// 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.IO;
using System.Collections.Generic;
using System.Text;
using Microsoft.Win32;

using WebsitePanel.Server.Utils;
using WebsitePanel.Providers.Utils;
using WebsitePanel.Providers.OS;
using WebsitePanel.Providers.Common;


namespace WebsitePanel.Providers.RemoteDesktopServices
{
    public class Windows2012 : HostingServiceProviderBase
    {

        #region Properties
        protected string UsersHome
        {
            get { return FileUtils.EvaluateSystemVariables(ProviderSettings[Constants.UsersHome]); }
        }
        #endregion


        #region HostingServiceProvider methods
        public override string[] Install()
        {
            List<string> messages = new List<string>();

            // create folder if it not exists
            try
            {
                if (!FileUtils.DirectoryExists(UsersHome))
                {
                    FileUtils.CreateDirectory(UsersHome);
                }
            }
            catch (Exception ex)
            {
                messages.Add(String.Format("Folder '{0}' could not be created: {1}",
                    UsersHome, ex.Message));
            }
            return messages.ToArray();
        }

        public override void DeleteServiceItems(ServiceProviderItem[] items)
        {
            foreach (ServiceProviderItem item in items)
            {
                try
                {
                    if (item is HomeFolder)
                        // delete home folder
                        FileUtils.DeleteFile(item.Name);
                }
                catch (Exception ex)
                {
                    Log.WriteError(String.Format("Error deleting '{0}' {1}", item.Name, item.GetType().Name), ex);
                }
            }
        }

        public override ServiceProviderItemDiskSpace[] GetServiceItemsDiskSpace(ServiceProviderItem[] items)
        {
            List<ServiceProviderItemDiskSpace> itemsDiskspace = new List<ServiceProviderItemDiskSpace>();
            foreach (ServiceProviderItem item in items)
            {
                if (item is HomeFolder)
                {
                    try
                    {
                        string path = item.Name;

                        Log.WriteStart(String.Format("Calculating '{0}' folder size", path));

                        // calculate disk space
                        ServiceProviderItemDiskSpace diskspace = new ServiceProviderItemDiskSpace();
                        diskspace.ItemId = item.Id;
                        diskspace.DiskSpace = FileUtils.CalculateFolderSize(path);
                        itemsDiskspace.Add(diskspace);

                        Log.WriteEnd(String.Format("Calculating '{0}' folder size", path));
                    }
                    catch (Exception ex)
                    {
                        Log.WriteError(ex);
                    }
                }
            }
            return itemsDiskspace.ToArray();
        }
        #endregion

        public override bool IsInstalled()
        {
            // TODO: Remove it.
            return true;

            Server.Utils.OS.WindowsVersion version = WebsitePanel.Server.Utils.OS.GetVersion();
            return version == WebsitePanel.Server.Utils.OS.WindowsVersion.WindowsServer2012;
        }
    }
}