance == null)
                {
                    GameObject go = new GameObject();
                    _instance = go.AddComponent<ToastManager>();
                    go.name = "ToastManager";
                }

                return _instance;
            }
        }

        static GameObject theToast;
        public static string toastText;
        public static float toastDuration;
        public static Color toastPanelColor;
        public static Color toastTextColor;
        public static int toastFontSize;
        public static Canvas parentCanvas;

        void Awake()
        {
            _instance = this;

            if (!theToast)
                InitToastSystem(GetComponentInParent<Canvas>());
        }

        void OnCreate()
        {
            if (GetComponentInParent<Canvas>())
                InitToastSystem(GetComponentInParent<Canvas>());
            else
                Debug.LogWarning("Please put ToastManager under a canvas!");
        }

        public static void InitToastSystem(Canvas theCanvas)
        {
            theToast = Resources.Load("Toast", typeof(GameObject)) as GameObject;
            parentCanvas = theCanvas;
        }

        public void InstanceShow(string content)
        {
            Show(content);
        }

        public static void Show(string content)
        {
            toastText = content;
            toastDuration = 2f;
            toastPanelColor = Color.white;
            toastTextColor = Color.black;
            toastFontSize = 16;
            Instantiate(theToast);
        }

        public static void Show(string content, float duration)
        {
            toastText = content;
            toastDuration = duration;
            toastPanelColor = Color.white;
            toastTextColor = Color.black;
            toastFontSize = 16;
            Instantiate(theToast);
        }

        public static void Show(string content, float duration, Color panelColor, Color textColor, int fontSize)
        {
            toastText = content;
            toastDuration = duration;
            toastPanelColor = panelColor;
            toastTextColor = textColor;
            toastFontSize = fontSize;
            Instantiate(theToast);
        }
    }
}