using Gameplay.Area;
using Gameplay.Buff;
using Gameplay.Bullet;
using Gameplay.Common;
using Gameplay.Level;
using LTGame;
namespace Gameplay.Summon
{
    public class SummonStateTent2 : BaseSummonState
    {

        private readonly SummonTent2 _tent2;
        private float _remainTriggerTime;
        private float _remainRecoverCD;
        
        public SummonStateTent2(SummonTent2 tent) : base(tent, ESummonState.Tent2)
        {
            _tent2 = tent;
        }

        protected override void _OnEnter(NBaseState exitState,
            object param)
        {
            base._OnEnter(exitState, param);
            _remainTriggerTime = _tent2.triggerInterval;
            _remainRecoverCD = 0;
        }
        
        protected override void _OnRunning()
        {
            base._OnRunning();
            
            // old logic
            _remainTriggerTime -= deltaTime;
            if (_remainTriggerTime <= 0)
            {
                _remainTriggerTime += _tent2.triggerInterval;
                _DoLogic();
            }
            
            // new logic
            // 检测周围是否有低于触发值的单位
            if (_remainRecoverCD > 0)
            {
                _remainRecoverCD -= deltaTime;
            }
            else
            {
                var searchUnit = _SearchAroundUnits();
                if (searchUnit != null)
                {
                    _remainRecoverCD = _tent2.recoverCD;
                    // TODO: 这个id需要从配置读
                    var buffId = 10002;
                    // 恢复护盾
                    var addBuff = BuffManager.instance.CreateBuffById(owner.creator, buffId);
                    addBuff.OverrideFloatParams(_tent2.recoverValueA, _tent2.recoverValueB);
                    BuffManager.instance.AddBuff(searchUnit, addBuff);
                }
            }
        }

        private GameUnit _SearchAroundUnits()
        {
            var map = LevelManager.Instance.CurrentLevel.Map;
            // 由于这里只检测友军,所以直接遍历所有友军即可
            var allUnits = GameUnitMapper.Inst.unitList;
            for (int i = 0; i < allUnits.Count; i++)
            {
                var searchUnit = allUnits[i];
                if (searchUnit.gameunitType != EGameUnitType.Character)
                {
                    // 只对角色生效
                    continue;
                }
                if (searchUnit.commonData.troopId != owner.creator.commonData.troopId)
                {
                    // 只对友军生效
                    continue;
                }
                if (searchUnit.statusData.isDead)
                {
                    // 只对存活单位生效
                    continue;
                }
                var remainShiled = searchUnit.aliveData.currentShield;
                var maxShiled = searchUnit.aliveData.maxShield;
                var shieldRate = remainShiled / maxShiled;
                if (shieldRate > _tent2.triggerValue)
                {
                    // 需要满足护甲值低于触发值
                    continue;
                }
                var distance = map.TerrainGridSystem.CellGetHexagonDistance(owner.transData.cellIndex, searchUnit.transData.cellIndex);
                if (distance > _tent2.checkDistance)
                {
                    // 需要满足距离小于检测距离
                    continue;
                }
                return searchUnit;
            }
            return null;
        }
        
        private void _DoLogic()
        {
            var bulletId = _tent2.emitBulletId;
            var areaId = _tent2.areaId;

            // 根据作用区域筛选目标
            var selectIndexs = AreaManager.instance.GetCellIndexs(owner.transData.cellIndex, areaId);

            for (var i = 0; i < selectIndexs.Count; ++i)
            {
                var cellIndex = selectIndexs[i];
                BulletManager.instance.EmitBulletFromSummon(bulletId, cellIndex, _tent2);
            }

        }
    }
}