Add 'meshmc/' from commit 'fad6a1066616b69d7f5fef01178efdf014c59537'

git-subtree-dir: meshmc
git-subtree-mainline: 934382c8a1ce738589dee9ee0f14e1cec812770e
git-subtree-split: fad6a1066616b69d7f5fef01178efdf014c59537

1 files changed, 158 insertions, 0 deletions

diff --git a/meshmc/launcher/news/NewsChecker.cpp b/meshmc/launcher/news/NewsChecker.cpp
new file mode 100644
index 0000000000..3990a83d80
--- /dev/null
+++ b/meshmc/launcher/news/NewsChecker.cpp
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+/* SPDX-FileCopyrightText: 2026 Project Tick
+ * SPDX-FileContributor: Project Tick
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ *   MeshMC - A Custom Launcher for Minecraft
+ *   Copyright (C) 2026 Project Tick
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ *  This file incorporates work covered by the following copyright and
+ *  permission notice:
+ *
+ * Copyright 2013-2021 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(shared_qobject_ptr<QNetworkAccessManager> network,
+						 const QString& feedUrl)
+{
+	m_network = network;
+	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", m_network);
+	job->addNetAction(Net::Download::makeByteArray(m_feedUrl, &newsData));
+	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.";
+
+	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(newsData, false, &errorMsg, &errorLine,
+							&errorCol)) {
+			QString fullErrorMsg =
+				QString("Error parsing RSS feed XML. %1 at %2:%3.")
+					.arg(errorMsg)
+					.arg(errorLine)
+					.arg(errorCol);
+			fail(fullErrorMsg);
+			newsData.clear();
+			return;
+		}
+		newsData.clear();
+	}
+
+	// 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);
+}