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 infoWeb.WebModules.Accounts.Business;

namespace infoWeb.WebModules.Forums.Web
{
	/// <summary>
	/// Summary description for WebForm1.
	/// </summary>
	public class _Default : infoWeb.ThePhile.Web.PhilePage
	{
		protected System.Web.UI.WebControls.DataList CategoriesList;
		protected System.Web.UI.WebControls.TextBox ForumName;
		protected System.Web.UI.WebControls.TextBox ForumDescription;
		protected System.Web.UI.WebControls.TextBox ForumCategoryCurr;
		protected System.Web.UI.WebControls.TextBox ForumPosition;
		protected System.Web.UI.WebControls.TextBox CategoryName;
		protected System.Web.UI.WebControls.TextBox CategoryImageUrl;
		protected System.Web.UI.WebControls.TextBox CategoryPosition;
		protected System.Web.UI.WebControls.TextBox ForumIDCurr;
		protected System.Web.UI.WebControls.TextBox CategoryIDCurr;
		protected System.Web.UI.WebControls.Table ForumBox;
		protected System.Web.UI.WebControls.Table CategoryBox;
		protected System.Web.UI.WebControls.TableCell ForumBoxHeader;
		protected System.Web.UI.WebControls.TableCell CategoryBoxHeader;
		protected System.Web.UI.WebControls.TableRow ForumCategoryRow;
		protected System.Web.UI.WebControls.DropDownList ForumCategory;
		protected System.Web.UI.HtmlControls.HtmlInputHidden paramID;
		protected System.Web.UI.WebControls.LinkButton SubmitForum;
		protected System.Web.UI.WebControls.LinkButton CencelForum;
		protected System.Web.UI.WebControls.LinkButton DeleteCategory;
		protected System.Web.UI.WebControls.LinkButton DeleteForum;

		private bool canAdministerCategories;

		private void Page_Load(object sender, System.EventArgs e)
		{
			// do not allow to manage categories if the user is not authenticated or
			// does not have the proper permission
			canAdministerCategories = (Context.User.Identity.IsAuthenticated &&
				((SitePrincipal)Context.User).HasPermission((int)ForumsPermissions.AdministerCategories));
			
			if (!IsPostBack)
			{
				BindList();
			}
		}

		public bool CanAdministerCategories
		{
			get { return canAdministerCategories; }
		}

		private void BindList()
		{
			// bind a DataView with all the categories to the DataList
			CategoriesList.DataSource = Business.Category.GetCategories().Tables[0].DefaultView;
			CategoriesList.DataBind();
		}

		public DataView GetForumsSource(int categoryID)
		{
			// get the DataView with the forums for the specified category
			return new Business.Category(categoryID).GetForums().Tables[0].DefaultView;
		}

 		protected void ForumsGrid_Edit(object sender, DataGridCommandEventArgs e)
		{
			// if the user cannot administer categories/forums redirect to the login page
			if (!canAdministerCategories)
			{
				Response.Redirect("/ThePhile/Modules/Users/Login.aspx?ShowError=true", true);
			}

			// get a reference to the clicked forum's parent grid
			DataGrid forumsGrid = (DataGrid)e.Item.Parent.Parent;
			// get the ID of the clicked forum
			int forumID = (int)forumsGrid.DataKeys[e.Item.ItemIndex];
			// get the forum's details
			Business.Forum forum = new Business.Forum(forumID);

			// set the controls for editing the record
			ForumName.Text = forum.Name;
			ForumDescription.Text = forum.Description;
			ForumCategoryCurr.Text = forum.CategoryID.ToString();
			ForumPosition.Text = forum.Position.ToString();
			ForumIDCurr.Text = forum.ID.ToString();
			ForumBoxHeader.Text = "Edit forum";
			
			// hide the category box, if visible
			CategoryBox.Visible = false;

			// show the box, but hide the dropdownlist for the categories
			ForumCategoryRow.Visible = false;
			ForumBox.Visible = true;
		}

		// show the box for adding a forum
		protected void NewForum_Click(object sender, EventArgs e)
		{
			// if the user cannot administer categories/forums redirect to the login page
			if (!canAdministerCategories)
			{
				Response.Redirect("/ThePhile/Modules/Users/Login.aspx?ShowError=true", true);
			}

			// hide the category box, if visible
			CategoryBox.Visible = false;
			
			ForumCategory.DataSource  = Business.Category.GetCategories().Tables[0].DefaultView;
			ForumCategory.DataBind();
			
			// set the controls for the forum box
			ForumBoxHeader.Text = "Create forum";
			ForumPosition.Text = "";
			ForumName.Text = "";
			ForumDescription.Text = "";
			ForumCategoryCurr.Text = "";
			ForumIDCurr.Text = "";
			ForumCategoryRow.Visible = true;
			ForumBox.Visible = true;
		}

		// submit the box for adding/editing a forum
		protected void SubmitForum_Click(object sender, EventArgs e)
		{
			// if the user cannot administer categories/forums redirect to the login page
			if (!canAdministerCategories)
			{
				Response.Redirect("/ThePhile/Modules/Users/Login.aspx?ShowError=true", true);
			}

			int forumPos = (ForumPosition.Text.Length > 0 ? int.Parse(ForumPosition.Text) : 0);
			
