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

public class BTDefendMoveTo : Action
{
    public SharedBattleInfo SharedBattleInfo;
    private GameUnit _owner;
    private GameUnit _target;
    private uint _lastTarget;
    private AIUtils.AvoidanceContext avoidContext;

    public override void OnStart()
    {
        _owner = GameUnitManager.instance.infightUnits.Search(SharedBattleInfo.Value.ownerID);
    }

    public override TaskStatus OnUpdate()
    {
        if (_owner == null) return TaskStatus.Failure;

        // 避开其他AI
        AIUtils.TryAvoidOtherUnit(_owner, ref avoidContext, SharedBattleInfo.Value.targetID);

        if (SharedBattleInfo.Value.targetID != Constants.INVALID_UINT_ID)
        {
            // 超出守卫范围
            if (AIUtils.CheckDistanceIsOver(_owner))
            {
                SharedBattleInfo.Value.targetID = Constants.INVALID_UINT_ID;
                return TaskStatus.Failure;
            }

            if (_owner.controlData.targetEnemy == null && !AIUtils.IsNeedStop(_owner))
            {
                if (GameUnitManager.instance.infightUnits.Contains(SharedBattleInfo.Value.targetID))
                {
                    var target = GameUnitManager.instance.infightUnits.Search(SharedBattleInfo.Value.targetID);
                    if (target != null)
                    {
                        _owner.controlData.targetEnemy = target;
                        AIUtils.CheckAndMove(_owner, target.transData.cellIndex);
                    }
                }
            }

            if (_owner.controlData.targetEnemy != null &&
                _owner.controlData.targetEnemy.GetID() != SharedBattleInfo.Value.targetID &&
                !AIUtils.IsNeedStop(_owner))
            {
                if (GameUnitManager.instance.infightUnits.Contains(SharedBattleInfo.Value.targetID))
                {
                    var target = GameUnitManager.instance.infightUnits.Search(SharedBattleInfo.Value.targetID);
                    if (target != null)
                    {
                        _owner.controlData.targetEnemy = target;
                        AIUtils.CheckAndMove(_owner, target.transData.cellIndex);
                    }
                }
            }

            return TaskStatus.Running;
        }

        return TaskStatus.Failure;
    }

    public override void OnEnd()
    {
    }
}