Continuing work on issue #41 and #42. Added functionality to delete album and artist records

Models/Context/AlbumStoreContext.cs

@@ -273,6 +273,29 @@ namespace Icarus.Models.Context
 				_logger.Error(msg, "An error occurred");
 			}
 		}
+		public void DeleteAlbum(Album album)
+		{
+			try
+			{
+				using (var conn = GetConnection())
+				{
+					conn.Open();
+					var query = "DELETE Album WHERE AlbumId=@AlbumId";
+
+					using (var cmd = new MySqlCommand(query, conn))
+					{
+						cmd.Parameters.AddWithValue("@AlbumId", album.AlbumId);
+
+						cmd.ExecuteNonQuery();
+					}
+				}
+			}
+			catch (Exception ex)
+			{
+				var msg = ex.Message;
+				_logger.Error(msg, "An error occurred");
+			}
+		}
 
 		private List<Album> ParseData(MySqlDataReader reader)
 		{

Models/Context/ArtistStoreContext.cs

@@ -192,6 +192,32 @@ namespace Icarus.Models.Context
 				_logger.Error(msg, "An error occurred");
 			}
 		}
+		public void DeleteArtist(Artist artist)
+		{
+			try
+			{
+				_logger.Info("Deleting artist record");
+
+				using (var conn = GetConnection())
+				{
+					conn.Open();
+
+					var query = "DELETE Artist WHERE ArtistId=@ArtistId";
+
+					using (var cmd = new MySqlCommand(query, conn))
+					{
+						cmd.Parameters.AddWithValue("@ArtistId", artist.ArtistId);
+
+						cmd.ExecuteNonQuery();
+					}
+				}
+			}
+			catch (Exception ex)
+			{
+				var msg = ex.Message;
+				_logger.Error(msg, "An error occurred");
+			}
+		}
 
 		public Artist GetArtist(Artist artist)
 		{

Models/Context/GenreStoreContext.cs

@@ -123,6 +123,8 @@ namespace Icarus.Models.Context
 				_logger.Error(msg, "An error occurred");
 			}
 
+			_logger.Info("Genre does not exist");
+
 			return false;
 		}
 		public bool DoesGenreExist(Song song)
@@ -133,11 +135,11 @@ namespace Icarus.Models.Context
 				{
 					conn.Open();
 
-					var query = "SELECT * FROM Genre WHERE GenreName=@GenreName";
+					var query = "SELECT * FROM Song WHERE Genre=@Genre";
 
 					using (var cmd = new MySqlCommand(query, conn))
 					{
-						cmd.Parameters.AddWithValue("@GenreName", song.Genre);
+						cmd.Parameters.AddWithValue("@Genre", song.Genre);
 
 						using (var reader = cmd.ExecuteReader())
 						{
@@ -160,9 +162,83 @@ namespace Icarus.Models.Context
 				_logger.Error(msg, "An error occurred");
 			}
 
+			_logger.Info("Genre does not exist");
+
 			return false;
 		}
 
+		public void SaveGenre(Genre genre)
+		{
+			try
+			{
+				using (var conn = GetConnection())
+				{
+					var query = "INSERT INTO Genre(GenreName, SongCount) VALUES(" +
+						"@GenreName, @SongCount)";
+
+					using (var cmd = new MySqlCommand(query, conn))
+					{
+						cmd.Parameters.AddWithValue("@GenreName", genre.GenreName);
+						cmd.Parameters.AddWithValue("@SongCount", genre.SongCount);
+
+						cmd.ExecuteNonQuery();
+					}
+				}
+			}
+			catch (Exception ex)
+			{
+				var msg = ex.Message;
+				_logger.Error(msg, "An error occurred");
+			}
+		}
+		public void UpdateGenre(Genre genre)
+		{
+			try
+			{
+				using (var conn = GetConnection())
+				{
+					var query = "UPDATE Genre SET GenreName=@GenreName, " +
+						"SongCount=@SongCount WHERE GenreId=@GenreId";
+
+					using (var cmd = new MySqlCommand(query, conn))
+					{
+						cmd.Parameters.AddWithValue("@GenreName", genre.GenreName);
+						cmd.Parameters.AddWithValue("@SongCount", genre.SongCount);
+						cmd.Parameters.AddWithValue("@GenreId", genre.GenreId);
+
+						cmd.ExecuteNonQuery();
+					}
+				}
+			}
+			catch (Exception ex)
+			{
+				var msg = ex.Message;
+				_logger.Error(msg, "An error occurred");
+			}
+		}
+		public void DeleteGenre(Genre genre)
+		{
+			try
+			{
+				using (var conn = GetConnection())
+				{
+					var query = "DELETE Genre WHERE GenreId=@GenreId";
+
+					using (var cmd = new MySqlCommand(query, conn))
+					{
+						cmd.Parameters.AddWithValue("@GenreId", genre.GenreId);
+
+						cmd.ExecuteNonQuery();
+					}
+				}
+			}
+			catch (Exception ex)
+			{
+				var msg = ex.Message;
+				_logger.Error(msg, "An error occurred");
+			}
+		}
+
 		private List<Genre> ParseData(MySqlDataReader reader)
 		{
 			var genres = new List<Genre>();

