using Framework;
using System.Collections.Generic;
using System.Linq;
using cfg.LevelCfg;
using UnityEngine;

namespace Gameplay.Level
{
    /// <summary>
    /// 关卡管理器
    /// </summary>
    public partial class LevelManager
    {
        private const string LAST_FIGHT_LEVEL_PREFIX = "last_fight_level_";

        /// <summary>
        /// 关卡信息字典
        /// </summary>
        private Dictionary<int, LevelInfo> _levelDic = new();

        /// <summary>
        /// 章节信息字典
        /// </summary>
        private Dictionary<int, ChapterInfo> chapterInfoDic = new();

        /// <summary>
        /// 关卡组信息字典,key:关卡组id，value:关卡组信息
        /// </summary>
        private Dictionary<int, LevelGroupInfo> _levelGroupDic = new();

        private readonly int[] _levelGroupTypeRedPointIDArray = new[] { 101, 102, 103 };

        private Dictionary<LevelChapterType, List<ChapterInfo>> _chapterTypeDic = new();

        private void InitData()
        {
            RegisterEventData();
        }

        private void ReleaseData()
        {
            UnregisterEventData();
            DisposeRedPointTree();
            _levelDic = null;
            chapterInfoDic = null;
            _levelGroupDic = null;
        }

        private void RegisterEventData()
        {
            EventManager.Instance.Register(EventManager.EventName.AllConfigLoad, OnAllConfigLoad);
            EventManager.Instance.Register<int>(EventManager.EventName.NewLevelServerData, OnNewLevelServerData);
        }

        private void UnregisterEventData()
        {
            EventManager.Instance.Unregister(EventManager.EventName.AllConfigLoad, OnAllConfigLoad);
            EventManager.Instance.Unregister<int>(EventManager.EventName.NewLevelServerData, OnNewLevelServerData);
        }

        private void OnAllConfigLoad()
        {
            LoadAllLevel();
            LoadAllLevelGroup();
            LoadAllChapter();
            //InitSortIndex();
            ConstructRedPointTree();
        }

        private void LoadAllLevel()
        {
            _levelDic.Clear();
            var allLevelConfig = TableManager.Instance.Tables.Level.DataList;
            int sortIndex = 0;
            foreach (var config in allLevelConfig)
            {
                var levelInfo = new LevelInfo(config);
                _levelDic.Add(levelInfo.ID, levelInfo);
            }
        }

        /// <summary>
        /// 加载所有章节
        /// </summary>
        private void LoadAllChapter()
        {
            chapterInfoDic.Clear();
            foreach (LevelGroupInfo levelGroupInfo in _levelGroupDic.Values)
            {
                int chapterID = levelGroupInfo.ChapterID;
                if (!chapterInfoDic.TryGetValue(chapterID, out ChapterInfo chapterInfo))
                {
                    DataChapter config = TableManager.Instance.Tables.Chapter.Get(chapterID);
                    if (config != null)
                    {
                        chapterInfo = new ChapterInfo(config);
                        chapterInfoDic.Add(chapterID, chapterInfo);
                    }
                    else
                    {
                        DebugUtil.LogError($"cant find LevelGroup config,{chapterID}");
                    }
                }

                chapterInfo?.AddLevelGroup(levelGroupInfo);
            }

            foreach (ChapterInfo chapterInfo in chapterInfoDic.Values)
            {
                LevelChapterType chapterType = chapterInfo.ChapterType;
                if (!_chapterTypeDic.TryGetValue(chapterType, out List<ChapterInfo> list))
                {
                    list = new();
                    _chapterTypeDic.Add(chapterType, list);
                }

