#8: Implement User Permissions System Base and usage with Tabs

Signed-off-by: Dominik Säume <Dominik.Saeume@hmmh.de>

.idea/sqlDataSources.xml

@@ -27,9 +27,12 @@
               <option value="file://$PROJECT_DIR$/src/main/resources/de/hitec/nhplus/nurse/database/Nurse.sql" />
               <option value="file://$PROJECT_DIR$/src/main/resources/de/hitec/nhplus/medication/database/Medication.sql" />
               <option value="file://$PROJECT_DIR$/src/main/resources/de/hitec/nhplus/medication/database/Medication_Ingredient.sql" />
+              <option value="file://$PROJECT_DIR$/src/main/resources/de/hitec/nhplus/login/database/User.sql" />
+              <option value="file://$PROJECT_DIR$/src/main/resources/de/hitec/nhplus/login/database/UserPermission.sql" />
+              <option value="file://$PROJECT_DIR$/src/main/resources/de/hitec/nhplus/login/database/UserToNurse.sql" />
             </array>
           </option>
-          <option name="outLayout" value="File per object by schema.groovy" />
+          <option name="outLayout" value="File per object.groovy" />
         </State>
       </list>
     </option>

README.md

@@ -1,3 +1,6 @@
 [![Static Badge](https://img.shields.io/badge/Wiki-Wiki?style=for-the-badge&logo=wikipedia&color=slategray)](https://git.euph.dev/SZUT/nhplus/wiki)
 [![Static Badge](https://img.shields.io/badge/Tests-Tests?style=for-the-badge&logo=textpattern&logoColor=cyan&color=blue)](https://git.euph.dev/SZUT/nhplus/wiki/Tests)
-[![Static Badge](https://img.shields.io/badge/Javadoc-Javadoc?style=for-the-badge&logo=readthedocs&logoColor=orange&color=beige)](https://nhplus.euph.dev)
+[![Static Badge](https://img.shields.io/badge/Javadoc-Javadoc?style=for-the-badge&logo=readthedocs&logoColor=orange&color=beige)](https://nhplus.euph.dev)
+[![Static Badge](https://img.shields.io/badge/Credentails-Credentails?style=for-the-badge&logo=keepassxc&logoColor=lime&color=darkgreen)](https://git.euph.dev/SZUT/nhplus/wiki/Test-Anmelde-Daten)
+
+

src/main/java/de/hitec/nhplus/Main.java

@@ -1,11 +1,15 @@
 package de.hitec.nhplus;
 
 import de.hitec.nhplus.datastorage.ConnectionBuilder;
+import de.hitec.nhplus.login.LoginController;
+import de.hitec.nhplus.login.User;
+import de.hitec.nhplus.main.MainWindowController;
 import javafx.application.Application;
 import javafx.application.Platform;
 import javafx.fxml.FXMLLoader;
 import javafx.scene.Scene;
 import javafx.scene.control.TabPane;
+import javafx.scene.layout.BorderPane;
 import javafx.stage.Stage;
 
 import java.io.IOException;
@@ -33,13 +37,37 @@ public class Main extends Application {
     @Override
     public void start(Stage primaryStage) {
         this.primaryStage = primaryStage;
-        executeMainApplication();
+        executePassword();
+    }
+
+    private void executePassword() {
+        try {
+
+            FXMLLoader loader = new FXMLLoader(Main.class.getResource("/de/hitec/nhplus/login/LoginView.fxml"));
+            BorderPane pane = loader.load();
+            Scene scene = new Scene(pane);
+            Stage loginStage = new Stage();
+            loginStage.setTitle("NHPlus");
+            loginStage.setScene(scene);
+            loginStage.setResizable(false);
+
+            LoginController controller = loader.getController();
+            controller.initialize(loginStage);
+
+            loginStage.showAndWait();
+
+            if(controller.user != null){
+                executeMainApplication(controller.user);
+            }
+        } catch (IOException exception) {
+            exception.printStackTrace();
+        }
     }
 
     /**
      * Executes the main application.
      */
-    private void executeMainApplication() {
+    private void executeMainApplication(User user) {
         try {
             FXMLLoader loader = new FXMLLoader(Main.class.getResource("/de/hitec/nhplus/main/MainWindowView.fxml"));
             TabPane pane = loader.load();
@@ -48,6 +76,10 @@ public class Main extends Application {
             this.primaryStage.setTitle("NHPlus");
             this.primaryStage.setScene(scene);
             this.primaryStage.setResizable(true);
+
+            MainWindowController controller = loader.getController();
+            controller.initialize(user);
+
             this.primaryStage.show();
 
             this.primaryStage.setOnCloseRequest(event -> {

src/main/java/de/hitec/nhplus/datastorage/DaoFactory.java

@@ -1,5 +1,6 @@
 package de.hitec.nhplus.datastorage;
 
+import de.hitec.nhplus.login.database.UserDao;
 import de.hitec.nhplus.medication.database.MedicationDao;
 import de.hitec.nhplus.nurse.database.NurseDao;
 import de.hitec.nhplus.patient.database.PatientDao;
@@ -63,4 +64,12 @@ public class DaoFactory {
     public MedicationDao createMedicationDAO() {
         return new MedicationDao(ConnectionBuilder.getConnection());
     }
+
+    /**
+     * @return A new {@link UserDao} instance with a database connection.
+     * @see de.hitec.nhplus.login.User User
+     */
+    public UserDao createUserDAO() {
+        return new UserDao(ConnectionBuilder.getConnection());
+    }
 }

src/main/java/de/hitec/nhplus/fixtures/Fixtures.java

@@ -46,6 +46,11 @@ public class Fixtures {
             medicationFixture.setupTable(connection);
             medicationFixture.load();
 
+            UserFixture userFixture = new UserFixture(nursesByName);
+            userFixture.dropTable(connection);
+            userFixture.setupTable(connection);
+            userFixture.load();
+
         } catch (Exception exception) {
             System.out.println(exception.getMessage());
         }

src/main/java/de/hitec/nhplus/fixtures/NurseFixture.java

@@ -54,6 +54,12 @@ public class NurseFixture implements Fixture<Nurse> {
                 true
         ));
 
+        nurses.add(new Nurse(
+                "Maria",
+                "Höller",
+                "666"
+        ));
+
         NurseDao dao = DaoFactory.getInstance().createNurseDAO();
         for (Nurse nurse : nurses) {
             dao.create(nurse);

src/main/java/de/hitec/nhplus/fixtures/TreatmentFixture.java

@@ -58,7 +58,6 @@ public class TreatmentFixture implements Fixture<Treatment> {
         Nurse armin = nursesByName.get("Armin");
 
         treatments.add(new Treatment(
-                1,
                 seppl,
                 ole,
                 convertStringToLocalDate("2023-06-03"),
@@ -70,7 +69,6 @@ public class TreatmentFixture implements Fixture<Treatment> {
                         + "Patient beruhigt sich erst, als alle Wertsachen im Zimmer gefunden worden sind."
         ));
         treatments.add(new Treatment(
-                2,
                 seppl,
                 armin,
                 convertStringToLocalDate("2023-06-05"),
@@ -82,7 +80,6 @@ public class TreatmentFixture implements Fixture<Treatment> {
                         + "Patient wird in seinen Raum zurückbegleitet und erhält Beruhigungsmittel."
         ));
         treatments.add(new Treatment(
-                3,
                 martina,
                 ole,
                 convertStringToLocalDate("2023-06-04"),
@@ -92,80 +89,80 @@ public class TreatmentFixture implements Fixture<Treatment> {
                 "Patient mit Waschlappen gewaschen und frisch angezogen. Patient gewendet."
         ));
         treatments.add(new Treatment(
-                4,
                 seppl,
                 armin,
                 convertStringToLocalDate("2023-06-06"),
                 convertStringToLocalTime("15:10"),
                 convertStringToLocalTime("16:00"),
                 "Spaziergang",
-                "Spaziergang im Park, Patient döst  im Rollstuhl ein")
-        );
+                "Spaziergang im Park, Patient döst  im Rollstuhl ein"
+
+        ));
         treatments.add(new Treatment(
-                8,
                 seppl,
                 ole,
                 convertStringToLocalDate("2023-06-08"),
                 convertStringToLocalTime("15:00"),
                 convertStringToLocalTime("16:00"),
                 "Spaziergang",
-                "Parkspaziergang; Patient ist heute lebhafter und hat klare Momente; erzählt von seiner Tochter")
-        );
+                "Parkspaziergang; Patient ist heute lebhafter und hat klare Momente; erzählt von seiner Tochter"
+        ));
         treatments.add(new Treatment(
-                9,
                 martina,
                 armin,
                 convertStringToLocalDate("2023-06-07"),
                 convertStringToLocalTime("11:00"),
                 convertStringToLocalTime("11:30"),
                 "Waschen",
-                "Waschen per Dusche auf einem Stuhl; Patientin gewendet;")
-        );
+                "Waschen per Dusche auf einem Stuhl; Patientin gewendet;"
+        ));
         treatments.add(new Treatment(
-                12,
                 hans,
                 armin,
                 convertStringToLocalDate("2023-06-08"),
                 convertStringToLocalTime("15:00"),
                 convertStringToLocalTime("15:30"),
                 "Physiotherapie",
-                "Übungen zur Stabilisation und Mobilisierung der Rückenmuskulatur")
-        );
+                "Übungen zur Stabilisation und Mobilisierung der Rückenmuskulatur"
+        ));
         treatments.add(new Treatment(
-                14,
                 ahmet,
                 ole,
                 convertStringToLocalDate("2023-08-24"),
                 convertStringToLocalTime("09:30"),
                 convertStringToLocalTime("10:15"),
                 "KG",
-                "Lympfdrainage"));
+                "Lympfdrainage"
+        ));
         treatments.add(new Treatment(
-                16,
                 elisabeth,
                 armin,
                 convertStringToLocalDate("2023-08-31"),
                 convertStringToLocalTime("13:30"),
                 convertStringToLocalTime("13:45"),
                 "Toilettengang",
-                "Hilfe beim Toilettengang; Patientin klagt über Schmerzen beim Stuhlgang. Gabe von Iberogast")
-        );
-        treatments.add(new Treatment(
-                17,
+                "Hilfe beim Toilettengang; Patientin klagt über Schmerzen beim Stuhlgang. Gabe von Iberogast"
+        ));
+        Treatment lockedTreatment = new Treatment(
                 elisabeth,
                 ole,
                 convertStringToLocalDate("2023-09-01"),
                 convertStringToLocalTime("16:00"),
                 convertStringToLocalTime("17:00"),
                 "KG",
-                "Massage der Extremitäten zur Verbesserung der Durchblutung")
+                "Massage der Extremitäten zur Verbesserung der Durchblutung"
         );
+        lockedTreatment.setLocked(true);
+        treatments.add(lockedTreatment);
 
