using System;
using System.Collections.Generic;
using AOT.PostProcess.BlackArea;
using BehaviorDesigner.Runtime.Tasks;
using Code.Scripts.Gameplay.Enviorment;
using Framework;
using Gameplay.Area;
using Gameplay.Buff;
using Gameplay.Bullet;
using Gameplay.Character;
using Gameplay.Fight.Capture;
using Gameplay.Fight.Flag;
using Gameplay.Guide;
using Gameplay.Pause;
using Gameplay.PostProcess.BlackArea;
using Gameplay.Skill;
using Gameplay.Summon;
using Gameplay.Unit;
using Gameplay.Unit.Data;
using Gameplay.Vehicle;
using Gameplay.Vehicle.Impl;
using Gameplay.Vehicle.TireMark;
using PhxhSDK;
using TGS;
using UnityEngine;
using Utils.Bounds;

namespace Gameplay.Level
{
    public class BattleState : LevelBaseState
    {

        private bool _canUpdate;

        protected override void _OnEnter()
        {
            _canUpdate = false;
            
            AreaManager.instance.Init();

            TireMarkManager.CreateInstance();
            TireMarkManager.instance.Init();

            BulletManager.CreateInstance();
            BuffManager.instance.Init();
            SkillManager.instance.Init();
            BulletManager.instance.Init();
            
            PauseManager.CreateInstance();
            PauseManager.instance.Init();
            
            EnviormentManager.CreateInstance();
            EnviormentManager.instance.Init();
            
            GameUnitManager.instance.EnterBattle();
            
            // 这个必须在GameUnitManager.instance.EnterBattle()之后
            // 因为他会给unit增加buff
            BoundsManager.instance.Init();

            _level.LevelTime = 0;
            _level.isInBattle = true;

            EventManager.Instance.Send(EventManager.EventName.LevelBattleBegin);
            
            EventManager.Instance.Register(EventManager.EventName.ToFightModelDragEnd, (Action<Vector2>)_OnModelDragEnd);
            _canUpdate = true;
            
            
            var cameraInfo = _level.Map.MapData.cameraMarginInfo;
            CameraManager.Instance.MainCamera.GetComponent<CameraController>().rightMargin = cameraInfo.rightMarginInFight;
            CameraManager.Instance.MainCamera.GetComponent<CameraController>().leftMargin = cameraInfo.leftMarginInFight;
            CameraManager.Instance.MainCamera.GetComponent<CameraController>().topMargin = cameraInfo.topMarginInFight;
            CameraManager.Instance.MainCamera.GetComponent<CameraController>().bottomMargin = cameraInfo.bottomMarginInFight;
            
            CameraManager.Instance.MainCamera.GetComponent<CameraController>().AdjustSelf();
            
            LevelManager.Instance.CurrentLevel.SetSpeed(ELevelSpeed.DEFAULT_SPEED);
        }

        protected override void _OnUpdate(float deltaTime)
        {
            if (!_canUpdate) return;
            _level.LevelTime += deltaTime;
            SkillManager.instance.LogicUpdate(deltaTime);
            BulletManager.instance.LogicUpdate(deltaTime);
            GameUnitManager.instance.LogicUpdate(deltaTime);
            BuffManager.instance.LogicUpdate(deltaTime);
            AreaManager.instance.LogicUpdate(deltaTime);
            PauseManager.instance.LogicUpdate(deltaTime);
            TireMarkManager.instance.LogicUpdate(deltaTime);
            CaptureManager.instance.LogicUpdate(deltaTime);
            BlackAreaManager.instance.LogicUpdate(deltaTime);
            EventManager.Instance.Send(EventManager.EventName.LevelTimeIncrease,deltaTime);
        }

        protected override void _OnExit()
        {
            _level.isInBattle = false;

            BulletManager.instance.Dispose();
            BoundsManager.instance.Dispose();
            TireMarkManager.instance.Dispose();
            EnviormentManager.instance.Dispose();
            
