using cfg.GuideCfg;
using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

/// <summary>
/// 引导组
/// </summary>
public class GuideGroup
{
    /// <summary>
    /// 引导步骤
    /// </summary>
    private readonly LinkedList<GuideStepBase> linkGuideStep;
    /// <summary>
    /// 当前引导步骤
    /// </summary>
    private LinkedListNode<GuideStepBase> curStep;

    #region 属性
    /// <summary>
    /// 引导组id
    /// </summary>
    public int GroupId
    {
        get; private set;
    }

    /// <summary>
    /// 是否引导中
    /// </summary>
    public bool IsGuiding
    {
        get{ return curStep != null && curStep.Value.GuideState == E_GuideState.Guiding;  }
    }

    /// <summary>
    /// 是否引导完成
    /// </summary>
    public bool IsComplete
    {
        get { return curStep != null && curStep == linkGuideStep.Last && E_GuideState.Complete == curStep.Value.GuideState; }
    }

    /// <summary>
    /// 当前引导步骤
    /// </summary>
    public GuideStepBase CurStep
    {
        get { return curStep.Value; }
    }

    /// <summary>
    /// 获取下一步引导id
    /// </summary>
    public int NextGroupId
    {
        get
        {
            if (null == linkGuideStep.Last)
                return 0;

            return linkGuideStep.Last.Value.Cfg.NextId;
        }
    }
    #endregion

    public GuideGroup(int groupId, LinkedList<DataGuideCfg> linkCfg)
    {
        GroupId = groupId;
        linkGuideStep = new();

        foreach (DataGuideCfg cfg in linkCfg)
        {
            linkGuideStep.AddLast(CreateGuideStep(cfg));
        }

        curStep = linkGuideStep.First;
    }

    /// <summary>
    /// 开始引导
    /// </summary>
    public void BeginGuide()
    {
        if (null == curStep)
            return;

        curStep.Value.StartGuide();
    }

    /// <summary>
    /// 开始下一步引导
    /// </summary>
    public void BeginNextStep()
    {
        curStep = curStep.Next;
        curStep.Value.StartGuide();
    }

    /// <summary>
    /// 结束引导
    /// </summary>
    public void EndGuide()
    { 

    }

    /// <summary>
    /// 创建引导步骤
    /// </summary>
    /// <param name="dataGuideCfg"></param>
    /// <returns></returns>
    private GuideStepBase CreateGuideStep(DataGuideCfg dataGuideCfg)
    {
        if (null == dataGuideCfg)
            return null;

        return dataGuideCfg.GuideType switch // TODO，字符串测试用，后续配置改枚举
        {
            "播放视频" => new PlayVideoStep(dataGuideCfg),
            "点击按钮" => new ClickButtonStep(dataGuideCfg),
            "进入主界面" => new FirstEnterMainStep(dataGuideCfg),
            "显示引导提示" => new ShowGuideTipStep(dataGuideCfg),
            "" => default,
            _ => throw new Exception($"未处理类型:{dataGuideCfg.GuideType}"),
        };
    }
}