         TreatmentDao dao = DaoFactory.getInstance().createTreatmentDao();
         Map<String, Treatment> treatmentsById = new HashMap<>();
         for (Treatment treatment : treatments) {
             dao.create(treatment);
+        }
+        for (Treatment treatment : dao.readAll()) {
             treatmentsById.put(String.valueOf(treatment.getId()), treatment);
+
         }
         return treatmentsById;
     }

src/main/java/de/hitec/nhplus/fixtures/UserFixture.java

@@ -0,0 +1,103 @@
+package de.hitec.nhplus.fixtures;
+
+import de.hitec.nhplus.Main;
+import de.hitec.nhplus.datastorage.DaoFactory;
+import de.hitec.nhplus.login.Permissions;
+import de.hitec.nhplus.login.User;
+import de.hitec.nhplus.login.database.UserDao;
+import de.hitec.nhplus.nurse.Nurse;
+
+import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
+import java.sql.Connection;
+import java.sql.SQLException;
+import java.util.*;
+
+public class UserFixture implements Fixture<User>{
+    private static final String SCHEMA = "/de/hitec/nhplus/login/database/User.sql";
+    private static final String PERMISSION_SCHEMA = "/de/hitec/nhplus/login/database/UserPermission.sql";
+    private static final String TO_NURSE_SCHEMA = "/de/hitec/nhplus/login/database/UserToNurse.sql";
+
+    private final Map<String, Nurse> nursesByName;
+
+    public UserFixture(Map<String, Nurse> nursesByName) {
+        this.nursesByName = nursesByName;
+    }
+
+    @Override
+    public void dropTable(Connection connection) throws SQLException {
+        connection.createStatement().execute("DROP TABLE IF EXISTS user");
+        connection.createStatement().execute("DROP TABLE IF EXISTS user__permissions");
+        connection.createStatement().execute("DROP TABLE IF EXISTS user__nurse");
+    }
+
+    @Override
+    public void setupTable(Connection connection) throws SQLException {
+        final InputStream schema = Main.class.getResourceAsStream(SCHEMA);
+        final InputStream permissionSchema = Main.class.getResourceAsStream(PERMISSION_SCHEMA);
+        final InputStream toNurseSchema = Main.class.getResourceAsStream(TO_NURSE_SCHEMA);
+
+        assert schema != null;
+        assert permissionSchema != null;
+        assert toNurseSchema != null;
+
+        String SQL = new Scanner(schema, StandardCharsets.UTF_8)
+                .useDelimiter("\\A")
+                .next();
+        String permissionSQL = new Scanner(permissionSchema, StandardCharsets.UTF_8)
+                .useDelimiter("\\A")
+                .next();
+        String toNurseSQL = new Scanner(toNurseSchema, StandardCharsets.UTF_8)
+                .useDelimiter("\\A")
+                .next();
+
+        connection.createStatement().execute(SQL);
+        connection.createStatement().execute(permissionSQL);
+        connection.createStatement().execute(toNurseSQL);
+    }
+
+    @Override
+    public Map<String, User> load() throws SQLException {
+        List<User> users = new ArrayList<>();
+
+        User udo = new User(
+                "udo",
+                Permissions.OWNER,
+                null
+        );
+        udo.setPassword("uD0_187!");
+        users.add(udo);
+
+        User maria = new User(
+                "maria",
+                Permissions.NURSE,
+                nursesByName.get("Maria")
+        );
+        maria.setPassword("H!mm3lf4hrt");
+        users.add(maria);
+
+        User werner = new User(
+                "werner",
+                Permissions.MANAGEMENT,
+                null
+        );
+        werner.setPassword("TurboSchraube42!");
+        users.add(werner);
+
+        User fullPermissionsTestUser = new User(
+                "test",
+                -1,
+                null
+        );
+        fullPermissionsTestUser.setPassword("");
+        users.add(fullPermissionsTestUser);
+
+        UserDao dao = DaoFactory.getInstance().createUserDAO();
+        Map<String, User> usersByUsername = new HashMap<>();
+        for (User user : users){
+            dao.create(user);
+            usersByUsername.put(user.getUsername(), user);
+        }
+        return usersByUsername;
+    }
+}

src/main/java/de/hitec/nhplus/login/LoginController.java

@@ -0,0 +1,92 @@
+package de.hitec.nhplus.login;
+
+import de.hitec.nhplus.datastorage.DaoFactory;
+import de.hitec.nhplus.login.database.UserDao;
+import javafx.animation.PauseTransition;
+import javafx.animation.TranslateTransition;
+import javafx.fxml.FXML;
+import javafx.scene.control.Button;
+import javafx.scene.control.PasswordField;
+import javafx.scene.control.TextField;
+import javafx.stage.Stage;
+import javafx.util.Duration;
+
+import java.nio.charset.StandardCharsets;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.sql.SQLException;
+import java.util.Arrays;
+
+public class LoginController {
+
+    public User user;
+    @FXML
+    public TextField textFieldUsername;
+    @FXML
+    public PasswordField passwordField;
+    @FXML
+    public Button buttonSubmit;
+    private Stage stage;
+    private int loginTries = 0;
+
+
+    public void initialize(Stage stage) {
+        this.stage = stage;
+    }
+
+    private void handleWrongPasswordOrUsername() {
+        loginTries++;
+
+        // Shake
+        TranslateTransition ttUsername = new TranslateTransition(Duration.millis(50), textFieldUsername);
+        ttUsername.setByX(10);
+        ttUsername.setAutoReverse(true);
+        ttUsername.setCycleCount(6);
+
+        TranslateTransition ttPassword = new TranslateTransition(Duration.millis(50), passwordField);
+        ttPassword.setByX(10);
+        ttPassword.setAutoReverse(true);
+        ttPassword.setCycleCount(6);
+
+        ttUsername.play();
+        ttPassword.play();
+
+        // Timout
+        PauseTransition pause = new PauseTransition(Duration.seconds(3));
+        pause.setOnFinished(event -> {
+            if (loginTries == 3) {
+                stage.close();
+            }
+            buttonSubmit.setDisable(false);
+        });
+        pause.play();
+
+    }
+
+    @FXML
+    public void handleSubmit() {
+        buttonSubmit.setDisable(true);
+
+        UserDao dao = DaoFactory.getInstance().createUserDAO();
+        try {
+            int id = dao.readUserId(textFieldUsername.getText());
+            if (id == 0) {
+                handleWrongPasswordOrUsername();
+                return;
+            }
+            byte[] salt = dao.readPasswordSalt(id);
+            MessageDigest md = MessageDigest.getInstance("SHA-512");
+            md.update(salt);
+            byte[] hash = md.digest(passwordField.getText().getBytes(StandardCharsets.UTF_8));
+            byte[] requiredHash = dao.readPasswordHash(id);
+            if (!Arrays.equals(hash, requiredHash)) {
+                handleWrongPasswordOrUsername();
+                return;
+            }
+            user = dao.read(id);
+            stage.close();
+        } catch (SQLException | NoSuchAlgorithmException exception) {
+            exception.printStackTrace();
+        }
+    }
+}

src/main/java/de/hitec/nhplus/login/Permissions.java

@@ -0,0 +1,8 @@
+package de.hitec.nhplus.login;
+
+public class Permissions {
+    public final static int EVERYBODY = 0b0;
+    public final static int NURSE = 0b1;
+    public final static int MANAGEMENT = 0b10;
+    public final static int OWNER = 0b100;
+}