                list.Add(chapterInfo);
            }
        }

        /// <summary>
        /// 加载所有关卡组信息
        /// </summary>
        private void LoadAllLevelGroup()
        {
            _levelGroupDic.Clear();
            foreach (LevelInfo levelInfo in _levelDic.Values)
            {
                int levelGroupID = levelInfo.LevelGroupID;
                if (!_levelGroupDic.TryGetValue(levelGroupID, out LevelGroupInfo levelGroupInfo))
                {
                    DataLevelGroup config = TableManager.Instance.Tables.LevelGroupConfig.Get(levelGroupID);
                    if (config != null)
                    {
                        levelGroupInfo = new LevelGroupInfo(config);
                        _levelGroupDic.Add(levelGroupID, levelGroupInfo);
                    }
                    else
                    {
                        DebugUtil.LogError($"cant find chapter config,{levelGroupID}");
                    }
                }

                levelGroupInfo?.AddLevel(levelInfo);
            }
        }

        // private void InitSortIndex()
        // {
        //     foreach (var list in _chapterTypeDic.Values)
        //     {
        //         list.Sort((a, b) => a.ID.CompareTo(b.ID));
        //         for (int i = 0; i < list.Count; i++)
        //         {
        //             var chapterInfo = list[i];
        //             chapterInfo.SortIndex = i;
        //             chapterInfo.InitAllLevelSortIndex();
        //         }
        //     }
        // }

        private void ConstructRedPointTree()
        {
            foreach (var levelGroupInfo in chapterInfoDic.Values)
            {
                var index = (int)levelGroupInfo.ChapterType;
                if (index < 0 || index > _levelGroupTypeRedPointIDArray.Length)
                {
                    DebugUtil.LogError($"index is out of range!index:{index}");
                    continue;
                }

                var redPointParentID = _levelGroupTypeRedPointIDArray[index];
                levelGroupInfo.ConstructRedPointTree(redPointParentID);
            }
        }

        private void DisposeRedPointTree()
        {
            foreach (var levelGroupInfo in chapterInfoDic.Values)
            {
                if (levelGroupInfo.RedPointNode != null)
                {
                    RedPointManager.Instance.RemoveDynamicNode(levelGroupInfo.RedPointNode);
                }
            }
        }

        private void OnNewLevelServerData(int levelID)
        {
            var levelInfo = GetLevelInfoByID(levelID);
            if (levelInfo != null)
            {
                levelInfo.RefreshServerData();
            }
        }

        private void SaveFightLevel(LevelInfo levelInfo)
        {
            if(levelInfo == null)
                return;
            var levelGroupInfo = levelInfo.LevelGroupInfo;
            if(levelGroupInfo == null)
                return;
            var chapterInfo = levelGroupInfo.ChapterInfo;
            if(chapterInfo == null)
                return;
            PlayerPrefs.SetInt(GetChapterTypeSaveKey(chapterInfo.ChapterType), levelInfo.ID);
        }

        private string GetChapterTypeSaveKey(LevelChapterType chapterType) => LAST_FIGHT_LEVEL_PREFIX + chapterType;

        #region API

        public LevelInfo GetLevelInfoByID(int id)
        {
            if (!_levelDic.TryGetValue(id, out var levelInfo))
            {
                DebugUtil.LogError($"找不到levelInfo,id:{id}");
            }

            return levelInfo;
        }

        public LevelGroupInfo GetLevelGroupInfoByID(int id)
        {
            if (!_levelGroupDic.TryGetValue(id, out var chapterInfo))
            {
                DebugUtil.LogError($"找不到chapterInfo,id:{id}");
            }

            return chapterInfo;
        }

        public ChapterInfo GetChapterInfoByID(int id)
        {
            if (!chapterInfoDic.TryGetValue(id, out var levelGroupInfo))
            {
                DebugUtil.LogError($"找不到levelGroupInfo,id:{id}");
            }

            return levelGroupInfo;
        }

        public List<ChapterInfo> GetAllChapterInfo()
        {
            return chapterInfoDic.Values.ToList();
        }

