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

@@ -67,7 +67,6 @@ public class MedicationFixture implements Fixture<Medication> {
         Ingredient warfarinnatrium = new Ingredient("Warfarinnatrium");
 
         medications.add(new Medication(
-                1,
                 "Metformin",
                 "AstraZeneca",
                 List.of(
@@ -81,7 +80,6 @@ public class MedicationFixture implements Fixture<Medication> {
                 100
         ));
         medications.add(new Medication(
-                2,
                 "Lisinopril",
                 "Teva Pharmaceuticals",
                 List.of(
@@ -95,7 +93,6 @@ public class MedicationFixture implements Fixture<Medication> {
                 150
         ));
         medications.add(new Medication(
-                3,
                 "Simvastatin",
                 "Mylan",
                 List.of(
@@ -109,7 +106,6 @@ public class MedicationFixture implements Fixture<Medication> {
                 80
         ));
         medications.add(new Medication(
-                4,
                 "Enoxaparin",
                 "Sanofi",
                 List.of(
@@ -122,7 +118,6 @@ public class MedicationFixture implements Fixture<Medication> {
                 120
         ));
         medications.add(new Medication(
-                5,
                 "Levothyroxin",
                 "Sandoz",
                 List.of(
@@ -136,7 +131,6 @@ public class MedicationFixture implements Fixture<Medication> {
                 90
         ));
         medications.add(new Medication(
-                6,
                 "Warfarin",
                 "Apotex Inc.",
                 List.of(

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

@@ -1,22 +1,30 @@
 package de.hitec.nhplus.medication;
 
+import java.io.IOException;
+import java.sql.SQLException;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import de.hitec.nhplus.Main;
 import de.hitec.nhplus.datastorage.DaoFactory;
 import de.hitec.nhplus.medication.database.MedicationDao;
 import javafx.beans.property.SimpleStringProperty;
 import javafx.collections.FXCollections;
 import javafx.collections.ObservableList;
 import javafx.fxml.FXML;
+import javafx.fxml.FXMLLoader;
+import javafx.scene.Scene;
 import javafx.scene.control.TableColumn;
 import javafx.scene.control.TableView;
 import javafx.scene.control.cell.PropertyValueFactory;
-
+import javafx.scene.layout.BorderPane;
-import java.sql.SQLException;
+import javafx.stage.Stage;
-import java.util.stream.Collectors;
 
 /**
  * The controller for viewing all {@link Medication}s.
  *
  * @author Dominik Säume
+ * @author Ole Kück
  */
 public class AllMedicationController {
     @FXML
@@ -50,14 +58,20 @@ public class AllMedicationController {
         this.columnName.setCellValueFactory(new PropertyValueFactory<>("name"));
         this.columnManufacturer.setCellValueFactory(new PropertyValueFactory<>("manufacturer"));
         this.columnIngredient.setCellValueFactory(
-                cellData -> new SimpleStringProperty(
+            cellData -> {
-                        cellData
+                Medication medication = cellData.getValue();
-                                .getValue()
+                List<Ingredient> ingredients = medication.getIngredients();
-                                .getIngredients()
+                if(ingredients.isEmpty()){
+                    return new SimpleStringProperty("");
+                }
+
+                return new SimpleStringProperty(
+                        ingredients
                         .stream()
                         .map(ingredient -> ingredient.getName())
                         .collect(Collectors.joining("\n"))
-                ));
+                );
+            });
         this.columnPossibleSideEffects.setCellValueFactory(new PropertyValueFactory<>("possibleSideEffects"));
         this.columnAdministrationMethod.setCellValueFactory(new PropertyValueFactory<>("administrationMethod"));
         this.columnCurrentStock.setCellValueFactory(new PropertyValueFactory<>("currentStock"));
@@ -76,4 +90,39 @@ public class AllMedicationController {
             exception.printStackTrace();
         }
     }
+
+    /**
+     * Method to create a new {@link Medication}.
+     */
+    public void createMedication(Medication medication) {
+        dao = DaoFactory.getInstance().createMedicationDAO();
+        try {
+            dao.create(medication);
+        } catch (SQLException exception) {
+            exception.printStackTrace();
+        }
+    }
+
+    @FXML
+    public void handleNewMedication() {
+        try {
+            FXMLLoader loader = new FXMLLoader(
+                Main.class.getResource("/de/hitec/nhplus/medication/MedicationModal.fxml")
+            );
+            BorderPane pane = loader.load();
+            Scene scene = new Scene(pane);
+            Stage stage = new Stage();
+
+            MedicationModalController controller = loader.getController();
+            controller.initialize(stage, this, null);
+
+            stage.setScene(scene);
+            stage.setTitle("NHPlus - Neues Medikament");
+            stage.setResizable(true);
+            stage.setAlwaysOnTop(true);
+            stage.showAndWait();
+        } catch (IOException exception) {
+            exception.printStackTrace();
+        }
+    }
 }

