using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;

namespace AutoFileCopyNet
{
    /// <summary>
    /// 功能描述：C#实现访问网络共享文件夹，
    ///         使用 WNetAddConnection2A （在本地创建映射驱动器）和 WNetCancelConnection2A（卸载本地映射驱动器）。
    /// 作者：未知，摘自网络http://blog.csdn.net/aoyo/article/details/3939651
    /// 日期：2012-11-20
    /// added by sunguoqiang on 2012-11-20
    /// </summary>
    public class WNet
    {
        [DllImport("mpr.dll")]
        public static extern int WNetAddConnection2A(NETRESOURCE[] lpNetResource, string lpPassword, string lpUserName, int dwFlags);

        [DllImport("mpr.dll")]
        public static extern int WNetCancelConnection2A(string sharename, int dwFlags, int fForce);

        #region "public static int Connect(string remotePath, string localPath, string username, string password)"
        /// <summary>
        /// 连接共享服务器，并创建本地映射驱动器
        /// </summary>
        /// <param name="remotePath">共享文件夹路径</param>
        /// <param name="localPath">本地映射驱动器名次</param>
        /// <param name="username">网络帐户</param>
        /// <param name="password">访问密码</param>
        /// <returns>错误号</returns>
        public static int Connect(string remotePath, string localPath, string username, string password)
        {
              NETRESOURCE[] share_driver = new NETRESOURCE[1];
            share_driver[0].dwScope = RESOURCE_SCOPE.RESOURCE_GLOBALNET;
            share_driver[0].dwType =  RESOURCE_TYPE.RESOURCETYPE_DISK;
            share_driver[0].dwDisplayType = RESOURCE_DISPLAYTYPE.RESOURCEDISPLAYTYPE_SHARE;
            share_driver[0].dwUsage = RESOURCE_USAGE.RESOURCEUSAGE_CONNECTABLE;
            share_driver[0].lpLocalName = localPath;
            share_driver[0].lpRemoteName = remotePath;
            Disconnect(localPath);
            int ret = WNetAddConnection2A(share_driver, password, username,0);
            LogFileAccess.WriteLogFile("网络创建网络连接" + "---remotePath:" + remotePath + "--localPath:" + localPath + "--username:" + username + "--password:" + password + "---" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"));
            LogFileAccess.WriteLogFile("ret=" + ret + "----------------"+DateTime.Now.ToString("HH:mm:ss"));
            return ret;
        }
        #endregion

        #region "public static int Disconnect(string localpath)"
        /// <summary>
        /// 卸载本地映射驱动
        /// </summary>
        /// <param name="localpath">本地映射驱动名次</param>
        /// <returns>错误号</returns>
        public static int Disconnect(string localpath)
        {
            return WNetCancelConnection2A(localpath, 1, 1);
        }
        #endregion

    }

    #region "定义ENUM STRUCT"

    #region "public enum ERROR_ID 定义错误号"
    public enum ERROR_ID
    {
        ERROR_SUCCESS = 0,  // Success 
        ERROR_BUSY = 170,
        ERROR_MORE_DATA = 234,
        ERROR_NO_BROWSER_SERVERS_FOUND = 6118,
        ERROR_INVALID_LEVEL = 124,
        ERROR_ACCESS_DENIED = 5,
        ERROR_INVALID_PASSWORD = 86,
        ERROR_INVALID_PARAMETER = 87,
        ERROR_BAD_DEV_TYPE = 66,
        ERROR_NOT_ENOUGH_MEMORY = 8,
        ERROR_NETWORK_BUSY = 54,
        ERROR_BAD_NETPATH = 53,
        ERROR_NO_NETWORK = 1222,
        ERROR_INVALID_HANDLE_STATE = 1609,
        ERROR_EXTENDED_ERROR = 1208,
        ERROR_DEVICE_ALREADY_REMEMBERED = 1202,
        ERROR_NO_NET_OR_BAD_PATH = 1203
    }
    #endregion


    public enum RESOURCE_SCOPE
    {
        RESOURCE_CONNECTED = 1,
        RESOURCE_GLOBALNET = 2,
        RESOURCE_REMEMBERED = 3,
        RESOURCE_RECENT = 4,
        RESOURCE_CONTEXT = 5
    }



    public enum RESOURCE_TYPE
    {
        RESOURCETYPE_ANY = 0,
        RESOURCETYPE_DISK = 1,
        RESOURCETYPE_PRINT = 2,
        RESOURCETYPE_RESERVED = 8,
    }

    public enum RESOURCE_USAGE
    {
        RESOURCEUSAGE_CONNECTABLE = 1,
        RESOURCEUSAGE_CONTAINER = 2,
        RESOURCEUSAGE_NOLOCALDEVICE = 4,
        RESOURCEUSAGE_SIBLING = 8,
        RESOURCEUSAGE_ATTACHED = 16,
        RESOURCEUSAGE_ALL = (RESOURCEUSAGE_CONNECTABLE | RESOURCEUSAGE_CONTAINER | RESOURCEUSAGE_ATTACHED),
    }

    public enum RESOURCE_DISPLAYTYPE
    {
        RESOURCEDISPLAYTYPE_GENERIC = 0,
        RESOURCEDISPLAYTYPE_DOMAIN = 1,
        RESOURCEDISPLAYTYPE_SERVER = 2,
        RESOURCEDISPLAYTYPE_SHARE = 3,
        RESOURCEDISPLAYTYPE_FILE = 4,
        RESOURCEDISPLAYTYPE_GROUP = 5,
        RESOURCEDISPLAYTYPE_NETWORK = 6,
        RESOURCEDISPLAYTYPE_ROOT = 7,
        RESOURCEDISPLAYTYPE_SHAREADMIN = 8,
        RESOURCEDISPLAYTYPE_DIRECTORY = 9,
        RESOURCEDISPLAYTYPE_TREE = 10,
        RESOURCEDISPLAYTYPE_NDSCONTAINER = 11
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct NETRESOURCE
    {
        public RESOURCE_SCOPE dwScope;
        public RESOURCE_TYPE dwType;
        public RESOURCE_DISPLAYTYPE dwDisplayType;
        public RESOURCE_USAGE dwUsage;

        [MarshalAs(UnmanagedType.LPStr)]
        public string lpLocalName;

        [MarshalAs(UnmanagedType.LPStr)]
        public string lpRemoteName;

        [MarshalAs(UnmanagedType.LPStr)]
        public string lpComment;

        [MarshalAs(UnmanagedType.LPStr)]
        public string lpProvider;
    }
    #endregion

}