            EventManager.Instance.Unregister(EventManager.EventName.ToFightModelDragEnd, (Action<Vector2>)_OnModelDragEnd);
        }

        public BattleState(Level level) : base(level)
        {
        }

        protected override void _OnClick(Vector2 screenPosition)
        {
            var clickCellIndex = GroundHitHelper.CalcHitCellIndex(screenPosition,_level.Map.TerrainGridSystem);
            if (clickCellIndex < 0)
            {
                if (GuideManager.Instance.IsGuiding && GuideManager.Instance.IsControlFloor)
                    return;

                _SendDragCancelEvent();
                return;
            }

            CheckCellClick(_level.Map.TerrainGridSystem, clickCellIndex, 0);
        }

        protected override void _OnCellClick(TerrainGridSystem tgs,
            int cellIndex,
            int buttonIndex)
        {
            if (InputManager.Instance.HandledThisFrame())
            {
                _SendDragCancelEvent();
                return;
            }
            var map = _level.Map;
            if (map == null) return;
            var unitList = AreaManager.instance.GetUnitsByCellIndex(cellIndex);
            OnHit(unitList, cellIndex);
            //_SendDragSuccess();
        }

        private void OnHit(List<GameUnit> units,
            int cellIndex)
        {
            if (units.Count <= 0)
            {
                var map = _level.Map;
                var worldPosition = map.TerrainGridSystem.CellGetPosition(cellIndex);
                var teamSelectID = TeamManager.Instance.SelectID;
                

                if (ValueValidator.IsIdValid(teamSelectID))
                {
                    var unit = GameUnitManager.instance.totalUnits.Search(teamSelectID);
                    if (GameUnitManager.instance.prepareUnits.Contains(teamSelectID))
                    {
                        //在车上不算在准备席，只是UI在备战席
                        _FightInBattle(map, cellIndex, worldPosition);
                        return;
                    }
                    
                    if (GameUnitManager.instance.infightUnits.Contains(teamSelectID))
                    {
                        if (unit.gameunitType == EGameUnitType.Character)
                        {
                            if (unit.statusData.isOnVehicle)
                            {
                                //下车
                                _GetOutVehicle(teamSelectID, cellIndex);
                                return;
                            }
                        }
                    }
                }
            }

            var selectUnit = _level.selectUnit;
            if (selectUnit == null)
            {
                // 进行选中
                for (int i = 0; i < units.Count; i++)
                {
                    var unit = units[i];
                    if (unit.commonData.canSelect)
                    {
                        // 只选中可控制单位
                        _level.SelectUnit(unit);
                        if (unit.debugShowInfo.cacheConfigId != 0)
                        {
                            EventManager.Instance.Send(EventManager.EventName.INFIGHT_AUDIO_SELECT_UNIT, unit.debugShowInfo.cacheConfigId);
                        }
                        break;
                    }
                }
                return;
            }

            var isLightUp = BlackAreaManager.instance.CheckIsInLightArea(cellIndex);
            if (units.Count <= 0 || !isLightUp)
            {
                // 进行移动
                selectUnit.MoveTo(cellIndex, true);
                if (selectUnit.debugShowInfo.cacheConfigId != 0)
                {
                    EventManager.Instance.Send(EventManager.EventName.INFIGHT_AUDIO_CLICK_MOVE, selectUnit.debugShowInfo.cacheConfigId);
                }
            }
            else
            {
                // 如果当前选择目标是己方英雄
                switch (selectUnit.gameunitType)
                {
                    case EGameUnitType.Character:
                        _HandleCharacterSelect(units, selectUnit as Character.Character);
                        break;
                    case EGameUnitType.Vehicle:
                        _HandleVehicleSelect(units, selectUnit as NormalVehicle);
                        break;
                    default:
                        break;
                }


            }
            
            _SendDragCancelEvent();
        }

        private void _HandleVehicleSelect(List<GameUnit> units,
            NormalVehicle vehicle)
        {
            // 设置目标
            for (int i = 0; i < units.Count; i++)
            {
                var unit = units[i];

                // 如果是敌人,则设置目标
                if (Level.IsEnemy(vehicle, unit))
                {
                    vehicle.MoveTo(unit);
                    return;
                }

                // 如果是己方单位,则选中
                if (unit.commonData.canSelect)
                {
                    // 只选中可控制单位
                    _level.SelectUnit(unit);
                    return;
                }

