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 Post.
	/// </summary>
	public class PostMessage : infoWeb.ThePhile.Web.PhilePage
	{
		protected System.Web.UI.WebControls.TableCell MessageBoxHeader;
		protected System.Web.UI.WebControls.TextBox Subject;
		protected System.Web.UI.WebControls.TextBox Message;
		protected System.Web.UI.WebControls.TextBox Key;
		protected System.Web.UI.WebControls.TableRow SubjectRow;
		protected System.Web.UI.WebControls.TableRow KeyRow;
		protected System.Web.UI.WebControls.TableRow SpecialTagsRow;
		protected Web.Controls.User.Header Header;
		protected System.Web.UI.WebControls.Table MessageBox;

		private int forumID;
		private int topicID;
		private int replyID;
		private bool canModerateForums;
		SiteIdentity currUser;
		Business.Member currMember;

		private void Page_Load(object sender, System.EventArgs e)
		{	
			// if the user is not authenticated, redirect to the login page
			if (!Context.User.Identity.IsAuthenticated)
			{
				Response.Redirect("/ThePhile/Modules/Users/Login.aspx", true);
			}

			// retrieve the current user/member
			currUser = (SiteIdentity)Context.User.Identity;
			currMember = new Business.Member();
			currMember.LoadFromUser(currUser.UserID);

			// if the user is not registered for the forum, redirect to the profile page
			if (currMember.ID == -1)
			{
				Response.Redirect("MyProfile.aspx", true);
			}
			
			// check if the user has the permission to moderate the forums
			SitePrincipal currentPrincipal = (SitePrincipal)Context.User;
			canModerateForums = currentPrincipal.HasPermission(
				(int)ForumsPermissions.ModerateForums);

			// if the user wants to edit a topic or reply, but does not have the permission to do so,
			// redirect to the login page
			if (Request.QueryString["Action"].ToString().ToLower().StartsWith("edit") 
				&& !canModerateForums)
			{
				Response.Redirect("/ThePhile/Modules/Users/Login.aspx?ShowError=true", true);
			}

			// extract the ForumID, if specified
			if (Request.QueryString["ForumID"] == null)
				forumID = -1;
			else
				forumID = int.Parse(Request.QueryString["ForumID"]);

			// extract the TopicID, if specified
			if (Request.QueryString["TopicID"] == null)
				topicID = -1;
			else
				topicID = int.Parse(Request.QueryString["TopicID"]);

			// extract the ReplyID, if specified
			if (Request.QueryString["ReplyID"] == null)
				replyID = -1;
			else
				replyID = int.Parse(Request.QueryString["ReplyID"]);
			
			if (!Page.IsPostBack)
			{
				// show/hide the icons for the special tags, according to the settings
				SpecialTagsRow.Visible = Configuration.ModuleConfig.GetSettings().SpecialTagsEnabled;

				// save the referrer Url
				ViewState["ReferrerUrl"] = Request.UrlReferrer.ToString();

				Business.Forum forum = new Business.Forum(forumID);
				Business.Topic topic = new Business.Topic(topicID);
				Business.Reply reply = new Business.Reply(replyID);

				// show the fields and the navigation path, according to the
				// action to complete, and the forum/topic/reply ID
				switch(Request.QueryString["Action"].ToString().ToLower())
				{
					case "newtopic":
						SubjectRow.Visible = true;
						KeyRow.Visible = canModerateForums;
						MessageBoxHeader.Text = "New topic";
						Header.ForumID = forumID;
						break;

					case "edittopic":
						SubjectRow.Visible = true;
						KeyRow.Visible = canModerateForums;
						MessageBoxHeader.Text = "Edit topic";	
						Subject.Text = topic.Subject;
						Key.Text = topic.Key;
						Message.Text = topic.Message;
						Header.TopicID = topicID;
						break;

					case "newreply":
						SubjectRow.Visible = false;
						KeyRow.Visible = false;
						MessageBoxHeader.Text = "New reply";
						Header.TopicID = topicID;
						
						// a topic or another reply can being quoted by this new reply, check it it is the case
						int quoteTopicID;
						int quoteReplyID;
						// extract the QuoteTopicID, if specified
						if (Request.QueryString["QuoteTopicID"] == null)
							quoteTopicID = -1;
						else
							quoteTopicID = int.Parse(Request.QueryString["QuoteTopicID"]);
						// extract the QuoteReplyID, if specified
						if (Request.QueryString["QuoteReplyID"] == null)
							quoteReplyID = -1;
						else
							quoteReplyID = int.Parse(Request.QueryString["QuoteReplyID"]);

						// if a topic is being quoted, add it to the MessageBox
						if (quoteTopicID != -1)
						{
							Business.Topic existentTopic = new Business.Topic(quoteTopicID);
							Message.Text += string.Format("[QUOTE]{0}[/QUOTE]", existentTopic.Message);
						}
						// if a reply is being quoted, add it to the MessageBox
						if (quoteReplyID != -1)
						{
							Business.Reply existentReply = new Business.Reply(quoteReplyID);
							Message.Text += string.Format("[QUOTE]{0}[/QUOTE]", existentReply.Message);
						}

						break;

					case "editreply":
						SubjectRow.Visible = false;
						KeyRow.Visible = false;
						Message.Text = reply.Message;
						MessageBoxHeader.Text = "Edit reply";
						Header.TopicID = reply.Topic.ID;
						break;
				}
			}
		}

		public bool CanModerateForums
		{
			get { return canModerateForums; }
		}

		protected void SubmitMessage_Click(object sender, EventArgs e)
		{
			Business.Forum forum = new Business.Forum(forumID);
			Business.Topic topic = new Business.Topic(topicID);
			Business.Reply reply = new Business.Reply(replyID);

			switch(Request.QueryString["Action"].ToString().ToLower())
			{
				// create a new topic
				case "newtopic":
					int newID = forum.AddTopic(Key.Text, Subject.Text, Message.Text, currMember.ID).ID;
					Response.Redirect("Topic.aspx?TopicID=" + newID.ToString(), true);
					break;

				// edit an existent topic
				case "edittopic":
					topic.Key = Key.Text;
					topic.Subject = Subject.Text;
					topic.Message = Message.Text;
					topic.Update();
					break;

				// add a new reply
				case "newreply":
					topic.AddReply(Message.Text, currMember.ID);
					// add the parameter to the Referrer Url to jump to the last page of the topic
					if (!ViewState["ReferrerUrl"].ToString().ToLower().EndsWith("&display=lastpage"))
						ViewState["ReferrerUrl"] += "&Display=LastPage";
					break;

				// edit an existent reply
				case "editreply":
					reply.Message = Message.Text;
					reply.Update();
					break;
			}

			// redirect to the referrer page
			Response.Redirect(ViewState["ReferrerUrl"].ToString());
		}

		protected void CancelMessage_Click(object sender, EventArgs e)
		{
			// go back to the referrer page
			Response.Redirect(ViewState["ReferrerUrl"].ToString());
		}


		#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
	}
}