using System;

using System.Collections.Generic;

using System.IO;

using System.Linq;

using System.Xml.Linq;



namespace MyVideoViewerLibrary.MyMoviesXML

{

    public class MyMoviesXMLBusiness : IMoviesBusiness

    {

        string[] extensions = new string[] { ".mov", ".avi", ".mpeg", ".mpg", ".mkv", ".wmv", ".mp4", ".dvr-ms", ".m2ts", ".ts", ".divx" };

        private List<Movie> movies;

        private List<Genre> genres;

        private List<Studio> studios;

        public List<Generic> categories;

        public List<Generic> mpaaRatings;



        public MyMoviesXMLBusiness()

        {

            genres = new List<Genre>();

            movies = new List<Movie>();

            studios = new List<Studio>();

            categories = new List<Generic>();

            mpaaRatings = new List<Generic>();



            LoadMovies();

        }



        public void LoadMovies()

        {

            if (!File.Exists(Settings.Default.MyMoviesXmlFile))

                throw new Exception("File does not exist.");



            XDocument doc = XDocument.Load(Settings.Default.MyMoviesXmlFile);

            XElement root = doc.Element("Titles");

            if (root == null)

                return;

            int tempInt;

            DateTime tempDate;



            foreach (XElement xmovie in root.Elements("Title"))

            {

                Movie movie = new Movie()

                    {

                        Title = xmovie.Element("OriginalTitle") != null ? xmovie.Element("OriginalTitle").Value : "",

                        SortTitle = xmovie.Element("SortTitle") != null ? xmovie.Element("SortTitle").Value : "",

                        Description = xmovie.Element("Description") != null ? xmovie.Element("Description").Value : "",

                        IMDBId = xmovie.Element("IMDB") != null ? xmovie.Element("IMDB").Value : "",

                    };



                if (xmovie.Element("RunningTime") != null)

                {

                    if (int.TryParse(xmovie.Element("RunningTime").Value, out tempInt))

                        movie.Runtime = tempInt;

                }



                if (xmovie.Element("Added") != null)

                {

                    if (DateTime.TryParse(xmovie.Element("Added").Value, out tempDate))

                        movie.DateAdded = tempDate;

                }                



                if (xmovie.Element("ParentalRating") != null)

                {

                    XElement parentalRating = xmovie.Element("ParentalRating");

                    if (parentalRating.Element("Value") != null && int.TryParse(parentalRating.Element("Value").Value, out tempInt))

                    {                        

                        movie.MPAARating = MoviesBusiness.GetMPAARatingText((MPAARating)tempInt);

                        Generic mrating = mpaaRatings.SingleOrDefault(m => m.Name == movie.MPAARating);

                        if (mrating == null)

                        {

                            mrating = new Generic(movie.MPAARating);

                            mpaaRatings.Add(mrating);

                        }

                        mrating.Movies.Add(movie);

                    }



                    if (parentalRating.Element("Description") != null)

                        movie.MPAARatingDescription = parentalRating.Element("Description").Value;

                }



                if (xmovie.Element("Added") != null)

                {

                    if (DateTime.TryParse(xmovie.Element("Added").Value, out tempDate))

                        movie.DateAdded = tempDate;

                }



                if (xmovie.Element("ReleaseDate") != null)

                {

                    if (DateTime.TryParse(xmovie.Element("ReleaseDate").Value, out tempDate))

                        movie.ReleaseDate = tempDate;

                }

                XElement localTrailers = xmovie.Element("LocalTrailer");

                if (localTrailers != null && localTrailers.Element("URL") != null && localTrailers.Element("Type") != null)

                {

                    if (int.TryParse(localTrailers.Element("Type").Value, out tempInt))

                    {

                        if(tempInt == 1)

                            movie.Trailer = localTrailers.Element("URL").Value;

                    }

                }



                var q = xmovie.Descendants("Disc").Where(d => d.Element("LocationSideA") != null && !string.IsNullOrEmpty(d.Element("LocationSideA").Value));

                XElement disc1 = q.FirstOrDefault();

                if (disc1 != null)

                {

                    DirectoryInfo folder = new DirectoryInfo(disc1.Element("LocationSideA").Value);

                    if (folder.Exists)

                    {

                        movie.PosterImageLocation = Path.Combine(folder.FullName, "folder.jpg");

                        movie.BackgroundImageLocation = Path.Combine(folder.FullName, "background.jpg");

                    }

                }



                if (xmovie.Element("Genres") != null)

                {

                    foreach (XElement xgenre in xmovie.Element("Genres").Descendants("Genre"))

                    {

                        if (xgenre == null || string.IsNullOrEmpty(xgenre.Value))

                            continue;

                        Genre genre = genres.SingleOrDefault(g => g.GenreDesc == xgenre.Value);

                        if (genre == null)

                        {

                            genre = new Genre() { GenreDesc = xgenre.Value, Movies = new List<Movie>() };

                            genres.Add(genre);

                        }

                        movie.Genres.Add(genre);

                        genre.Movies.Add(movie);

                    }

                }



                if (xmovie.Element("Studios") != null)

                {

                    foreach (XElement xstudio in xmovie.Element("Studios").Descendants("Studio"))

                    {

                        if (xstudio == null || string.IsNullOrEmpty(xstudio.Value))