            }

            // 如果走到这里,只能进行移动操作
            vehicle.MoveTo(units[0].transData.cellIndex, true);
        }

        private void _HandleCharacterSelect(List<GameUnit> units,
            Character.Character character)
        {
            for (int i = 0; i < units.Count; i++)
            {
                var unit = units[i];

                // 如果是敌人,则设置目标
                if (Level.IsEnemy(character, unit))
                {
                    character.MoveTo(unit);
                    
                    if (character.debugShowInfo.cacheConfigId != 0)
                    {
                        EventManager.Instance.Send(EventManager.EventName.INFIGHT_AUDIO_CLICK_ATTACK, character.debugShowInfo.cacheConfigId);
                    }
                    return;
                }

                // 目前不需要该段逻辑
                // 如果是载具,则向载具移动
                if (unit.gameunitType == EGameUnitType.Vehicle)
                {
                    // 需要紧挨着载具
                    var vehicle = unit as NormalVehicle;
                    if (vehicle == null) continue;
                    var vehicleCellIndex = vehicle.transData.cellIndex;
                    var characterCellIndex = character.transData.cellIndex;
                    var distance = _level.Map.TerrainGridSystem.CellGetHexagonDistance(vehicleCellIndex, characterCellIndex);
                    if (distance <= 1)
                    {
                        // 在附近,则移动到载具
                        if (vehicle.CheckCanUp(character))
                        {
                            if (GuideManager.Instance.IsGuiding)
                                EventManager.Instance.Send(EventManager.EventName.Guide_JoinVehicle);

                            character.UpVehicle(vehicle);
                        }
                        else
                        {
                            character.MoveTo(vehicle.transData.cellIndex, true);
                        }
                        return;
                    }
                }

                // 如果是己方单位,则选中
                if (unit.commonData.canSelect)
                {
                    _level.SelectUnit(unit);
                    return;
                }
            }

            // 如果走到这里,只能进行移动操作
            character.MoveTo(units[0].transData.cellIndex, true);
        }

        //战斗中上阵
        private void _PutUnitInLevel(Map map,
            int cellIndex,
            Vector3 worldPosition)
        {
            if (map == null)
            {
                return;
            }
            var teamSelectID = TeamManager.Instance.SelectID;
            if (ValueValidator.IsIdValid(teamSelectID))
            {
                if (TeamManager.Instance.IsInLevel(teamSelectID))
                {
                    var unit = GameUnitManager.instance.infightUnits.Search(teamSelectID);
                    if (unit.gameunitType == EGameUnitType.Character)
                    {
                        if (unit.statusData.isOnVehicle)
                        {
                            //下车
                            _GetOutVehicle(teamSelectID, cellIndex);
                        }
                    }
                }
                else
                {
                    _FightInBattle(map, cellIndex, worldPosition);
                }
            }
        }

        private void _FightInBattle(Map map,
            int cellIndex,
            Vector3 worldPosition)
        {
            if (TeamManager.Instance.IsFightListLimit(TeamManager.Instance.SelectID))
            {
                //TODO chenyq 需要添加到stringconfig
                _SendDragCancelEvent();
                LevelManager.Instance.CurrentLevel.UnSelectUnit();
                UITipsManager.ShowTips("上阵人数达到上限！");
                return;
            }

            // 不是准备区域
            if (!AreaManager.instance.readyAreaManager.CheckIsInReadyArea(cellIndex))
            {
                _SendDragCancelEvent();
                return;
            }
            var crossLevel = 0;
            var unitType = TeamManager.Instance.GetUnitType(TeamManager.Instance.SelectID);

            switch (unitType)
            {
                case SingleTeamCharacterInfo.CharacType.Hero:
                    var characterDataInfo = TeamManager.Instance.GetCharacterDataInfo(TeamManager.Instance.SelectID)
                        .GetConfigInfo();
                    crossLevel = characterDataInfo.Cfg.MoveCrossLevel;
                    break;
                case SingleTeamCharacterInfo.CharacType.Vehicle:
                    var vehicleInfo = TeamManager.Instance.GetCharacterDataInfo(TeamManager.Instance.SelectID)
                        .GetVehicleInfo();
                    crossLevel = vehicleInfo.Cfg.MoveCrossLevel;
                    break;
                default:
                    DebugUtil.LogError("暂未处理的类型:{0}", unitType);
                    return;
            }

