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

#pragma once

#include "Swiften/Application/ApplicationPathProvider.h"

#include <iostream>
#include <unistd.h>

#include "Swiften/Base/ByteArray.h"
#include "Swiften/Base/foreach.h"

namespace Swift {
	class UnixApplicationPathProvider : public ApplicationPathProvider {
		public:
			UnixApplicationPathProvider(const String& name) : ApplicationPathProvider(name) {
				resourceDirs.push_back(getExecutableDir() / "../resources"); // Development
				char* xdgDataDirs = getenv("XDG_DATA_DIRS");
				if (xdgDataDirs) {
					std::vector<String> dataDirs = String(xdgDataDirs).split(":");
					if (!dataDirs.empty()) {
						foreach(const String& dir, dataDirs) {
							resourceDirs.push_back(boost::filesystem::path(dir.getUTF8String()) / "swift");
						}
						return;
					}
				}
				resourceDirs.push_back("/usr/local/share/swift");
				resourceDirs.push_back("/usr/share/swift");
			}

			virtual boost::filesystem::path getHomeDir() const {
				return boost::filesystem::path(getenv("HOME"));
			}

			boost::filesystem::path getSettingsDir() const {
				boost::filesystem::path result(getHomeDir() / ("." + getApplicationName().getLowerCase().getUTF8String()));
				try {
					boost::filesystem::create_directory(result);
				}
				catch (const boost::filesystem::filesystem_error& e) {
					std::cerr << "ERROR: " << e.what() << std::endl;
				}
				return result;
			}

			virtual boost::filesystem::path getExecutableDir() const {
				ByteArray path;
				path.resize(4096);
				size_t size = readlink("/proc/self/exe", path.getData(), path.getSize());
				if (size > 0) {
					path.resize(size);
					return boost::filesystem::path(path.toString().getUTF8Data()).parent_path();
				}
				else {
					return boost::filesystem::path();
				}
			}

			virtual std::vector<boost::filesystem::path> getResourceDirs() const {
				return resourceDirs;
			}

		private:
			std::vector<boost::filesystem::path> resourceDirs;
	};
}