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

namespace Gameplay.Guide
{
    /// <summary>
    /// 新手引导管理器
    /// </summary>
    public class GuideManager : Singlenton<GuideManager>, IInitable
    {
        /// <summary>
        /// 新手引导配置字典，key：引导组，Value：引导步骤配置链表
        /// </summary>
        private Dictionary<int, LinkedList<DataGuideCfg>> dicGuideCfg;
        /// <summary>
        /// 当前的引导组
        /// </summary>
        private GuideGroup curGroup;

        /// <summary>
        /// 当前已完成引导步骤id(测试用)
        /// </summary>
        private int completeId = 0;

        /// <summary>
        /// 是否引导中
        /// </summary>
        public bool IsGuiding
        {
            get { return curGroup != null && curGroup.IsGuiding; }
        }

        public void Init()
        {
            EventManager.Instance.Register(EventManager.EventName.AllConfigLoad, InitData);
        }

        public void Release()
        {
            EventManager.Instance.Unregister(EventManager.EventName.AllConfigLoad, InitData);
        }

        /// <summary>
        /// 开始引导
        /// </summary>
        public bool BeginGuide()
        {
#if GUIDE
            if (IsGuiding)
                return false;

            foreach (var guide in dicGuideCfg)
            {
                if (guide.Key > completeId)
                {
                    curGroup = new(guide.Key, guide.Value); // TODO 测试
                    curGroup.BeginGuide();
                    return true;
                }
            }
#endif
            return false;
        }

        /// <summary>
        /// 完成指定引导步骤
        /// </summary>
        /// <param name="step"></param>
        public void CompleteStep(GuideStepBase step)
        {
            if (null == curGroup)
                return;

            if (step != curGroup.CurStep)
            {
                DebugUtil.LogError("要完成的引导步骤不是当前步骤");
                EndGuide(true);

                return;
            }

            if (curGroup.IsComplete)
            {
                completeId = curGroup.GroupId;

                // TODO 完成引导组,保存服务器
                int nextGroupId = curGroup.NextGroupId;
                if (dicGuideCfg.TryGetValue(nextGroupId, out LinkedList<DataGuideCfg> linkCfg))
                {
                    curGroup = new(nextGroupId, linkCfg);
                    curGroup.BeginGuide();
                }
                else
                    EndGuide(false);
            }
            else
                curGroup.BeginNextStep();
        }

        /// <summary>
        /// 结束引导
        /// </summary>
        private void EndGuide(bool isReEnterMain)
        {
            if (IsGuiding)
                curGroup.EndGuide();

            curGroup = null;
            UIManager.Instance.CloseWindow(UINameConst.UI_Guide);
            UIManager.Instance.CloseWindow(UINameConst.UI_GuideTip);

            if (isReEnterMain)
                GameStateManager.Instance.ChangeState(new GameStateMainScene());
        }

        /// <summary>
        /// 初始化数据
        /// </summary>
        private void InitData()
        {
            dicGuideCfg = new();

            foreach (DataGuideCfg cfg in TableManager.Instance.Tables.GuideConfig.DataList)
            {
                if (dicGuideCfg.ContainsKey(cfg.GroupId) && !IsFirstStep(cfg))
                    continue;

                DataGuideCfg addCfg = cfg; // 记录要添加进链表的引导步骤配置
                int groudId = cfg.GroupId;
                LinkedList<DataGuideCfg> linkCfg = new();
                dicGuideCfg[groudId] = linkCfg;

                while (null != addCfg && addCfg.GroupId == groudId)
                {
                    linkCfg.AddLast(addCfg);
                    addCfg = TableManager.Instance.Tables.GuideConfig.Get(addCfg.NextId);
                }
            }

            #region 检验每个引导组的步骤顺序是否正常
            foreach (LinkedList<DataGuideCfg> linkCfg in dicGuideCfg.Values)
            {
                DataGuideCfg preCfg = null;
                foreach (DataGuideCfg cfg in linkCfg)
                {
                    if (null == preCfg)
                    {
                        preCfg = cfg;
                        continue;
                    }

                    if (preCfg.NextId != cfg.Id)
                    {
                        Debug.LogError($"新手引导配置出错，组id:{cfg.GroupId}, 当前步骤id:{preCfg.Id}, 实际下一步步骤id：{preCfg.NextId}, 当前下一步步骤id：{cfg.Id}");
                        return;
                    }
                    else
                        preCfg = cfg;
                }
            }
            #endregion
        }

        /// <summary>
        /// 是否是引导组的第一步
        /// </summary>
        /// <returns></returns>
        private bool IsFirstStep(DataGuideCfg dataGuideCfg)
        {
            return dataGuideCfg.Id == dataGuideCfg.GroupId;
        }
    }
}