using FL.Battle;
using FL.Data;
using FL.FGUI;
using FL.Map;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
using XGame;
using XGame.Database;
using XGame.Framework;
using XGame.Framework.Map;
using XGame.Framework.Nodes;
using XGame.Framework.Time;

namespace FL.Nodes.GameMain
{
    public class MapComponent : NodeComponent
    {

        private int _chapterId;
        private EMapSchedule _schedule;
        private ITimer _monsterTimer;
        /// <summary>
        /// boss战斗倒计时
        /// </summary>
        private ITimer _bossTimer;
        /// <summary>
        /// 是否挑战boss失败
        /// 失败后战斗进入该关卡的小怪节点循环
        /// UI显示挑战boss按钮
        /// </summary>
        private bool _isBossFailed;
        /// <summary>
        /// 是否在挑战boss
        /// </summary>
        private bool _isBossChallenge;

        private PlayerEntity _player;
        ///// <summary>
        ///// 怪物坐标相对出生点的偏移值
        ///// 怪物最多13个，分两排排列，索引如下
        ///// 二排   9 5 1 2 6 10
        ///// 一排 11 7 3 0 4 8 12
        ///// 0的左边偏移值为负数
        ///// </summary>
        //private Vector3 _monsterOffset = new Vector3(0.8f, 1.5f, 0);
        ///// <summary>
        ///// 空闲的怪物位置索引
        ///// </summary>
        //private List<int> _unusedIndexs;
        /// <summary>
        /// 怪物的实例对象
        /// </summary>
        private Dictionary<long, MonsterEntity> _monsterMap;
        /// <summary>
        /// 伙伴的实例对象
        /// </summary>
        private Dictionary<long, PartnerEntity> _partnerMap;
        private MapKey _currentMap;

        public override void OnEnable(object intent)
        {
            EventSingle.Instance.AddListener(EventDefine.GameMainMapRemoveEntity, OnRemoveEntity);
            EventSingle.Instance.AddListener(EventDefine.GameMainMapEndMask, OnMapEndMask);
            EventSingle.Instance.AddListener(EventDefine.PartnerDown, OnPartnerDown);
            EventSingle.Instance.AddListener(EventDefine.PartnerUp, OnPartnerUp);
            EventSingle.Instance.AddListener(EventDefine.PartnerPlanChange, OnPartnersChanged);
            EventSingle.Instance.AddListener(EventDefine.PartnerWearAll, OnPartnersChanged);
            EventSingle.Instance.AddListener(EventDefine.GameMainMapChallengeBoss, OnChallengeBoss);
            //InitMonsters();
            StartMap(PlayerData.Instance.chapterId);
        }

        public override void OnDisable()
        {
            EventSingle.Instance.RemoveListener(EventDefine.GameMainMapRemoveEntity, OnRemoveEntity);
            EventSingle.Instance.RemoveListener(EventDefine.GameMainMapEndMask, OnMapEndMask);
            EventSingle.Instance.RemoveListener(EventDefine.PartnerDown, OnPartnerDown);
            EventSingle.Instance.RemoveListener(EventDefine.PartnerUp, OnPartnerUp);
            EventSingle.Instance.RemoveListener(EventDefine.PartnerPlanChange, OnPartnersChanged);
            EventSingle.Instance.RemoveListener(EventDefine.PartnerWearAll, OnPartnersChanged);
            EventSingle.Instance.RemoveListener(EventDefine.GameMainMapChallengeBoss, OnChallengeBoss);

            _player = null;
            _partnerMap?.Clear();
            _monsterTimer?.Cancel();
            _monsterTimer = null;
            _bossTimer?.Cancel();
            _bossTimer = null;
            _isBossFailed = false;
            _isBossChallenge = false;
            _monsterMap?.Clear();
            //_unusedIndexs?.Clear();

