Java tutorial
/* * Copyright 1998-2017 Linux.org.ru * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package ru.org.linux.topic; import com.google.common.collect.ImmutableListMultimap; import com.google.common.collect.Lists; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import ru.org.linux.edithistory.EditInfoSummary; import ru.org.linux.gallery.Image; import ru.org.linux.gallery.ImageService; import ru.org.linux.group.Group; import ru.org.linux.group.GroupDao; import ru.org.linux.group.GroupPermissionService; import ru.org.linux.poll.Poll; import ru.org.linux.poll.PollNotFoundException; import ru.org.linux.poll.PollPrepareService; import ru.org.linux.poll.PreparedPoll; import ru.org.linux.section.Section; import ru.org.linux.section.SectionService; import ru.org.linux.site.DeleteInfo; import ru.org.linux.spring.SiteConfig; import ru.org.linux.spring.dao.DeleteInfoDao; import ru.org.linux.spring.dao.MessageText; import ru.org.linux.spring.dao.MsgbaseDao; import ru.org.linux.tag.TagRef; import ru.org.linux.user.*; import ru.org.linux.util.bbcode.LorCodeService; import scala.Option; import javax.annotation.Nonnull; import javax.annotation.Nullable; import java.util.ArrayList; import java.util.Date; import java.util.List; import java.util.Map; @Service public class TopicPrepareService { @Autowired private GroupDao groupDao; @Autowired private UserDao userDao; @Autowired private SectionService sectionService; @Autowired private DeleteInfoDao deleteInfoDao; @Autowired private PollPrepareService pollPrepareService; @Autowired private LorCodeService lorCodeService; @Autowired private SiteConfig siteConfig; @Autowired private TopicPermissionService topicPermissionService; @Autowired private GroupPermissionService groupPermissionService; @Autowired private MsgbaseDao msgbaseDao; @Autowired private ImageService imageService; @Autowired private UserService userService; @Autowired private TopicTagService topicTagService; @Autowired private RemarkDao remarkDao; public PreparedTopic prepareTopic(Topic message, boolean secure, User user) { return prepareMessage(message, topicTagService.getTagRefs(message), false, null, secure, user, msgbaseDao.getMessageText(message.getId()), null); } public PreparedTopic prepareTopic(Topic message, List<TagRef> tags, boolean secure, User user, MessageText text) { return prepareMessage(message, tags, false, null, secure, user, text, null); } public PreparedTopic prepareTopicPreview(Topic message, List<TagRef> tags, Poll newPoll, boolean secure, String text, Image image) { return prepareMessage(message, tags, false, newPoll != null ? pollPrepareService.preparePollPreview(newPoll) : null, secure, null, new MessageText(text, true), image); } public PreparedEditInfoSummary prepareEditInfo(EditInfoSummary editInfo) { String lastEditor = userDao.getUserCached(editInfo.editor()).getNick(); int editCount = editInfo.editCount(); Date lastEditDate = editInfo.editdate(); return PreparedEditInfoSummary.apply(lastEditor, editCount, lastEditDate); } /** * ? * @param message * @param tags ?? ? * @param minimizeCut ? cut * @param poll ? * @param secure ???? ? https * @param user * @return */ private PreparedTopic prepareMessage(Topic message, List<TagRef> tags, boolean minimizeCut, PreparedPoll poll, boolean secure, User user, MessageText text, @Nullable Image image) { try { Group group = groupDao.getGroup(message.getGroupId()); User author = userDao.getUserCached(message.getUid()); Section section = sectionService.getSection(message.getSectionId()); DeleteInfo deleteInfo; User deleteUser; if (message.isDeleted()) { deleteInfo = deleteInfoDao.getDeleteInfo(message.getId()); if (deleteInfo != null) { deleteUser = userDao.getUserCached(deleteInfo.getUserid()); } else { deleteUser = null; } } else { deleteInfo = null; deleteUser = null; } PreparedPoll preparedPoll; if (section.isPollPostAllowed()) { if (poll == null) { preparedPoll = pollPrepareService.preparePoll(message, user); } else { preparedPoll = poll; } } else { preparedPoll = null; } User