        /// <summary>
        /// 根据章节类型获取章节信息
        /// </summary>
        /// <param name="levelChapterType"></param>
        /// <returns></returns>
        public void GetChapterInfosByType(LevelChapterType type, ref List<ChapterInfo> listChapterInfo)
        {
            listChapterInfo ??= new();

            listChapterInfo.Clear();

            foreach (ChapterInfo chapterInfo in chapterInfoDic.Values)
            {
                if (chapterInfo.ChapterType == type)
                    listChapterInfo.Add(chapterInfo);
            }
        }

        public List<LevelInfo> GetAllLevelInfo()
        {
            return _levelDic.Values.ToList();
        }

        public List<LevelGroupInfo> GetAllLevelGroupInfo()
        {
            return _levelGroupDic.Values.ToList();
        }

        /// <summary>
        /// 获取某种关卡类型的最新进度
        /// </summary>
        /// <param name="type"></param>
        /// <returns></returns>
        public LevelInfo GetLatestLevelInfo(LevelChapterType type)
        {
            if (_chapterTypeDic.TryGetValue(type, out var list))
            {
                var latestChapterInfo = list.Where(chapterInfo => !chapterInfo.IsLock).ToList()[^1];
                if (latestChapterInfo == null)
                    return null;
                var allUnlockLevels = latestChapterInfo.AllLevelInfo.Where(level => !level.IsLock).ToList();
                allUnlockLevels.Sort((a, b) => a.ID.CompareTo(b.ID));
                return allUnlockLevels[^1];
            }

            return null;
        }

        //获取某种关卡类型上一次战斗的关卡
        public LevelInfo GetLastFightLevelInfo(LevelChapterType type)
        {
            var key = GetChapterTypeSaveKey(type);
            if (!PlayerPrefs.HasKey(key))
            {
                return null;
            }

            var levelID = PlayerPrefs.GetInt(key);
            var levelInfo = GetLevelInfoByID(levelID);
            return levelInfo;
        }

        /// <summary>
        /// 根据关卡ID获取关卡所属章节类型
        /// </summary>
        /// <param name="levelID"></param>
        /// <returns></returns>
        public LevelChapterType GetLevelChapterType(int levelID)
        {
            if (!_levelDic.ContainsKey(levelID))
            {
                DebugUtil.LogError("error level ID! ");
                return LevelChapterType.Main;
            }
            var levelInfo = GetLevelInfoByID(levelID);
            int levelGroupID = levelInfo.LevelGroupID;
            DataLevelGroup config = TableManager.Instance.Tables.LevelGroupConfig.Get(levelGroupID);

            DataChapter chapterCfg = TableManager.Instance.Tables.Chapter.Get(config.ChapterID);
            var chapterInfo = new ChapterInfo(chapterCfg);
            return chapterInfo.ChapterType;
        }

        /// <summary>
        /// 判断关卡是否解锁
        /// </summary>
        /// <param name="levelID"></param>
        /// <returns></returns>
        public bool CheckLevelUnlock(int levelID)
        {
            var levelInfo = GetLevelInfoByID(levelID);
            if(levelInfo == null)
            {
                DebugUtil.LogError($"cant find levelInfo,id:{levelID}");
                return false;
            }
            return !levelInfo.IsLock;
        }

        public string LevelIDToNum(int levelID)
        {
            var levelInfo = GetLevelInfoByID(levelID);
            if(levelInfo == null)
            {
                DebugUtil.LogError($"cant find levelInfo,id:{levelID}");
                return string.Empty;
            }
            return levelInfo.ChapterIndex + "-" + levelInfo.LevelIndex;
        }

        public string LevelIDToName(int levelID)
        {
            var levelInfo = GetLevelInfoByID(levelID);
            if (levelInfo == null)
            {
                DebugUtil.LogError($"cant find levelInfo,id:{levelID}");
                return string.Empty;
            }
            return levelInfo.Name;
        }

        public string GetLevelNum(LevelInfo info)
        {
            if (info == null)
            {
                DebugUtil.LogError("info is null");
                return string.Empty;
            }
            return info.ChapterIndex + "-" + info.LevelIndex;
        }

        public string GetLevelName(LevelInfo info)
        {
            if (info == null)
            {
                DebugUtil.LogError("info is null");
                return string.Empty;
            }
            return info.Name;
        }

        #endregion
    }
}