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/*
 * Copyright (c) 2010 Remko Tronçon
 * Licensed under the GNU General Public License v3.
 * See Documentation/Licenses/GPLv3.txt for more information.
 */

#include "SwifTools/Application/UnixApplicationPathProvider.h"

#include <unistd.h>
#include <boost/algorithm/string.hpp>
#include <Swiften/Base/String.h>

namespace Swift {

UnixApplicationPathProvider::UnixApplicationPathProvider(const std::string& name) : ApplicationPathProvider(name) {
	resourceDirs.push_back(getExecutableDir() / "../resources"); // Development
	resourceDirs.push_back(getExecutableDir() / ".." / "share" / boost::to_lower_copy(getApplicationName())); // Local install
	char* xdgDataDirs = getenv("XDG_DATA_DIRS");
	if (xdgDataDirs) {
		std::vector<std::string> dataDirs = String::split(xdgDataDirs, ':');
		if (!dataDirs.empty()) {
			foreach(const std::string& dir, dataDirs) {
				resourceDirs.push_back(boost::filesystem::path(dir) / "swift");
			}
			return;
		}
	}
	resourceDirs.push_back("/usr/local/share/" + boost::to_lower_copy(getApplicationName()));
	resourceDirs.push_back("/usr/share/" + boost::to_lower_copy(getApplicationName()));
}

boost::filesystem::path UnixApplicationPathProvider::getHomeDir() const {
	char* home = getenv("HOME");
	return home ? boost::filesystem::path(home) : boost::filesystem::path();
}

boost::filesystem::path UnixApplicationPathProvider::getDataDir() const {
	char* xdgDataHome = getenv("XDG_DATA_HOME");
	std::string dataDir;
	if (xdgDataHome) {
		dataDir = std::string(xdgDataHome);
	}

	boost::filesystem::path dataPath = (dataDir.empty() ? 
			getHomeDir() / ".local" / "share" 
			: boost::filesystem::path(dataDir)) / boost::to_lower_copy(getApplicationName());

	try {
		boost::filesystem::create_directories(dataPath);
	}
	catch (const boost::filesystem::filesystem_error& e) {
		std::cerr << "ERROR: " << e.what() << std::endl;
	}
	return dataPath;
}

}