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

namespace Code.Scripts.Gameplay.BT.Task
{
    public class BTBeginPatrol : BehaviorDesigner.Runtime.Tasks.Conditional
    {
        public SharedBattleInfo SharedBattleInfo;

        private int _targetCellIndex;
        private int _lastTargetPointIndex;
        private GameUnit _owner;
        private Map _map;
        private Level _level;

        public override void OnStart()
        {
            _owner = GameUnitManager.instance.infightUnits.Search(SharedBattleInfo.Value.ownerID);
            _level = LevelManager.Instance.CurrentLevel;
            if (_level != null)
                _map = _level.Map;

            // 回到离自己最近的巡逻点
            if (SharedBattleInfo.Value.patrolPointIndex == -1)
            {
                SharedBattleInfo.Value.patrolPointIndex = AIUtils.FindNearestPointInPatrolInfo(_owner, SharedBattleInfo.Value.patrolInfos);
                _lastTargetPointIndex = -1;
            }
        }

        public override TaskStatus OnUpdate()
        {
            if (AIUtils.AINeedStopUpdate(_level)) return TaskStatus.Running;

            if (!_owner.statusData.isMoveing && SharedBattleInfo.Value.patrolPointIndex != _lastTargetPointIndex && !AIUtils.IsNeedStop(_owner))
            {
                _lastTargetPointIndex = SharedBattleInfo.Value.patrolPointIndex;
                _targetCellIndex =
                    AIUtils.GetPatrolPointIndexFromVector2Int(_map, SharedBattleInfo.Value.patrolPointIndex, SharedBattleInfo.Value.patrolInfos);
                AIMoveHelper.MoveToCell(_owner, _targetCellIndex, false);
                
                return TaskStatus.Running;
            }

            if (_owner.transData.cellIndex == _targetCellIndex)
                return TaskStatus.Success;

            /*if (!_owner.statusData.isMoveing) // 没有移动表示路径错误，被控制，被阻挡，需要重新设置移动
                _lastTargetPointIndex = -1;*/

            return TaskStatus.Running;
        }
    }
}