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

@@ -17,7 +17,7 @@ public class Ingredient {
     }
 
     public String getName() {
-        return name.get();
+        return name.getValue();
     }
 
     public SimpleStringProperty nameProperty() {

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

@@ -0,0 +1,104 @@
+package de.hitec.nhplus.medication;
+
+import javafx.beans.value.ObservableValue;
+import javafx.geometry.Insets;
+import javafx.scene.control.Button;
+import javafx.scene.control.ListCell;
+import javafx.scene.control.ListView;
+import javafx.scene.control.TextField;
+import javafx.scene.layout.BorderPane;
+import javafx.scene.text.Text;
+
+/**
+ * A custom implementation of the {@link ListCell} for {@link Ingredient}s.
+ * This implementation contains an automatic resizing of the parent {@link ListView}.
+ *
+ * @author Dominik Säume
+ */
+public class IngredientListCell extends ListCell<Ingredient> {
+    private final TextField textField;
+    private final Button deleteButton;
+
+    private static final double BUILTIN_BORDER_WIDTH = 1;
+    private static final double CELL_SPACING = 4;
+    private static final double CELL_PADDING = 4;
+    private static final double BUTTON_PADDING_X = 8;
+    private static final double BUTTON_PADDING_Y = 4;
+    private final double totalSpacing;
+
+    public IngredientListCell() {
+        this.setPadding(new Insets(CELL_PADDING));
+
+        textField = new TextField();
+        textField.setPromptText("Inhaltsstoff");
+        textField.textProperty().addListener(this::onTextFieldUpdate);
+
+        deleteButton = new Button("-");
+        deleteButton.setPadding(new Insets(
+                BUTTON_PADDING_Y,
+                BUTTON_PADDING_X,
+                BUTTON_PADDING_Y,
+                BUTTON_PADDING_X
+        ));
+        deleteButton.setOnAction(event -> getListView().getItems().remove(this));
+
+        // Calculate Delete Button Width
+        Text textNode = new Text(deleteButton.getText());
+        textNode.setFont(deleteButton.getFont());
+        double calculatedDeleteButtonWidth = textNode.getLayoutBounds().getWidth() + BUTTON_PADDING_X * 2;
+
+        totalSpacing = BUILTIN_BORDER_WIDTH * 2 // List View
+                       + CELL_PADDING * 2
+                       + CELL_SPACING
+                       + calculatedDeleteButtonWidth;
+    }
+
+    @Override
+    protected void updateItem(Ingredient item, boolean empty) {
+        super.updateItem(item, empty);
+        if (empty || item == null) {
+            setGraphic(null);
+        } else {
+            String oldText = textField.getText();
+            String newText = oldText != null && !oldText.isEmpty() ? oldText : item.getName();
+            textField.setText(newText);
+
+            BorderPane cellPane = new BorderPane();
+            cellPane.setCenter(textField);
+            cellPane.setRight(deleteButton);
+            BorderPane.setMargin(deleteButton, new Insets(0, 0, 0, CELL_SPACING));
+            setGraphic(cellPane);
+        }
+    }
+
+    /**
+     * A Callback for use as a Listener for the {@link IngredientListCell#textField}.
+     */
+    private void onTextFieldUpdate(ObservableValue<? extends String> observable, String oldValue, String newValue) {
+        getItem().setName(textField.getText());
+
+        textField.setMinWidth(getTextFieldRequiredWidth(textField));
+
+        ListView<Ingredient> listView = getListView();
+        double max = listView.lookupAll("*")
+                .stream()
+                .filter(node -> node instanceof IngredientListCell)
+                .mapToDouble(node -> getTextFieldRequiredWidth(((IngredientListCell) node).textField))
+                .max()
+                .orElse(0);
+
+        getListView().setMinWidth(max + totalSpacing);
+    }
+
+    /**
+     * Internal method to calculate the required width of the {@link IngredientListCell#textField}.
+     */
+    private double getTextFieldRequiredWidth(TextField textField) {
+        Text textNode = new Text(textField.getText());
+        textNode.setFont(textField.getFont());
+        return textNode.getLayoutBounds().getWidth()
+               + textField.getPadding().getLeft()
+               + textField.getPadding().getRight()
+               + BUILTIN_BORDER_WIDTH * 2;
+    }
+}

