INC-1 add login function

src/main/java/ru/soune/no_copy/service/AuthService.java

@@ -6,17 +6,17 @@ import org.springframework.security.crypto.password.PasswordEncoder;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import ru.soune.no_copy.dto.LoginRequest;
-import ru.soune.no_copy.dto.LoginResponse;
 import ru.soune.no_copy.dto.RegisterRequest;
 import ru.soune.no_copy.entity.AuthToken;
 import ru.soune.no_copy.entity.User;
+import ru.soune.no_copy.exception.NotValidationPasswordException;
 import ru.soune.no_copy.exception.UserAlreadyExistsException;
+import ru.soune.no_copy.exception.UserNotFoundException;
 import ru.soune.no_copy.repository.AuthTokenRepository;
 import ru.soune.no_copy.repository.UserRepository;
 
 import java.security.SecureRandom;
-import java.time.LocalDateTime;
-import java.util.HexFormat;
+import java.util.Base64;
 import java.util.Locale;
 import java.util.Optional;
 
@@ -32,6 +32,8 @@ public class AuthService {
 
     private final MessageSource messageSource;
 
+    private final SecureRandom secureRandom = new SecureRandom();
+
     @Transactional
     public AuthToken register(RegisterRequest registerRequest) {
         if (userRepository.existsByEmail(registerRequest.email())) {
@@ -49,48 +51,37 @@ public class AuthService {
         User savedUser = userRepository.save(user);
 
         AuthToken authToken = new AuthToken();
-        authToken.setToken(generateToken());
+        authToken.setToken(generateAuthToken());
         authToken.setUser(savedUser);
 
         return authTokenRepository.save(authToken);
     }
 
-    public LoginResponse login(LoginRequest request) {
+    @Transactional
+    public AuthToken login(LoginRequest request) {
         Optional<User> userOpt = userRepository.findByEmail(request.getEmail());
+
         if (userOpt.isEmpty()) {
-            //ADD EXCEPTION
+            throw new UserNotFoundException("User with email " + request.getEmail() + " not found");
         }
 
         User user = userOpt.get();
 
         if (!passwordEncoder.matches(request.getPassword(), user.getPassword())) {
-            //ADD EXCEPTION
+            throw new NotValidationPasswordException("Invalid password");
         }
 
-        String token = generateToken();
-        LocalDateTime expiresAt = LocalDateTime.now().plusDays(30);
-
         AuthToken authToken = new AuthToken();
-        authToken.setToken(generateToken());
+        authToken.setToken(generateAuthToken());
         authToken.setUser(user);
 
-        authTokenRepository.save(authToken);
-
-        userRepository.save(user);
-
-        LoginResponse response = new LoginResponse();
-        response.setSuccess(true);
-//        response.setMessage(""); add message
-        response.setUser(user);
-        response.setToken(token);
-        response.setExpiresAt(expiresAt.toString());
-
-        return response;
+        return authTokenRepository.save(authToken);
     }
-//TODO change logic generate token
-    private String generateToken() {
+
+
+    private String generateAuthToken() {
         byte[] bytes = new byte[32];
-        new SecureRandom().nextBytes(bytes);
-        return HexFormat.of().formatHex(bytes);
+        secureRandom.nextBytes(bytes);
+        return Base64.getUrlEncoder().withoutPadding().encodeToString(bytes);
     }
 }