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

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>();
 
-			using (var conn = GetConnection())
+			try
 			{
-				conn.Open();
+				using (var conn = GetConnection())
+				{
+					conn.Open();
 
-				var query = "SELECT * FROM Year";
-				// TODO: Left off here for the YearStore
+					var query = "SELECT * FROM Year";
+
+					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
 	}
 }