RSS Feed Aggregator and Blogging Smart Client

using System;
using System.IO;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Reflection;
namespace RSSBlogAPI
{
	using RSSCommon.Helper;
	/// <summary>
	/// Summary description for WebLogManager.
	/// </summary>
	public class WebLogManager : System.Windows.Forms.Form
	{
		#region Designer

		private TD.SandBar.ToolBar standardToolBar;
		private TD.SandBar.ButtonItem newWebLogButton;
		private TD.SandBar.ButtonItem deleteWebLogButton;
		private TD.SandBar.ButtonItem sendAllPostsButton;
		private System.Windows.Forms.Panel middlePanel;
		private System.Windows.Forms.Panel leftPanel;
		private System.Windows.Forms.Splitter splitter1;
		private System.Windows.Forms.Panel rightPanel;
		private TD.Eyefinder.NavigationBar webLogsNavigationBar;
		private TD.SandBar.ButtonItem closeWindow;
		private RSSBlogAPI.PostEditorControl postEditorControl;
		private TD.SandBar.ButtonItem buttonItem1;
		private System.Windows.Forms.Label noWebLogLabel;
		private TD.SandBar.ButtonItem buttonItem2;
		private TD.SandBar.ButtonItem buttonItem3;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		public WebLogManager()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			//
			// TODO: Add any constructor code after InitializeComponent call
			//
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows 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()
		{
			System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(WebLogManager));
			this.standardToolBar = new TD.SandBar.ToolBar();
			this.buttonItem3 = new TD.SandBar.ButtonItem();
			this.newWebLogButton = new TD.SandBar.ButtonItem();
			this.sendAllPostsButton = new TD.SandBar.ButtonItem();
			this.deleteWebLogButton = new TD.SandBar.ButtonItem();
			this.buttonItem1 = new TD.SandBar.ButtonItem();
			this.buttonItem2 = new TD.SandBar.ButtonItem();
			this.closeWindow = new TD.SandBar.ButtonItem();
			this.middlePanel = new System.Windows.Forms.Panel();
			this.rightPanel = new System.Windows.Forms.Panel();
			this.postEditorControl = new RSSBlogAPI.PostEditorControl();
			this.splitter1 = new System.Windows.Forms.Splitter();
			this.leftPanel = new System.Windows.Forms.Panel();
			this.noWebLogLabel = new System.Windows.Forms.Label();
			this.webLogsNavigationBar = new TD.Eyefinder.NavigationBar();
			this.middlePanel.SuspendLayout();
			this.rightPanel.SuspendLayout();
			this.leftPanel.SuspendLayout();
			this.SuspendLayout();
			// 
			// standardToolBar
			// 
			this.standardToolBar.Buttons.AddRange(new TD.SandBar.ToolbarItemBase[] {
																					   this.buttonItem3,
																					   this.newWebLogButton,
																					   this.sendAllPostsButton,
																					   this.deleteWebLogButton,
																					   this.buttonItem1,
																					   this.buttonItem2,
																					   this.closeWindow});
			this.standardToolBar.Guid = new System.Guid("b0513a55-c604-4c15-94aa-f731393f8496");
			this.standardToolBar.Location = new System.Drawing.Point(0, 0);
			this.standardToolBar.Name = "standardToolBar";
			this.standardToolBar.Size = new System.Drawing.Size(848, 26);
			this.standardToolBar.TabIndex = 5;
			this.standardToolBar.Text = "toolBar1";
			this.standardToolBar.ButtonClick += new TD.SandBar.ToolBar.ButtonClickEventHandler(this.standardToolBar_ButtonClick);
			// 
			// buttonItem3
			// 
			this.buttonItem3.Icon = ((System.Drawing.Icon)(resources.GetObject("buttonItem3.Icon")));
			this.buttonItem3.Tag = "$NewBlog";
			this.buttonItem3.Text = "New Post";
			// 
			// newWebLogButton
			// 
			this.newWebLogButton.Icon = ((System.Drawing.Icon)(resources.GetObject("newWebLogButton.Icon")));
			this.newWebLogButton.Tag = "$NewWebLog";
			this.newWebLogButton.Text = "New Web Log";
			// 
			// sendAllPostsButton
			// 
			this.sendAllPostsButton.Icon = ((System.Drawing.Icon)(resources.GetObject("sendAllPostsButton.Icon")));
			this.sendAllPostsButton.Tag = "$SendAll";
			this.sendAllPostsButton.Text = "Send All Now";
			// 
			// deleteWebLogButton
			// 
			this.deleteWebLogButton.Icon = ((System.Drawing.Icon)(resources.GetObject("deleteWebLogButton.Icon")));
			this.deleteWebLogButton.Tag = "$DeleteWebLog";
			this.deleteWebLogButton.Text = "Delete Web Log";
			// 
			// buttonItem1
			// 
			this.buttonItem1.Icon = ((System.Drawing.Icon)(resources.GetObject("buttonItem1.Icon")));
