using System.Collections.Concurrent;
using System.Collections.Generic;

namespace SamplePre.Common
{
    public class ConcurrentQueueExt<T>
    {

        private readonly ConcurrentQueue<T> queue = new ConcurrentQueue<T>();

        public void Enqueue(T msgData)
        {
            if (msgData != null)
            {
                queue.Enqueue(msgData);
            }
        }

        //public void Enqueue(List<T> msgDatas)
        //{
        //    if (msgDatas.IsNullOrEmpty()) return;
        //    foreach (var msgData in msgDatas)
        //    {
        //        queue.Enqueue(msgData);
        //    }
        //}

        public T GetOne()
        {
            if (queue.TryDequeue(out T result))
            {
                return result;
            }
            else
            {
                return default;
            }
        }

        public List<T> GetAll()
        {
            List<T> result = new List<T>();
            int count = queue.Count;
            if (count > 0)
            {
                for (int i = 0; i < count; i++)
                {
                    if (queue.TryDequeue(out T t))
                    {
                        result.Add(t);
                    }
                }
            }
            return result;
        }


        public void Clear()
        {
            while (!queue.IsEmpty)
            {
                queue.TryDequeue(out _);
            }
        }

        public int Count
        {
            get
            {
                return queue.Count;
            }
        }

    }
}