This is a part of an online Codename One course published around 2017 see it all for free at https://debugagent.com/series/cn1

1. Creating a WhatsApp Clone - Part XIII

2. @Service
public class UserService {
@Autowired
private UserRepository users;
@Autowired
private ChatGroupRepository groups;
@Autowired
private ChatMessageRepository messages;
@Autowired
private APIKeys keys;
@Autowired
private PasswordEncoder encoder;
@Autowired
private MediaRepository medias;
e
UserService

3. @Service
public class UserService {
@Autowired
private UserRepository users;
@Autowired
private ChatGroupRepository groups;
@Autowired
private ChatMessageRepository messages;
@Autowired
private APIKeys keys;
@Autowired
private PasswordEncoder encoder;
@Autowired
private MediaRepository medias;
e
UserService

4. @Service
public class UserService {
@Autowired
private UserRepository users;
@Autowired
private ChatGroupRepository groups;
@Autowired
private ChatMessageRepository messages;
@Autowired
private APIKeys keys;
@Autowired
private PasswordEncoder encoder;
@Autowired
private MediaRepository medias;
e
UserService

5. @Service
public class UserService {
@Autowired
private UserRepository users;
@Autowired
private ChatGroupRepository groups;
@Autowired
private ChatMessageRepository messages;
@Autowired
private APIKeys keys;
@Autowired
private PasswordEncoder encoder;
@Autowired
private MediaRepository medias;
e
UserService

6. @Autowired
private ChatGroupRepository groups;
@Autowired
private ChatMessageRepository messages;
@Autowired
private APIKeys keys;
@Autowired
private PasswordEncoder encoder;
@Autowired
private MediaRepository medias;
@Autowired
private NotificationService notifications;
private void sendActivationSMS(String number, String text) {
Twilio.init(keys.get("twilio.sid"), keys.get("twilio.auth"));
e
UserService

7. private PasswordEncoder encoder;
@Autowired
private MediaRepository medias;
@Autowired
private NotificationService notifications;
private void sendActivationSMS(String number, String text) {
Twilio.init(keys.get("twilio.sid"), keys.get("twilio.auth"));
Message message = Message
.creator(new PhoneNumber(number),
new PhoneNumber(keys.get("twilio.phone")),
text)
.create();
message.getSid();
}
public UserDAO login(String phone, String auth)
throws LoginException {
List<User> userList;
userList = users.findByPhone(phone);
e
UserService

8. new PhoneNumber(keys.get("twilio.phone")),
text)
.create();
message.getSid();
}
public UserDAO login(String phone, String auth)
throws LoginException {
List<User> userList;
userList = users.findByPhone(phone);
if (userList != null && userList.size() == 1) {
User u = userList.get(0);
if (encoder.matches(auth, u.getAuthtoken())) {
return u.getLoginDAO();
}
throw new LoginException("Authentication error!");
}
throw new LoginException("User not found!");
}
private String createVerificationCode(int length) {
StringBuilder k = new StringBuilder();
e
UserService

9. new PhoneNumber(keys.get("twilio.phone")),
text)
.create();
message.getSid();
}
public UserDAO login(String phone, String auth)
throws LoginException {
List<User> userList;
userList = users.findByPhone(phone);
if (userList != null && userList.size() == 1) {
User u = userList.get(0);
if (encoder.matches(auth, u.getAuthtoken())) {
return u.getLoginDAO();
}
throw new LoginException("Authentication error!");
}
throw new LoginException("User not found!");
}
private String createVerificationCode(int length) {
StringBuilder k = new StringBuilder();
e
UserService

10. new PhoneNumber(keys.get("twilio.phone")),
text)
.create();
message.getSid();
}
public UserDAO login(String phone, String auth)
throws LoginException {
List<User> userList;
userList = users.findByPhone(phone);
if (userList != null && userList.size() == 1) {
User u = userList.get(0);
if (encoder.matches(auth, u.getAuthtoken())) {
return u.getLoginDAO();
}
throw new LoginException("Authentication error!");
}
throw new LoginException("User not found!");
}
private String createVerificationCode(int length) {
StringBuilder k = new StringBuilder();
e
UserService