src/main/java/de/hitec/nhplus/login/User.java

@@ -0,0 +1,101 @@
+package de.hitec.nhplus.login;
+
+import de.hitec.nhplus.nurse.Nurse;
+
+import java.nio.charset.StandardCharsets;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.security.SecureRandom;
+
+public class User {
+
+
+    private int id;
+    private String username;
+    private byte[] passwordSalt;
+    private byte[] passwordHash;
+    private int permissions = 0;
+    private Nurse nurse;
+
+    public User(
+            int id,
+            String username,
+            byte[] passwordSalt,
+            byte[] passwordHash,
+            int permissions,
+            Nurse nurse
+    ) {
+        this.id = id;
+        this.username = username;
+        this.passwordSalt = passwordSalt;
+        this.passwordHash = passwordHash;
+        this.permissions = permissions;
+        this.nurse = nurse;
+    }
+
+    public User(
+            String username,
+            int permissions,
+            Nurse nurse
+    ) {
+        this.username = username;
+        this.permissions = permissions;
+        this.nurse = nurse;
+    }
+    public void setPassword(String password) {
+        try {
+            SecureRandom random = new SecureRandom();
+            byte[] salt = new byte[32];
+            random.nextBytes(salt);
+            this.passwordSalt = salt;
+            MessageDigest md = MessageDigest.getInstance("SHA-512");
+            md.update(salt);
+            this.passwordHash = md.digest(password.getBytes(StandardCharsets.UTF_8));
+        }catch (NoSuchAlgorithmException exception){
+            exception.printStackTrace();
+        }
+    }
+
+    public boolean hasNursePermissions(){
+        return (permissions & Permissions.NURSE) != 0;
+    }
+    public boolean hasAdminPermissions(){
+        return (permissions & Permissions.MANAGEMENT) != 0;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public byte[] getPasswordSalt() {
+        return passwordSalt;
+    }
+
+    public byte[] getPasswordHash() {
+        return passwordHash;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public int getPermissions() {
+        return permissions;
+    }
+
+    public void setPermissions(int permissions) {
+        this.permissions = permissions;
+    }
+
+    public Nurse getNurse() {
+        return nurse;
+    }
+
+    public void setNurse(Nurse nurse) {
+        this.nurse = nurse;
+    }
+}

src/main/java/de/hitec/nhplus/login/database/UserDao.java

@@ -0,0 +1,211 @@
+package de.hitec.nhplus.login.database;
+
+import de.hitec.nhplus.datastorage.Dao;
+import de.hitec.nhplus.datastorage.DaoFactory;
+import de.hitec.nhplus.login.User;
+import de.hitec.nhplus.nurse.Nurse;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.List;
+
+public class UserDao implements Dao<User> {
+    protected final Connection connection;
+
+    public UserDao(Connection connection) {
+        this.connection = connection;
+    }
+
+    public int readUserId(String username) throws SQLException {
+        final String SQL = "SELECT id FROM user WHERE username = ?";
+        PreparedStatement statement = this.connection.prepareStatement(SQL);
+        statement.setString(1, username);
+        return statement.executeQuery().getInt(1);
+    }
+
+    public byte[] readPasswordSalt(int id) throws SQLException {
+        final String SQL = "SELECT passwordSalt FROM user WHERE id = ?";
+        PreparedStatement statement = this.connection.prepareStatement(SQL);
+        statement.setInt(1, id);
+        return statement.executeQuery().getBytes(1);
+    }
+
+    public byte[] readPasswordHash(int id) throws SQLException {
+        final String SQL = "SELECT passwordHash FROM user WHERE id = ?";
+        PreparedStatement statement = this.connection.prepareStatement(SQL);
+        statement.setInt(1, id);
+        return statement.executeQuery().getBytes(1);
+    }
+
+    @Override
+    public User read(int id) throws SQLException {
+        final String SQL = """
+                        SELECT
+                        user.username,
+                        user.passwordSalt,
+                        user.passwordHash,
+                        user__permissions.permissions,
+                        user__nurse.nurseId
+                        FROM user
+                        LEFT JOIN user__permissions ON user.id = user__permissions.userId
+                        LEFT JOIN user__nurse ON user.id = user__nurse.userId
+                        WHERE user.id = ?;
+                """;
+        PreparedStatement statement = this.connection.prepareStatement(SQL);
+        statement.setInt(1, id);
+        ResultSet result = statement.executeQuery();
+        int nurseId = result.getInt(5);
+        Nurse nurse = null;
+        if (!result.wasNull()) {
+            nurse = DaoFactory.getInstance().createNurseDAO().read(nurseId);
+        }
+        return new User(
+                id,
+                result.getString(1),
+                result.getBytes(2),
+                result.getBytes(3),
+                result.getInt(4),
+                nurse
+        );
+    }
+
+    @Override
+    public void create(User user) throws SQLException {
+        connection.setAutoCommit(false); //Switch to Manual Commit, to do an SQL Transaction
+        final String userSQL = """
+                    INSERT INTO user
+                    (username, passwordSalt, passwordHash)
+                    VALUES (?, ?, ?);
+                """;
+        PreparedStatement statement = this.connection.prepareStatement(userSQL);
+        statement.setString(1, user.getUsername());
+        statement.setBytes(2, user.getPasswordSalt());
+        statement.setBytes(3, user.getPasswordHash());
+        statement.execute();
+
+        ResultSet generatedKeys = connection.createStatement().executeQuery("SELECT last_insert_rowid()");
+        connection.commit(); //Finish SQL Transaction
+        connection.setAutoCommit(true); //Switch back Mode
+
+        if (!generatedKeys.next()) {
+            return;
+        }
+        int newId = generatedKeys.getInt(1);
+
+        final String permissionSQL = """
+                    INSERT INTO user__permissions
+                    (userId, permissions)
+                    VALUES (?, ?);
+                """;
+        PreparedStatement permissionStatement = this.connection.prepareStatement(permissionSQL);
+        permissionStatement.setInt(1, newId);
+        permissionStatement.setInt(2, user.getPermissions());
+        permissionStatement.execute();
+
+        if (user.getNurse() == null) {
+            return;
+        }
+        final String nurseSQL = """
+                    INSERT INTO user__nurse
+                    (userId, nurseId)
+                    VALUES (?, ?);
+                """;
+        PreparedStatement nurseStatement = this.connection.prepareStatement(nurseSQL);
+        nurseStatement.setInt(1, newId);
+        nurseStatement.setInt(2, user.getNurse().getId());
+        nurseStatement.execute();
+    }
+
+    @Override
+    public void update(User user) throws SQLException {
+        final String userSQL = """
+                    UPDATE user SET
+                    username = ?,
+                    passwordSalt = ?,
+                    passwordHash = ?
+                    WHERE id = ?
+                """;
+        PreparedStatement statement = this.connection.prepareStatement(userSQL);
+        statement.setString(1, user.getUsername());
+        statement.setBytes(2, user.getPasswordSalt());
+        statement.setBytes(3, user.getPasswordHash());
+        statement.setInt(3, user.getId());
+        statement.executeUpdate();
+
+        final String permissionSQL = """
+                    UPDATE user__permissions SET
+                    permissions = ?
+                    WHERE userId = ?
+                """;
+        PreparedStatement permissionStatement = this.connection.prepareStatement(permissionSQL);
+        permissionStatement.setInt(1, user.getPermissions());
+        permissionStatement.setInt(2, user.getId());
+        permissionStatement.executeUpdate();
+
+        if (user.getNurse() == null) {
+            final String nurseSQL = """
+                        DELETE FROM user__nurse WHERE userId = ?
+                    """;
+            this.connection.prepareStatement(nurseSQL).executeUpdate();
+            return;
+        }
+
+        final String nurseSQL = """
+                    UPDATE user__nurse set
+                    nurseId = ?
+                    WHERE userId = ?
+                """;
+        PreparedStatement nurseStatement = this.connection.prepareStatement(nurseSQL);
+        nurseStatement.setInt(1, user.getNurse().getId());
+        nurseStatement.setInt(2, user.getId());
+        permissionStatement.executeUpdate();
+    }
+
+    @Override
+    public void delete(int id) throws SQLException {
+        final String SQL = """
+                    DELETE FROM user WHERE user.id = ?;
+                """;
+        PreparedStatement preparedStatement = this.connection.prepareStatement(SQL);
+        preparedStatement.setInt(1, id);
+        preparedStatement.executeUpdate();
+    }
+
+    @Override
+    public List<User> readAll() throws SQLException {
+        final String SQL = """
+                        SELECT
+                        user.id,
+                        user.username,
+                        user.passwordSalt,
+                        user.passwordHash,
+                        user__permissions.permissions,
+                        user__nurse.nurseId
+                        FROM user
+                        LEFT JOIN user__permissions ON user.id = user__permissions.userId
+                        LEFT JOIN user__nurse ON user.id = user__nurse.userId
+                """;
+        ResultSet result = connection.prepareStatement(SQL).executeQuery();
+
+        List<User> users = new ArrayList<>();
+        while (result.next()) {
+            int nurseId = result.getInt(6);
+            Nurse nurse = null;
+            if (!result.wasNull()) {
+                nurse = DaoFactory.getInstance().createNurseDAO().read(nurseId);
+            }
+            users.add(new User(
+                    result.getInt(1),
+                    result.getString(2),
+                    result.getBytes(3),
+                    result.getBytes(4),
+                    result.getInt(5),
+                    nurse
+            ));
+        }
+        return users;
+    }
+}

src/main/java/de/hitec/nhplus/main/MainWindowController.java

@@ -1,17 +1,15 @@
 package de.hitec.nhplus.main;
 
