login completed, added the encryption class

Author: nipunanz

Library_Management_System_v0.1/Library_Management_System_v0.1/Home.Designer.cs

@@ -17,6 +17,13 @@ public Home()
             InitializeComponent();
         }
 
+        public Home(String userType)
+        {
+            InitializeComponent();
+            buttonRegNewBook.Hide();
+            buttonManageBooks.Hide();
+        }
+
         private void label2_Click(object sender, EventArgs e)
         {
 
@@ -26,5 +33,10 @@ private void buttonSaveBook_Click(object sender, EventArgs e)
         {
 
         }
+
+        private void Home_Load(object sender, EventArgs e)
+        {
+
+        }
     }
 }

Library_Management_System_v0.1/Library_Management_System_v0.1/Home.cs

@@ -146,6 +146,7 @@
     <Compile Include="Return_Books.Designer.cs">
       <DependentUpon>Return_Books.cs</DependentUpon>
     </Compile>
+    <Compile Include="StringCipher.cs" />
     <EmbeddedResource Include="Add_New_Author.resx">
       <DependentUpon>Add_New_Author.cs</DependentUpon>
     </EmbeddedResource>

Library_Management_System_v0.1/Library_Management_System_v0.1/Library_Management_System_v0.1.csproj

@@ -25,7 +25,70 @@ private void label3_Click(object sender, EventArgs e)
 
         private void button1_Click(object sender, EventArgs e)
         {
-          
+            //+++++++++ get input values from login form +++++++++//
+            String email = textBoxEmail.Text;
+            String password = textBoxPassword.Text;
+
+            //+++++++++ null & empty check for input values +++++++++//
+            if ((email == null || email.Equals("")) && (password == null || password.Equals(""))) {
+                MessageBox.Show("Email or Password Can't be Empty", "Authentication Error!", MessageBoxButtons.OK, MessageBoxIcon.Warning);
+            }
+            else
+            {
+                String loginQuery = "SELECT * FROM user_login WHERE emailAddress = @email";
+                String getUserRole = "SELECT * FROM user_role WHERE id = @userRoleId";
+                MySqlConnection mySqlConnection = DataConnection.getDBConnection();
+                mySqlConnection.Open();
+                MySqlCommand command = new MySqlCommand(loginQuery, mySqlConnection);
+                command.CommandText = loginQuery;
+                command.Parameters.AddWithValue("@email", email);
+                MySqlDataReader mySqlDataReader = command.ExecuteReader();
+
+                if (mySqlDataReader.HasRows)
+                {
+                    while (mySqlDataReader.Read()) {
+                        String encPassword = mySqlDataReader.GetString("password");
+                        String decPassword = StringCipher.Decrypt(encPassword, LoginDetails.passwordKey);
+                        if (password.Equals(decPassword))
+                        {
+                            String userRoleId = mySqlDataReader.GetString("user_role_id");
+                            MySqlCommand commandGetUserRole = new MySqlCommand(getUserRole, mySqlConnection);
+                            commandGetUserRole.CommandText = getUserRole;
+                            commandGetUserRole.Parameters.AddWithValue("@userRoleId", userRoleId);
+                            mySqlDataReader.Close();
+                            MySqlDataReader mySqlDataReader2 = commandGetUserRole.ExecuteReader();
+                            if (mySqlDataReader2.HasRows)
+                            {
+                                mySqlDataReader2.Read();
+                                LoginDetails.userRole = mySqlDataReader2.GetString("name");
+                                if (LoginDetails.userRole.Equals("Administrative Librarian")) {
+                                    Home home = new Home();
+                                    home.Show();
+                                }
+                                else
+                                {
+                                    Home home = new Home("librarian");
+                                    home.Show();
+                                }
+                                this.Hide();
+
+                                break;
+                            }
+                            else
+                            {
+                                MessageBox.Show("User type does not exists", "Authentication Error!", MessageBoxButtons.OK, MessageBoxIcon.Warning);
+                                break;
+                            }
+                        }
+                    }
+                }
+                else {
+                    MessageBox.Show("Account does not exists", "Authentication Error!", MessageBoxButtons.OK, MessageBoxIcon.Warning);
+                }
+
+                mySqlConnection.Close();
+            }
+            
         }
     }
 }

Library_Management_System_v0.1/Library_Management_System_v0.1/Login.Designer.cs

@@ -6,9 +6,12 @@
 
 namespace Library_Management_System_v0._1
 {
+
     public class LoginDetails
     {
         public static String userProfileID = "2";
         public static String userLoginHistoryID = "5";
+        public static String userRole = "";
+        public static String passwordKey = "123";
     }
 }

Library_Management_System_v0.1/Library_Management_System_v0.1/Login.cs

@@ -16,7 +16,7 @@ static void Main()
         {
             Application.EnableVisualStyles();
             Application.SetCompatibleTextRenderingDefault(false);
-            Application.Run(new Register_new_books());
+            Application.Run(new Login());
         }
     }
 }