/* Copyright (C) 2012 Mike Fleetwood
 *
 *  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 2 of the License, or
 *  (at your option) any later version.
 *
 *  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 <http://www.gnu.org/licenses/>.
 */

#include "FileSystem.h"
#include "LVM2_PV_Info.h"
#include "lvm2_pv.h"
#include "Partition.h"

#include <glibmm/shell.h>


namespace GParted
{

const Glib::ustring & lvm2_pv::get_custom_text( CUSTOM_TEXT ttype, int index ) const
{
	/*TO TRANSLATORS: these labels will be used in the partition menu */
	static const Glib::ustring activate_text = _( "Ac_tivate" ) ;
	static const Glib::ustring deactivate_text = _( "Deac_tivate" ) ;

	static const Glib::ustring resize_warning =
		_( "The LVM2 Physical Volume can not currently be resized because it is a member of an exported "
		   "Volume Group." ) ;
	static const Glib::ustring empty_text;

	switch ( ttype )
	{
		case CTEXT_ACTIVATE_FILESYSTEM:
			return index == 0 ? activate_text : empty_text;
		case CTEXT_DEACTIVATE_FILESYSTEM:
			return index == 0 ? deactivate_text : empty_text;
		case CTEXT_RESIZE_DISALLOWED_WARNING:
			return index == 0 ? resize_warning : empty_text;
		default:
			return empty_text;
	}
}

FS lvm2_pv::get_filesystem_support()
{
	FS fs( FS_LVM2_PV );

	if ( LVM2_PV_Info::is_lvm2_pv_supported() )
	{
		fs .busy   = FS::EXTERNAL ;
		fs .read   = FS::EXTERNAL ;
		fs .create = FS::EXTERNAL ;
		fs .grow   = FS::EXTERNAL ;
		fs .shrink = FS::EXTERNAL ;
		fs .move   = FS::GPARTED ;
		fs .check  = FS::EXTERNAL ;
		fs .remove = FS::EXTERNAL ;
		fs .online_read = FS::EXTERNAL ;
#ifdef ENABLE_ONLINE_RESIZE
		if ( Utils::kernel_version_at_least( 3, 6, 0 ) )
		{
			fs .online_grow = fs .grow ;
			fs .online_shrink = fs.shrink ;
		}
#endif
	}

	return fs ;
}

bool lvm2_pv::is_busy( const Glib::ustring & path )
{
	return LVM2_PV_Info::has_active_lvs( path );
}


void lvm2_pv::set_used_sectors( Partition & partition )
{
	Byte_Value size_bytes = LVM2_PV_Info::get_size_bytes(partition.get_path());
	Byte_Value free_bytes = LVM2_PV_Info::get_free_bytes(partition.get_path());
	if (size_bytes > -1 && free_bytes > -1)
	{
		Sector fs_size = size_bytes / partition.sector_size;
		Sector fs_free = free_bytes / partition.sector_size;
		partition.set_sector_usage(fs_size, fs_free);
	}

	std::vector<Glib::ustring> error_messages = LVM2_PV_Info::get_error_messages( partition.get_path() );
	partition.append_messages( error_messages );
}

bool lvm2_pv::create( const Partition & new_partition, OperationDetail & operationdetail )
{
	return ! execute_command( "lvm pvcreate -M 2 " + Glib::shell_quote( new_partition.get_path() ),
	                          operationdetail, EXEC_CHECK_STATUS );
}

bool lvm2_pv::resize( const Partition & partition_new, OperationDetail & operationdetail, bool fill_partition )
{
	Glib::ustring size = "" ;
	if ( ! fill_partition )
		size = " --yes --setphysicalvolumesize " +
		       Utils::num_to_str(partition_new.get_byte_length() / KIBIBYTE) + "K ";
	return ! execute_command( "lvm pvresize -v " + size + Glib::shell_quote( partition_new.get_path() ),
	                          operationdetail, EXEC_CHECK_STATUS );
}

bool lvm2_pv::check_repair( const Partition & partition, OperationDetail & operationdetail )
{
	return ! execute_command( "lvm pvck -v " + Glib::shell_quote( partition.get_path() ),
	                          operationdetail, EXEC_CHECK_STATUS );
}

bool lvm2_pv::remove( const Partition & partition, OperationDetail & operationdetail )
{
	const Glib::ustring& vgname = LVM2_PV_Info::get_vg_name(partition.get_path());
	Glib::ustring cmd ;
	if ( vgname .empty() )
		cmd = "lvm pvremove " + Glib::shell_quote( partition.get_path() );
	else
		//Must force the removal of a PV which is a member of a VG
		cmd = "lvm pvremove --force --force --yes " + Glib::shell_quote( partition.get_path() );
	return ! execute_command( cmd, operationdetail, EXEC_CHECK_STATUS );
}

} //GParted