public async Task<ActionResult> AddAlbum(Album model) {
            model.Id = Guid.NewGuid().ToString();
            var list = Request["filteredsongs"].Split(',').ToList();
            model.NumberOfSongs = list == null ? 0 : list.Count;
            List<Song> songList = new List<Song>();
            if(list.Count > 0) {
                foreach(var item in list) {
                    if(string.IsNullOrEmpty(item) || item != "0") {
                        var song = await db.Songs.Where(s => s.Id.Equals(item)).FirstOrDefaultAsync();
                        song.AlbumId = model.Id;
                        songList.Add(song);
                    }
                }
            }

            model.DateCreated = DateTime.Now;
            model.Songs = songList;
            var image = WebImage.GetImageFromRequest("file");
            string path = "";
            if(image != null) {
                path = Path.Combine(Server.MapPath("/Content/Image/AlbumImages/"), model.Id + "_" + Path.GetFileName(image.FileName));
                image.Save(path);
                model.Thumbnail = "/Content/Image/AlbumImages/" + model.Id + "_" + Path.GetFileName(image.FileName);
            }
            else {
                model.Thumbnail = "/Content/Image/AlbumImages/album_default.png";
            }

            if(ModelState.IsValid) {
                db.Albums.Add(model);
                await db.SaveChangesAsync();
            }
            return RedirectToAction("ListAlbums");
        }
        public async Task<ActionResult> EditAlbum(Album model) {
            var list = Request["filteredsongs"].Split(',').ToList();
            model.DateModified = DateTime.Now;
            model.NumberOfSongs = list == null ? 0 : list.Count;
            List<Song> songList = new List<Song>();
            if(list.Count > 0) {
                foreach(var item in list) {
                    if(string.IsNullOrEmpty(item) || item != "0") {
                        var song = await db.Songs.Where(s => s.Id.Equals(item)).FirstOrDefaultAsync();
                        song.AlbumId = model.Id;
                        songList.Add(song);
                    }
                }
            }

            var img = WebImage.GetImageFromRequest("file");
            if(img != null) {
                string imgPath = @"~/Content/Image/AlbumImages/" + model.Id + "_" + Path.GetFileName(img.FileName);
                img.Save(imgPath);
                model.Thumbnail = imgPath.Replace("~", "");
            }
            else {
                model.Thumbnail = "/Content/Image/AlbumImages/album_default.png";
            }

            if(ModelState.IsValid) {
                db.Entry(model).State = EntityState.Modified;
                await db.SaveChangesAsync();
                return RedirectToAction("ListAlbums");
            }
            return View("Error");
        }
 public async Task<ActionResult> AddAlbum() {
     var model = new Album();
     model.Publishers = await db.Publishers.ToListAsync();
     model.Performers = await db.Performers.ToListAsync();
     return View(model);
 }