			// if the hidden textbox is empty, it means that we're adding a forum
			if (ForumIDCurr.Text.Length == 0)
			{
				// add a new forum
				Business.Category category = new Business.Category(int.Parse(ForumCategory.SelectedItem.Value));
				category.AddForum(ForumName.Text, ForumDescription.Text, forumPos);
			}
			else
			{
				// edit a forum
				Business.Forum forum = new Business.Forum(int.Parse(ForumIDCurr.Text));
				forum.Name = ForumName.Text;
				forum.Description = ForumDescription.Text;
				forum.Position = forumPos;
				forum.Update();
			}
			
			// hide the forum box
			ForumBox.Visible = false;

			// refresh
			BindList();
		}

		// cancel the box for adding/editing a forum
		protected void CancelForum_Click(object sender, EventArgs e)
		{
			ForumBox.Visible = false;
		}

		protected void DeleteForum_Click(object sender, EventArgs e)
		{
			// if the user cannot administer categories/forums...
			if (!canAdministerCategories)
			{
				// redirect to the Login page
				// this is required because a hacker could manually call the DeleteForum javascript
				Response.Redirect("/ThePhile/Modules/Users/Login.aspx?ShowError=true", true);
			}

			// extract the ID of the forum to delete
			int forumID = int.Parse(paramID.Value.ToString());
			// delete the forum
			Business.Forum forum = new Business.Forum(forumID);
			forum.Delete();
			// re-bind the list to show the updated records
			BindList();
		}


		protected void CategoriesList_Edit(object sender, DataListCommandEventArgs e)
		{
			// if the user cannot administer categories/forums redirect to the login page
			if (!canAdministerCategories)
			{
				Response.Redirect("/ThePhile/Modules/Users/Login.aspx?ShowError=true", true);
			}

			// get the ID of the clicked category
			int categoryID = (int)CategoriesList.DataKeys[e.Item.ItemIndex];
			// get the category's details
			Business.Category category = new Business.Category(categoryID);

			// set the controls for editing the record
			CategoryName.Text = category.Name;
			CategoryImageUrl.Text = category.ImageUrl;
			CategoryPosition.Text = category.Position.ToString();
			CategoryIDCurr.Text = category.ID.ToString();
			CategoryBoxHeader.Text = "Edit category";
			
			// hide the forum box, if visible
			ForumBox.Visible = false;
			// show the category box
			CategoryBox.Visible = true;
		}

		// show the box for adding a category
		protected void NewCategory_Click(object sender, EventArgs e)
		{
			// if the user cannot administer categories/forums redirect to the login page
			if (!canAdministerCategories)
			{
				Response.Redirect("/ThePhile/Modules/Users/Login.aspx?ShowError=true", true);
			}

			// hide the forum box, if visible
			ForumBox.Visible = false;
			
			// set the controls for the category box		
			CategoryBoxHeader.Text = "Create category";
			CategoryName.Text = "";
			CategoryImageUrl.Text = "";
			CategoryPosition.Text = "";
			CategoryIDCurr.Text = "";
			CategoryBox.Visible = true;
		}

		// submit the box for adding/editing a category
		protected void SubmitCategory_Click(object sender, EventArgs e)
		{
			// if the user cannot administer categories/forums redirect to the login page
			if (!canAdministerCategories)
			{
				Response.Redirect("/ThePhile/Modules/Users/Login.aspx?ShowError=true", true);
			}

			int categoryPos = (CategoryPosition.Text.Length > 0 ? int.Parse(CategoryPosition.Text) : 0);
			
			// if the hidden textbox is empty, it means that we're adding a category
			if (CategoryIDCurr.Text.Length == 0)
			{
				// add a new category
				Business.Category category = new Business.Category();
				category.Create(CategoryName.Text, CategoryImageUrl.Text, categoryPos);
			}
			else
			{
				// edit a category
				Business.Category category = new Business.Category(int.Parse(CategoryIDCurr.Text));
				category.Name = CategoryName.Text;
				category.ImageUrl = CategoryImageUrl.Text;
				category.Position = categoryPos;
				category.Update();
			}
			
			// hide the category box
			CategoryBox.Visible = false;

			// refresh
			BindList();
		}

		// cancel the box for adding/editing a category
		protected void CancelCategory_Click(object sender, EventArgs e)
		{
			CategoryBox.Visible = false;
		}

		protected void DeleteCategory_Click(object sender, EventArgs e)
		{
			// if the user cannot administer categories/forums...
			if (!canAdministerCategories)
			{
				// redirect to the Login page
				// this is required because a hacker could manually call the DeleteCategory javascript
				Response.Redirect("/ThePhile/Modules/Users/Login.aspx?ShowError=true", true);
			}

			// extract the ID of the category to delete
			int categoryID = int.Parse(paramID.Value.ToString());
			// delete the category
			Business.Category category = new Business.Category(categoryID);
			category.Delete();
			// re-bind the list to show the updated records
			BindList();
		}


		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: This call is required by the ASP.NET Web Form Designer.
			//
			base.OnInit(e);
			InitializeComponent();
			
		}
		
		/// <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
	}
}