/*
    Copyright (C) 2007 Tim Mayberry

    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, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/
#include <cstdlib>

#include "pbd/error.h"
#include "pbd/compose.h"
#include "pbd/filesystem_paths.h"

#include <glibmm/miscutils.h>
#include <glibmm/fileutils.h>

#include "ardour/directory_names.h"
#include "ardour/filesystem_paths.h"

#include "i18n.h"

#define WITH_STATIC_PATHS 1

using namespace PBD;

namespace ARDOUR {

using std::string;

sys::path
user_config_directory ()
{
	sys::path p;

#ifdef __APPLE__
	p = Glib::get_home_dir();
	p /= "Library/Preferences";

#else
	const char* c = 0;

	/* adopt freedesktop standards, and put .ardour3 into $XDG_CONFIG_HOME or ~/.config
	 */

	if ((c = getenv ("XDG_CONFIG_HOME")) != 0) {
		p = c;
	} else {
		const string home_dir = Glib::get_home_dir();

		if (home_dir.empty ()) {
			const string error_msg = "Unable to determine home directory";

			// log the error
			error << error_msg << endmsg;

			throw sys::filesystem_error(error_msg);
		}

		p = home_dir;
		p /= ".config";
	}
#endif

	p /= user_config_dir_name;

	std::string ps (p.to_string());

	if (!Glib::file_test (ps, Glib::FILE_TEST_EXISTS)) {
		if (g_mkdir_with_parents (ps.c_str(), 0755)) {
			error << string_compose (_("Cannot create Configuration directory %1 - cannot run"),
						   ps) << endmsg;
			exit (1);
		}
	} else if (!Glib::file_test (ps, Glib::FILE_TEST_IS_DIR)) {
		error << string_compose (_("Configuration directory %1 already exists and is not a directory/folder - cannot run"),
					   ps) << endmsg;
		exit (1);
	}

	return p;
}

sys::path
ardour_module_directory ()
{
	sys::path module_directory(MODULE_DIR);
	module_directory /= "ardour3";
	return module_directory;
}

SearchPath
ardour_search_path ()
{
	SearchPath spath_env(Glib::getenv("ARDOUR_PATH"));
	return spath_env;
}

SearchPath
system_config_search_path ()
{
#ifdef WITH_STATIC_PATHS
	SearchPath config_path(string(CONFIG_DIR));
#else
	SearchPath config_path(system_config_directories());
#endif

	config_path.add_subdirectory_to_paths("ardour3");

	return config_path;
}

SearchPath
system_data_search_path ()
{
#ifdef WITH_STATIC_PATHS
	SearchPath data_path(string(DATA_DIR));
#else
	SearchPath data_path(system_data_directories());
#endif

	data_path.add_subdirectory_to_paths("ardour3");

	return data_path;
}

} // namespace ARDOUR