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-rw-r--r--api/logic/news/NewsChecker.cpp135
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diff --git a/api/logic/news/NewsChecker.cpp b/api/logic/news/NewsChecker.cpp
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+/* Copyright 2013-2015 MultiMC Contributors
+ *
+ * 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.
+ */
+
+#include "NewsChecker.h"
+
+#include <QByteArray>
+#include <QDomDocument>
+
+#include <QDebug>
+
+NewsChecker::NewsChecker(const QString& feedUrl)
+{
+ m_feedUrl = feedUrl;
+}
+
+void NewsChecker::reloadNews()
+{
+ // Start a netjob to download the RSS feed and call rssDownloadFinished() when it's done.
+ if (isLoadingNews())
+ {
+ qDebug() << "Ignored request to reload news. Currently reloading already.";
+ return;
+ }
+
+ qDebug() << "Reloading news.";
+
+ NetJob* job = new NetJob("News RSS Feed");
+ job->addNetAction(ByteArrayDownload::make(m_feedUrl));
+ QObject::connect(job, &NetJob::succeeded, this, &NewsChecker::rssDownloadFinished);
+ QObject::connect(job, &NetJob::failed, this, &NewsChecker::rssDownloadFailed);
+ m_newsNetJob.reset(job);
+ job->start();
+}
+
+void NewsChecker::rssDownloadFinished()
+{
+ // Parse the XML file and process the RSS feed entries.
+ qDebug() << "Finished loading RSS feed.";
+
+ QByteArray data;
+ {
+ ByteArrayDownloadPtr dl = std::dynamic_pointer_cast<ByteArrayDownload>(m_newsNetJob->first());
+ data = dl->m_data;
+ m_newsNetJob.reset();
+ }
+
+ QDomDocument doc;
+ {
+ // Stuff to store error info in.
+ QString errorMsg = "Unknown error.";
+ int errorLine = -1;
+ int errorCol = -1;
+
+ // Parse the XML.
+ if (!doc.setContent(data, false, &errorMsg, &errorLine, &errorCol))
+ {
+ QString fullErrorMsg = QString("Error parsing RSS feed XML. %s at %d:%d.").arg(errorMsg, errorLine, errorCol);
+ fail(fullErrorMsg);
+ return;
+ }
+ }
+
+ // If the parsing succeeded, read it.
+ QDomNodeList items = doc.elementsByTagName("item");
+ m_newsEntries.clear();
+ for (int i = 0; i < items.length(); i++)
+ {
+ QDomElement element = items.at(i).toElement();
+ NewsEntryPtr entry;
+ entry.reset(new NewsEntry());
+ QString errorMsg = "An unknown error occurred.";
+ if (NewsEntry::fromXmlElement(element, entry.get(), &errorMsg))
+ {
+ qDebug() << "Loaded news entry" << entry->title;
+ m_newsEntries.append(entry);
+ }
+ else
+ {
+ qWarning() << "Failed to load news entry at index" << i << ":" << errorMsg;
+ }
+ }
+
+ succeed();
+}
+
+void NewsChecker::rssDownloadFailed(QString reason)
+{
+ // Set an error message and fail.
+ fail(tr("Failed to load news RSS feed:\n%1").arg(reason));
+}
+
+
+QList<NewsEntryPtr> NewsChecker::getNewsEntries() const
+{
+ return m_newsEntries;
+}
+
+bool NewsChecker::isLoadingNews() const
+{
+ return m_newsNetJob.get() != nullptr;
+}
+
+QString NewsChecker::getLastLoadErrorMsg() const
+{
+ return m_lastLoadError;
+}
+
+void NewsChecker::succeed()
+{
+ m_lastLoadError = "";
+ qDebug() << "News loading succeeded.";
+ m_newsNetJob.reset();
+ emit newsLoaded();
+}
+
+void NewsChecker::fail(const QString& errorMsg)
+{
+ m_lastLoadError = errorMsg;
+ qDebug() << "Failed to load news:" << errorMsg;
+ m_newsNetJob.reset();
+ emit newsLoadingFailed(errorMsg);
+}
+