using System.Collections;
using System;
using System.Collections.Generic;
using Facepunch;
using UnityEngine;

namespace Oxide.Plugins
{
    [Info("Null Save List", "ViolationHandler", "0.0.1")]
    [Description("Removes nulls on Save List via command.")]
    public class NullSaveList : RustPlugin
    {
        [ConsoleCommand("clearnullsave")]
        private void ClearNullSaveCommand(ConsoleSystem.Arg arg)
        {
            HashSet<BaseEntity> saveList = BaseEntity.saveList;
            List<BaseEntity> list = Pool.GetList<BaseEntity>();
            BasePlayer player = arg?.Connection?.player as BasePlayer;
            if (!arg.IsRcon || (player != null && player?.net?.connection.authLevel < 2))
            {
                player.ChatMessage("No Perms.");
                return;
            }
            try
            {
                foreach (BaseEntity entity in saveList)
                {
                    if (entity == null || entity.IsDestroyed) list.Add(entity);
                }

                foreach (BaseEntity entity in list)
                {
                    saveList.Remove(entity);
                }

                string reply;
                if(list.Count == 0)
                    reply = "There were 0 null entities in Save List.";
                else
                    reply = $"Sucessfully removed {list.Count} null entites from Save List.";
                if (arg.IsRcon)
                {
                    Debug.Log(reply);
                    return;
                }
                player.ChatMessage(reply);
            }
            catch (Exception e)
            {
                Debug.LogError(e);
                return;
            }
            finally
            {
                Pool.FreeList(ref list);
            }
        }
    }
}