// Copyright (c) Pixel Crushers. All rights reserved.

using UnityEngine;
using System.Collections.Generic;

namespace PixelCrushers.QuestMachine.Wrappers
{
    /// <summary>
    /// This wrapper class keeps references intact if you switch between the 
    /// compiled assembly and source code versions of the original class.
    /// </summary>
    [AddComponentMenu("Pixel Crushers/Quest Machine/UI/Quest Alert Displayer")]
    public class QuestAlertDisplayer : PixelCrushers.QuestMachine.QuestAlertDisplayer
    {
        [SerializeField] private bool m_queuedAlerts;
        [SerializeField] private UnityUIQuestAlertUI m_unityUiQuestAlertUi;
        private Queue<QueuedAlert> m_alertsQueue = new Queue<QueuedAlert>();


        public override void OnMessage(MessageArgs messageArgs)
        {
            if (!m_queuedAlerts)
            {
                base.OnMessage(messageArgs);
            }
            else
            {
                List<QuestContent> uiContent = (messageArgs.values != null && messageArgs.values.Length > 0)
                    ? (messageArgs.values[0] as List<QuestContent>)
                    : null;
                m_alertsQueue.Enqueue(new QueuedAlert(uiContent, messageArgs.parameter));
            }
        }

        private void Update()
        {
            if (!m_queuedAlerts)
            {
                return;
            }

            if (!m_unityUiQuestAlertUi.isVisible && m_alertsQueue.Count > 0)
            {
                var alert = m_alertsQueue.Dequeue();
                questAlertUI.ShowAlert(alert.parameter, alert.uiContent);
            }
        }
    }

    public class QueuedAlert
    {
        public string parameter;
        public List<QuestContent> uiContent;

        public QueuedAlert(List<QuestContent> uiContent, string parameter)
        {
            this.uiContent = uiContent;
            this.parameter = parameter;
        }
    }
}