            Context.Map.Close(_currentMap);
            _currentMap = null;
        }

        //private void InitMonsters()
        //{
        //    if (_unusedIndexs == null)
        //        _unusedIndexs = new List<int>();
        //    else
        //        _unusedIndexs.Clear();
        //    for (var i = 0; i < 13; i++)
        //    {
        //        _unusedIndexs.Add(i);
        //    }
        //}
        private void StartMap(int chapterId)
        {
            _chapterId = chapterId;
            _schedule = EMapSchedule.LoadingMap;
            var chapter = ChapterTableRepo.Get(_chapterId);
            var map = MapTableRepo.Get(chapter.Map);
            var mapKey = MapKeys.NameToKey(map.AssetName);
            if (mapKey == _currentMap)
            { // 是同一个地图
                StartChapter(true, false);
            }
            else
            {
                // 关闭当前地图
                Context.Map.Close(_currentMap);
                _currentMap = mapKey;
                // 加载新地图
                var mapAsync = Context.Map.RunAsync(mapKey);
                mapAsync.On(_ =>
                {
                    StartChapter(true, true);
                });
            }
        }
        private void StartChapter(bool isChapterChanged, bool isMapChanged)
        {
            _schedule = EMapSchedule.Monster1;
            var chapter = ChapterTableRepo.Get(_chapterId);
            var map = MapTableRepo.Get(chapter.Map);
            var dto = new LoadEntitiesDto();
            dto.chapterId = _chapterId;
            dto.isChapterChanged = isChapterChanged;
            dto.isBossPart = chapter.Part_type == 1;
            dto.isPlayerMove = true;// isChapterChanged || !_isBossFailed;
            //战斗位置
            dto.battlePosition = GetBattlePosition(map, chapter.Part);//  map.BattlePositions[chapter.Part - 1].ToVector3();
            var isGenPlayer = _player == null;
            if (isGenPlayer)
            {
                _player = GenPlayer(map.PlayerBirth.ToVector3());
                //玩家
                dto.player = _player;
                //伙伴
                var partners = GenPartners(_player.BirthPosition);
                AddPartners(partners);
                dto.partners = partners;
            }
            else if (isMapChanged)
            {
                //玩家
                dto.player = _player;
                //伙伴
                dto.partners = _partnerMap.Values.ToArray();
            }
            if (isChapterChanged || dto.isBossPart)
            {
                // 重置玩家血量
                _player.Attr.Dynamic.Clear();
                _player.Attr.ResetHp();
            }
            if (isChapterChanged)
            {
                // 随从可能有替换过，重置随从的出生点
                var birthPosition = _player.BirthPosition;
                foreach (var partner in _partnerMap.Values)
                {
                    partner.BirthPosition = birthPosition + PartnersData.Instance.GetPartnerOffset(partner.Attr.UID);
                }
            }
            //怪物数据
            var monsters = GenMonsters();
            AddMonsters(monsters);
            dto.monsters = monsters;
            dto.monsterMoveDistance = map.MonsterBirth.Y - map.BattleFirst.Y;// map.MonsterPositions[chapter.Part - 1].ToVector3().y - dto.battlePosition.y;
            //定时器
            if (!dto.isBossPart)
            { // 普通节点，增加定时器
                //dto.monsterMoveDelay = 0;
                if (_monsterTimer != null)
                { // 理论上不会出现这个错误
                    _monsterTimer.Cancel();
                    Log.Error($"StartChapter _monsterTimer error. chapterId:{_chapterId}");
                }
                _monsterTimer = Context.Time.AddDelayLooperTimer(chapter.Interval * 20, chapter.Interval * 20, OnLoopGenMonsters);
            }
            else
            { // boss关卡，直接到最后
                //dto.monsterMoveDelay = 1000;
                _schedule = EMapSchedule.Monster5;
                Context.UI.OpenAsync(UIKeys.MainBossLaiXi);
                Context.Time.AddDelayTimer(1000, () =>
                { //1秒后自动关闭
                    Context.UI.Close(UIKeys.MainBossLaiXi);
                    if (chapter.Time > 0)
                    {// boss战斗倒计时
                        _bossTimer = Context.Time.AddDelayTimer(chapter.Time, () =>
                        {
                            CombatFailed();
                        });
                        EventSingle.Instance.Notify(EventDefine.GameMainMapBossStart, chapter.Id);
                    }
                });
            }
            EventSingle.Instance.Notify(EventDefine.GameMainMapLoadEntities, dto);

