implelemtn usersRepostiroy cleanup

service/src/main/java/CTFApplication.java

@@ -41,6 +41,7 @@ public class CTFApplication extends Application<ApplicationConfiguration> {
         mongoDBConnector.connect();
 
         UsersRepository usersRepository = new UsersRepository(mongoDBConnector);//todo: use injections
+        usersRepository.clean(); //todo
 
         int numberOfNewUsers = new Random().nextInt(50);
         for(int i = 0; i < numberOfNewUsers; i++) {

service/src/main/java/Repository/UsersRepository.java

@@ -38,4 +38,8 @@ public class UsersRepository implements Repository {
     public void add(User user) {
         mongoDBConnector.addDocument("users", new Document(user.toMap()));
     }
+
+    public void clean() {
+        mongoDBConnector.removeCollection("users");
+    }
 }

service/src/main/java/database/MongoDBConnector.java

@@ -47,4 +47,8 @@ public class MongoDBConnector implements DBConnector {
         database.getCollection(collectionName).insertOne(document);
     }
 
+    public void removeCollection(String collectionName) {
+        database.getCollection(collectionName).drop();
+    }
+
 }