			this.buttonItem1.Tag = "$DeletePost";
			this.buttonItem1.Text = "Delete Post";
			// 
			// buttonItem2
			// 
			this.buttonItem2.Icon = ((System.Drawing.Icon)(resources.GetObject("buttonItem2.Icon")));
			this.buttonItem2.Tag = "$TestWebLog";
			this.buttonItem2.Text = "Test Setting";
			// 
			// closeWindow
			// 
			this.closeWindow.Icon = ((System.Drawing.Icon)(resources.GetObject("closeWindow.Icon")));
			this.closeWindow.Tag = "$Close";
			this.closeWindow.Text = "Close";
			// 
			// middlePanel
			// 
			this.middlePanel.Controls.Add(this.rightPanel);
			this.middlePanel.Controls.Add(this.splitter1);
			this.middlePanel.Controls.Add(this.leftPanel);
			this.middlePanel.Dock = System.Windows.Forms.DockStyle.Fill;
			this.middlePanel.Location = new System.Drawing.Point(0, 26);
			this.middlePanel.Name = "middlePanel";
			this.middlePanel.Size = new System.Drawing.Size(848, 484);
			this.middlePanel.TabIndex = 7;
			// 
			// rightPanel
			// 
			this.rightPanel.Controls.Add(this.postEditorControl);
			this.rightPanel.Dock = System.Windows.Forms.DockStyle.Fill;
			this.rightPanel.Location = new System.Drawing.Point(153, 0);
			this.rightPanel.Name = "rightPanel";
			this.rightPanel.Size = new System.Drawing.Size(695, 484);
			this.rightPanel.TabIndex = 2;
			// 
			// postEditorControl
			// 
			this.postEditorControl.CurrentPost = ((RSSBlogAPI.Post)(resources.GetObject("postEditorControl.CurrentPost")));
			this.postEditorControl.Dock = System.Windows.Forms.DockStyle.Fill;
			this.postEditorControl.Location = new System.Drawing.Point(0, 0);
			this.postEditorControl.Name = "postEditorControl";
			this.postEditorControl.Size = new System.Drawing.Size(695, 484);
			this.postEditorControl.TabIndex = 0;
			this.postEditorControl.OnSave += new System.EventHandler(this.postEditorControl_OnSave);
			// 
			// splitter1
			// 
			this.splitter1.Location = new System.Drawing.Point(150, 0);
			this.splitter1.Name = "splitter1";
			this.splitter1.Size = new System.Drawing.Size(3, 484);
			this.splitter1.TabIndex = 1;
			this.splitter1.TabStop = false;
			// 
			// leftPanel
			// 
			this.leftPanel.Controls.Add(this.noWebLogLabel);
			this.leftPanel.Controls.Add(this.webLogsNavigationBar);
			this.leftPanel.Dock = System.Windows.Forms.DockStyle.Left;
			this.leftPanel.Location = new System.Drawing.Point(0, 0);
			this.leftPanel.Name = "leftPanel";
			this.leftPanel.Size = new System.Drawing.Size(150, 484);
			this.leftPanel.TabIndex = 0;
			// 
			// noWebLogLabel
			// 
			this.noWebLogLabel.Location = new System.Drawing.Point(16, 16);
			this.noWebLogLabel.Name = "noWebLogLabel";
			this.noWebLogLabel.Size = new System.Drawing.Size(112, 72);
			this.noWebLogLabel.TabIndex = 1;
			this.noWebLogLabel.Text = "Click on \"New Web Log\" button to add a new web log account and get started";
			// 
			// webLogsNavigationBar
			// 
			this.webLogsNavigationBar.Dock = System.Windows.Forms.DockStyle.Fill;
			this.webLogsNavigationBar.HeaderFont = new System.Drawing.Font("Tahoma", 12F, System.Drawing.FontStyle.Bold);
			this.webLogsNavigationBar.Location = new System.Drawing.Point(0, 0);
			this.webLogsNavigationBar.Name = "webLogsNavigationBar";
			this.webLogsNavigationBar.PaneFont = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Bold);
			this.webLogsNavigationBar.SelectedPane = null;
			this.webLogsNavigationBar.Size = new System.Drawing.Size(150, 484);
			this.webLogsNavigationBar.TabIndex = 0;
			this.webLogsNavigationBar.Text = "Web Logs";
			this.webLogsNavigationBar.SelectedPaneChanged += new System.EventHandler(this.webLogsNavigationBar_SelectedPaneChanged);
			// 
			// WebLogManager
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 14);
			this.ClientSize = new System.Drawing.Size(848, 510);
			this.Controls.Add(this.middlePanel);
			this.Controls.Add(this.standardToolBar);
			this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
			this.Name = "WebLogManager";
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
			this.Text = "Web Log Center";
			this.Closing += new System.ComponentModel.CancelEventHandler(this.WebLogManager_Closing);
			this.Load += new System.EventHandler(this.WebLogManager_Load);
			this.middlePanel.ResumeLayout(false);
			this.rightPanel.ResumeLayout(false);
			this.leftPanel.ResumeLayout(false);
			this.ResumeLayout(false);