-import de.hitec.nhplus.Main;
-import de.hitec.nhplus.nurse.Nurse;
+import de.hitec.nhplus.login.Permissions;
+import de.hitec.nhplus.login.User;
+import de.hitec.nhplus.utils.tab.TabManager;
+import de.hitec.nhplus.utils.tab.TabStruct;
+import javafx.event.Event;
 import javafx.fxml.FXML;
-import javafx.fxml.FXMLLoader;
-import javafx.scene.control.SelectionModel;
 import javafx.scene.control.Tab;
 import javafx.scene.control.TabPane;
-import javafx.scene.layout.AnchorPane;
-import javafx.scene.layout.BorderPane;
 
-import java.io.IOException;
-import java.util.Objects;
+import java.util.List;
 
 /**
  * Controller for the main window of the application, which holds all tabs.
@@ -23,153 +21,65 @@ import java.util.Objects;
  */
 public class MainWindowController {
     @FXML
-    private TabPane mainTabPane;
-    @FXML
-    private AnchorPane patientPage;
-    @FXML
-    private Tab patientTab;
-    @FXML
-    private AnchorPane treatmentPage;
-    @FXML
-    private Tab treatmentTab;
-    @FXML
-    private Tab nurseTab;
-    @FXML
-    private TabPane nurseTabPane;
-    @FXML
-    private AnchorPane activeNursePage;
-    @FXML
-    private Tab activeNurseTab;
-    @FXML
-    private AnchorPane lockedNursePage;
-    @FXML
-    private Tab lockedNurseTab;
-    @FXML
-    private AnchorPane medicationPage;
-    @FXML
-    private Tab medicationTab;
+    public TabPane mainTabPane;
+
+    private User user;
+    private TabManager tabManager;
 
     /**
-     * Initialization method that is called after the binding of all the fields.
+     * JavaFX Initialization method that is called after the binding of all the fields.
+     *
+     * @param user The logged in {@link User}.
      */
     @FXML
-    public void initialize() {
-        loadPatientPage();
-        mainTabPane.getSelectionModel().select(patientTab);
-
-        patientTab.setOnSelectionChanged(event -> loadPatientPage());
-        treatmentTab.setOnSelectionChanged(event -> loadTreatmentsPage());
-        nurseTab.setOnSelectionChanged(event -> loadNursePage());
-        medicationTab.setOnSelectionChanged(event -> loadMedicationPage());
-
-
-        nurseTabPane.getSelectionModel().select(activeNurseTab);
-
-        activeNurseTab.setOnSelectionChanged(event -> loadActiveNursePage());
-        lockedNurseTab.setOnSelectionChanged(event -> loadLockedNursePage());
+    public void initialize(User user) {
+        this.user = user;
+        this.tabManager = new TabManager(user);
+        setupTabs();
     }
 
     /**
-     * Loads the patient page into its tab.
+     * Sets up all Tabs Accessible, with help of the {@link TabManager}.
      */
-    private void loadPatientPage() {
-        try {
-            BorderPane patientsPane = FXMLLoader.load(
-                    Objects.requireNonNull(Main.class.getResource("/de/hitec/nhplus/patient/AllPatientView.fxml"))
-            );
-            patientPage.getChildren().setAll(patientsPane);
-            AnchorPane.setTopAnchor(patientsPane, 0d);
-            AnchorPane.setBottomAnchor(patientsPane, 0d);
-            AnchorPane.setLeftAnchor(patientsPane, 0d);
-            AnchorPane.setRightAnchor(patientsPane, 0d);
-        } catch (IOException exception) {
-            exception.printStackTrace();
-        }
-    }
+    private void setupTabs() {
+        tabManager.setupTab(mainTabPane, new TabStruct(
+                "Patienten",
+                "/de/hitec/nhplus/patient/AllPatientView.fxml",
+                Permissions.NURSE
+        ));
+        tabManager.setupSubTabPane(mainTabPane, "Behandlungen", Permissions.NURSE, List.of(
+                new TabStruct(
+                        "Behandlungen",
+                        "/de/hitec/nhplus/treatment/AllTreatmentView.fxml",
+                        Permissions.NURSE
+                ),
+                new TabStruct(
+                        "Gesperrte Behandlungen",
+                        "/de/hitec/nhplus/treatment/LockedTreatmentView.fxml",
+                        Permissions.NURSE
+                )
+        ));
+        tabManager.setupSubTabPane(mainTabPane, "Pfleger", Permissions.EVERYBODY, List.of(
+                new TabStruct(
+                        "Pfleger",
+                        "/de/hitec/nhplus/nurse/AllNurseView.fxml",
+                        Permissions.NURSE | Permissions.MANAGEMENT
+                ),
+                new TabStruct(
+                        "Gesperrte Pfleger",
+                        "/de/hitec/nhplus/nurse/LockedNurseView.fxml",
+                        Permissions.MANAGEMENT | Permissions.OWNER
+                )
+        ));
+        tabManager.setupTab(mainTabPane, new TabStruct(
+                "Medikamente",
+                "/de/hitec/nhplus/medication/AllMedicationView.fxml",
+                Permissions.MANAGEMENT
+        ));
 
-    /**
-     * Loads the {@link } page into its tab.
-     */
-    private void loadTreatmentsPage() {
-        try {
-            BorderPane treatmentsPane = FXMLLoader.load(
-                    Objects.requireNonNull(Main.class.getResource("/de/hitec/nhplus/treatment/AllTreatmentView.fxml"))
-            );
-            treatmentPage.getChildren().setAll(treatmentsPane);
-            AnchorPane.setTopAnchor(treatmentsPane, 0d);
-            AnchorPane.setBottomAnchor(treatmentsPane, 0d);
-            AnchorPane.setLeftAnchor(treatmentsPane, 0d);
-            AnchorPane.setRightAnchor(treatmentsPane, 0d);
-        } catch (IOException exception) {
-            exception.printStackTrace();
-        }
-    }
 
-    /**
-     * Loads the nurse page into its tab.
-     */
-    private void loadNursePage() {
-        SelectionModel<Tab> selectionModel = nurseTabPane.getSelectionModel();
-        Tab selectedTab = selectionModel.getSelectedItem();
-        if(selectedTab == activeNurseTab){
-            loadActiveNursePage();
-        }
-        if(selectedTab == lockedNurseTab){
-            loadLockedNursePage();
-        }
-    }
-
-    /**
-     * Loads the active {@link Nurse} page into its tab.
-     */
-    private void loadActiveNursePage() {
-        try {
-            BorderPane activeNursePane = FXMLLoader.load(
-                    Objects.requireNonNull(Main.class.getResource("/de/hitec/nhplus/nurse/AllNurseView.fxml"))
-            );
-            activeNursePage.getChildren().setAll(activeNursePane);
-            AnchorPane.setTopAnchor(activeNursePane, 0d);
-            AnchorPane.setBottomAnchor(activeNursePane, 0d);
-            AnchorPane.setLeftAnchor(activeNursePane, 0d);
-            AnchorPane.setRightAnchor(activeNursePane, 0d);
-        } catch (IOException exception) {
-            exception.printStackTrace();
-        }
-    }
-
-    /**
-     * Loads the locked {@link Nurse} page into its tab.
-     */
-    private void loadLockedNursePage() {
-        try {
-            BorderPane lockedNursePane = FXMLLoader.load(
-                    Objects.requireNonNull(Main.class.getResource("/de/hitec/nhplus/nurse/LockedNurseView.fxml"))
-            );
-            lockedNursePage.getChildren().setAll(lockedNursePane);
-            AnchorPane.setTopAnchor(lockedNursePane, 0d);
-            AnchorPane.setBottomAnchor(lockedNursePane, 0d);
-            AnchorPane.setLeftAnchor(lockedNursePane, 0d);
-            AnchorPane.setRightAnchor(lockedNursePane, 0d);
-        } catch (IOException exception) {
-            exception.printStackTrace();
-        }
-    }
-
-    /**
-     * Loads the medication page into its tab.
-     */
-    private void loadMedicationPage() {
-        try {
-            BorderPane medicationPane = FXMLLoader.load(
-                    Objects.requireNonNull(Main.class.getResource("/de/hitec/nhplus/medication/AllMedicationView.fxml"))
-            );
-            medicationPage.getChildren().setAll(medicationPane);
-            AnchorPane.setTopAnchor(medicationPane, 0d);
-            AnchorPane.setBottomAnchor(medicationPane, 0d);
-            AnchorPane.setLeftAnchor(medicationPane, 0d);
-            AnchorPane.setRightAnchor(medicationPane, 0d);
-        } catch (IOException exception) {
-            exception.printStackTrace();
-        }
+        Tab defaultTab = mainTabPane.getTabs().get(0);
+        mainTabPane.getSelectionModel().select(defaultTab);
+        defaultTab.getOnSelectionChanged().handle(new Event(Event.ANY));
     }
 }

src/main/java/de/hitec/nhplus/medication/IngredientListCell.java

@@ -40,7 +40,7 @@ public class IngredientListCell extends ListCell<Ingredient> {
                 BUTTON_PADDING_Y,
                 BUTTON_PADDING_X
         ));
-        deleteButton.setOnAction(event -> getListView().getItems().remove(this));
+        deleteButton.setOnAction(event -> getListView().getItems().remove(getItem()));
 