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

@@ -0,0 +1,134 @@
+package de.hitec.nhplus.medication;
+
+import de.hitec.nhplus.treatment.Treatment;
+import javafx.beans.value.ChangeListener;
+import javafx.collections.FXCollections;
+import javafx.collections.ObservableList;
+import javafx.fxml.FXML;
+import javafx.scene.control.Button;
+import javafx.scene.control.ListView;
+import javafx.scene.control.TextArea;
+import javafx.scene.control.TextField;
+import javafx.stage.Stage;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.function.Predicate;
+
+import static de.hitec.nhplus.utils.Validator.*;
+
+/**
+ * The controller for creating and editing a specific {@link Medication}.
+ *
+ * @author Ole Kück
+ */
+public class MedicationModalController {
+
+    @FXML
+    public ListView<Ingredient> listViewIngredients;
+    @FXML
+    public TextField textFieldName;
+    @FXML
+    public TextField textFieldManufacturer;
+    @FXML
+    public TextField textFieldAdministrationMethod;
+    @FXML
+    public TextField textFieldCurrentStock;
+    @FXML
+    public TextArea textAreaPossibleSideEffects;
+    @FXML
+    public Button buttonSave;
+
+    private Stage stage;
+    private Medication medication;
+    private final ObservableList<Ingredient> ingredients = FXCollections.observableArrayList();
+    private AllMedicationController controller;
+
+    /**
+     * Initialization method that is called after the binding of all the fields.
+     */
+    @FXML
+    public void initialize(
+            Stage stage,
+            AllMedicationController controller,
+            Medication medication
+    ) {
+        this.stage = stage;
+        this.controller=controller;
+
+        if( medication != null){
+            this.medication =  medication;
+        }else {
+            this.medication = new Medication(
+                    "",
+                    "",
+                    new ArrayList<>(),
+                    "",
+                    "",
+                    0
+            );
+            this.buttonSave.setDisable(true);
+        }
+
+        listViewIngredients.setCellFactory(cellData -> new IngredientListCell());
+        listViewIngredients.setItems(ingredients);
+        showData();
+
+        ChangeListener<String> inputMedicationValidationListener = (observableValue, oldText, newText) -> {
+            boolean isValid = isValidMedicationName(textFieldName.getText())
+                    && isValidMedicationManufacturer(textFieldManufacturer.getText())
+                    && isValidMedicationAdministrationMethod(textFieldAdministrationMethod.getText())
+                    && isValidStock(textFieldCurrentStock.getText());
+
+            this.buttonSave.setDisable(!isValid);
+        };
+
+        this.textFieldName.textProperty().addListener(inputMedicationValidationListener);
+        this.textFieldManufacturer.textProperty().addListener(inputMedicationValidationListener);
+        this.textFieldAdministrationMethod.textProperty().addListener(inputMedicationValidationListener);
+        this.textFieldCurrentStock.textProperty().addListener(inputMedicationValidationListener);
+    }
+
+    /**
+     * Internal method to show the data in the view.
+     */
+    private void showData(){
+        ingredients.setAll(medication.getIngredients());
+        textFieldName.setText(medication.getName());
+        textFieldManufacturer.setText(medication.getManufacturer());
+        textFieldAdministrationMethod.setText(medication.getAdministrationMethod());
+        textFieldCurrentStock.setText(String.valueOf(medication.getCurrentStock()));
+        textAreaPossibleSideEffects.setText(medication.getPossibleSideEffects());
+    }
+
+    @FXML
+    public void handleSave() {
+        this.medication.setName(textFieldName.getText());
+        this.medication.setManufacturer(textFieldManufacturer.getText());
+        this.medication.setAdministrationMethod(textFieldAdministrationMethod.getText());
+        this.medication.setCurrentStock(Integer.parseInt(textFieldCurrentStock.getText()));
+        this.medication.setPossibleSideEffects(textAreaPossibleSideEffects.getText());
+        this.medication.setIngredients(ingredients
+                .stream()
+                .map(Ingredient::getName)
+                .distinct()
+                .filter(Predicate.not(String::isEmpty))
+                .map(Ingredient::new)
+                .toList()
+        );
+
+        controller.createMedication(medication);
+        controller.readAllAndShowInTableView();
+        stage.close();
+    }
+
+    @FXML
+    public void handleCancel() {
+        stage.close();
+    }
+
+    @FXML
+    public void handleAddIngredient() {
+        ingredients.add(new Ingredient(""));
+    }
+}

