using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Globalization;
using RepositoryMG;

namespace Repository
{
	/// <summary>
	/// <p>Displays archive list and allows selecting subscribed archives.<br/>
	/// Calls RepoSubs.</p>
	/// Methods created or modified:<ul>
	/// <li>Page_Load</li>
	/// <li>bind</li>
	/// <li>Form1_refresh</li>
	/// </ul>
	/// <p>Copyright (c) 2002 Alexis Grandemange<br/>
	/// Mail: alexis.grandemange@pagebox.net</p>
	/// <pre>This program is free software; you can redistribute it and/or
	/// modify it under the terms of the GNU Lesser General Public
	/// License as published by the Free Software Foundation; version
	/// 2.1 of the License.
	/// This library is distributed in the hope that it will be useful,
	/// but WITHOUT ANY WARRANTY; without even the implied warranty of
	/// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	/// GNU Lesser General Public License for more details.
	/// A copy of the GNU Lesser General Public License lesser.txt should be
	/// included in the distribution.</pre>
	/// </summary>
	public class aselect : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.HyperLink logo;
		protected System.Web.UI.WebControls.Label SubscriberLab;
		protected System.Web.UI.WebControls.Button BtnRefresh;
		protected System.Web.UI.WebControls.Label Subscriber;
		protected System.Web.UI.WebControls.Label LabStatus;
		protected System.Web.UI.WebControls.Label Snapshot;
		protected System.Web.UI.WebControls.HyperLink Support;
		protected MultiGrid archiveDB;
	
		public aselect()
		{
			Page.Init += new System.EventHandler(Page_Init);
		}

		/// <summary>
		/// Called on Page load event.
		/// Builds a list of archives and binds it to archiveDB (DataGrid).
		/// </summary>
		private void Page_Load(object sender, System.EventArgs e)
		{
			if (!IsPostBack) 
			{
				Subscriber.Text = Request.QueryString["subscriber"];
				if (Subscriber.Text.Length == 0) 
				{
					LabStatus.Text = "Subscriber not set";
					return;
				}
				if (!Global.subRep.asubscribers.Contains(Subscriber.Text))
				{
					LabStatus.Text = Subscriber.Text + " is not an archive subscriber";
					return;
				}
				bind(Subscriber.Text);
			}
		}
		/// <summary>
		/// Enumerates archives and identify archives already subscribed
		/// </summary>
		/// <param name="s">Archive subscriber</param>
		private void bind(string s)
		{
			Subscriber su = (Subscriber)Global.subRep.asubscribers[s];
			ArrayList al = new ArrayList();
			IDictionaryEnumerator ide = Global.archRep.archives.GetEnumerator();
			string sn = null;
			while(ide.MoveNext()) 
			{
				string owner = (string)ide.Value;
				string arch = (string)ide.Key;
				if (sn != null)
					sn += ("|" + arch);
				else
					sn = arch;
				string doc = (string)Global.archRep.docs[arch];
				string size = "-1";
				bool selected = su.archs.Contains(arch);
				DateTime dt = new DateTime(0L);
				if (File.Exists(Global.archRep.downloadPath + arch)) 
				{
					dt = File.GetLastWriteTime(Global.archRep.downloadPath + arch);
					FileStream fs = File.Open(Global.archRep.downloadPath + arch, FileMode.Open,
						FileAccess.Read);
					size = "" + fs.Length;
					fs.Close();
				}
				al.Add(new SelectorEntry(selected, arch,
					dt.ToString("u", DateTimeFormatInfo.InvariantInfo), owner, doc, size));
			}
			Snapshot.Text = sn;
			archiveDB.DataSource = al;
			archiveDB.DataBind();
		}

		/// <summary>
		/// Called on refresh event. Refresh subscriber display.
		/// </summary>
		public void Form1_refresh(object sender, EventArgs e) 
		{
			Subscriber su = (Subscriber)Global.subRep.asubscribers[Subscriber.Text];
			ArrayList al = archiveDB.SelectedItems;
			string[] archs = Snapshot.Text.Split(new char[1] { '|' });
			IEnumerator ie = al.GetEnumerator();
			string host = Request.ServerVariables["REMOTE_HOST"];
			while(ie.MoveNext()) 
			{
				SelectedEntry se = (SelectedEntry)ie.Current;
				string archive = archs[se.archNum];
				if (!Global.archRep.archives.Contains(archive))
					continue;
				if (se.selected) 
				{
					if (!su.archs.Contains(archive)) 
					{
						Global.subRep.add(User.Identity.Name, host, Subscriber.Text, archive);
						Log.write(User.Identity.Name, host, "add archive(" + Subscriber.Text +
							", " + archive + ")");
					}
				} 
				else 
				{
					if (su.archs.Contains(archive)) 
					{
						Global.subRep.delete(User.Identity.Name, host, Subscriber.Text, archive);
						Log.write(User.Identity.Name, host, "delete archive(" + Subscriber.Text +
							", " + archive + ")");
					}
				}
			}
			bind(Subscriber.Text);
		}

		private void Page_Init(object sender, EventArgs e)
		{
			//
			// CODEGEN: This call is required by the ASP.NET Web Form Designer.
			//
			InitializeComponent();
		}

		#region Web Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{    
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion
	}
	/// <summary>
	/// Describes an archive. Element of the archive list.
	/// </summary>
	public sealed class SelectorEntry 
	{
		/// <summary>
		/// If true the archive is subscribed
		/// </summary>
		public bool selected;
		/// <summary>
		/// Archive name.
		/// </summary>
		public string archive;
		/// <summary>
		/// Archive last modified time.
		/// </summary>
		private string date;
		/// <summary>
		/// User who published the archive.
		/// </summary>
		private string owner;
		/// <summary>
		/// URL of the archive documentation.
		/// </summary>
		private string doc;
		/// <summary>
		/// Size of the archive.
		/// </summary>
		private string size;
		/// <summary>
		/// Constructor.
		/// </summary>
		/// <param name="b">True: subscribed</param>
		/// <param name="a">Archive name</param>
		/// <param name="t">Archive last modified time</param>
		/// <param name="o">User who published the archive</param>
		/// <param name="d">URL of the archive documentation</param>
		/// <param name="s">Size of the archive</param>
		public SelectorEntry(bool b, string a, string t, string o, string d, string s) 
		{
			selected = b;
			archive = a;
			date = t;
			owner = o;
			doc = d;
			size = s;
		}
		/// <value>Archive name</value>
		public bool Selected 
		{
			get { return selected; }
		}
		/// <value>Archive name</value>
		public string Archive 
		{
			get { return archive; }
		}
		/// <value>Archive last modified time</value>
		public string Date 
		{
			get { return date; }
		}
		/// <value>User who published the archive</value>
		public string Owner 
		{
			get { return owner; }
		}
		/// <value>URL of the archive documentation</value>
		public string Documentation 
		{
			get { return doc; }
		}
		/// <value>Size of the archive</value>
		public string Size 
		{
			get { return size; }
		}
	}
}