using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Management;
using System.Net.NetworkInformation;
using System.Runtime.InteropServices;
using System.Text;

namespace CnasSynchronousCommon
{
    public class ComputeMessage
    {
        /// <summary>
        /// 获取本地MAC地址
        /// </summary>
        /// <returns></returns>
        public static string getLocalMac(ref string strErrorMsg)
        {
            string madAddr = null;
            List<string> lstMacs = new List<string>();
            try
            {
                string strMethod=ConfigurationManager.AppSettings["GetMacMethod"].ToString();
                switch (strMethod)
                {
                    case "2":
                        lstMacs=GetMacByIPConfig();
                        if (lstMacs.Count > 0)
                            madAddr = lstMacs[0];
                        break;
                    case "3":
                        lstMacs = GetMacByNetworkInterface();
                        if (lstMacs.Count > 0)
                            madAddr = lstMacs[0];
                        break;
                    case "1":
                    default:
                        ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
                        ManagementObjectCollection moc2 = mc.GetInstances();
                        foreach (ManagementObject mo in moc2)
                        {
                            if (Convert.ToBoolean(mo["IPEnabled"]) == true)
                            {
                                madAddr = mo["MacAddress"].ToString();
                                madAddr = madAddr.Replace(':', '-');
                            }
                            mo.Dispose();
                        }
                        break;
                }
                
                if (madAddr == null)
                {
                    strErrorMsg = "未能成功获得本机网卡的物理地址";
                    AppLog.Error($"没有找到本地网卡的物理地址");
                    return "unknown";
                }
            }
            catch (Exception ex)
            {
                //这里写异常的处理 
                strErrorMsg = "未能成功获得本机网卡的物理地址";
                AppLog.Error($"没有找到本地网卡的物理地址,{ex.Message}");
            }
            return madAddr;
        }


        ///<summary>
        /// 根据截取ipconfig /all命令的输出流获取网卡Mac
        ///</summary>
        ///<returns></returns>
        public static List<string> GetMacByIPConfig()
        {
            List<string> macs = new List<string>();
            ProcessStartInfo startInfo = new ProcessStartInfo("ipconfig", "/all");
            startInfo.UseShellExecute = false;
            startInfo.RedirectStandardInput = true;
            startInfo.RedirectStandardOutput = true;
            startInfo.RedirectStandardError = true;
            startInfo.CreateNoWindow = true;
            Process p = Process.Start(startInfo);
            //截取输出流
            StreamReader reader = p.StandardOutput;
            string line = reader.ReadLine();

            while (!reader.EndOfStream)
            {
                if (!string.IsNullOrEmpty(line))
                {
                    line = line.Trim();

                    if (line.StartsWith("Physical Address")|| line.StartsWith("物理地址"))
                    {
                        if(!macs.Contains(line))
                            macs.Add(line);
                    }
                }

                line = reader.ReadLine();
            }

            //等待程序执行完退出进程
            p.WaitForExit();
            p.Close();
            reader.Close();

            return macs;
        }

        ///<summary>
        /// 通过NetworkInterface读取网卡Mac
        ///</summary>
        ///<returns></returns>
        public static List<string> GetMacByNetworkInterface()
        {
            List<string> macs = new List<string>();
            NetworkInterface[] interfaces = NetworkInterface.GetAllNetworkInterfaces();
            foreach (NetworkInterface ni in interfaces)
            {
                if(!macs.Contains(ni.GetPhysicalAddress().ToString()))
                    macs.Add(ni.GetPhysicalAddress().ToString());
            }
            return macs;
        }       
    }
}