using System.Collections.Generic;
using Gameplay.Area;
using Gameplay.Character;
using Gameplay.Character.Helper;
using Gameplay.Character.Skill;
using Gameplay.Common;
using Gameplay.Effect;
using Gameplay.Level;
using Gameplay.Pool;
using Gameplay.Skill;
using Gameplay.Summon;
using Gameplay.Unit;
using Gameplay.Unit.Data;
using Gameplay.Vehicle.Impl;
using LTGame;
using PhxhSDK;
using UnityEngine;
namespace Gameplay.Vehicle.State
{
    public class VehicleStateSkill: BaseVehicleState, ISkillState
    {
        
        private readonly List<CharacterSkillAction> _skillActions;
        private SkillHandle _skillHandle;
        public SkillHandle GetSkillHandle()
        {
            return _skillHandle;
        }

        private int _skillActionId;
        public int GetSkillActionId()
        {
            return _skillActionId;
        }

        // 这个是专门给特殊技能逻辑2用的
#region 特殊使用

        private List<GameUnit> _cacheEnemys;
        public List<GameUnit> GetCacheEnemyUnits()
        {
            return _cacheEnemys;
        }
        
        public int cacheIndex { get; set; }

#endregion

        public bool readyPauseEnd { get; set; }
        public bool readySkillEnd { get; set; }
        public GameUnit GetOwner()
        {
            return owner;
        }

        private GameObject _cacheGroundEffect;
        
        private float _oldSpeed;
        
        public VehicleStateSkill(NormalVehicle owner): base(owner, EVehicleState.Skill)
        {
            _skillActions = new List<CharacterSkillAction>();
            _cacheEnemys = new List<GameUnit>();
        }
        
        protected override void _OnEnter(NBaseState exitState,
            object param)
        {
            base._OnEnter(exitState, param);
            
            // 取消选中
            LevelManager.Instance.CurrentLevel.UnSelectUnit();

            _oldSpeed = LevelManager.Instance.CurrentLevel.GetSpeed();
            LevelManager.Instance.CurrentLevel.SetSpeed(ELevelSpeed.DEFAULT_SPEED);

            readyPauseEnd = false;
            readySkillEnd = false;
            owner.statusData.isInSkilling = true;

            // 只有己方单位使用技能需要暂停
            if (owner.commonData.troopId == ETroopsId.Self)
            {
                owner.statusData.needSkillPaused = true;

                // 将自己添加进全屏效果
                SkillManager.instance.screenEffect.AttachUnit(owner);

                EffectManager.instance.forceSetLayer = LayerDefine.Skill;
            }

            //TODO: 播放技能动作
            var skillUnit = SkillManager.instance.GetUnitSkillManager(owner);
            _skillHandle = skillUnit.positiveSkill;
            _skillActionId = _skillHandle.runtimeData.configData.SkillActionId;
            
            // 根据逻辑序列进行处理
            _PrepareActions();
            _PlayGroundEffect();
        }
        
        private void _PlayGroundEffect()
        {
            if (!owner.statusData.needSkillPaused)
            {
                return;
            }
            var skillConfig = _skillHandle.runtimeData.configData;
            if (!skillConfig.IsEmitToFloor)
            {
                return;
            }
            var showAreaId = skillConfig.ShowAreaId;
            var showCellIndexs = AreaManager.instance.GetCellIndexs(owner.controlData.skillCellIndex, showAreaId);
            _cacheGroundEffect = CharacterSkillHelper.CreateSkillGroundHighLight(showCellIndexs);
        }
        
        private void _PrepareActions()
        {
            // 根据逻辑序列进行处理
            _skillActions.Clear();
            var logicData = _skillHandle.runtimeData.logicData;
            if (logicData == null) return;
            var emitCount = 0;
            for (var i = 0; i < logicData.actionList.Count; ++i)
            {
                var actionData = logicData.actionList[i];

                var action = CharacterSkillHelper.CreateAction(actionData);
                if (action == null)
                {
                    DebugUtil.LogError("未找到对应的action:" + actionData.actionType);
                    continue;
                }
                
                action.actionData = actionData.Clone();
                action.skill = this;
                action.triggerTime = actionData.triggerTime;

                if (action.actionData.actionType == ESkillActionType.EMIT_BULLET
                    || action.actionData.actionType == ESkillActionType.EMIT_BULLET_SELECT)
                {
                    emitCount++;
                    // 转接id
                    _RebindId(action);
                }
                else if (action.actionData.actionType == ESkillActionType.CREATE_SUMMON
                    || action.actionData.actionType == ESkillActionType.EMIT_BULLET_TO_SELF)
                {
                    // 转接id
                    _RebindId(action);
                }