11. if (encoder.matches(auth, u.getAuthtoken())) {
return u.getLoginDAO();
}
throw new LoginException("Authentication error!");
}
throw new LoginException("User not found!");
}
private String createVerificationCode(int length) {
StringBuilder k = new StringBuilder();
Random r = new Random();
for (int iter = 0; iter < length; iter++) {
k.append(r.nextInt(10));
}
return k.toString();
}
public UserDAO signup(UserDAO user) throws SignupException {
List<User> ul = users.findByPhone(user.getPhone());
if (ul != null && ul.size() > 0) {
throw new SignupException(
e
UserService

12. }
public UserDAO signup(UserDAO user) throws SignupException {
List<User> ul = users.findByPhone(user.getPhone());
if (ul != null && ul.size() > 0) {
throw new SignupException(
"The phone number is already registered!");
}
User u = new User();
setProps(user, u);
u.setAuthtoken(UUID.randomUUID().toString());
u.setVerificationCode(createVerificationCode(4));
users.save(u);
sendActivationSMS(user.getPhone(), "Activation key: " + u.
getVerificationCode());
return u.getLoginDAO();
}
e
UserService

13. }
public UserDAO signup(UserDAO user) throws SignupException {
List<User> ul = users.findByPhone(user.getPhone());
if (ul != null && ul.size() > 0) {
throw new SignupException(
"The phone number is already registered!");
}
User u = new User();
setProps(user, u);
u.setAuthtoken(UUID.randomUUID().toString());
u.setVerificationCode(createVerificationCode(4));
users.save(u);
sendActivationSMS(user.getPhone(), "Activation key: " + u.
getVerificationCode());
return u.getLoginDAO();
}
e
UserService

14. }
public UserDAO signup(UserDAO user) throws SignupException {
List<User> ul = users.findByPhone(user.getPhone());
if (ul != null && ul.size() > 0) {
throw new SignupException(
"The phone number is already registered!");
}
User u = new User();
setProps(user, u);
u.setAuthtoken(UUID.randomUUID().toString());
u.setVerificationCode(createVerificationCode(4));
users.save(u);
sendActivationSMS(user.getPhone(), "Activation key: " + u.
getVerificationCode());
return u.getLoginDAO();
}
e
UserService

15. }
public UserDAO signup(UserDAO user) throws SignupException {
List<User> ul = users.findByPhone(user.getPhone());
if (ul != null && ul.size() > 0) {
throw new SignupException(
"The phone number is already registered!");
}
User u = new User();
setProps(user, u);
u.setAuthtoken(UUID.randomUUID().toString());
u.setVerificationCode(createVerificationCode(4));
users.save(u);
sendActivationSMS(user.getPhone(), "Activation key: " + u.
getVerificationCode());
return u.getLoginDAO();
}
e
UserService

16. sendActivationSMS(user.getPhone(), "Activation key: " + u.
getVerificationCode());
return u.getLoginDAO();
}
public boolean verifyPhone(String userId, String code) {
User u = users.findById(userId).get();
if (u.getVerificationCode().equals(code)) {
u.setVerificationCode(null);
u.setVerified(true);
users.save(u);
return true;
}
return false;
}
private void setProps(UserDAO user, User u) {
u.setName(user.getName());
u.setTagline(user.getTagline());
}
e
UserService

17. sendActivationSMS(user.getPhone(), "Activation key: " + u.
getVerificationCode());
return u.getLoginDAO();
}
public boolean verifyPhone(String userId, String code) {
User u = users.findById(userId).get();
if (u.getVerificationCode().equals(code)) {
u.setVerificationCode(null);
u.setVerified(true);
users.save(u);
return true;
}
return false;
}
private void setProps(UserDAO user, User u) {
u.setName(user.getName());
u.setTagline(user.getTagline());
}
e
UserService

