using CoreGame;
using Entitas;

namespace CoreGame.Render
{
    public class AttractorEndWaitCatchSystem : IExecuteSystem
    {
        private readonly IGroup<CombatEntity> m_AttractorGroup;

        public AttractorEndWaitCatchSystem(Contexts contexts)
        {
            var matcher = CombatMatcher.AllOf(CombatMatcher.Attractor, CombatMatcher.WaitPickUpDropItem);
            m_AttractorGroup = contexts.combat.GetGroup(matcher);
        }

        public void Execute(float deltaTime)
        {
            m_AttractorGroup.GetEntities(Contexts.s_CacheEntities);
            if (Contexts.s_CacheEntities.Count == 0)
                return;
            for (int i = 0; i < Contexts.s_CacheEntities.Count; i++)
            {
                var attractorEnt = Contexts.s_CacheEntities[i];
                if (attractorEnt.isDead)
                {
                    attractorEnt.RemoveWaitPickUpDropItem();
                    continue;
                }

                var attractorPos = attractorEnt.transformProxy.position;
                var range = attractorEnt.property.PickupRange;
                var waitPickUpDropItem = attractorEnt.waitPickUpDropItem;
                var targetDropItemEntity = Contexts.Combat.GetEntity(waitPickUpDropItem.dropItemEid);
                if (!targetDropItemEntity.IsValid() || !targetDropItemEntity.hasWaitToBeAttracted ||
                    targetDropItemEntity.hasBeAttracted)
                {
                    attractorEnt.RemoveWaitPickUpDropItem();
                }
                else
                {
                    var waitToBeAttracted = targetDropItemEntity.waitToBeAttracted;
                    if (waitToBeAttracted.pickUpRange > 0.001f)
                    {
                        range = waitToBeAttracted.pickUpRange;
                    }
                    var et = targetDropItemEntity.transformProxy;
                    var inAreaRange = (attractorPos - et.position).SqrMagnitude() < range * range;
                    if (inAreaRange)
                    {
                        waitPickUpDropItem.timeAcc += deltaTime;
                        if (waitPickUpDropItem.timeAcc < waitToBeAttracted.pickUpTime)
                            continue;
                        attractorEnt.RemoveWaitPickUpDropItem();
                        // targetDropItemEntity.AddBeAttracted(attractorEnt.creationIndex, et.position,
                        //     et.GetLocalScale().x, BattleConst.DropItemScale,
                        //     BattleConst.DropItemFlyDuration);
                    }
                    else
                    {
                        attractorEnt.RemoveWaitPickUpDropItem();
                    }
                }
            }
        }
    }
}