#pragma once
#ifndef MESSMER_CRYFSUNMOUNT_PROGRAMOPTIONS_PARSER_H
#define MESSMER_CRYFSUNMOUNT_PROGRAMOPTIONS_PARSER_H

#include "ProgramOptions.h"
#include <boost/program_options.hpp>
#include <cryfs/ErrorCodes.h>

namespace cryfs_unmount {
	namespace program_options {
		class Parser final {
		public:
			Parser(int argc, const char *argv[]);

			ProgramOptions parse() const;

		private:
			static std::vector<std::string> _argsToVector(int argc, const char *argv[]);
			static std::vector<const char*> _to_const_char_vector(const std::vector<std::string> &options);
			static void _addAllowedOptions(boost::program_options::options_description *desc);
			static void _addPositionalOptionForBaseDir(boost::program_options::options_description *desc,
				boost::program_options::positional_options_description *positional);
			static void _showHelp();
			[[noreturn]] static void _showHelpAndExit(const std::string& message, cryfs::ErrorCode errorCode);
			[[noreturn]] static void _showCiphersAndExit(const std::vector<std::string> &supportedCiphers);
			[[noreturn]] static void _showVersionAndExit();
			static boost::program_options::variables_map _parseOptionsOrShowHelp(const std::vector<std::string> &options);
			static boost::program_options::variables_map _parseOptions(const std::vector<std::string> &options);

			std::vector<std::string> _options;

			DISALLOW_COPY_AND_ASSIGN(Parser);
		};
	}
}

#endif