18. private void setProps(UserDAO user, User u) {
u.setName(user.getName());
u.setTagline(user.getTagline());
}
public void update(String auth, UserDAO user) {
User u = users.findById(user.getId()).get();
if (encoder.matches(auth, u.getAuthtoken())) {
setProps(user, u);
users.save(u);
}
}
public byte[] getAvatar(String userId) {
User u = users.findById(userId).get();
if (u.getAvatar() != null) {
return u.getAvatar().getData();
}
return null;
}
e
UserService

19. users.save(u);
}
}
public byte[] getAvatar(String userId) {
User u = users.findById(userId).get();
if (u.getAvatar() != null) {
return u.getAvatar().getData();
}
return null;
}
public void setAvatar(String auth, String userId, String mediaId) {
Media m = medias.findById(mediaId).get();
User u = users.findById(userId).get();
if (encoder.matches(auth, u.getAuthtoken())) {
u.setAvatar(m);
users.save(u);
}
}
public void userTyping(String userId, String toUser, boolean t) {
e
UserService

20. User u = users.findById(userId).get();
if (encoder.matches(auth, u.getAuthtoken())) {
u.setAvatar(m);
users.save(u);
}
}
public void userTyping(String userId, String toUser, boolean t) {
Optional<User> to = users.findById(toUser);
if(to.isPresent()) {
AppSocket.sendUserTyping(to.get().getAuthtoken(), userId, t);
} else {
ChatGroup g = groups.findById(toUser).get();
for(User u : g.getMembers()) {
AppSocket.sendUserTyping(u.getAuthtoken(), userId, t);
}
}
}
public MessageDAO sendMessage(MessageDAO m) {
ChatMessage cm = new ChatMessage();
cm.setAuthor(users.findById(m.getAuthorId()).get());
e
UserService

21. User u = users.findById(userId).get();
if (encoder.matches(auth, u.getAuthtoken())) {
u.setAvatar(m);
users.save(u);
}
}
public void userTyping(String userId, String toUser, boolean t) {
Optional<User> to = users.findById(toUser);
if(to.isPresent()) {
AppSocket.sendUserTyping(to.get().getAuthtoken(), userId, t);
} else {
ChatGroup g = groups.findById(toUser).get();
for(User u : g.getMembers()) {
AppSocket.sendUserTyping(u.getAuthtoken(), userId, t);
}
}
}
public MessageDAO sendMessage(MessageDAO m) {
ChatMessage cm = new ChatMessage();
cm.setAuthor(users.findById(m.getAuthorId()).get());
e
UserService

22. User u = users.findById(userId).get();
if (encoder.matches(auth, u.getAuthtoken())) {
u.setAvatar(m);
users.save(u);
}
}
public void userTyping(String userId, String toUser, boolean t) {
Optional<User> to = users.findById(toUser);
if(to.isPresent()) {
AppSocket.sendUserTyping(to.get().getAuthtoken(), userId, t);
} else {
ChatGroup g = groups.findById(toUser).get();
for(User u : g.getMembers()) {
AppSocket.sendUserTyping(u.getAuthtoken(), userId, t);
}
}
}
public MessageDAO sendMessage(MessageDAO m) {
ChatMessage cm = new ChatMessage();
cm.setAuthor(users.findById(m.getAuthorId()).get());
e
UserService

23. User u = users.findById(userId).get();
if (encoder.matches(auth, u.getAuthtoken())) {
u.setAvatar(m);
users.save(u);
}
}
public void userTyping(String userId, String toUser, boolean t) {
Optional<User> to = users.findById(toUser);
if(to.isPresent()) {
AppSocket.sendUserTyping(to.get().getAuthtoken(), userId, t);
} else {
ChatGroup g = groups.findById(toUser).get();
for(User u : g.getMembers()) {
AppSocket.sendUserTyping(u.getAuthtoken(), userId, t);
}
}
}
public MessageDAO sendMessage(MessageDAO m) {
ChatMessage cm = new ChatMessage();
cm.setAuthor(users.findById(m.getAuthorId()).get());
e
UserService