         // Calculate Delete Button Width
         Text textNode = new Text(deleteButton.getText());

src/main/java/de/hitec/nhplus/nurse/AllNurseController.java

@@ -22,6 +22,8 @@ import java.sql.SQLException;
  *
  * @author Dominik Säume
  * @author Ole Kück
+ * @author Armin Ribic
+ * @author Dorian Nemec
  */
 public class AllNurseController {
     @FXML
@@ -106,6 +108,17 @@ public class AllNurseController {
         this.textFieldPhoneNumber.clear();
     }
 
+    /**
+     * Internal method that stores the changes in the database.
+     */
+    private void doUpdate(TableColumn.CellEditEvent<Nurse, String> event) {
+        try {
+            this.dao.update(event.getRowValue());
+        } catch (SQLException exception) {
+            exception.printStackTrace();
+        }
+    }
+
     @FXML
     public void handleAdd(){
         String surname=this.textFieldSurName.getText();
@@ -137,4 +150,39 @@ public class AllNurseController {
         readAllAndShowInTableView();
     }
 
+    @FXML
+    public void handleOnEditSurname(TableColumn.CellEditEvent<Nurse, String> event) {
+        String newSurName = event.getNewValue();
+        if (!isValidSurName(newSurName)) {
+            showValidationError("Nachname");
+            event.getTableView().refresh();
+            return;
+        }
+        event.getRowValue().setSurName(newSurName);
+        this.doUpdate(event);
+    }
+
+    @FXML
+    public void handleOnEditFirstname(TableColumn.CellEditEvent<Nurse, String> event) {
+        String newFirstName = event.getNewValue();
+        if (!isValidFirstName(newFirstName)) {
+            showValidationError("Vorname");
+            event.getTableView().refresh();
+            return;
+        }
+        event.getRowValue().setFirstName(newFirstName);
+        this.doUpdate(event);
+    }
+
+    @FXML
+    public void handleOnEditPhoneNumber(TableColumn.CellEditEvent<Nurse, String> event) {
+        String newPhoneNumber = event.getNewValue();
+        if (!isValidPhoneNumber(newPhoneNumber)) {
+            showValidationError("Telefonnummer");
+            event.getTableView().refresh();
+            return;
+        }
+        event.getRowValue().setPhoneNumber(newPhoneNumber);
+        this.doUpdate(event);
+    }
 }

src/main/java/de/hitec/nhplus/nurse/LockedNurseController.java

@@ -113,6 +113,11 @@ public class LockedNurseController {
     @FXML
     public void handleMouseClick() {
         Nurse nurse = tableView.getSelectionModel().getSelectedItem();
+        if(nurse == null)
+        {
+            return;
+        }
+
         boolean canBeDeleted = nurse.calculateDeleteDate().isBefore(LocalDate.now());
         buttonDelete.setDisable(!canBeDeleted);
     }

src/main/java/de/hitec/nhplus/nurse/database/NurseDao.java

@@ -74,7 +74,7 @@ public class NurseDao extends DaoImp<Nurse> {
      * Read all database entries of active {@link Nurse}s into a {@link List} of model instances.
      */
     public List<Nurse> readAllActive() throws SQLException {
-        final String SQL = "SELECT * FROM nurse WHERE isLocked=false";
+        final String SQL = "SELECT * FROM nurse WHERE isLocked = false";
         return getListFromResultSet(this.connection.prepareStatement(SQL).executeQuery());
     }
 
@@ -82,7 +82,7 @@ public class NurseDao extends DaoImp<Nurse> {
      * Read all database entries of locked {@link Nurse}s into a {@link List} of model instances.
      */
     public List<Nurse> readAllLocked() throws SQLException {
-        final String SQL = "SELECT * FROM nurse WHERE isLocked=true";
+        final String SQL = "SELECT * FROM nurse WHERE isLocked = true";
         return getListFromResultSet(this.connection.prepareStatement(SQL).executeQuery());
     }
 

src/main/java/de/hitec/nhplus/patient/AllPatientController.java

@@ -154,7 +154,7 @@ public class AllPatientController {
     public void handleOnEditFirstname(TableColumn.CellEditEvent<Patient, String> event) {
         String newFirstName = event.getNewValue();
         if (!isValidFirstName(newFirstName)) {
-            showValidationError("First Name");
+            showValidationError("Vorname");
             event.getTableView().refresh();
             return;
         }
@@ -166,7 +166,7 @@ public class AllPatientController {
     public void handleOnEditSurname(TableColumn.CellEditEvent<Patient, String> event) {
         String newSurName = event.getNewValue();
         if (!isValidSurName(newSurName)) {
-            showValidationError("Sur Name");
+            showValidationError("Nachname");
             event.getTableView().refresh();
             return;
         }
@@ -178,7 +178,7 @@ public class AllPatientController {
     public void handleOnEditDateOfBirth(TableColumn.CellEditEvent<Patient, String> event) {
         String newDateString = event.getNewValue();
         if (!isValidDate(newDateString)) {
-            showValidationError("Date");
+            showValidationError("Geburtstag");
             event.getTableView().refresh();
             return;
         }
@@ -190,7 +190,7 @@ public class AllPatientController {
     public void handleOnEditCareLevel(TableColumn.CellEditEvent<Patient, String> event) {
         String newCareLevel = event.getNewValue();
         if (!isValidCareLevel(newCareLevel)) {
-            showValidationError("Care Level");
+            showValidationError("Pflegegrad");
             event.getTableView().refresh();
             return;
         }
@@ -202,7 +202,7 @@ public class AllPatientController {
     public void handleOnEditRoomNumber(TableColumn.CellEditEvent<Patient, String> event) {
         String newRoomNumber = event.getNewValue();
         if (!isValidRoomNumber(newRoomNumber)) {
-            showValidationError("Room Number");
+            showValidationError("Raum");
             event.getTableView().refresh();
             return;
         }

src/main/java/de/hitec/nhplus/treatment/AllTreatmentController.java

@@ -20,6 +20,7 @@ import javafx.stage.Stage;
 
 import java.io.IOException;
 import java.sql.SQLException;
+import java.time.LocalDate;
 import java.util.ArrayList;
 
 /**
@@ -27,6 +28,8 @@ import java.util.ArrayList;
  *
  * @author Bernd Heidemann
  * @author Dominik Säume
+ * @author Armin Ribic
+ * @author Dorian Nemec
  */
 public class AllTreatmentController {
 
@@ -61,7 +64,7 @@ public class AllTreatmentController {
     public ComboBox<String> comboBoxNurseSelection;
 
     @FXML
-    private Button buttonDelete;
+    private Button buttonLock;
 
     private final ObservableList<Treatment> treatments = FXCollections.observableArrayList();
     private TreatmentDao dao;
@@ -100,15 +103,16 @@ public class AllTreatmentController {
         this.columnDescription.setCellValueFactory(new PropertyValueFactory<>("description"));
         this.tableView.setItems(this.treatments);
 
-        this.buttonDelete.setDisable(true);
+        this.buttonLock.setDisable(true);
         this.tableView
                 .getSelectionModel()
                 .selectedItemProperty()
                 .addListener((observableValue, oldTreatment, newTreatment) ->
-                        AllTreatmentController.this.buttonDelete.setDisable(newTreatment == null)
+                        AllTreatmentController.this.buttonLock.setDisable(newTreatment == null)
                 );
 
         this.createComboBoxData();
+
     }
 
     /**
@@ -117,7 +121,7 @@ public class AllTreatmentController {
     public void readAllAndShowInTableView() {
         this.dao = DaoFactory.getInstance().createTreatmentDao();
         try {
-            this.treatments.setAll(dao.readAll());
+            this.treatments.setAll(dao.readAllActive());
         } catch (SQLException exception) {
             exception.printStackTrace();
         }
@@ -136,7 +140,7 @@ public class AllTreatmentController {
                 this.patientSelection.add(patient.getSurName());
             }
 
-            nurseList = (ArrayList<Nurse>) nurseDao.readAll();
+            nurseList = (ArrayList<Nurse>) nurseDao.readAllActive();
             for (Nurse nurse : nurseList) {
                 this.nurseSelection.add(nurse.getSurName());
             }
@@ -258,18 +262,6 @@ public class AllTreatmentController {
         }
     }
 
-    @FXML
-    public void handleDelete() {
-        int index = this.tableView.getSelectionModel().getSelectedIndex();
-        Treatment t = this.treatments.remove(index);
-        TreatmentDao dao = DaoFactory.getInstance().createTreatmentDao();
-        try {
-            dao.delete(t.getId());
-        } catch (SQLException exception) {
-            exception.printStackTrace();
-        }
-    }
-
     @FXML
     public void handleNewTreatment() {
         String selectedPatient = this.comboBoxPatientSelection.getSelectionModel().getSelectedItem();
@@ -316,4 +308,22 @@ public class AllTreatmentController {
         });
 
