#if DEBUG && !PROFILER
using System.Collections.Generic;
using Svelto.DataStructures;
#else
using System.Diagnostics;
#endif

namespace Svelto.ECS
{
    public partial class EnginesRoot
    {
#if DEBUG && !PROFILER        
        void CheckRemoveEntityID(EGID egid)
        {
     //       Console.LogError("<color=orange>removed</color>".FastConcat(egid.ToString()));
            if (_idCheckers.TryGetValue(egid.groupID, out var hash))
            {
                if (hash.Contains(egid.entityID) == false)
                    throw new ECSException("Entity with not found ID is about to be removed: id: "
                        .FastConcat(egid.entityID)
                        .FastConcat(" groupid: ")
                        .FastConcat(egid.groupID));

                hash.Remove(egid.entityID);

                if (hash.Count == 0)
                    _idCheckers.Remove(egid.groupID);
            }
            else
            {
                throw new ECSException("Entity with not found ID is about to be removed: id: "
                    .FastConcat(egid.entityID)
                    .FastConcat(" groupid: ")
                    .FastConcat(egid.groupID));
            }
        }

        void CheckAddEntityID(EGID egid)
        {
//            Console.LogError("<color=orange>added</color> ".FastConcat(egid.ToString()));
            
            if (_idCheckers.TryGetValue(egid.groupID, out var hash) == false)
                hash = _idCheckers[egid.groupID] = new HashSet<uint>();
            else
            {
                if (hash.Contains(egid.entityID))
                    throw new ECSException("Entity with used ID is about to be built: '"
                        .FastConcat("' id: '")
                        .FastConcat(egid.entityID)
                        .FastConcat("' groupid: '")
                        .FastConcat(egid.groupID)
                        .FastConcat("'"));
            }

            hash.Add(egid.entityID);
        }
        
        void RemoveGroupID(ExclusiveGroup.ExclusiveGroupStruct groupID)
        {
            _idCheckers.Remove(groupID);
        }

        readonly FasterDictionary<uint, HashSet<uint>> _idCheckers = new FasterDictionary<uint, HashSet<uint>>();
#else
        [Conditional("_CHECKS_DISABLED")]
        void CheckRemoveEntityID(EGID egid)
        {
        }

        [Conditional("_CHECKS_DISABLED")]
        void CheckAddEntityID(EGID egid)
        {
        }
        
        [Conditional("_CHECKS_DISABLED")]
        void RemoveGroupID(ExclusiveGroup.ExclusiveGroupStruct groupID)
        {
        }
#endif
    }
}