24. }
}
public MessageDAO sendMessage(MessageDAO m) {
ChatMessage cm = new ChatMessage();
cm.setAuthor(users.findById(m.getAuthorId()).get());
cm.setBody(m.getBody());
cm.setMessageTime(new Date());
Optional<User> to = users.findById(m.getSentTo());
if(to.isPresent()) {
cm.setSentTo(to.get());
String json = createMessageImpl(m.getSentTo(), cm);
User usr = to.get();
sendMessageImpl(usr.getAuthtoken(), usr.getPushKey(), json,
m.getBody());
} else {
ChatGroup g = groups.findById(m.getSentTo()).get();
cm.setSentToGroup(g);
String json = createMessageImpl(m.getSentTo(), cm);
for(User u : g.getMembers()) {
sendMessageImpl(u.getAuthtoken(), u.getPushKey(), json,
e
UserService

25. }
}
public MessageDAO sendMessage(MessageDAO m) {
ChatMessage cm = new ChatMessage();
cm.setAuthor(users.findById(m.getAuthorId()).get());
cm.setBody(m.getBody());
cm.setMessageTime(new Date());
Optional<User> to = users.findById(m.getSentTo());
if(to.isPresent()) {
cm.setSentTo(to.get());
String json = createMessageImpl(m.getSentTo(), cm);
User usr = to.get();
sendMessageImpl(usr.getAuthtoken(), usr.getPushKey(), json,
m.getBody());
} else {
ChatGroup g = groups.findById(m.getSentTo()).get();
cm.setSentToGroup(g);
String json = createMessageImpl(m.getSentTo(), cm);
for(User u : g.getMembers()) {
sendMessageImpl(u.getAuthtoken(), u.getPushKey(), json,
e
UserService

26. }
}
public MessageDAO sendMessage(MessageDAO m) {
ChatMessage cm = new ChatMessage();
cm.setAuthor(users.findById(m.getAuthorId()).get());
cm.setBody(m.getBody());
cm.setMessageTime(new Date());
Optional<User> to = users.findById(m.getSentTo());
if(to.isPresent()) {
cm.setSentTo(to.get());
String json = createMessageImpl(m.getSentTo(), cm);
User usr = to.get();
sendMessageImpl(usr.getAuthtoken(), usr.getPushKey(), json,
m.getBody());
} else {
ChatGroup g = groups.findById(m.getSentTo()).get();
cm.setSentToGroup(g);
String json = createMessageImpl(m.getSentTo(), cm);
for(User u : g.getMembers()) {
sendMessageImpl(u.getAuthtoken(), u.getPushKey(), json,
e
UserService

27. public MessageDAO sendMessage(MessageDAO m) {
ChatMessage cm = new ChatMessage();
cm.setAuthor(users.findById(m.getAuthorId()).get());
cm.setBody(m.getBody());
cm.setMessageTime(new Date());
Optional<User> to = users.findById(m.getSentTo());
if(to.isPresent()) {
cm.setSentTo(to.get());
String json = createMessageImpl(m.getSentTo(), cm);
User usr = to.get();
sendMessageImpl(usr.getAuthtoken(), usr.getPushKey(), json,
m.getBody());
} else {
ChatGroup g = groups.findById(m.getSentTo()).get();
cm.setSentToGroup(g);
String json = createMessageImpl(m.getSentTo(), cm);
for(User u : g.getMembers()) {
sendMessageImpl(u.getAuthtoken(), u.getPushKey(), json,
m.getBody());
}
}
return cm.getDAO();
}
e
UserService

28. public MessageDAO sendMessage(MessageDAO m) {
ChatMessage cm = new ChatMessage();
cm.setAuthor(users.findById(m.getAuthorId()).get());
cm.setBody(m.getBody());
cm.setMessageTime(new Date());
Optional<User> to = users.findById(m.getSentTo());
if(to.isPresent()) {
cm.setSentTo(to.get());
String json = createMessageImpl(m.getSentTo(), cm);
User usr = to.get();
sendMessageImpl(usr.getAuthtoken(), usr.getPushKey(), json,
m.getBody());
} else {
ChatGroup g = groups.findById(m.getSentTo()).get();
cm.setSentToGroup(g);
String json = createMessageImpl(m.getSentTo(), cm);
for(User u : g.getMembers()) {
sendMessageImpl(u.getAuthtoken(), u.getPushKey(), json,
m.getBody());
}
}
return cm.getDAO();
}
e
UserService

