NoteStoreService.java

package hu.pazmany;

import org.springframework.stereotype.Service;

import java.time.LocalDateTime;

@Service
public class NoteStoreService {
    private final DocumentRepository documentRepository;
    private final UserRepository userRepository;
    private final SubjectRepository subjectRepository;

    public NoteStoreService(DocumentRepository documentRepository, UserRepository userRepository, SubjectRepository subjectRepository) {
        this.documentRepository = documentRepository;
        this.userRepository = userRepository;
        this.subjectRepository = subjectRepository;
    }

    public UserLoginDto authenticate(String username, String password) {
        User user = userRepository.findByUsername(username);
        UserLoginDto userLoginDto = new UserLoginDto();
        userLoginDto.setFullName("Fullnamen't");
        userLoginDto.setLoggedIn(false);
        if (user != null && user.getPassword().equals(password)) {
            userLoginDto.setFullName(user.getFullName());
            userLoginDto.setLoggedIn(!user.isLoggedIn());
            user.setLoggedIn(!user.isLoggedIn());
            userRepository.save(user);
        }
        return userLoginDto;
    }

    public String register(String fullName, String username, String password) {
        if (userRepository.findByUsername(username) == null) {
            User user = new User();
            user.setFullName(fullName);
            user.setUsername(username);
            user.setPassword(password);
            user.setLoggedIn(false);
            userRepository.save(user);
            return "Successful registration!";
        }
        return "User already exists!";
    }

    public DocumentDto getDetails(long id, String subjectName) {
        Document result = documentRepository.findAllBySubject(subjectRepository.findBySubjectId(subjectName)).get((int) id);

        DocumentDto doc = new DocumentDto();
        doc.setID(result.getId());
        doc.setUser(result.getUser().getFullName());
        doc.setSubject(result.getSubject().getName());
        doc.setTitle(result.getTitle());
        doc.setUploaded(result.getUploaded().toString());
        doc.setDescription(result.getDescription());
        doc.setFilepath(result.getFilepath());

        return doc;
    }

    public void setDetails(DocumentDto documentDto) {
        Document document = new Document();
        document.setId(documentDto.getID());
        document.setUser(userRepository.findByUsername(documentDto.getUser()));
        document.setSubject(subjectRepository.findBySubjectId(documentDto.getSubject()));
        document.setTitle(documentDto.getTitle());
        document.setDescription(documentDto.getDescription());
        document.setUploaded(LocalDateTime.now());
        document.setFilepath(documentDto.getFilepath());
        documentRepository.save(document);
    }

    public void addSubject(SubjectDto subjectDto) {
        Subject subject = new Subject();
        subject.setSubjectId(subjectDto.getSubjectId());
        subject.setName(subjectDto.getName());
        subjectRepository.save(subject);
    }
}