using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Management;
using System.Net;
using System.Net.NetworkInformation;

namespace DataUpdate
{
    class HardDiskPartition
    {
        #region 属性 --> 硬盘分区信息
        private string _PartitionName;
        private double _FreeSpace;
        private double _SumSpace;

        /// <summary>
        /// 分区可用空间
        /// </summary>
        public double FreeSpace
        {
            get { return _FreeSpace; }
            set { this._FreeSpace = value; }
        }

        /// <summary>
        /// 分区已使用空间
        /// </summary>
        public double UseSpace
        {
            get { return _SumSpace - _FreeSpace; }
        }

        /// <summary>
        /// 分区总空间
        /// </summary>
        public double SumSpace
        {
            get { return _SumSpace; }
            set { this._SumSpace = value; }
        }
        /// <summary>
        /// 分区名称
        /// </summary>
        public string PartitionName
        {
            get { return _PartitionName; }
            set { this._PartitionName = value; }
        }
        #endregion
    }
    public class ComputerInfoHelper
    {

        /// <summary>
        /// 获取开关机时间
        /// </summary>
        /// <param name="_LogName">系统日志名称</param>
        /// <param name="_EventID">事件ID</param>
        /// <returns></returns>
        public static DateTime GetLogDateTime(string _LogName, int _EventID)
        {
            List<DateTime> _list = new List<DateTime>();
            DateTime _datetime = DateTime.Parse("2000/01/01 00:00:00");
            EventLog el = new EventLog(_LogName);
            foreach (EventLogEntry l in el.Entries)
            {
                if (l.EventID == _EventID && l.TimeGenerated <= DateTime.Now)
                {
                    _list.Add(l.TimeGenerated);
                }
            }
            _datetime = _list.Max();
            return _datetime;
        }

        /// <summary>
        /// 获取物理网卡mac地址
        /// </summary>
        /// <returns></returns>
        public static string GetMacAddressByNetworkInformation()
        {
            string key = "SYSTEM\\CurrentControlSet\\Control\\Network\\{4D36E972-E325-11CE-BFC1-08002BE10318}\\";
            string macAddress = string.Empty;
            try
            {
                NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces();
                foreach (NetworkInterface adapter in nics)
                {
                    if (adapter.NetworkInterfaceType == NetworkInterfaceType.Ethernet
                    && adapter.GetPhysicalAddress().ToString().Length != 0)
                    {
                        string fRegistryKey = key + adapter.Id + "\\Connection";
                        RegistryKey rk = Registry.LocalMachine.OpenSubKey(fRegistryKey, false);
                        if (rk != null)
                        {
                            string fPnpInstanceID = rk.GetValue("PnpInstanceID", "").ToString();
                            int fMediaSubType = Convert.ToInt32(rk.GetValue("MediaSubType", 0));
                            if (fPnpInstanceID.Length > 3 &&
                            fPnpInstanceID.Substring(0, 3) == "PCI")
                            {
                                macAddress = adapter.GetPhysicalAddress().ToString();
                                for (int i = 1; i < 6; i++)
                                {
                                    macAddress = macAddress.Insert(3 * i - 1, ":");
                                }
                                break;
                            }
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                macAddress = string.Empty;
            }
            return macAddress;
        }
        /// <summary>
        /// 获取硬盘使用信息
        /// </summary>
        /// <returns></returns>
        private List<HardDiskPartition> GetDiskListInfo()
        {
            List<HardDiskPartition> list = null;
            try
            {
                SelectQuery selectQuery = new SelectQuery("select * from win32_logicaldisk");
                ManagementObjectSearcher searcher = new ManagementObjectSearcher(selectQuery);
                ManagementObjectCollection diskcollection = searcher.Get();
                if (diskcollection != null && diskcollection.Count > 0)
                {
                    list = new List<HardDiskPartition>();
                    HardDiskPartition harddisk = null;
                    foreach (ManagementObject disk in searcher.Get())
                    {
                        int nType = Convert.ToInt32(disk["DriveType"]);
                        if (nType != Convert.ToInt32(DriveType.Fixed))
                        {
                            continue;
                        }
                        else
                        {
                            harddisk = new HardDiskPartition();
                            harddisk.FreeSpace = Convert.ToDouble(disk["FreeSpace"]) / (1024 * 1024 * 1024);
                            harddisk.SumSpace = Convert.ToDouble(disk["Size"]) / (1024 * 1024 * 1024);
                            harddisk.PartitionName = disk["DeviceID"].ToString();
                            list.Add(harddisk);
                        }
                    }
                }
                return list;
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);
            }
        }

        public string GetHDIndex()
        {
            string HDInfo = "";
            ManagementClass manage = new ManagementClass("Win32_DiskDrive");
            ManagementObjectCollection moc1 = manage.GetInstances();
            foreach (ManagementObject mo in moc1)
            {
                HDInfo = (string)mo.Properties["Model"].Value;
            }
            return HDInfo;
        }

        /// <summary>
        /// 获取本地主机IP地址
        /// </summary>
        /// <returns>IP地址</returns>
        public static  string GetAddressIP()
        {
            string AddressIP = string.Empty;
            IPAddress[] addressList = Dns.GetHostEntry(Dns.GetHostName()).AddressList;
            for (int i = 0; i < addressList.Length; i++)
            {
                IPAddress _IPAddress = addressList[i];
                if (_IPAddress.AddressFamily.ToString() == "InterNetwork")
                {
                    AddressIP = _IPAddress.ToString();
                }
            }
            return AddressIP;
        }
    }
}