// Copyright (c) 2012, Outercurve Foundation.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// - Redistributions of source code must  retain  the  above copyright notice, this
//   list of conditions and the following disclaimer.
//
// - Redistributions in binary form  must  reproduce the  above  copyright  notice,
//   this list of conditions  and  the  following  disclaimer in  the documentation
//   and/or other materials provided with the distribution.
//
// - Neither  the  name  of  the  Outercurve Foundation  nor   the   names  of  its
//   contributors may be used to endorse or  promote  products  derived  from  this
//   software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,  BUT  NOT  LIMITED TO, THE IMPLIED
// WARRANTIES  OF  MERCHANTABILITY   AND  FITNESS  FOR  A  PARTICULAR  PURPOSE  ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
// ANY DIRECT, INDIRECT, INCIDENTAL,  SPECIAL,  EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO,  PROCUREMENT  OF  SUBSTITUTE  GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)  HOWEVER  CAUSED AND ON
// ANY  THEORY  OF  LIABILITY,  WHETHER  IN  CONTRACT,  STRICT  LIABILITY,  OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE)  ARISING  IN  ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

using System;
using System.Collections.Generic;
using System.Text;

using Microsoft.Web.Services3;
using WebsitePanel.EnterpriseServer;
using WebsitePanel.EnterpriseServer.HostedSolution;

namespace WebsitePanel.Setup
{
	public class ServerContext
	{
		public string Server { get; set; }
		public string Username { get; set; }
		public string Password { get; set; }
	}
	/// <summary>
	/// ES Proxy class
	/// </summary>
	public class ES
	{
		public const int ERROR_USER_WRONG_PASSWORD = -110;
		public const int ERROR_USER_WRONG_USERNAME = -109;
		public const int ERROR_USER_ACCOUNT_CANCELLED = -105;
		public const int ERROR_USER_ACCOUNT_DEMO = -106;
		public const int ERROR_USER_ACCOUNT_PENDING = -103;
		public const int ERROR_USER_ACCOUNT_SHOULD_BE_ADMINISTRATOR = -107;
		public const int ERROR_USER_ACCOUNT_SHOULD_BE_RESELLER = -108;
		public const int ERROR_USER_ACCOUNT_SUSPENDED = -104;

		private static ServerContext serverContext = null;

		private static void InitializeServices(ServerContext context)
		{
			serverContext = context;
		}
		
		public static bool Connect(string server, string username, string password)
		{
			bool ret = true;
			ServerContext serverContext = new ServerContext();
			serverContext.Server = server;
			serverContext.Username = username;
			serverContext.Password = password;

			InitializeServices(serverContext);
			int status = -1;
			try
			{
				status = ES.Services.Authentication.AuthenticateUser(serverContext.Username, serverContext.Password, null);
			}
			catch (Exception ex)
			{
				Log.WriteError("Authentication error", ex);
				return false;
			}

			string errorMessage = "Check your internet connection or server URL.";
			if (status != 0)
			{
				switch (status)
				{
					case ERROR_USER_WRONG_USERNAME:
						errorMessage = "Wrong username.";
						break;
					case ERROR_USER_WRONG_PASSWORD:
						errorMessage = "Wrong password.";
						break;
					case ERROR_USER_ACCOUNT_CANCELLED:
						errorMessage = "Account cancelled.";
						break;
					case ERROR_USER_ACCOUNT_PENDING:
						errorMessage = "Account pending.";
						break;
				}
				Log.WriteError(
					string.Format("Cannot connect to the remote server. {0}", errorMessage));
				ret = false;
			}
			return ret;
		}

		public static ES Services
		{
			get
			{
				return new ES();
			}
		}

		public esSystem System
		{
			get { return GetCachedProxy<esSystem>(); }
		}

		public esApplicationsInstaller ApplicationsInstaller
		{
			get { return GetCachedProxy<esApplicationsInstaller>(); }
		}

		public esAuditLog AuditLog
		{
			get { return GetCachedProxy<esAuditLog>(); }
		}

		public esAuthentication Authentication
		{
			get { return GetCachedProxy<esAuthentication>(false); }
		}

		public esComments Comments
		{
			get { return GetCachedProxy<esComments>(); }
		}

		public esDatabaseServers DatabaseServers
		{
			get { return GetCachedProxy<esDatabaseServers>(); }
		}

		public esFiles Files
		{
			get { return GetCachedProxy<esFiles>(); }
		}

		public esFtpServers FtpServers
		{
			get { return GetCachedProxy<esFtpServers>(); }
		}

		public esMailServers MailServers
		{
			get { return GetCachedProxy<esMailServers>(); }
		}

		public esOperatingSystems OperatingSystems
		{
			get { return GetCachedProxy<esOperatingSystems>(); }
		}

		public esPackages Packages
		{
			get { return GetCachedProxy<esPackages>(); }
		}

		public esScheduler Scheduler
		{
			get { return GetCachedProxy<esScheduler>(); }
		}

		public esTasks Tasks
		{
			get { return GetCachedProxy<esTasks>(); }
		}

		public esServers Servers
		{
			get { return GetCachedProxy<esServers>(); }
		}

		public esStatisticsServers StatisticsServers
		{
			get { return GetCachedProxy<esStatisticsServers>(); }
		}

		public esUsers Users
		{
			get { return GetCachedProxy<esUsers>(); }
		}

		public esWebServers WebServers
		{
			get { return GetCachedProxy<esWebServers>(); }
		}

		public esSharePointServers SharePointServers
		{
			get { return GetCachedProxy<esSharePointServers>(); }
		}

		public esImport Import
		{
			get { return GetCachedProxy<esImport>(); }
		}

		public esBackup Backup
		{
			get { return GetCachedProxy<esBackup>(); }
		}

		public esExchangeServer ExchangeServer
		{
			get { return GetCachedProxy<esExchangeServer>(); }
		}

		public esOrganizations Organizations
		{
			get { return GetCachedProxy<esOrganizations>(); }
		}

		protected ES()
		{
		}

		protected virtual T GetCachedProxy<T>()
		{
			return GetCachedProxy<T>(true);
		}

		protected virtual T GetCachedProxy<T>(bool secureCalls)
		{
			if (serverContext == null)
			{
				throw new Exception("Server context is not specified");
			}

			Type t = typeof(T);
			string key = t.FullName + ".ServiceProxy";
			T proxy = (T)Activator.CreateInstance(t);

			object p = proxy;

			// configure proxy
			EnterpriseServerProxyConfigurator cnfg = new EnterpriseServerProxyConfigurator();
			cnfg.EnterpriseServerUrl = serverContext.Server;
			if (secureCalls)
			{
				cnfg.Username = serverContext.Username;
				cnfg.Password = serverContext.Password;
			}

			cnfg.Configure((WebServicesClientProtocol)p);

			return proxy;
		}
	}
}