Rework the update checking system

1 files changed, 93 insertions, 0 deletions

diff --git a/logic/updater/UpdateChecker.h b/logic/updater/UpdateChecker.h
new file mode 100644
index 00000000..829f7303
--- /dev/null
+++ b/logic/updater/UpdateChecker.h
@@ -0,0 +1,93 @@
+/* Copyright 2013 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.
+ */
+
+#pragma once
+
+#include "logic/net/NetJob.h"
+
+#include <QUrl>
+
+class UpdateChecker : public QObject
+{
+	Q_OBJECT
+
+public:
+signals:
+	//! Signal emitted when an update is available. Passes the URL for the repo and the ID and name for the version.
+	void updateAvailable(QString repoUrl, QString versionName, int versionId);
+
+private slots:
+	void updateCheckFinished();
+	void updateCheckFailed();
+
+	void chanListDownloadFinished();
+	void chanListDownloadFailed();
+
+public:
+	UpdateChecker();
+	void checkForUpdate();
+
+	/*!
+	 * Causes the update checker to download the channel list from the URL specified in config.h (generated by CMake).
+	 * If this isn't called before checkForUpdate(), it will automatically be called.
+	 */
+	void updateChanList();
+
+	/*!
+	 * An entry in the channel list.
+	 */
+	struct ChannelListEntry
+	{
+		QString id;
+		QString name;
+		QString description;
+		QString url;
+	};
+
+private:
+	NetJobPtr indexJob;
+	NetJobPtr chanListJob;
+
+	QString m_repoUrl;
+
+	QString m_channelListUrl;
+	QString m_currentChannel;
+
+	QList<ChannelListEntry> m_channels;
+
+	/*!
+	 * True while the system is checking for updates.
+	 * If checkForUpdate is called while this is true, it will be ignored.
+	 */
+	bool m_updateChecking;
+
+	/*!
+	 * True if the channel list has loaded.
+	 * If this is false, trying to check for updates will call updateChanList first.
+	 */
+	bool m_chanListLoaded;
+
+	/*!
+	 * Set to true while the channel list is currently loading.
+	 */
+	bool m_chanListLoading;
+
+	/*!
+	 * Set to true when checkForUpdate is called while the channel list isn't loaded.
+	 * When the channel list finishes loading, if this is true, the update checker will check for updates.
+	 */
+	bool m_checkUpdateWaiting;
+};
+