using System;
using System.Collections.Generic;

namespace AlicizaX.ObjectPool
{

    public abstract class ObjectPoolBase
    {
        private readonly string m_Name;

        public ObjectPoolBase() : this(null) { }

        public ObjectPoolBase(string name)
        {
            m_Name = name ?? string.Empty;
        }

        public string Name => m_Name;

        public string FullName => new TypeNamePair(ObjectType, m_Name).ToString();

        public abstract Type ObjectType { get; }
        public abstract int Count { get; }
        public abstract bool AllowMultiSpawn { get; }

        public abstract float AutoReleaseInterval { get; set; }
        public abstract int Capacity { get; set; }
        public abstract float ExpireTime { get; set; }
        public abstract int Priority { get; set; }


        public virtual int ReleasePerFrameBudget
        {
            get => 8;
            set { }
        }

        public abstract void Release();
        public abstract void Release(int toReleaseCount);
        public abstract void ReleaseAllUnused();

        public abstract ObjectInfo[] GetAllObjectInfos();
        public abstract void GetAllObjectInfos(List<ObjectInfo> results);

        internal abstract void Update(float elapseSeconds, float realElapseSeconds);
        internal abstract void Shutdown();

        internal virtual void OnLowMemory()
        {
            ReleaseAllUnused();
        }
    }
}