                action.Prepare();
                _skillActions.Add(action);
            }
            
            switch (_skillActionId)
            {
                case 1:
                case 3:
                case 4:
                case 5:
                case 6:
                    CharacterSkillHelper.RotateToTargetCell(owner);
                    break;
                case 2: // 特殊技能逻辑,用于一个技能针对多个目标
                    _HandleSpecialLogic2(emitCount);
                    break;
                default:
                    DebugUtil.LogError("暂未处理的logicActionId:" + _skillActionId);
                    break;
            }
        }
        
        private void _HandleSpecialLogic2(int emitCount)
        {
            // 筛选出目标
            cacheIndex = 0;
            _cacheEnemys.Clear();
            var areaId = _skillHandle.runtimeData.configData.InfluenceAreaId;
            var areaIndexs = AreaManager.instance.GetCellIndexs(owner.controlData.skillCellIndex, areaId);
            var allEnemys = _SearchEnemysByCellIndexs(areaIndexs);
            if (allEnemys.Count > emitCount)
            {
                // 随机选emitCount个,去重
                _cacheEnemys = PhxhSDK.Utils.GetRandomElementFromList(allEnemys, emitCount);
            }
            else if (allEnemys.Count == emitCount)
            {
                // 全部选
                _cacheEnemys = allEnemys;
            }
            else
            {
                // 全部选,并且随机补充
                _cacheEnemys.AddRange(allEnemys);
                var needCount = emitCount - allEnemys.Count;
                for (int i = 0; i < needCount; i++)
                {
                    var randomEnemy = PhxhSDK.Utils.RandomFromList(allEnemys);
                    _cacheEnemys.Add(randomEnemy);
                }
            }
            // 旋转到第一个目标
            if (_cacheEnemys.Count > 0)
            {
                CharacterSkillHelper.RotateToTargetEnemy(owner, _cacheEnemys[0]);
            }
        }

        private void _RebindId(CharacterSkillAction action)
        {
            var idIndex = action.actionData.id;
            if (idIndex >= _skillHandle.runtimeData.configData.ReferIds.Count)
            {
                idIndex = _skillHandle.runtimeData.configData.ReferIds.Count - 1;
            }
            action.actionData.id = _skillHandle.runtimeData.configData.ReferIds[idIndex];
        }
        
        private List<GameUnit> _SearchEnemysByCellIndexs(List<int> cellIndexs)
        {
            var result = new List<GameUnit>();
            var selfTroopId = owner.commonData.troopId;
            for (int i = 0; i < cellIndexs.Count; i++)
            {
                var searchCellIndex = cellIndexs[i];
                var searchUnits = AreaManager.instance.GetUnitsByCellIndex(searchCellIndex);
                for (int j = 0; j < searchUnits.Count; j++)
                {
                    var searchUnit = searchUnits[j];
                    if (searchUnit.gameunitType != EGameUnitType.Character) continue;
                    if (searchUnit.statusData.isDead) continue;
                    if (searchUnit.commonData.troopId != selfTroopId)
                    {
                        result.Add(searchUnit);
                    }
                }
            }
            return result;
        }
        
        protected override void _OnRunning()
        {
            base._OnRunning();
            for (var i = 0; i < _skillActions.Count; ++i)
            {
                var action = _skillActions[i];
                action.LogicUpdate(passTime);
                if (action.isTriggered)
                {
                    _skillActions.RemoveAt(i);
                    i--;
                }
            }

            if (_skillActions.Count <= 0 || readyPauseEnd)
            {
                owner.statusData.needSkillPaused = false;
                EffectManager.instance.forceSetLayer = -1;
            }

            if (_skillActions.Count <= 0 || readySkillEnd)
            {
                isFinished = true;
                nextState = EFullState.Empty;
            }
        }
        
        protected override void _OnExit(NBaseState exitState,
            object param)
        {
            base._OnExit(exitState, param);
            owner.statusData.isInSkilling = false;
            _skillActions.Clear();
            owner.statusData.needSkillPaused = false;
            EffectManager.instance.forceSetLayer = -1;
            
            _skillHandle.TriggerSkillEnd();
            
            if (_cacheGroundEffect != null)
            {
                Object.Destroy(_cacheGroundEffect);
                _cacheGroundEffect = null;
            }
            
            // 恢复速度
            LevelManager.Instance.CurrentLevel.SetSpeed(_oldSpeed);
            
        }
        
    }
}