using System;
using System.Collections.Generic;
using System.Configuration;
using System.IO;
using System.Linq;
using System.Net.Mime;
using System.Runtime.Serialization.Formatters.Binary;
using System.Web;
using System.Web.Configuration;
using System.Web.Mvc;
using System.Web.Mvc.Ajax;
using System.Web.Profile;
using System.Web.Security;
using CodeKicker.BBCode;
using Npgsql.Web.Blog;
using Npgsql.Web.Blog.DataModel;
using Yavsc;
using yavscModel;

namespace Yavsc.Controllers
{
	public class BlogsController : Controller
	{
		string defaultAvatarMimetype;
		private string sitename =
			WebConfigurationManager.AppSettings ["Name"];
		string avatarDir = "~/avatars";

		public string AvatarDir {
			get { return avatarDir; }
			set { avatarDir = value; }
		}

		public BlogsController ()
		{
			string[] defaultAvatarSpec = ConfigurationManager.AppSettings.Get ("DefaultAvatar").Split (';');
			if (defaultAvatarSpec.Length != 2)
				throw new ConfigurationErrorsException ("the DefaultAvatar spec should be found as <fileName>;<mime-type> ");
			defaultAvatar = defaultAvatarSpec [0];
			defaultAvatarMimetype = defaultAvatarSpec [1];
		}

		public ActionResult Index (string user = null, string title = null, int pageIndex=0, int pageSize=10)
		{
			if (string.IsNullOrEmpty (user)) {
				ViewData ["Message"] = "Blogs";
				return BlogList (pageIndex, pageSize);
			} else {
				MembershipUser u = Membership.GetUser (user, false);
				if (u == null) {
					ModelState.AddModelError ("UserName",
						string.Format ("Utilisateur inconu : {0}", user));
					return BlogList ();
				} else {
					if (string.IsNullOrEmpty (title))
						return UserPosts (user, pageIndex, pageSize);
					return UserPost (user, title);
				}
			}
		}

		public ActionResult BlogList (int pageIndex = 0, int pageSize = 10)
		{
			ViewData ["SiteName"] = sitename;
			int totalRecords;
			BlogEntryCollection bs = BlogManager.LastPosts (pageIndex, pageSize, out totalRecords);
			ViewData ["RecordCount"] = totalRecords; 
			ViewData ["PageSize"] = pageSize;
			ViewData ["PageIndex"] = pageIndex;
			return View ("Index", bs);
		}

		[HttpGet]
		public ActionResult UserPosts (string user, int pageIndex = 0, int pageSize = 10)
		{
			int tr;
			MembershipUser u = Membership.GetUser ();
			FindBlogEntryFlags sf = FindBlogEntryFlags.MatchUserName;
			ViewData ["SiteName"] = sitename;
			ViewData ["BlogUser"] = user;
			if (u != null)
			if (u.UserName == user)
				sf |= FindBlogEntryFlags.MatchInvisible;
			BlogEntryCollection c = BlogManager.FindPost (user, sf, pageIndex, pageSize, out tr);
			ViewData ["BlogTitle"] = BlogTitle (user);
			ViewData ["PageIndex"] = pageIndex;
			ViewData ["PageSize"] = pageSize;
			ViewData ["RecordCount"] = tr; 
			return View ("UserPosts", c);
		
		}

		[Authorize]
		public ActionResult RemoveComment(long cmtid) 
		{
			long postid = BlogManager.RemoveComment (cmtid);
			return UserPost (postid);
		}

		private ActionResult UserPost (long id)
		{
			ViewData ["PostId"] = id;

			BlogEntry e = BlogManager.GetPost (id);
			return UserPost (e);
		}

		private ActionResult UserPost (BlogEntry e)
		{
			if (e == null)
				return View ("TitleNotFound");
			MembershipUser u = Membership.GetUser ();
			if (u != null)
				ViewData ["UserName"] = u.UserName;
			if (!e.Visible) {
				if (u==null)
					return View ("TitleNotFound");
				else if (u.UserName!=e.UserName)
					return View ("TitleNotFound");
			}
			ViewData ["BlogTitle"] = BlogTitle (e.UserName);
			ViewData ["Comments"] = BlogManager.GetComments (e.Id);
			return View ("UserPost", e);
		}

		public ActionResult UserPost (string user, string title)
		{
			ViewData ["BlogUser"] = user;
			ViewData ["PostTitle"] = title;
			int postid = 0;
			if (string.IsNullOrEmpty (title)) {
				if (int.TryParse (user, out postid)) {
					return UserPost (BlogManager.GetPost (postid));
				}
			}
			return UserPost (BlogManager.GetPost (user, title));
		}