        }
        private void OnLoopGenMonsters(int times)
        {
            _schedule += 1;
            if (_schedule == EMapSchedule.Monster5)
            {
                _monsterTimer.Cancel();
                _monsterTimer = null;
            }
            var chapter = ChapterTableRepo.Get(_chapterId);
            var map = MapTableRepo.Get(chapter.Map);
            var dto = new LoadEntitiesDto();
            dto.chapterId = _chapterId;
            //战斗位置
            dto.battlePosition = GetBattlePosition(map, chapter.Part);// map.BattlePositions[chapter.Part - 1].ToVector3();
            //怪物数据
            var monsters = GenMonsters();
            AddMonsters(monsters);
            dto.monsters = monsters;
            dto.monsterMoveDistance = map.MonsterBirth.Y - map.BattleFirst.Y;// map.MonsterPositions[chapter.Part - 1].ToVector3().y - dto.battlePosition.y;
            EventSingle.Instance.Notify(EventDefine.GameMainMapLoadEntities, dto);
        }
        private PlayerEntity GenPlayer(Vector3 birth)
        {
            var playerData = PlayerData.Instance;
            var player = new PlayerEntity()
            {
                BirthPosition = birth//玩家出生点
            };
            var entityAttr = new EntityAttributes(0, playerData.UID)
            {
                Name = playerData.Name,
                Radius = 1,
                AttackCD = 2000,
            };
            entityAttr.CopyFrom(playerData.Attr);
            player.Init(UIDDefine.New(), entityAttr, playerData.skillIds);
            return player;
        }
        private PartnerEntity[] GenPartners(Vector3 targetPosition)
        {
            var goneUpMap = PartnersData.Instance.UpPartnerUIDMap;
            var count = goneUpMap.Count;
            var partners = new PartnerEntity[count];
            var index = 0;
            foreach (var partnerUID in goneUpMap.Keys)
            {
                partners[index++] = GenPartner(targetPosition, partnerUID);
            }
            return partners;
        }
        private PartnerEntity GenPartner(Vector3 targetPosition, long partnerId)
        {
            var partner = PartnersData.Instance.GetPartnerAttrByUID(partnerId);
            var entity = new PartnerEntity()
            {
                BirthPosition = targetPosition + PartnersData.Instance.GetPartnerOffset(partner.UID),
                EpigraphId = 20300,
            };
            var entityAttr = new EntityAttributes(partner.TableId, partner.UID)
            {
                Name = partner.Name,
                Radius = partner.Radius,
                AttackCD = 6000,
            };
            entityAttr.CopyFrom(partner.Attr);
            var table = PartnerTableRepo.Get(partner.TableId);
            entity.Init(UIDDefine.New(), entityAttr, new int[] { partner.SkillId });
            return entity;
        }
        private void AddPartners(PartnerEntity[] partners)
        {
            if (_partnerMap == null)
            {
                _partnerMap = new Dictionary<long, PartnerEntity>();
            }
            if (partners == null || partners.Length == 0) return;
            foreach (var partner in partners)
            {
                _partnerMap.Add(partner.EntityId, partner);
            }
        }
        private Vector3 GetMonsterBirth(Vector3 position, int index, int cols, out int row)
        {
            row = 0;
            if (cols < 2)
                return position;
            var offset = 3;
            if (cols == 2)
            {
                position.x -= offset;
                offset *= 2;
            }
            else if (cols == 3)
            {
                position.x -= offset;
            }
            else
            {
                // 最多支持4列
                cols = 4;
                // -4.5, -1.5, 1.5, 4.5
                position.x -= (offset * 1.5f);
            }
            row = index / cols;
            position.x += (index % cols) * offset;
            return position;
        }
