Updated the folder structure for review

.gitignore

@@ -12,6 +12,8 @@
 
 # Env files.
 .env
+FlashCards.Review/FlashCard.App/app.config
+
 
 # User-specific files (MonoDevelop/Xamarin Studio)
 *.userprefs
@@ -480,3 +482,8 @@ $RECYCLE.BIN/
 *.lnk
 
 .idea
+
+
+#temp files
+FlashCards.Review/FlashCard.App/obj/
+FlashCards.Review/FlashCard.App/DataBaseScripts/

FlashCards.Review/FlashCard.App/Controller/FlashCardController.cs

@@ -0,0 +1,49 @@
+using FlashCardLearning.DataAccess;
+using FlashCardLearning.Model.entities;
+
+namespace FlashCardLearning.Controller
+{
+    class FlashCardController
+    {
+        FlashCardDataAccess flashCardDataAccess = new();
+
+        internal void CreateFlashCard(string? question, string answer, int stackId)
+        {
+            FlashCards flashCardEntity = new();
+            flashCardEntity.Question = question;
+            flashCardEntity.Answer = answer;
+            flashCardEntity.StackId = stackId;
+
+            flashCardDataAccess.AddFlashCard(flashCardEntity);
+        }
+
+        internal bool CheckFlashCardAvailable(int flashCardId)
+        {
+            bool flashCardAvailable = flashCardDataAccess.CheckFlashCardAvailable(flashCardId);
+            return flashCardAvailable;
+        }
+
+        internal void EditFlashCard(int flashCardId, string question, string answer)
+        {
+            FlashCards flashCardEntity = new();
+            flashCardEntity.Id = flashCardId;
+            flashCardEntity.Question = question;
+            flashCardEntity.Answer = answer;
+
+            flashCardDataAccess.UpdateFlashCard(flashCardEntity);
+        }
+
+        internal void RemoveFlashCard(int flashCardId)
+        {
+            flashCardDataAccess.DeleteFlashCard(flashCardId);
+        }
+
+        internal List<FlashCards> ViewFlashCards(int StackId)
+        {
+            List<FlashCards> flashCards = flashCardDataAccess.SelectFlashCard(StackId);
+            return flashCards;
+        }
+
+
+    }
+}

FlashCards.Review/FlashCard.App/Controller/StackController.cs

@@ -0,0 +1,52 @@
+using FlashCardLearning.DataAccess;
+using FlashCardLearning.Model.entities;
+
+
+namespace FlashCardLearning.Controller
+{
+    internal class StackController
+    {
+        StackDataAccess stackDataAccess = new();
+
+        internal void CreateStack(string stackName)
+        {
+            Stacks stackEntity = new();
+            stackEntity.StackName = stackName;
+
+            stackDataAccess.Addstack(stackEntity);
+        }
+
+        internal List<Stacks> ViewStack()
+        {
+            List<Stacks> stacks = stackDataAccess.Selectstack();
+            return stacks;
+        }
+
+        internal bool CheckStackAvailable(int stackId)
+        {
+            bool StackAvailable = stackDataAccess.CheckStackAvailable(stackId);
+            return StackAvailable;
+        }
+
+        internal void EditStack(int stackId, string stackName)
+        {
+            Stacks stackEntity = new();
+
+            stackEntity.Id = stackId;
+            stackEntity.StackName = stackName;
+
+            stackDataAccess.UpdateStack(stackEntity);
+        }
+
+        internal void RemoveStack(int stackId)
+        {
+            stackDataAccess.DeleteStack(stackId);
+
+            stackDataAccess.DeleteFlashCards(stackId);
+
+            stackDataAccess.DeleteSudySession(stackId);
+        }
+
+
+    }
+}

FlashCards.Review/FlashCard.App/Controller/StudyController.cs

@@ -0,0 +1,41 @@
+using FlashCardLearning.DataAccess;
+using FlashCardLearning.Model.entities;
+
+namespace FlashCardLearning.Controller
+{
+    internal class StudyController
+    {
+        StudyDataAccess studyDataAccess = new();
+        internal void TrackSession(string flashCardslist, int stackId, int durationPerSession, int totalPoints)
+        {
+            StudySession studySession = new();
+            studySession.FlashCardsLearned = flashCardslist;
+            studySession.StackId = stackId;
+            studySession.SessionDuration = durationPerSession;
+            studySession.Points = totalPoints;
+
+            studyDataAccess.AddSession(studySession);
+        }
+
+
+        internal List<StackReport> ViewReports(int year)
+        {
+            List<StackReport> report = studyDataAccess.SelectReport(year);
+            return report;
+        }
+
+        internal List<StudySessionHistory> ViewSessionLog(string? startDate, string? endDate)
+        {
+            StudySessionHistoryInput studySessionHistoryInput = new();
+
+            DateOnly startDateOnly = DateOnly.Parse(startDate);
+            DateOnly endDateOnly = DateOnly.Parse(endDate);
+
+            studySessionHistoryInput.SessionStartDate = startDateOnly;
+            studySessionHistoryInput.SessionEndDate = endDateOnly;
+
+            List<StudySessionHistory> studySessionHistories = studyDataAccess.SelectSessionLog(studySessionHistoryInput);
+            return studySessionHistories;
+        }
+    }
+}