src/main/java/de/hitec/nhplus/medication/database/MedicationDao.java

@@ -29,6 +29,7 @@ public class MedicationDao implements Dao<Medication> {
 
     @Override
     public void create(Medication medication) throws SQLException {
+        connection.setAutoCommit(false); //Switch to Manual Commit, to do an SQL Transaction
         final String medicationSQL = """
                     INSERT INTO medication
                     (name, manufacturer, possibleSideEffects, administrationMethod, currentStock)
@@ -42,6 +43,15 @@ public class MedicationDao implements Dao<Medication> {
         medicationStatement.setInt(5, medication.getCurrentStock());
         medicationStatement.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 ingredientSQL = """
                     INSERT INTO medication_ingredient
                     (id, name)
@@ -49,7 +59,7 @@ public class MedicationDao implements Dao<Medication> {
                 """;
         for (Ingredient ingredient : medication.getIngredients()) {
             PreparedStatement ingredientStatement = this.connection.prepareStatement(ingredientSQL);
-            ingredientStatement.setInt(1, medication.getId());
+            ingredientStatement.setInt(1, newId);
             ingredientStatement.setString(2, ingredient.getName());
             ingredientStatement.execute();
         }
@@ -90,20 +100,26 @@ public class MedicationDao implements Dao<Medication> {
                         result.getInt(1),
                         result.getString(2),
                         result.getString(3),
-                        List.of(),
+                        new ArrayList<>(),
                         result.getString(4),
                         result.getString(5),
                         result.getInt(6)
                 );
                 medications.add(medication);
-                lastMedicationId = currentMedicationId;
-                continue;
             }
             List<Ingredient> ingredients = ingredientMap.computeIfAbsent(currentMedicationId, k -> new ArrayList<>());
-            ingredients.add(new Ingredient(result.getString(7)));
+            String ingredientName = result.getString(7);
+            if(ingredientName == null){
+                continue;
+            }
+            ingredients.add(new Ingredient(ingredientName));
             lastMedicationId = currentMedicationId;
         }
         for (Medication medication : medications) {
+            List<Ingredient> ingredients = ingredientMap.get(medication.getId());
+            if(ingredients.isEmpty()){
+                continue;
+            }
             medication.setIngredients(ingredientMap.get(medication.getId()));
         }
 

src/main/java/de/hitec/nhplus/utils/Validator.java

@@ -148,4 +148,46 @@ public class Validator {
     public static boolean isValidRoomNumber(String text) {
         return !text.isBlank();
     }
+
+    /**
+     * Validate that a {@link String} is a valid {@link de.hitec.nhplus.medication.Medication#name Medication name}.
+     * @param text The {@link String} to validate.
+     */
+    public static boolean isValidMedicationName(String text) {
+        return !text.isBlank();
+    }
+
+    /**
+     * Validate that a {@link String} is a valid
+     * {@link de.hitec.nhplus.medication.Medication#manufacturer Medication manufacturer}.
+     * @param text The {@link String} to validate.
+     */
+    public static boolean isValidMedicationManufacturer(String text) {
+        return !text.isBlank();
+    }
+
+    /**
+     * Validate that a {@link String} is a valid
+     * {@link de.hitec.nhplus.medication.Medication#administrationMethod Medication administration method}.
+     * @param text The {@link String} to validate.
+     */
+    public static boolean isValidMedicationAdministrationMethod(String text) {
+        return !text.isBlank();
+    }
+
+    /**
+     * Validate that a {@link String} is a valid stock count.
+     * @param text The {@link String} to validate.
+     */
+    public static boolean isValidStock(String text) {
+        if (text.isBlank()) {
+            return false;
+        }
+        try {
+            int stock = Integer.parseInt(text);
+            return stock >= 0;
+        } catch (Exception exception) {
+            return false;
+        }
+    }
 }

src/main/resources/de/hitec/nhplus/medication/AllMedicationView.fxml

@@ -66,6 +66,7 @@
                             fx:id="buttonAdd"
                             mnemonicParsing="false"
                             prefWidth="90.0"
+                            onAction="#handleNewMedication"
                             text="Hinzufügen"
                     />
                     <Button