        ///// <summary>
        ///// 获取怪物的出生坐标和索引
        ///// </summary>
        ///// <param name="position"></param>
        ///// <param name="positionIdx"></param>
        ///// <returns></returns>
        //private Vector3 GetMonsterBirth(Vector3 position, out int positionIdx)
        //{
        //    if (_unusedIndexs.Count > 0)
        //    {
        //        positionIdx = _unusedIndexs[0];
        //        _unusedIndexs.RemoveAt(0);
        //    }
        //    else
        //    {
        //        positionIdx = 0;
        //    }
        //    if (positionIdx == 0)
        //    {
        //        return position;
        //    }
        //    var offset = Vector3.zero;
        //    var xMultiple = (positionIdx + 1) / 2;
        //    offset.x = _monsterOffset.x * xMultiple;
        //    if (positionIdx % 2 != 0)
        //    { // 索引为奇数的在左边
        //        offset.x = -offset.x;
        //    }
        //    if (xMultiple % 2 != 0)
        //    { // 倍数为奇数的在上面
        //        offset.y = _monsterOffset.y;
        //    }
        //    var target = position + offset;
        //    // 随机偏移xy(-0.2, 0.2)
        //    target.x += Random.Range(-0.25f, 0.25f);
        //    target.y += Random.Range(-0.25f, 0.25f);
        //    return target;
        //}
        //private void PushMonstPositionIdx(int positionIdx)
        //{
        //    if (_unusedIndexs.Contains(positionIdx))
        //        return; // 避免重复记录
        //    for (var i = 0; i < _unusedIndexs.Count; i++)
        //    {
        //        if (positionIdx < _unusedIndexs[i] && (i == 0 || positionIdx > _unusedIndexs[i - 1]))
        //        { // 小于当前索引的值 且 大于(i - 1 )的值
        //            _unusedIndexs.Insert(i, positionIdx);
        //            return;
        //        }
        //    }
        //    _unusedIndexs.Add(positionIdx);
        //}
        private MonsterEntity[] GenMonsters()
        {
            var chapter = ChapterTableRepo.Get(_chapterId);
            var map = MapTableRepo.Get(chapter.Map);
            Vector3 birthPosition = GetMonsterBirth(map, chapter.Part);// map.MonsterPositions[chapter.Part - 1].ToVector3();
            int[] monsterRefresh = null;
            switch (_schedule)
            {
                case EMapSchedule.Monster1:
                    monsterRefresh = chapter.Monster_refresh1;
                    break;
                case EMapSchedule.Monster2:
                    monsterRefresh = chapter.Monster_refresh2;
                    break;
                case EMapSchedule.Monster3:
                    monsterRefresh = chapter.Monster_refresh3;
                    break;
                case EMapSchedule.Monster4:
                    monsterRefresh = chapter.Monster_refresh4;
                    break;
                case EMapSchedule.Monster5:
                    monsterRefresh = chapter.Monster_refresh5;
                    break;
                default:
                    break;
            }
            var monsterCount = (monsterRefresh != null && monsterRefresh.Length > 0) ? monsterRefresh[1] : 0;
            if (monsterCount > 0)
            { // 数量0-3
                var monsters = new MonsterEntity[monsterCount];
                var cols = monsterRefresh[2]; // 敌人列数
                var curve = monsterRefresh[3]; //移动轨迹
                var isBossPart = chapter.Part_type == 1;
                for (var i = 0; i < monsterCount; i++)
                {
                    var position = GetMonsterBirth(birthPosition, i, cols, out var row);
                    var monsterTab = MonsterTableRepo.Get(monsterRefresh[0]);
                    var entityAttr = new EntityAttributes(monsterTab.Id, UIDDefine.New())
                    {
                        Name = monsterTab.Name,
                        Radius = monsterTab.ModelSize * 0.5f,
                        AttackCD = 3000,
                    };
                    entityAttr.Static.Hp = monsterTab.Hp;
                    entityAttr.Static.HpLimit = monsterTab.Hp;
