/*
* Copyright (c) 2009, 2010, 2011, 2012, B3log Team
*
* 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.solo.processor;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.b3log.latke.Keys;
import org.b3log.latke.action.AbstractAction;
import org.b3log.latke.annotation.RequestProcessing;
import org.b3log.latke.annotation.RequestProcessor;
import org.b3log.latke.service.LangPropsService;
import org.b3log.latke.servlet.HTTPRequestContext;
import org.b3log.latke.servlet.HTTPRequestMethod;
import org.b3log.latke.servlet.renderer.JSONRenderer;
import org.b3log.solo.model.Article;
import org.b3log.solo.model.Common;
import org.b3log.solo.model.Page;
import org.b3log.solo.service.CommentMgmtService;
import org.b3log.solo.util.Comments;
import org.json.JSONObject;
/**
* Comment processor.
*
* @author <a href="mailto:DL88250@gmail.com">Liang Ding</a>
* @version 1.1.0.6, Mar 28, 2012
* @since 0.3.1
*/
@RequestProcessor
public final class CommentProcessor {
/**
* Logger.
*/
private static final Logger LOGGER = Logger.getLogger(CommentProcessor.class.getName());
/**
* Language service.
*/
private static LangPropsService langPropsService = LangPropsService.getInstance();
/**
* Comment management service.
*/
private CommentMgmtService commentMgmtService = CommentMgmtService.getInstance();
/**
* Adds a comment to a page.
*
* <p>
* Renders the response with a json object, for example,
* <pre>
* {
* "oId": generatedCommentId,
* "sc": "COMMENT_PAGE_SUCC"
* "commentDate": "", // yyyy/MM/dd hh:mm:ss
* "commentSharpURL": "",
* "commentThumbnailURL": "",
* "commentOriginalCommentName": "" // if exists this key, the comment is an reply
* }
* </pre>
* </p>
*
* @param context the specified context,
* including a request json object, for example,
* <pre>
* {
* "captcha": "",
* "oId": pageId,
* "commentName": "",
* "commentEmail": "",
* "commentURL": "",
* "commentContent": "",
* "commentOriginalCommentId": "" // optional, if exists this key, the comment
* // is an reply
* }
* </pre>
* @throws ServletException servlet exception
* @throws IOException io exception
*/
@RequestProcessing(value = {"/add-page-comment.do"}, method = HTTPRequestMethod.POST)
public void addPageComment(final HTTPRequestContext context) throws ServletException, IOException {
final HttpServletRequest httpServletRequest = context.getRequest();
final HttpServletResponse httpServletResponse = context.getResponse();
final JSONObject requestJSONObject = AbstractAction.parseRequestJSONObject(httpServletRequest, httpServletResponse);
requestJSONObject.put(Common.TYPE, Page.PAGE);
final JSONObject jsonObject = Comments.checkAddCommentRequest(requestJSONObject);
final JSONRenderer renderer = new JSONRenderer();
context.setRenderer(renderer);
renderer.setJSONObject(jsonObject);
if (!jsonObject.optBoolean(Keys.STATUS_CODE)) {
LOGGER.log(Level.WARNING, "Can't add comment[msg={0}]", jsonObject.optString(Keys.MSG));
return;
}
final String captcha = requestJSONObject.optString(CaptchaProcessor.CAPTCHA);
final HttpSession session = httpServletRequest.getSession(false);
if (null != session) {
final String storedCaptcha = (String) session.getAttribute(CaptchaProcessor.CAPTCHA);
if (null == storedCaptcha || !storedCaptcha.equals(captcha)) {
jsonObject.put(Keys.STATUS_CODE, false);
jsonObject.put(Keys.MSG, langPropsService.get("captchaErrorLabel"));
return;
}
session.removeAttribute(CaptchaProcessor.CAPTCHA);
}
try {
final JSONObject addResult = commentMgmtService.addPageComment(requestJSONObject);
addResult.put(Keys.STATUS_CODE, true);
renderer.setJSONObject(addResult);
} catch (final Exception e) {
LOGGER.log(Level.SEVERE, "Can not add comment on page", e);
jsonObject.put(Keys.STATUS_CODE, false);
jsonObject.put(Keys.MSG, langPropsService.get("addFailLabel"));
}
}
/**
* Adds a comment to an article.
*
*
* <p>
* Renders the response with a json object, for example,
* <pre>
* {
* "oId": generatedCommentId,
* "sc": "COMMENT_ARTICLE_SUCC",
* "commentDate": "", // yyyy/MM/dd hh:mm:ss
* "commentSharpURL": "",
* "commentThumbnailURL": "",
* "commentOriginalCommentName": "" // if exists this key, the comment is an reply
* }
* </pre>
*
* @param context the specified context,
* including a request json object, for example,
* <pre>
* {
* "captcha": "",
* "oId": articleId,
* "commentName": "",
* "commentEmail": "",
* "commentURL": "",
* "commentContent": "",
* "commentOriginalCommentId": "" // optional, if exists this key, the comment
* // is an reply
* }
* </pre>
* @throws ServletException servlet exception
* @throws IOException io exception
*/
@RequestProcessing(value = {"/add-article-comment.do"}, method = HTTPRequestMethod.POST)
public void addArticleComment(final HTTPRequestContext context) throws ServletException, IOException {
final HttpServletRequest httpServletRequest = context.getRequest();
final HttpServletResponse httpServletResponse = context.getResponse();
final JSONObject requestJSONObject = AbstractAction.parseRequestJSONObject(httpServletRequest, httpServletResponse);
requestJSONObject.put(Common.TYPE, Article.ARTICLE);
final JSONObject jsonObject = Comments.checkAddCommentRequest(requestJSONObject);
final JSONRenderer renderer = new JSONRenderer();
context.setRenderer(renderer);
renderer.setJSONObject(jsonObject);
if (!jsonObject.optBoolean(Keys.STATUS_CODE)) {
LOGGER.log(Level.WARNING, "Can't add comment[msg={0}]", jsonObject.optString(Keys.MSG));
return;
}
final String captcha = requestJSONObject.optString(CaptchaProcessor.CAPTCHA);
final HttpSession session = httpServletRequest.getSession(false);
if (null != session) {
final String storedCaptcha = (String) session.getAttribute(CaptchaProcessor.CAPTCHA);
if (null == storedCaptcha || !storedCaptcha.equals(captcha)) {
jsonObject.put(Keys.STATUS_CODE, false);
jsonObject.put(Keys.MSG, langPropsService.get("captchaErrorLabel"));
return;
}
session.removeAttribute(CaptchaProcessor.CAPTCHA);
}
try {
final JSONObject addResult = commentMgmtService.addArticleComment(requestJSONObject);
addResult.put(Keys.STATUS_CODE, true);
renderer.setJSONObject(addResult);
} catch (final Exception e) {
LOGGER.log(Level.SEVERE, "Can not add comment on article", e);
jsonObject.put(Keys.STATUS_CODE, false);
jsonObject.put(Keys.MSG, langPropsService.get("addFailLabel"));
}
}
}