FlashCards.Review/FlashCard.App/DataAccess/FlashCardDataAccess.cs

@@ -0,0 +1,184 @@
+using FlashCardLearning.Model.entities;
+using Microsoft.Data.SqlClient;
+using System.Configuration;
+using System.Data;
+
+namespace FlashCardLearning.DataAccess
+{
+    internal class FlashCardDataAccess
+    {
+
+        string connectionString = ConfigurationManager.ConnectionStrings["DefaultConnection"]?.ConnectionString;
+
+        internal void AddFlashCard(FlashCards flashCardEntity)
+        {
+            string query = "INSERT INTO FlashCards (question, answer, stack_id) VALUES (@question, @answer, @stackId)";
+
+            using (SqlConnection connection = new SqlConnection(connectionString))
+            {
+                connection.Open();
+
+                try
+                {
+                    using (SqlCommand command = new SqlCommand(query, connection))
+                    {
+                        command.Parameters.Add("@question", SqlDbType.VarChar).Value = flashCardEntity.Question;
+                        command.Parameters.Add("@answer", SqlDbType.VarChar).Value = flashCardEntity.Answer;
+                        command.Parameters.Add("@stackId", SqlDbType.VarChar).Value = flashCardEntity.StackId;
+                        command.ExecuteNonQuery();
+
+                        Console.WriteLine();
+                        Console.WriteLine($"Flash Card has been created succesfully");
+                        Console.WriteLine();
+                    }
+                }
+                catch (Exception ex)
+                {
+                    Console.WriteLine($"SQL Error: {ex.Message}");
+                }
+            }
+        }
+
+        internal List<FlashCards> SelectFlashCard(int StackId)
+        {
+
+            string query = "SELECT id, question, answer FROM FlashCards WHERE stack_id = @StackId";
+
+            List<FlashCards> flashCards = new List<FlashCards>();
+
+            using (SqlConnection connection = new SqlConnection(connectionString))
+            {
+                connection.Open();
+                try
+                {
+                    using (SqlCommand command = new SqlCommand(query, connection))
+                    {
+                        command.Parameters.Add("@StackId", SqlDbType.VarChar).Value = StackId;
+
+                        using (SqlDataReader reader = command.ExecuteReader())
+                        {
+                            while (reader.Read())
+                            {
+                                flashCards.Add(new FlashCards
+                                {
+                                    Id = reader.GetInt32(reader.GetOrdinal("Id")),
+                                    Question = reader.GetString(reader.GetOrdinal("question")),
+                                    Answer = reader.GetString(reader.GetOrdinal("answer"))
+                                });
+                            }
+
+                        }
+                    }
+                }
+                catch (Exception ex)
+                {
+                    Console.WriteLine($"SQL Error: {ex.Message}");
+                }
+            }
+            return flashCards;
+        }
+        internal bool CheckFlashCardAvailable(int flashCardId)
+        {
+            string query = "SELECT id FROM FlashCards WHERE id=@flashCardId";
+
+            bool flashCardAvailable = true;
+
+            using (SqlConnection connection = new SqlConnection(connectionString))
+            {
+                connection.Open();
+                try
+                {
+                    using (SqlCommand command = new SqlCommand(query, connection))
+                    {
+                        command.Parameters.Add("@flashCardId", SqlDbType.Int).Value = flashCardId;
+                        object? result = command.ExecuteScalar();
+                        if (result == null)
+                        {
+                            flashCardAvailable = false;
+                        }
+                    }
+                }
+                catch (Exception ex)
+                {
+                    Console.WriteLine($"SQL Error: {ex.Message}");
+                }
+            }
+            return flashCardAvailable;
+        }
+
+        internal void UpdateFlashCard(FlashCards flashCardEntity)
+        {
+            string question = "";
+            string answer = "";
+
+            if (flashCardEntity.Question != "" && flashCardEntity.Answer != "")
+            {
+                question = "question = @question,";
+                answer = " answer = @answer";
+
+            }
+            else if (flashCardEntity.Answer != "")
+            {
+                answer = " answer = @answer";
+            }
+            else if (flashCardEntity.Question != "")
+            {
+                question = "question = @question";
+            }
+
+
+            string query = $"UPDATE FlashCards SET {question} {answer} WHERE id = @flashCardId";
+
+            using (SqlConnection connection = new SqlConnection(connectionString))
+            {
+                connection.Open();
+                try
+                {
+                    using (SqlCommand command = new SqlCommand(query, connection))
+                    {
+                        command.Parameters.Add("@flashCardId", SqlDbType.Int).Value = flashCardEntity.Id;
+                        command.Parameters.Add("@question", SqlDbType.VarChar).Value = flashCardEntity.Question;
+                        command.Parameters.Add("@answer", SqlDbType.VarChar).Value = flashCardEntity.Answer;
+                        command.ExecuteNonQuery();
+
+                        Console.WriteLine();
+                        Console.WriteLine($"Flash Card updated successfully");
+                        Console.WriteLine();
+                    }
+                }
+                catch (Exception ex)
+                {
+                    Console.WriteLine($"SQL Error: {ex.Message}");
+                }
+            }
+        }
+
+        internal void DeleteFlashCard(int flashCardId)
+        {
+            string query = "DELETE FROM FlashCards WHERE id = @flashCardId";
+
+            using (SqlConnection connection = new SqlConnection(connectionString))
+            {
+                connection.Open();
+                try
+                {
+                    using (SqlCommand command = new SqlCommand(query, connection))
+                    {
+                        command.Parameters.Add("@flashCardId", SqlDbType.Int).Value = flashCardId;
+                        command.ExecuteNonQuery();
+
+                        Console.WriteLine();
+                        Console.WriteLine($"Flash Card deleted successfully");
+                        Console.WriteLine();
+                    }
+                }
+                catch (Exception ex)
+                {
+                    Console.WriteLine($"SQL Error: {ex.Message}");
+                }
+            }
+        }
+    }
+
+}
+