From c4a635a24805f1ea50079ebe5c823ae88f004848 Mon Sep 17 00:00:00 2001
From: Sebastian <13592751+MrSebastian@users.noreply.github.com>
Date: Sun, 17 Mar 2024 01:46:01 +0100
Subject: [PATCH] delete person ref from task assignee

---
 .../backend/task/service/TaskService.java     |  5 +++++
 .../service/events/PersonEventsListener.java  | 19 +++++++++++++++++++
 2 files changed, 24 insertions(+)
 create mode 100644 backend/src/main/java/de/mrsebastian/todoappdemo/backend/task/service/events/PersonEventsListener.java

diff --git a/backend/src/main/java/de/mrsebastian/todoappdemo/backend/task/service/TaskService.java b/backend/src/main/java/de/mrsebastian/todoappdemo/backend/task/service/TaskService.java
index 446f8a15..e000b22d 100644
--- a/backend/src/main/java/de/mrsebastian/todoappdemo/backend/task/service/TaskService.java
+++ b/backend/src/main/java/de/mrsebastian/todoappdemo/backend/task/service/TaskService.java
@@ -72,6 +72,11 @@ public void updateTaskAssignee(final UUID taskId, @Nullable final TaskAssigneeDT
         }
     }
 
+    @PreAuthorize("hasAnyRole(T(de.mrsebastian.todoappdemo.backend.security.AuthoritiesEnum).TASK_ADMIN.name())")
+    public void removePersonFromTasks(final UUID personId) {
+        getTaskWithAssignee(personId).forEach(task -> taskDAService.removeAssignee(task.id()));
+    }
+
     private void checkIfExistsOrThrow(final UUID taskId) {
         if (!taskDAService.taskExsits(taskId)) {
             throw new NotFoundException(taskId, Task.class);
diff --git a/backend/src/main/java/de/mrsebastian/todoappdemo/backend/task/service/events/PersonEventsListener.java b/backend/src/main/java/de/mrsebastian/todoappdemo/backend/task/service/events/PersonEventsListener.java
new file mode 100644
index 00000000..c7737064
--- /dev/null
+++ b/backend/src/main/java/de/mrsebastian/todoappdemo/backend/task/service/events/PersonEventsListener.java
@@ -0,0 +1,19 @@
+package de.mrsebastian.todoappdemo.backend.task.service.events;
+
+import de.mrsebastian.todoappdemo.backend.person.service.events.PersonDeleteEvent;
+import de.mrsebastian.todoappdemo.backend.task.service.TaskService;
+import lombok.AllArgsConstructor;
+import org.springframework.context.event.EventListener;
+import org.springframework.stereotype.Component;
+
+@Component
+@AllArgsConstructor
+public class PersonEventsListener {
+
+    private final TaskService taskService;
+
+    @EventListener
+    public void handlePersonDeletedEvent(final PersonDeleteEvent personDeleteEvent) {
+        taskService.removePersonFromTasks(personDeleteEvent.personId());
+    }
+}