Java tutorial
/* * Copyright (c) 2012-2016, b3log.org & hacpai.com & fangstar.com * * 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 org.b3log.symphony.event; import java.util.Date; import java.util.Set; import javax.inject.Inject; import javax.inject.Named; import org.apache.commons.lang.time.DateFormatUtils; import org.b3log.latke.Keys; import org.b3log.latke.Latkes; import org.b3log.latke.event.AbstractEventListener; import org.b3log.latke.event.Event; import org.b3log.latke.event.EventException; import org.b3log.latke.logging.Level; import org.b3log.latke.logging.Logger; import org.b3log.latke.model.User; import org.b3log.latke.service.LangPropsService; import org.b3log.latke.service.ServiceException; import org.b3log.symphony.model.Article; import org.b3log.symphony.model.Comment; import org.b3log.symphony.model.Common; import org.b3log.symphony.model.Notification; import org.b3log.symphony.model.UserExt; import org.b3log.symphony.processor.channel.ArticleChannel; import org.b3log.symphony.processor.channel.ArticleListChannel; import org.b3log.symphony.service.AvatarQueryService; import org.b3log.symphony.service.NotificationMgmtService; import org.b3log.symphony.service.ShortLinkQueryService; import org.b3log.symphony.service.TimelineMgmtService; import org.b3log.symphony.service.UserQueryService; import org.b3log.symphony.util.Emotions; import org.b3log.symphony.util.Markdowns; import org.b3log.symphony.util.Symphonys; import org.json.JSONObject; import org.jsoup.Jsoup; /** * Sends a comment notification. * * @author <a href="http://88250.b3log.org">Liang Ding</a> * @version 1.4.4.12, Feb 26, 2016 * @since 0.2.0 */ @Named public class CommentNotifier extends AbstractEventListener<JSONObject> { /** * Logger. */ private static final Logger LOGGER = Logger.getLogger(CommentNotifier.class.getName()); /** * Notification management service. */ @Inject private NotificationMgmtService notificationMgmtService; /** * User query service. */ @Inject private UserQueryService userQueryService; /** * Avatar query service. */ @Inject private AvatarQueryService avatarQueryService; /** * Short link query service. */ @Inject private ShortLinkQueryService shortLinkQueryService; /** * Language service. */ @Inject private LangPropsService langPropsService; /** * Timeline management service. */ @Inject private TimelineMgmtService timelineMgmtService; @Override public void action(final Event<JSONObject> event) throws EventException { final JSONObject data = event.getData(); LOGGER.log(Level.DEBUG, "Processing an event[type={0}, data={1}] in listener[className={2}]", new Object[] { event.getType(), data, CommentNotifier.class.getName() }); try { final JSONObject originalArticle = data.getJSONObject(Article.ARTICLE); final JSONObject originalComment = data.getJSONObject(Comment.COMMENT); final String commentContent = originalComment.optString(Comment.COMMENT_CONTENT); final JSONObject commenter = userQueryService .getUser(originalComment.optString(Comment.COMMENT_AUTHOR_ID)); final String commenterName = commenter.optString(User.USER_NAME); // 0. Data channel (WebSocket) final JSONObject chData = new JSONObject(); chData.put(Article.ARTICLE_T_ID, originalArticle.optString(Keys.OBJECT_ID)); chData.put(Comment.COMMENT_T_ID, originalComment.optString(Keys.OBJECT_ID)); chData.put(Comment.COMMENT_T_AUTHOR_NAME, commenterName); final String userEmail = commenter.optString(User.USER_EMAIL); chData.put(Comment.COMMENT_T_AUTHOR_THUMBNAIL_URL, avatarQueryService.getAvatarURL(userEmail)); chData.put(Common.THUMBNAIL_UPDATE_TIME, commenter.optLong(UserExt.USER_UPDATE_TIME)); chData.put(Comment.COMMENT_CREATE_TIME, DateFormatUtils .format(new Date(originalComment.optLong(Comment.COMMENT_CREATE_TIME)), "yyyy-MM-dd HH:mm")); chData.put(Common.TIME_AGO, langPropsService.get("justNowLabel")); chData.put("thankLabel", langPropsService.get("thankLabel")); chData.put("thankedLabel", langPropsService.get("thankedLabel")); String thankTemplate = langPropsService.get("thankConfirmLabel"); thankTemplate = thankTemplate.replace("{point}", String.valueOf(Symphonys.getInt("pointThankComment"))) .replace("{user}", commenterName); chData.put(Comment.COMMENT_T_THANK_LABEL, thankTemplate); String cc = shortLinkQueryService.linkArticle(commentContent); cc = shortLinkQueryService.linkTag(cc); cc = Emotions.convert(cc); cc = Markdowns.toHTML(cc); cc = Markdowns.clean(cc, ""); try { final Set<String> userNames = userQueryService.getUserNames(commentContent); for (final String userName : userNames) { cc = cc.replace('@' + userName, "@<a href='" + Latkes.getServePath() + "/member/" + userName + "'>" + userName + "</a>"); } } catch (final ServiceException e) { LOGGER.log(Level.ERROR, "Generates @username home URL for comment content failed", e); } chData.put(Comment.COMMENT_CONTENT, cc); ArticleChannel.notifyComment(chData); // + Article Heat final JSONObject articleHeat = new JSONObject(); articleHeat.put(Article.ARTICLE_T_ID, originalArticle.optString(Keys.OBJECT_ID)); articleHeat.put(Common.OPERATION, "+"); ArticleListChannel.notifyHeat(articleHeat); ArticleChannel.notifyHeat(articleHeat); final boolean isDiscussion = originalArticle .optInt(Article.ARTICLE_TYPE) == Article.ARTICLE_TYPE_C_DISCUSSION; // Timeline if (!isDiscussion) { String articleTitle = Jsoup.parse(originalArticle.optString(Article.ARTICLE_TITLE)).text(); articleTitle = Emotions.convert(articleTitle); final String articlePermalink = Latkes.getServePath() + originalArticle.optString(Article.ARTICLE_PERMALINK); final JSONObject timeline = new JSONObject(); timeline.put(Common.TYPE, Comment.COMMENT); String content = langPropsService.get("timelineCommentLabel"); content = content .replace("{user}", "<a target='_blank' rel='nofollow' href='" + Latkes.getServePath() + "/member/" + commenterName + "'>" + commenterName + "</a>") .replace("{article}", "<a target='_blank' rel='nofollow' href='" + articlePermalink + "'>" + articleTitle + "</a>") .replace("{comment}", cc.replaceAll("<p>", "").replaceAll("</p>", "")); timeline.put(Common.CONTENT, content); timelineMgmtService.addTimeline(timeline); } // 1. 'Commented' Notification final String articleAuthorId = originalArticle.optString(Article.ARTICLE_AUTHOR_ID); final Set<String> atUserNames = userQueryService.getUserNames(commentContent); final boolean commenterIsArticleAuthor = articleAuthorId .equals(originalComment.optString(Comment.COMMENT_AUTHOR_ID)); if (commenterIsArticleAuthor && atUserNames.isEmpty()) { return; } atUserNames.remove(commenterName); // Do not notify commenter itself if (!commenterIsArticleAuthor) { final JSONObject requestJSONObject = new JSONObject(); requestJSONObject.put(Notification.NOTIFICATION_USER_ID, articleAuthorId); requestJSONObject.put(Notification.NOTIFICATION_DATA_ID, originalComment.optString(Keys.OBJECT_ID)); notificationMgmtService.addCommentedNotification(requestJSONObject); } final String articleContent = originalArticle.optString(Article.ARTICLE_CONTENT); final Set<String> articleContentAtUserNames = userQueryService.getUserNames(articleContent); // 2. 'At' Notification for (final String userName : atUserNames) { if (isDiscussion && !articleContentAtUserNames.contains(userName)) { continue; } final JSONObject user = userQueryService.getUserByName(userName); if (null == user) { LOGGER.log(Level.WARN, "Not found user by name [{0}]", userName); continue; } if (user.optString(Keys.OBJECT_ID).equals(articleAuthorId)) { continue; // Has added in step 1 } final JSONObject requestJSONObject = new JSONObject(); requestJSONObject.put(Notification.NOTIFICATION_USER_ID, user.optString(Keys.OBJECT_ID)); requestJSONObject.put(Notification.NOTIFICATION_DATA_ID, originalComment.optString(Keys.OBJECT_ID)); notificationMgmtService.addAtNotification(requestJSONObject); } } catch (final Exception e) { LOGGER.log(Level.ERROR, "Sends the comment notification failed", e); } } /** * Gets the event type {@linkplain EventTypes#ADD_COMMENT_TO_ARTICLE}. * * @return event type */ @Override public String getEventType() { return EventTypes.ADD_COMMENT_TO_ARTICLE; } }