#24 todo app

web-container-config/src/main/java/de/nbscloud/webcontainer/shared/util/ControllerUtils.java

@@ -0,0 +1,16 @@
+package de.nbscloud.webcontainer.shared.util;
+
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+import java.util.Optional;
+
+public class ControllerUtils {
+
+    public static LocalDate parseDate(String date) {
+        // The format is always "yyyy-MM-dd", see https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/date
+        return Optional.ofNullable(date)
+                                             .map(ed -> ed.isBlank() ? null : ed)
+                                             .map(ed -> LocalDate.parse(ed, DateTimeFormatter.ofPattern("yyyy-MM-dd")))
+                                             .orElse(null);
+    }
+}