		}
		#endregion

		private void WebLogManager_Load(object sender, System.EventArgs e)
		{
			this.LoadAllWeblogs();
		}

		#endregion

		#region MyCode

		#region Private Methods

		public event EventHandler SendFeeds;

		/// <summary>
		/// Load all weblogs, create the navigation panes for each weblog, populate them
		/// </summary>
		private void LoadAllWeblogs()
		{
			WebLogProvider.LoadWebLogs();

			// If tag is null, we skip all the events raised from this control
			this.webLogsNavigationBar.Tag = null;
			this.webLogsNavigationBar.Controls.Clear();			

			// Reverse the order of web logs so that the recent weblog is shown first in the 
			// navigation
			ArrayList blogs = (ArrayList)WebLogProvider.Instance.WebLogs.Clone();
			blogs.Reverse();

			// Add all weblogs as navigation pane 
			foreach( WebLog log in blogs )
			{
				// Create one navigation pane for each web log 
				WebLogNavigationBar bar = new WebLogNavigationBar(log);				
				bar.Text = log.Title;
				bar.SmallImage = Image.FromStream( RSSCommon.Helper.SerializationHelper.GetStream( "PublicQueue.ico" ) );
				
				// Host a web log viewer control inside the pane which 
				// shows details about the web log
				WebLogViewControl webLogView = new WebLogViewControl(log);
				webLogView.Name = bar.Name;
				webLogView.Dock = DockStyle.Fill;
				bar.Controls.Add( webLogView );

				// Subscribe to post selection event so that we can show post
				// details on the post editor whenever a post is selected
				webLogView.OnPostSelect += new EventHandler(webLogView_OnPostSelect);
				webLogView.OnPostDelete += new EventHandler(webLogView_OnPostDelete);

				// This sometimes fails
				try
				{
					this.webLogsNavigationBar.Controls.Add( bar );
				}
				catch( Exception x ) 
				{
					System.Diagnostics.Debug.WriteLine( x.ToString() );
				}
			}

			// Decide how many panes to show by default, don't show more than 3 at a time
			if( WebLogProvider.Instance.WebLogs.Count > 3 )
				this.webLogsNavigationBar.ShowPanes = 3;
			else
				this.webLogsNavigationBar.ShowPanes = WebLogProvider.Instance.WebLogs.Count;

			this.ShowCurrentWebLog();

			this.UpdateUIState();

			this.webLogsNavigationBar.Tag = true;
		}

		/// <summary>
		/// Invoke a public method of this class. It is used by the toolbar where
		/// each button contains a name of method to call on this class
		/// </summary>
		/// <param name="name"></param>
		private void InvokeMethod( string name )
		{
			if( null == name || 0 == name.Length ) return;

			// if self call, call the function on self
			if( name.StartsWith("$") )
			{
				MethodInfo method = this.GetType().GetMethod( name.TrimStart('$') );
				method.Invoke( this, null );
			}			
		}

		/// <summary>
		/// Save the current post in the current weblog's post queue
		/// </summary>
		private void SaveCurrentPost()
		{
			WebLogNavigationBar bar = this.webLogsNavigationBar.SelectedPane as WebLogNavigationBar;

			if( !this.postEditorControl.IsHandleCreated ) return;

			Post post = this.postEditorControl.CurrentPost;
			// If this is a new post, add the post in the collection
			if( null == post ) return;

			if( !bar.WebLog.Posts.Contains( post ) )
				bar.WebLog.EnqueuePost( post );

			bar.RefreshList( post );

			WebLogProvider.SaveWebLogs();

			if( post.IsSend )
				MessageBox.Show( this, "Message queued for sending on next synchronization", 
					"Send", MessageBoxButtons.OK, MessageBoxIcon.Information );
		}

