1 files changed, 236 insertions, 0 deletions
diff --git a/meshmc/launcher/modplatform/technic/SolderPackInstallTask.cpp b/meshmc/launcher/modplatform/technic/SolderPackInstallTask.cpp
new file mode 100644
index 0000000000..e5943ffdd4
--- /dev/null
+++ b/meshmc/launcher/modplatform/technic/SolderPackInstallTask.cpp
@@ -0,0 +1,236 @@
+/* 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 "SolderPackInstallTask.h"
+
+#include <FileSystem.h>
+#include <Json.h>
+#include <QtConcurrentRun>
+#include <MMCZip.h>
+#include "TechnicPackProcessor.h"
+
+Technic::SolderPackInstallTask::SolderPackInstallTask(
+	shared_qobject_ptr<QNetworkAccessManager> network, const QUrl& sourceUrl,
+	const QString& minecraftVersion)
+{
+	m_sourceUrl = sourceUrl;
+	m_minecraftVersion = minecraftVersion;
+	m_network = network;
+}
+
+bool Technic::SolderPackInstallTask::abort()
+{
+	if (m_abortable) {
+		return m_filesNetJob->abort();
+	}
+	return false;
+}
+
+void Technic::SolderPackInstallTask::executeTask()
+{
+	setStatus(
+		tr("Finding recommended version:\n%1").arg(m_sourceUrl.toString()));
+	m_filesNetJob = new NetJob(tr("Finding recommended version"), m_network);
+	m_filesNetJob->addNetAction(
+		Net::Download::makeByteArray(m_sourceUrl, &m_response));
+	auto job = m_filesNetJob.get();
+	connect(job, &NetJob::succeeded, this,
+			&Technic::SolderPackInstallTask::versionSucceeded);
+	connect(job, &NetJob::failed, this,
+			&Technic::SolderPackInstallTask::downloadFailed);
+	m_filesNetJob->start();
+}
+
+void Technic::SolderPackInstallTask::versionSucceeded()
+{
+	try {
+		QJsonDocument doc = Json::requireDocument(m_response);
+		QJsonObject obj = Json::requireObject(doc);
+		QString version =
+			Json::requireString(obj, "recommended", "__placeholder__");
+		m_sourceUrl = m_sourceUrl.toString() + '/' + version;
+	} catch (const JSONValidationError& e) {
+		emitFailed(e.cause());
+		m_filesNetJob.reset();
+		return;
+	}
+
+	setStatus(tr("Resolving modpack files:\n%1").arg(m_sourceUrl.toString()));
+	m_filesNetJob = new NetJob(tr("Resolving modpack files"), m_network);
+	m_filesNetJob->addNetAction(
+		Net::Download::makeByteArray(m_sourceUrl, &m_response));
+	auto job = m_filesNetJob.get();
+	connect(job, &NetJob::succeeded, this,
+			&Technic::SolderPackInstallTask::fileListSucceeded);
+	connect(job, &NetJob::failed, this,
+			&Technic::SolderPackInstallTask::downloadFailed);
+	m_filesNetJob->start();
+}
+
+void Technic::SolderPackInstallTask::fileListSucceeded()
+{
+	setStatus(tr("Downloading modpack:"));
+	QStringList modUrls;
+	try {
+		QJsonDocument doc = Json::requireDocument(m_response);
+		QJsonObject obj = Json::requireObject(doc);
+		QString minecraftVersion =
+			Json::ensureString(obj, "minecraft", QString(), "__placeholder__");
+		if (!minecraftVersion.isEmpty())
+			m_minecraftVersion = minecraftVersion;
+		QJsonArray mods = Json::requireArray(obj, "mods", "'mods'");
+		for (auto mod : mods) {
+			QJsonObject modObject = Json::requireObject(mod);
+			modUrls.append(Json::requireString(modObject, "url", "'url'"));
+		}
+	} catch (const JSONValidationError& e) {
+		emitFailed(e.cause());
+		m_filesNetJob.reset();
+		return;
+	}
+	m_filesNetJob = new NetJob(tr("Downloading modpack"), m_network);
+	int i = 0;
+	for (auto& modUrl : modUrls) {
+		auto path = FS::PathCombine(m_outputDir.path(), QString("%1").arg(i));
