using cfg.GuideCfg;
using Gameplay.SubSystems;
using Gameplay;
using System;
using Cysharp.Threading.Tasks;
using Gameplay.Level;

namespace Gameplay.Guide
{
    /// <summary>
    /// 引导状态
    /// </summary>
    public enum E_GuideState
    {
        /// <summary>
        /// 等待引导
        /// </summary>
        Idle,
        /// <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>
        /// 引导完成类型
        /// </summary>
        protected GuideCompleteBase completeBase { get; private set; }

        /// <summary>
        /// 引导配置
        /// </summary>
        public DataGuideCfg Cfg { get; private set; }

        /// <summary>
        /// 引导状态
        /// </summary>
        public E_GuideState GuideState { get; private set; }

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

        public GuideStepBase(DataGuideCfg cfg)
        {
            Cfg = cfg;

            GuideState = E_GuideState.Idle;

            completeBase = Cfg.GuideCompleteType switch
            {
                E_GuideCompleteType.PlayVideoOver => new PlayVideoComplete(Cfg, Complete),
                E_GuideCompleteType.OpenUI => new OpenUIComplete(Cfg, Complete),
                E_GuideCompleteType.CloseUI => new CloseUIComplete(Cfg, Complete),
                E_GuideCompleteType.OpenUIAndAnim => new OpenUIAndAnimComplete(Cfg, Complete),
                E_GuideCompleteType.EnterLevelComplete => new EnterLevelComplete(Cfg, Complete),
                E_GuideCompleteType.EmbattleComplete => new LevelEmbattleComplete(Cfg, Complete),
                _ => throw new Exception($"未处理类型:{Cfg.GuideCompleteType}"),
            };
        }

        /// <summary>
        /// 开始引导
        /// </summary>
        public void StartGuide()
        {
            DoBeforeGuide();

            GuideState = E_GuideState.Guiding;

            DoGuide();
        }

        /// <summary>
        /// 引导开始之前
        /// </summary>
        protected virtual void DoBeforeGuide()
        {
            completeBase.AddListener();
        }

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

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

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

            if (E_GuideState.Complete == GuideState)
                return;

            DebugUtil.Log($"<color=#00FA9A>完成id为{Cfg.Id}的引导</color>"); // #00FA9A绿色

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

        /// <summary>
        /// 结束引导
        /// </summary>
        public void EndGuide()
        {
            if (!IsGuiding)
                return;

            GuideState = E_GuideState.Idle;
            completeBase.RemoveListener();
        }
    }

    /// <summary>
    /// 点击按钮
    /// </summary>
    internal sealed class ClickButtonStep : GuideStepBase
    {
        /// <summary>
        /// UI名
        /// </summary>
        private readonly string uiName;
        /// <summary>
        /// 按钮路径
        /// </summary>
        private readonly string buttonPath;

        public ClickButtonStep(DataGuideCfg cfg) : base(cfg)
        {
            if (cfg.GuideTypeParams.Length <= 1)
                throw new Exception($"引导类型：{Cfg.GuideStepType}，参数错误");

            uiName = cfg.GuideTypeParams[0];
            buttonPath = cfg.GuideTypeParams[1];
        }

        protected override async void DoBeforeComplete()
        {
            base.DoBeforeComplete();

            await UI_GuideController.Open();
        }

        protected override async void DoGuide()
        {
            await UI_GuideController.Open(uiName, buttonPath, Cfg);
        }
    }

    /// <summary>
    /// 播放视频
    /// </summary>
    internal sealed 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：{Cfg.GuideStepType}，参数错误");

            videoPath = cfg.GuideTypeParams[0];
        }

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

    /// <summary>
    /// 第一次进入主界面
    /// </summary>
    internal sealed class FirstEnterMainStep : GuideStepBase
    {
        public FirstEnterMainStep(DataGuideCfg cfg) : base(cfg)
        {
        }

        protected override void DoGuide()
        {
            LoadingExecutorManager.Instance.ExecuteLoading(new MainSceneLoadingExecutor()).Forget();
        }
    }

    /// <summary>
    /// 显示引导提示
    /// </summary>
    internal sealed class ShowGuideTipStep : GuideStepBase
    {
        /// <summary>
        /// 引导提示配置id
        /// </summary>
        private readonly int guideTipCfgId;

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

            if (int.TryParse(cfg.GuideTypeParams[0], out int id))
                guideTipCfgId = id;
        }

        protected override async void DoGuide()
        {
            await UI_GuideTipController.Open(guideTipCfgId);
        }
    }

    /// <summary>
    /// 进入关卡
    /// </summary>
    internal sealed class EnterLevelStep : GuideStepBase
    {
        /// <summary>
        /// 关卡id
        /// </summary>
        private readonly int levelId;

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

            if (int.TryParse(Cfg.GuideTypeParams[0], out int id))
                levelId = id;
        }

        protected override void DoGuide()
        {
            if (E_GuideCompleteType.EnterLevelComplete == completeBase.CompleteType)
            {
                EnterLevelComplete enterLevelComplete = completeBase as EnterLevelComplete;
                LevelManager.Instance.TryEnterLevel(levelId, () => { enterLevelComplete?.OnComplete(levelId); });
            }
            else
                LevelManager.Instance.TryEnterLevel(levelId);
        }
    }

    /// <summary>
    /// 关卡上阵
    /// </summary>
    internal sealed class LevelEmbattleStep : GuideStepBase
    {
        public LevelEmbattleStep(DataGuideCfg cfg) : base(cfg)
        {

        }

        protected override void DoGuide()
        {

        }
    }
}