29. public MessageDAO sendMessage(MessageDAO m) {
ChatMessage cm = new ChatMessage();
cm.setAuthor(users.findById(m.getAuthorId()).get());
cm.setBody(m.getBody());
cm.setMessageTime(new Date());
Optional<User> to = users.findById(m.getSentTo());
if(to.isPresent()) {
cm.setSentTo(to.get());
String json = createMessageImpl(m.getSentTo(), cm);
User usr = to.get();
sendMessageImpl(usr.getAuthtoken(), usr.getPushKey(), json,
m.getBody());
} else {
ChatGroup g = groups.findById(m.getSentTo()).get();
cm.setSentToGroup(g);
String json = createMessageImpl(m.getSentTo(), cm);
for(User u : g.getMembers()) {
sendMessageImpl(u.getAuthtoken(), u.getPushKey(), json,
m.getBody());
}
}
return cm.getDAO();
}
e
UserService

30. for(User u : g.getMembers()) {
sendMessageImpl(u.getAuthtoken(), u.getPushKey(), json,
m.getBody());
}
}
return cm.getDAO();
}
private void sendMessageImpl(String authToken, String pushKey,
String json, String message) {
if(!AppSocket.sendMessage(authToken, json)) {
notifications.sendPushNotification(pushKey, message, 1);
}
}
public void sendMessage(String toUser,
Map<String, Object> parsedJSON) {
ChatMessage cm = new ChatMessage();
cm.setAuthor(users.findById((String)parsedJSON.get("authorId")).
get());
cm.setBody((String)parsedJSON.get("body"));
cm.setMessageTime(new Date());
e
UserService

31. for(User u : g.getMembers()) {
sendMessageImpl(u.getAuthtoken(), u.getPushKey(), json,
m.getBody());
}
}
return cm.getDAO();
}
private void sendMessageImpl(String authToken, String pushKey,
String json, String message) {
if(!AppSocket.sendMessage(authToken, json)) {
notifications.sendPushNotification(pushKey, message, 1);
}
}
public void sendMessage(String toUser,
Map<String, Object> parsedJSON) {
ChatMessage cm = new ChatMessage();
cm.setAuthor(users.findById((String)parsedJSON.get("authorId")).
get());
cm.setBody((String)parsedJSON.get("body"));
cm.setMessageTime(new Date());
e
UserService

32. }
}
public void sendMessage(String toUser,
Map<String, Object> parsedJSON) {
ChatMessage cm = new ChatMessage();
cm.setAuthor(users.findById((String)parsedJSON.get("authorId")).
get());
cm.setBody((String)parsedJSON.get("body"));
cm.setMessageTime(new Date());
Optional<User> to = users.findById(toUser);
if(to.isPresent()) {
cm.setSentTo(to.get());
String json = createMessageImpl(toUser, cm);
User usr = to.get();
sendMessageImpl(usr.getAuthtoken(), usr.getPushKey(),
json, cm.getBody());
} else {
ChatGroup g = groups.findById(toUser).get();
cm.setSentToGroup(g);
String json = createMessageImpl(toUser, cm);
for(User u : g.getMembers()) {
e
UserService

33. String json = createMessageImpl(toUser, cm);
for(User u : g.getMembers()) {
sendMessageImpl(u.getAuthtoken(), u.getPushKey(),
json, cm.getBody());
}
}
}
private String createMessageImpl(String toUser, ChatMessage cm) {
cm = messages.save(cm);
ObjectMapper objectMapper = new ObjectMapper();
try {
String dao = objectMapper.writeValueAsString(cm.getDAO());
return dao;
} catch(JsonProcessingException err) {
throw new RuntimeException(err);
}
}
public void sendJSONTo(String toUser, String json) {
Optional<User> to = users.findById(toUser);
if(to.isPresent()) {
e
UserService