		/// <summary>
		/// Load the current weblog posts in the list and preselect last unfinished post
		/// </summary>
		private void ShowCurrentWebLog()
		{
			WebLogNavigationBar bar = this.webLogsNavigationBar.SelectedPane as WebLogNavigationBar;
			if( null == bar ) return;

			WebLog log = bar.WebLog;

			// Find the last not sent post
			if( log.Posts.Count > 0 )
			{
				foreach( Post lastPost in log.Posts )
				{
					if( ( null != lastPost.ErrorInPost && lastPost.ErrorInPost.Length > 0 ) // error occured
						|| !lastPost.IsSent ) // Draft
					{
						this.EditPost( bar.WebLog, lastPost );
						bar.View.ReloadPosts(lastPost);

						return;
					}
				}
			}

			bar.View.ReloadPosts(null);
			// No post found so far to edit, show a new post
			this.NewPost();
		}

		/// <summary>
		/// Shwo the post in the post editor
		/// </summary>
		/// <param name="log"></param>
		/// <param name="post"></param>
		private void EditPost( WebLog log, Post post )
		{
			this.postEditorControl.SetWebLog( log );
			this.postEditorControl.CurrentPost = post;
		}

		/// <summary>
		/// Select the navigation bar which contains the specified weblog
		/// </summary>
		/// <param name="log"></param>
		private void SelectWebLog( WebLog log )
		{
			foreach( Control c in this.webLogsNavigationBar.Controls )
			{
				if( c is WebLogNavigationBar )
					c.Show();
			}
		}

		/// <summary>
		/// Update the toolbar button states and other UI element state according
		/// to current state of weblogs and posts.
		/// </summary>
		private void UpdateUIState()
		{
			if( WebLogProvider.Instance.WebLogs.Count > 0 )
				noWebLogLabel.Visible = false;

			if( null == webLogsNavigationBar.SelectedPane )
			{
				this.standardToolBar.Buttons[0].Enabled = false;
				this.standardToolBar.Buttons[2].Enabled = false;
				this.standardToolBar.Buttons[3].Enabled = false;
				this.standardToolBar.Buttons[4].Enabled = false;
				this.standardToolBar.Buttons[5].Enabled = false;
				this.postEditorControl.Enabled = false;
			}
			else
			{
				this.standardToolBar.Buttons[0].Enabled = true;
				this.standardToolBar.Buttons[2].Enabled = true;
				this.standardToolBar.Buttons[3].Enabled = true;
				this.standardToolBar.Buttons[4].Enabled = true;
				this.standardToolBar.Buttons[5].Enabled = true;
				this.postEditorControl.Enabled = true;
			}
		}
		#endregion

		#region Public Methods

		/// <summary>
		/// Start a new post in the current weblog
		/// </summary>
		public void NewBlog()
		{
			this.NewPost();
		}

		/// <summary>
		/// Test whether current settings on the weblog is correct
		/// </summary>
		public void TestWebLog()
		{
			WebLogNavigationBar bar = this.webLogsNavigationBar.SelectedPane as WebLogNavigationBar;
			if( null == bar ) 
			{
				return;
			}
			else
			{
				try
				{
					// Perform a test
					WebLogProvider.Instance.Test( bar.WebLog );

					// If no exception, then all ok
					MessageBox.Show( this, "Weblog settings are OK.", "Weblog Test",
						MessageBoxButtons.OK, MessageBoxIcon.Information );
				}
				catch( Exception x )
				{
					// weblog setting is not accurate
					if( DialogResult.Yes == MessageBox.Show( this, x.Message 
						+ Environment.NewLine 
						+ "Do you need some suggestions?", "Weblog Test", 
						MessageBoxButtons.YesNo, MessageBoxIcon.Error )	)
					{
						string path = Path.Combine( AppDomain.CurrentDomain.BaseDirectory, "docs\\WebLogInstruction.html" );
						RSSCommon.Helper.BrowserHelper.BrowseURL( path );
					}
				}
			}
		}

		/// <summary>
		/// Add a new weblog account
		/// </summary>
		public void NewWebLog()
		{
			using( WebLogEditor editor = new WebLogEditor() )
			{
				if( DialogResult.OK == editor.ShowDialog( this ) )
				{
					WebLogProvider.Instance.WebLogs.Add( editor.NewWebLog );
					
					WebLogProvider.SaveWebLogs();

					this.LoadAllWeblogs();

					this.SelectWebLog( editor.NewWebLog );
				}
			}
		}

		/// <summary>
		/// Create a new post in the current weblog. However, the post is not added to weblog's
		/// post queue
		/// </summary>
		private void NewPost()
		{
			this.SaveCurrentPost();

