From 042f3ef55c0b469f438542152c4eb02b0789ea3c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Petr=20Mr=C3=A1zek?= <peterix@gmail.com>
Date: Sun, 14 Aug 2016 02:33:31 +0200
Subject: GH-352 Make OneSix instance update downloads cancellable

---
 .../minecraft/onesix/update/LibrariesTask.cpp      | 89 ++++++++++++++++++++++
 1 file changed, 89 insertions(+)
 create mode 100644 api/logic/minecraft/onesix/update/LibrariesTask.cpp

(limited to 'api/logic/minecraft/onesix/update/LibrariesTask.cpp')

diff --git a/api/logic/minecraft/onesix/update/LibrariesTask.cpp b/api/logic/minecraft/onesix/update/LibrariesTask.cpp
new file mode 100644
index 00000000..123b14a3
--- /dev/null
+++ b/api/logic/minecraft/onesix/update/LibrariesTask.cpp
@@ -0,0 +1,89 @@
+#include "Env.h"
+#include "LibrariesTask.h"
+#include "minecraft/onesix/OneSixInstance.h"
+
+LibrariesTask::LibrariesTask(OneSixInstance * inst)
+{
+	m_inst = inst;
+}
+
+void LibrariesTask::executeTask()
+{
+	setStatus(tr("Getting the library files from Mojang..."));
+	qDebug() << m_inst->name() << ": downloading libraries";
+	OneSixInstance *inst = (OneSixInstance *)m_inst;
+	inst->reloadProfile();
+	if(inst->flags() & BaseInstance::VersionBrokenFlag)
+	{
+		emitFailed(tr("Failed to load the version description files - check the instance for errors."));
+		return;
+	}
+
+	// Build a list of URLs that will need to be downloaded.
+	std::shared_ptr<MinecraftProfile> profile = inst->getMinecraftProfile();
+	// minecraft.jar for this version
+	{
+		QString version_id = profile->getMinecraftVersion();
+		QString localPath = version_id + "/" + version_id + ".jar";
+		QString urlstr = profile->getMainJarUrl();
+
+		auto job = new NetJob(tr("Libraries for instance %1").arg(inst->name()));
+
+		auto metacache = ENV.metacache();
+		auto entry = metacache->resolveEntry("versions", localPath);
+		job->addNetAction(Net::Download::makeCached(QUrl(urlstr), entry));
+		downloadJob.reset(job);
+	}
+
+	auto libs = profile->getLibraries();
+
+	auto metacache = ENV.metacache();
+	QList<LibraryPtr> brokenLocalLibs;
+	QStringList failedFiles;
+	for (auto lib : libs)
+	{
+		auto dls = lib->getDownloads(currentSystem, metacache.get(), failedFiles);
+		for(auto dl : dls)
+		{
+			downloadJob->addNetAction(dl);
+		}
+	}
+	// FIXME: this is never filled!!!!
+	if (!brokenLocalLibs.empty())
+	{
+		downloadJob.reset();
+		QString failed_all = failedFiles.join("\n");
+		emitFailed(tr("Some libraries marked as 'local' are missing their jar "
+					"files:\n%1\n\nYou'll have to correct this problem manually. If this is "
+					"an externally tracked instance, make sure to run it at least once "
+					"outside of MultiMC.").arg(failed_all));
+		return;
+	}
+	connect(downloadJob.get(), &NetJob::succeeded, this, &LibrariesTask::emitSucceeded);
+	connect(downloadJob.get(), &NetJob::failed, this, &LibrariesTask::jarlibFailed);
+	connect(downloadJob.get(), &NetJob::progress, this, &LibrariesTask::progress);
+	downloadJob->start();
+}
+
+bool LibrariesTask::canAbort() const
+{
+	return true;
+}
+
+void LibrariesTask::jarlibFailed(QString reason)
+{
+	emitFailed(tr("Game update failed: it was impossible to fetch the required libraries.\nReason:\n%1").arg(reason));
+}
+
+bool LibrariesTask::abort()
+{
+	if(downloadJob)
+	{
+		return downloadJob->abort();
+	}
+	else
+	{
+		qWarning() << "Prematurely aborted LibrariesTask";
+	}
+	return true;
+}
-- 
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