+		m_filesNetJob->addNetAction(Net::Download::makeFile(modUrl, path));
+		i++;
+	}
+
+	m_modCount = modUrls.size();
+
+	connect(m_filesNetJob.get(), &NetJob::succeeded, this,
+			&Technic::SolderPackInstallTask::downloadSucceeded);
+	connect(m_filesNetJob.get(), &NetJob::progress, this,
+			&Technic::SolderPackInstallTask::downloadProgressChanged);
+	connect(m_filesNetJob.get(), &NetJob::failed, this,
+			&Technic::SolderPackInstallTask::downloadFailed);
+	m_filesNetJob->start();
+}
+
+void Technic::SolderPackInstallTask::downloadSucceeded()
+{
+	m_abortable = false;
+
+	setStatus(tr("Extracting modpack"));
+	m_filesNetJob.reset();
+	m_extractFuture = QtConcurrent::run([this]() {
+		int i = 0;
+		QString extractDir = FS::PathCombine(m_stagingPath, ".minecraft");
+		FS::ensureFolderPathExists(extractDir);
+
+		while (m_modCount > i) {
+			auto path =
+				FS::PathCombine(m_outputDir.path(), QString("%1").arg(i));
+			if (!MMCZip::extractDir(path, extractDir)) {
+				return false;
+			}
+			i++;
+		}
+		return true;
+	});
+	connect(&m_extractFutureWatcher, &QFutureWatcher<QStringList>::finished,
+			this, &Technic::SolderPackInstallTask::extractFinished);
+	connect(&m_extractFutureWatcher, &QFutureWatcher<QStringList>::canceled,
+			this, &Technic::SolderPackInstallTask::extractAborted);
+	m_extractFutureWatcher.setFuture(m_extractFuture);
+}
+
+void Technic::SolderPackInstallTask::downloadFailed(QString reason)
+{
+	m_abortable = false;
+	emitFailed(reason);
+	m_filesNetJob.reset();
+}
+
+void Technic::SolderPackInstallTask::downloadProgressChanged(qint64 current,
+															 qint64 total)
+{
+	m_abortable = true;
+	setProgress(current / 2, total);
+}
+
+void Technic::SolderPackInstallTask::extractFinished()
+{
+	if (!m_extractFuture.result()) {
+		emitFailed(tr("Failed to extract modpack"));
+		return;
+	}
+	QDir extractDir(m_stagingPath);
+
+	qDebug() << "Fixing permissions for extracted pack files...";
+	QDirIterator it(extractDir, QDirIterator::Subdirectories);
+	while (it.hasNext()) {
+		auto filepath = it.next();
+		QFileInfo file(filepath);
+		auto permissions = QFile::permissions(filepath);
+		auto origPermissions = permissions;
+		if (file.isDir()) {
+			// Folder +rwx for current user
+			permissions |= QFileDevice::Permission::ReadUser |
+						   QFileDevice::Permission::WriteUser |
+						   QFileDevice::Permission::ExeUser;
+		} else {
+			// File +rw for current user
+			permissions |= QFileDevice::Permission::ReadUser |
+						   QFileDevice::Permission::WriteUser;
+		}
+		if (origPermissions != permissions) {
+			if (!QFile::setPermissions(filepath, permissions)) {
+				logWarning(
+					tr("Could not fix permissions for %1").arg(filepath));
+			} else {
+				qDebug() << "Fixed" << filepath;
+			}
+		}
+	}
+
+	shared_qobject_ptr<Technic::TechnicPackProcessor> packProcessor =
+		new Technic::TechnicPackProcessor();
+	connect(packProcessor.get(), &Technic::TechnicPackProcessor::succeeded,
+			this, &Technic::SolderPackInstallTask::emitSucceeded);
+	connect(packProcessor.get(), &Technic::TechnicPackProcessor::failed, this,
+			&Technic::SolderPackInstallTask::emitFailed);
+	packProcessor->run(m_globalSettings, m_instName, m_instIcon, m_stagingPath,
+					   m_minecraftVersion, true);
+}
+
+void Technic::SolderPackInstallTask::extractAborted()
+{
+	emitFailed(tr("Instance import has been aborted."));
+	return;
+}