Troisième série d’améliorations de l’application Reddit

public interface PostRepository extends JpaRepository {
    ...
    Long countByUser(User user);
}

@Override
public List getPostsList(int page, int size, String sortDir, String sort) {
    PageRequest pageReq = new PageRequest(page, size, Sort.Direction.fromString(sortDir), sort);
    Page posts = postRepository.findByUser(userService.getCurrentUser(), pageReq);
    return constructDataAccordingToUserTimezone(posts.getContent());
}

private List constructDataAccordingToUserTimezone(List posts) {
    String timeZone = userService.getCurrentUser().getPreference().getTimezone();
    return posts.stream().map(post -> new SimplePostDto(
      post, convertToUserTomeZone(post.getSubmissionDate(), timeZone)))
      .collect(Collectors.toList());
}
private String convertToUserTomeZone(Date date, String timeZone) {
    dateFormat.setTimeZone(TimeZone.getTimeZone(timeZone));
    return dateFormat.format(date);
}

@RequestMapping(method = RequestMethod.GET)
@ResponseBody
public List getScheduledPosts(
  @RequestParam(value = "page", required = false, defaultValue = "0") int page,
  @RequestParam(value = "size", required = false, defaultValue = "10") int size,
  @RequestParam(value = "sortDir", required = false, defaultValue = "asc") String sortDir,
  @RequestParam(value = "sort", required = false, defaultValue = "title") String sort,
  HttpServletResponse response) {
    response.addHeader("PAGING_INFO",
      scheduledPostService.generatePagingInfo(page, size).toString());
    return scheduledPostService.getPostsList(page, size, sortDir, sort);
}

public PagingInfo generatePagingInfo(int page, int size) {
    long total = postRepository.countByUser(userService.getCurrentUser());
    return new PagingInfo(page, size, total);
}

public class PagingInfo {
    private long totalNoRecords;
    private int totalNoPages;
    private String uriToNextPage;
    private String uriToPrevPage;

    public PagingInfo(int page, int size, long totalNoRecords) {
        this.totalNoRecords = totalNoRecords;
        this.totalNoPages = Math.round(totalNoRecords / size);
        if (page > 0) {
            this.uriToPrevPage = "page=" + (page - 1) + "&size=" + size;
        }
        if (page < this.totalNoPages) {
            this.uriToNextPage = "page=" + (page + 1) + "&size=" + size;
        }
    }
}

Post title
Submission Date
Status
Resubmit Attempts left
Actions

@Test
public void givenMoreThanOnePage_whenGettingUserScheduledPosts_thenNextPageExist()
  throws ParseException, IOException {
    createPost();
    createPost();
    createPost();

    Response response = givenAuth().
      params("page", 0, "size", 2).get(urlPrefix + "/api/scheduledPosts");

    assertEquals(200, response.statusCode());
    assertTrue(response.as(List.class).size() > 0);

    String pagingInfo = response.getHeader("PAGING_INFO");
    long totalNoRecords = Long.parseLong(pagingInfo.split(",")[0].split("=")[1]);
    String uriToNextPage = pagingInfo.split(",")[2].replace("uriToNextPage=", "").trim();

    assertTrue(totalNoRecords > 2);
    assertEquals(uriToNextPage, "page=1&size=2");
}

@Test
public void givenMoreThanOnePage_whenGettingUserScheduledPostsForSecondPage_thenCorrect()
  throws ParseException, IOException {
    createPost();
    createPost();
    createPost();

    Response response = givenAuth().
      params("page", 1, "size", 2).get(urlPrefix + "/api/scheduledPosts");

    assertEquals(200, response.statusCode());
    assertTrue(response.as(List.class).size() > 0);

    String pagingInfo = response.getHeader("PAGING_INFO");
    long totalNoRecords = Long.parseLong(pagingInfo.split(",")[0].split("=")[1]);
    String uriToPrevPage = pagingInfo.split(",")[3].replace("uriToPrevPage=", "").trim();

    assertTrue(totalNoRecords > 2);
    assertEquals(uriToPrevPage, "page=0&size=2");
}

@Bean
public JavaMailSenderImpl javaMailSenderImpl() {
    JavaMailSenderImpl mailSenderImpl = new JavaMailSenderImpl();
    mailSenderImpl.setHost(env.getProperty("smtp.host"));
    mailSenderImpl.setPort(env.getProperty("smtp.port", Integer.class));
    mailSenderImpl.setProtocol(env.getProperty("smtp.protocol"));
    mailSenderImpl.setUsername(env.getProperty("smtp.username"));
    mailSenderImpl.setPassword(env.getProperty("smtp.password"));
    Properties javaMailProps = new Properties();
    javaMailProps.put("mail.smtp.auth", true);
    javaMailProps.put("mail.smtp.starttls.enable", true);
    mailSenderImpl.setJavaMailProperties(javaMailProps);
    return mailSenderImpl;
}

smtp.host=email-smtp.us-east-1.amazonaws.com
smtp.port=465
smtp.protocol=smtps
smtp.username=example
smtp.password=
[email protected]

private void updatePostFromResponse(JsonNode node, Post post) {
    JsonNode errorNode = node.get("json").get("errors").get(0);
    if (errorNode == null) {
        ...
        String email = post.getUser().getPreference().getEmail();
        eventPublisher.publishEvent(new OnPostSubmittedEvent(post, email));
    }
    ...
}

public class OnPostSubmittedEvent extends ApplicationEvent {
    private Post post;
    private String email;

    public OnPostSubmittedEvent(Post post, String email) {
        super(post);
        this.post = post;
        this.email = email;
    }
}

@Component
public class SubmissionListner implements ApplicationListener {
    @Autowired
    private JavaMailSender mailSender;

    @Autowired
    private Environment env;

    @Override
    public void onApplicationEvent(OnPostSubmittedEvent event) {
        SimpleMailMessage email = constructEmailMessage(event);
        mailSender.send(email);
    }

    private SimpleMailMessage constructEmailMessage(OnPostSubmittedEvent event) {
        String recipientAddress = event.getEmail();
        String subject = "Your scheduled post submitted";
        SimpleMailMessage email = new SimpleMailMessage();
        email.setTo(recipientAddress);
        email.setSubject(subject);
        email.setText(constructMailContent(event.getPost()));
        email.setFrom(env.getProperty("support.email"));
        return email;
    }

    private String constructMailContent(Post post) {
        return "Your post " + post.getTitle() + " is submitted.\n" +
          "http://www.reddit.com/r/" + post.getSubreddit() +
          "/comments/" + post.getRedditID();
    }
}

private boolean checkIfValidResubmitOptions(Post post) {
    if (checkIfAllNonZero(
          post.getNoOfAttempts(),
          post.getTimeInterval(),
          post.getMinScoreRequired())) {
        return true;
    } else {
        return false;
    }
}
private boolean checkIfAllNonZero(int... args) {
    for (int tmp : args) {
       if (tmp == 0) {
           return false;
        }
    }
    return true;
}

public Post schedulePost(boolean isSuperUser, Post post, boolean resubmitOptionsActivated)
  throws ParseException {
    if (resubmitOptionsActivated && !checkIfValidResubmitOptions(post)) {
        throw new InvalidResubmitOptionsException("Invalid Resubmit Options");
    }
    ...
}

@ExceptionHandler({ InvalidResubmitOptionsException.class })
public ResponseEntity