From 710b661b0db369a6436fe59ce1f5f62dd2582dbf Mon Sep 17 00:00:00 2001
From: Marc Beyer <marc.beyer@edu.bib.de>
Date: Sat, 29 Jan 2022 09:55:06 +0100
Subject: [PATCH] Fixed user/del endpoint

---
 .../vpr/server/controller/UserController.java |  3 +++
 .../implementation/UserDAOImplementation.java | 13 ++++++++++++
 .../vpr/server/dao/interfaces/UserDAO.java    |  2 ++
 .../main/java/com/vpr/server/data/User.java   | 20 ++++++++++++++-----
 4 files changed, 33 insertions(+), 5 deletions(-)

diff --git a/server/src/main/java/com/vpr/server/controller/UserController.java b/server/src/main/java/com/vpr/server/controller/UserController.java
index bc0857b..9c9e27b 100644
--- a/server/src/main/java/com/vpr/server/controller/UserController.java
+++ b/server/src/main/java/com/vpr/server/controller/UserController.java
@@ -144,6 +144,9 @@ public class UserController {
         if (user == null) {
             return new ResponseEntity<>("User nicht in der Datenbank vorhanden", HttpStatus.BAD_REQUEST);
         }
+        if(userDAO.deleteAllUserEvents(user.getId())){
+            return new ResponseEntity<>("User konnte nicht gelöscht werden", HttpStatus.INTERNAL_SERVER_ERROR);
+        }
         userRepository.delete(user);
         return new ResponseEntity<>("", HttpStatus.OK);
     }
diff --git a/server/src/main/java/com/vpr/server/dao/implementation/UserDAOImplementation.java b/server/src/main/java/com/vpr/server/dao/implementation/UserDAOImplementation.java
index 3c2b857..c3c44da 100644
--- a/server/src/main/java/com/vpr/server/dao/implementation/UserDAOImplementation.java
+++ b/server/src/main/java/com/vpr/server/dao/implementation/UserDAOImplementation.java
@@ -21,4 +21,17 @@ public class UserDAOImplementation implements UserDAO {
     public List<User> getAllUser() {
         return manager.createNamedQuery("getAllUser", User.class).getResultList();
     }
+
+    @Override
+    public boolean deleteAllUserEvents(long userId) {
+        try {
+            manager.createNamedQuery("deleteAllUserEvents", User.class)
+                    .setParameter("userId", userId)
+                    .executeUpdate();
+
+            return true;
+        }catch (Exception e){
+            return false;
+        }
+    }
 }
diff --git a/server/src/main/java/com/vpr/server/dao/interfaces/UserDAO.java b/server/src/main/java/com/vpr/server/dao/interfaces/UserDAO.java
index b163e94..8cf8aa8 100644
--- a/server/src/main/java/com/vpr/server/dao/interfaces/UserDAO.java
+++ b/server/src/main/java/com/vpr/server/dao/interfaces/UserDAO.java
@@ -6,4 +6,6 @@ import java.util.List;
 
 public interface UserDAO {
     List<User> getAllUser();
+
+    boolean deleteAllUserEvents(long userId);
 }
diff --git a/server/src/main/java/com/vpr/server/data/User.java b/server/src/main/java/com/vpr/server/data/User.java
index 01e0b84..b444d38 100644
--- a/server/src/main/java/com/vpr/server/data/User.java
+++ b/server/src/main/java/com/vpr/server/data/User.java
@@ -6,12 +6,22 @@ import java.util.List;
 // @Entity creates a table out of this class with Hibernate
 @Entity(name = "User")
 @Table(name = "user")
+
+@SqlResultSetMapping(name="deleteResult", columns = {
+        @ColumnResult(name = "count")
+})
+
 @NamedNativeQueries({
-        @NamedNativeQuery(
-                name = "getAllUser",
-                query = "SELECT * FROM user",
-                resultClass = User.class
-        )
+    @NamedNativeQuery(
+        name = "getAllUser",
+        query = "SELECT * FROM user",
+        resultClass = User.class
+    ),
+    @NamedNativeQuery(
+        name = "deleteAllUserEvents",
+        query = "DELETE FROM user_event WHERE user_id = :userId",
+            resultSetMapping = "deleteResult"
+    )
 })
 public class User {
     // Generate the primary key