jpa issues

@PostMapping("/paste")
    Paste postPaste(@RequestBody PasteDto payload, Principal principal) {
        String title = payload.title().isBlank() ? "Untitled" : payload.title();
        Paste paste = new Paste(title, payload.text(), payload.lang());
        if (principal != null) {
            User user = this.userRepo.findByUsername(principal.getName());
            paste.setUploader(user);
            user.addPaste(paste);
        }
        System.out.println(paste.getId());
        this.pasteRepo.save(paste);
        return paste;
    }

@PostMapping("/paste")
    Paste postPaste(@RequestBody PasteDto payload, Principal principal) {
        String title = payload.title().isBlank() ? "Untitled" : payload.title();
        Paste paste = new Paste(title, payload.text(), payload.lang());
        if (principal != null) {
            User user = this.userRepo.findByUsername(principal.getName());
            paste.setUploader(user);
            user.addPaste(paste);
        }
        System.out.println(paste.getId());
        this.pasteRepo.save(paste);
        return paste;
    }

@RestController
@RequiredArgsConstructor
public class PasteController {
    private final PasteRepository pasteRepo;
    private final UserRepository userRepo;

@RestController
@RequiredArgsConstructor
public class PasteController {
    private final PasteRepository pasteRepo;
    private final UserRepository userRepo;

@Service
public class UserDetailsServiceImpl implements UserDetailsService {
    private UserRepository repo;
    private PasswordEncoder encoder;

    @Autowired
    public UserDetailsServiceImpl(UserRepository repo, PasswordEncoder encoder) {
        this.repo = repo;
        this.repo.save(new User("user", "email@email.com", encoder.encode("password")));
        this.repo.save(User.anon);
    }

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        return Optional.ofNullable(this.repo.findByUsername(username))
                .map(e -> {System.out.println(e); return e;})
                .map(CustomUserDetails::new)
                .orElseThrow(() -> new UsernameNotFoundException(username));
    }
}
// Bit weird, rewrite to this.
@Slf4j
@Service
public class UserDetailsServiceImpl implements UserDetailsService { // This is good. 10/10 for actually making a UserDetailsService
    private final UserRepository repo;
    private final PasswordEncoder encoder;

    public UserDetailsServiceImpl(UserRepository repo, PasswordEncoder encoder) {
        this.repo = repo;
        this.encoder = encoder;
        createUsers();
    }

    private void createUsers() { // Do setup in a seperate function so your Constructor has a single purpose, and this function has a single purpose.
        repo.save(new User("user", "email@email.com", encoder.encode("password")));
        repo.save(User.anon);
    }

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        var user = Optional.ofNullable(this.repo.findByUsername(username)).orElseThrow(() -> new UsernameNotFoundException(username)); // Remove the Maps since we want to log.
        log.debug("User Found in the Database: {}", e); // Prefer Logs over Console Prints.
        return new CustomerUserDetails(e);
    }
}

@Service
public class UserDetailsServiceImpl implements UserDetailsService {
    private UserRepository repo;
    private PasswordEncoder encoder;

    @Autowired
    public UserDetailsServiceImpl(UserRepository repo, PasswordEncoder encoder) {
        this.repo = repo;
        this.repo.save(new User("user", "email@email.com", encoder.encode("password")));
        this.repo.save(User.anon);
    }

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        return Optional.ofNullable(this.repo.findByUsername(username))
                .map(e -> {System.out.println(e); return e;})
                .map(CustomUserDetails::new)
                .orElseThrow(() -> new UsernameNotFoundException(username));
    }
}
// Bit weird, rewrite to this.
@Slf4j
@Service
public class UserDetailsServiceImpl implements UserDetailsService { // This is good. 10/10 for actually making a UserDetailsService
    private final UserRepository repo;
    private final PasswordEncoder encoder;

    public UserDetailsServiceImpl(UserRepository repo, PasswordEncoder encoder) {
        this.repo = repo;
        this.encoder = encoder;
        createUsers();
    }

    private void createUsers() { // Do setup in a seperate function so your Constructor has a single purpose, and this function has a single purpose.
        repo.save(new User("user", "email@email.com", encoder.encode("password")));
        repo.save(User.anon);
    }

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        var user = Optional.ofNullable(this.repo.findByUsername(username)).orElseThrow(() -> new UsernameNotFoundException(username)); // Remove the Maps since we want to log.
        log.debug("User Found in the Database: {}", e); // Prefer Logs over Console Prints.
        return new CustomerUserDetails(e);
    }
}

int code=404;
HttpStatus status=HttpStatus.resolve(code);
String name = status.toString();

int code=404;
HttpStatus status=HttpStatus.resolve(code);
String name = status.toString();

List<Paste> latestPastes = this.pasteRepo.findAll().stream()
  .sorted(Comparator.comparing(Paste::getTimestamp).reversed())
  .limit(6) // show 6 entries
  .toList();

List<Paste> latestPastes = this.pasteRepo.findAll().stream()
  .sorted(Comparator.comparing(Paste::getTimestamp).reversed())
  .limit(6) // show 6 entries
  .toList();

        List<Paste> latestPastes = StreamSupport.stream(this.pasteRepo.findAll().spliterator(), false)

        List<Paste> latestPastes = StreamSupport.stream(this.pasteRepo.findAll().spliterator(), false)

List<Paste> findAll();

List<Paste> findAll();

@Controller
public class MyController {

   public ResponseEntity<String> myString() {
      return ResponseEntity.ok("foo");
   }

   @ResponseBody
   public String myResponseString() {
      return "bar";
  }
}
@RestController
public class MyRestController {
   public ResponseEntity<String> myString() {
      return ResponseEntity.ok("foo");
   }

   public String myResponseString() {
      return "bar";
  }
}

@Controller
public class MyController {

   public ResponseEntity<String> myString() {
      return ResponseEntity.ok("foo");
   }

   @ResponseBody
   public String myResponseString() {
      return "bar";
  }
}
@RestController
public class MyRestController {
   public ResponseEntity<String> myString() {
      return ResponseEntity.ok("foo");
   }

   public String myResponseString() {
      return "bar";
  }
}