using System;
using System.Collections.Generic;
using System.Linq;
using System.Management;
using System.Net.NetworkInformation;
using System.Text;
using System.Threading.Tasks;

namespace CnasSynchronousCommon
{
    public  class MachieCodeHelper
    {
        public static string GetMachineCode()
        {
            StringBuilder machineCode = new StringBuilder();

            // 获取CPU ID
            string cpuId = GetCPUId();
            machineCode.Append(cpuId);

            // 获取所有MAC地址
            List<string> macAddresses = GetMACAddresses();
            foreach (string mac in macAddresses)
            {
                machineCode.Append("_").Append(mac);
            }

            return machineCode.ToString();
        }

        private static string GetCPUId()
        {
            try
            {
                using (ManagementClass mc = new ManagementClass("Win32_Processor"))
                {
                    ManagementObjectCollection moc = mc.GetInstances();
                    foreach (ManagementObject mo in moc)
                    {
                        return mo.Properties["ProcessorId"].Value.ToString();
                    }
                }
            }
            catch (Exception ex)
            {
                throw new Exception("获取CPU ID失败: " + ex.Message);
            }
            return string.Empty;
        }

        private static List<string> GetMACAddresses()
        {
            List<string> macAddresses = new List<string>();
            try
            {
                NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces();
                // 优先选择以太网卡
                var ethernetAdapter = nics.FirstOrDefault(adapter =>
                    adapter.NetworkInterfaceType == NetworkInterfaceType.Ethernet &&
                    !string.IsNullOrEmpty(adapter.GetPhysicalAddress().ToString()));

                // 如果没有以太网卡，则选择无线网卡
                var selectedAdapter = ethernetAdapter ?? nics.FirstOrDefault(adapter =>
                    adapter.NetworkInterfaceType == NetworkInterfaceType.Wireless80211 &&
                    !string.IsNullOrEmpty(adapter.GetPhysicalAddress().ToString()));

                if (selectedAdapter != null)
                {
                    string mac = selectedAdapter.GetPhysicalAddress().ToString();
                    if (!string.IsNullOrEmpty(mac))
                    {
                        macAddresses.Add(mac);
                    }
                }
            }
            catch (Exception ex)
            {
                throw new Exception("获取MAC地址失败: " + ex.Message);
            }
            return macAddresses;
        }
    }
}