commiter; if (message.getCommitby() != 0) { commiter = userDao.getUserCached(message.getCommitby()); } else { commiter = null; } String processedMessage; if (text.isLorcode()) { if (minimizeCut) { String url = siteConfig.getSecureUrlWithoutSlash() + message.getLink(); processedMessage = lorCodeService.parseTopicWithMinimizedCut(text.getText(), url, !topicPermissionService.followInTopic(message, author)); } else { processedMessage = lorCodeService.parseTopic(text.getText(), !topicPermissionService.followInTopic(message, author)); } } else { processedMessage = "<p>" + text.getText(); } PreparedImage preparedImage = null; if (section.isImagepost() || section.isImageAllowed()) { if (message.getId() != 0) { image = imageService.imageForTopic(message); } if (image != null) { Option<PreparedImage> maybeImage = imageService.prepareImage(image); if (maybeImage.isDefined()) { preparedImage = maybeImage.get(); } } } Remark remark = null; if (user != null) { Option<Remark> remarkOption = remarkDao.getRemark(user, author); if (remarkOption.isDefined()) { remark = remarkOption.get(); } } int postscore = topicPermissionService.getPostscore(group, message); return new PreparedTopic(message, author, deleteInfo, deleteUser, processedMessage, preparedPoll, commiter, tags, group, section, text.isLorcode(), preparedImage, TopicPermissionService.getPostScoreInfo(postscore), remark); } catch (PollNotFoundException e) { throw new RuntimeException(e); } } /** * ? ? * ?? ??? ? ? cut * @param messages ?? * @param secure ???? ? https * @param user * @param profile ? * @param loadUserpics * @return ?? */ public List<PersonalizedPreparedTopic> prepareMessagesForUser(List<Topic> messages, boolean secure, User user, Profile profile, boolean loadUserpics) { List<PersonalizedPreparedTopic> pm = new ArrayList<>(messages.size()); Map<Integer, MessageText> textMap = loadTexts(messages); ImmutableListMultimap<Integer, TagRef> tags = topicTagService.getTagRefs(messages); for (Topic message : messages) { PreparedTopic preparedMessage = prepareMessage(message, tags.get(message.getId()), true, null, secure, user, textMap.get(message.getId()), null); TopicMenu topicMenu = getTopicMenu(preparedMessage, user, profile, loadUserpics); pm.add(new PersonalizedPreparedTopic(preparedMessage, topicMenu)); } return pm; } private Map<Integer, MessageText> loadTexts(List<Topic> messages) { return msgbaseDao.getMessageText(Lists.transform(messages, Topic::getId)); } /** * , ??? TopicListController * ?? ??? ? ? cut * @param messages ?? * @param secure ???? ? https * @return ?? */ public List<PreparedTopic> prepareMessages(List<Topic> messages) { List<PreparedTopic> pm = new ArrayList<>(messages.size()); Map<Integer, MessageText> textMap = loadTexts(messages); ImmutableListMultimap<Integer, TagRef> tags = topicTagService.getTagRefs(messages); for (Topic message : messages) { PreparedTopic preparedMessage = prepareMessage(message, tags.get(message.getId()), true, null, true, null, textMap.get(message.getId()), null); pm.add(preparedMessage); } return pm; } @Nonnull public TopicMenu getTopicMenu(@Nonnull PreparedTopic message, @Nullable User currentUser, Profile profile, boolean loadUserpics) { boolean topicEditable = groupPermissionService.isEditable(message, currentUser); boolean tagsEditable = groupPermissionService.isTagsEditable(message, currentUser); boolean resolvable; boolean deletable; if (currentUser != null) { resolvable = (currentUser.isModerator() || (message.getAuthor().getId() == currentUser.getId())) && message.getGroup().isResolvable(); deletable = groupPermissionService.isDeletable(message.getMessage(), currentUser); } else { resolvable = false; deletable = false; } Userpic userpic = null; if (loadUserpics && profile.isShowPhotos()) { userpic = userService.getUserpic(message.getAuthor(), profile.getAvatarMode(), true); } return new TopicMenu(topicEditable, tagsEditable, resolvable, topicPermissionService.isCommentsAllowed(message.getGroup(), message.getMessage(), currentUser), deletable, userpic); } }