            // 检查通行级别是否可以放置
            var blockData = map.GetBlockData(cellIndex);
            if (!MapUtils.CanPass(crossLevel, blockData.GetTerrainTypeProperty()))
            {
                _SendDragCancelEvent();
                return;
            }

            var yaw = LevelUtils.SetCharaterToward(_level.GetLevelData().preparingRegionToward);

            switch (unitType)
            {
                case SingleTeamCharacterInfo.CharacType.Hero:
                    _CreateCharacter(TeamManager.Instance.SelectID, worldPosition, yaw);
                    break;
                case SingleTeamCharacterInfo.CharacType.Vehicle:
                    _CreateVehicle(TeamManager.Instance.SelectID, worldPosition, yaw);
                    break;
            }
            
            _level.SelectUnit(TeamManager.Instance.SelectID);
            _SendDragSuccess();
            //_level.SetSpeed(ELevelSpeed.Normal);
        }

        private async void _CreateCharacter(uint id,
            Vector3 position,
            float yaw)
        {
            var map = _level.Map;
            if (map == null) return;

            // var characterInfo = CharacterDataInfoManager.Instance.GetCharacterInfo(TeamManager.Instance.SelectID);
            // if (characterInfo == null)
            // {
            //     return;
            // }

            // var character = await GameUnitManager.instance.PrepareCharacter(characterInfo, ETroopsId.Self);
            // if (character == null)
            // {
            //     DebugUtil.LogError("创建角色失败");
            //     return;
            // }
            if (!map.WorldPosition2TGSCellIndex(position, out var cellIndex))
            {
                DebugUtil.LogError("无法获取到单元格索引");
                return;
            }
            GameUnitManager.instance.MoveUnitToFight(id, cellIndex, yaw);
        }

        private async void _CreateVehicle(uint id,
            Vector3 pos,
            float yaw)
        {
            // var vInfo = VehicleCultivateDataManager.Instance.GetVehicleCultivateData(id);
            // var vehicle = await GameUnitManager.instance.PrepareVehicle(vInfo, ETroopsId.Self);
            // if (vehicle == null)
            // {
            //     DebugUtil.LogError("创建载具失败");
            //     return;
            // }
            if (!_level.Map.WorldPosition2TGSCellIndex(pos, out var cellIndex))
            {
                DebugUtil.LogError("无法获取到cellIndex: {0}", pos);
                return;
            }
            GameUnitManager.instance.MoveUnitToFight(id, cellIndex, yaw);
        }

        private void _GetOutVehicle(uint uid,
            int cellIndex)
        {
            if (GameUnitManager.instance.infightUnits.Search(uid) is Character.Character gameUnit)
            {
                var character = gameUnit;
                if (character.fullFSM.currentState.id != EFullState.OnVehicle)
                {
                    return;
                }
                if (AreaManager.instance.readyAreaManager.CheckIsInReadyArea(cellIndex))
                {
                    character.transData.disableEvent = true;
                    character.transData.pos =
                        LevelManager.Instance.CurrentLevel.Map.TGSCellIndex2WorldPosition(cellIndex);
                    character.transData.disableEvent = false;
                    character.DownVehicle();
                    _SendDragSuccess();
                    return;
                }

                _SendDragCancelEvent();
            }
        }

        private void _OnModelDragEnd(Vector2 screenPos)
        {
            _OnClick(screenPos);
        }

        private void _SendDragCancelEvent()
        {
            if (TeamManager.IsHideAllUI)
            {
                TeamManager.IsHideAllUI = false;
                TeamManager.Instance.CloseFightPosterUI();
            }
            EventManager.Instance.Send(EventManager.EventName.ToFightModelDragSuc, false);
        }

        private void _SendDragSuccess()
        {
            if (TeamManager.IsHideAllUI)
            {
                TeamManager.IsHideAllUI = false;
                TeamManager.Instance.CloseFightPosterUI();
            }
            EventManager.Instance.Send(EventManager.EventName.ToFightModelDragSuc, true);
        }
    }
}