/* Copyright 2013 MultiMC Contributors
 *
 * Authors: Orochimarufan <orochimarufan.x3@gmail.com>
 *
 * 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.
 */
#ifndef MINECRAFTPROCESS_H
#define MINECRAFTPROCESS_H

#include <QProcess>

#include "instance.h"

#include "libmmc_config.h"

/**
 * @brief the MessageLevel Enum
 * defines what level a message is
 */
namespace MessageLevel {
enum LIBMULTIMC_EXPORT Enum {
	MultiMC,	/**< MultiMC Messages */
	Debug,		/**< Debug Messages */
	Info,		/**< Info Messages */
	Message,	/**< Standard Messages */
	Warning,	/**< Warnings */
	Error,		/**< Errors */
	Fatal		/**< Fatal Errors */
};
}

/**
 * @file data/minecraftprocess.h
 * @brief The MinecraftProcess class
 */
class LIBMULTIMC_EXPORT MinecraftProcess : public QProcess
{
	Q_OBJECT
public:
	/**
	 * @brief MinecraftProcess constructor
	 * @param inst the Instance pointer to launch
	 * @param user the minecraft username
	 * @param session the minecraft session id
	 * @param console the instance console window
	 */
	MinecraftProcess(InstancePtr inst, QString user, QString session);

	/**
	 * @brief launch minecraft
	 */
	void launch();

	/**
	 * @brief extract the instance icon
	 * @param inst the instance
	 * @param destination the destination path
	 */
	static inline void extractIcon(InstancePtr inst, QString destination);

	/**
	 * @brief extract the MultiMC launcher.jar
	 * @param destination the destination path
	 */
	static inline void extractLauncher(QString destination);

	/**
	 * @brief prepare the launch by extracting icon and launcher
	 * @param inst the instance
	 */
	static void prepare(InstancePtr inst);

	/**
	 * @brief split a string into argv items like a shell would do
	 * @param args the argument string
	 * @return a QStringList containing all arguments
	 */
	static QStringList splitArgs(QString args);

signals:
	/**
	 * @brief emitted when mc has finished and the PostLaunchCommand was run
	 */
	void ended();

	/**
	 * @brief emitted when we want to log something
	 * @param text the text to log
	 * @param level the level to log at
	 */
	void log(QString text, MessageLevel::Enum level=MessageLevel::MultiMC);

protected:
	InstancePtr m_instance;
	QString m_user;
	QString m_session;
	QString m_err_leftover;
	QString m_out_leftover;
	QProcess m_prepostlaunchprocess;
	QStringList m_arguments;

	void genArgs();

protected slots:
	void finish(int, QProcess::ExitStatus status);
	void on_stdErr();
	void on_stdOut();

};

#endif // MINECRAFTPROCESS_H