                            continue;

                        Studio studio = studios.SingleOrDefault(g => g.Name == xstudio.Value);

                        if (studio == null)

                        {

                            studio = new Studio() { Name = xstudio.Value, Movies = new List<Movie>() };

                            studios.Add(studio);

                        }

                        movie.Studios.Add(studio);

                        studio.Movies.Add(movie);

                    }

                }



                if (xmovie.Element("Categories") != null)

                {

                    foreach (XElement xcat in xmovie.Element("Categories").Descendants("Category"))

                    {

                        if (xcat == null || string.IsNullOrEmpty(xcat.Value))

                            continue;

                        Generic category = categories.SingleOrDefault(g => g.Name == xcat.Value);

                        if (category == null)

                        {

                            category = new Generic() { Name = xcat.Value, Movies = new List<Movie>() };

                            categories.Add(category);

                        }

                        category.Movies.Add(movie);

                    }

                }

                XElement persons = xmovie.Element("Persons");

                if (persons != null)

                {



                    IEnumerable<XElement> directors = persons.Elements("Person").Where(p => p.Element("Type") != null && p.Element("Type").Value == "Director");

                    if (directors != null)

                        movie.Director = string.Join(", ", directors.Select(d => d.Element("Name").Value).ToArray());

                }



                movie.OnGetFiles += new GetFilesEvent(movie_OnGetFiles);



                movie.Data = xmovie;

                movies.Add(movie);

            }

        }



        void movie_OnGetFiles(Movie movie)

        {

            XElement xmovie = movie.Data as XElement;

            var discs = xmovie.Descendants("Disc").Where(d => d.Element("LocationSideA") != null && !string.IsNullOrEmpty(d.Element("LocationSideA").Value));

            foreach (XElement disc in discs)

            {

                DirectoryInfo folder = new DirectoryInfo(disc.Element("LocationSideA").Value);

                if (folder.Exists)

                {

                    DirectoryInfo dvdFolder = folder.GetDirectories("VIDEO_TS").FirstOrDefault();

                    if (dvdFolder != null)

                    {

                        movie.Files.Add(dvdFolder.FullName);

                    }



                    foreach (FileInfo file in folder.GetFiles().OrderBy(f => f.Name))

                    {

                        if (Path.GetFileNameWithoutExtension(file.Name) == "trailer" && extensions.Contains(file.Extension))

                        {

                            movie.Trailer = file.FullName;

                            continue;

                        }

                        else if (extensions.Contains(file.Extension))

                        {

                            movie.Files.Add(file.FullName);

                        }

                    }



                }

            }

        }



        #region IMoviesBusiness Members



        public List<Movie> GetMovies()

        {

            return movies;

        }



        public List<CommandItem> GetFilterItems()

        {

            List<CommandItem> filters = new List<CommandItem>();



            filters.Add(new CommandItem("Title", (int)FilterType.Title));

            filters.Add(new CommandItem("Last Added", (int)FilterType.LastAdded));

            filters.Add(new CommandItem("MPAA Rating", (int)FilterType.MPAARating));

            filters.Add(new CommandItem("Genre", (int)FilterType.Genre));

            filters.Add(new CommandItem("Release Date", (int)FilterType.ReleaseDate));

            filters.Add(new CommandItem("Runtime", (int)FilterType.Runtime));



            return filters;

        }



        public List<CommandItem> GetCommandItems()

        {

            List<CommandItem> commandItems = new List<CommandItem>();

            commandItems.Add(new CommandItem("All Titles", 0));

            commandItems.Add(new CommandItem("Categories", 1));

            commandItems.Add(new CommandItem("Genres", 2));

            commandItems.Add(new CommandItem("MPAA Ratings", 3));

            return commandItems;

        }



        public List<CommandItem> GetCommandItems(int id)

        {

            List<CommandItem> commandItems = new List<CommandItem>();

            switch (id)

            {

                case 1:

                    

                    foreach (Generic category in categories.OrderBy(g=>g.Name))

                    {

                        commandItems.Add(new CommandItem(string.Format("{0} ({1})", category.Name, category.Movies.Count), category));

                    }

                    break;

                case 2:



                    foreach (Genre genre in genres.OrderBy(g => g.GenreDesc))

                    {

                        commandItems.Add(new CommandItem(string.Format("{0} ({1})", genre.GenreDesc, genre.Movies.Count), genre));

                    }

                    break;

                case 3:

                    foreach (Generic rating in mpaaRatings.OrderBy(g => g.Name))

                    {

                        commandItems.Add(new CommandItem(string.Format("{0} ({1})", rating.Name, rating.Movies.Count), rating));

                    }

                    break;                

                default:

                    break;

            }





            return commandItems;

        }



        public List<Movie> GetMoviesFromCommand(int commandId, object data)

        {

            switch (commandId)

            {

                case 0:

                    return movies;

                case 1:

                    Generic category = data as Generic;

                    return category.Movies;

                case 2:

                    Genre genre = data as Genre;

                    return genre.Movies;

                case 3:

                    Generic rating = data as Generic;

                    return rating.Movies;

            }

            return new List<Movie>();

        }



        public bool SupportsWatched()

        {

            return false;

        }



        #endregion

    }

}