add fist admin user after start

prototype/src/main/java/org/hso/ecommerce/components/AdminInitializer.java

@@ -0,0 +1,37 @@
+package org.hso.ecommerce.components;
+
+import org.hso.ecommerce.entities.booking.PaymentMethod;
+import org.hso.ecommerce.entities.user.User;
+import org.hso.ecommerce.repos.user.UserRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import java.sql.Timestamp;
+import java.util.Optional;
+
+import javax.annotation.PostConstruct;
+
+@Component
+public class AdminInitializer {
+
+	@Autowired
+	private final UserRepository userRepository = null;
+
+	@PostConstruct
+	public void init() {
+		Optional<Integer> numberOfEmployees = userRepository.numberOfEmployees();
+		if (numberOfEmployees.orElse(0) == 0) {
+			// create first admin user
+			User firstAdmin = new User();
+			firstAdmin.created = new Timestamp(System.currentTimeMillis());
+			firstAdmin.name = "admin";
+			firstAdmin.defaultPayment = new PaymentMethod();
+			firstAdmin.defaultPayment.creditCardNumber = ""; //set empty number
+			firstAdmin.email = "admin";
+			firstAdmin.isActive = true;
+			firstAdmin.isEmployee = true;
+			firstAdmin.setPassword("admin");
+			userRepository.save(firstAdmin); //save to DB
+		}
+	}
+}

prototype/src/main/java/org/hso/ecommerce/components/SlotInitializer.java

@@ -23,10 +23,8 @@ public class SlotInitializer {
 				Slot slotAdded = new Slot();
 				slotAdded.slotNum = i;
 				slotRepository.save(slotAdded);
-
 				System.out.println("Added Slot " + i + " to DB");
 			}
 		}
 	}
-
 }

prototype/src/main/java/org/hso/ecommerce/repos/user/UserRepository.java

@@ -13,6 +13,14 @@ public interface UserRepository extends JpaRepository<User, Long> {
     @Query("SELECT c FROM User c WHERE c.email = :email")
     Optional<User> findByEmail(String email);
     
+    /*SELECT count(*) FROM users WHERE is_employee == 1;
+     */
+
+    
+    @Query("SELECT count(*) FROM User WHERE isEmployee = true")
+    Optional<Integer> numberOfEmployees();
+    
+    
 }