                    entityAttr.Static.MoveSpeed = Mathf.RoundToInt(monsterTab.Speed);
                    entityAttr.Static.Attack = monsterTab.Atk;
                    entityAttr.CurrentHp = monsterTab.Hp;
                    var entity = new MonsterEntity();
                    entity.Init(UIDDefine.New(), entityAttr, monsterTab.Skills);
                    entity.BirthPosition = position;
                    entity.BirthDelay = row * chapter.Interval + (isBossPart ? 1000 : 0); // boss额外加1000毫秒延迟
                    entity.BirthCurve = curve;
                    entity.IsBoss = monsterTab.Type == 2;
                    monsters[i] = entity;
                }
                return monsters;
            }
            return null;
        }
        private void AddMonsters(MonsterEntity[] monsters)
        {
            if (monsters == null || monsters.Length == 0) return;
            if (_monsterMap == null)
            {
                _monsterMap = new Dictionary<long, MonsterEntity>();
            }
            foreach (var monsterInfo in monsters)
            {
                _monsterMap.Add(monsterInfo.EntityId, monsterInfo);
            }
        }
        #region 事件监听
        private void OnRemoveEntity(int eventId, object args)
        {
            var entityId = (long)args;
            if (_monsterMap.TryGetValue(entityId, out var entity))
            {
                _monsterMap.Remove(entityId);
                //PushMonstPositionIdx(entity.PositionIdx);
                CheckMonsterAllDead();
                return;
            }
            if (_partnerMap.TryGetValue(entityId, out var partner))
            {
                _partnerMap.Remove(entityId);
                return;
            }
            if (entityId == _player.EntityId)
            {
                //TODO 失败结算
                CombatFailed();
            }
        }
        private void OnPartnerDown(int eventId, object args)
        {
            var partnerUID = (long)args;
            var entityId = GetPartnerEntityIdByUID(partnerUID);
            if (entityId == 0)
                return;
            EventSingle.Instance.Notify(EventDefine.GameMainMapRemoveEntity, entityId);
        }
        private void OnPartnerUp(int eventId, object args)
        {
            var partnerUID = (long)args;
            var entityId = GetPartnerEntityIdByUID(partnerUID);
            if (entityId != 0)
                return; // 已经有实例对象了
            var chapter = ChapterTableRepo.Get(_chapterId);
            var map = MapTableRepo.Get(chapter.Map);
            var dto = new LoadEntitiesDto();
            dto.chapterId = _chapterId;
            //战斗位置
            dto.battlePosition = GetBattlePosition(map, chapter.Part);// map.BattlePositions[chapter.Part - 1].ToVector3();
            var partner = GenPartner(dto.battlePosition, partnerUID);
            var partners = new PartnerEntity[] { partner };
            AddPartners(partners);
            dto.partners = partners;
            EventSingle.Instance.Notify(EventDefine.GameMainMapLoadEntities, dto);
        }
        private void OnPartnersChanged(int eventId, object args)
        {
            //TODO 临时代码
            if (_partnerMap == null) return;
            var partnerIds = _partnerMap.Keys.ToList();
            _partnerMap.Clear();
            foreach (var partnerId in partnerIds)
            {
                EventSingle.Instance.Notify(EventDefine.GameMainMapRemoveEntity, partnerId);
            }
            var chapter = ChapterTableRepo.Get(_chapterId);
            var map = MapTableRepo.Get(chapter.Map);
            var dto = new LoadEntitiesDto();
            dto.chapterId = _chapterId;
            //战斗位置
            dto.battlePosition = GetBattlePosition(map, chapter.Part);// map.BattlePositions[chapter.Part - 1].ToVector3();
            var partners = GenPartners(dto.battlePosition);
            AddPartners(partners);
            dto.partners = partners;
            EventSingle.Instance.Notify(EventDefine.GameMainMapLoadEntities, dto);