     }
+
+    @FXML
+    public void handleLock(){
+        Treatment selectedItem = this.tableView.getSelectionModel().getSelectedItem();
+        if (selectedItem == null){
+            return;
+        }
+
+        try {
+            selectedItem.setLocked(true);
+            this.dao.update(selectedItem);
+        }catch (SQLException exception){
+            exception.printStackTrace();
+        }
+        readAllAndShowInTableView();
+    }
+
+
 }

src/main/java/de/hitec/nhplus/treatment/LockedTreatmentController.java

@@ -0,0 +1,124 @@
+package de.hitec.nhplus.treatment;
+
+import de.hitec.nhplus.datastorage.DaoFactory;
+import de.hitec.nhplus.nurse.Nurse;
+import de.hitec.nhplus.patient.Patient;
+import de.hitec.nhplus.treatment.database.TreatmentDao;
+import de.hitec.nhplus.utils.DateConverter;
+import javafx.beans.property.SimpleStringProperty;
+import javafx.collections.FXCollections;
+import javafx.collections.ObservableList;
+import javafx.fxml.FXML;
+import javafx.scene.control.Button;
+import javafx.scene.control.TableColumn;
+import javafx.scene.control.TableView;
+import javafx.scene.control.cell.PropertyValueFactory;
+
+import java.sql.SQLException;
+import java.time.LocalDate;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Controller for all locked treatments.
+ *
+ * @author Armin Ribic
+ * @author Dorian Nemec
+ */
+public class LockedTreatmentController {
+
+    @FXML
+    public Button buttonUnlock;
+    @FXML
+    public TableView<Treatment> tableView;
+    @FXML
+    public TableColumn<Treatment, Long> columnId;
+    @FXML
+    private TableColumn<Treatment, String> columnPatient;
+    @FXML
+    private TableColumn<Treatment, String> columnNurse;
+    @FXML
+    private TableColumn<Treatment, String> columnDeleteDate;
+
+    private final ObservableList<Treatment> treatments = FXCollections.observableArrayList();
+    private TreatmentDao treatmentDao;
+
+    /**
+     * This method allows initializing a {@link LockedTreatmentController} object
+     * that is called after the binding of all the fields.
+     */
+    public void initialize() {
+        this.readAllAndShowInTableView();
+
+        this.columnId.setCellValueFactory(new PropertyValueFactory<>("id"));
+
+        this.columnPatient.setCellValueFactory(
+                cellData -> {
+                    Patient patient = cellData.getValue().getPatient();
+                    return new SimpleStringProperty(patient.getSurName() + ", " + patient.getFirstName());
+                }
+        );
+
+        this.columnNurse.setCellValueFactory(
+                cellData -> {
+                    Nurse nurse = cellData.getValue().getNurse();
+                    return new SimpleStringProperty(nurse.getSurName() + ", " + nurse.getFirstName());
+                }
+        );
+        this.columnDeleteDate.setCellValueFactory(cellData -> new SimpleStringProperty(
+                DateConverter.convertLocalDateToString(cellData.getValue().calculateDeleteDate())));
+
+
+        this.tableView.setItems(this.treatments);
+    }
+
+    /**
+     * Reads all locked {@link Treatment} data and shows it in the table.
+     */
+    private void readAllAndShowInTableView() {
+        this.treatments.clear();
+
+        this.treatmentDao = DaoFactory.getInstance().createTreatmentDao();
+        try {
+            this.treatments.addAll(this.treatmentDao.readAllLocked());
+            deleteOldTreatments();
+        } catch (SQLException exception) {
+            exception.printStackTrace();
+        }
+    }
+
+    /**
+     * Deletes all {@link Treatment}s which are older than allowed.
+     */
+    private void deleteOldTreatments() {
+        LocalDate today = LocalDate.now();
+
+        for (Treatment treatment : treatments) {
+            LocalDate deleteDate = treatment.calculateDeleteDate();
+            if (today.isEqual(deleteDate) || today.isAfter(deleteDate)) {
+                try {
+                    treatmentDao.delete(treatment.getId());
+                } catch (SQLException exception) {
+                    exception.printStackTrace();
+                }
+            }
+        }
+    }
+
+    @FXML
+    private void unlockTreatment() {
+        Treatment selectedItem = this.tableView.getSelectionModel().getSelectedItem();
+        if (selectedItem == null) {
+            return;
+        }
+
+        try {
+            selectedItem.setLocked(false);
+            this.treatmentDao.update(selectedItem);
+        } catch (SQLException exception) {
+            exception.printStackTrace();
+        }
+        readAllAndShowInTableView();
+    }
+
+}

src/main/java/de/hitec/nhplus/treatment/Treatment.java

@@ -3,6 +3,7 @@ package de.hitec.nhplus.treatment;
 import de.hitec.nhplus.nurse.Nurse;
 import de.hitec.nhplus.patient.Patient;
 import de.hitec.nhplus.utils.DateConverter;
+import javafx.beans.property.SimpleBooleanProperty;
 import javafx.beans.property.SimpleIntegerProperty;
 import javafx.beans.property.SimpleObjectProperty;
 import javafx.beans.property.SimpleStringProperty;
@@ -16,6 +17,8 @@ import java.util.StringJoiner;
  *
  * @author Bernd Heidemann
  * @author Dominik Säume
+ * @author Armin Ribic
+ * @author Dorian Nemec
  */
 public class Treatment {
     private SimpleIntegerProperty id;
@@ -26,6 +29,8 @@ public class Treatment {
     private final SimpleObjectProperty<LocalTime> end;
     private final SimpleStringProperty description;
     private final SimpleStringProperty remarks;
+    private final SimpleBooleanProperty locked;
+    private final static int BLOCKED_YEARS = 10;
 
     /**
      * This constructor allows instantiating a {@link Treatment} object,
@@ -50,6 +55,7 @@ public class Treatment {
         this.end = new SimpleObjectProperty<>(end);
         this.description = new SimpleStringProperty(description);
         this.remarks = new SimpleStringProperty(remarks);
+        this.locked = new SimpleBooleanProperty(false);
     }
 
     /**
@@ -63,7 +69,8 @@ public class Treatment {
             LocalTime begin,
             LocalTime end,
             String description,
-            String remarks
+            String remarks,
+            Boolean isLocked
     ) {
         this.id = new SimpleIntegerProperty(id);
         this.patient = new SimpleObjectProperty<>(patient);
@@ -73,6 +80,26 @@ public class Treatment {
         this.end = new SimpleObjectProperty<>(end);
         this.description = new SimpleStringProperty(description);
         this.remarks = new SimpleStringProperty(remarks);
+        this.locked = new SimpleBooleanProperty(isLocked);
+    }
+
+    /**
+     * Calculates delete date of treatment.
+     */
+    public LocalDate calculateDeleteDate() {
+        return DateConverter.convertStringToLocalDate(getDate()).plusYears(BLOCKED_YEARS);
+    }
+
+    public boolean isLocked() {
+        return locked.get();
+    }
+
+    public SimpleBooleanProperty lockedProperty() {
+        return locked;
+    }
+
+    public void setLocked(boolean locked) {
+        this.locked.set(locked);
     }
 
     public int getId() {
@@ -166,6 +193,8 @@ public class Treatment {
                 .add("End: " + this.getEnd())
                 .add("Description: " + this.getDescription())
                 .add("Remarks: " + this.getRemarks())
+                .add("isLocked: " + this.isLocked())
                 .toString();
     }
+
 }

src/main/java/de/hitec/nhplus/treatment/database/TreatmentDao.java

@@ -11,6 +11,7 @@ import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import java.sql.SQLException;
+import java.time.LocalDate;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -20,6 +21,8 @@ import java.util.List;
  *
  * @author Bernd Heidemannn
  * @author Dominik Säume
+ * @author Armin Ribic
+ * @author Dorian Nemec
  */
 public class TreatmentDao extends DaoImp<Treatment> {
 
@@ -27,60 +30,22 @@ public class TreatmentDao extends DaoImp<Treatment> {
         super(connection);
     }
 
-    @Override
-    protected PreparedStatement getCreateStatement(Treatment treatment) throws SQLException {
-        final String SQL = """
-                    INSERT INTO treatment
-                    (patientId, nurseId, date, begin, end, description, remark)
-                    VALUES (?, ?, ?, ?, ?, ?, ?)
-                """;
-        PreparedStatement statement = this.connection.prepareStatement(SQL);
-        statement.setInt(1, treatment.getPatient().getId());
-        statement.setInt(2, treatment.getNurse().getId());
-        statement.setString(3, treatment.getDate());
-        statement.setString(4, treatment.getBegin());
-        statement.setString(5, treatment.getEnd());
-        statement.setString(6, treatment.getDescription());
-        statement.setString(7, treatment.getRemarks());
-        return statement;
+    /**
+     * Read all database entries of active {@link Treatment}s into a {@link List} of model instances.
+     */
+    public List<Treatment> readAllActive() throws SQLException {
+        final String SQL = "SELECT * FROM treatment WHERE isLocked = false";
+        return getListFromResultSet(this.connection.prepareStatement(SQL).executeQuery());
     }
 