			WebLogNavigationBar bar = this.webLogsNavigationBar.SelectedPane as WebLogNavigationBar;
			if( null == bar ) 
			{
				this.postEditorControl.Enabled = false;
				return;
			}
			else
			{
				this.postEditorControl.Enabled = true;

				this.postEditorControl.SetWebLog( bar.WebLog );

				Post newPost = new Post();
				newPost.Title = "New Post";
				this.postEditorControl.CurrentPost = newPost;

				//bar.WebLog.Posts.Add( newPost );
			}
		}

		/// <summary>
		/// Start synchronizer to post all the queued posts
		/// </summary>
		public void SendAll()
		{
			if( null != SendFeeds )
				SendFeeds( this, EventArgs.Empty );
		}

		/// <summary>
		/// Delete current weblog account and all of its posts
		/// </summary>
		public void DeleteWebLog()
		{
			WebLogNavigationBar bar = this.webLogsNavigationBar.SelectedPane as WebLogNavigationBar;
			if( null == bar ) return;
			
			WebLog log = bar.WebLog;
			
			if( DialogResult.Yes == MessageBox.Show( this, "Are you sure you want to delete this Web Log with all the posts?", 
				"Delete Weblog", MessageBoxButtons.YesNo, MessageBoxIcon.Question ) )
			{
				WebLogProvider.Instance.WebLogs.Remove( log );

				WebLogProvider.SaveWebLogs();

				this.LoadAllWeblogs();
			}
		}

		/// <summary>
		/// Delete the current post
		/// </summary>
		public void DeletePost()
		{
			WebLogNavigationBar bar = this.webLogsNavigationBar.SelectedPane as WebLogNavigationBar;
			if( null == bar ) return;
			
			if( DialogResult.Yes == MessageBox.Show( this, 
				"Deleting the current post, are you sure?", 
				"Delete Post", MessageBoxButtons.YesNo, MessageBoxIcon.Question ) )
			{
				bar.View.DeleteSelectedPost();
			}
		}

		#endregion

		#region Events
		
		private void webLogView_OnPostDelete(object sender, EventArgs e)
		{
			this.ShowCurrentWebLog();
		}

		private void WebLogManager_Closing(object sender, System.ComponentModel.CancelEventArgs e)
		{
			this.SaveCurrentPost();
			WebLogProvider.SaveWebLogs();
		}

		public void DownloadCompleteEventHandler( object sender, EventArgs e )
		{
			this.LoadAllWeblogs();
		}

		private void webLogView_OnPostSelect(object sender, EventArgs e)
		{
			WebLogNavigationBar bar = this.webLogsNavigationBar.SelectedPane as WebLogNavigationBar;
			if( null == bar ) return;
			
			WebLogViewControl view = sender as WebLogViewControl;
			Post post = view.SelectedPost;
			this.EditPost( bar.WebLog, post );
		}

		private void standardToolBar_ButtonClick(object sender, TD.SandBar.ToolBarItemEventArgs e)
		{
			this.InvokeMethod(e.Item.Tag as string);
		}


		private void webLogsNavigationBar_SelectedPaneChanged(object sender, System.EventArgs e)
		{
			if( null == this.webLogsNavigationBar.Tag ) return;
			this.ShowCurrentWebLog();			
		}

		private void postEditorControl_OnSave(object sender, System.EventArgs e)
		{
			this.SaveCurrentPost();
		}

		

		#endregion

		#region Inner Class

		/// <summary>
		/// Extends the NavigationPane and makes the navigation pane attached to 
		/// a weblog
		/// </summary>
		private class WebLogNavigationBar : TD.Eyefinder.NavigationPane
		{
			public WebLog WebLog;
			public WebLogNavigationBar( WebLog log )
			{
				this.WebLog = log;

				this.WebLog.PropertyChanged += new PropertyChangedEventHandler(WebLog_PropertyChanged);
			}

			public WebLogViewControl View
			{
				get
				{
					foreach( Control c in this.Controls )
					{
						if( c is WebLogViewControl )
						{
							return (c as WebLogViewControl);
						}
					}
					return null;
				}
			}
			public void RefreshList( Post selectedPost )
			{
				this.View.ReloadPosts( selectedPost );	
			}
			public void DeleteSelectedPost()
			{
				this.View.DeleteSelectedPost();
			}

			private void WebLog_PropertyChanged(object sender, PropertyChangedEventArgs e)
			{
				base.Text = this.WebLog.Title;
			}
		}

		#endregion

		#endregion
	}
}