1 files changed, 155 insertions, 0 deletions
diff --git a/archived/projt-launcher/launcher/InstanceCreationTask.cpp b/archived/projt-launcher/launcher/InstanceCreationTask.cpp
new file mode 100644
index 0000000000..8bb0e20740
--- /dev/null
+++ b/archived/projt-launcher/launcher/InstanceCreationTask.cpp
@@ -0,0 +1,155 @@
+// SPDX-License-Identifier: GPL-3.0-only
+// SPDX-FileCopyrightText: 2026 Project Tick
+// SPDX-FileContributor: Project Tick Team
+/*
+ *  ProjT Launcher - Minecraft Launcher
+ *  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, version 3.
+ *
+ *  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, write to the Free Software Foundation,
+ *  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+#include "InstanceCreationTask.h"
+
+#include <QDebug>
+#include <QFile>
+
+#include "FileSystem.h"
+#include "minecraft/MinecraftLoadAndCheck.h"
+#include "tasks/SequentialTask.h"
+
+bool InstanceCreationTask::abort()
+{
+	if (!canAbort())
+		return false;
+
+	m_abort = true;
+	if (m_gameFilesTask)
+		return m_gameFilesTask->abort();
+
+	return true;
+}
+
+void InstanceCreationTask::executeTask()
+{
+	setAbortable(true);
+
+	if (updateInstance())
+	{
+		emitSucceeded();
+		return;
+	}
+
+	// When the user aborted in the update stage.
+	if (m_abort)
+	{
+		emitAborted();
+		return;
+	}
+
+	m_createdInstance = createInstance();
+	if (!m_createdInstance)
+	{
+		if (m_abort)
+			return;
+
+		qWarning() << "Instance creation failed!";
+		if (!m_error_message.isEmpty())
+		{
+			qWarning() << "Reason: " << m_error_message;
+			emitFailed(tr("Error while creating new instance:\n%1").arg(m_error_message));
+		}
+		else
+		{
+			emitFailed(tr("Error while creating new instance."));
+		}
+
+		return;
+	}
+
+	// If this is set, it means we're updating an instance. So, we now need to remove the
+	// files scheduled to, and we'd better not let the user abort in the middle of it, since it'd
+	// put the instance in an invalid state.
+	if (shouldOverride())
+	{
+		bool deleteFailed = false;
+
+		setAbortable(false);
+		setStatus(tr("Removing old conflicting files..."));
+		qDebug() << "Removing old files";
+
+		for (const QString& path : m_files_to_remove)
+		{
+			if (!QFile::exists(path))
+				continue;
+
+			qDebug() << "Removing" << path;
+
+			if (!QFile::remove(path))
+			{
+				qCritical() << "Could not remove" << path;
+				deleteFailed = true;
+			}
+		}
+
+		if (deleteFailed)
+		{
+			emitFailed(tr("Failed to remove old conflicting files."));
+			return;
+		}
+	}
+
+	if (m_abort)
+		return;
+
+	m_createdInstance->saveNow();
+
+	setAbortable(true);
+	setAbortButtonText(tr("Skip"));
+	qDebug() << "Downloading game files";
+
+	auto updateTasks = m_createdInstance->createUpdateTask();
+	if (updateTasks.isEmpty())
+	{
+		emitSucceeded();
+		return;
+	}
+
+	auto task = makeShared<SequentialTask>();
+	task->addTask(makeShared<MinecraftLoadAndCheck>(m_createdInstance.get(), Net::Mode::Online));
+	for (const auto& updateTask : updateTasks)
+	{
+		task->addTask(updateTask);
+	}
+	connect(task.get(),
+			&Task::finished,
+			this,
+			[this, task]
+			{
+				if (task->wasSuccessful() || m_abort)
+				{
+					emitSucceeded();
+				}
+				else
+				{
+					emitFailed(tr("Could not download game files: %1").arg(task->failReason()));
+				}
+			});
+	connect(task.get(), &Task::progress, this, &InstanceCreationTask::setProgress);
+	connect(task.get(), &Task::stepProgress, this, &InstanceCreationTask::propagateStepProgress);
+	connect(task.get(), &Task::status, this, &InstanceCreationTask::setStatus);
+	connect(task.get(), &Task::details, this, &InstanceCreationTask::setDetails);
+
+	setDetails(tr("Downloading game files"));
+	m_gameFilesTask = task;
+	m_gameFilesTask->start();
+}