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

/// <summary>
/// 引导状态
/// </summary>
public enum E_GuideState
{
    /// <summary>
    /// 未开始
    /// </summary>
    NotStarted,
    /// <summary>
    /// 引导中
    /// </summary>
    Guiding,
    /// <summary>
    /// 引导完成
    /// </summary>
    Complete,
}

/// <summary>
/// 引导步骤基类
/// </summary>
public abstract class GuideStepBase
{
    /// <summary>
    /// 引导步骤类型
    /// </summary>
    public string StepType;

    /// <summary>
    /// 引导状态
    /// </summary>
    protected E_GuideState guideState;

    public GuideStepBase(DataGuideCfg dataGuideCfg)
    {
        guideState = E_GuideState.NotStarted;
    }

    public void StartGuide()
    {
        DoBeforeGuide();

        guideState = E_GuideState.Guiding;

        DoGuide();
    }

    /// <summary>
    /// 完成引导
    /// </summary>
    public void Complete()
    {
        if (E_GuideState.NotStarted == guideState)
            return;

        if (E_GuideState.Complete == guideState)
            return;

        guideState = E_GuideState.Complete;
        DoBeforeComplete();
        GuideManager.Instance.Complete(this);
    }

    /// <summary>
    /// 引导显示之前
    /// </summary>
    protected virtual void DoBeforeGuide()
    { }

    /// <summary>
    /// 引导完成之前
    /// </summary>
    protected virtual void DoBeforeComplete()
    { }

    /// <summary>
    /// 引导
    /// </summary>
    protected abstract void DoGuide();
}

/// <summary>
/// 点击按钮
/// </summary>
public class ClickButtonStep : GuideStepBase
{
    public ClickButtonStep(DataGuideCfg dataGuideCfg) : base(dataGuideCfg)
    {
    }

    protected override void DoGuide()
    {

    }
}

/// <summary>
/// 播放视频
/// </summary>
public class PlayVideoStep : GuideStepBase
{
    /// <summary>
    /// 视频路径
    /// </summary>
    private readonly string videoPath;

    public PlayVideoStep(DataGuideCfg cfg) : base(cfg)
    {
        if (cfg.GuideTypeParams.Length <= 0)
            throw new Exception($"引导类型：{StepType}参数错误");

        videoPath = cfg.GuideTypeParams[0];
    }

    protected override void DoBeforeGuide()
    {
        EventManager.Instance.Register(EventManager.EventName.PlayVideoComplete, (Action<string>)OnPlayVideoComplete);
    }

    protected override async void DoGuide()
    {
        await UI_PlayVideoController.Open(videoPath);
    }

    protected override void DoBeforeComplete()
    {
        EventManager.Instance.Unregister(EventManager.EventName.PlayVideoComplete, (Action<string>)OnPlayVideoComplete);
    }

    /// <summary>
    /// 播放视频完成回调
    /// </summary>
    /// <param name="path"></param>
    private void OnPlayVideoComplete(string path)
    {
        if (path != videoPath)
            return;

        Complete();
    }
}