using System;
using System.ComponentModel;
using System.Net;
using System.Runtime.InteropServices;

namespace SteamWare
{
    /// <summary>
    /// Helper x gestione accesso device di rete
    /// </summary>
    public class NetworkConnection : IDisposable
    {
        string _networkName;

        /// <summary>
        /// Init classe
        /// </summary>
        /// <param name="networkName"></param>
        /// <param name="credentials"></param>
        public NetworkConnection(string networkName, NetworkCredential credentials)
        {
            _networkName = networkName;

            var netResource = new NetResource()
            {
                Scope = ResourceScope.GlobalNetwork,
                ResourceType = ResourceType.Disk,
                DisplayType = ResourceDisplaytype.Share,
                RemoteName = networkName
            };

            var userName = string.IsNullOrEmpty(credentials.Domain)
                ? credentials.UserName
                : string.Format(@"{0}\{1}", credentials.Domain, credentials.UserName);

            var result = WNetAddConnection2(
                netResource,
                credentials.Password,
                userName,
                0);

            if (result != 0)
            {
                throw new Win32Exception(result);
            }
        }

        /// <summary>
        /// Dispose classe
        /// </summary>
        ~NetworkConnection()
        {
            Dispose(false);
        }
        /// <summary>
        /// Dispose classe
        /// </summary>
        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);
        }
        /// <summary>
        /// Dispose classe
        /// </summary>
        /// <param name="disposing"></param>
        protected virtual void Dispose(bool disposing)
        {
            WNetCancelConnection2(_networkName, 0, true);
        }

        [DllImport("mpr.dll")]
        private static extern int WNetAddConnection2(NetResource netResource,
            string password, string username, int flags);

        [DllImport("mpr.dll")]
        private static extern int WNetCancelConnection2(string name, int flags,
            bool force);
    }

    /// <summary>
    /// 
    /// </summary>
    [StructLayout(LayoutKind.Sequential)]
    public class NetResource
    {
        /// <summary>
        /// Scope delal risorsa
        /// </summary>
        public ResourceScope Scope;
        /// <summary>
        /// TIpo di risorsa
        /// </summary>
        public ResourceType ResourceType;
        /// <summary>
        /// Tipèo display
        /// </summary>
        public ResourceDisplaytype DisplayType;
        /// <summary>
        /// Impiego
        /// </summary>
        public int Usage;
        /// <summary>
        /// Nome locale
        /// </summary>
        public string LocalName;
        /// <summary>
        /// Nome remoto
        /// </summary>
        public string RemoteName;
        /// <summary>
        /// Commento
        /// </summary>
        public string Comment;
        /// <summary>
        /// Provider
        /// </summary>
        public string Provider;
    }

    /// <summary>
    /// Enum Scope della risorsa
    /// </summary>
    public enum ResourceScope : int
    {
        /// <summary>
        /// connessa
        /// </summary>
        Connected = 1,
        /// <summary>
        /// rete globale
        /// </summary>
        GlobalNetwork,
        /// <summary>
        /// memorizzata
        /// </summary>
        Remembered,
        /// <summary>
        /// recente
        /// </summary>
        Recent,
        /// <summary>
        /// contesto
        /// </summary>
        Context
    };
    /// <summary>
    /// Enum tipo res
    /// </summary>
    public enum ResourceType : int
    {
        /// <summary>
        /// Qualsiasi
        /// </summary>
        Any = 0,
        /// <summary>
        /// Disco
        /// </summary>
        Disk = 1,
        /// <summary>
        /// Printer
        /// </summary>
        Print = 2,
        /// <summary>
        /// Riservato
        /// </summary>
        Reserved = 8,
    }
    /// <summary>
    /// Enum tipo display
    /// </summary>
    public enum ResourceDisplaytype : int
    {
        /// <summary>
        /// Generico
        /// </summary>
        Generic = 0x0,
        /// <summary>
        /// Dominio
        /// </summary>
        Domain = 0x01,
        /// <summary>
        /// Server
        /// </summary>
        Server = 0x02,
        /// <summary>
        /// COndivisione
        /// </summary>
        Share = 0x03,
        /// <summary>
        /// File
        /// </summary>
        File = 0x04,
        /// <summary>
        /// Gruppo
        /// </summary>
        Group = 0x05,
        /// <summary>
        /// Rete
        /// </summary>
        Network = 0x06,
        /// <summary>
        /// Radice
        /// </summary>
        Root = 0x07,
        /// <summary>
        /// Share admin
        /// </summary>
        Shareadmin = 0x08,
        /// <summary>
        /// Cartella
        /// </summary>
        Directory = 0x09,
        /// <summary>
        /// Albero
        /// </summary>
        Tree = 0x0a,
        /// <summary>
        /// NDS container
        /// </summary>
        Ndscontainer = 0x0b
    }
}