-    @Override
-    protected PreparedStatement getReadByIDStatement(int id) throws SQLException {
-        final String SQL = "SELECT * FROM treatment WHERE id = ?";
-        PreparedStatement statement = this.connection.prepareStatement(SQL);
-        statement.setInt(1, id);
-        return statement;
+    /**
+     * Read all database entries of locked {@link Treatment}s into a {@link Treatment} of model instances.
+     */
+    public List<Treatment> readAllLocked() throws SQLException {
+        final String SQL = "SELECT * FROM treatment WHERE isLocked = true";
+        return getListFromResultSet(this.connection.prepareStatement(SQL).executeQuery());
     }
 
-    @Override
-    protected Treatment getInstanceFromResultSet(ResultSet result) throws SQLException {
-        return new Treatment(
-                result.getInt(1),
-                DaoFactory.getInstance().createPatientDAO().read(result.getInt(2)),
-                DaoFactory.getInstance().createNurseDAO().read(result.getInt(3)),
-                DateConverter.convertStringToLocalDate(result.getString(4)),
-                DateConverter.convertStringToLocalTime(result.getString(5)),
-                DateConverter.convertStringToLocalTime(result.getString(6)),
-                result.getString(7),
-                result.getString(8)
-        );
-    }
-
-    @Override
-    protected PreparedStatement getReadAllStatement() throws SQLException {
-        final String SQL = "SELECT * FROM treatment";
-        return this.connection.prepareStatement(SQL);
-    }
-
-    @Override
-    protected List<Treatment> getListFromResultSet(ResultSet result) throws SQLException {
-        ArrayList<Treatment> list = new ArrayList<>();
-        while (result.next()) {
-            list.add(getInstanceFromResultSet(result));
-        }
-        return list;
-    }
 
     /**
      * Retrieves a list of {@link Treatment}s associated with a specific
@@ -112,6 +77,63 @@ public class TreatmentDao extends DaoImp<Treatment> {
         return getListFromResultSet(result);
     }
 
+    @Override
+    protected PreparedStatement getCreateStatement(Treatment treatment) throws SQLException {
+        final String SQL = """
+                    INSERT INTO treatment
+                    (patientId, nurseId, date, begin, end, description, remark, isLocked)
+                    VALUES (?, ?, ?, ?, ?, ?, ?, ?)
+                """;
+        PreparedStatement statement = this.connection.prepareStatement(SQL);
+        statement.setInt(1, treatment.getPatient().getId());
+        statement.setInt(2, treatment.getNurse().getId());
+        statement.setString(3, treatment.getDate());
+        statement.setString(4, treatment.getBegin());
+        statement.setString(5, treatment.getEnd());
+        statement.setString(6, treatment.getDescription());
+        statement.setString(7, treatment.getRemarks());
+        statement.setBoolean(8, treatment.isLocked());
+        return statement;
+    }
+
+    @Override
+    protected PreparedStatement getReadByIDStatement(int id) throws SQLException {
+        final String SQL = "SELECT * FROM treatment WHERE id = ?";
+        PreparedStatement statement = this.connection.prepareStatement(SQL);
+        statement.setInt(1, id);
+        return statement;
+    }
+
+    @Override
+    protected Treatment getInstanceFromResultSet(ResultSet result) throws SQLException {
+        return new Treatment(
+                result.getInt(1),
+                DaoFactory.getInstance().createPatientDAO().read(result.getInt(2)),
+                DaoFactory.getInstance().createNurseDAO().read(result.getInt(3)),
+                DateConverter.convertStringToLocalDate(result.getString(4)),
+                DateConverter.convertStringToLocalTime(result.getString(5)),
+                DateConverter.convertStringToLocalTime(result.getString(6)),
+                result.getString(7),
+                result.getString(8),
+                result.getBoolean(9)
+        );
+    }
+
+    @Override
+    protected PreparedStatement getReadAllStatement() throws SQLException {
+        final String SQL = "SELECT * FROM treatment";
+        return this.connection.prepareStatement(SQL);
+    }
+
+    @Override
+    protected List<Treatment> getListFromResultSet(ResultSet result) throws SQLException {
+        ArrayList<Treatment> list = new ArrayList<>();
+        while (result.next()) {
+            list.add(getInstanceFromResultSet(result));
+        }
+        return list;
+    }
+
     @Override
     protected PreparedStatement getUpdateStatement(Treatment treatment) throws SQLException {
         final String SQL = """
@@ -120,7 +142,8 @@ public class TreatmentDao extends DaoImp<Treatment> {
                    begin = ?,
                    end = ?,
                    description = ?,
-                   remark = ?
+                   remark = ?,
+                   isLocked = ?
                    WHERE id = ?
                 """;
         PreparedStatement statement = this.connection.prepareStatement(SQL);
@@ -129,7 +152,8 @@ public class TreatmentDao extends DaoImp<Treatment> {
         statement.setString(3, treatment.getEnd());
         statement.setString(4, treatment.getDescription());
         statement.setString(5, treatment.getRemarks());
-        statement.setInt(6, treatment.getId());
+        statement.setBoolean(6, treatment.isLocked());
+        statement.setInt(7, treatment.getId());
         return statement;
     }
 
@@ -141,4 +165,5 @@ public class TreatmentDao extends DaoImp<Treatment> {
         statement.setInt(1, id);
         return statement;
     }
+
 }

src/main/java/de/hitec/nhplus/utils/tab/TabManager.java

@@ -0,0 +1,82 @@
+package de.hitec.nhplus.utils.tab;
+
+import de.hitec.nhplus.Main;
+import de.hitec.nhplus.login.Permissions;
+import de.hitec.nhplus.login.User;
+import javafx.event.Event;
+import javafx.event.EventHandler;
+import javafx.fxml.FXMLLoader;
+import javafx.scene.control.Tab;
+import javafx.scene.control.TabPane;
+import javafx.scene.layout.AnchorPane;
+import javafx.scene.layout.BorderPane;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.Objects;
+
+public class TabManager {
+    private final User user;
+
+    public TabManager(User user) {
+        this.user = user;
+    }
+
+    private boolean hasPermissions(int requiredPermissions, int permissions) {
+        return requiredPermissions == Permissions.EVERYBODY
+               || (permissions & requiredPermissions) != 0;
+    }
+
+    public void setupTab(TabPane tabPane, TabStruct tabStruct) {
+        if (!hasPermissions(tabStruct.requiredPermissions, user.getPermissions())) {
+            return;
+        }
+        Tab tab = new Tab();
+        tab.setText(tabStruct.title);
+        AnchorPane pane = new AnchorPane();
+        tab.setContent(pane);
+        tab.setOnSelectionChanged(loadTabEventHandler(tabStruct, pane));
+        tabPane.getTabs().add(tab);
+    }
+
+    private EventHandler<Event> loadTabEventHandler(TabStruct tabStruct, AnchorPane pane) {
+        return event -> {
+            try {
+                BorderPane patientsPane = FXMLLoader.load(
+                        Objects.requireNonNull(Main.class.getResource(tabStruct.view))
+                );
+                pane.getChildren().setAll(patientsPane);
+                AnchorPane.setTopAnchor(patientsPane, 0d);
+                AnchorPane.setBottomAnchor(patientsPane, 0d);
+                AnchorPane.setLeftAnchor(patientsPane, 0d);
+                AnchorPane.setRightAnchor(patientsPane, 0d);
+            } catch (IOException exception) {
+                exception.printStackTrace();
+            }
+        };
+    }
+
+    public void setupSubTabPane(TabPane parentTabPane, String title, int requiredPermissions, List<TabStruct> subTabs) {
+        if (!hasPermissions(requiredPermissions, user.getPermissions())) {
+            return;
+        }
+        Tab tab = new Tab();
+        tab.setText(title);
+        TabPane subTabPane = new TabPane();
+        subTabPane.setTabClosingPolicy(TabPane.TabClosingPolicy.UNAVAILABLE);
+        tab.setContent(subTabPane);
+        subTabs.forEach(tabStruct -> setupTab(subTabPane, tabStruct));
+        if (subTabPane.getTabs().isEmpty()) {
+            return;
+        }
+        tab.setOnSelectionChanged(loadSubTabPaneEventHandler(subTabPane));
+        parentTabPane.getTabs().add(tab);
+    }
+
+    private EventHandler<Event> loadSubTabPaneEventHandler(TabPane tabPane) {
+        return event -> {
+            Tab tab = tabPane.getSelectionModel().getSelectedItem();
+            tab.getOnSelectionChanged().handle(new Event(Event.ANY));
+        };
+    }
+}

src/main/java/de/hitec/nhplus/utils/tab/TabStruct.java

@@ -0,0 +1,13 @@
+package de.hitec.nhplus.utils.tab;
+
+public class TabStruct {
+    public String title;
+    public String view;
+    public int requiredPermissions;
+
+    public TabStruct(String title, String view, int requiredPermissions) {
+        this.title = title;
+        this.view = view;
+        this.requiredPermissions = requiredPermissions;
+    }
+}

src/main/java/module-info.java

@@ -10,6 +10,9 @@ module de.hitec.nhplus {
     exports de.hitec.nhplus.main;
     opens de.hitec.nhplus.main to javafx.base, javafx.fxml;
 