        }
        private void OnChallengeBoss(int eventId, object args)
        {
            CombatFailed(true);
        }
        //private void OnExchangePartner(int eventId, object args)
        //{
        //    var addPartners = (List<int>)args;
        //    var activePartnerIds = PartnersData.Instance.ActiveUIDs;
        //    var count = addPartners.Count;
        //    // 从后往前移除
        //    for (var i = 0; i < count; i++)
        //    {
        //        var partnerId = activePartnerIds[activePartnerIds.Count - 1];
        //        activePartnerIds.RemoveAt(activePartnerIds.Count - 1);
        //        var EntityId = GetPartnerUIDByTableId(partnerId);
        //        if (EntityId == 0)
        //            continue;
        //        EventSingle.Instance.Notify(EventDefine.GameMainMapRemoveEntity, EntityId);
        //    }
        //    activePartnerIds.AddRange(addPartners);
        //    var chapter = ChapterTableRepo.Get(_chapterId);
        //    var map = MapTableRepo.Get(chapter.Map);
        //    var dto = new LoadEntitiesDto();
        //    dto.chapterId = _chapterId;
        //    //战斗位置
        //    dto.battlePosition = map.BattlePositions[chapter.Part - 1].ToVector3();
        //    var partners = GenPartners(dto.battlePosition, addPartners);
        //    AddPartners(partners);
        //    dto.partners = partners;
        //    EventSingle.Instance.Notify(EventDefine.GameMainMapLoadEntities, dto);
        //}
        private void OnMapEndMask(int eventId, object args)
        {
            var sign = (EMapCombatSign)args;
            var chapter = ChapterTableRepo.Get(_chapterId);
            int chapterId;
            if (sign is EMapCombatSign.Success)
            {
                var nextChapter = ChapterTableRepo.Next(_chapterId);
                //没找到新关卡，重新开始
                if (nextChapter == null || nextChapter.Chapter != chapter.Chapter)
                { // 没有新关卡 || 章节id变化
                  //TODO 章节切换
                }
                chapterId = nextChapter?.Id ?? PlayerData.Instance.chapterId;
                _isBossChallenge = false;
            }
            else if (sign is EMapCombatSign.Break)
            {
                var bossChapter = ChapterTableRepo.FindNearestBoss(_chapterId);
                Assert.IsNotNull(bossChapter, $"找不到该关卡的boss节点. Id:{_chapterId}");
                chapterId = bossChapter.Id;
                _isBossFailed = false;
                _isBossChallenge = true;
            }
            else
            { // 失败，重置到本关卡第一个节点
                if (chapter.Part_type == 1)
                { // boss节点失败，进入本关卡小怪节点循环
                    _isBossFailed = true;
                }
                chapterId = _chapterId / 10 * 10 + 1;
                _isBossChallenge = false;
            }
            StartMap(chapterId);
        }
        #endregion
        private void CheckMonsterAllDead()
        {
            if (_monsterMap.Count > 0 || (_player != null && _player.IsDead)) return;
            // 怪物全部死亡
            var chapter = ChapterTableRepo.Get(_chapterId);
            if (chapter.Part_type == 1)
            { //boss关卡
                _isBossFailed = false;
                //TODO 结算
                _bossTimer?.Cancel();
                _bossTimer = null;
                Context.UI.OpenAsync(UIKeys.MainBattleOverVictory);
                Context.Time.AddDelayTimer(2000, () =>
                { //2秒后自动关闭
                    Context.UI.Close(UIKeys.MainBattleOverVictory);
                    EventSingle.Instance.Notify(EventDefine.GameMainMapStartMask, EMapCombatSign.Success);
                });
            }
            else if (_schedule == EMapSchedule.Monster5)
            {
                var nextId = _chapterId + 1;
                if (_isBossFailed)
                { // boss节点失败，进入本关卡小怪节点循环
                    var nextChapter = ChapterTableRepo.Get(nextId);
                    if (nextChapter == null || nextChapter.Part_type == 1)
                    {
                        nextId = _chapterId / 10 * 10 + 1;
                    }
                }
                _chapterId = nextId;
                StartChapter(false, false);
            }
        }
        /// <summary>
        /// 战斗失败
        /// </summary>
        private void CombatFailed(bool isBreak = false)
        {   
            _monsterTimer?.Cancel();
            _monsterTimer = null;
            if (!isBreak)
                Context.UI.OpenAsync(UIKeys.MainBattleOverFail);
            var chapter = ChapterTableRepo.Get(_chapterId);
            // 清空怪物数据
            //foreach (var item in _monsterMap)
            //{
            //    PushMonstPositionIdx(item.Value.PositionIdx);
            //}
            _monsterMap.Clear();
            EventSingle.Instance.Notify(EventDefine.GameMainMapStartMask, isBreak ? EMapCombatSign.Break : (EMapCombatSign)(chapter.Part_type + 1));
        }
        private long GetPartnerEntityIdByUID(long uid)
        {
            foreach (var item in _partnerMap)
            {
                if (item.Value.Attr.UID == uid)
                    return item.Key;
            }
            return 0;
        }

        private Vector3 GetBattlePosition(MapTable map, int mapPart)
        {
            if (_isBossFailed || _isBossChallenge)
                mapPart = 1; // boss失败后战斗位置不再前移
            return map.BattleFirst.ToVector3() + map.PartMove.ToVector3() * (mapPart - 1);
        }
        private Vector3 GetMonsterBirth(MapTable map, int mapPart)
        {
            if (_isBossFailed || _isBossChallenge)
                mapPart = 1; // boss失败后战斗位置不再前移
            return map.MonsterBirth.ToVector3() + map.PartMove.ToVector3() * (mapPart - 1);
        }
    }
}