1 files changed, 80 insertions, 0 deletions
diff --git a/archived/projt-launcher/launcher/BaseInstaller.cpp b/archived/projt-launcher/launcher/BaseInstaller.cpp
new file mode 100644
index 0000000000..8f958b0f0d
--- /dev/null
+++ b/archived/projt-launcher/launcher/BaseInstaller.cpp
@@ -0,0 +1,80 @@
+// SPDX-License-Identifier: GPL-3.0-only AND Apache-2.0
+// 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.
+ * === Upstream License Block (Do Not Modify) ==============================
+ * 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 <QFile>
+
+#include "BaseInstaller.h"
+#include "FileSystem.h"
+#include "minecraft/MinecraftInstance.h"
+
+BaseInstaller::BaseInstaller()
+{}
+
+bool BaseInstaller::isApplied(MinecraftInstance* on)
+{
+	return QFile::exists(filename(on->instanceRoot()));
+}
+
+bool BaseInstaller::add(MinecraftInstance* to)
+{
+	if (!patchesDir(to->instanceRoot()).exists())
+	{
+		QDir(to->instanceRoot()).mkdir("patches");
+	}
+
+	if (isApplied(to))
+	{
+		if (!remove(to))
+		{
+			return false;
+		}
+	}
+
+	return true;
+}
+
+bool BaseInstaller::remove(MinecraftInstance* from)
+{
+	return FS::deletePath(filename(from->instanceRoot()));
+}
+
+QString BaseInstaller::filename(const QString& root) const
+{
+	return patchesDir(root).absoluteFilePath(id() + ".json");
+}
+QDir BaseInstaller::patchesDir(const QString& root) const
+{
+	return QDir(root + "/patches/");
+}