🐛 Fixing bug where User data was not properly saved to CoreData

DHBW-Service/Utility/UtilityFunctions.swift

@@ -0,0 +1,42 @@
+//
+//  UtilityFunctions.swift
+//  DHBW-Service
+//
+//  Created by Patrick Müller on 22.12.20.
+//
+
+import Foundation
+import CoreData
+
+class UtilityFunctions {
+    public class func getCoreDataObject(entity: String) -> [NSManagedObject]{
+        let managedContext =
+            PersistenceController.shared.context
+        
+        let fetchRequest =
+          NSFetchRequest<NSManagedObject>(entityName: entity)
+        
+        do {
+            return try managedContext.fetch(fetchRequest)
+        } catch let error as NSError {
+            print("Could not fetch. \(error), \(error.userInfo)")
+            return []
+        }
+    }
+    
+    public class func deleteAllCoreDataEntitiesOfType(type: String) -> Bool{
+        let fetchRequest: NSFetchRequest<NSFetchRequestResult> = NSFetchRequest(entityName: type)
+        let deleteRequest = NSBatchDeleteRequest(fetchRequest: fetchRequest)
+
+        do {
+            try PersistenceController.shared.context.execute(deleteRequest)
+            
+            PersistenceController.shared.save()
+            
+            return true
+        } catch let error as NSError {
+            print(error)
+            return false
+        }
+    }
+}