Models/Context/YearStoreContext.cs

@@ -28,20 +28,245 @@ namespace Icarus.Models.Context
 
 
 		#region Methods
-		public List<Year> GetSongYear()
+		public List<Year> GetSongYears()
 		{
 			var yearValues = new List<Year>();
 
+			try
+			{
 				using (var conn = GetConnection())
 				{
 					conn.Open();
 
 					var query = "SELECT * FROM Year";
-				// TODO: Left off here for the YearStore
+
+					using (var cmd = new MySqlCommand(query, conn))
+					{
+						using (var reader = cmd.ExecuteReader())
+						{
+							yearValues = ParseData(reader);
+						}
+					}
+				}
+			}
+			catch (Exception ex)
+			{
+				var msg = ex.Message;
+				_logger.Error(msg, "An error occurred");
 			}
 
 			return yearValues;
 		}
+
+		public Year GetSongYear(Year year)
+		{
+			try
+			{
+				using (var conn = GetConnection())
+				{
+					conn.Open();
+
+					var query = "SELECT * FROM Year WHERE YearId=@YearId";
+
+					using (var cmd = new MySqlCommand(query, conn))
+					{
+						cmd.Parameters.AddWithValue("@YearId", year.YearId);
+
+						using (var reader = cmd.ExecuteReader())
+						{
+							year = ParseSingleData(reader);
+						}
+					}
+				}
+			}
+			catch (Exception ex)
+			{
+				var msg = ex.Message;
+				_logger.Error(msg, "An error occurred");
+			}
+
+			return year;
+		}
+
+		public bool DoesYearExist(Year year)
+		{
+			try
+			{
+				using (var conn = GetConnection())
+				{
+					conn.Open();
+
+					var query = "SELECT * FROM Year WHERE YearId=@YearId";
+
+					using (var cmd = new MySqlCommand(query, conn))
+					{
+						cmd.Parameters.AddWithValue("@YearId", year.YearId);
+
+						using (var reader = cmd.ExecuteReader())
+						{
+							year = ParseSingleData(reader);
+
+							if (year.YearValue > 0)
+							{
+								_logger.Info("Year record exists");
+
+								return true;
+							}
+						}
+					}
+				}
+			}
+			catch (Exception ex)
+			{
+				var msg = ex.Message;
+				_logger.Error(msg, "An error occurred");
+			}
+
+			_logger.Info("Year record does not exist");
+
+			return false;
+		}
+		public bool DoesYearExist(Song song)
+		{
+			try
+			{
+				using (var conn = GetConnection())
+				{
+					conn.Open();
+
+					var query = "SELECT * FROM Song WHERE Year=@Year";
+
+					using (var cmd = new MySqlCommand(query, conn))
+					{
+						cmd.Parameters.AddWithValue("@Year", song.Year);
+
+						using (var reader = cmd.ExecuteReader())
+						{
+							var year = ParseSingleData(reader);
+
+							if (year.YearValue > 0)
+							{
+								_logger.Info("Year record exists");
+
+								return true;
+							}
+						}
+					}
+				}
+			}
+			catch (Exception ex)
+			{
+				var msg = ex.Message;
+				_logger.Error(msg, "An error occurred");
+			}
+
+			_logger.Info("Year record does not exist");
+
+			return false;
+		}
+
+		public void SaveYear(Year year)
+		{
+			try
+			{
+				using (var conn = GetConnection())
+				{
+					conn.Open();
+
+					var query = "INSERT INTO Year(YearValue, SongCount) VALUES(" +
+						"@YearValue, @SongCount)";
+
+					using (var cmd = new MySqlCommand(query, conn))
+					{
+						cmd.Parameters.AddWithValue("@YearValue", year.YearValue);
+						cmd.Parameters.AddWithValue("@SongCount", year.SongCount);
+
+						cmd.ExecuteNonQuery();
+					}
+				}
+			}
+			catch (Exception ex)
+			{
