34. User Details Service Implementation (#2)

support-portal-backend/src/main/java/net/shyshkin/study/fullstack/supportportal/backend/service/UserService.java

@@ -0,0 +1,6 @@
+package net.shyshkin.study.fullstack.supportportal.backend.service;
+
+import org.springframework.security.core.userdetails.UserDetailsService;
+
+public interface UserService extends UserDetailsService {
+}

support-portal-backend/src/main/java/net/shyshkin/study/fullstack/supportportal/backend/service/UserServiceImpl.java

@@ -0,0 +1,31 @@
+package net.shyshkin.study.fullstack.supportportal.backend.service;
+
+import lombok.RequiredArgsConstructor;
+import net.shyshkin.study.fullstack.supportportal.backend.domain.User;
+import net.shyshkin.study.fullstack.supportportal.backend.domain.UserPrincipal;
+import net.shyshkin.study.fullstack.supportportal.backend.repository.UserRepository;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.core.userdetails.UsernameNotFoundException;
+import org.springframework.stereotype.Service;
+
+import javax.transaction.Transactional;
+import java.time.LocalDateTime;
+
+@Service
+@RequiredArgsConstructor
+public class UserServiceImpl implements UserService {
+
+    private final UserRepository userRepository;
+
+    @Override
+    @Transactional
+    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
+        User user = userRepository
+                .findByUsername(username)
+                .orElseThrow(() -> new UsernameNotFoundException("User with username `" + username + "` not found"));
+        user.setLastLoginDateDisplay(user.getLastLoginDate());
+        user.setLastLoginDate(LocalDateTime.now());
+        userRepository.save(user);
+        return new UserPrincipal(user);
+    }
+}