NCBACK-33 add verification logic

src/main/java/ru/soune/nocopy/service/register/AuthService.java

@@ -50,17 +50,14 @@ public class AuthService {
 
         User savedUser = userRepository.save(user);
 
-        AuthToken authToken = new AuthToken();
-        authToken.setToken(generateAuthToken());
-        authToken.setUser(savedUser);
+        AuthToken authToken = genereateAuthToken(savedUser);
 
         return authTokenRepository.save(authToken);
     }
 
     @Transactional
     public AuthToken login(LoginRequest request) {
-        Optional<User> userOpt = userRepository.findByEmail(request.getEmail());
-        User user = userOpt.get();
+        User user = userRepository.findByEmail(request.getEmail());
 
         if (!passwordEncoder.matches(request.getPassword(), user.getPassword())) {
             LoginAnswer loginAnswer = new LoginAnswer();
@@ -87,6 +84,18 @@ public class AuthService {
                 .ifPresent(authTokenRepository::delete);
     }
 
+    public AuthToken generateAuthToken(User user) {
+        return authTokenRepository.save(genereateAuthToken(user));
+    }
+
+    private AuthToken genereateAuthToken(User user) {
+        AuthToken authToken = new AuthToken();
+        authToken.setToken(generateAuthToken());
+        authToken.setUser(user);
+
+        return authToken;
+    }
+
     private String generateAuthToken() {
         byte[] bytes = new byte[32];
         secureRandom.nextBytes(bytes);