using System;
using System.Collections.Generic;
using System.Text;
using System.Threading;

namespace Thousandto.Code.Logic
{
    /// <summary>
    /// 生产者消费者模型线程池
    /// </summary>
    public class ChatThreadPool
    {
        //处理函数，处理数据
        public delegate void HandleFunc(MSG_Chat.ChatResSC nodes);
        //处理完成回调
        public delegate MSG_Chat.ChatResSC FinishCallback(); 

        //待处理的数据
        private Queue<MSG_Chat.ChatResSC> _dataQueue;
        //是否工作
        private bool _working;
        //线程个数
        private int _threadNum = 1;
        
        //处理函数
        private HandleFunc _handleFunc;
        //完成回调
        private FinishCallback _finishCallback;

        private List<Thread> _threadList;

        //构造函数
        public ChatThreadPool()
        {
            _working = true;
            _dataQueue = new Queue<MSG_Chat.ChatResSC>();
            _threadList = new List<Thread>();

            //创建线程
            for (int i = 0; i < _threadNum; ++i)
            {
                Thread workThread = new Thread(workFactory);
                workThread.IsBackground = true;
                workThread.Start();
                

                _threadList.Add(workThread);
            }
        }

        public void Destory()
        {
            _working = false;
            _dataQueue.Clear();
            _threadList.Clear();
        }

        public void SetHandleFunc(HandleFunc func)
        {
            _handleFunc = func;
        }

        public void SetFinishFunc(FinishCallback func)
        {
            _finishCallback = func;
        }

        /// <summary>
        /// 是否有线程存活
        /// </summary>
        /// <returns></returns>
        public bool Running()
        {
            for (int i = 0; i < _threadList.Count; ++i)
            {
                if (_threadList[i].IsAlive)
                {
                    return true;
                }
            }

            return false;
        }

        /// <summary>
        /// 放入数据
        /// </summary>
        /// <param name="data"></param>
        public void AddData(MSG_Chat.ChatResSC data)
        {
            _dataQueue.Enqueue(data);
        }

        /// <summary>
        /// 线程取数据
        /// </summary>
        /// <returns></returns>
        private MSG_Chat.ChatResSC getData()
        {
            lock (_dataQueue)
            {
                if (_dataQueue != null && _dataQueue.Count > 0)
                {
                    return _dataQueue.Dequeue();
                }
                return null;
            }
        }


        private void workFactory()
        {
            while (_working)
            {
                Thread.Sleep(100);

                MSG_Chat.ChatResSC data = getData();

                if (_handleFunc != null)
                {
                    _handleFunc(data);
                }
                if (_finishCallback != null)
                {
                    _finishCallback();
                }
            }
        }
    }
}