public ChatRoomDTO create(Token token, UserId userId, String chatRoomName)
throws ChatRoomAlreadyExistsException {
LOG.info(format("Creating chat-room \"%s.\"", chatRoomName));
if (chatRoomRepository.count() > 0 && chatRoomRepository.findByName(chatRoomName) != null) {
throw new ChatRoomAlreadyExistsException(format("ChatRoom %s already exists.", chatRoomName));
}
ChatRoom chatRoom = new ChatRoom(chatRoomName);
chatRoomRepository.save(chatRoom);
LOG.info(format("Chat-room \"%s\" created successfully.", chatRoom.getName()));
return new ChatRoomDTO(chatRoom.getId(), chatRoom.getName(), 0, 0);
}
@Override
public ArrayList<ChatRoomDTO> findByUserId(Token token, UserId userId) {
return chatRoomRepository
.findChatRoomsByUserId(userId.id)
.stream()
.map(chatRoom -> new ChatRoomDTO(chatRoom.getId(), chatRoom.getName(), 0, 0))
.collect(Collectors.toCollection(ArrayList<ChatRoomDTO>::new));
}
private ChatRoom getChatRoom(ChatRoomId chatRoomId) throws ChatRoomNotFoundException {
ChatRoom chatRoom = chatRoomRepository.findOne(chatRoomId.id);
if (chatRoom == null) {
throw new ChatRoomNotFoundException(
format("ChatRoom with this id [%d] not exists.", chatRoomId.id));
}
return chatRoom;
}
@Override
public ArrayList<ChatRoomDTO> findAll(Token token, UserId userId) {
Iterable<ChatRoom> chatRooms = chatRoomRepository.findAll();
ArrayList<ChatRoomDTO> chatRoomDTOs = new ArrayList<>();
for (ChatRoom chat : chatRooms) {
chatRoomDTOs.add(
new ChatRoomDTO(
chat.getId(), chat.getName(), chat.getUsers().size(), chat.getMessages().size()));
}
return chatRoomDTOs;
}