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

namespace Code.Scripts.Gameplay.BT.Task
{
    public class BTMoveAway : Action
    {
        public SharedBattleInfo SharedBattleInfo;
        private GameUnit _owner;
        private bool lastMoveState;

        private bool needCheck;

        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
            AvoidOtherUnit();

            if (_owner != null && SharedBattleInfo.Value.theChosenOneId != Constants.INVALID_UINT_ID &&
                !AIUtils.IsNeedStop(_owner))
            {
                if (GameUnitManager.instance.infightUnits.Contains(SharedBattleInfo.Value.theChosenOneId))
                {
                    var enemy = GameUnitManager.instance.infightUnits.Search(SharedBattleInfo.Value.theChosenOneId);
                    if (enemy != null && !enemy.statusData.isDead)
                    {
                        if (AIUtils.MoveAway(_owner, enemy))
                            SharedBattleInfo.Value.theChosenOneId = Constants.INVALID_UINT_ID;
                    }
                }
                else
                {
                    SharedBattleInfo.Value.theChosenOneId = Constants.INVALID_UINT_ID;
                }
            }

            return TaskStatus.Success;
        }

        private async void AvoidOtherUnit()
        {
            if (AIUtils.IsNeedStop(_owner)) return;

            if (_owner.statusData.isMoveing && !needCheck)
            {
                needCheck = true;
            }

            if (needCheck && !_owner.statusData.isMoveing &&
                _owner.controlData.targetCellIndex == -1)
            {
                needCheck = false;
                // 随机等待 防止同步
                var randomDelay = UnityEngine.Random.Range(0f, 1f);
                await UniTask.Delay((int)(randomDelay * 1000));

                AIUtils.CheckAreaIsOtherEnemyUnit(_owner, SharedBattleInfo.Value.theChosenOneId);
            }
        }
    }
}