34. String json = createMessageImpl(toUser, cm);
for(User u : g.getMembers()) {
sendMessageImpl(u.getAuthtoken(), u.getPushKey(),
json, cm.getBody());
}
}
}
private String createMessageImpl(String toUser, ChatMessage cm) {
cm = messages.save(cm);
ObjectMapper objectMapper = new ObjectMapper();
try {
String dao = objectMapper.writeValueAsString(cm.getDAO());
return dao;
} catch(JsonProcessingException err) {
throw new RuntimeException(err);
}
}
public void sendJSONTo(String toUser, String json) {
Optional<User> to = users.findById(toUser);
if(to.isPresent()) {
e
UserService

35. return dao;
} catch(JsonProcessingException err) {
throw new RuntimeException(err);
}
}
public void sendJSONTo(String toUser, String json) {
Optional<User> to = users.findById(toUser);
if(to.isPresent()) {
AppSocket.sendMessage(to.get().getAuthtoken(), json);
} else {
ChatGroup g = groups.findById(toUser).get();
for(User u : g.getMembers()) {
AppSocket.sendMessage(u.getAuthtoken(), json);
}
}
}
public UserDAO findRegisteredUser(String phone) {
return fromList(users.findByPhone(phone));
}
e
UserService

36. AppSocket.sendMessage(u.getAuthtoken(), json);
}
}
}
public UserDAO findRegisteredUser(String phone) {
return fromList(users.findByPhone(phone));
}
private UserDAO fromList(List<User> ul) {
if(ul.isEmpty()) {
return null;
}
User u = ul.get(0);
if(!u.isVerified()) {
return null;
}
return u.getDAO();
}
public UserDAO findRegisteredUserById(String id) {
return users.findById(id).get().getDAO();
e
UserService

37. AppSocket.sendMessage(u.getAuthtoken(), json);
}
}
}
public UserDAO findRegisteredUser(String phone) {
return fromList(users.findByPhone(phone));
}
private UserDAO fromList(List<User> ul) {
if(ul.isEmpty()) {
return null;
}
User u = ul.get(0);
if(!u.isVerified()) {
return null;
}
return u.getDAO();
}
public UserDAO findRegisteredUserById(String id) {
return users.findById(id).get().getDAO();
e
UserService

38. public UserDAO findRegisteredUserById(String id) {
return users.findById(id).get().getDAO();
}
public void ackMessage(String id) {
ChatMessage m = messages.findById(id).get();
m.setAck(true);
messages.save(m);
}
public void sendUnAckedMessages(String toUser) {
List<ChatMessage> mess = messages.findByUnAcked(toUser);
for(ChatMessage m : mess) {
sendMessage(m.getDAO());
}
}
public void updatePushKey(String auth, String id, String key) {
User u = users.findById(auth).get();
if (encoder.matches(auth, u.getAuthtoken())) {
u.setPushKey(key);
users.save(u);
e
UserService

39. public UserDAO findRegisteredUserById(String id) {
return users.findById(id).get().getDAO();
}
public void ackMessage(String id) {
ChatMessage m = messages.findById(id).get();
m.setAck(true);
messages.save(m);
}
public void sendUnAckedMessages(String toUser) {
List<ChatMessage> mess = messages.findByUnAcked(toUser);
for(ChatMessage m : mess) {
sendMessage(m.getDAO());
}
}
public void updatePushKey(String auth, String id, String key) {
User u = users.findById(auth).get();
if (encoder.matches(auth, u.getAuthtoken())) {
u.setPushKey(key);
users.save(u);
e
UserService

40. public void ackMessage(String id) {
ChatMessage m = messages.findById(id).get();
m.setAck(true);
messages.save(m);
}
public void sendUnAckedMessages(String toUser) {
List<ChatMessage> mess = messages.findByUnAcked(toUser);
for(ChatMessage m : mess) {
sendMessage(m.getDAO());
}
}
public void updatePushKey(String auth, String id, String key) {
User u = users.findById(auth).get();
if (encoder.matches(auth, u.getAuthtoken())) {
u.setPushKey(key);
users.save(u);
}
}
}
e
UserService