src/main/resources/de/hitec/nhplus/medication/MedicationModal.fxml

@@ -0,0 +1,141 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.geometry.*?>
+<?import javafx.scene.control.*?>
+<?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.medication.MedicationModalController"
+>
+    <padding>
+        <Insets top="8" left="8" bottom="8" right="8"/>
+    </padding>
+    <top>
+        <GridPane hgap="8.0">
+            <columnConstraints>
+                <ColumnConstraints hgrow="NEVER"/>
+                <ColumnConstraints hgrow="ALWAYS"/>
+                <ColumnConstraints hgrow="NEVER"/>
+                <ColumnConstraints hgrow="NEVER"/>
+                <ColumnConstraints hgrow="ALWAYS"/>
+            </columnConstraints>
+            <rowConstraints>
+                <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="NEVER"/>
+                <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="NEVER"/>
+            </rowConstraints>
+
+            <!-- Row 0-->
+            <Label
+                    GridPane.rowIndex="0"
+                    GridPane.columnIndex="0"
+                    text="Name:"
+            />
+            <TextField
+                    fx:id="textFieldName"
+                    GridPane.rowIndex="0"
+                    GridPane.columnIndex="1"
+            />
+            <Label
+                    GridPane.rowIndex="0"
+                    GridPane.columnIndex="3"
+                    text="Hersteller:"
+            />
+            <TextField
+                    fx:id="textFieldManufacturer"
+                    GridPane.rowIndex="0"
+                    GridPane.columnIndex="4"
+            />
+            <!-- Row 1 -->
+            <Label
+                    GridPane.rowIndex="1"
+                    GridPane.columnIndex="0"
+                    text="Verabreichungsmethode:"
+            />
+            <TextField
+                    fx:id="textFieldAdministrationMethod"
+                    GridPane.rowIndex="1"
+                    GridPane.columnIndex="1"
+            />
+            <Label
+                    GridPane.rowIndex="1"
+                    GridPane.columnIndex="3"
+                    text="Lagerbestand:"
+            />
+            <TextField
+                    fx:id="textFieldCurrentStock"
+                    GridPane.rowIndex="1"
+                    GridPane.columnIndex="4"
+            />
+
+        </GridPane>
+    </top>
+    <center>
+        <BorderPane>
+            <padding>
+                <Insets top="8" bottom="8"/>
+            </padding>
+            <left>
+                <BorderPane>
+                    <BorderPane.margin>
+                        <Insets right="8"/>
+                    </BorderPane.margin>
+                    <top>
+                        <Label text="Inhaltsstoffe:"/>
+                    </top>
+                    <center>
+                        <ListView fx:id="listViewIngredients" minWidth="200">
+                            <BorderPane.margin>
+                                <Insets top="8"/>
+                            </BorderPane.margin>
+                        </ListView>
+                    </center>
+                    <bottom>
+                        <AnchorPane>
+                            <BorderPane.margin>
+                                <Insets top="8"/>
+                            </BorderPane.margin>
+                            <Button
+                                    onAction="#handleAddIngredient"
+                                    text="+"
+                                    AnchorPane.leftAnchor="0"
+                                    AnchorPane.rightAnchor="0"
+                            />
+                        </AnchorPane>
+                    </bottom>
+                </BorderPane>
+            </left>
+            <center>
+                <BorderPane>
+                    <top>
+                        <Label text="Nebenwirkungen"/>
+                    </top>
+                    <center>
+                        <TextArea fx:id="textAreaPossibleSideEffects"/>
+                    </center>
+                </BorderPane>
+            </center>
+        </BorderPane>
+    </center>
+    <bottom>
+        <BorderPane>
+            <right>
+                <HBox spacing="8.0">
+                    <Button
+                            fx:id="buttonSave"
+                            prefWidth="90"
+                            mnemonicParsing="false"
+                            onAction="#handleSave"
+                            text="Speichern"
+                    />
+                    <Button
+                            prefWidth="90"
+                            mnemonicParsing="false"
+                            onAction="#handleCancel"
+                            text="Abbrechen"
+                    />
+                </HBox>
+            </right>
+        </BorderPane>
+    </bottom>
+</BorderPane>

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

@@ -119,7 +119,7 @@
                     fx:id="textAreaRemarks"
                     HBox.hgrow="ALWAYS"
             />
-            <VBox>
+            <VBox spacing="8.0">
                 <Button
                         fx:id="buttonSave"
                         prefWidth="90"