#include "paths.hpp"

#include <myx/base/config.hpp>
#include "whereami++.h"

#include <paths.h>
#include <QString>
#include <QCoreApplication>

namespace myx {

namespace filesystem {

QString Paths::executableFileName() const
{
	return( m_executableFileName );
}


void Paths::setExecutableFileName( const QString& executableFileName )
{
	m_executableFileName = executableFileName;
}


QString Paths::configFileName() const
{
	return( m_configFileName );
}


void Paths::setConfigFileName( const QString& configFileName )
{
	m_configFileName = configFileName;
}


QFileInfo Paths::executableFilePath() const
{
	return( m_executableFilePath );
}


void Paths::setExecutableFilePath( const QFileInfo& executableFilePath )
{
	m_executableFilePath = executableFilePath;
}


QFileInfo Paths::configFilePath() const
{
	return( m_configFilePath );
}


void Paths::setConfigFilePath( const QFileInfo& configFilePath )
{
	m_configFilePath = configFilePath;
}


Paths::Paths()
{
	m_prefixDirectory = "/opt/" + QCoreApplication::organizationName().toLower() +
	                    "/" + QCoreApplication::applicationName().toLower();
	m_binaryDirectory = m_prefixDirectory.absolutePath() + "/bin";
	m_configDirectory = m_prefixDirectory.absolutePath() + "/etc";
	m_cacheDirectory = m_prefixDirectory.absolutePath() + "/var";
	m_tempDirectory = QString::fromLocal8Bit( qgetenv( qPrintable( "TMPDIR" ) ) );
	m_dataDirectory = m_prefixDirectory.absolutePath() + "/share";
	m_homeDirectory = QString::fromLocal8Bit( qgetenv( qPrintable( "HOME" ) ) );
	m_executableFileName = QCoreApplication::applicationName().toLower();
	m_configFileName = m_executableFileName + ".conf";
	m_executableFilePath = m_binaryDirectory.absolutePath() + "/" + m_executableFileName;
	m_configFilePath = m_binaryDirectory.absolutePath() + "/" + m_configFileName;


	if ( m_tempDirectory.absolutePath().isEmpty() || ( m_tempDirectory.path() == "." ) )
	{
		m_tempDirectory = _PATH_TMP;
	}
}


QDir Paths::prefixDirectory() const
{
	return( m_prefixDirectory );
}


void Paths::setPrefixDirectory( const QString& prefixDirectory )
{
	m_prefixDirectory = prefixDirectory;
}


QDir Paths::binaryDirectory() const
{
	return( m_binaryDirectory );
}


void Paths::setBinaryDirectory( const QString& binaryDirectory )
{
	m_binaryDirectory = binaryDirectory;
}


QDir Paths::configDirectory() const
{
	return( m_configDirectory );
}


void Paths::setConfigDirectory( const QString& configDirectory )
{
	m_configDirectory = configDirectory;
}


QDir Paths::cacheDirectory() const
{
	return( m_cacheDirectory );
}


void Paths::setCacheDirectory( const QString& cacheDirectory )
{
	m_cacheDirectory = cacheDirectory;
}


QDir Paths::tempDirectory() const
{
	return( m_tempDirectory );
}


void Paths::setTempDirectory( const QString& tempDirectory )
{
	m_tempDirectory = tempDirectory;
}


QDir Paths::dataDirectory() const
{
	return( m_dataDirectory );
}


void Paths::setDataDirectory( const QString& dataDirectory )
{
	m_dataDirectory = dataDirectory;
}


bool Paths::updatePaths()
{
	whereami::whereami_path_t executablePath = whereami::getExecutablePath();

	m_executableFileName = QString::fromStdString( executablePath.basename() );
	m_binaryDirectory = QString::fromStdString( executablePath.dirname() );
	m_executableFilePath = QFile( m_binaryDirectory.absolutePath() + "/" + m_executableFileName );

	if ( m_binaryDirectory.absolutePath().endsWith( "/bin" ) )
	{
		m_prefixDirectory = m_binaryDirectory.absolutePath().remove( QRegExp( "/bin$" ) );
		m_configDirectory = m_prefixDirectory.absolutePath() + "/etc";
		m_cacheDirectory = m_prefixDirectory.absolutePath() + "/var";
		m_dataDirectory = m_prefixDirectory.absolutePath() + "/share";
		m_configFilePath = QFile( m_configDirectory.absolutePath() + "/" +
		                          QCoreApplication::applicationName() + ".conf" );
	}

	if ( m_prefixDirectory.absolutePath().startsWith( "/opt" ) ||
	     m_prefixDirectory.absolutePath().startsWith( "/usr" ) )
	{
		QString dataDirectory = QString::fromLocal8Bit( qgetenv( qPrintable( "XDG_DATA_HOME" ) ) );
		if ( dataDirectory.isEmpty() )
		{
			dataDirectory = m_homeDirectory.absolutePath() + ".local/share";
		}
		m_dataDirectory = dataDirectory + "/" +
		                  QCoreApplication::organizationName().toLower() + "/" +
		                  QCoreApplication::applicationName().toLower();

		QString configDirectory = QString::fromLocal8Bit( qgetenv( qPrintable( "XDG_CONFIG_HOME" ) ) );
		if ( configDirectory.isEmpty() )
		{
			configDirectory = m_homeDirectory.absolutePath() + ".config";
		}
		m_configDirectory = configDirectory + "/" +
		                    QCoreApplication::organizationName().toLower() + "/" +
		                    QCoreApplication::applicationName().toLower();

		QString cacheDirectory = QString::fromLocal8Bit( qgetenv( qPrintable( "XDG_CACHE_HOME" ) ) );
		if ( cacheDirectory.isEmpty() )
		{
			cacheDirectory = m_homeDirectory.absolutePath() + ".cache";
		}
		m_cacheDirectory = cacheDirectory + "/" +
		                   QCoreApplication::organizationName().toLower() + "/" +
		                   QCoreApplication::applicationName().toLower();
	}

	return( true );
} // Paths::updatePaths


bool Paths::makePaths()
{
	bool status = true;

	if ( !m_dataDirectory.mkpath( m_dataDirectory.absolutePath() ) ) { status = false; }
	if ( !m_configDirectory.mkpath( m_configDirectory.absolutePath() ) ) { status = false; }
	if ( !m_cacheDirectory.mkpath( m_cacheDirectory.absolutePath() ) ) { status = false; }
	return( status );
}


QString Paths::findConfigFile( const QString& defaultConfigFile )
{
	if ( QFileInfo( defaultConfigFile ).isReadable() )
	{
		m_configFilePath = defaultConfigFile;
		return( defaultConfigFile );
	}

	auto fileName = QString::fromLocal8Bit( qgetenv( QCoreApplication::applicationName()
	                                                 .toUpper().toUtf8() + "_CONFIG" ) );
	if ( QFileInfo( fileName ).isReadable() )
	{
		m_configFilePath = fileName;
		return( fileName );
	}

	if ( QFileInfo( m_configFilePath ).isReadable() )
	{
		return( m_configFilePath.absoluteFilePath() );
	}

	return( QString() );
} // Paths::findConfigFile

} // namespace filesystem

} // namespace myx