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

namespace DoAn.PLC
{
    public class Host
    {
        Dictionary<string, TagServer> _lstTagServer;

        public Host()
        {
            this._lstTagServer = new Dictionary<string, TagServer>();
        }

        /// <summary>
        /// 创建一个PLC服务
        /// </summary>
        /// <param name="hostIp"></param>
        /// <returns></returns>
        public TagServer CreateTagServer(string hostIp)
        {
            if (GetTagServerByIp(hostIp) != null) return null;

            // 用带IP地址创建对象
            TagServer tagServer = new TagServer(hostIp);

            AddTagServer(hostIp, tagServer);
            return tagServer;
        }

        private void AddTagServer(string hostIp,TagServer tagServer)
        {
            this._lstTagServer.Add(hostIp, tagServer);
        }

        /// <summary>
        /// 根据IP返回一个PLC服务
        /// </summary>
        /// <param name="hostIp"></param>
        /// <returns></returns>
        public TagServer GetTagServerByIp(string hostIp)
        {
            return this._lstTagServer.ContainsKey(hostIp) ? this._lstTagServer[hostIp] : null;
        }

        /// <summary>
        /// 关闭所有
        /// </summary>
        public void CloseConnect()
        {
            foreach (KeyValuePair<string,TagServer> item in this._lstTagServer)
            {
                item.Value.DisconnectPLC();
            }
        }
    }
}