		[Authorize]
		public ActionResult Post (string user, string title)
		{
			ViewData ["SiteName"] = sitename;
			string un = Membership.GetUser ().UserName;
			if (String.IsNullOrEmpty (user))
				user = un;
			if (un != user)
				ViewData ["Message"] = string.Format ("Vous n'êtes pas {0}!", user);
			ViewData ["UserName"] = un;
			return View (new BlogEditEntryModel { Title = title });
		}

		[Authorize]
		public ActionResult ValidatePost (BlogEditEntryModel model)
		{
			string username = Membership.GetUser ().UserName;
			ViewData ["SiteName"] = sitename;
			ViewData ["BlogUser"] = username;
			if (ModelState.IsValid) {
				if (!model.Preview) {
					BlogManager.Post (username, model.Title, model.Content, model.Visible);
					return UserPost (username, model.Title);
				}
			}
			return View ("Post", model);
		}

		[Authorize]
		public ActionResult ValidateEdit (BlogEditEntryModel model)
		{
			ViewData ["SiteName"] = sitename;
			ViewData ["BlogUser"] = Membership.GetUser ().UserName;
			if (ModelState.IsValid) {
				if (!model.Preview) {
					BlogManager.UpdatePost (model.Id, model.Content, model.Visible);
					return UserPost (model);
				}
			}
			return View ("Edit", model);
		}

		[Authorize]
		public ActionResult Edit (BlogEditEntryModel model)
		{
			if (model != null) {
				string user = Membership.GetUser ().UserName;
				ViewData ["BlogTitle"] = this.BlogTitle (user);
				ViewData ["UserName"] = user;
				if (model.UserName == null) {
					model.UserName = user; 
					BlogEntry e = BlogManager.GetPost (model.UserName, model.Title);
					if (e == null) {
						return View ("TitleNotFound");
					} else {
						model = new BlogEditEntryModel (e);
						ModelState.Clear ();
						this.TryValidateModel (model);
					}
				} else if (model.UserName != user) {
					return View ("TitleNotFound");
				}
			}
			return View (model);
		}

		private string BlogTitle (string user)
		{
			return string.Format ("{0}'s blog", user);
		}
		public ActionResult Comment (BlogEditCommentModel model) {
			string username = Membership.GetUser ().UserName;
			ViewData ["SiteName"] = sitename;
			if (ModelState.IsValid) {
				if (!model.Preview) {
					BlogManager.Comment(username, model.PostId, model.CommentText, model.Visible);
					return UserPost (model.PostId);
				}
			}
			return View (model);
		}

		string defaultAvatar;

		[AcceptVerbs (HttpVerbs.Get)]
		public ActionResult Avatar (string user)
		{
			string avpath = Path.Combine (
				                Server.MapPath (AvatarDir), user + ".png");
			FileInfo fia = new FileInfo (avpath);
			if (!fia.Exists)
				fia = new FileInfo (Server.MapPath (defaultAvatar));
			return File (fia.OpenRead (), defaultAvatarMimetype);
		}

		[Authorize]
		public ActionResult Remove (string user, string title, string returnUrl)
		{
			if (!Roles.IsUserInRole ("Admin")) {
				string rguser = Membership.GetUser ().UserName;
				if (rguser != user) {
					ModelState.AddModelError (
						"Title", string.Format (
						"Vous n'avez pas de droits sur le Blog de {0}",
						user));
					return Return (returnUrl);
				}
			}
			BlogEntry e = BlogManager.GetPost (user, title);
			if (e == null) {
				ModelState.AddModelError (
					"Title",
					string.Format (
						"Aucun post portant le titre \"{0}\" pour l'utilisateur {1}",
						title, user));
				return Return (returnUrl);
			}
			BlogManager.RemovePost (user, title);
			return Return (returnUrl);
		}

		private ActionResult Return (string returnUrl)
		{
			if (!string.IsNullOrEmpty (returnUrl))
				return Redirect (returnUrl);
			else
				return RedirectToAction ("Index");
		}
	}
}