CAS Part 1

Signed-off-by: Marcin Woźniak <y0rune@aol.com>

buisnesslogic/src/main/java/com/plannaplan/services/UserService.java

@@ -24,6 +24,31 @@ public class UserService {
         super();
     }
 
+    public User checkForUser(String email, String usosId) {
+        if (usosId == null) {
+            Optional <User> user = this.repo.getByAuthority(email.replace("\n", "").trim()); 
+            if (user.isPresent()){
+                return user.get();
+            }
+            else {
+                final User newUser = new User(null,null,email.replace("\n", "").trim(),UserRoles.STUDENT);
+                this.repo.save(newUser);
+                return newUser;
+            }
+        }
+        else {
+            Optional <User> user = this.repo.getByUsosId(usosId.replace("\n", "").trim());
+            if (user.isPresent()){
+                return user.get();
+            }
+            else {
+                final User newUser = new User(null,null,email.replace("\n", "").trim(),usosId,UserRoles.STUDENT);
+                this.repo.save(newUser);
+                return newUser;
+            }
+        }
+    }
+
     public String login(String authority) throws UserNotFoundException {
         User user = this.repo.getByAuthority(authority.replace("\n", "").trim())
                 .orElseThrow(() -> new UserNotFoundException("Can not find user with given authority"));