using BehaviorDesigner.Runtime.Tasks;
using Gameplay.BT.Variables;
using Gameplay.Character;
using Gameplay.Unit;
using Gameplay.AI;
using Framework;

namespace Code.Scripts.Gameplay.BT.Task
{
    public class BTMoveTo : Action
    {
        public SharedBattleInfo SharedBattleInfo;
        private GameUnit _owner;
        private GameUnit _target;
        
        private uint _lastTarget;
        private bool _isRegistered;
        private bool _isBeingAttacked;
        
        public override void OnStart()
        {
            if (!_isRegistered)
            {
                EventManager.Instance.Register<EventDataGetDamaged>(EventManager.EventName.INFIGHT_GET_DAMAGED_FOR_AI,
                    OnDamaged);
                _isRegistered = true;
                _isBeingAttacked = false;
            }

            _owner = GameUnitManager.instance.infightUnits.Search(SharedBattleInfo.Value.ownerId);
        }

        private void OnDamaged(EventDataGetDamaged data)
        {
            //data.sender 发送受伤的角色 data.owner 受到伤害的角色
            /*if (data.owner.GetID() == _owner.GetID())
            {
                _isBeingAttacked = true;
                if (data.sender != null)
                {
                    _target = _target != null
                        ? _target = AIUtils.GetNearestGameUnit(data.owner, data.sender, _target)
                        : _target = data.sender;
                    _target = AIUtils.GetNearestGameUnit(data.owner, data.sender, _target);
                    SharedBattleInfo.Value.theChosenOneId = _target.GetID();
                    _owner.statusData.isAttackActive = true;
                }
            }*/
        }

        public override TaskStatus OnUpdate()
        {
            if (SharedBattleInfo.Value.theChosenOneId != Constants.INVALID_UINT_ID)
            {
                if (_lastTarget != SharedBattleInfo.Value.theChosenOneId && !AIUtils.IsNeedStop(_owner))
                {
                    _lastTarget = SharedBattleInfo.Value.theChosenOneId;
                    if (GameUnitManager.instance.infightUnits.Contains(SharedBattleInfo.Value.theChosenOneId))
                    {
                        var target = GameUnitManager.instance.infightUnits.Search(SharedBattleInfo.Value.theChosenOneId);
                        if (target != null)
                            AIUtils.CheckAndMove(_owner, target.transData.cellIndex);
                    }
                }

                if (_owner?.controlData.targetEnemy == null)
                {
                    _lastTarget = Constants.INVALID_UINT_ID;
                }

                return TaskStatus.Running;
            }
            
            return TaskStatus.Failure;
        }

        public override void OnEnd()
        {
            if (_isBeingAttacked)
            {
                EventManager.Instance.Unregister<EventDataGetDamaged>(EventManager.EventName.INFIGHT_GET_DAMAGED_FOR_AI,
                    OnDamaged);
                _isRegistered = false;
            }
        }
    }
}