+    exports de.hitec.nhplus.login;
+    opens de.hitec.nhplus.login to javafx.base, javafx.fxml;
+
     exports de.hitec.nhplus.patient;
     exports de.hitec.nhplus.patient.database;
     opens de.hitec.nhplus.patient.database to javafx.base, javafx.fxml;

src/main/resources/de/hitec/nhplus/login/LoginView.fxml

@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.geometry.Insets?>
+<?import javafx.scene.control.Button?>
+<?import javafx.scene.control.Label?>
+<?import javafx.scene.control.PasswordField?>
+<?import javafx.scene.control.TextField?>
+<?import javafx.scene.layout.*?>
+<BorderPane
+        xmlns="http://javafx.com/javafx/17.0.2-ea"
+        xmlns:fx="http://javafx.com/fxml/1"
+        fx:controller="de.hitec.nhplus.login.LoginController"
+        minWidth="240"
+        maxWidth="240"
+>
+    <padding>
+        <Insets bottom="8" left="8" right="8" top="8"/>
+    </padding>
+    <top>
+        <Label text="Anmeldung" BorderPane.alignment="CENTER"/>
+    </top>
+    <center>
+        <VBox spacing="8">
+            <BorderPane.margin>
+                <Insets bottom="8.0" top="8.0"/>
+            </BorderPane.margin>
+            <TextField
+                    fx:id="textFieldUsername"
+                    promptText="nutzername"
+                    VBox.vgrow="ALWAYS"
+            />
+            <PasswordField
+                    fx:id="passwordField"
+                    promptText="password"
+                    VBox.vgrow="ALWAYS"
+            />
+        </VBox>
+    </center>
+    <bottom>
+        <Button
+                fx:id="buttonSubmit"
+                text="Bestätigen"
+                BorderPane.alignment="CENTER"
+                onAction="#handleSubmit"
+        />
+    </bottom>
+</BorderPane>

src/main/resources/de/hitec/nhplus/login/database/User.sql

@@ -0,0 +1,7 @@
+CREATE TABLE user
+(
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    username TEXT NOT NULL UNIQUE,
+    passwordSalt BLOB NOT NULL,
+    passwordHash BLOB NOT NULL
+)

src/main/resources/de/hitec/nhplus/login/database/UserPermission.sql

@@ -0,0 +1,6 @@
+CREATE TABLE user__permissions
+(
+    userId  INTEGER NOT NULL UNIQUE,
+    permissions INTEGER NOT NULL, -- Binary Bitmask for Permissions
+    FOREIGN KEY (userId) REFERENCES user (id) ON DELETE CASCADE
+)

src/main/resources/de/hitec/nhplus/login/database/UserToNurse.sql

@@ -0,0 +1,7 @@
+CREATE TABLE user__nurse
+(
+    userId  INTEGER NOT NULL UNIQUE,
+    nurseId INTEGER NOT NULL UNIQUE,
+    FOREIGN KEY (userId) REFERENCES user (id) ON DELETE CASCADE,
+    FOREIGN KEY (nurseId) REFERENCES nurse (id) ON DELETE CASCADE
+)

src/main/resources/de/hitec/nhplus/main/MainWindowView.fxml

@@ -1,31 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
 <?import javafx.scene.control.*?>
-<?import javafx.scene.layout.AnchorPane?>
 <TabPane
         fx:id="mainTabPane"
         tabClosingPolicy="UNAVAILABLE"
         xmlns="http://javafx.com/javafx/17.0.2-ea"
         xmlns:fx="http://javafx.com/fxml/1"
         fx:controller="de.hitec.nhplus.main.MainWindowController"
->
-    <Tab fx:id="patientTab" text="Patienten">
-        <AnchorPane fx:id="patientPage"/>
-    </Tab>
-    <Tab fx:id="treatmentTab" text="Behandlungen">
-        <AnchorPane fx:id="treatmentPage"/>
-    </Tab>
-    <Tab fx:id="nurseTab" text="Pfleger">
-        <TabPane fx:id="nurseTabPane" tabClosingPolicy="UNAVAILABLE">
-            <Tab fx:id="activeNurseTab" text="Pfleger">
-                <AnchorPane fx:id="activeNursePage"/>
-            </Tab>
-            <Tab fx:id="lockedNurseTab" text="Gesperrte Pfleger">
-                <AnchorPane fx:id="lockedNursePage"/>
-            </Tab>
-        </TabPane>
-    </Tab>
-    <Tab fx:id="medicationTab" text="Medikamente">
-        <AnchorPane fx:id="medicationPage"/>
-    </Tab>
-</TabPane>
+/>

src/main/resources/de/hitec/nhplus/nurse/AllNurseView.fxml

@@ -22,16 +22,19 @@
                 <TableColumn
                         fx:id="columnSurName"
                         minWidth="140.0"
+                        onEditCommit="#handleOnEditSurname"
                         text="Nachname"
                 />
                 <TableColumn
                         fx:id="columnFirstName"
                         minWidth="140.0"
+                        onEditCommit="#handleOnEditFirstname"
                         text="Vorname"
                 />
                 <TableColumn
                         fx:id="columnPhoneNumber"
                         minWidth="140.0"
+                        onEditCommit="#handleOnEditPhoneNumber"
                         text="Telefonnummer"
                 />
             </columns>

src/main/resources/de/hitec/nhplus/nurse/LockedNurseView.fxml

@@ -12,7 +12,11 @@
         <Insets top="8" left="8" right="8" bottom="8"/>
     </padding>
     <center>
-        <TableView fx:id="tableView" layoutX="31.0" layoutY="40" onMouseClicked="#handleMouseClick" >
+        <TableView
+                fx:id="tableView"
+                layoutX="31.0"
+                layoutY="40"
+                onMouseClicked="#handleMouseClick" >
             <columns>
                 <TableColumn
                         fx:id="columnId"

src/main/resources/de/hitec/nhplus/treatment/AllTreatmentView.fxml

@@ -88,11 +88,11 @@
             </center>
             <right>
                 <Button
-                        fx:id="buttonDelete"
+                        fx:id="buttonLock"
                         mnemonicParsing="false"
-                        onAction="#handleDelete"
+                        onAction="#handleLock"
                         prefWidth="200.0"
-                        text="Löschen"
+                        text="Sperren"
                         GridPane.columnIndex="2"
                 />
             </right>

src/main/resources/de/hitec/nhplus/treatment/LockedTreatmentView.fxml

@@ -0,0 +1,77 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.geometry.*?>
+<?import javafx.scene.control.*?>
+<?import javafx.scene.layout.*?>
+
+<BorderPane prefHeight="400.0"
+            prefWidth="600.0"
+            xmlns="http://javafx.com/javafx/17.0.2-ea"
+            xmlns:fx="http://javafx.com/fxml/1"
+            fx:controller="de.hitec.nhplus.treatment.LockedTreatmentController">
+    <padding>
+        <Insets bottom="8" left="8" right="8" top="8" />
+    </padding>
+    <center>
+        <TableView
+                fx:id="tableView"
+                layoutX="31.0"
+                layoutY="40">
+            <columns>
+                <TableColumn
+                        fx:id="columnId"
+                        minWidth="40.0"
+                        prefWidth="102.0"
+                        text="ID"
+                />
+                <TableColumn
+                        fx:id="columnPatient"
+                        minWidth="40.0"
+                        prefWidth="102.0"
+                        text="Patient"
+                />
+                <TableColumn
+                        fx:id="columnNurse"
+                        minWidth="40.0"
+                        prefWidth="102.0"
+                        text="Pflegekraft"
+                />
+                <TableColumn
+                        fx:id="columnDeleteDate"
+                        minWidth="40.0"
+                        prefWidth="102.0"
+                        text="Löschung am"
+                />
+            </columns>
+            <columnResizePolicy>
+                <TableView fx:constant="CONSTRAINED_RESIZE_POLICY"/>
+            </columnResizePolicy>
+        </TableView>
+    </center>
+    <bottom>
+        <BorderPane>
+            <BorderPane.margin>
+                <Insets top="8.0"/>
+            </BorderPane.margin>
+            <center>
+                <HBox spacing="8.0">
+                    <padding>
+                        <Insets right="8.0"/>
+                    </padding>
+                </HBox>
+            </center>
+            <right>
+                <HBox>
+                    <spacing>8.0</spacing>
+                    <Button
+                            fx:id="buttonUnlock"
+                            mnemonicParsing="false"
+                            onAction="#unlockTreatment"
+                            prefWidth="90.0"
+                            text="Entsperren"
+                    />
+                </HBox>
+            </right>
+        </BorderPane>
+    </bottom>
+</BorderPane>

src/main/resources/de/hitec/nhplus/treatment/database/Treatment.sql

@@ -8,6 +8,7 @@ CREATE TABLE treatment
     end         TEXT    NOT NULL,
     description TEXT    NOT NULL,
     remark      TEXT    NOT NULL,
+    isLocked    BOOLEAN NOT NULL DEFAULT false,
     FOREIGN KEY (patientId) REFERENCES patient (id) ON DELETE CASCADE,
-    FOREIGN KEY (nurseId) REFERENCES nurse (id) ON DELETE SET NULL
+    FOREIGN KEY (nurseId) REFERENCES nurse (id) ON DELETE CASCADE
 )