public EmployeeDocumentResponse Create(EmployeeDocumentViewModel EmployeeDocument)
        {
            EmployeeDocumentResponse response = new EmployeeDocumentResponse();

            using (SqliteConnection db = new SqliteConnection("Filename=SirmiumERPGFC.db"))
            {
                db.Open();
                SqliteCommand insertCommand = db.CreateCommand();
                insertCommand.CommandText = SqlCommandInsertPart;

                try
                {
                    insertCommand = AddCreateParameters(insertCommand, EmployeeDocument);
                    insertCommand.ExecuteNonQuery();
                }
                catch (SqliteException error)
                {
                    MainWindow.ErrorMessage = error.Message;
                    response.Success        = false;
                    response.Message        = error.Message;
                    return(response);
                }
                db.Close();

                response.Success = true;
                return(response);
            }
        }
        public EmployeeDocumentResponse SetStatusDeleted(Guid identifier)
        {
            EmployeeDocumentResponse response = new EmployeeDocumentResponse();

            using (SqliteConnection db = new SqliteConnection("Filename=SirmiumERPGFC.db"))
            {
                db.Open();

                SqliteCommand insertCommand = new SqliteCommand();
                insertCommand.Connection = db;

                //Use parameterized query to prevent SQL injection attacks
                insertCommand.CommandText =
                    "UPDATE EmployeeDocuments SET ItemStatus = @ItemStatus WHERE Identifier = @Identifier";
                insertCommand.Parameters.AddWithValue("@ItemStatus", ItemStatus.Deleted);
                insertCommand.Parameters.AddWithValue("@Identifier", identifier);
                try
                {
                    insertCommand.ExecuteReader();
                }
                catch (SqliteException error)
                {
                    MainWindow.ErrorMessage = error.Message;
                    response.Success        = false;
                    response.Message        = error.Message;
                    return(response);
                }
                db.Close();

                response.Success = true;
                return(response);
            }
        }
        public EmployeeDocumentResponse GetEmployeeDocument(Guid identifier)
        {
            EmployeeDocumentResponse  response         = new EmployeeDocumentResponse();
            EmployeeDocumentViewModel EmployeeDocument = new EmployeeDocumentViewModel();

            using (SqliteConnection db = new SqliteConnection("Filename=SirmiumERPGFC.db"))
            {
                db.Open();
                try
                {
                    SqliteCommand selectCommand = new SqliteCommand(
                        SqlCommandSelectPart +
                        "FROM EmployeeDocuments " +
                        "WHERE Identifier = @Identifier;", db);
                    selectCommand.Parameters.AddWithValue("@Identifier", identifier);

                    SqliteDataReader query = selectCommand.ExecuteReader();

                    if (query.Read())
                    {
                        EmployeeDocumentViewModel dbEntry = Read(query);
                        EmployeeDocument = dbEntry;
                    }
                }
                catch (SqliteException error)
                {
                    MainWindow.ErrorMessage   = error.Message;
                    response.Success          = false;
                    response.Message          = error.Message;
                    response.EmployeeDocument = new EmployeeDocumentViewModel();
                    return(response);
                }
                db.Close();
            }
            response.Success          = true;
            response.EmployeeDocument = EmployeeDocument;
            return(response);
        }