Added input validation for creating events

client/app/src/main/java/main/CreateEventController.java

@@ -3,10 +3,7 @@ package main;
 import javafx.event.ActionEvent;
 import javafx.fxml.FXML;
 import javafx.scene.Node;
-import javafx.scene.control.CheckBox;
-import javafx.scene.control.ComboBox;
-import javafx.scene.control.DatePicker;
-import javafx.scene.control.TextField;
+import javafx.scene.control.*;
 import javafx.stage.Stage;
 import res.DataController;
 import res.Event;
@@ -29,16 +26,25 @@ public class CreateEventController {
     public CheckBox checkBoxIsFullDay;
     @FXML
     public CheckBox checkBoxIsPrivate;
+    @FXML
+    public Label labelError;
 
 
-    public CreateEventController(){}
+
+    public CreateEventController() {
+    }
 
     @FXML
-    public void initialize(){}
+    public void initialize() {
+    }
 
 
     @FXML
     protected void createBtnClick(ActionEvent actionEvent) {
+        try {
+            if(datePickerDate.getValue() == null){
+                throw new IllegalArgumentException("Bitte w\u00e4hle ein Datum aus");
+            }
 
             Event event = new Event(
                     textName.getText(),
@@ -58,6 +64,9 @@ public class CreateEventController {
 
             Stage stage = (Stage) ((Node) actionEvent.getSource()).getScene().getWindow();
             stage.close();
+        } catch (RuntimeException e) {
+            labelError.setText(e.getMessage());
+        }
     }
 
     @FXML

client/app/src/main/java/main/MainController.java

@@ -69,7 +69,7 @@ public class MainController {
     protected void onAddBtnClick() {
         try {
             FXMLLoader fxmlLoader = new FXMLLoader(MainApplication.class.getResource("create-event.fxml"));
-            Scene scene = new Scene(fxmlLoader.load(), 650, 500);
+            Scene scene = new Scene(fxmlLoader.load(), 650, 650);
             scene.getStylesheets().add(Objects.requireNonNull(MainApplication.class.getResource("create-event.css")).toExternalForm());
             Stage stage = new Stage();
             stage.setTitle("Termin erstellen");

client/app/src/main/resources/main/create-event.css

@@ -33,3 +33,14 @@ Label{
 .mainButton{
     -fx-font-weight: bold;
 }
+
+#labelError{
+    -fx-font-weight: bold;
+    -fx-max-width: 1000px;
+    -fx-text-fill: #ff5555;
+    -fx-padding: 16px;
+    -fx-min-height: 140px;
+    -fx-max-height: 400px;
+    -fx-wrap-text: true;
+    -fx-font-size: 16px;
+}

client/app/src/main/resources/main/create-event.fxml

@@ -22,6 +22,7 @@
         <RowConstraints vgrow="ALWAYS" />
         <RowConstraints vgrow="ALWAYS" />
         <RowConstraints vgrow="ALWAYS" />
+        <RowConstraints vgrow="ALWAYS" />
     </rowConstraints>
 
     <Label styleClass="mainLabel">Termin anlegen</Label>
@@ -51,8 +52,9 @@
     </ComboBox>
     <CheckBox fx:id="checkBoxIsFullDay" GridPane.columnIndex="1" GridPane.rowIndex="7"/>
     <CheckBox fx:id="checkBoxIsPrivate" GridPane.columnIndex="1" GridPane.rowIndex="8"/>
+    <Label fx:id="labelError" GridPane.columnIndex="1" GridPane.rowIndex="9"/>
 
-    <HBox GridPane.columnIndex="1" GridPane.rowIndex="9" GridPane.columnSpan="2"  alignment="CENTER_RIGHT">
+    <HBox GridPane.columnIndex="1" GridPane.rowIndex="10" GridPane.columnSpan="2"  alignment="CENTER_RIGHT">
         <Button onAction="#abortBtnClick" maxWidth="150" minWidth="150" >Abbrechen</Button>
         <Button styleClass="mainButton" onAction="#createBtnClick" maxWidth="150" minWidth="150">Anlegen</Button>
     </HBox>

client/data/src/main/java/res/DataController.java

@@ -29,7 +29,7 @@ public class DataController {
         try {
             System.out.println(httpRequest.sendPostRequest(ADD_EVENT_ENDPOINT, event.getAsUrlParam()));
         } catch (Exception e) {
-            e.printStackTrace();
+            throw new RuntimeException("Es konnte keine Verbindung mit dem Server hergestellt werden.");
         }
     }
 

client/data/src/main/java/res/Event.java

@@ -2,9 +2,14 @@ package res;
 
 import com.sun.jdi.event.StepEvent;
 
+import java.time.Duration;
+import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
 import java.util.ArrayList;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import java.util.regex.PatternSyntaxException;
 
 public class Event {
 
@@ -61,7 +66,23 @@ public class Event {
                  String end,
                  LocalDateTime date,
                  int ownerId
-    ) {
+    ) throws IllegalArgumentException{
+        if(name.length() < 3){
+            throw new IllegalArgumentException("Der Name muss eine L\u00e4nge von 3 haben.");
+        }
+        Pattern pattern = Pattern.compile("[A-Za-zÄÖÜäöü0-9 =!?+*/$%€.:,;_<>()-]*");
+        Matcher matcher = pattern.matcher(name);
+        if(!matcher.matches()){
+            throw new IllegalArgumentException("Der Name Darf nur aus Zahlen, Buchstaben und folgenden Sonderzeichen bestehen: =!?+*/$%€.:,;_ <>()-");
+        }
+        if(priority < 0){
+            throw new IllegalArgumentException("Bitte eine Priorit\u00e4t w\u00e4hlen.");
+        }
+        LocalDateTime today = LocalDateTime.now().toLocalDate().atStartOfDay();
+        if(Duration.between(today, date).isNegative()){
+            throw new IllegalArgumentException("Das Datum muss in der Zukunft liegen.");
+        }
+
         this.name = name;
         this.priority = priority;
         this.isFullDay = isFullDay;