/* SPDX-FileCopyrightText: 2026 Project Tick
 * SPDX-FileContributor: Project Tick
 * SPDX-License-Identifier: GPL-3.0-or-later WITH LicenseRef-MeshMC-MMCO-Module-Exception-1.0
 *
 *   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, with the additional permission
 *   described in the MeshMC MMCO Module Exception 1.0.
 *
 *   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/>.
 *
 *   You should have received a copy of the MeshMC MMCO Module Exception 1.0
 *   along with this program.  If not, see <https://projecttick.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 "ModMinecraftJar.h"
#include "launch/LaunchTask.h"
#include "MMCZip.h"
#include "minecraft/OpSys.h"
#include "FileSystem.h"
#include "minecraft/MinecraftInstance.h"
#include "minecraft/PackProfile.h"

void ModMinecraftJar::executeTask()
{
	auto m_inst =
		std::dynamic_pointer_cast<MinecraftInstance>(m_parent->instance());

	if (!m_inst->getJarMods().size()) {
		emitSucceeded();
		return;
	}
	// nuke obsolete stripped jar(s) if needed
	if (!FS::ensureFolderPathExists(m_inst->binRoot())) {
		emitFailed(tr("Couldn't create the bin folder for Minecraft.jar"));
	}

	auto finalJarPath =
		QDir(m_inst->binRoot()).absoluteFilePath("minecraft.jar");
	if (!removeJar()) {
		emitFailed(tr("Couldn't remove stale jar file: %1").arg(finalJarPath));
	}

	// create temporary modded jar, if needed
	auto components = m_inst->getPackProfile();
	auto profile = components->getProfile();
	auto jarMods = m_inst->getJarMods();
	if (jarMods.size()) {
		auto mainJar = profile->getMainJar();
		QStringList jars, temp1, temp2, temp3, temp4;
		mainJar->getApplicableFiles(currentSystem, jars, temp1, temp2, temp3,
									m_inst->getLocalLibraryPath());
		auto sourceJarPath = jars[0];
		if (!MMCZip::createModdedJar(sourceJarPath, finalJarPath, jarMods)) {
			emitFailed(tr("Failed to create the custom Minecraft jar file."));
			return;
		}
	}
	emitSucceeded();
}

void ModMinecraftJar::finalize()
{
	removeJar();
}

bool ModMinecraftJar::removeJar()
{
	auto m_inst =
		std::dynamic_pointer_cast<MinecraftInstance>(m_parent->instance());
	auto finalJarPath =
		QDir(m_inst->binRoot()).absoluteFilePath("minecraft.jar");
	QFile finalJar(finalJarPath);
	if (finalJar.exists()) {
		if (!finalJar.remove()) {
			return false;
		}
	}
	return true;
}
