// Copyright (c) 2015, 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.Data;
using System.Configuration;
using System.Collections;
using System.IO;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using WebsitePanel.Providers.SharePoint;

namespace WebsitePanel.Portal
{
	public partial class HostedSharePointBackupSiteCollection : WebsitePanelModuleBase
	{
		private const string BACKUP_EXTENSION = ".bsh";

		private int OrganizationId
		{
			get
			{
				return PanelRequest.GetInt("ItemID");
			}
		}

		private int SiteCollectionId
		{
			get
			{
				return PanelRequest.GetInt("SiteCollectionID");
			}
		}


		protected void Page_Load(object sender, EventArgs e)
		{
			if (!IsPostBack)
			{
				BindSite();
			}
		}

		private void BindSite()
		{
			try
			{
				SharePointSiteCollection siteCollection = ES.Services.HostedSharePointServers.GetSiteCollection(this.SiteCollectionId);
				litSiteCollectionName.Text = siteCollection.PhysicalAddress;
				txtBackupName.Text = siteCollection.Url + BACKUP_EXTENSION;
				fileLookup.SelectedFile = "\\";
				fileLookup.PackageId = siteCollection.PackageId;

				BindBackupName();
				ToggleControls();
			}
			catch (Exception ex)
			{
				ShowErrorMessage("SHAREPOINT_GET_SITE", ex);
				return;
			}
		}

		private void BindBackupName()
		{
			string backupName = Path.GetFileNameWithoutExtension(txtBackupName.Text);
			txtBackupName.Text = backupName + (chkZipBackup.Checked ? ".zip" : BACKUP_EXTENSION);
		}

		private void ToggleControls()
		{
			fileLookup.Visible = rbCopy.Checked;
		}

		private void BackupSiteCollection()
		{
			try
			{
                string bakFile = ES.Services.HostedSharePointServers.BackupSiteCollection(this.SiteCollectionId,
					txtBackupName.Text, chkZipBackup.Checked, rbDownload.Checked, fileLookup.SelectedFile);

				if (rbDownload.Checked && !String.IsNullOrEmpty(bakFile))
				{

                    string fileName = bakFile;
                    
					//Response.Clear();
					Response.AddHeader("Content-Disposition", "attachment; filename=" + Path.GetFileName(fileName));
					Response.ContentType = "application/octet-stream";

					int FILE_BUFFER_LENGTH = 5000000;
					byte[] buffer = null;
					int offset = 0;
					do
					{
						// Read remote content.
						buffer = ES.Services.HostedSharePointServers.GetBackupBinaryChunk(this.SiteCollectionId, fileName, offset, FILE_BUFFER_LENGTH);

						// Write to stream.
						//Response.BinaryWrite(buffer);
                        Response.OutputStream.Write(buffer, 0, buffer.Length);
						offset += FILE_BUFFER_LENGTH;
					}
					while (buffer.Length == FILE_BUFFER_LENGTH);

                    Response.Flush();
                    Response.End();
                    //Response.Close();
                    //HttpContext.Current.ApplicationInstance.CompleteRequest();
                    //Response.End();
                    
                }
			}
			catch (Exception ex)
			{
				ShowErrorMessage("SHAREPOINT_BACKUP_SITE", ex);
                return;
			}
            //Response.ClearContent();
		    Context.Response.Clear();
            if (!rbDownload.Checked)
                RedirectBack();
            
		}

		protected void btnBackup_Click(object sender, EventArgs e)
		{
            BackupSiteCollection();
		}
		protected void btnCancel_Click(object sender, EventArgs e)
		{
			RedirectBack();
		}

		private void RedirectBack()
		{
			HttpContext.Current.Response.Redirect(EditUrl("SpaceID", PanelSecurity.PackageId.ToString(), "sharepoint_edit_sitecollection", "SiteCollectionID=" + this.SiteCollectionId, "ItemID=" + PanelRequest.ItemID.ToString()));
		}

		protected void chkZipBackup_CheckedChanged(object sender, EventArgs e)
		{
			BindBackupName();
		}

		protected void rbDownload_CheckedChanged(object sender, EventArgs e)
		{
			ToggleControls();
		}

        protected override void OnPreRender(EventArgs e)
        {
            string str = string.Format("var rb = document.getElementById('{0}'); if (!rb.checked) ShowProgressDialog('Backing up site collection...');", rbDownload.ClientID);
            
                
                
            btnBackup.Attributes.Add("onclick", str);
            base.OnPreRender(e);
        }

	}
}