// ***********************************************************************
// Assembly         : Unity
// Author           : Kimch
// Created          : 2019-06-28
// Description      :
// Last Modified By : 
// Last Modified On : 
// ***********************************************************************
// <copyright file= "StoryGroup" company="Kunpo"></copyright>
// <summary></summary>
// ***********************************************************************
namespace G
{
	using System.Collections;
	using System.Collections.Generic;
	using UnityEngine;

	/// <summary>
	/// 剧情
	/// </summary>
	public class StoryGroup
	{
		public enum GroupState
		{
			None,
			Start,
			Running,
			Completed,
		}

		/// <summary>
		/// 
		/// </summary>
		private ItemStoryGroup _groupItem;
		/// <summary>
		/// 
		/// </summary>
		private readonly List<StoryStage> _selfStages = new List<StoryStage>();

		private StoryStage _currStage;
		private GroupState _currState;
		private int _currStep;
		private int _maxStep;

		private Callback _callback;

		/// <summary>
		/// 
		/// </summary>
		public int type => _groupItem.type;

		/// <summary>
		/// 
		/// </summary>
		public StoryStage currStage
		{
			get { return _currStage; }
		}

		public StoryGroup(ItemStoryGroup groupItem)
		{
			_groupItem = groupItem;
			var stages = _groupItem.stages;
			if (stages != null && stages.Length > 0)
			{
				for (int i = 0; i < stages.Length; i++)
				{
					_selfStages.Add(new StoryStage(this, stages[i], i + 1));
				}
			}
		}

		/// <summary>
		/// 
		/// </summary>
		public void Start(Callback callback)
		{
			_callback = callback;
			if (_selfStages.Count > 0)
			{
				_currStep = 1;
				_maxStep = _selfStages.Count + 1;
				_currState = GroupState.Start;
				_currStage = _selfStages[0];

				GlobalNotifier.PostNotification(GlobalDefine.EVENT_STORY_START, _currStage, this.type.ToString());
				if (type == 0)
				{
					UI.StoryWindow.ShowStory(_currStage.action);
				}
				//else if (type == 1)
				//{
				//	UI.TravelWindow.ShowStory(_currStage.action);
				//}
				_currStage.Start();
			}
		}

		public bool CanTrigger()
		{
			return _groupItem.type == 1 || _currState != GroupState.Completed;
		}

		/// <summary>
		/// 
		/// </summary>
		/// <returns></returns>
		public bool IsCompleted()
		{
			return _currState == GroupState.Completed;
		}

		/// <summary>
		/// 
		/// </summary>
		public bool JumpToNext()
		{
			if (_currStage.nextStep > 0)
			{
				_currStep = _currStage.nextStep;
			}
			else
			{
				_currStep++;
			}

			if (_currStep < _maxStep)
			{
				_currStage = _selfStages[_currStep - 1];
				_currStage.Start();
				return true;
			}
			else
			{
				_currState = GroupState.Completed;
				GlobalNotifier.PostNotification(GlobalDefine.EVENT_STORY_FINISH, null, this.type.ToString());
				_callback?.Invoke();
				_callback = null;
				return false;
			}
		}

		/// <summary>
		/// 
		/// </summary>
		public void JumpToEnd()
		{
			_currStage = _selfStages[_selfStages.Count - 1];
			_currStep = _currStage.step;
			_currStage.Start();
		}

		/// <summary>
		/// 指定步数
		/// </summary>
		/// <param name="step"></param>
		public void JumpToStep(int step)
		{
			_currStage = _selfStages[step - 1];
			_currStep = _currStage.step;
			_currStage.Start();
		}
	}
}