/***************************************************************************

  gbx_c_system.c

  (c) 2000-2012 Benoît Minisini <gambas@users.sourceforge.net>

  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, 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, write to the Free Software
  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  MA 02110-1301, USA.

***************************************************************************/

#define __GBX_C_SYSTEM_C

#include "gambas.h"
#include "gbx_info.h"

#ifndef GBX_INFO

#include "config.h"

#include <pwd.h>
#include <sys/types.h>
#include <unistd.h>

#include "gb_common.h"
#include "gb_error.h"
#include "gbx_api.h"
#include "gbx_class.h"
#include "gbx_project.h"
#include "gbx_local.h"
#include "gbx_event.h"
#include "gbx_string.h"
#include "gbx_exec.h"
#include "gbx_extern.h"
#include "gbx_object.h"

#include "gbx_c_process.h"
#include "gbx_c_system.h"

BEGIN_PROPERTY(User_Home)

	GB_ReturnString(PROJECT_get_home());

END_PROPERTY


BEGIN_PROPERTY(User_Name)

	struct passwd *info = getpwuid(getuid());

	if (info)
		GB_ReturnNewZeroString(info->pw_name);
	else
		GB_Error((char *)E_MEMORY);

END_PROPERTY


BEGIN_PROPERTY(User_Id)

	GB_ReturnInteger(getuid());

END_PROPERTY


BEGIN_PROPERTY(User_Group)

	GB_ReturnInteger(getgid());

END_PROPERTY


BEGIN_PROPERTY(System_Language)

	if (READ_PROPERTY)
		GB_ReturnNewZeroString(LOCAL_get_lang());
	else
		LOCAL_set_lang(GB_ToZeroString(PROP(GB_STRING)));

END_PROPERTY


BEGIN_PROPERTY(System_FirstDayOfWeek)

	if (READ_PROPERTY)
		GB_ReturnInteger(LOCAL_get_first_day_of_week());
	else
		LOCAL_set_first_day_of_week(VPROP(GB_INTEGER));

END_PROPERTY


BEGIN_PROPERTY(System_Charset)

	if (LOCAL_is_UTF8)
		GB_ReturnConstZeroString("UTF-8");
	else
		GB_ReturnString(LOCAL_encoding);

END_PROPERTY


BEGIN_PROPERTY(System_RightToLeft)

	GB_ReturnBoolean(LOCAL_local.rtl);

END_PROPERTY


BEGIN_PROPERTY(System_Path)

	GB_ReturnString(PROJECT_exec_path);

END_PROPERTY


BEGIN_PROPERTY(System_Host)

	char buffer[256];

	gethostname(buffer, 255);
	GB_ReturnNewZeroString(buffer);

END_PROPERTY


BEGIN_PROPERTY(System_Domain)

	char buffer[256];

	if (getdomainname(buffer, 255))
		GB_Error("Unable to retrieve domain name: &1", strerror(errno));
	else
		GB_ReturnNewZeroString(buffer);

END_PROPERTY


BEGIN_PROPERTY(System_ByteOrder)

	GB_ReturnInteger(EXEC_big_endian);

END_PROPERTY


BEGIN_PROPERTY(System_Backtrace)

	STACK_BACKTRACE *bt = STACK_get_backtrace();

	GB_ReturnObject(DEBUG_get_string_array_from_backtrace(bt));
	STACK_free_backtrace(&bt);
	
END_PROPERTY


BEGIN_PROPERTY(System_Error)

	GB_ReturnInteger(errno);

END_PROPERTY


BEGIN_METHOD(System_GetExternSymbol, GB_STRING library; GB_STRING name)

	char *library = GB_ToZeroString(ARG(library));
	char *name = GB_ToZeroString(ARG(name));
	void *ptr = NULL;
	
	if (*library && *name)
		ptr = EXTERN_get_symbol(library, name);
	
	GB_ReturnPointer(ptr);

END_METHOD


BEGIN_PROPERTY(System_Shell)

	if (READ_PROPERTY)
	{
		if (!CPROCESS_shell)
			GB_ReturnConstZeroString("/bin/sh");
		else
			GB_ReturnString(CPROCESS_shell);
	}
	else
		GB_StoreString(PROP(GB_STRING), &CPROCESS_shell);

END_PROPERTY

BEGIN_PROPERTY(System_Profile)

	if (READ_PROPERTY)
		GB_ReturnBoolean(EXEC_profile_instr);
	else
		EXEC_profile_instr = EXEC_profile && VPROP(GB_BOOLEAN);

END_PROPERTY

#endif

GB_DESC NATIVE_User[] =
{
	GB_DECLARE("User", 0), GB_VIRTUAL_CLASS(),

	GB_STATIC_PROPERTY_READ("Name", "s", User_Name),
	GB_STATIC_PROPERTY_READ("Id", "i", User_Id),
	GB_STATIC_PROPERTY_READ("Group", "i", User_Group),
	GB_STATIC_PROPERTY_READ("Home", "s", User_Home),

	GB_END_DECLARE
};

GB_DESC NATIVE_System[] =
{
	GB_DECLARE("System", 0), GB_VIRTUAL_CLASS(),

	GB_STATIC_PROPERTY_READ("Path", "s", System_Path),
	GB_CONSTANT("Version", "s", GAMBAS_VERSION_STRING),
	GB_CONSTANT("FullVersion", "s", VERSION),
	GB_STATIC_PROPERTY_READ("Backtrace", "String[]", System_Backtrace),

	GB_STATIC_PROPERTY("Language", "s", System_Language),
	GB_STATIC_PROPERTY("FirstDayOfWeek", "i", System_FirstDayOfWeek),
	GB_STATIC_PROPERTY("Shell", "s", System_Shell),
	GB_STATIC_PROPERTY("Profile", "b", System_Profile),
	
	GB_STATIC_PROPERTY_READ("RightToLeft", "b", System_RightToLeft),
	GB_STATIC_PROPERTY_READ("Charset", "s", System_Charset),
	GB_STATIC_PROPERTY_READ("Host", "s", System_Host),
	GB_STATIC_PROPERTY_READ("Domain", "s", System_Domain),
	GB_STATIC_PROPERTY_READ("ByteOrder", "i", System_ByteOrder),
	GB_STATIC_PROPERTY_READ("Error", "i", System_Error),
	
	GB_CONSTANT("Family", "s", SYSTEM),
	GB_CONSTANT("Architecture", "s", ARCHITECTURE),
	
	GB_STATIC_METHOD("GetExternSymbol", "p", System_GetExternSymbol, "(Library)s(Symbol)s"),
	
	GB_STATIC_PROPERTY_SELF("User", "User"),

	GB_END_DECLARE
};