// 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.
 */
#pragma once

#include "BaseVersion.h"
#include "InstanceTask.h"
#include "minecraft/MinecraftInstance.h"

#include <memory>

class InstanceCreationTask : public InstanceTask
{
	Q_OBJECT
  public:
	InstanceCreationTask()			= default;
	virtual ~InstanceCreationTask() = default;

	bool abort() override;

  protected:
	void executeTask() final override;

	/**
	 * Tries to update an already existing instance.
	 *
	 * This can be implemented by subclasses to provide a way of updating an already existing
	 * instance, according to that implementation's concept of 'identity' (i.e. instances that
	 * are updates / downgrades of one another).
	 *
	 * If this returns true, createInstance() will not run, so you should do all update steps in here.
	 * Otherwise, createInstance() is run as normal.
	 */
	virtual bool updateInstance()
	{
		return false;
	};

	/**
	 * Creates a new instance.
	 *
	 * Returns the instance if it was created or nullptr otherwise.
	 */
	virtual std::unique_ptr<MinecraftInstance> createInstance()
	{
		return nullptr;
	};

	QString getError() const
	{
		return m_error_message;
	}

  protected:
	void setError(const QString& message)
	{
		m_error_message = message;
	};

  protected:
	bool m_abort = false;

	QStringList m_files_to_remove;

  private:
	QString m_error_message;
	std::unique_ptr<MinecraftInstance> m_createdInstance;
	Task::Ptr m_gameFilesTask;
};