+				var msg = ex.Message;
+				_logger.Error(msg, "An error occurred");
+			}
+		}
+		public void UpdateYear(Year year)
+		{
+			try
+			{
+				// TODO: Add functionality for updating the Year record
+			}
+			catch (Exception ex)
+			{
+				var msg = ex.Message;
+				_logger.Error(msg, "An error occurred");
+			}
+		}
+		public void DeleteYear(Year year)
+		{
+			try
+			{
+				using (var conn = GetConnection())
+				{
+					conn.Open();
+
+					var query = "DELETE Year WHERE YearId=@YearId";
+
+					using (var cmd = new MySqlCommand(query, conn))
+					{
+						cmd.Parameters.AddWithValue("@YearId", year.YearId);
+
+						cmd.ExecuteNonQuery();
+					}
+				}
+			}
+			catch (Exception ex)
+			{
+				var msg = ex.Message;
+				_logger.Error(msg, "An error occurred");
+			}
+		}
+
+		private List<Year> ParseData(MySqlDataReader reader)
+		{
+			var yearValues = new List<Year>();
+
+			while (reader.Read())
+			{
+				var id = Convert.ToInt32(reader["YearId"].ToString());
+				var year = Convert.ToInt32(reader["YearValue"].ToString());
+				var songCount = Convert.ToInt32(reader["SongCount"].ToString());
+
+				yearValues.Add(new Year
+				{
+					YearId = id,
+					YearValue = year,
+					SongCount = songCount
+				});
+			}
+
+
+			return yearValues;
+		}
+
+		private Year ParseSingleData(MySqlDataReader reader)
+		{
+			var yearValue = new Year();
+
+			while (reader.Read())
+			{
+				var id = Convert.ToInt32(reader["YearId"].ToString());
+				var year = Convert.ToInt32(reader["YearValue"].ToString());
+				var songCount = Convert.ToInt32(reader["SongCount"].ToString());
+
+				yearValue.YearId = id;
+				yearValue.YearValue = year;
+				yearValue.SongCount = songCount;
+			}
+
+			return yearValue;
+		}
 		#endregion
 	}
 }

Startup.cs

@@ -98,7 +98,6 @@ namespace Icarus
 
 			var connString = Configuration.GetConnectionString("DefaultConnection");
 
-			// TODO: Add the Genre and Year stores #41 and #42.
 	    		services.Add(new ServiceDescriptor(typeof(MusicStoreContext), 
 						new MusicStoreContext(Configuration
 							.GetConnectionString("DefaultConnection"))));  
@@ -111,6 +110,14 @@ namespace Icarus
 						new ArtistStoreContext(Configuration
 							.GetConnectionString("DefaultConnection"))));
 
+			services.Add(new ServiceDescriptor(typeof(GenreStoreContext),
+						new GenreStoreContext(Configuration
+							.GetConnectionString("DefaultConnection"))));
+
+			services.Add(new ServiceDescriptor(typeof(YearStoreContext),
+						new YearStoreContext(Configuration
+							.GetConnectionString("DefaultConnection"))));
+
 			services.Add(new ServiceDescriptor(typeof(UserStoreContext), 
 						new UserStoreContext(Configuration
 							.GetConnectionString("DefaultConnection"))));
@@ -119,7 +126,8 @@ namespace Icarus
 			services.AddDbContext<AlbumContext>(options => options.UseMySQL(connString));
 			services.AddDbContext<ArtistContext>(options => options.UseMySQL(connString));
 			services.AddDbContext<UserContext>(options => options.UseMySQL(connString));
-			// TODO: Add the Genre and Year contexts #41 and #42
+			services.AddDbContext<GenreContext>(options => options.UseMySQL(connString));
+			services.AddDbContext<YearContext>(options => options.UseMySQL(connString));
         	}
 
         	// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.